FN Thomson Reuters Web of Science™
VR 1.0
PT S
AU Wetstein, MJ
Adams, B
Chollet, M
Webster, P
Insepov, Z
Ivanov, V
Jokela, S
Veryovkin, I
Zinovev, A
Elam, J
Mane, A
Peng, Q
Frisch, H
AF Wetstein, Matthew J.
Adams, Bernhard
Chollet, Matthieu
Webster, Preston
Insepov, Zeke
Ivanov, Valentin
Jokela, Slade
Veryovkin, Igor
Zinovev, Alex
Elam, Jeffrey
Mane, Anil
Peng, Qing
Frisch, Henry
CA LAPPD Collaboration
BE Liu, T
TI Systems-Level Characterization of Microchannel Plate Detector
Assemblies, Using a Pulsed sub-Picosecond Laser
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE microchannel; MCP; characterization; photodetectors; time-of-flight;
time-resolving
ID ATOMIC LAYER DEPOSITION; MCP-PMT
AB Microchannel plate photomultiplier tubes (MCP-PMTs) are compact imaging detectors, capable of micron-level spatial imaging and timing measurements with resolutions well below 10 picoseconds. The Large Area Picosecond Photodetector Collaboration (LAPPD) is developing techniques for fabricating 8" x 8", thin, planar, glass-body MCP-PMTs at costs comparable to traditional PMTs. Collaboration between the High Energy Physics Division and the Advanced Photon Source (APS) at Argonne National Laboratory (ANL) has produced an advanced channel-plate characterization facility for testing the time response of MCPs using a pulsed laser capable of sub-picosecond pulses. The MCPs are tested in stacks of one or two plates with a simple photocathode and coupled to a microstripline anode board. LAPPD-made MCPs have already demonstrated gains larger than 105 and promising time resolving capabilities. These measurements will guide the systems-level optimization of LAPPD detectors and the development of signal processing algorithms. Predictions made by the LAPPD simulations group based on electron emmission properties of the MCP pore surface are compared with these tests to help further our understanding of MCP performance. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Wetstein, Matthew J.; Adams, Bernhard; Chollet, Matthieu; Insepov, Zeke; Jokela, Slade; Veryovkin, Igor; Zinovev, Alex; Elam, Jeffrey; Mane, Anil; Peng, Qing; Frisch, Henry] Argonne Natl Lab, Argonne, IL 60439 USA.
[Wetstein, Matthew J.; Frisch, Henry] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Webster, Preston] Iowa State Univ, Iowa City, IA USA.
RP Wetstein, MJ (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
EM mwetstein@anl.gov
RI peng, qing/I-2970-2013; Insepov, Zinetula/L-2095-2013
OI Insepov, Zinetula/0000-0002-8079-6293
FU U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
Operator of Argonne National Laboratory ( Argonne). Argonne, a U.S.
Department of Energy Office of Science laboratory, is operated under
Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself,
and others acting on its behalf, a paid- up nonexclusive, irrevocable
worldwide license in said article to reproduce, prepare derivative
works, distribute copies to the public, and perform publicly and display
publicly, by or on behalf of the Government.
NR 11
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 748
EP 756
DI 10.1016/j.phpro.2012.03.717
PG 9
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100097
ER
PT S
AU Lee, SW
Attenkofer, K
Walters, D
Demarteau, M
Yusof, Z
AF Lee, Seon Woo
Attenkofer, Klaus
Walters, Dean
Demarteau, Marcel
Yusof, Zikri
BE Liu, T
TI Optimization of Transmission Mode Metallic (Aluminum) Photocathodes
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Transmission mode metallic photocathode; Quantum efficiency;
Photodetector
AB Transmission mode metallic photocathodes are studied, especially for aluminum ones, to test complete 8"x8" large-area planar photodetectors in ambient condition. We have derived a quantitative model for transmission mode metallic photocathodes which permits optimization of the thickness of these cathodes (approximately 15 similar to 20 nm) and estimation of quantum efficiency based on the theory and the known parameters from the literatures. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Lee, Seon Woo; Attenkofer, Klaus; Walters, Dean; Demarteau, Marcel; Yusof, Zikri] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Lee, SW (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM seon.w.lee@gmail.com
NR 12
TC 1
Z9 1
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 757
EP 764
DI 10.1016/j.phpro.2012.03.726
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100098
ER
PT S
AU Lee, SW
Attenkofer, K
Demarteau, M
Smedley, J
Ben-Zvi, I
Rao, T
Ruiz-Oses, M
Liang, X
Muller, EM
Padmore, H
Vecchione, T
AF Lee, S. W.
Attenkofer, K.
Demarteau, M.
Smedley, J.
Ben-Zvi, I.
Rao, T.
Ruiz-Oses, M.
Liang, X.
Muller, E. M.
Padmore, H.
Vecchione, T.
BE Liu, T
TI Revealing the Correlations between Growth Recipe and Microscopic
Structure of Bi-alkali/Multi-alkali Photocathodes
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Multi-alkali photocathode; thin film growth; X-ray diffractometry; X-ray
reflectometry
ID RAY REFLECTIVITY DATA; TUNGSTEN
AB For the development of high quantum efficiency photocathodes, the bi-alkali (K-Cs-Sb) photocathode growth process was studied through in-situ X-ray scattering measurements, including X-ray diffractometry (XRD) and X-ray reflectometry (XRR). Characterization during real-time growth revealed correlations between growth parameters and microscopic structural change of the photocathode. This paper presents preliminary results of an ongoing experiment to understand the growth mechanism. X-ray diffractometry enabled the observation of selective growth of specific crystalline orientation during the deposition and evaporation of an Sb layer. A phase transition of the Sb layer was also measured. X-ray reflectometry revealed surface roughness changes during the growth process and permitted layer thickness measurements while the K layer was evaporated on an ex-situ grown Sb layer, in addition to in-situ Sb layer growth. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Lee, S. W.; Attenkofer, K.; Demarteau, M.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Smedley, J.; Ben-Zvi, I.; Rao, T.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Ruiz-Oses, M.; Liang, X.; Muller, E. M.] SUNY Stony Brook, Stony Brook, NY USA.
[Padmore, H.; Vecchione, T.] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
RP Lee, SW (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM seon.w.lee@gmail.com
FU UChicago Argonne; LLC; Operator of Argonne National Laboratory
("Argonne"); U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]
FX The submitted manuscript has been created by UChicago Argonne, LLC,
Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S.
Department of Energy Office of Science laboratory, is operated under
Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself,
and others acting on its behalf, a paid- up nonexclusive, irrevocable
worldwide license in said article to reproduce, prepare derivative
works, distribute copies to the public, and perform publicly and display
publicly, by or on behalf of the Government.
NR 9
TC 0
Z9 0
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 765
EP 772
DI 10.1016/j.phpro.2012.03.724
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100099
ER
PT S
AU El Alaoui, A
Baltzell, N
Hafidi, K
AF El Alaoui, Ahmed
Baltzell, Nathan
Hafidi, Kawtar
BE Liu, T
TI A RICH detector for CLAS12 Spectrometer
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE CEBAF; CLAS12; RICH; DRT
ID JEFFERSON-LAB; KAON PHYSICS; HALL-A
AB The upgrade of the Jefferson Lab accelerator to 12 GeV electron beam energy, combined with that of the CEBAF Large Acceptance Spectrometer (CLAS12) located in Hall B, will provide the unique combination of wide kinematical coverage, high beam intensity (luminosity), high energy, high polarization, and advanced detection capabilities required to study Quantum Chromodynamics (QCD) in greater details. A Ring Imaging Cherenkov (RICH) will significantly enhance CLAS12 particle identification capabilities by providing clean separation between pions, kaons and protons over momenta from 2 to 8 GeV/c. A detailed simulation of a preliminary design of the RICH detector for CLAS12 using GEANT-4 Monte-Carlo will be presented. A reconstruction algorithm based on a likelihood approach will be discussed. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [El Alaoui, Ahmed; Baltzell, Nathan; Hafidi, Kawtar] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
RP El Alaoui, A (reprint author), Argonne Natl Lab, Div Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM alaoui@anl.gov
NR 7
TC 3
Z9 3
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 773
EP 780
DI 10.1016/j.phpro.2012.03.723
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100100
ER
PT S
AU Ramberg, E
Ronzhin, A
Zatserklyaniy, A
AF Ramberg, Erik
Ronzhin, Anatoly
Zatserklyaniy, Andriy
BE Liu, T
TI Waveform analysis of SiPM signals with DRS4 board
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE DRS4; SiPM; waveform analysis
AB We are using a DRS4 digital oscilloscope board for time-of-flight (TOF) applications in Fermilab. We developed a model to perform waveform analysis of the DRS4 data taken with silicon photomultipliers. The applications range from Cherenkov TOF systems to TOF positron emission tomography. The unified approach allows achieving high time resolutions for signals with width from a few to hundreds of nanoseconds. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Zatserklyaniy, Andriy] Univ Puerto Rico, Mayaguez, PR 00680 USA.
[Ramberg, Erik; Ronzhin, Anatoly] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Zatserklyaniy, A (reprint author), Univ Puerto Rico, Mayaguez, PR 00680 USA.
EM zatserkl@fnal.gov
NR 4
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 800
EP 802
DI 10.1016/j.phpro.2012.03.725
PG 3
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100104
ER
PT S
AU Siegmund, OHW
McPhate, JB
Tremsin, AS
Jelinsky, SR
Frisch, HJ
Elam, J
Mane, A
Wagner, R
Minot, MJ
Renaud, J
Deterando, M
AF Siegmund, O. H. W.
McPhate, J. B.
Tremsin, A. S.
Jelinsky, S. R.
Frisch, H. J.
Elam, J.
Mane, A.
Wagner, R.
Minot, M. J.
Renaud, J.
Deterando, M.
BE Liu, T
TI 20 cm Sealed Tube Photon Counting Detectors with Novel Microchannel
Plates for Imaging and Timing Applications
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Microchannel plate; photocathode; photon counting; atomic layer
deposition; imaging
AB As part of a collaborative program between University of California, Berkeley, the Argonne National Laboratory, University of Chicago, and several commercial companies, a 20 cm square sealed tube microchannel plate detector scheme with a proximity focused bialkali photocathode is being developed. Sealed tube microchannel plate devices have good imaging and timing characteristics, but large areas have been previously unavailable. We have made considerable progress in fabricating large size microchannel plates. A key feature is the novel implementation of low cost microchannel plates using borosilicate micro-capillary arrays with hollow core tubes. The resistive and secondary electron emissive surfaces are then applied by atomic layer deposition, eliminating the wet etch and thermal reduction processes for normal glass microchannel plates. Initial results with 33 mm format microchannel plates for gain, pulse width, imaging performance and lifetime are comparable to conventional MCPs. Large 20 cm square microchannel plate prototypes with 20 mu m and 40 mu m pores have been fabricated and initial tests show operational gain. Design and fabrication of a 20 cm sealed tube assembly is well advanced and comprises a borosilicate entrance window, a proximity focused bialkali photocathode, a pair of microchannel plates and a strip-line readout anode. The design employs a brazed ceramic walled enclosure and a transfer tube type photocathode with an indium seal. We have adopted a baseline bialkali photocathode to match the anticipated input spectrum, and have made a number of test cathodes with >20% peak quantum efficiency on borofloat-33 window material. Strip-line anodes are also being developed which will give less than 1mm spatial resolution using custom ASIC amplification and timing electronics. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Siegmund, O. H. W.; McPhate, J. B.; Tremsin, A. S.; Jelinsky, S. R.] Univ Calif Berkeley, Space Sci Lab, Expt Astrophys Grp, 7 Gauss Way, Berkeley, CA 94720 USA.
[Frisch, H. J.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Elam, J.; Mane, A.; Wagner, R.; Minot, M. J.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Minot, M. J.; Renaud, J.; Deterando, M.] Incom Inc, Charlton, MA 01507 USA.
RP Siegmund, OHW (reprint author), Univ Calif Berkeley, Space Sci Lab, Expt Astrophys Grp, 7 Gauss Way, Berkeley, CA 94720 USA.
EM ossy@ssl.berkeley.edu
FU U. S. Department of Energy Office of Science laboratory [DE- AC02-
06CH11357]
FX We wish to thank J. Hull, R. Hemphill, J. Tedesco, and Arradiance. Inc.
for their contributions to this work. This work was performed for
Argonne National Laboratory, a U. S. Department of Energy Office of
Science laboratory, operated under Contract No. DE- AC02- 06CH11357.
NR 10
TC 7
Z9 7
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 803
EP 810
DI 10.1016/j.phpro.2012.03.722
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100105
ER
PT S
AU Xie, JQ
Attenkofer, K
Demarteau, MW
Frisch, HJ
Lee, SW
Paramonov, A
Wagner, RG
Yusof, Z
AF Xie, Junqi
Attenkofer, Klaus
Demarteau, Marcel W.
Frisch, Henry J.
Lee, Seon W.
Paramonov, Alexander
Wagner, Robert G.
Yusof, Zikri
CA Large Area Picosecond
BE Liu, T
TI Instrumentation for Theory-Inspired Photocathode Development within the
Large Area Picosecond Photodetector (LAPPD) Project
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE photodetector; photocathode; instrumentation; infrastructure; spectral
response; quantum efficiency
AB We have designed and are commissioning a laboratory for the growth and characterization of photocathodes at Argonne National Laboratory. Two growth facilities, a versatile ultra high vacuum growth chamber and an industrial photomultiplier production facility, allow the investigation of fundamental aspects of the cathode growth and the development, modification and implementation of recipes in an industrial production environment. The instrumentation allows the study of optical properties, electrical behaviors and spectral response of the cathode. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Xie, Junqi; Demarteau, Marcel W.; Frisch, Henry J.; Lee, Seon W.; Paramonov, Alexander; Wagner, Robert G.; Yusof, Zikri] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
[Attenkofer, Klaus] Argonne Natl Lab, Adv Photo Source, Argonne, IL 60439 USA.
[Frisch, Henry J.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Xie, JQ (reprint author), Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
EM jxie@hep.anl.gov
RI Xie, Junqi/J-8985-2012
FU U. S. Department of Energy, Office of Science, Office of Basic Energy
Sciences and Office of High Energy Physics [DE- AC0206CH11357]
FX Work at Argonne National Laboratory was supported by the U. S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
and Office of High Energy Physics under contract DE- AC0206CH11357.
NR 8
TC 3
Z9 3
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 811
EP 819
DI 10.1016/j.phpro.2012.02.421
PG 9
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100106
ER
PT S
AU Rivera, R
Annala, J
Johnson, T
Kwan, S
Lundberg, C
Still, D
Prosser, A
Uplegger, L
Zagel, J
Zvodaya, V
AF Rivera, Ryan
Annala, Jerry
Johnson, Todd
Kwan, Simon
Lundberg, Carl
Still, Dean
Prosser, Alan
Uplegger, Lorenzo
Zagel, Jim
Zvodaya, Viktoriya
BE Liu, T
TI CMS pixel telescope addition to T-980 bent crystal collimation
experiment at the Tevatron
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE pixel detector; pixel telescope; data acquisition; crystal collimation;
Tevatron
AB An enhancement to the T-980 bent crystal collimation experiment at the Tevatron has been completed. The enhancement was the installation of a pixel telescope inside the vacuum-sealed beam pipe of the Tevatron. The telescope is comprised of six CMS PSI46 pixel plaquettes, arranged as three stations of horizontal and vertical planes, with the CAPTAN system for data acquisition and control. The purpose of the pixel telescope is to measure beam profiles produced by bent crystals under various conditions. The telescope electronics inside the beam pipe initially were not adequately shielded from the image current of the passing beams. A new shielding approach was devised and installed, which resolved the problem. The noise issues encountered and the mitigating techniques are presented herein, as well as some preliminary results from the telescope. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Rivera, Ryan; Annala, Jerry; Johnson, Todd; Kwan, Simon; Lundberg, Carl; Still, Dean; Prosser, Alan; Uplegger, Lorenzo; Zagel, Jim; Zvodaya, Viktoriya] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Rivera, R (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM rrivera@fnal.gov
NR 6
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 882
EP 890
DI 10.1016/j.phpro.2012.03.728
PG 9
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100115
ER
PT S
AU Diez, S
AF Diez, S.
CA ATLAS Upgrade Collaboration
BE Liu, T
TI System implications of the different powering distributions for the
ATLAS Upgrade strips tracker
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE ATLAS Upgrade; Strip tracker; Power distribution; Serial powering; DC-DC
powering
ID CHALLENGES; SLHC; LHC
AB This paper compares the two novel approaches for the power distribution of the ATLAS Upgrade strips tracker modules, serial and DC-DC powering, from the point of view of a system. Numerous variables have been taken into account, such as total power dissipation and power efficiency, system reliability and protection, noise performances, impact on the material budget of the tracker, and services needs and re-usability. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Diez, S.; ATLAS Upgrade Collaboration] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Diez, S (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM sdiezcornell@lbl.gov
NR 23
TC 1
Z9 1
U1 1
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 960
EP 969
DI 10.1016/j.phpro.2012.02.433
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100124
ER
PT S
AU Dowdy, R
Attenkofer, K
Frisch, H
Lee, SW
Li, XL
Ross, SR
AF Dowdy, Ryan
Attenkofer, Klaus
Frisch, Henry
Lee, Seon Woo
Li, Xiuling
Ross, Steve R.
BE Liu, T
TI Development of Ultra-Thin GaAs Photocathodes
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Photocathode; NEA; low emmittance; high quantum efficiency; device
design; visible light photodetector; non-thermalized; electron momentum;
GaAs L-valley; blue photocathode
ID ELECTRON SOURCE; WORK FUNCTION; SURFACE; TECHNOLOGY; HYDROGEN
AB An ultra thin and highly efficient photocathode structure is designed and optimized for the 400nm optical wavelength regime. The cathode thickness is comparable to the mean free path of the photoelectron allowing design concepts which are built on non-thermalized photoelectrons. Designs for ultra-low emittance and high quantum efficiency are proposed and first test structures are grown and characterized. Additionally, a discussion on the specifics of the transfer and bonding process of ultra-thin cathodes is presented. (C) 2011 Published by Elsevier BV. Selection and/or peer-review under responsibility of the organizing committee
C1 [Dowdy, Ryan; Li, Xiuling] Univ Illinois, Dept Elect & Comp Engn, Micro & Nanotechnol Lab, 208 N Wright St, Urbana, IL 61801 USA.
[Attenkofer, Klaus; Frisch, Henry] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA.
[Frisch, Henry; Lee, Seon Woo; Ross, Steve R.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Dowdy, R (reprint author), Univ Illinois, Dept Elect & Comp Engn, Micro & Nanotechnol Lab, 208 N Wright St, Urbana, IL 61801 USA.
EM rdowdy2@illinois.edu
FU U. S. Department of Energy, Office of Science, Office of Basic Energy
Sciences and Office of High Energy Physics [DE- AC0206CH11357]
FX Work at Argonne National Laboratory was supported by the U. S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
and Office of High Energy Physics under contract DE- AC0206CH11357.
NR 21
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 976
EP 984
DI 10.1016/j.phpro.2012.02.439
PG 9
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100126
ER
PT S
AU Sondheim, W
AF Sondheim, Walter
CA PHENIX Collaboration
BE Liu, T
TI Mechanics and assembly of the silicon vertex detector for the PHENIX
experiment at RHIC
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE RHIC; PHENIX; Vertex detector
ID READOUT
AB The PHENIX experiment at the Relativistic Heavy-Ion Collider explores the phase diagram of strongly interacting matter through collisions of beam of heavy nuclei. A second physics program addresses the spin structure of the nucleon through collisions of beams of polarized protons. The PHENIX apparatus has been particularly designed for lepton-pair measurements and comprises detectors for charged-particle tracking, particle identification, calorimetry and collision centrality monitors. Los mass detector systems and high-rate capability have been central to its concept. Recently a silicon vertex detector has been added to the experiment. It will extend the capabilities of PHENIX towards more refined studies involving heavy flavor physics with direct detection of decays.
The presented article addresses technical aspects of the vertex detector's mechanical construction and the assembly of its components. It contains various detailed information and may be of interest to a larger scientific and engineering community in the fields of high-energy and heavy-ion physics. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Sondheim, Walter] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Sondheim, W (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
NR 16
TC 1
Z9 1
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 993
EP 1002
DI 10.1016/j.phpro.2012.02.440
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100128
ER
PT S
AU Jung, AW
Cherry, M
Edmunds, D
Johnson, M
Matulik, M
Utes, M
Zmuda, T
AF Jung, Andreas W.
Cherry, M.
Edmunds, D.
Johnson, M.
Matulik, M.
Utes, M.
Zmuda, T.
CA SMT Grp
BE Liu, T
TI Long-term Running Experience with the Silicon Micro-strip Tracker at the
Dempty set detector
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Silicon; micro-strip; long-term operational experience
AB The Silicon Micro-strip Tracker (SMT) at the Dempty set experiment in the Fermilab Tevatron collider has been operating since 2001. In 2006, an additional layer, referred to as 'Layer 0', was installed to improve impact parameter resolution and compensate for detector degradation due to radiation damage to the original innermost SMT layer. The SMT detector provides valuable tracking and vertexing information for the experiment. This contribution will highlight aspects of the long term operation of the SMT, including the impact of the silicon readout test-stand. Due to the full integration of the test-stand into the Dempty set trigger framework, this test-stand provides an advantageous tool for training of new experts and studying subtle effects in the SMT while minimizing impact on the global data acquisition. (C) 2012 Published by Elsevier B. V. peer under responsibility of the organizing committee for TIPP 11.
C1 [Jung, Andreas W.; Cherry, M.; Edmunds, D.; Johnson, M.; Matulik, M.; Utes, M.; Zmuda, T.; SMT Grp] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Jung, AW (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
EM ajung@fnal.gov
NR 6
TC 1
Z9 1
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1003
EP 1008
DI 10.1016/j.phpro.2012.02.442
PG 6
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100129
ER
PT S
AU Back, HO
Alton, A
Calaprice, F
Galbiati, C
Goretti, A
Kendziora, C
Loer, B
Montanari, D
Mosteiro, P
Pordes, S
AF Back, H. O.
Alton, A.
Calaprice, F.
Galbiati, C.
Goretti, A.
Kendziora, C.
Loer, B.
Montanari, D.
Mosteiro, P.
Pordes, S.
BE Liu, T
TI Depleted argon from underground sources
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE argon; cryogenic; distillation; dark matter; scintillator; time
projection chamber
ID AR-39
AB Argon is a powerful scintillator and an excellent medium for detection of ionization. Its high discrimination power against minimum ionization tracks, in favor of selection of nuclear recoils, makes it an attractive medium for direct detection of WIMP dark matter. However, cosmogenic Ar-39 contamination in atmospheric argon limits the size of liquid argon dark matter detectors due to pile-up. The cosmic ray shielding by the earth means that Argon from deep underground is depleted in Ar-39. In Cortez Colorado a CO2 well has been discovered to contain approximately 500ppm of argon as a contamination in the CO2. In order to produce argon for dark matter detectors we first concentrate the argon locally to 3-5% in an Ar, N-2, and He mixture, from the CO2 through chromatographic gas separation. The N-2 and He will be removed by continuous cryogenic distillation in the Cryogenic Distillation Column recently built at Fermilab. In this talk we will discuss the entire extraction and purification process; with emphasis on the recent commissioning and initial performance of the cryogenic distillation column purification. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Back, H. O.; Calaprice, F.; Galbiati, C.; Goretti, A.; Loer, B.; Mosteiro, P.] Princeton Univ, Dept Phys, Jadwin Hall, Princeton, NJ 08544 USA.
[Kendziora, C.; Montanari, D.; Pordes, S.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Alton, A.] Augustana Coll, Dept Phys, Sioux Falls, SD 57197 USA.
RP Back, HO (reprint author), Princeton Univ, Dept Phys, Jadwin Hall, Princeton, NJ 08544 USA.
EM hback@fnal.gov
NR 9
TC 1
Z9 1
U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1105
EP 1112
DI 10.1016/j.phpro.2012.04.099
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100142
ER
PT S
AU Muether, M
AF Muether, M.
CA NOvA Collaboration
BE Liu, T
TI Initial Performance from the NO nu A Surface Prototype Detector
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE neutrino oscillations; neutrino detector technology
AB NO nu A, the NuMI Off-Axis nu(e) Appearance experiment, will study nu(mu) -> nu(e) oscillations characterized by the mixing angle theta(13). Provided theta(13) is large enough, NO nu A may ultimately determine the ordering of the neutrino masses and measure CP violation in neutrino oscillations. A complementary pair of detectors will be constructed similar to 14 mrad off beam axis to optimize the energy profile of the neutrinos. This system consists of a surface based 14 kTon liquid scintillatior tracking volume located 810 km from the main injector source (NuMI) in Ash River, Minnesota and a smaller underground 222 Ton near detector at the Fermilab. The first neutrino signals at the Ash River Site are expected prior to the 2012 accelerator shutdown. In the meantime, a near detector surface prototype has been completed and neutrinos from two Fermilab sources have been observed using the same highly segmented PVC and liquid scintillator detector system that will be deployed in the full scale experiment. Design and initial performance characteristics of this prototype system are being fed back into the design for the full NO nu A program. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Muether, M.] Fermilab Natl Accelerator Lab, Neutrino Dept, Batavia, IL 60510 USA.
RP Muether, M (reprint author), Fermilab Natl Accelerator Lab, Neutrino Dept, POB 500,MS 220, Batavia, IL 60510 USA.
EM muether@fnal.gov
NR 9
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1139
EP 1146
DI 10.1016/j.phpro.2012.02.453
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100146
ER
PT S
AU Phan-Budd, S
AF Phan-Budd, S.
CA NOvA PVC Grp
NovA Collaboration
BE Liu, T
TI Construction of PVC Extrusions for the NO nu A Near and Far Detectors
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Design of Experiments; Neutrino Mass and Mixing
AB NO nu A, or NuMI Off-Axis nu(e) Appearance experiment, is a long-baseline neutrino experiment using an off-axis beam produced by the main injector (NuMI) neutrino beamline at Fermilab. The experiment is designed to study nu(mu) to nu(e) oscillations. It consists of two PVC and liquid scintillator detectors and a beamline upgrade. The far detector weighs 14 kton and will be located in Ash River, Minnesota, 810 km from NuMI. The smaller, 220 ton near detector will be located underground at Fermi National Accelerator Laboratory. Each detector consists of planes of PVC extrusions containing liquid scintillator and wavelength shifting fiber. The PVC extrusions are made using a formula specially designed for high reflectivity, ease of extrusion and tensile qualities. Custom extrusion dies and extruding procedures have been created to ensure a uniform product that holds to strict dimensional and material tolerances. The construction of the NO nu A near detector on the surface (NDOS) extrusions will be presented, addressing the challenges of creating physics quality PVC extrusions and the QA techniques used to ensure that quality. Finally, preparations for construction of the far detector will be discussed. (C) 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Phan-Budd, S.] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Phan-Budd, S (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM sbudd@anl.gov
NR 4
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1201
EP 1208
DI 10.1016/j.phpro.2012.02.460
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100154
ER
PT S
AU Pahlka, RB
AF Pahlka, R. B.
CA NEMO-3 Collaboration
SuperNEMO Collaboration
BE Liu, T
TI An Apparatus to Search for Neutrinoless Double Beta Decay
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE NEMO-3; SuperNEMO; neutrinoless double beta decay
ID NEMO-3 DETECTOR
AB The NEMO-3 (Neutrino Ettore Majorana Observatory) experiment, located in the Modane Underground Laboratory, searches for neutrinoless double beta decay. The experiment has been taking data since 2003 with seven double beta isotopes and completed data acquisition in January 2011. Two neutrino double beta decay results for the main isotopes (7 kg of Mo-100 and 1 kg of Se-82), new results for Nd-150 and Te-130, as well as results for Zr-96 and Ca-48 are presented. NEMO-3 uses a unique technique that allows for the in situ measurement of background contamination. No evidence for neutrinoless double beta decay has been found to date. The data are also interpreted in terms of alternative models such as weak right-handed currents and Majoron emission. In this proceeding, I discussed the measurements made with NEMO-3 and discussed the status, research and design of the next generation experiment, SuperNEMO. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Pahlka, R. B.; NEMO-3 Collaboration; SuperNEMO Collaboration] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Pahlka, RB (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM pahlka@fnal.gov
NR 12
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1241
EP 1248
DI 10.1016/j.phpro.2012.02.463
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100159
ER
PT S
AU Sangiorgio, S
Bernstein, A
Coleman, J
Foxe, M
Hagmann, C
Joshi, TH
Jovanovic, I
Kazkaz, K
Movrokoridis, K
Pereverzev, S
AF Sangiorgio, S.
Bernstein, A.
Coleman, J.
Foxe, M.
Hagmann, C.
Joshi, T. H.
Jovanovic, I.
Kazkaz, K.
Movrokoridis, K.
Pereverzev, S.
BE Liu, T
TI R&D for the Observation of Coherent Neutrino-Nucleus Scatter at a
Nuclear Reactor with a Dual-Phase Argon Ionization Detector
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE coherent neutrino scatter; ionization detector; liquid argon; ionization
yield nucler recoil
AB Coherent scattering of neutrinos on nuclei is a well-predicted Standard Model interaction that has so far eluded all experimental attempts to detect it due to its extremely low-energy signature. Detection of coherent neutrino scattering relies on the ability to measure the tiny recoil energy (few keV for reactor neutrinos) of the target nucleus - a challenge that dual-phase noble-element detectors might be able to tackle, as indicated by their successful use in Dark Matter searches. For this reason, we have constructed and started to characterize a small dual-phase Argon detector as a first step toward searching for coherent neutrino-nucleus scattering at a nuclear reactor. This detector will be used to measure a key parameter: the nuclear ionization quench factor in the yet unexplored recoil energy range of few keV and below. After discussing the detector design, we will examine our plans to perform this measurement with two different techniques. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Sangiorgio, S.; Bernstein, A.; Hagmann, C.; Joshi, T. H.; Kazkaz, K.; Pereverzev, S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Joshi, T. H.] Univ Calif Berkeley, Dept Phys Nucl, Berkeley, CA 94720 USA.
[Coleman, J.; Movrokoridis, K.] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England.
[Foxe, M.; Jovanovic, I.] Penn State Univ, Dept Mech & Nucl Engn, University Pk, PA 16802 USA.
RP Sangiorgio, S (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
EM sangiorgio1@llnl.gov
FU U. S. Department of Energy by Lawrence Livermore National Laboratory
[DE- AC52- 07NA27344]; Lab- wide LDRD [LLNL- PROC- 505912]
FX The authors are grateful to R. Hill for his precious engineering
support. This work was performed under the auspices of the U. S.
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE- AC52- 07NA27344. Funded by Lab- wide LDRD. LLNL- PROC-
505912.
NR 15
TC 2
Z9 2
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1266
EP 1272
DI 10.1016/j.phpro.2012.02.465
PG 7
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100162
ER
PT S
AU Yu, B
Makowiecki, DS
Mahler, GJ
Radeka, V
Thorn, C
Baller, B
Jostlein, H
Fleming, BT
AF Yu, B.
Makowiecki, D. S.
Mahler, G. J.
Radeka, V.
Thorn, C.
Baller, B.
Jostlein, H.
Fleming, B. T.
BE Liu, T
TI Designs of Large Liquid Argon TPCs - from MicroBooNE to LBNE LAr40
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Time projection chamber; Liquid Argon TPC; LArTPC; LBNE
AB Liquid argon time projection chamber (LArTPC) is a unique technology well suited for large scale detectors of neutrinos and other rare processes. Its combination of millimeter scale 3D precision particle tracking and calorimetry with good dE/dx resolution provide excellent efficiency of particle identification and background rejection.
MicroBooNE is a LArTPC about to enter its final design phase and is scheduled for construction in 2012. Its active volume contains 86 ton of LAr. It has a 2.6m drift distance, 8256 sense wires connected to cold CMOS analog front-end electronics. Most of the TPC design features improve upon existing tried and true techniques.
The LAr40 is one of the two far detector options under consideration for the Long Baseline Neutrino Experiment (LBNE). Its conceptual design has 40 kton active liquid argon mass, to be installed underground at a moderate depth. Due to its large scale, and underground siting, great emphasis was placed on the detector cost and reliability. A modular TPC design is the key to achieve these goals. The LAr40 consists of two 20 kton detectors in one underground cavern. Each detector is in turn constructed from an array of TPC modules. Innovative concepts enable the modules to be tiled with minimal dead space.
An overview of both detectors is presented. The designs of key elements in these two TPCs are described in detail. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Yu, B.; Makowiecki, D. S.; Mahler, G. J.; Radeka, V.; Thorn, C.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Baller, B.; Jostlein, H.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Fleming, B. T.] Yale Univ, New Haven, CT 06511 USA.
RP Yu, B (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM yu@bnl.gov
NR 11
TC 5
Z9 5
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1279
EP 1286
DI 10.1016/j.phpro.2012.03.737
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100164
ER
PT S
AU Chen, H
De Geronimo, G
Lanni, F
Lissauer, D
Makowiecki, D
Radeka, V
Rescia, S
Thorn, C
Yu, B
AF Chen, H.
De Geronimo, G.
Lanni, F.
Lissauer, D.
Makowiecki, D.
Radeka, V.
Rescia, S.
Thorn, C.
Yu, B.
BE Liu, T
TI Front End Readout Electronics of the MicroBooNE Experiment
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Time projection chamber; Liquid Argon TPC; Readout electronics;
Cryogenic electronics
AB MicroBooNE experiment is to build a similar to 170 tons Liquid Argon (LAr) Time Projection Chamber (TPC) detector that will observe interactions of neutrinos from the on-axis Booster Neutrino Beam and off-axis NuMI Beam at Fermi National Accelerator Laboratory. The experiment will address the low energy excess observed by the MiniBooNE experiment, measure low energy neutrino cross sections, and serve as the necessary next step in a phased program towards massive Liquid Argon TPC detectors.
MicroBooNE TPC will have 3 readout wire planes with 8,256 wires/signal channels. All the signals will be pre-amplified, shaped, digitized and pre-processed online before recording for offline analysis of a wide variety of physics programs. To optimize the detector performance and signal-to-noise ratio, analog front end ASIC designed in 180 nm CMOS technology will be deployed and operated in LAr. Pre-amplified and shaped detector signals will be differentially driven to ADC boards operated in detector hall where signals are digitized and prepared for online data pre-processing in FPGAs. This article is an overview of the front end readout architecture of the MicroBooNE experiment, which describes the development of the front end readout electronics and preliminary test results. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Chen, H.; De Geronimo, G.; Lanni, F.; Lissauer, D.; Makowiecki, D.; Radeka, V.; Rescia, S.; Thorn, C.; Yu, B.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Chen, H (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM chc@bnl.gov
NR 6
TC 5
Z9 5
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1287
EP 1294
DI 10.1016/j.phpro.2012.02.471
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100165
ER
PT S
AU Thorn, C
De Geronimo, G
D'Andragora, A
Li, SR
Nambiar, N
Rescia, S
Vernon, E
Chen, HC
Lanni, F
Makowiecki, D
Radeka, V
Yu, B
AF Thorn, C.
De Geronimo, Gianluigi
D'Andragora, Alessio
Li, Shaorui
Nambiar, Neena
Rescia, Sergio
Vernon, Emerson
Chen, Hucheng
Lanni, Francesco
Makowiecki, Don
Radeka, Veljko
Yu, Bo
BE Liu, T
TI Cold electronics development for the LBNE LAr TPC
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Time projection chamber; Liquid argon TPC; Cryogenic electronics; CMOS
ASIC
ID DETECTOR
AB The LBNE Project is developing a design for multiple 20 kiloton liquid argon (LAr) time projection chambers to be used as the far detector for the Long Baseline Neutrino Experiment. An essential component of this design is a complete electronic readout system designed to operate in LAr (at 90K). This system is being implemented as a CMOS ASIC, in 180 nm commercial technology, that will provide low-noise readout of the signals induced on the TPC wires, digitization of those signals at 2 MS/s, zero-suppression, buffering and output multiplexing to a small number of cryostat feed-throughs. A resolution better than 1000 rms electrons at 200 pF input capacitance for an input range of 300 fC is required, along with low power (<15mW/channel) and operation in LAr with a lifetime greater than 15 years. An analog-only frontend has been successfully completed and fully evaluated, and will be used in the MicroBooNE LAr TPC. A prototype of the digital section has been fabricated and is being evaluated. The results demonstrate that CMOS transistors have lower noise and much improved dc characteristics at LAr temperature. We will describe the progress to date and plans for the remaining development. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Thorn, C.; De Geronimo, Gianluigi; D'Andragora, Alessio; Li, Shaorui; Nambiar, Neena; Rescia, Sergio; Vernon, Emerson; Chen, Hucheng; Lanni, Francesco; Makowiecki, Don; Radeka, Veljko; Yu, Bo] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Thorn, C (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM thorn@bnl.gov
NR 15
TC 4
Z9 4
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1295
EP 1302
DI 10.1016/j.phpro.2012.02.473
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100166
ER
PT S
AU Diehl, HT
AF Diehl, H. Thomas
BE Liu, T
TI The Dark Energy Survey Camera (DECam)
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Dark Energy; Dark Energy Camera; Blanco Telescope; Cerro Tolo
Inter-American Observatory
AB The Dark Energy Survey (DES) is a next generation optical survey aimed at understanding the expansion rate of the Universe using four complementary methods: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia supernovae. To perform the survey, the DES Collaboration is building the Dark Energy Camera (DECam), a 3 square degree, 570 Megapixel CCD camera that will be mounted at the prime focus of the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory. CCD production has finished, yielding roughly twice the required 62 2kx4k detectors. The construction of DECam is nearly finished. Integration and commissioning on a "telescope simulator" of the major hardware and software components, except for the optics, recently concluded at Fermilab. Final assembly of the optical corrector has started at University College, London. Some components have already been received at CTIO. "First-light" will be sometime in 2012. This oral presentation concentrates on the technical challenges involved in building DECam (and how we overcame them), and the present status of the instrument. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Diehl, HT (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM Diehl@FNAL.GOV
NR 38
TC 14
Z9 14
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1332
EP 1340
DI 10.1016/j.phpro.2012.02.472
PG 9
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100171
ER
PT S
AU Wang, G
Yefremenko, V
Novosad, V
Pearson, J
Divan, R
Chang, CL
Bleem, L
Crites, AT
Mehl, J
Benson, BA
Natoli, T
Story, K
Meyer, SS
Carlstrom, JE
McMahon, J
Sayre, J
Ruhl, J
George, E
Harrington, N
Reichardt, C
Shirokoff, E
Young, E
Lee, A
Holzapfel, W
AF Wang, G.
Yefremenko, V.
Novosad, V.
Pearson, J.
Divan, R.
Chang, C. L.
Bleem, L.
Crites, A. T.
Mehl, J.
Benson, B. A.
Natoli, T.
Story, K.
Meyer, S. S.
Carlstrom, J. E.
McMahon, J.
Sayre, J.
Ruhl, J.
George, E.
Harrington, N.
Reichardt, C.
Shirokoff, E.
Young, E.
Lee, A.
Holzapfel, W.
BE Liu, T
TI An Absorber-coupled TES Bolometer for Measuring CMB Polarization
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Bolometer; Transition edge sensor; Heat transport; CMB
ID SILICON; SCATTERING
AB We report an absorber-coupled superconducting Transition Edge Sensor (TES) bolometric polarimeter for measuring Cosmic Microwave Background (CMB) B-mode polarization. The polarimeter consists of a dipole-like PdAu absorber and a Mo/Au bi-layer TES on a suspended silicon nitride rectangle. Its design, fabrication, thermal properties, and optical performance are presented. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Wang, G.; Chang, C. L.; Carlstrom, J. E.] Argonne Natl Lab, Div High Energy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Yefremenko, V.; Novosad, V.; Pearson, J.] Argonne Natl Lab, Mat Sci Div, Argonne, IL 60439 USA.
[Divan, R.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Chang, C. L.; Bleem, L.; Crites, A. T.; Mehl, J.; Benson, B. A.; Natoli, T.; Story, K.; Meyer, S. S.; Carlstrom, J. E.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA.
[McMahon, J.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA.
[George, E.; Harrington, N.; Reichardt, C.; Shirokoff, E.; Young, E.; Lee, A.; Holzapfel, W.] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA.
[Sayre, J.; Ruhl, J.] Univ Calif, Dept Phys, Berkeley, CA 94720 USA.
RP Wang, G (reprint author), Argonne Natl Lab, Div High Energy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM gwang@anl.gov
RI Novosad, Valentyn/C-2018-2014; Holzapfel, William/I-4836-2015; Novosad,
V /J-4843-2015
FU NIST Quantum Sensors Group at Boulder for providing SQUIDs; Office of
Science and Office of Basic Energy Sciences of the U. S. Department of
Energy [DE-AC02-06CH11357]; NSF [ANT-0638937]; NSF Physics Frontier
Center [PHY-0114422]; Kavli Institute of Cosmological Physics at the
University of Chicago; Kavli Foundation; Gordon and Betty Moore
Foundation
FX The authors wish to acknowledge the support from the NIST Quantum
Sensors Group at Boulder for providing SQUIDs, and to thank Matthew E.
Kenyon at JPL for suggestions in devices fabrication. The work at
Argonne National Laboratory, including the use of facility at the Center
for Nanoscale Materials ( CNM), is supported by Office of Science and
Office of Basic Energy Sciences of the U. S. Department of Energy, under
Contract No. DE-AC02-06CH11357. The work at the University of Chicago is
supported by the NSF through grant ANT-0638937 and the NSF Physics
Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological
Physics at the University of Chicago. It also receives generous support
from the Kavli Foundation and the Gordon and Betty Moore Foundation.
NR 18
TC 0
Z9 0
U1 0
U2 5
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1349
EP 1354
DI 10.1016/j.phpro.2012.02.468
PG 6
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100173
ER
PT S
AU Zitzer, B
AF Zitzer, Benjamin
CA VERITAS Collaboration
BE Liu, T
TI Upgrade plans for VERITAS
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE VERITAS; IACT; Photomulitplier Tube; FPGA; TeV Astronomy; VHE Astronomy
ID TELESCOPE
AB The VERITAS array, consisting of four 12m diameter Cherenkov telescopes, has been observing the northern sky in VHE gamma rays (E > 100 GeV) for four years with high sensitivity (1% Crab Nebula flux in similar to 25 hours), with excellent energy and angular resolution. Exciting new results on a variety of VHE gamma-ray sources, both galactic and extra-galactic, have been obtained. Technical developments and Monte Carlo simulation results suggest that substantial further improvements to the array performance are possible. Here we present details of the planned upgrade of the VERITAS camera and trigger electronics. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 11.
C1 [Zitzer, Benjamin] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
RP Zitzer, B (reprint author), Argonne Natl Lab, Div High Energy Phys, Bldg 362, Argonne, IL 60439 USA.
EM bzitzer@hep.anl.gov
NR 7
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1365
EP 1372
DI 10.1016/j.phpro.2012.03.740
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100175
ER
PT S
AU Kubik, D
AF Kubik, Donna
BE Liu, T
TI The Fermilab Large Cold Blackbody Test Stand for CMB R&D
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE QUIET; cosmic microwave background; polarization; microwave receivers
AB The Fermilab Large Cold Blackbody Test Stand can be used to expose a microwave receiver and horn assembly to a large blackbody at cryogenic temperatures (as low as 20 K). The temperature of the blackbody can be varied while keeping the receiver temperature constant, facilitating Y-factor measurements of the receiver noise temperature and gain. The test stand has recently been used for studying a QUIET-I receiver module. The test stand will be used to measure both QUIET-I and prototype QUIET-II modules. (C) 2011 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Kubik, Donna] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Kubik, D (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM kubik@fnal.gov
NR 7
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1421
EP 1426
DI 10.1016/j.phpro.2012.03.743
PG 6
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100182
ER
PT S
AU Kubik, D
AF Kubik, Donna
CA Dark Energy Survey Collaboration
BE Liu, T
TI CCD testing for DECam (Dark Energy Survey Camera)
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE CCDs; focal plane arrays
AB The Dark Energy Survey Camera (DECam) will be comprised of a mosaic of 74 charge-coupled devices (CCDs). The DES science goals set stringent technical requirements for the CCDs. The CCDs are provided by LBNL with valuable cold probe data at 233 K, providing an indication of which CCDs are more likely to pass. After comprehensive testing of 270 CCDs at 273 K, 124 qualify as science grade. Testing this large number of CCDs to determine which best meet the DES requirements is a very time-consuking task. We developed a multistage testing program to automatically collect and analyze CCD test data. (C) 2011 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Kubik, Donna] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Kubik, D (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM kubik@fnal.gov
NR 6
TC 1
Z9 1
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1427
EP 1434
DI 10.1016/j.phpro.2012.03.744
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100183
ER
PT S
AU Soares-Santos, M
Annis, J
Bonati, M
Buckley-Geer, E
Cease, H
DePoy, D
Derylo, G
Diehl, HT
Elliott, A
Estrada, J
Finley, D
Flaugher, B
Frieman, J
Hao, J
Honscheid, K
Karliner, I
Krempetz, K
Kuehn, K
Kuhlmann, S
Kuk, K
Lin, H
Merrit, W
Neilsen, E
Scott, L
Serrano, S
Shaw, T
Schultz, K
Stuermer, W
Sypniewski, A
Thaler, J
Walker, A
Walton, J
Wester, W
Yanny, B
AF Soares-Santos, M.
Annis, J.
Bonati, M.
Buckley-Geer, E.
Cease, H.
DePoy, D.
Derylo, G.
Diehl, H. T.
Elliott, A.
Estrada, J.
Finley, D.
Flaugher, B.
Frieman, J.
Hao, J.
Honscheid, K.
Karliner, I.
Krempetz, K.
Kuehn, K.
Kuhlmann, S.
Kuk, K.
Lin, H.
Merrit, W.
Neilsen, E.
Scott, L.
Serrano, S.
Shaw, T.
Schultz, K.
Stuermer, W.
Sypniewski, A.
Thaler, J.
Walker, A.
Walton, J.
Wester, W.
Yanny, B.
CA Des Collaboration
BE Liu, T
TI DECam integration tests on telescope simulator
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Dark Energy; CCD; camera; survey
AB The Dark Energy Survey (DES) is a next generation optical survey aimed at measuring the expansion history of the universe using four probes: weak gravitational lensing, galaxy cluster counts, baryon acoustic oscillations, and Type Ia supernovae. To perform the survey, the DES Collaboration is building the Dark Energy Camera (DECam), a 3 square degree, 570 Megapixel CCD camera which will be mounted at the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory. DES will survey 5000 square degrees of the southern galactic cap in 5 filters (g, r, i, z, Y). DECam will be comprised of 74 250 micron thick fully depleted CCDs: 62 2k x 4k CCDs for imaging and 12 2k x 2k CCDs for guiding and focus. Construction of DECam is nearing completion. In order to verify that the camera meets technical specifications for DES and to reduce the time required to commission the instrument, we have constructed a full sized telescope simulator and performed full system testing and integration prior to shipping. To complete this comprehensive test phase we have simulated a DES observing run in which we have collected 4 nights worth of data. We report on the results of these unique tests performed for the DECam and its impact on the experiment's progress. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Soares-Santos, M.; Annis, J.; Buckley-Geer, E.; Cease, H.; Derylo, G.; Diehl, H. T.; Estrada, J.; Finley, D.; Flaugher, B.; Frieman, J.; Hao, J.; Krempetz, K.; Kuk, K.; Lin, H.; Merrit, W.; Neilsen, E.; Scott, L.; Shaw, T.; Schultz, K.; Stuermer, W.; Wester, W.; Yanny, B.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Soares-Santos, M (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM marcelle@fnal.gov
NR 32
TC 2
Z9 2
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1445
EP 1452
DI 10.1016/j.phpro.2012.02.480
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100185
ER
PT S
AU Zheng, B
Walder, JP
von der Lippe, H
Moses, W
Janecek, M
AF Zheng, Bob
Walder, Jean-Pierre
von der Lippe, Henrik
Moses, William
Janecek, Martin
BE Liu, T
TI A High-speed Adaptively-biased Current-to-current Front-end for SSPM
Arrays
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE SSPM; SiPM; G-APD; Anger logic; Resistor ladder; Current conveyor; ASIC;
PET
ID PET; PHOTOMULTIPLIER
AB Solid-state photomultiplier (SSPM) arrays are an interesting technology for use in PET detector modules due to their low cost, high compactness, insensitivity to magnetic fields, and sub-nanosecond timing resolution. However, the large intrinsic capacitance of SSPM arrays results in RC time constants that can severely degrade the response time, which leads to a trade-off between array size and speed. Instead, we propose a front-end that utilizes an adaptively biased current-to-current converter that minimizes the resistance seen by the SSPM array, thus preserving the timing resolution for both large and small arrays. This enables the use of large SSPM arrays with resistive networks, which creates position information and minimizes the number of outputs for compatibility with general PET multiplexing schemes. By tuning the bias of the feedback amplifier, the chip allows for precise control of the close-loop gain, ensuring stability and fast operation from loads as small as 50pF to loads as large as 1nF. The chip has 16 input channels, and 4 outputs capable of driving 100 Omega loads. The power consumption is 12mW per channel and 360mW for the entire chip. The chip has been designed and fabricated in an AMS 0.35um high-voltage technology, and demonstrates a fast rise-time response and low noise performances. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Zheng, Bob; Walder, Jean-Pierre; von der Lippe, Henrik; Moses, William; Janecek, Martin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Zheng, B (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
NR 12
TC 0
Z9 0
U1 1
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1473
EP 1479
DI 10.1016/j.phpro.2012.04.102
PG 7
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100189
ER
PT S
AU Contarato, D
Denes, P
Doering, D
Joseph, J
Krieger, B
AF Contarato, Devis
Denes, Peter
Doering, Dionisio
Joseph, John
Krieger, Brad
BE Liu, T
TI High Speed, Radiation Hard CMOS Pixel Sensors for Transmission Electron
Microscopy
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Monolithic active pixel sensors; Transmission Electron Microscopy
ID DETECTOR
AB CMOS monolithic active pixel sensors are currently being established as the technology of choice for new generation digital imaging systems in Transmission Electron Microscopy (TEM). A careful sensor design that couples mu m-level pixel pitches with high frame rate readout and radiation hardness to very high electron doses enables the fabrication of direct electron detectors that are quickly revolutionizing high-resolution TEM imaging in material science and molecular biology. This paper will review the principal characteristics of this novel technology and its advantages over conventional, optically-coupled cameras, and retrace the sensor development driven by the Transmission Electron Aberration-corrected Microscope (TEAM) project at the LBNL National Center for Electron Microscopy (NCEM), illustrating in particular the imaging capabilities enabled by single electron detection at high frame rate. Further, the presentation will report on the translation of the TEAM technology to a finer feature size process, resulting in a sensor with higher spatial resolution and superior radiation tolerance currently serving as the baseline for a commercial camera system. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Contarato, Devis; Denes, Peter; Doering, Dionisio; Joseph, John; Krieger, Brad] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Contarato, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM DContarato@lbl.gov
NR 16
TC 5
Z9 5
U1 2
U2 6
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1504
EP 1510
DI 10.1016/j.phpro.2012.04.103
PG 7
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100193
ER
PT S
AU Ramberg, EJ
AF Ramberg, Erik J.
BE Liu, T
TI A Summary of Timing Measurements at Fermilab for PET-TOF
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Photodetectors; medical imaging; PET-TOF; fast timing
ID TEST BEAM FACILITY
AB One of the key parameters of new photodetectors for use in medical imaging is their excellent timing resolution. Fermilab has been investigating the timing properties of microchannel plate photomultipliers and silicon photomultipliers, with measurements in the lab and at Fermilab's Test Beam Facility. We report on the technology we use to obtain picosecond level measurements and discuss the systematics involved in these measurements. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Ramberg, EJ (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM ramberg@fnal.gov
NR 6
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1518
EP 1522
DI 10.1016/j.phpro.2012.05.328
PG 5
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100195
ER
PT S
AU Abramovitch, J
Arviddson, B
Dunn, K
Gong, DT
Huffman, T
Issever, C
Jones, M
Kerridge, C
Kierstead, J
Kuyt, G
Liu, CH
Liu, TK
Povey, A
Regnier, E
Ryder, NC
Tassie, N
Weidberg, T
Xiang, ANC
Ye, JB
AF Abramovitch, Joshua
Arviddson, B.
Dunn, K.
Gong, Datao
Huffman, Todd
Issever, C.
Jones, M.
Kerridge, Cotty
Kierstead, James
Kuyt, G.
Liu, Chonghan
Liu, Tiankuan
Povey, A.
Regnier, E.
Ryder, N. C.
Tassie, Nnadozie
Weidberg, Tony
Xiang, Annie C.
Ye, Jingbo
BE Liu, T
TI The radiation tolerance of specific optical fibers for the LHC upgrades
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Radiation damage to electronic components; Radiation damage evaluation
methods; Optical detector readout concepts
AB Optical fibers in the readout system for the Large Hadron Collider (LHC) upgrades will operate in a harsh radiactive environment. The fibers within 12 meters from the front-end detectors are exposed up to total ionizing dose of 250 kGy(Si) in their 10 year operational lifetime. In some applications, the fibers within the tracking volume are kept in a cold environment near -25 degrees C. The paper presents the identification of suitable optical fibers for the LHC detector upgrades. Several optical fibers have been tested to 650 kGy(Si) at room temperature with various dose rates of Co-60 gamma rays. Two multi-mode fibers and one single-mode fiber have been qualified for use in the LHC upgrades for warm operations. Four optical fibers have been tested to 500 kGy(Si) at -25 degrees C with 27 kGy(Si)/hr Co-60 gamma rays. Two SM fibers have been qualified for the LHC upgrades for cold operations. Several optical fibers, including two MM fibers, have been tested up to 11 kGy(Si) at -25 degrees C with 70 Gy(Si)/hr Co-60 gamma rays and exhibited moderate radiation induced attenuation (RIA, indicating that all tested fibers are potential candidates for the LHC upgrades for warm and cold operations. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Abramovitch, Joshua; Gong, Datao; Kerridge, Cotty; Liu, Chonghan; Liu, Tiankuan; Tassie, Nnadozie; Xiang, Annie C.; Ye, Jingbo] So Methodist Univ, Dept Phys, 3215 Daniel Ave, Dallas, TX 75275 USA.
[Arviddson, B.] Ericsson Network Technol AB, S-82482 Hudiksvall, Sweden.
[Dunn, K.; Huffman, Todd; Issever, C.; Jones, M.; Povey, A.; Ryder, N. C.; Weidberg, Tony] Univ Oxford, Oxford OX1 2JD, England.
[Kierstead, James] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Kuyt, G.; Regnier, E.] Draka Commun, F-94160 Marcoussis, France.
RP Abramovitch, J (reprint author), So Methodist Univ, Dept Phys, 3215 Daniel Ave, Dallas, TX 75275 USA.
EM jabramovit@smu.edu
FU US- ATLAS; Hamilton Scholars Program at SMU
FX This research is supported by US- ATLAS and the Hamilton Scholars
Program at SMU. The authors would like to thank Drs. Stephen L. Kramer
and Peter Cameron at Brookhaven National Laboratory; Drs. Jan Troska and
at Fermi National Laboratory for their collaboration and guidance with
this research.
NR 10
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PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1632
EP 1643
PG 12
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100209
ER
PT S
AU Caminada, L
AF Caminada, Lea
BE Liu, T
TI Recent Developments of HEP Pixel Detector Readout Chips
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Pixel Detectors; Semiconductor Detectors; LHC; Front-End Electronics
AB This article reviews the development of readout integrated circuits for hybrid pixel particle physics detectors. The 250-nm feature size chips in the presently operating ATLAS and CMS experiments are compared with the current state of the art in 130-nm feature size represented by the FE-I4 chip that will be used to add a new beam pipe layer for the ATLAS experiment in 2013 and the upgrade options of the CMS pixel readout chip. This includes a discussion of the array and pixel size, analog performance, readout architecture, power consumption, power distribution options and radiation hardness. Finally, recent work in 65-nm feature size as a means to continue the evolution of readout chip technology towards smaller feature size, higher rate, and lower power is presented. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Caminada, L (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM lcaminada@lbl.gov
NR 19
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PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1644
EP 1653
DI 10.1016/j.phpro.2012.02.488
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100210
ER
PT S
AU Grace, C
Gnani, D
Walder, JP
Zheng, B
AF Grace, Carl
Gnani, Dario
Walder, Jean-Pierre
Zheng, Bob
BE Liu, T
TI A Flexible Front-End Signal Processor for High-Speed Image Sensor
Readout
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
AB The High-Speed Image Pre-Processor with Oversampling (HIPPO) is a prototype image sensor readout integrated circuit designed for both high performance and enhanced flexibility. HIPPO's initial target application is the instrumentation of bufferless, column-parallel, soft x-ray Charge-Coupled Device (CCD) image sensors operating at column rates up to 10 MHz, enabling 10,000 frames-per-second (fps) video rates. HIPPO's architecture is flexible and allows design tradeoffs between speed, accuracy, and area. This architectural flexibility will enable the fast development of related image sensor and particle detector readout ICs based on HIPPO technology. HIPPO contains 16 channels, each comprising a charge amplifier, a dual-slope correlated double sampler, a sample-and-hold, a multiplexed 12b, 80 MS/s pipelined ADC (one ADC for every 4 channels), and a 480 Mb/s output serializer.
HIPPO achieves 35 e-read noise at 10,000 fps for a 1 Mpixel sensor, improving to 24 e-at 5000 fps. HIPPO's charge-domain input obviates the source follower amplifier used in most CCDs and enables the implementation of a fully column-parallel CCD architecture. HIPPO was specifically designed to be flexible in both the sequencing of its operations and in its ability to accommodate input rates potentially varying over an order of magnitude.
C1 [Grace, Carl] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Grace, C (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
NR 3
TC 1
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PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1674
EP 1689
DI 10.1016/j.phpro.2012.02.491
PG 16
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100213
ER
PT S
AU Chen, HC
AF Chen, Hucheng
CA ATLAS Liquid Argon Calorimeter Grp
BE Liu, T
TI Readout Electronics for the ATLAS LAr Calorimeter at HL-LHC
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Liquid Argon calorimeter; Readout electronics; Radiation hardness
AB The ATLAS Liquid Argon (LAr) calorimeters are high precision, high sensitivity and high granularity detectors designed to provide precision measurements of electrons, photons, jets and missing transverse energy. ATLAS and its LAr calorimeters have been operating and collecting proton-proton collisions at LHC since 2009. The current front-end electronics of the LAr calorimeters need to be upgraded to sustain the higher radiation levels and data rates expected at the upgraded high luminosity LHC machine (HL-LHC), which will have 5 times more luminosity than the LHC in its ultimate configuration. The complexity of the present electronics and the obsolescence of some of components of which it is made, will not allow a partial replacement of the system. A completely new readout architecture scheme is under study and many components are being developed in various R&D programs of the LAr Calorimeter Group.
The new front-end readout electronics will send data continuously at each bunch crossing through high speed radiation resistant optical links. The data will be processed real-time with the possibility of implementing trigger algorithms for clusters and electron/photon identification at a higher granularity than that which is currently implemented. The new architecture will eliminate the intrinsic limitation presently existing on Level-1 trigger acceptance. This article is an overview of the R&D activities which covers architectural design aspects of the new electronics as well as some detailed progress on the development of several ASICs needed, and preliminary studies with FPGAs to cover the backend functions including part of the Level-1 trigger requirements. A recently proposed staged upgrade with hybrid Tower Builder Board (TBB) is also described. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Chen, Hucheng; ATLAS Liquid Argon Calorimeter Grp] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Chen, HC (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM chc@bnl.gov
NR 8
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PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1720
EP 1729
DI 10.1016/j.phpro.2012.02.494
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100218
ER
PT S
AU Rajagopalan, S
AF Rajagopalan, S.
CA ATLAS Collaboration
BE Liu, T
TI The Performance of the ATLAS Trigger System in the LHC proton-proton
Collisions
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE ATLAS; Trigger; DAQ
AB The ATLAS Trigger System has collected proton- proton collisions over six orders of magnitude in instantaneous luminosity during the 2010- 2011 LHC running. The trigger system is designed to reduce the collision rate from 40 MHz to 200 Hz using a hardware- based Level 1 (L1) trigger and a software- based High Level Trigger (HLT). The trigger selection is based on identifying object candidates, such as electrons, photons, muons, tau leptons, and jets as well as global event features, such as missing transverse energy. This report will present the commissioning, operations and performance of the ATLAS trigger system with a focus on the performance of the system with respect to data collected for physics analysis. We describe how the trigger system has evolved with increasing LHC luminosity and give a brief overview of plans for higher luminosity LHC running. (c) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Rajagopalan, S.; ATLAS Collaboration] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Rajagopalan, S (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 10
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PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1781
EP 1790
DI 10.1016/j.phpro.2012.02.503
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100226
ER
PT S
AU Fernando, W
Delurgio, P
Salvachua, B
Stanek, R
Underwood, D
Lopez, D
AF Fernando, W.
Delurgio, P.
Salvachua, B.
Stanek, R.
Underwood, D.
Lopez, D.
BE Liu, T
TI Optical Data Links - Technology for Reliability and Free Space Links
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Optical modulators; Free-space communnication; Optical communication;
MEMS mirrors; Optical links for HEP
AB We discuss the advantages of various kinds of light modulators with respect to Vertical Cavity Surface Emitting Lasers (VCSELs) in terms of potential reliability, radiation hardness, and low power consumption. We also discuss free space optical links which could use these modulators as well as MEMS mirrors and other technology which we are developing. (c) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Fernando, W.; Delurgio, P.; Salvachua, B.; Stanek, R.; Underwood, D.] Argonne Natl Lab, High Eergy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Lopez, D.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Fernando, W (reprint author), Argonne Natl Lab, High Eergy Phys, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM dgu@hep.anl.gov
FU U.S.Department of Energy [DE-AC02-06CH11357]; Division of High Energy
Physics [KA-15-03-02]
FX The authors would like to thank the HEP Division electronics group for
assisting in the filter development and frequency measurements. This
work was supported in part by the U.S.Department of Energy, under
Contract ( DE-AC02-06CH11357) and Division of High Energy Physics, under
Contract KA-15-03-02.
NR 13
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U1 0
U2 2
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1805
EP 1812
DI 10.1016/j.phpro.2012.02.507
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100229
ER
PT S
AU Badgett, W
Chakaberia, I
Lopez-Perez, JA
Maeshima, K
Maruyama, S
Soha, A
Sulmanas, B
Wan, ZR
AF Badgett, William
Chakaberia, Irakli
Lopez-Perez, Juan Antonio
Maeshima, Kaori
Maruyama, Sho
Soha, Aron
Sulmanas, Balys
Wan, Zongru
BE Liu, T
TI CMS Online Web-Based Monitoring
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Web-based monitoring; Online
AB For large international High Energy Physics experiments, modern web technologies make the online monitoring of detector status, data acquisition status, trigger rates, luminosity, etc., accessible for the collaborators anywhere and anytime. This helps the collaborating experts monitor the status of the experiment, identify the problems and improve data taking efficiency. We present the online Web-Based Monitoring project of the CMS experiment at the LHC at CERN. The data sources are relational databases and various messaging systems. The project provides a vast amount of in-depth information including real-time data, historical trends and correlations in a user-friendly way. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the organizing committee for TIPP 2011.
C1 [Badgett, William; Lopez-Perez, Juan Antonio; Maeshima, Kaori; Maruyama, Sho; Soha, Aron; Sulmanas, Balys; Wan, Zongru] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
[Chakaberia, Irakli; Wan, Zongru] Kansas State Univ, Manhattan, KS 66506 USA.
[Wan, Zongru] SUNY Buffalo, Buffalo, NY 14260 USA.
[Maruyama, Sho] Univ Calif Davis, Livermore, CA 95616 USA.
RP Badgett, W (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM zrwan@fnal.gov
NR 1
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PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1869
EP 1875
DI 10.1016/j.phpro.2012.02.510
PG 7
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100238
ER
PT S
AU Chramowicz, J
Kwan, S
Prosser, AG
Winchell, M
AF Chramowicz, J.
Kwan, S.
Prosser, A. G.
Winchell, M.
BE Liu, T
TI Applications of emerging parallel optical link technology to high energy
physics experiments
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Versatile Link; parallel optics; fibre optic communications
AB Modern particle detectors depend upon optical fiber links to deliver event data to upstream trigger and data processing systems. Future detector systems can benefit from the development of dense arrangements of high speed optical links emerging from the telecommunications and storage area network market segments. These links support data transfers in each direction at rates up to 120 Gbps in packages that minimize or even eliminate edge connector requirements. Emerging products include a class of devices known as optical engines which permit assembly of the optical transceivers in close proximity to the electrical interfaces of ASICs and FPGAs which handle the data in parallel electrical format. Such assemblies will reduce required printed circuit board area and minimize electromagnetic interference and susceptibility. We will present test results of some of these parallel components and report on the development of pluggable FPGA Mezzanine Cards equipped with optical engines to provide to collaborators on the Versatile Link Common Project for the HI-LHC at CERN. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Chramowicz, J.; Kwan, S.; Prosser, A. G.; Winchell, M.] Fermilab Natl Accelerator Lab, Dept Elect Syst Engn, Batavia, IL 60510 USA.
RP Prosser, AG (reprint author), Fermilab Natl Accelerator Lab, Dept Elect Syst Engn, Batavia, IL 60510 USA.
EM aprosser@fnal.gov
NR 2
TC 0
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U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1917
EP 1924
DI 10.1016/j.phpro.2012.02.513
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100244
ER
PT S
AU Liu, T
Hoff, J
Deptuch, G
Yarema, R
AF Liu, Ted
Hoff, Jim
Deptuch, Grzegorz
Yarema, Ray
BE Liu, T
TI A New Concept of Vertically Integrated Pattern Recognition Associative
Memory
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE 3D Integration; Content Addressable Memories; CAM; Tracking Trigger;
Associative Memory; Pattern Recognition
ID CDF
AB Hardware-based pattern recognition for fast triggering on particle tracks has been successfully used in high-energy physics experiments for some time. The CDF Silicon Vertex Trigger (SVT) at the Fermilab Tevatron is an excellent example. The method used there, developed in the 1990's, is based on algorithms that use a massively parallel associative memory architecture to identify patterns efficiently at high speed. However, due to much higher occupancy and event rates at the LHC, and the fact that the LHC detectors have a much larger number of channels in their tracking detectors, there is an enormous challenge in implementing fast pattern recognition for a track trigger, requiring about three orders of magnitude more associative memory patterns than what was used in the original CDF SVT. Scaling of current technologies is unlikely to satisfy the scientific needs of the future, and investments in transformational new technologies need to be made. In this paper, we will discuss a new concept of using the emerging 3D vertical integration technology to significantly advance the state-of-the-art for fast pattern recognition within and outside HEP. A generic R&D proposal [1] based on this new concept, with a few institutions involved, has recently been submitted to DOE with the goal to design and perform the ASIC engineering necessary to realize a prototype device. The progress of this R&D project will be reported in the future. Here we will only focus on the concept of this new approach. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Liu, Ted; Hoff, Jim; Deptuch, Grzegorz; Yarema, Ray] Fermilab Natl Accelerator Lab, Particle Phys Div, Batavia, IL 60510 USA.
RP Liu, T (reprint author), Fermilab Natl Accelerator Lab, Particle Phys Div, POB 500, Batavia, IL 60510 USA.
EM thliu@fnal.gov; jimhoff@fnal.gov
NR 12
TC 5
Z9 5
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 1973
EP 1982
DI 10.1016/j.phpro.2012.02.521
PG 10
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100251
ER
PT S
AU Mokhov, NV
Striganov, SI
AF Mokhov, N. V.
Striganov, S. I.
BE Liu, T
TI Detector Backgrounds at Muon Colliders
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Muon collider; backgrounds; Monte Carlo; MARS15
AB The physics goals of a Muon Collider (MC) can only be achieved with appropriate, self-consistent designs of the ring, interaction region (IR), high-field superconducting magnets, machine-detector interface (MDI) and detector. Recent results from realistically-implemented simulation studies are presented here for a 1.5-TeV MC. It is shown that if the IR and MDI are designed with appropriate shielding, background rates are significantly suppressed in the MC detector. The main characteristics of these backgrounds are also presented. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Mokhov, N. V.; Striganov, S. I.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Mokhov, NV (reprint author), Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
EM mokhov@fnal.gov
NR 8
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 2015
EP 2022
DI 10.1016/j.phpro.2012.03.761
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100257
ER
PT S
AU Warner, A
Wu, J
AF Warner, A.
Wu, J.
BE Liu, T
TI Cryogenic Loss Monitors with FPGA TDC Signal Processing
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Cryogenic Loss Monitors; Dark Current; FPGA-TDC
AB Radiation hard helium gas ionization chambers capable of operating in vacuum at temperatures ranging from 5K to 350K have been designed, fabricated and tested and will be used inside the cryostats at Fermilab's Superconducting Radiofrequency beam test facility. The chamber vessels are made of stainless steel and all materials used including seals are known to be radiation hard and suitable for operation at 5K. The chambers are designed to measure radiation up to 30 kRad/hr with sensitivity of approximately 1.9 pA/(Rad/hr). The signal current is measured with a recycling integrator current-to-frequency converter to achieve a required measurement capability for low current and a wide dynamic range. A novel scheme of using an FPGA-based time-to-digital converter (TDC) to measure time intervals between pulses output from the recycling integrator is employed to ensure a fast beam loss response along with a current measurement resolution better than 10-bit. This paper will describe the results obtained and highlight the processing techniques used. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Warner, A.; Wu, J.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Warner, A (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM warner@fnal.gov
NR 4
TC 0
Z9 0
U1 1
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 2031
EP 2038
DI 10.1016/j.phpro.2012.03.762
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100259
ER
PT S
AU Faus-Golfe, A
Gonzalvo, JA
Gutierrez, CB
McCormick, D
Cruz, J
Woodley, M
White, G
AF Faus-Golfe, A.
Gonzalvo, J. Alabau
Gutierrez, C. Blanch
McCormick, D.
Cruz, J.
Woodley, M.
White, G.
BE Liu, T
TI Multi-OTR System for ATF2
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE Optical Transition Radiation; Beam Size Measurement; Emittance
Measurement
AB In this paper we describe the first measurements performed during fall of 2010 and the beginning of 2011. We discuss software development, realistic simulations and new hardware improvements of a Multi-Optical Transition Radiation System installed in the beam diagnostics section of the Extraction (EXT) line of ATF2, close to the Multi Wire Scanner System. 2D emittance measurements have been successfully demonstrated and the system is being routinely used for coupling correction. Realistic beam simulations have been made and compared with measurements. A 4D emittance procedure is being prepared and some preliminary measurements have been performed. An improved optical system including a demagnifier lens to improve the beam finding procedure is being designed and will be installed during the autumn 2011 operations period. A systematic measurement campaign will take place after recovery of ATF operations (post the 2011 Tohoku Earthquake), then a comparison with wire scanners can be done. This will be a definitive test of the OTR as a beam emittance diagnostic device, which will provide fast beam emittance measurements with high statistics, giving a low error and a good understanding of emittance jitter and sources.
C1 [Faus-Golfe, A.; Gonzalvo, J. Alabau; Gutierrez, C. Blanch] UV, CSIC, Inst Fis Corpuscular, Paterna, Spain.
[Cruz, J.; Woodley, M.; White, G.] Stanford Linear Accelerator, Menlo Pk, CA USA.
RP Faus-Golfe, A (reprint author), UV, CSIC, Inst Fis Corpuscular, Paterna, Spain.
EM Angeles.Faus-Golfe@uv.es
FU ATF group at KEK
FX We would like to thank the ATF group at KEK for all the support,
especially N. Terunuma for his continuous help on the installation
NR 11
TC 0
Z9 0
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 2072
EP 2079
DI 10.1016/j.phpro.2012.02.525
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100264
ER
PT S
AU Briegel, C
Heikkinen, DS
Jensen, DA
Ibrahim, MA
McClure, C
Prieto, P
Purcell-Taylor, LS
Schoo, D
Tassotto, G
AF Briegel, Charlie
Heikkinen, Dallas S.
Jensen, D. A.
Ibrahim, M. A.
McClure, C.
Prieto, Peter
Purcell-Taylor, Linda Sue
Schoo, Daniel
Tassotto, Gianni
BE Liu, T
TI NuMI primary beam monitoring
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE NuMI; Beam; BPM; SEM; Toroid
AB The position and intensity of the Fermilab Main Injector 128 GeV proton beam being delivered to NuMI have been monitored since the start of beam delivery in 2005. The results of this monitoring, and the monitoring of the performance of the instrumentation are discussed. Upgrades to and tests of improved SEM (multiwire Secondary Emission Monitors) are also discussed. (C) 2012 Published by Elsevier B. V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.
C1 [Briegel, Charlie; Heikkinen, Dallas S.; Jensen, D. A.; Ibrahim, M. A.; McClure, C.; Prieto, Peter; Purcell-Taylor, Linda Sue; Schoo, Daniel; Tassotto, Gianni] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Briegel, C (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM DJensen@fnal.gov
NR 4
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 2106
EP 2113
DI 10.1016/j.phpro.2012.04.112
PG 8
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100268
ER
PT S
AU Scarpine, VE
AF Scarpine, Victor E.
BE Liu, T
TI Transverse Beam Shape Measurements of Intense Proton Beams Using Optical
Transition Radiation
SO PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND
INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
SE Physics Procedia
LA English
DT Proceedings Paper
CT 2nd International Conference on Technology and Instrumentation in
Particle Physics (TIPP)
CY JUN 09-14, 2011
CL Chicago, IL
SP Fermilab, NSF, Fermi Res Alliance, APS Phys, U S Dept Energy, Argonne Natl Lab, Int Union Pure & Appl Phys (IUPAP)
DE optical transition radiation; beam instrumentation
AB A number of particle physics experiments are being proposed as part of the Department of Energy HEP Intensity Frontier. Many of these experiments will utilize megawatt level proton beams onto targets to form secondary beams of muons, kaons and neutrinos. These experiments require transverse size measurements of the incident proton beam onto target for each beam spill. Because of the high power levels, most beam intercepting profiling techniques will not work at full beam intensity. The possibility of utilizing optical transition radiation (OTR) for high intensity proton beam profiling is discussed. In addition, previous measurements of OTR beam profiles from the NuMI beamline are presented.
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Scarpine, VE (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
NR 9
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 37
BP 2123
EP 2128
DI 10.1016/j.phpro.2012.03.764
PG 6
WC Physics, Applied; Physics, Particles & Fields
SC Physics
GA BDA98
UT WOS:000312408100270
ER
PT J
AU Bell, JR
Luo, HM
Dai, S
AF Bell, Jason R.
Luo, Huimin
Dai, Sheng
TI Solvent Extraction Separation of La3+ and Ba2+ Using Imidazolium Ionic
Liquids and TODGA Extractant
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE ionic liquids; la(3+)/ba(2+); solvent extraction; TODGA
ID METAL-IONS; CROWN-ETHERS; AQUEOUS-SOLUTIONS; LANTHANIDES; ACTINIDES;
GREENNESS; MECHANISM; SYSTEM; SR2+; CS+
AB Solvent extraction of La3+ and Ba2+ by N, N, N',N'-tetra(n-octyl)diglycolamide (TODGA) from aqueous solutions in twelve imidazolium- based ionic liquids (ILs), 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide/bis(perfluoroethylsulfonyl)imide ([C(n)mim][NTf2]/[BETI], n = 2,3,4,6,8,10) were investigated. The corresponding extraction efficiencies were found to be dependent on concentration of TODGA used, the acidity of aqueous phase, alkyl chain length on IL cation, and IL anion as well.
C1 [Bell, Jason R.; Luo, Huimin] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA.
[Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Luo, HM (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA.
EM luoh@ornl.gov
RI Dai, Sheng/K-8411-2015
OI Dai, Sheng/0000-0002-8046-3931
FU U.S. Department of Energy, the Office of Nuclear Physics; Office of
Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and
Biosciences [DE-AC05-0096OR22725]; Oak Ridge National Laboratory; Oak
Ridge Associated Universities (ORAU)
FX JRB and HML were supported by the U.S. Department of Energy, the Office
of Nuclear Physics. SD was supported by the Office of Basic Energy
Sciences, Division of Chemical Sciences, Geosciences, and Biosciences
under Contract DE-AC05-0096OR22725 with Oak Ridge National Laboratory,
managed by UT-Battelle, LLC. JRB acknowledges the Oak Ridge Associated
Universities (ORAU) for postdoctoral fellowship.
NR 37
TC 4
Z9 4
U1 1
U2 28
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2002
EP 2006
DI 10.1080/01496395.2012.697530
PG 5
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200003
ER
PT J
AU Ellis, RJ
D'Amico, L
Chiarizia, R
Antonio, MR
AF Ellis, Ross J.
D'Amico, Laura
Chiarizia, Renato
Antonio, Mark R.
TI Solvent Extraction of Cerium(III) Using an Aliphatic Malonamide: The
Role of Acid in Organic Phase Behaviors
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE aggregation; DIAMEX; distribution isotherm; liquid-liquid extraction;
rare earth elements; reverse micelles; third phase
ID N-DODECANE SYSTEM; BUTYL PHOSPHATE; AGGREGATION; OCTANE; WATER; TBP;
CONSEQUENCES; DILUENT; SPHERES; MODEL
AB The extraction of Ce(NO3)(3) with N,N'-dimethyl N,N'-dibutyl tetradecylmalonamide (DMDBTDMA) in n-dodecane (0.5M) from acidic (3M HNO3) and neutral (3M LiNO3) media was studied by varying the aqueous cerium concentration up to and beyond the point of third phase formation (defined by the Limiting Organic Concentration or LOC). The acidic system showed better Ce(III) extraction (i.e., a higher distribution ratio, D-Ce), increased water extraction, and also a lower LOC than the neutral system. These observations are consistent with the micellar model, suggesting that acid pre-organizes the organic phase into hydrated reverse micelles that favor Ce(NO3)(3) extraction while increasing the attractive potential between aggregates so that third phase formation happens more readily. The findings in this study underline the importance of aggregation in solvent extraction systems and provide the basis for a wider structural study on the effects of acid on the supramolecular structure of the organic phase.
C1 [Ellis, Ross J.; D'Amico, Laura; Chiarizia, Renato; Antonio, Mark R.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Ellis, RJ (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM rellis@anl.gov
RI ellis, ross/J-1981-2016
OI ellis, ross/0000-0001-7691-5205
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, Division of Chemical Sciences, Biosciences and Geosciences
[DE-AC02-06CH11357]
FX We thank Drs. Laurence Berthon and Manuel Miguirditchian from the CEA
(Commissariat a l'energie atomique) who generously provided the
DMDBTDMA. This work is supported by the U.S. Department of Energy,
Office of Science, Office of Basic Energy Sciences, Division of Chemical
Sciences, Biosciences and Geosciences, under contract No
DE-AC02-06CH11357.
NR 21
TC 9
Z9 9
U1 5
U2 29
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2007
EP 2014
DI 10.1080/01496395.2012.697506
PG 8
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200004
ER
PT J
AU Fondeur, FF
Rudisill, TS
AF Fondeur, Fernando F.
Rudisill, Tracy S.
TI Thermal Stability of Formohydroxamic Acid
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE formohydroxamic acid; thermal stability; UREX process
ID HYDROXAMIC ACIDS; REDUCTION; IONS
AB The thermal stability of formohydroxamic acid (FHA) was evaluated to address the potential for exothermic decomposition during storage and its use in the uranium extraction process. Accelerating rate calorimetry showed rapid decomposition at a temperature above 65 degrees C; although, the rate of pressure rise was greater than two orders of magnitude less than the lower bound for materials which have no explosive properties with respect to transportation. An FHA solution in nitric acid did not reach runaway conditions until 150 degrees C. Water appeared to temper the FHA decomposition. Analysis by differential scanning calorimetry showed that FHA melted at 67 degrees C and thermally decomposed at 90 degrees C with an enthalpy of -1924 J/g. The energics of the FHA thermal decomposition are comparable to those measured for aqueous solutions of hydroxylamine nitrate. Solid FHA should be stored in a location where the temperature does not exceed 20-25 degrees C. As a best practice, the solid material should be stored in a climate-controlled environment such as a refrigerator or freezer. FHA solutions in water are not susceptible to degradation by acid hydrolysis and are the preferred way to handle FHA prior to use.
C1 [Fondeur, Fernando F.; Rudisill, Tracy S.] Savannah River Natl Lab, Aiken, SC 29868 USA.
RP Rudisill, TS (reprint author), Savannah River Natl Lab, Aiken, SC 29868 USA.
EM tracy.rudisill@srnl.doe.gov
FU US Department of Energy's Office of Nuclear Energy [DE-PS07-08ID14906];
Savannah River Nuclear Solutions [DE-AC09-08SR22470]
FX The work was supported by Funding Opportunity Announcement (FOA) number
DE-PS07-08ID14906 sponsored by the US Department of Energy's Office of
Nuclear Energy. The Savannah River National Laboratory is operated by
Savannah River Nuclear Solutions under contract number
DE-AC09-08SR22470.
NR 15
TC 3
Z9 3
U1 0
U2 3
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2038
EP 2043
DI 10.1080/01496395.2012.697520
PG 6
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200008
ER
PT J
AU Herrmann, SD
Li, SX
Westphal, BR
AF Herrmann, Steven D.
Li, Shelly X.
Westphal, Brian R.
TI Separation and Recovery of Uranium and Group Actinide Products From
Irradiated Fast Reactor MOX Fuel via Electrolytic Reduction and
Electrorefining
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE actinide recovery; electrolytic reduction; electrorefining; fast reactor
mox fuel; LiCl-KCl-UCl3; LiCl-Li2O
ID LIQUID CADMIUM CATHODE; ELECTROCHEMICAL REDUCTION; METAL; OXIDES; SALT
AB A series of bench-scale tests was conducted with irradiated fast reactor MOX fuel to separate and recover refined uranium and group actinide products via electrolytic reduction and electrorefining. The fuel was declad, crushed, immersed in a pool of molten LiCl - 1 wt% Li2O at 650 degrees C, and electrolyzed to convert the mixed oxide fuel to metal. The reduced fuel was then electrorefined in LiCl-KCl-UCl3 at 500 degrees C, yielding a refined uranium metal product. Additional electrorefining experiments were performed in which actinides (that is, uranium, neptunium, plutonium, and americium) were recovered as a group metal product.
C1 [Herrmann, Steven D.; Li, Shelly X.; Westphal, Brian R.] Idaho Natl Lab, Pyroproc Technol Dept, Idaho Falls, ID 83415 USA.
RP Herrmann, SD (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM steven.herrmann@inl.gov
FU U.S. Department of Energy (DOE), Office of Nuclear Energy, under DOE
Idaho Operations Office [DE-AC07-05ID14517]
FX The authors acknowledge the contribution of HFEF operators and
analytical laboratory personnel to this testing program. This work was
supported by the U.S. Department of Energy (DOE), Office of Nuclear
Energy, under DOE Idaho Operations Office contract DE-AC07-05ID14517.
NR 14
TC 5
Z9 6
U1 3
U2 33
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2044
EP 2059
DI 10.1080/01496395.2012.697511
PG 16
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200009
ER
PT J
AU Westphal, BR
Price, JC
Foulkrod, L
Rodriquez, M
Cummings, D
Giglio, J
AF Westphal, Brian R.
Price, J. C.
Foulkrod, Larry
Rodriquez, Michael
Cummings, Daniel
Giglio, Jeffrey
TI Separation Characteristics of Manganese as a Surrogate for Americium
during the Distillation Operations of Pyroprocessing
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE electrometallurgical treatment; pyroprocesssing; vacuum distillation
ID SPENT NUCLEAR-FUEL; CADMIUM; SYSTEM; MN; NP; PU
AB The loss of americium metal during the pyroprocessing of used nuclear fuel has long been a concern due to its high vapor pressure relative to the operating conditions of the process. Of the two high temperature vacuum operations (distillation and casting) performed during pyroprocessing, the distillation operation would incur significantly more americium losses by several orders of magnitude. The distillation operation is required for the removal of cadmium from the transuranic products. Thus, a series of tests were initiated to investigate the evaporative characteristics of manganese as a surrogate for americium during distillation operations. The results for the separation of manganese are presented from the test program and compared against modeled data. Based on the modeling of manganese, similar data were calculated for americium evaporation during a typical liquid cathode operation in the cathode processor. It is anticipated that less than 0.15 wt.% of the americium will be lost during the distillation operation of liquid cathodes during the pyroprocessing of used nuclear fuel.
C1 [Westphal, Brian R.; Price, J. C.; Foulkrod, Larry; Rodriquez, Michael; Cummings, Daniel; Giglio, Jeffrey] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Westphal, BR (reprint author), Idaho Natl Lab, POB 1625, Idaho Falls, ID 83415 USA.
EM brian.westphal@inl.gov
OI Giglio, Jeffrey/0000-0002-0877-927X
FU U.S. Department of Energy, Office of Nuclear Energy, Science, and
Technology under DOE-NE Idaho Operations Office [DE-AC07-05ID14517]
FX The authors would like to acknowledge the Fuel Conditioning Facility
operations personnel for their contributions and the Analytical
Laboratory organization for chemical services. Work supported by the
U.S. Department of Energy, Office of Nuclear Energy, Science, and
Technology, under DOE-NE Idaho Operations Office Contract
DE-AC07-05ID14517.
NR 19
TC 0
Z9 0
U1 1
U2 7
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2060
EP 2064
DI 10.1080/01496395.2012.697516
PG 5
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200010
ER
PT J
AU Pierce, R
Caldwell, T
Pak, D
AF Pierce, R.
Caldwell, T.
Pak, D.
TI Application of Vacuum Salt Distillation Technology for the Removal of
Fluoride and Chloride from Legacy Fissile Materials
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE calcium fluoride; plutonium fluoride; plutonium oxide; vacuum
distillation
AB Between September 2009 and January 2011, the Savannah River National Laboratory (SRNL) and the Savannah River Site (SRS) HB-Line Facility designed, developed, tested, and successfully deployed a production-scale system for the distillation of sodium chloride (NaCl) and potassium chloride (KCl) from plutonium oxide (PuO2) scrap. Subsequent efforts adapted the vacuum salt distillation (VSD) technology for the removal of chloride and fluoride from less-volatile halide salts at the same process temperature and vacuum. Calcium chloride (CaCl2), calcium fluoride (CaF2), and plutonium trifluoride (PuF3) were of particular concern. To enable the use of the same operating conditions for the distillation process, SRNL employed in situ exchange reactions with alkali metal hydroxides (e. g., potassium hydroxide) to convert the less-volatile halide salts to volatile compounds that facilitated the distillation of halide without removal of plutonium. SRNL demonstrated the removal of halide from CaCl2, CaF2, and PuF3 below 1000 degrees C using VSD technology.
C1 [Pierce, R.; Pak, D.] Savannah River Natl Lab, Aiken, SC USA.
[Caldwell, T.] Atom Weap Estab, Fissile Mat Technol Div, Reading, Berks, England.
RP Pierce, R (reprint author), Savannah River Natl Lab, Aiken, SC USA.
EM robert.pierce@srnl.doe.gov
NR 7
TC 0
Z9 0
U1 2
U2 9
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2065
EP 2073
DI 10.1080/01496395.2012.697508
PG 9
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200011
ER
PT J
AU Duncan, NC
Roach, BD
Williams, NJ
Bonnesen, PV
Rajbanshi, A
Moyer, BA
AF Duncan, Nathan C.
Roach, Benjamin D.
Williams, Neil J.
Bonnesen, Peter V.
Rajbanshi, Arbin
Moyer, Bruce A.
TI N,N '-Dicyclohexyl-N ''-Isotridecylguanidine as Suppressor for the Next
Generation Caustic Side Solvent Extraction (NG-CSSX) Process
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE guanidine; nuclear waste; solvent extraction
ID HIGH-LEVEL WASTE; CESIUM REMOVAL; TANK WASTE
AB The purity, concentration, and source of theN,N'-dicyclohexyl-N ''-isotridecylguanidine (DCiTG) suppressor (guanidine) used in the NG-CSSX process were found to influence solvent performance. As the starting isotridecanol used in the preparation of DCiTG is comprised of a mixture of branched-chain aliphatic alcohols, varying in composition with manufacturer, the resulting DCiTG itself is a mixture. Thus, it is necessary to address how the solvent performance will be affected by the different preparations of the DCiTG solvent component. In this study, four preparations of DCiTG from three sources were analyzed and evaluated for purity and performance, both in the absence and presence of a deliberately added anionic surfactant impurity.
C1 [Duncan, Nathan C.; Roach, Benjamin D.; Williams, Neil J.; Bonnesen, Peter V.; Rajbanshi, Arbin; Moyer, Bruce A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Moyer, BA (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM Moyerba@ornl.gov
RI Bonnesen, Peter/A-1889-2016; Moyer, Bruce/L-2744-2016
OI Bonnesen, Peter/0000-0002-1397-8281; Moyer, Bruce/0000-0001-7484-6277
FU Office of Technology Innovation and Development, Office of Environmental
Management, U.S. Department of Energy
FX This research was sponsored by the Office of Technology Innovation and
Development, Office of Environmental Management, U.S. Department of
Energy. The complimentary sample of LIX 79 active ingredient supplied by
Cognis and the complimentary samples of DCiTG from Marshallton are
gratefully acknowledged. The authors are grateful to F.V. Sloop, Jr. for
review of this paper and for helpful suggestions.
NR 29
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Z9 7
U1 0
U2 5
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2074
EP 2087
DI 10.1080/01496395.2012.697517
PG 14
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200012
ER
PT J
AU Pierce, R
Peters, T
Caldwell, T
Crowder, M
Fink, S
AF Pierce, R.
Peters, T.
Caldwell, T.
Crowder, M.
Fink, S.
TI Performance Testing of the Next-Generation CSSX Solvent with Actual SRS
Tank Waste
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE centrifugal contactor; cesium; high level waste; solvent extraction
ID EXTRACTION
AB Efforts are underway to qualify the Next-Generation Solvent for the Caustic Side Solvent Extraction (CSSX) process. Researchers at multiple national laboratories have been involved in this effort. As part of the effort to qualify the solvent extraction system at the Savannah River Site (SRS), Savannah River National Laboratory (SRNL) researchers performed a number of tests at various scales. A series of batch equilibrium, or Extraction-Scrub-Strip (ESS), tests were conducted first. These tests used similar to 30 mL of Next-Generation Solvent and either actual SRS tank waste, or waste simulant solutions. The results from these cesium mass transfer tests were used to predict solvent behavior under a number of conditions. For larger-scale testing, twelve stages of 2-cm (diameter) centrifugal contactors were assembled. This rack of contactors is structurally similar to one tested in 2001 during the demonstration of the baseline CSSX process. No issues were encountered during assembly and mechanical testing. A non-radiological test was performed using 35 L of cesium-spiked caustic waste simulant followed by a test with 39 L of actual tank waste. Test results are discussed, particularly those related to the effectiveness of extraction.
C1 [Pierce, R.; Peters, T.; Crowder, M.; Fink, S.] Savannah River Natl Lab, Aiken, SC USA.
[Caldwell, T.] Atom Weap Estab, Fissile Mat Technol Div, Reading, Berks, England.
RP Pierce, R (reprint author), Savannah River Natl Lab, Aiken, SC USA.
EM robert.pierce@srnl.doe.gov
NR 6
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Z9 3
U1 0
U2 7
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2088
EP 2097
DI 10.1080/01496395.2012.697518
PG 10
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200013
ER
PT J
AU Schonewill, PP
Daniel, RC
Russell, RL
Shimskey, RW
Burns, CA
Billing, JM
Rapko, BM
Peterson, RA
AF Schonewill, Philip P.
Daniel, Richard C.
Russell, Renee L.
Shimskey, Rick W.
Burns, Carolyn A.
Billing, Justin M.
Rapko, Brian M.
Peterson, Reid A.
TI Development of an S-Saltcake Simulant Using Crossflow Filtration as a
Validation Technique
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE crossflow filtration; nuclear waste treatment; simulant development
ID MICROFILTRATION; REVERSIBILITY; SLUDGE
AB In the past several years, cross-flow filtration has been studied extensively in a bench-scale system at Pacific Northwest National Laboratory (PNNL) using both actual tank waste from the Hanford site and waste simulants. One challenge when creating a waste simulant is duplicating the filtration behavior of real waste, in particular when the waste composition is not known with certainty. Using a systematic approach to filtration testing, it has been found that the solid components that dominate the filtration behavior can be identified. This approach was used to develop a waste simulant for S-Saltcake tank waste. The analysis of filtration data assists in screening solid components when the chemical composition and structure of a metal is not known. This is well-illustrated in this study during the search for the appropriate chromium phase. After the likely components were identified, the solids were combined with a supernate that is representative of the real waste and the filtration performance was verified against real waste data. A secondary benefit of this approach is the construction of a database of filtration performance for various solid species that can be used to quickly develop waste simulants in the future.
C1 [Schonewill, Philip P.; Daniel, Richard C.; Russell, Renee L.; Shimskey, Rick W.; Burns, Carolyn A.; Billing, Justin M.; Rapko, Brian M.; Peterson, Reid A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Schonewill, PP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM philip.schonewill@pnnl.gov
RI Schonewill, Philip/E-6735-2010;
OI Schonewill, Philip/0000-0002-0838-3734; Peterson,
Reid/0000-0003-3368-1896
FU U.S. Department of Energy [DE-AC05-76RL01830]; U.S. Department of Energy
through the Office of Environmental Management
FX The authors gratefully acknowledge the contributions of PNNL staff
members Amanda Johnson, Andrew Casella, Matthew Edwards, Don Rinehart,
and Bill Buchmiller who assisted with the simulant preparation and
testing. The work described in this article was performed by Pacific
Northwest National Laboratory, which is operated by Battelle for the
U.S. Department of Energy under Contract DE-AC05-76RL01830. This work
was funded by the U.S. Department of Energy through the Office of
Environmental Management.
NR 25
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Z9 3
U1 0
U2 11
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2098
EP 2107
DI 10.1080/01496395.2012.697525
PG 10
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200014
ER
PT J
AU Poirier, MR
Herman, DT
Bhave, R
AF Poirier, M. R.
Herman, D. T.
Bhave, R.
TI Evaluation of Alternative Filter Media for the Rotary Microfilter
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE composite membranes; filter media; filtration; radioactive liquid waste;
rotary microfilter; solid-liquid separation
AB The Savannah River Site is currently developing and testing several processes to treat high level radioactive liquid waste. Each of these processes has a solid-liquid separation process that limits its throughput. Savannah River National Laboratory researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The authors believe the rotary microfilter throughput can be improved by using a better filter membrane. Previous testing showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. Savannah River National Laboratory and Oak Ridge National Laboratory are working together to develop asymmetric ceramic-stainless steel composite filters and asymmetric 100% stainless steel filters to improve the throughput of the rotary microfilter.
C1 [Poirier, M. R.; Herman, D. T.] Savannah River Natl Lab, Environm Program, Aiken, SC USA.
[Poirier, M. R.; Herman, D. T.] Savannah River Natl Lab, Chem Proc Technol Res Program, Aiken, SC USA.
[Bhave, R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA.
RP Poirier, MR (reprint author), Savannah River Natl Lab, Environm Program, 77-42A, Aiken, SC USA.
EM michael.poirier@srnl.doe.gov
FU U.S. DOE Office of Environmental Management [EM-31]
FX The authors wish to thank the U.S. DOE Office of Environmental
Management (EM-31) for funding this work. They would also like to thank
Henry Bolton for performing the bench-scale filter tests and Dale Adcock
and Larry Powell for membrane fabrication and characterization.
NR 8
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Z9 0
U1 1
U2 6
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2108
EP 2114
DI 10.1080/01496395.2012.703281
PG 7
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200015
ER
PT J
AU Edwards, MK
Schonewill, PP
Shimskey, RW
Niver, CM
Peterson, RA
AF Edwards, M. K.
Schonewill, P. P.
Shimskey, R. W.
Niver, C. M.
Peterson, R. A.
TI Process Results for the Integrated Near-Tank Treatment System Pilot
Demonstration
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE boehmite; continuous sludge leaching; cross-flow filtration; high-level
waste; ion exchange; near tank cesium removal; waste treatment plant
AB The Near-Tank Treatment System (NTTS) is a supplementary waste treatment technology for Hanford tank waste being investigated as part of the Department of Energy Office of Environmental Management's Advanced Remediation Technologies (ART) Program to reduce the number of high-level waste (HLW) canisters that must be processed by the Hanford Tank Waste Treatment and Immobilization Plant (WTP). The NTTS combines four basic unit operations into one integrated processing plant: caustic leaching, cross-flow filtration, ion exchange, and electrochemical recovery of sodium. Each unit operation has been studied and tested at the bench scale and was combined into a pilot-scale unit for further development.
The performance of the Continuous Sludge Leaching (CSL), Near Tank Cesium Removal (NTCR), and NTTS was evaluated by examining the process and analytical data. Overall, the NTTS integrated CSL and NTCR achieved an operational steady state that performed the waste treatment operations for which it was intended. The integrated system was stable and well-controlled, requiring very little manual intervention, and resulted in a product stream which is suitable for downstream sodium recycle, immobilization, and disposal.
C1 [Edwards, M. K.; Schonewill, P. P.; Shimskey, R. W.; Niver, C. M.; Peterson, R. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Edwards, MK (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd,POB 999, Richland, WA 99352 USA.
EM matthew.edwards@pnl.gov
RI Schonewill, Philip/E-6735-2010;
OI Schonewill, Philip/0000-0002-0838-3734; Peterson,
Reid/0000-0003-3368-1896
NR 7
TC 0
Z9 0
U1 0
U2 4
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2115
EP 2120
DI 10.1080/01496395.2012.697528
PG 6
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200016
ER
PT J
AU Schonewill, PP
Edwards, MK
Shimskey, RW
Peterson, RA
AF Schonewill, Philip P.
Edwards, Matt K.
Shimskey, Rick W.
Peterson, Reid A.
TI Generating an Estimate of the Capacity of the Near-Tank Treatment System
for Processing S/SX Tank Waste
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE caustic leaching; nuclear waste treatment; numerical modeling
ID DISSOLUTION; BOEHMITE; GIBBSITE; RATES
AB In order to reduce the number of high level waste canisters that will have to be produced by the Hanford Tank Waste Treatment and Immobilization Plant, supplemental waste treatment technologies are being investigated. One such technology is the Near-Tank Treatment System (NTTS), which uses continuous sludge leaching, filtration, and ion exchange to process the waste in a simple, compact system. The NTTS is ideally suited for handling Hanford tanks with large amounts of boehmite, a difficult aluminum phase to dissolve. Processing of boehmite by caustic leaching is the throughput limiter in the NTTS. A model was developed to estimate the capacity of the NTTS based on boehmite kinetics and the contents of the waste tanks considered for processing. Using this model, the lifecycle of the NTTS is estimated to be 11 years. Examples of optimizing NTTS performance are presented using the model. Model results are also compared with recently conducted pilot-scale tests.
C1 [Schonewill, Philip P.; Edwards, Matt K.; Shimskey, Rick W.; Peterson, Reid A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Schonewill, PP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM philip.schonewill@pnnl.gov
RI Schonewill, Philip/E-6735-2010;
OI Schonewill, Philip/0000-0002-0838-3734; Peterson,
Reid/0000-0003-3368-1896
FU U.S. Department of Energy [DE-AC05-76RL01830]; U.S. Department of Energy
through the Office of Environmental Management
FX The authors gratefully acknowledge the contributions of PNNL staff
members David Blanchard, Matthew Fountain, Samuel Bryan, and Cynthia
Niver who have been involved with bench-scale testing and development of
the NTTS system. Special thanks is also due to Parsons Infrastructure
and Technology Group, Inc. and staff members Collin Smith, Rhett
Tranbarger, Doug Dunlap, and Tom Frater who performed the pilot scale
testing as described in Schonewill et al. (9). The work described in
this article was performed by Pacific Northwest National Laboratory,
which is operated by Battelle for the U.S. Department of Energy under
Contract DE-AC05-76RL01830. This work was funded by the U.S. Department
of Energy through the Office of Environmental Management.
NR 16
TC 0
Z9 0
U1 0
U2 5
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2121
EP 2128
DI 10.1080/01496395.2012.697526
PG 8
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200017
ER
PT J
AU Russell, RL
Rinehart, DE
Brown, GN
Peterson, RA
AF Russell, R. L.
Rinehart, D. E.
Brown, G. N.
Peterson, R. A.
TI Cesium Ion Exchange Loading Kinetics Testing with SRF Resin
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE Cs; ion exchange; kinetics; SRF resin
ID REMOVAL; WASTE
AB Ion exchange using the Spherical Resorcinol-Formaldehyde (SRF) resin has been selected by the U. S. Department of Energy's Office of River Protection for use in the Pretreatment Facility of the Hanford Tank Waste Treatment and Immobilization Plant (WTP) and for potential application in an at-tank deployment for removing Cs-137. Recent proposed changes to the WTP ion exchange process baseline indicate that loading may include a broader range of sodium molarities (2 to 8 (M) under bar) due to caustic leaching and higher temperatures (50 degrees C) to alleviate post-filtration precipitation issues prior to reaching the ion exchange columns. Therefore, it is important to understand the behavior of SRF resin performance under the conditions expected with the new equipment and process changes.
This research examined the impact of linear load velocity (4, 6, 8 cm/min), initial sodium concentration (2, 5, 8 (M) under bar), initial sodium-to-cesium ratio (1.4E+05, 2.1E+05, 2.8E+05 mol/mol), initial sodium-to-hydroxide ratio (2.0, 3.0, 4.0 mol/mol), and resin degradation during extended solution flow using elevated temperature (45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 75 degrees C). Testing was performed using a similar to 2 mL column packed with SRF resin with feed flowing through it in an up-flow pattern. Samples were taken at set intervals and the data analyzed to help understand the impact of these conditions on the SRF resin performance.
It was found that the loading kinetics were not significantly impacted by the sodium concentration over the range tested. However, the loading kinetics were impacted by the linear load velocity. These results indicated that at the test temperature, the adsorption of cesium is strongly dependent on mass transfer through the film and not significantly impacted by interparticle diffusion. Testing for extended times at elevated temperatures showed that the resin does degrade and loading capacity is reduced at and above 45 degrees C. Above 60 degrees C the resin appears to not load at all.
C1 [Russell, R. L.; Rinehart, D. E.; Brown, G. N.; Peterson, R. A.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Russell, RL (reprint author), Pacific NW Natl Lab, POB 999,MSIN K6-24, Richland, WA 99352 USA.
EM renee.russell@pnnl.gov
OI Peterson, Reid/0000-0003-3368-1896
NR 22
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Z9 0
U1 1
U2 13
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2129
EP 2135
DI 10.1080/01496395.2012.697519
PG 7
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200018
ER
PT J
AU Adu-Wusu, K
Nash, CA
Pennebaker, FM
AF Adu-Wusu, K.
Nash, C. A.
Pennebaker, F. M.
TI Evaluation of Potential Eluants for Non-Acid Elution of Cesium from
Spherical Resorcinol-Formaldehyde Resin
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE cesium; ion exchange; non-acid elution; spherical
resorcinol-formaldehyde resin
ID ION-EXCHANGE; WASTE
AB Ion exchange column loading and elution of cesium from spherical resorcinol-formaldehyde resin have been conducted for two potential non-acid eluants - (NH4)(2)CO3 and CH3COONH4. The results revealed encouraging cesium elution performance. Virtually complete cesium elution was achieved with 28 or less bed volumes. Elution performance was fairly high at similar to 8 bed volumes for some of the eluants and also practically comparable to the benchmark acid eluant (HNO3). Elution is generally enhanced by increasing the concentration and pH of the eluants, and combining the eluants.
C1 [Adu-Wusu, K.; Nash, C. A.; Pennebaker, F. M.] Savannah River Natl Lab, Aiken, SC USA.
RP Adu-Wusu, K (reprint author), Savannah River Natl Lab, Aiken, SC USA.
EM kofi.adu-wusu@srnl.doe.gov
FU United States Department of Energy Office of Environmental Management
FX This work was funded by the United States Department of Energy Office of
Environmental Management.
NR 27
TC 0
Z9 0
U1 0
U2 1
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2136
EP 2144
DI 10.1080/01496395.2012.697514
PG 9
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200019
ER
PT J
AU Rajbanshi, A
Moyer, BA
Custelcean, R
AF Rajbanshi, Arbin
Moyer, Bruce A.
Custelcean, Radu
TI Sulfate Separation from Hanford Waste Simulants by Selective
Crystallization of Urea-Functionalized Capsules
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE anion separation; crystallization; nuclear waste; self-assembly; sulfate
ID METAL-ORGANIC FRAMEWORKS; ANION-BINDING; REMOVAL; WATER; ION;
COORDINATION; RECOGNITION; EFFLUENTS; EXCHANGE; CAVITIES
AB Crystallization of urea-functionalized capsules self-assembled from a tripodal anion receptor (L1) was evaluated as a means to selectively separate sulfate from aqueous alkaline solutions simulating Hanford waste compositions. The crystallizing solids consist of anionic SO4(L1)(2)(2-) capsules, and Mg(H2O)(6)(2+) or Na-2(H2O)(4)(2+) hydrated cations, alternating in three-dimensional frameworks with NaCl-type topology. While both frameworks encapsulate sulfate selectively upon crystallization through the formation of complementary hydrogen bonds from the urea groups, the separation efficacy depends strongly on the nature of the cation, the pH, and the nature and concentration of competing anions in the solution. Crystallization of the Mg-based capsules provides an efficient sulfate separation from mildly alkaline solutions (pH<9.5), with more basic conditions leading instead toMg(OH)(2) and L1 precipitation. On the other hand, crystallization of the Na-based capsules proved efficient from highly alkaline solutions (pH = 14) with compositions similar to those found in the Hanford wastes.
C1 [Rajbanshi, Arbin; Moyer, Bruce A.; Custelcean, Radu] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Custelcean, R (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM custelceanr@ornl.gov
RI Custelcean, Radu/C-1037-2009; Moyer, Bruce/L-2744-2016
OI Custelcean, Radu/0000-0002-0727-7972; Moyer, Bruce/0000-0001-7484-6277
FU Office of Technology Innovation and Development, Office of Environmental
Management, U.S. Department of Energy
FX This research was sponsored by the Office of Technology Innovation and
Development, Office of Environmental Management, U.S. Department of
Energy.
NR 39
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U1 0
U2 13
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2145
EP 2150
DI 10.1080/01496395.2012.697512
PG 6
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200020
ER
PT J
AU Fondeur, FF
White, TL
Oji, LN
Martino, CJ
Wilmarth, WR
AF Fondeur, F. F.
White, T. L.
Oji, L. N.
Martino, C. J.
Wilmarth, W. R.
TI Analysis of the Leaching Efficiency of Inhibited Water and Tank Simulant
in Removing Residues on Thermowell Pipes
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE shrinking model; tetraphenylborate
AB A cleaning protocol was determined and modeled, using the shrinking core model, for the removal of a solid residue coating thermo well pipes contained in the riser of a Savannah River Site (SRS) waste tank (Tank 48H). The solid residues on two sets of thermo well pipe samples removed from the D2 riser in SRS Tank 48H were characterized by high performance liquid chromatography (HPLC), ion chromatography (IC) and gamma spectroscopy. The residue thickness was determined using the ASTM standard D 3483-05 and was found to be three orders of magnitudes below the 1 mm thickness estimated from an earlier video of the tank cooling coil inspection. The actual estimated thickness ranged from 4 to 20.4 microns. The mass per unit area ranged from 0.15 to 0.82 milligrams per square centimeter. The residues appear to consist primarily of potassium tetraphenylborate (39.8 wt% KTPB) and dried salt solution (33.5 wt% total of nitrates, nitrites, and oxalate salts), although similar to 30% of the solid mass was not accounted for in the mass balance. No evidence of residue buildup was found inside the pipe, as expected. Two aqueous solutions representing waste processing streams were chosen for the cleaning trials. The residue leaching characteristics were measured by placing one pipe in inhibited water (0.01 M NaNO2 and 0.01M NaOH) and one pipe in Defense Waste Processing Facility (DWPF) Recycle simulant (primarily 0.20 M NaNO2 and 0.18 M NaOH). After soaking for less than 4 weeks, the inhibited water was 95.4% effective at removing the residue and the DWPF Recycle simulant was 93.5% effective. The surface appearance of the pipes after leaching tests appeared close to the clean shiny appearance of a new pipe. Total gamma counts of leachates averaged 48.1 dpm/mL, or an equivalent of 2.35E-11 Ci/gm Cs-137 (dry solids basis), which is much lower than the 1.4 E-03 Ci/gm expected for Tank 48 H dry slurry solids.
C1 [Fondeur, F. F.; White, T. L.; Oji, L. N.; Martino, C. J.; Wilmarth, W. R.] Savannah River Natl Lab, Aiken, SC 29841 USA.
RP Fondeur, FF (reprint author), Savannah River Natl Lab, 773A,Rd 1, Aiken, SC 29841 USA.
EM fernando.fondeur@srnl.doe.gov
NR 12
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Z9 0
U1 0
U2 5
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2151
EP 2159
DI 10.1080/01496395.2012.700677
PG 9
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200021
ER
PT J
AU Tian, GX
Zhang, P
Shen, YF
Wang, JC
Rao, LF
AF Tian, Guoxin
Zhang, Ping
Shen, Yifang
Wang, Jianchen
Rao, Linfeng
TI Bench-Scale Test for Separation of Sr2+ and Nd3+ from HLLW Using TiBOGA
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE high level waste; neodymium; separation; strontium; TiBOGA
ID EXTRACTION; TODGA; LANTHANIDES; ACTINIDES; IONS
AB A bench-scale test for the separation of strontium and trivalent lanthanides/actinides, using Nd3+ as a surrogate, from a simulated acidic high level liquid waste (HLLW) has been performed with a set of 10-mm centrifugal contactors using N,N,N'N'-tetra-isobutyl-3-oxa-glutaramide (TiBOGA) as extractant. The test shows that Sr2+ and Nd3+ can be co-extracted from the HLLW and then separated from each other by step stripping. The results indicate that 99.99% of Sr2+ and Nd3+ can be removed from the HLLW, and less than 0.01% of Nd3+ remains in Sr2+ product stream and 0.1% of Sr2+ in Nd3+ stream. In HNO3 solutions -0.2 M TiBOGA in 40% octanol/kerosene system the mass transfer stage efficiencies of HNO3 and Sr2+ have also been studied on a single-stage 10-mm centrifugal contactor.
C1 [Zhang, Ping; Shen, Yifang; Wang, Jianchen] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China.
[Tian, Guoxin; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
RP Tian, GX (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA.
EM gtian@lbl.gov
FU State High-Tech Development Plan (863 program, China) [2009AA050703];
Fuel Cycle Research and Development Program (Aqueous Separations:
Thermodynamics and Kinetics) of Office of Nuclear Energy under U.S.
Department of Energy at Lawrence Berkeley National Laboratory (LBNL)
[DE-AC02-05CH11231]
FX The experiment work was conducted at Institute of Nuclear and New Energy
and Technology (INET): Tsinghua University, Beijing, and supported by
the State High-Tech Development Plan (863 program, China): No.
2009AA050703. The preparation of this manuscript was supported by the
Fuel Cycle Research and Development Program (Aqueous Separations:
Thermodynamics and Kinetics) of Office of Nuclear Energy, under U.S.
Department of Energy Contract No. DE-AC02-05CH11231 at Lawrence Berkeley
National Laboratory (LBNL).
NR 13
TC 6
Z9 6
U1 1
U2 16
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2160
EP 2165
DI 10.1080/01496395.2012.697515
PG 6
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200022
ER
PT J
AU Klaehn, JR
Orme, CJ
Stewart, FF
Peterson, ES
AF Klaehn, John R.
Orme, Christopher J.
Stewart, Frederick F.
Peterson, Eric S.
TI Humidified Gas Stream Separations at High Temperatures Using Matrimid
5218
SO SEPARATION SCIENCE AND TECHNOLOGY
LA English
DT Article; Proceedings Paper
CT 17th Symposium on Separation Science and Technology for Energy
Applications
CY OCT 23-27, 2011
CL Gatlinburg, TN
DE gas permeation analysis; high performance polymers; high temperature;
polyimides; water vapor
ID CROSS-LINKING MODIFICATION; TRANSPORT PROPERTIES; AROMATIC POLYIMIDES;
POLYMER MEMBRANES; CARBON-DIOXIDE; PERMEATION; DIFFUSION; MODEL; CO2
AB Most industrially relevant high temperature gas separations (>= 150 degrees C) of either carbon dioxide (flue gas) or hydrogen (syn-gas) must be performed in the presence of water vapor. At ambient temperatures, water vapor can permeate easily through most polymeric membranes and can influence the permeation of other gases through interaction with the polymer, such as swelling and clustering. At higher temperatures, water vapor can be destructive to polymer membranes by changing the polymer structure that can result in diminished gas separation performance. Little data has been reported on the influence of water vapor in gas separations at >100 degrees C because most polymers are not stable at temperature. Many high performance (HP) polymers are able to endure high temperatures and aggressive chemical conditions. For example, polyimides are promising HP polymers that effectively separate permanent gases at temperatures higher than 150 degrees C under dry conditions. In this report, the analysis of selected HP polymers in humidified gas streams (2-4 vol% water) shows that they can perform modest separations at ambient temperatures. In general, it was observed that water vapor permeability is greater than other tested gases. Additionally, the permeabilities of the analyte gases were somewhat influenced by the presence of humidity and their selectivities were significantly lower, as compared to corresponding experiments performed in the absence of water. To elucidate the role of water vapor in gas transport, energy of activation of permeation (E-p) values were obtained for Matrimid 5218 from 30-200 degrees C in a humidified mixed gas stream, and it was found that the selectivities are nearly identical to dry gas streams at 150 degrees C. This data suggests that water vapor functions as a gas and only slightly decreases selectivity of the other gases at elevated temperatures. As a result, economic wet gas separations may be possible using these materials if the gas stream is kept at higher temperature (>150 degrees C), which is assisted by the inherent stability of the membranes.
C1 [Klaehn, John R.; Orme, Christopher J.; Stewart, Frederick F.; Peterson, Eric S.] Idaho Natl Lab, Idaho Falls, ID 83415 USA.
RP Klaehn, JR (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA.
EM John.Klaehn@inl.gov
RI Peterson, Eric/B-9127-2017
OI Peterson, Eric/0000-0002-2292-4939
FU Battelle Energy Alliance, LLC; Department of Energy - Energy Efficiency
and Renewable Energy - Industrial Technology Program (DOE- EERE-ITP)
[DE-AC07-05ID14517]; National Science Foundation's Internal Research and
Development (IRD) Program; Laboratory Directed Research and Development
(LDRD) Program at the Idaho National Laboratory
FX The work described in this paper was supported by Battelle Energy
Alliance, LLC and Department of Energy - Energy Efficiency and Renewable
Energy - Industrial Technology Program (DOE- EERE-ITP) through Contract
DE-AC07-05ID14517. Also, the work was supported by National Science
Foundation's Internal Research and Development (IR&D) Program and
Laboratory Directed Research and Development (LDRD) Program at the Idaho
National Laboratory.
NR 33
TC 4
Z9 5
U1 0
U2 19
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 0149-6395
EI 1520-5754
J9 SEP SCI TECHNOL
JI Sep. Sci. Technol.
PY 2012
VL 47
IS 14-15
SI SI
BP 2186
EP 2191
DI 10.1080/01496395.2012.697529
PG 6
WC Chemistry, Multidisciplinary; Engineering, Chemical
SC Chemistry; Engineering
GA 092SB
UT WOS:000315141200025
ER
PT S
AU Mentink, MGT
Dhalle, MMJ
Dietderich, DR
Godeke, A
Goldacker, W
Hellman, F
ten Kate, HHJ
Sumption, MD
Susner, MA
AF Mentink, M. G. T.
Dhalle, M. M. J.
Dietderich, D. R.
Godeke, A.
Goldacker, W.
Hellman, F.
ten Kate, H. H. J.
Sumption, M. D.
Susner, M. A.
BE Kes, PH
Rogalla, H
TI The effect of Ta and Ti additions on the strain sensitivity of bulk
Niobium-Tin`
SO SUPERCONDUCTIVITY CENTENNIAL CONFERENCE 2011
SE Physics Procedia
LA English
DT Proceedings Paper
CT Superconductivity Centennial Conference (SCC)
CY SEP 18-23, 2011
CL Hague, NETHERLANDS
DE Nb3Sn; bulk; tantalum; titanium; heat capacity; SEM-EDX; strain
sensitivity
ID MAGNETIC-FIELDS; NB3SN; SUPERCONDUCTORS; DEPENDENCE; STATE
AB The effect of tantalum and titanium additions on the composition, the superconducting properties, and their sensitivity to strain of bulk Nb3Sn is investigated. Using heat capacity analysis and Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDX), it is found that the binary Nb3Sn bulk and Nb3Sn bulk with added titanium and tantalum consist of stoichiometric Nb3Sn and niobium(-oxide). Furthermore, it is found that the niobium-to-tin ratio decreases in the presence of tantalum and increases in the presence of titanium, which suggests that tantalum is replacing niobium and titanium is replacing tin in the A15 crystal structure. Using a 10% resistivity criterion, it is observed that the critical magnetic field of unstrained binary bulk is 26.7 T, while the presence of tantalum and titanium raises the critical magnetic field to 29.3 and 30.1 T, respectively. The curves of normalized critical magnetic field as function of strain of all three samples nearly overlap, a strong indication that the variation in strain sensitivity observed in wires is not caused by the titanium and tantalum additions. Understanding the effect of additions on the composition, superconducting properties, and strain sensitivity of Nb3Sn is important for optimizing Nb3Sn conductor technology. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors.
C1 [Mentink, M. G. T.; Dietderich, D. R.; Godeke, A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Mentink, M. G. T.; Dhalle, M. M. J.; ten Kate, H. H. J.] Univ Twente, Enschede, Netherlands.
[Goldacker, W.] Karlsruhe Inst Technol, Karlsruhe, Germany.
[Hellman, F.] Univ Calif Berkeley, Berkeley, CA 94720 USA.
[Sumption, M. D.; Susner, M. A.] Ohio State Univ, Columbus, OH 43210 USA.
RP Mentink, MGT (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RI Susner, Michael/G-3275-2015; Susner, Michael/B-1666-2013; Sumption,
Mike/N-5913-2016
OI Susner, Michael/0000-0002-1211-8749; Susner,
Michael/0000-0002-1211-8749; Sumption, Mike/0000-0002-4243-8380
FU Director, Office of Science, High Energy Physics, US Department of
Energy [DE-AC02-05CH11231]
FX This work was partly supported by the Director, Office of Science, High
Energy Physics, US Department of Energy under contract no.
DE-AC02-05CH11231.
NR 18
TC 2
Z9 2
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 36
BP 491
EP 496
DI 10.1016/j.phpro.2012.06.223
PG 6
WC Physics, Particles & Fields
SC Physics
GA BDQ17
UT WOS:000314403400088
ER
PT S
AU Godeke, A
Cheng, DW
Dietderich, DR
Mentink, MGT
Prestemon, SO
Sabbi, GL
AF Godeke, A.
Cheng, D. W.
Dietderich, D. R.
Mentink, M. G. T.
Prestemon, S. O.
Sabbi, G. L.
BE Kes, PH
Rogalla, H
TI Heat treatment optimizations for Wind-and-React Bi-2212 racetrack coils
SO SUPERCONDUCTIVITY CENTENNIAL CONFERENCE 2011
SE Physics Procedia
LA English
DT Proceedings Paper
CT Superconductivity Centennial Conference (SCC)
CY SEP 18-23, 2011
CL Hague, NETHERLANDS
DE Bi-2212; Bi2Sr2CaCu2O8+delta; accelerator magnet; superconducting
magnet; heat treatment
AB Lawrence Berkeley National Laboratory (LBNL) is developing Wind-and-React (W&R) Bi2Sr2CaCu2O8+delta (Bi-2212) accelerator magnet technology for insert coils, to surpass the intrinsic limitations of Nb-based magnets, and eventually develop hybrid systems that can approach 20 T dipole fields. The Bi-2212 technology is being developed in close collaboration with industry, and has been partly supported by the US Very High Field Superconducting Magnet Collaboration (VHFSMC). Steady improvements were made over the last several years, with coil HTS-SC08 reaching 2636 A, or about 85% of its witness sample critical current (I-c). Though this is still a factor 3 to 4 too low to be competitive with Nb-based materials, it is expected that the required I-c can be achieved through further conductor optimizations. Recent developments include the commissioning of infrastructure for the reaction of coils at LBNL. Earlier coils were fabricated and tested at LBNL, but were reacted at the wire manufacturer. We describe in detail the furnace calibrations and heat treatment optimizations that enable coil reactions at temperatures approaching 890 degrees C with a homogeneity of +/- 1 degrees C in a pure oxygen flow. We reacted two new coils at LBNL, and tested the performance of coil HTS-SC10 at 4.2 K in self-field using a superconducting transformer system. We find that its performance is consistent with witness samples, and comparable to coil HTS-SC08, which is an identical coil that was reacted at Oxford Instruments Superconductor Technology (OST), thereby validating the in-house reaction process. (C) 2012 Published by Elsevier B. V. Selection and/or peer-review under responsibility of the Guest Editors.
C1 [Godeke, A.; Cheng, D. W.; Dietderich, D. R.; Mentink, M. G. T.; Prestemon, S. O.; Sabbi, G. L.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Godeke, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
NR 12
TC 2
Z9 2
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 36
BP 812
EP 817
DI 10.1016/j.phpro.2012.06.047
PG 6
WC Physics, Particles & Fields
SC Physics
GA BDQ17
UT WOS:000314403400145
ER
PT S
AU Matias, V
Hammond, RH
AF Matias, Vladimir
Hammond, Robert H.
BE Kes, PH
Rogalla, H
TI YBCO superconductor wire based on IBAD-textured templates and RCE of
YBCO: Process economics
SO SUPERCONDUCTIVITY CENTENNIAL CONFERENCE 2011
SE Physics Procedia
LA English
DT Proceedings Paper
CT Superconductivity Centennial Conference (SCC)
CY SEP 18-23, 2011
CL Hague, NETHERLANDS
DE coated conductors; YBCO wire; ion beam assisted deposition; reactive
co-evaporation; cost
ID BEAM-ASSISTED DEPOSITION; MGO
AB High-temperature superconductor wire based on the YBa2Cu3Oy compound offers unprecedented performance that stands well above any other superconductor in terms of temperature and magnetic field of operation. We discuss a cost estimate model for production of coated conductors based on ion-beam-assisted deposition (IBAD) of MgO and reactive co-evaporation (RCE) of YBCO. Our results indicate that cost of coated conductors can be below $10/kAm already at 5000 km production volume of 4-mm superconductor wire, with 500 A/cm and 2 mu m of YBCO. The total I-c/width is a key parameter for cost/performance of the coated conductor. (C) 2012 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors.
C1 [Matias, Vladimir] Los Alamos Natl Lab, Superconduct Technol Ctr, POB 1663, Los Alamos, NM 87545 USA.
[Hammond, Robert H.] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA.
RP Matias, V (reprint author), Los Alamos Natl Lab, Superconduct Technol Ctr, POB 1663, Los Alamos, NM 87545 USA.
EM vlado@earthlink.net
FU US Dept. of Energy Office of Electricity Delivery & Energy Reliability
FX VM would like to thank Gareth O'Loughlin for his development of the cost
model. We thank Chris Sheehan from Los Alamos for his assistance with
the graphics. This work was supported by the US Dept. of Energy Office
of Electricity Delivery & Energy Reliability.
NR 8
TC 8
Z9 8
U1 1
U2 10
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 36
BP 1440
EP 1444
DI 10.1016/j.phpro.2012.06.239
PG 5
WC Physics, Particles & Fields
SC Physics
GA BDQ17
UT WOS:000314403400258
ER
PT S
AU Ayers, J
Felker, B
Smalyuk, V
Izumi, N
Piston, K
Holder, J
Power, G
Allen, F
Simanovska, N
Bell, P
Bradley, D
Lamb, Z
AF Ayers, Jay
Felker, Brian
Smalyuk, Vladimir
Izumi, Nobohiko
Piston, Ken
Holder, Joe
Power, Gary
Allen, Fred
Simanovska, Natalia
Bell, Perry
Bradley, Dave
Lamb, Zachary
BE Bell, P
Grim, GP
TI Design and implementation of high magnification framing camera for NIF
"ARIANE Light"
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
AB Gated X-Ray imagers have been used on many ICF experiments around the world for time resolved imaging of the target implosions. ARIANE (Active Readout In A Neutron Environment) has been developed for use in the National Ignition Facility and has been deployed in multiple phases. Phase 1 (complete) known as ARIANE Ultra Light (Alignment proof of concept), Phase 2a known as ARIANE Light (complete) (X-ray gated detector with electronic recording), Phase 2b (complete) (X-ray gated detector with film recording) and Phase 3 known as ARIANE Heavy which is currently under development. The ARIANE diagnostic is comprised of the following subsystems: pinhole imaging system, filtering, detector head, detector head electronics, control electronics, CCD, and film recording systems. The phased approach allows incremental increases in tolerance to neutron yield. Phase 2a and 2b have been fielded successfully and captured gated implosion images on CCD and film at neutron yields up to 7 x 10(14). As the yields in the NIF increase Phase 3 will be a longer term solution incorporating an indirect optical path, hardened advanced detectors and significant (tons) of shielding. Design and Initial commissioning data for Phase 1-2b are presented here.
C1 [Ayers, Jay; Felker, Brian; Smalyuk, Vladimir; Izumi, Nobohiko; Piston, Ken; Holder, Joe; Power, Gary; Allen, Fred; Simanovska, Natalia; Bell, Perry; Bradley, Dave; Lamb, Zachary] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Ayers, J (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RI IZUMI, Nobuhiko/J-8487-2016
OI IZUMI, Nobuhiko/0000-0003-1114-597X
NR 7
TC 1
Z9 1
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050J
DI 10.1117/12.931299
PG 12
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400016
ER
PT S
AU Beeman, B
MacPhee, AG
Kimbrough, JR
Lacaille, GA
Barrios, MA
Emig, J
Hunter, JR
Miller, EK
Donaldson, WR
AF Beeman, B.
MacPhee, A. G.
Kimbrough, J. R.
Lacaille, G. A.
Barrios, M. A.
Emig, J.
Hunter, J. R.
Miller, E. K.
Donaldson, W. R.
BE Bell, P
Grim, GP
TI Mach-Zehnder Modulator performance using the Comet Laser facility and
implications for use on NIF
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
ID NATIONAL-IGNITION-FACILITY
AB We present performance characterization measurements for Mach-Zehnder optical modulators to be fielded on NIF as a signal path upgrade for various diagnostics. Two different operating configurations will be explored including in phase quadrature and 90deg I/Q operation. Impulse response functions of x-ray emissions were conducted using the COMET laser facility at the Lawrence Livermore National Laboratory. Results from these short pulse laser driven plasma experiments are given along with comparisons to other recording instrumentation
C1 [Beeman, B.; MacPhee, A. G.; Kimbrough, J. R.; Lacaille, G. A.; Barrios, M. A.; Emig, J.; Hunter, J. R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Miller, E. K.] Natl Secur Technol, Las Vegas, NV 89119 USA.
[Donaldson, W. R.] Laser Energet Lab, Rochester, NY 14623 USA.
RP Beeman, B (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
FU U. S. Department of Energy; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX This work performed under the auspices of the U. S. Department of Energy
by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344.
NR 10
TC 2
Z9 2
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850507
DI 10.1117/12.931436
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400005
ER
PT S
AU Clark, DD
Aragonez, R
Archuleta, T
Fatherley, V
Hsu, A
Jorgenson, J
Mares, D
Oertel, J
Oades, K
Kemshall, P
Thomas, P
Young, T
Pederson, N
AF Clark, David D.
Aragonez, Robert
Archuleta, Thomas
Fatherley, Valerie
Hsu, Albert
Jorgenson, Justin
Mares, Danielle
Oertel, John
Oades, Kevin
Kemshall, Paul
Thomas, Philip
Young, Trevor
Pederson, Neal
BE Bell, P
Grim, GP
TI A New Gated X-Ray Detector for the Orion Laser Facility
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Plasma Physics; Inertial Confinement Fusion; Laser; Gated X-Ray
Detector; Orion; Trident; Kentech; Micro Channel Plate; High Speed
Framing; Spectral Instruments; x-ray; MCP; FOFP; CCD; GXD; ICF; LANL;
LLNL; AWE
AB Gated X-Ray Detectors (GXD) are considered the work-horse target diagnostic of the laser based inertial confinement fusion (ICF) program. Recently, Los Alamos National Laboratory (LANL) has constructed three new GXDs for the Orion laser facility at the Atomic Weapons Establishment (AWE) in the United Kingdom. What sets these three new instruments apart from the what has previously been constructed for the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) is: improvements in detector head microwave transmission lines, solid state embedded hard drive and updated control software, and lighter air box design and other incremental mechanical improvements. In this paper we will present the latest GXD design enhancements and sample calibration data taken on the Trident laser facility at Los Alamos National Laboratory using the newly constructed instruments.
C1 [Clark, David D.; Aragonez, Robert; Archuleta, Thomas; Fatherley, Valerie; Hsu, Albert; Jorgenson, Justin; Mares, Danielle; Oertel, John] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA.
[Oades, Kevin; Kemshall, Paul; Thomas, Philip; Young, Trevor] Atomic Weapons Estab, Aldermaston, England.
[Pederson, Neal] VI Control Syst, Los Alamos, NM 87544 USA.
RP Clark, DD (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA.
EM ddclark@lanl.gov
FU LANL; Kevin Oades and Simon Daykin at (AWE); ICF; AWE Manson X-Ray
FX The Orion GXD project was complex and spanned two years. The authors
would like to thank the folowing teams and individuals for their
cintributions to the success of the Irion GXD project. The Trident laser
team led by Randy Johnson at LANL and the Orion laser team lead by Kevin
Oades and Simon Daykin at (AWE) were indispensable in brining the
instruments to life at actual ICF laser facilities. Chris Bentley and
his team at the AWE Manson X-Ray source provided unparalleled support
and service while the instruments were being checked out and prepared
for filding on Orion. Finally thanks to technical photographer Joseph
Cowan for providing the excellent tphotographs presented in this paper.
NR 4
TC 1
Z9 1
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050K
DI 10.1117/12.931440
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400017
ER
PT S
AU Di Nicola, P
Kalantar, D
Mccarville, T
Klingmann, J
Alvarez, S
Lowe-Webb, R
Lawson, J
Datte, P
Danforth, P
Schneider, M
Di Nicola, JM
Jackson, J
Orth, C
Azevedo, S
Tommasini, R
Manuel, A
Wallace, R
AF Di Nicola, P.
Kalantar, D.
Mccarville, T.
Klingmann, J.
Alvarez, S.
Lowe-Webb, R.
Lawson, J.
Datte, P.
Danforth, P.
Schneider, M.
Di Nicola, J. -M.
Jackson, J.
Orth, C.
Azevedo, S.
Tommasini, R.
Manuel, A.
Wallace, R.
BE Bell, P
Grim, GP
TI Beam and target alignment at the National Ignition Facility using the
Target Alignment Sensor (TAS)
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE NIF; Inertial Confinement Fusion; target; beam alignment; Target
Alignment Sensor
AB The requirements for beam and target alignment for successful ignition experiments on the National Ignition Facility (NIF) are stringent: the average of beams to the target must be within 25 mu m. Beam and target alignment are achieved with the Target Alignment Sensor (TAS). The TAS is a precision optical device that is inserted into target chamber center to facilitate both beam and target alignment. It incorporates two camera views (upper/lower and side) mounted on each of two stage assemblies (jaws) to view and align the target. It also incorporates a large mirror on each of the two assemblies to reflect the alignment beams onto the upper/lower cameras for beam alignment. The TAS is located in the chamber using reference features by viewing it with two external telescope views. The two jaws are adjusted in elevation to match the desired beam and target alignment locations. For some shot setups, a sequence of TAS positions is required to achieve the full setup and alignment. In this paper we describe the TAS, the characterization of the TAS coordinates for beam and target alignment, and summarize pointing shots that demonstrate the accuracy of beam-target alignment.
C1 [Di Nicola, P.; Kalantar, D.; Mccarville, T.; Klingmann, J.; Alvarez, S.; Lowe-Webb, R.; Lawson, J.; Datte, P.; Danforth, P.; Schneider, M.; Di Nicola, J. -M.; Jackson, J.; Orth, C.; Azevedo, S.; Tommasini, R.; Manuel, A.; Wallace, R.] Lawrence Livermore Natl Lab, Livermore, CA 95550 USA.
RP Di Nicola, P (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 95550 USA.
RI Tommasini, Riccardo/A-8214-2009
OI Tommasini, Riccardo/0000-0002-1070-3565
NR 4
TC 6
Z9 6
U1 0
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050B
DI 10.1117/12.930173
PG 9
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400009
ER
PT S
AU Homoelle, D
Bowers, M
Browning, D
Burns, S
Erbert, G
Golick, B
Haley, J
McCarville, T
Opachich, Y
Padilla, E
Palmer, N
Perfect, B
Pelz, L
Spinka, T
Throop, A
Wong, JN
AF Homoelle, Doug
Bowers, Mark
Browning, Don
Burns, Scott
Erbert, Gaylen
Golick, Brad
Haley, Jim
McCarville, Tom
Opachich, Yekaterina
Padilla, Ernesto
Palmer, Nathan
Perfect, Brad
Pelz, Larry
Spinka, Tom
Throop, Alan
Wong, J. Nan
BE Bell, P
Grim, GP
TI A compact UV timing fiducial system for use with x-ray streak cameras at
NIF
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE National Ignition Facility; Timing Fiducial; X-Ray Streak Camera;
Diagnostics; Fiber Laser Amplifier; Fourth-harmonic generation
AB We present the design of a compact UV (263-nm) timing fiducial system for use with x-ray streak cameras at the National Ignition Facility (NIF). The design consists of remote fiber amplification of an infrared 1053-nm (1 omega) seed, a free-space optical path that has two stages of frequency conversion from 1 omega to the fourth harmonic (4 omega), and fiber delivery of the 4 omega signal via output fiber for use with an x-ray streak camera. This is all contained within an airbox that can reside in a vacuum. The 1 omega seed and the pump light for the fiber amplifier is delivered to the airbox via optical fiber (similar to 100 meters) from a location in the NIF that is shielded from neutron radiation generated from imploding targets during system shots. When complete, the system will be able to provide timing fiducials to multiple x-ray streak cameras on the same system shot. We will present data that demonstrates end-to-end system performance.*
C1 [Homoelle, Doug; Bowers, Mark; Browning, Don; Burns, Scott; Erbert, Gaylen; Golick, Brad; Haley, Jim; McCarville, Tom; Opachich, Yekaterina; Padilla, Ernesto; Palmer, Nathan; Perfect, Brad; Pelz, Larry; Spinka, Tom; Throop, Alan; Wong, J. Nan] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Homoelle, D (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA USA.
NR 10
TC 2
Z9 2
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850504
DI 10.1117/12.928668
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400002
ER
PT S
AU Izumi, N
Emig, J
Moody, J
Middleton, C
Holder, J
Glenn, S
Pond, T
Shellman, R
Cardenas, M
Walsh, PJ
Chelli, SJ
Bradley, DK
Bell, PM
AF Izumi, N.
Emig, J.
Moody, J.
Middleton, C.
Holder, J.
Glenn, S.
Pond, T.
Shellman, R.
Cardenas, M.
Walsh, P. J.
Chelli, S. J.
Bradley, D. K.
Bell, P. M.
BE Bell, P
Grim, GP
TI Measurement of cathodeluminescence efficiency of phosphors for
micro-channel plate based x-ray framing cameras
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE MCP; x-ray framing camera; neutron background; phosphor
ID SCREENS
AB From a point of a signal-to-background ratio, phosphors are a key component of micro channel plate (MCP) based x-ray framing cameras. In an MCP based framing camera, x-ray signal is converted to electrons, gated, amplified, and converted back to optical signal on the phosphor. To operate x-ray framing cameras in a harsh neutron induced radiation background of the National Ignition Facility, cathodeluminescence efficiency of the phosphor is very important. To avoid MCP damage due to high voltage breakdown, we have been operating phosphors below 3kV (acceleration field < 6 kV/mm). The signal-to-background ratio the camera can be significantly improved by increasing the phosphor potential to 10kV. We measured conversion efficiencies of standard phosphors at electron energies of 0.5 similar to 10 keV and assessed achievable performance of them with using a numerical model.
C1 [Izumi, N.; Emig, J.; Moody, J.; Middleton, C.; Holder, J.; Glenn, S.; Bradley, D. K.; Bell, P. M.] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
[Pond, T.; Shellman, R.; Cardenas, M.] Natl Secur Technol, Livermore, CA 94551 USA.
[Walsh, P. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Chelli, S. J.] Deposit Res Lab, St Charles, MO 63301 USA.
RP Izumi, N (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
RI IZUMI, Nobuhiko/J-8487-2016
OI IZUMI, Nobuhiko/0000-0003-1114-597X
FU Lawrence Livermore National Laboratory; Lawrence Livermore National
Security, LLC; U. S. Department of Energy; National Nuclear Security
Administration [E-AC52-07NA27344]
FX Lawrence Livermore National Laboratory is operated by Lawrence Livermore
National Security, LLC, for the U. S. Department of Energy, National
Nuclear Security Administration under Contract No. DE-AC52-07NA27344.
NR 15
TC 0
Z9 0
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050I
DI 10.1117/12.930992
PG 6
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400015
ER
PT S
AU Kalantar, DH
Di Nicola, P
Shingleton, N
Burkhart, S
Dzenitis, J
Klingmann, J
Lawson, J
Lutz, J
Manha, D
Manuel, AM
Mccarville, T
Palma, E
Pigg, D
Widmann, K
Wood, R
AF Kalantar, D. H.
Di Nicola, P.
Shingleton, N.
Burkhart, S.
Dzenitis, J.
Klingmann, J.
Lawson, J.
Lutz, J.
Manha, D.
Manuel, A. M.
Mccarville, T.
Palma, E.
Pigg, D.
Widmann, K.
Wood, R.
BE Bell, P
Grim, GP
TI An overview of target and diagnostic alignment at the National Ignition
Facility
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE NIF; Inertial Confinement Fusion; target; diagnostic alignment; Target
Alignment Sensor; OPAS
AB The National Ignition Facility (NIF) is a 192-beam high energy laser designed for Inertial Confinement Fusion (ICF), and High Energy Density (HED) and basic science experiments. In order to achieve ignition with an ICF target, the beam and target alignment must be performed within very tight specifications. At the same time, in order to be able to conduct the wide range of HED and basic science experiments, the facility must be able to meet the tight tolerances for both main and offset backlighter beams and targets. To diagnose the ignition event, many different target diagnostics are employed, including optical, x-ray, and nuclear diagnostics. These target diagnostics must also be positioned accurately and reliably within very tight specifications in order to ensure good data is acquired. In this paper, we describe the strategy for beam, target, and diagnostic alignment at NIF.
C1 [Kalantar, D. H.; Di Nicola, P.; Shingleton, N.; Burkhart, S.; Dzenitis, J.; Klingmann, J.; Lawson, J.; Lutz, J.; Manha, D.; Manuel, A. M.; Mccarville, T.; Palma, E.; Pigg, D.; Widmann, K.; Wood, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Kalantar, DH (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
NR 6
TC 4
Z9 4
U1 2
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850509
DI 10.1117/12.969066
PG 8
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400007
ER
PT S
AU Khan, SF
Bell, PM
Bradley, DK
Burns, SR
Celeste, JR
Dauffy, LS
Eckart, MJ
Gerhard, MA
Hagmann, C
Headley, DI
Holder, JP
Izumi, N
Jones, MC
Kellogg, JW
Khater, HY
Kimbrough, JR
MacPhee, AG
Opachich, YP
Palmer, NE
Petre, RB
Porter, AJL
Shelton, RT
Thomas, TL
Worden, JB
AF Khan, S. F.
Bell, P. M.
Bradley, D. K.
Burns, S. R.
Celeste, J. R.
Dauffy, L. S.
Eckart, M. J.
Gerhard, M. A.
Hagmann, C.
Headley, D. I.
Holder, J. P.
Izumi, N.
Jones, M. C.
Kellogg, J. W.
Khater, H. Y.
Kimbrough, J. R.
MacPhee, A. G.
Opachich, Y. P.
Palmer, N. E.
Petre, R. B.
Porter, A. J. L.
Shelton, R. T.
Thomas, T. L.
Worden, J. B.
BE Bell, P
Grim, GP
TI Measuring x-ray burn history with the Streaked Polar Instrumentation for
Diagnosing Energetic Radiation (SPIDER) at the National Ignition
Facility (NIF)
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE National Ignition Facility (NIF); inertial confinement fusion (ICF);
streak camera; x-ray diagnostics; neutron mitigation; SPIDER; bang time;
burn width
ID CAMERAS
AB We present a new diagnostic for the National Ignition Facility (NIF) [1,2]. The Streaked Polar Instrumentation for Diagnosing Energetic Radiation (SPIDER) is an x-ray streak camera for use on almost-igniting targets, up to similar to 10(17) neutrons per shot. It measures the x-ray burn history for ignition campaigns with the following requirements: X-Ray Energy 8-30keV, Temporal Resolution 10ps, Absolute Timing Resolution 30ps, Neutron Yield: 10(14) to 10(17). The features of the design are a heavily shielded instrument enclosure outside the target chamber, remote location of the neutron and EMP sensitive components, a precise laser pulse comb fiducial timing system and fast streaking electronics. SPIDER has been characterized for sweep linearity, dynamic range, temporal and spatial resolution. Preliminary DT implosion data shows the functionality of the instrument and provides an illustration of the method of burn history extraction.
C1 [Khan, S. F.; Bell, P. M.; Bradley, D. K.; Burns, S. R.; Celeste, J. R.; Dauffy, L. S.; Eckart, M. J.; Gerhard, M. A.; Hagmann, C.; Holder, J. P.; Izumi, N.; Khater, H. Y.; Kimbrough, J. R.; MacPhee, A. G.; Opachich, Y. P.; Palmer, N. E.; Petre, R. B.; Shelton, R. T.; Thomas, T. L.; Worden, J. B.] Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
[Headley, D. I.; Jones, M. C.; Kellogg, J. W.; Porter, A. J. L.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Khan, SF (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
EM khan9@llnl.gov
RI IZUMI, Nobuhiko/J-8487-2016
OI IZUMI, Nobuhiko/0000-0003-1114-597X
FU U. S. Department of Energy; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Sandia National Laboratories [DE-AC0494AL85000]
FX This work was performed under the auspices of the U. S. Department of
Energy by Lawrence Livermore National Laboratory under contract
DE-AC52-07NA27344 and by Sandia National Laboratories under contract
DE-AC0494AL85000.
NR 14
TC 17
Z9 17
U1 0
U2 10
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850505
DI 10.1117/12.930032
PG 8
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400003
ER
PT S
AU Kimbrough, JR
Moody, JD
Bell, PM
AF Kimbrough, Joseph R.
Moody, J. D.
Bell, P. M.
BE Bell, P
Grim, GP
TI Design and testing of a megapixel CMOS charge dump and read camera
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE CMOS imager; CCD camera; radiation tolerant
AB The National Ignition Facility requires a radiation-hardened, megapixel CMOS imaging sensor-based camera to be a direct physical and operational replacement for the CCD cameras currently used in x-ray streak cameras and gated imaging detectors. The first phase is a radiation-tolerant camera for characterization of radiation effects on the imaging sensor. This will be followed by a fully hardened version. The radiation-tolerant camera, based on the 2k by 2k CMV4000 sensor from CMOSIS Inc., has been built and optical performance was measured. Camera parts were selected to operate up to 10 krad(Si) and the camera incorporates a fast charge and dump of the sensor pixels, followed by image readout. This allows the dumping of charge due to the prompt radiation noise and then readout of the longer persistence phosphor signal from the x-ray diagnostics.
C1 [Kimbrough, Joseph R.; Moody, J. D.; Bell, P. M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Kimbrough, JR (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94551 USA.
NR 7
TC 1
Z9 1
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050D
DI 10.1117/12.930545
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400011
ER
PT S
AU Kimbrough, JR
MacPhee, AG
Bell, PM
Burns, SR
Parker, JM
AF Kimbrough, Joseph R.
MacPhee, A. G.
Bell, P. M.
Burns, S. R.
Parker, J. M.
BE Bell, P
Grim, GP
TI Performance Improvements of PCDs for measuring x-ray bang time
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE PCD; polycrystalline diamond photoconductor; x-ray bang time
ID OMEGA
AB The National Ignition Facility South Pole Bang Time diagnostic uses polycrystalline diamond photoconductive detectors to measure x-ray bang time on capsule implosion shots. The original Laboratory for Laser Energetics PCD design was redesigned to eliminate ringing near the peak of the impulse response, and provide 30 picosecond resolution. The detector design, performance and x-ray laser impulse response tests used to characterize the detector are presented.
C1 [Kimbrough, Joseph R.; MacPhee, A. G.; Bell, P. M.; Burns, S. R.; Parker, J. M.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Kimbrough, JR (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94551 USA.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850506
DI 10.1117/12.930551
PG 5
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400004
ER
PT S
AU Lee, JJ
Haugh, MJ
LaCaille, G
Torres, P
AF Lee, Joshua J.
Haugh, Michael J.
LaCaille, Greg
Torres, Peter
BE Bell, P
Grim, GP
TI Calibration of X-ray detectors in the 8 to 111 keV energy range and
their application to diagnostics on the National Ignition Facility
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE HPGe calibration; x-ray sources; x-ray diagnostics; NIST certification;
FFLEX; NIF; PTB
AB The calibration of X-ray diagnostics is of paramount importance to the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL). National Security Technologies LLC (NSTec) fills this need by providing a wide variety of calibration and diagnostic development services in support of the ongoing research efforts at NIF. The X-ray source in the High Energy X-ray lab utilizes induced fluorescence in a variety of metal foils to produce a beam of characteristic X-rays ranging from 8 to 111 keV. Presented are the methods used for calibrating a High Purity Germanium detector, using NIST traceable radioactive sources, and compared against a silicon photodiode calibrated at Physikalisch Technische Bundesanstalt (PTB). A limited presentation of results from the recent calibration of the upgraded Filter Fluorescer X-ray Spectrometer is included.
C1 [Lee, Joshua J.; Haugh, Michael J.; Torres, Peter] Natl Secur Technol LLC, 161 S Vasco Rd,Suite A, Livermore, CA 94550 USA.
[LaCaille, Greg] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
RP Lee, JJ (reprint author), Natl Secur Technol LLC, 161 S Vasco Rd,Suite A, Livermore, CA 94550 USA.
FU National Security Technologies, LLC [DE-AC52-06NA25946]; U. S.
Department of Energy; The United States Government retains and the
publisher; accepting the article for publication; United States
Government retains a non- exclusive; United States Government purposes
[DOE/NV/25946--1580]
FX This manuscript has been authored by National Security Technologies,
LLC, under Contract No. DE-AC52-06NA25946 with the U. S. Department of
Energy. The United States Government retains and the publisher, by
accepting the article for publication, acknowledges that the United
States Government retains a non- exclusive, paid- up, irrevocable,
world- wide license to publish or reproduce the published form of this
manuscript, or allow others to do so, for United States Government
purposes. DOE/NV/25946--1580
NR 5
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U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 850508
DI 10.1117/12.930162
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400006
ER
PT S
AU Nagel, SR
Ayers, MJ
Felker, B
Hilsabeck, TJ
Chung, T
Smith, RF
Bell, PM
Bradley, DK
Collins, GW
Kilkenny, JD
Sammuli, B
Hares, JD
Dymoke-Bradshaw, AKL
AF Nagel, Sabrina R.
Ayers, M. J.
Felker, B.
Hilsabeck, T. J.
Chung, T.
Smith, R. F.
Bell, P. M.
Bradley, D. K.
Collins, G. W.
Kilkenny, J. D.
Sammuli, B.
Hares, J. D.
Dymoke-Bradshaw, A. K. L.
BE Bell, P
Grim, GP
TI Performance measurements of the DIXI (dilation x-ray imager)
photocathode using a laser produced x-ray source
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE gated; x-ray; imager; time dilation
AB DIXI (dilation x-ray imager) will be used to characterize ICF (inertial confinement fusion) implosions on the NIF. DIXI utilizes pulse-dilation technology(1) to achieve x-ray imaging with temporal gate times below 10 ps. Time resolved x-ray measurements were conducted using the COMET laser facility at the Lawrence Livermore National Laboratory. Here we focus on some of the challenges faced by the large aperture photo cathode of the instrument and report on how to maintain a at photo cathode as well as how the required spatial resolution of the instrument is achieved.
C1 [Nagel, Sabrina R.; Ayers, M. J.; Felker, B.; Smith, R. F.; Bell, P. M.; Bradley, D. K.; Collins, G. W.] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
[Hilsabeck, T. J.; Chung, T.; Kilkenny, J. D.; Sammuli, B.] Gen Atom Co, San Diego, CA 92103 USA.
[Hares, J. D.; Dymoke-Bradshaw, A. K. L.] Kentech Instrument Ltd, Wallingford OX10 8BA, Oxon, England.
RP Nagel, SR (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
FU Lawrence Livermore National Laboratory; Lawrence Livermore National
Security, LLC; U.S. Department of Energy; National Nuclear Security
Administration [DE-AC52-07NA27344]
FX The Authors would like to acknowledge the support of the staff at the
Jupiter Laser Facility and thank the Shape Group or providing the
modeling results. Lawrence Livermore National Laboratory is operated by
Lawrence Livermore National Security, LLC, for the U.S. Department of
Energy, National Nuclear Security Administration under Contract No.
DE-AC52-07NA27344.
NR 6
TC 0
Z9 0
U1 0
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050H
DI 10.1117/12.929736
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400014
ER
PT S
AU Shingleton, N
Kalantar, D
Wood, R
McCarville, T
Klingmann, J
Manuel, A
AF Shingleton, N.
Kalantar, D.
Wood, R.
McCarville, T.
Klingmann, J.
Manuel, A.
BE Bell, P
Grim, GP
TI Alignment of an x-Ray Imager Line of Sight in the National Ignition
Facility (NIF) Target Chamber using a Diagnostic Instrument Manipulator
(DIM) and Opposed Port Alignment System (OPAS)
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE NIF; fusion; alignment; telescope; line of sight; diagnostic; OPAS
AB The National Ignition Facility (NIF) fields multiple varieties of x-ray imaging systems used to diagnose the implosion physics of laser-driven fusion targets. The imagers consist of time-resolved x-ray detectors coupled with a snout assembly for spatial and/or spectral imaging. The instrument is mounted onto a cart that extends into the NIF target chamber, placing it in close proximity to the target and aligning with a tight tolerance using the Opposed Port Alignment System (OPAS). The OPAS is a modified, commercial Schmidt-Cassegrain optical telescope mounted at the target chamber port, opposite the Diagnostic Instrument Manipulator (DIM). In this paper, the approach used to characterize and align the x-ray imaging instruments is described. The characterization includes offline measurements of the pinhole assembly and the detector housing. Online, deviations of the DIM, as it is inserted along rails toward the target chamber center, are characterized and related to the OPAS view. An overview of the offline measurement stations is provided along with the process to develop the relationship between the offline alignment scopes and the OPAS as a function of DIM insertion. The combination of these measurements is used to mathematically construct the predicted location of the x-ray imager line of sight in the OPAS image space and determine the desired pinhole location to record data on a fusion experiment. The alignment accuracy of this approach will be discussed, as demonstrated with various x-ray instruments and pinhole configurations. Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-524755.
C1 [Shingleton, N.; Kalantar, D.; Wood, R.; McCarville, T.; Klingmann, J.; Manuel, A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Shingleton, N (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM shingleton3@llnl.gov
NR 7
TC 2
Z9 2
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050A
DI 10.1117/12.929967
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400008
ER
PT S
AU Teruya, AT
Vernon, SP
Moody, JD
Hsing, WW
Brown, CG
Griffin, M
Mead, AS
Tran, V
AF Teruya, Alan T.
Vernon, Stephen P.
Moody, James D.
Hsing, Warren W.
Brown, Christopher G.
Griffin, Matthew
Mead, Andrew S.
Vu Tran
BE Bell, P
Grim, GP
TI Performance of a 512 x 512 Gated CMOS Imager with a 250 ps Exposure Time
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Gated imagers; x-ray imagers; CMOS imagers
AB We describe the performance of a 512x512 gated CMOS read out integrated circuit (ROIC) with a 250 ps exposure time. A low-skew, H-tree trigger distribution system is used to locally generate individual pixel gates in each 8x8 neighborhood of the ROIC. The temporal width of the gate is voltage controlled and user selectable via a precision potentiometer. The gating implementation was first validated in optical tests of a 64x64 pixel prototype ROIC developed as a proof-of-concept during the early phases of the development program. The layout of the H-Tree addresses each quadrant of the ROIC independently and admits operation of the ROIC in two modes. If "common mode" triggering is used, the camera provides a single 512x512 image. If independent triggers are used, the camera can provide up to four 256x256 images with a frame separation set by the trigger intervals. The ROIC design includes small (sub-pixel) optical photodiode structures to allow test and characterization of the ROIC using optical sources prior to bump bonding. Reported test results were obtained using short pulse, second harmonic Ti:Sapphire laser systems operating at lambda similar to 400 nm at sub-ps pulse widths.
C1 [Teruya, Alan T.; Vernon, Stephen P.; Moody, James D.; Hsing, Warren W.] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
[Brown, Christopher G.; Griffin, Matthew; Mead, Andrew S.; Vu Tran] Natl Secure Technol LLC, Livermore, CA 94550 USA.
RP Teruya, AT (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
FU MIT- Lincoln Laboratory [512x512]
FX The authors would like to thank Robert Berger, Dennis Rathmann, David
Craig, Keith Warner, Antonio Soares, and Robert Reich of MIT- Lincoln
Laboratory for their work in the design and fabrication of the prototype
512x512 sensor and the electronic board set.
NR 8
TC 1
Z9 1
U1 0
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050F
DI 10.1117/12.930150
PG 9
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400012
ER
PT S
AU Teruya, AT
Bell, PM
Burns, S
Hagmann, C
Moody, JD
Richardson, M
AF Teruya, Alan T.
Bell, Perry M.
Burns, Scott
Hagmann, Chris
Moody, James D.
Richardson, Mike
BE Bell, P
Grim, GP
TI Testing of CMOS Devices in NIF's Harsh Neutron Environment
SO TARGET DIAGNOSTICS PHYSICS AND ENGINEERING FOR INERTIAL CONFINEMENT
FUSION
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Target Diagnostics Physics and Engineering for Inertial
Confinement Fusion
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE CMOS; neutron damage; National Ignition Facility (NIF)
AB Vendor supplied CMOS sensors were exposed to 14 MeV neutrons on yield shots in NIF and examined for damage. The sensors were exposed to multiple shots with a maximum fluence on one of the sensors of 4.3E11 n/cm(2). The results of post-shot testing will be presented. LLNL is investigating the suitability of CMOS imaging sensors for use in the camera of the ARIANE diagnostic which will mitigate the effects of the NIF neutron environment by dumping photoelectrons during the neutron pulse and then recording an image stored on a long persistence phosphor.
C1 [Teruya, Alan T.; Bell, Perry M.; Burns, Scott; Hagmann, Chris; Moody, James D.; Richardson, Mike] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Teruya, AT (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
NR 8
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9222-7
J9 PROC SPIE
PY 2012
VL 8505
AR 85050C
DI 10.1117/12.930132
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX57
UT WOS:000311838400010
ER
PT J
AU Oliveira-Neto, FM
Chin, SM
Hwang, HL
AF Moraes Oliveira-Neto, Francisco
Chin, Shih Miao
Hwang, Ho-ling
TI Aggregate Freight Generation Modeling Assessing Temporal Effect of
Economic Activity on Freight Volumes with Two-Period Cross-Sectional
Data
SO TRANSPORTATION RESEARCH RECORD
LA English
DT Article
ID FRAMEWORK
AB The most comprehensive publicly available freight databases are the Commodity Flow Survey and FHWA's Freight Analysis Framework. These two sources contain the dollar value and weight of freight movements at high geographic levels, such as states or metropolitan areas. Because of the difficulty of obtaining freight data at lower geographic levels, various practitioners and researchers have suggested estimating freight models on the basis of aggregate data. Following recent practice, a methodology is presented to estimate a nationwide production and attraction model for U.S. domestic trade of goods. To this end, a Commodity Flow Survey data set provided by the U.S. Census Bureau and composed of a 2-nonconsecutive-year period (2002 and 2007) of goods movement between U.S. states for 27 industry sectors was used. The state payroll by industry sector, obtained from the County Business Patterns of the U.S. census, was the variable used to estimate freight generation models. The main objective of this study was to analyze the temporal stability and predictability of the proposed aggregate models. The results indicate that payroll alone explains a significant portion of the freight production and attraction at the state level. However, such simplification in the model process did not result in reasonable predictions of freight for a future-year horizon. It is recommended that time-dependent factors (e.g., variables related to changes in industry productivity) affecting freight demand be considered in the modeling process.
C1 [Moraes Oliveira-Neto, Francisco; Chin, Shih Miao; Hwang, Ho-ling] Oak Ridge Natl Lab, Knoxville, TN 37932 USA.
RP Oliveira-Neto, FM (reprint author), Oak Ridge Natl Lab, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
EM oliveiranefm@ornl.gov
NR 12
TC 0
Z9 0
U1 1
U2 5
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0361-1981
J9 TRANSPORT RES REC
JI Transp. Res. Record
PY 2012
IS 2285
BP 145
EP 154
DI 10.3141/2285-17
PG 10
WC Engineering, Civil; Transportation; Transportation Science & Technology
SC Engineering; Transportation
GA 047YX
UT WOS:000311878500018
ER
PT S
AU Anderson, J
AF Anderson, Jacob
CA CMS Hcal Collaboration
GP IOP
TI Upgrade of the CMS hadron calorimeter for an upgraded LHC
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB The CMS barrel and endcap hadron calorimeters (Hcal) upgrading the current photo-sensors are hybrid photodiodes (HPDs) to meet the demands of the upgraded luminosity of the LHC. A key aspect of the Hcal upgrade is to add longitudinal segmentation to improve background rejection, energy resolution, and electron isolation at L1 trigger. The increased segmentation can be achieved by replacing the HPD's with multi-pixel Geiger-mode avalanche photodiodes. The upgraded electronics are required to operate in a harsh environment and are constrained by the existing infrastructure. The proposed solutions span from chip level to system level. They include the development of a new ADC ASIC, the design and testing of higher speed transmitters to handle the increased data volume, the evaluation and use of circuits from other developments, evaluation of commercial FPGAs, better thermal design and improvements in the overall architecture.
C1 [Anderson, Jacob; CMS Hcal Collaboration] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Anderson, J (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM andersj@fnal.gov
NR 4
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012019
DI 10.1088/1742-6596/404/1/012019
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100019
ER
PT S
AU Bonvicini, V
Driutti, A
Cauz, D
Pauletta, G
Rubinov, P
Santi, L
Wenzel, H
AF Bonvicini, V.
Driutti, A.
Cauz, D.
Pauletta, G.
Rubinov, P.
Santi, L.
Wenzel, H.
GP IOP
TI Scintillating Glasses for Total Absorption Dual Readout Calorimetry
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB Scintillating glasses are a potentially cheaper alternative to crystal - based calorimetry with common problems related to light collection, detection and processing. As such, their use and development are part of more extensive R&D aimed at investigating the potential of total absorption, combined with the readout (DR) technique, for hadron calorimetry. A recent series of measurements, using cosmic and particle beams from the Fermilab test beam facility and scintillating glass with the characteristics required for application of the DR technique, serve to illustrate the problems addressed and the progress achieved by this R&D. Alternative solutions for light collection (conventional and silicon photomultipliers) and signal processing are compared, the separate contributions of scintillation and Cherenkov processes to the signal are evaluated and results are compared to simulation.
C1 [Bonvicini, V.] INFN Trieste, Trieste, Ts, Italy.
[Driutti, A.; Cauz, D.; Pauletta, G.; Santi, L.] Univ Udine, Udine, UD, Italy.
[Driutti, A.; Cauz, D.; Pauletta, G.; Santi, L.] Ist Nazl Fis Nucl, Udine, UD, Italy.
[Rubinov, P.; Wenzel, H.] Fermilab Natl Accelerator Lab, Batavia, IL USA.
RP Bonvicini, V (reprint author), INFN Trieste, Trieste, Ts, Italy.
EM giovanni.pauletta@uniud.it
NR 7
TC 0
Z9 0
U1 2
U2 3
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012057
DI 10.1088/1742-6596/404/1/012057
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100057
ER
PT S
AU Gatto, C
Di Benedetto, V
Mazzacane, A
AF Gatto, C.
Di Benedetto, V.
Mazzacane, A.
CA T1015 Collaboration
GP IOP
TI Preliminary Results from a Test Beam of ADRIANO Prototype
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB The physics program at future colliders demands an energy resolution of the calorimetric component of detectors at the limits of traditional techniques. The ADRIANO technology (A Dual-readout Integrally Active Non-segmented Option) is under development with an expected excellent performance. Results from detailed Monte Carlo studies on performance with respect to energy resolution, linear response and transverse containment and a preliminary optimization of the layout are presented. A baseline configuration is chosen with an estimated energy resolution of sigma(E)/E approximate to 30%/root E, to support an extensive R&D program recently started by T1015 Collaboration at Fermilab. Preliminary results from a test beam at the Fermilab Test Beam Facility (FTBF) of a similar to 1 lambda(I) prototype are presented, along with simulation studies. Future prospects with ultra-heavy glass are, also, summarized.
C1 [Gatto, C.] Ist Nazl Fis Nucl, Sez Napoli, Via Cinthia, I-80126 Naples, Italy.
[Di Benedetto, V.] Ist Nazl Fis Nucl, Univ Salerno, Via Cinthia, I-80126 Naples, Italy.
[Mazzacane, A.] Fermilab Natl Accelerator Lab, Batavia, IL USA.
RP Gatto, C (reprint author), Ist Nazl Fis Nucl, Sez Napoli, Via Cinthia, I-80126 Naples, Italy.
EM corrado.gatto@infn.it
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012030
DI 10.1088/1742-6596/404/1/012030
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100030
ER
PT S
AU Groom, D
AF Groom, Don
GP IOP
TI Why a homogeneous dual readout calorimeter won't work
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
ID HADRON; URANIUM
AB If the response to a hadronic shower in a semi-infinite uniform calorimeter structure is S relative to the electronic response, then S/E = [f(em)+(1-f(em))(h/e)], where E is the incident hadron energy, f(em) is the electronic shower fraction, and h/e is the hadron/electron response ratio. In conventional calorimeters the resolution is dominated by the stochastic variable f(em), whose broad, skewed pdf has an energy-dependent mean. The slow increase of the mean with E is responsible for response nonlinearity and the skewness results in a non-Gaussian response. If the cascade is observed in two channels with different values of h/e (typically scintillator(S) and Cherenkov (C)), f(em) can be eliminated. An energy estimator, linear in C and S, is obtained which is proportional to the incident hadron's energy. The resolution depends upon the contrast in h/e between the two channels. The Cherenkov h/e will be 0.20-0.25. In sampling calorimeters, h/e can be increased to about 0.7 by arranging for preferential absorption of the electromagnetic (EM) shower energy in the absorber (decreasing e) and using a hydrogenous detector (organic scintillator) to enhance h through the contribution of recoil protons in n-p scattering. Neither mechanism is available in a homogeneous crystal or glass scintillator, where h/e is expected to be in the vicinity of 0.4 because of invisible hadronic energy loss and other effects. The h/e contrast is very likely too small to provide the needed energy resolution. We support this conclusion with simple Monte Carlo simulations.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Groom, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM degroom@lbl.gov
NR 18
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012028
DI 10.1088/1742-6596/404/1/012028
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100028
ER
PT S
AU Guardincerri, E
AF Guardincerri, Elena
GP IOP
TI The LBNE near detector
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
ID NEUTRINO OSCILLATIONS; MATTER; MASSES
AB The Long-Baseline Neutrino Experiment (LBNE) is a next generation neutrino oscillation experiment currently proposed for construction in the United States with the main goal of studying muon (anti)neutrinos oscillations into electron (anti)neutrinos over a distance greater than 1000 km and over a wide range of neutrino energies. Its main physics results will be the precision measurement of delta(CP) and all three mixing angles. A value of delta(CP) different from 0 or pi will appear in the LBNE data as a small (0% to 40%) asymmetry on the oscillation probability of neutrinos versus antineutrinos. Such a small effect requires a very good control of the systematic uncertainties affecting the measurement and this can only been accomplished using a near detector. I will describe the LBNE near detector complex focusing primarily on its reference design, which includes a set of muon detectors to monitor the beam and a magnetized liquid argon TPC surrounded by a muon identifier detector to measure neutrino interactions at the near site.
C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Guardincerri, E (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
NR 12
TC 1
Z9 1
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012036
DI 10.1088/1742-6596/404/1/012036
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100036
ER
PT S
AU Magill, S
AF Magill, Stephen
GP IOP
TI The NOvA Neutrino Calorimeter
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB The NOvA experiment is a long baseline neutrino detector designed to 1) observe oscillations of muon neutrinos to electron neutrinos, 2) determine the ordering of the neutrino mass states, and 3) observe CP violation in neutrinos if it exists. To accomplish this, the NOvA detector is a unique low-Z, high sampling fraction calorimeter capable of precise measurements of the particles produced in a neutrino interaction while also being able to reject particles from background cosmic rays. Some experience has already been obtained with the operation of a prototype near detector on the Fermi lab site, and construction of the far detector is just beginning in northern Minnesota. The calorimetric properties of the NOvA detector will be described with emphasis on relevance to the overall experimental goals.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
RP Magill, S (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
NR 4
TC 1
Z9 1
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012035
DI 10.1088/1742-6596/404/1/012035
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100035
ER
PT S
AU Magill, S
AF Magill, Stephen
GP IOP
TI Use of Particle Flow Algorithms in a Dual Readout Crystal Calorimeter
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB The ability to grow clear, dense scintillating crystals presents an opportunity for development of a total absorption calorimeter that could contain multi-GeV hadrons in a detector volume similar to that of present-day calorimeters. With appropriate crystals and optimized readout elements, both scintillation and Cerenkov photons can be produced and detected separately. This dual readout approach allows one to selectively correct particle energies, resulting in significant gains in energy resolution -> 2.0%/root E or even better for hadrons. An R&D program is underway to 1) develop appropriate clear, dense crystals, 2) test innovative readout methods for both scintillation and Cerenkov light, and 3) provide test beam capability for crystal and readout sensor testing and simulation verification. As part of this effort, simulation studies have been done assuming a dual readout crystal calorimeter implementation for a future e(+)e(-) linear collider detector. By using the dual readout correction, corrections for magnetic field effects on low momentum charged hadrons, and particle flow techniques, substantial improvements in dijet mass resolution are obtained.
C1 Argonne Natl Lab, Argonne, IL 60439 USA.
RP Magill, S (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA.
NR 2
TC 1
Z9 1
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012048
DI 10.1088/1742-6596/404/1/012048
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100048
ER
PT S
AU Wenzel, H
AF Wenzel, Hans
GP IOP
TI Simulation Studies of a Total Absorption Dual Readout Calorimeter
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB We have created a flexible, easy to use simulation framework based on GEANT 4 to perform detailed simulations of a crystal based total absorption calorimeter with dual readout. The correction to the observed scintillation signal can be determined by comparison of the scintillation signal with the beam energy as a function of the Cerenkov-to-scintillation C/S ratio. In this article we describe the features of the software we developed and show results for various crystal materials and physics lists. We show that applying an energy-independent correction results in an energy resolution of approximate to 10%/root E for single pi(-).
C1 Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Wenzel, H (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM wenzel@fnal.gov
NR 7
TC 2
Z9 2
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012049
DI 10.1088/1742-6596/404/1/012049
PG 7
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100049
ER
PT S
AU Woody, C
Kistenev, E
AF Woody, C.
Kistenev, E.
CA PHENIX Collaboration
GP IOP
TI The Calorimeter Systems for the sPHENIX Experiment at RHIC
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
AB A major upgrade is being planned for the PHENIX experiment that will have greatly enhanced physics capabilities to measure jets in relativistic heavy ion collisions at RHIC, as well as in polarized proton interactions, and eventually electron ion collisions at an Electron Ion Collider. This upgrade, sPHENIX, will include two new calorimeter systems. One will be a hadronic calorimeter, which will be the first hadronic calorimeter ever used in an experiment at RHIC, and another will be a new compact electromagnetic calorimeter. Both calorimeters will cover a region of +/- 1.1 in pseudorapidity and 2 pi in phi. The hadron calorimeter will be based on scintillator plates interspersed between steel absorber plates and read out with wavelength shifting fibers. The electromagnetic calorimeter will be an accordion design that will utilize scintillating fibers embedded in a matrix consisting of tungsten plates, tungsten powder and epoxy. The readout for both calorimeters will use silicon photomultipliers. The overall design of these two calorimeter systems is described along with the R&D efforts currently being pursued to develop them along with their readout.
C1 [Woody, C.; Kistenev, E.; PHENIX Collaboration] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Woody, C (reprint author), Brookhaven Natl Lab, Dept Phys, Bldg 510C, Upton, NY 11973 USA.
EM woody@bnl.gov; kistenev@bnl.gov
NR 2
TC 0
Z9 0
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012024
DI 10.1088/1742-6596/404/1/012024
PG 6
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100024
ER
PT S
AU Zhao, ZW
Huang, J
Meziane, M
Zheng, X
Reimer, PE
Armstrong, D
Averett, T
Deconinck, W
AF Zhao, Z. W.
Huang, J.
Meziane, M.
Zheng, X.
Reimer, P. E.
Armstrong, D.
Averett, T.
Deconinck, W.
CA SoLID Collaboration
GP IOP
TI EM Calorimeters for SoLID at Jefferson Lab
SO XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS
(CALOR2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 15th International Conference on Calorimetry in High Energy Physics
(CALOR)
CY JUN 04-08, 2012
CL Santa Fe, NM
ID SHASHLYK CALORIMETER; DETECTOR
AB Several approved experiments at Jefferson Lab for the 12 GeV era will use the proposed Solenoid Large Intensity Device (SoLID) spectrometer. Two EM calorimeters with a total area of 15 square meters are required for electron identification and electron-pion separation. The challenge is to build calorimeters that can withstand high radiation doses in high magnetic field region and bring photon signals to low field region for readout. Several types of calorimeters were considered and we are favoring Shashlyk type as a result of balancing performance and cost. Our preliminary design and simulation of SoLID EM calorimeters are presented.
C1 [Zhao, Z. W.; Zheng, X.] Univ Virginia, Dept Phys, 382 Mccormick Rd, Charlottesville, VA 22904 USA.
[Huang, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Meziane, M.] Duke Univ, Dept Phys, Durham, NC 27708 USA.
[Reimer, P. E.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Armstrong, D.; Averett, T.; Deconinck, W.] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA.
RP Zhao, ZW (reprint author), Univ Virginia, Dept Phys, 382 Mccormick Rd, Charlottesville, VA 22904 USA.
EM zwzhao@jlab.org
OI Deconinck, Wouter/0000-0003-4033-6716
NR 6
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 404
AR 012020
DI 10.1088/1742-6596/404/1/012020
PG 5
WC Physics, Multidisciplinary; Physics, Particles & Fields
SC Physics
GA BDS62
UT WOS:000314704100020
ER
PT S
AU Uzunov, NM
Liguori, N
Fontana, CL
Baneva, Y
Atroshchenko, K
Bello, M
Moschini, G
Rosato, A
Rigato, V
Doyle, B
Rossi, P
AF Uzunov, N. M.
Liguori, N.
Fontana, C. L.
Baneva, Y.
Atroshchenko, K.
Bello, M.
Moschini, G.
Rosato, A.
Rigato, V.
Doyle, B.
Rossi, P.
BA DimovaMalinovska, D
Nesheva, D
Pecheva, E
Petrov, AG
Primatarowa, MT
BF DimovaMalinovska, D
Nesheva, D
Pecheva, E
Petrov, AG
Primatarowa, MT
TI Feasibility study of the proton yield from the reaction D(He-3,p)He-4 as
a possible tool for radiotherapy treatment
SO 17TH INTERNATIONAL SCHOOL ON CONDENSED MATTER PHYSICS (ISCMP): OPEN
PROBLEMS IN CONDENSED MATTER PHYSICS, BIOMEDICAL PHYSICS AND THEIR
APPLICATIONS
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 17th International School on Condensed Matter Physics (ISCMP) - Open
Problems in Condensed Matter Physics, Biomedical Physics and their
Applications
CY SEP 02-07, 2012
CL Varna, BULGARIA
SP Bulgarian Acad Sci, Inst Solid State Phys
ID CROSS-SECTION; NUCLEAR-REACTION; DEUTERIUM
AB Recent achievements in proton and carbon ions therapy have shown the importance of the hadron therapy methods. Aiming at radiotherapy applications such as dermatological and intra-operative procedures, where a short range treatment is needed, we have studied the use of nuclear reactions induced by low energy ions from small accelerators. A very suitable reaction is D(He-3, p)He-4, using He-3(+) ions with energies of about 800 keV. The resulting protons have energies above 17 MeV and could deliver significant radiation dose depending on the accelerator He-3(+) beam current and the irradiation time. The deuterium containing target was prepared by reactive magnetron sputtering of titanium in Ar and Ar+D-2 radiofrequency plasma on a substrate of Silicon. The Ti-D-x stoichiometry and deuterium content was determined by Ion Beam Analysis. The accelerated He-3(+) beam was provided by the 2.5MV Van de Graaff accelerator at the National Laboratories of Legnaro, INFN, Italy. Proton yield as a function of the beam current at different forward scattering angles has been studied for the energies of the incoming He-3(+) in the 700keV - 800keV energy interval. The irradiated volume and the radiation dose in biological tissues as a function of the proton energy and proton yield has been estimated. Possible applications in small animal treatment studies as well as potential clinical radiotherapy applications are discussed.
C1 [Uzunov, N. M.] Shumen Univ K Preslavsky, Fac Nat Sci, 115 Univ Ska Str, Shumen 9712, Bulgaria.
[Liguori, N.; Fontana, C. L.; Atroshchenko, K.; Rossi, P.] Univ Padua, Dept Phys, I-35131 Padua, Italy.
[Baneva, Y.] Med Univ, Dept Phys & Biophys, Varna 9000, Bulgaria.
[Bello, M.; Moschini, G.] INFN, Natl Labs Legnaro, I-35020 Legnaro, Italy.
[Rosato, A.] Univ Padua, Dept Oncol & Surg Sci, I-35128 Padua, Italy.
[Uzunov, N. M.; Liguori, N.; Rossi, P.] INFN sect Padua, I-35131 Padua, Italy.
[Doyle, B.; Rossi, P.] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Uzunov, NM (reprint author), Shumen Univ K Preslavsky, Fac Nat Sci, 115 Univ Ska Str, Shumen 9712, Bulgaria.
EM nikolay.uzunov@lnl.infn.it
OI Rigato, Valentino/0000-0003-0671-7750
FU ICTP, Trieste, Italy; Program for Training and research in Italian
Laboratories; U. S. Department of Energy's National Nuclear Security
Administratio [DE-AC04-94AL85000]
FX One of the authors (N Uzunov) would like to acknowledge the support
received from the ICTP, Trieste, Italy and in particular the Program for
Training and research in Italian Laboratories. Sandia National
Laboratories is a multi- program laboratory operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Company, for
the U. S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 13
TC 0
Z9 0
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 398
AR 012029
DI 10.1088/1742-6596/398/1/012029
PG 6
WC Physics, Applied; Physics, Condensed Matter
SC Physics
GA BDQ56
UT WOS:000314465000029
ER
PT J
AU Le, QV
Han, J
Gray, JW
Spellman, PT
Borowsky, A
Parvin, B
AF Le, Quoc V.
Han, Ju
Gray, Joe W.
Spellman, Paul T.
Borowsky, Alexander
Parvin, Bahram
GP IEEE
TI LEARNING INVARIANT FEATURES OF TUMOR SIGNATURES
SO 2012 9TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING (ISBI)
LA English
DT Proceedings Paper
CT 9th IEEE International Symposium on Biomedical Imaging (ISBI) - From
Nano to Macro
CY MAY 02-05, 2012
CL Barcelona, SPAIN
SP IEEE, IEEE Engn Med & Biol Soc (EMBS), IEEE Signal Proc Soc
DE subspace learning; tumor architecture; apoptotic and necrotic signatures
ID BREAST-CANCER; CLASSIFICATION
AB We present a novel method for automated learning of features from unlabeled image patches for classification of tumor architecture. In contrast to previous manually-designed feature detectors (e. g., Gabor basis function), the proposed method utilizes inexpensive unlabeled data to construct features. The algorithm, also known as reconstruction independent subspace analysis, can be described as a two-layer network with non-linear responses, where the second layer represents subspace structures. The technique is applied to tissue sections for characterizing necrosis, apoptotic, and viable regions of Glioblastoma Multifrome (GBM) from TCGA dataset. Experimental results show that this method outperforms more complex expert-designed approaches. The fact that our approach learns features automatically from unlabeled data promises a wider application of self-learning strategies for tissue characterization.
C1 [Le, Quoc V.] Stanford Univ, Dept Comp Sci, Stanford, CA 94305 USA.
[Han, Ju; Parvin, Bahram] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA USA.
[Gray, Joe W.; Spellman, Paul T.] Oregon Hlth & Sci Univ, Ctr Spatial Syst Biomed, Portland, OR USA.
[Borowsky, Alexander] Univ Calif Davis, Ctr Comparat Med, Davis, CA 95616 USA.
RP Le, QV (reprint author), Stanford Univ, Dept Comp Sci, Stanford, CA 94305 USA.
FU NIH [R01 CA140663, U24 CA1437991]; Lawrence Berkeley National Laboratory
[DE-AC02-05CH11231]
FX This work was supported by NIH grant R01 CA140663 (bp) and U24 CA1437991
(ps) carried out at Lawrence Berkeley National Laboratory under Contract
No. DE-AC02-05CH11231.
NR 22
TC 4
Z9 4
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1858-8
PY 2012
BP 302
EP 305
PG 4
WC Engineering, Electrical & Electronic; Radiology, Nuclear Medicine &
Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA BDA85
UT WOS:000312384100076
ER
PT J
AU Chang, H
Loss, LA
Spellman, PT
Borowsky, A
Parvin, B
AF Chang, Hang
Loss, Leandro A.
Spellman, Paul T.
Borowsky, Alexander
Parvin, Bahram
GP IEEE
TI BATCH-INVARIANT NUCLEAR SEGMENTATION IN WHOLE MOUNT HISTOLOGY SECTIONS
SO 2012 9TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING (ISBI)
LA English
DT Proceedings Paper
CT 9th IEEE International Symposium on Biomedical Imaging (ISBI) - From
Nano to Macro
CY MAY 02-05, 2012
CL Barcelona, SPAIN
SP IEEE, IEEE Engn Med & Biol Soc (EMBS), IEEE Signal Proc Soc
DE Nuclear segmentation; Nuclear/ Background classification; H&E tissue
section
ID COLOR; IMAGES
AB The Cancer Genome Atlas (TCGA) provides a rich repository of whole mount tumor sections that are collected from different laboratories. However, there are a significant amount of technical and biological variations that impede analysis. We have developed a novel approach for nuclear segmentation in histology sections, which addresses the problem of technical and biological variations by incorporating information from manually annotated reference patches with the local color space of the original image. Subsequently, the problem is formulated within a multi-reference graph cut with geodesic constraints. This approach has been validated on manually curated samples and then applied to a dataset of 440 whole mount tissue sections, originating from different laboratories, which are typically 40k-by-40k pixels or larger. Segmentation results, through a zoomable interface, and extracted morphometric data are available at: http://tcga.lbl.gov.
C1 [Chang, Hang; Loss, Leandro A.; Parvin, Bahram] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
RP Chang, H (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
NR 14
TC 3
Z9 3
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1858-8
PY 2012
BP 856
EP 859
PG 4
WC Engineering, Electrical & Electronic; Radiology, Nuclear Medicine &
Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA BDA85
UT WOS:000312384100215
ER
PT J
AU Loss, LA
Chang, H
Sarkar, P
Auer, M
Parvin, B
AF Loss, Leandro A.
Chang, Hang
Sarkar, Purbasha
Auer, Manfred
Parvin, Bahram
GP IEEE
TI DETECTION OF 3D FILAMENTOUS NETWORKS FROM TOMOGRAPHIC ELECTRON
MICROSCOPY
SO 2012 9TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING (ISBI)
LA English
DT Proceedings Paper
CT 9th IEEE International Symposium on Biomedical Imaging (ISBI) - From
Nano to Macro
CY MAY 02-05, 2012
CL Barcelona, SPAIN
SP IEEE, IEEE Engn Med & Biol Soc (EMBS), IEEE Signal Proc Soc
DE Filament Segmentation; Perceptual Organization; Electron Microscopy;
Plant Cell Wall
ID DIRECT VISUALIZATION; CELL WALL
AB This paper presents a computational approach for detection of filamentous networks in 3D tomographic electron microscopy. Due to the general heterogeneity of chemical staining, imaged signatures may appear punctate and discontinuous. Very often, there is a necessity to characterize organization and phenotypic signatures of stained structures. This is the example of polysaccharides in the plant cell wall, where characterization of its inner structure allows for studies of their mechanical properties and accessibility. Our approach consists of three steps: (i) Hessian filtering for signal enhancement; (ii) tensor voting for detection and completion of organized patterns; and (iii) curve tracking for segmentation of filaments and junctions. We validated our approach by detecting filaments in synthetic images and real plant cell walls imaged by 3D tomographic electron microscopy.
C1 [Loss, Leandro A.; Chang, Hang; Parvin, Bahram] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Sarkar, Purbasha; Auer, Manfred] Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA USA.
RP Loss, LA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
FU Energy Biosciences Institute, U.C. Berkeley (EBI) [007G18]; National
Cancer Institute [R01CA140663, DE-AC02-05CH11231]; National Institute of
Health [GM051487-15]
FX Research supported by (i) the Energy Biosciences Institute, U.C.
Berkeley (EBI grant No. 007G18), (ii) the National Cancer Institute
(grant No. R01CA140663) under Contract No. DE-AC02-05CH11231, and (iii)
the National Institute of Health (grant No. 2 P01 GM051487-15).
NR 8
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1858-8
PY 2012
BP 1385
EP 1388
PG 4
WC Engineering, Electrical & Electronic; Radiology, Nuclear Medicine &
Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA BDA85
UT WOS:000312384100358
ER
PT J
AU Han, J
Chang, H
Fontenay, GV
Spellman, PT
Borowsky, A
Parvin, B
AF Han, Ju
Chang, Hang
Fontenay, Gerald V.
Spellman, Paul T.
Borowsky, Alexander
Parvin, Bahram
GP IEEE
TI MOLECULAR BASES OF MORPHOMETRIC COMPOSITION IN GLIOBLASTOMA MULTIFORME
SO 2012 9TH IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING (ISBI)
LA English
DT Proceedings Paper
CT 9th IEEE International Symposium on Biomedical Imaging (ISBI) - From
Nano to Macro
CY MAY 02-05, 2012
CL Barcelona, SPAIN
SP IEEE, IEEE Engn Med & Biol Soc (EMBS), IEEE Signal Proc Soc
DE Tumor architecture; Cox proportional-hazards model; consensus
clustering; molecular association
ID THERAPEUTIC TARGET; EXPRESSION; DISCOVERY
AB Integrated analysis of tissue histology with the genome-wide array (e. g., OMIC) and clinical data have the potential for hypothesis generation and be prognostic. OMIC and clinical data are typically characterized and summarized at the patient level while whole mount histological sections are often heterogeneous in terms of nuclear morphology and organization. In this paper, we propose a multi-level framework for summarization and association of morphometric data. At the lowest level, each nucleus is segmented and then profiled with a multi-dimensional representation. At the intermediate level, cellular profiles are summarized within a local neighborhood, and further clustered into subtypes. At the highest level, each patient is represented by the composition of subtypes that are computed from the intermediate level, and then integrated with OMIC and outcome data for further analysis. The framework has been applied to Glioblastoma multiforme (GBM) data from The Cancer Genome Atlas (TCGA). Based on cellularity and nuclear size, four subtypes have been identified at the intermediate level. Subsequent multi-variate survival analysis indicates that the patient composition of one of the subtypes, with extremely low cellularity and small nucleus size, has a significantly higher hazard ratio. Further correlation of this subtype with the molecular data reveals enrichment of (i) STAT3 pathway and (ii) common regulators of PKC, TNF, AGT, and PDGF.
C1 [Han, Ju; Chang, Hang; Fontenay, Gerald V.; Parvin, Bahram] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
[Spellman, Paul T.] Oregon Hlth & Sci Univ, Ctr Spatial Syst Biomed, Portland, OR USA.
[Borowsky, Alexander] Univ Calif Davis, Ctr Comparat Med, Davis, CA USA.
RP Han, J (reprint author), Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA.
FU NIH [U24 CA1437991]; Lawrence Berkeley National Laboratory
[DEAC02-05CH11231]
FX This work was supported by NIH grant a U24 CA1437991 (ps) carried out at
Lawrence Berkeley National Laboratory under Contract No.
DEAC02-05CH11231.
NR 17
TC 2
Z9 2
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1858-8
PY 2012
BP 1631
EP 1634
PG 4
WC Engineering, Electrical & Electronic; Radiology, Nuclear Medicine &
Medical Imaging
SC Engineering; Radiology, Nuclear Medicine & Medical Imaging
GA BDA85
UT WOS:000312384100421
ER
PT S
AU Ferry, VE
AF Ferry, Vivian E.
GP IEEE
TI Light Trapping in Plasmonic Photovoltaics
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
ID SOLAR-CELLS
AB Plasmonic and nanophotonic structures enable the manipulation and molding of light in nanoscale devices. These nanostructures are designed and integrated to achieve broadband photocurrent enhancement in ultrathin film photovoltaics.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA.
RP Ferry, VE (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Labs, Berkeley, CA 94720 USA.
EM veferry@lbl.gov
NR 3
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 52
EP 53
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000027
ER
PT S
AU Sharma, YD
Jun, YC
Kim, JO
Brener, I
Krishna, S
AF Sharma, Yagya D.
Jun, Young Chul
Kim, Jun Oh
Brener, Igal
Krishna, Sanjay
GP IEEE
TI Polarization-dependent Photocurrent Enhancement in
Metamaterial-integrated Quantum Dot Infrared Detectors
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB We present the design, fabrication, and characterization of quantum dots-in-a-well infrared detectors integrated with a planar metamaterial layer. The resonantly excited metamaterial layer provides strongly enhanced optical fields and the increased photocurrent is obtained at the metamaterial resonant frequency.
C1 [Sharma, Yagya D.; Kim, Jun Oh; Krishna, Sanjay] Univ New Mexico, Dept ECE, Ctr High Technol Mat, Albuquerque, NM 87185 USA.
[Jun, Young Chul; Brener, Igal] Ctr Integrated Nanotechnol, Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Sharma, YD (reprint author), Univ New Mexico, Dept ECE, Ctr High Technol Mat, Albuquerque, NM 87185 USA.
RI Jun, Young Chul/I-2274-2013
OI Jun, Young Chul/0000-0002-7578-8811
FU AFRL [FA9453- 12- 1- 0131]; U. S. Department of Energy's National
Nuclear Security Administration [DE- AC04- 94AL85000]
FX We acknowledge support from AFRL FA9453- 12- 1- 0131. This work was
performed, in part, at the Center for Integrated Nanotechnologies, a U.
S. Department of Energy, Office of Basic Energy Sciences user facility.
Sandia National Laboratories is a multi- program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U. S. Department of Energy's National
Nuclear Security Administration under contract DE- AC04- 94AL85000.
NR 1
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 171
EP +
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000087
ER
PT S
AU Ginis, V
Tassin, P
Danckaert, J
Soukoulis, C
Veretennicoff, I
AF Ginis, Vincent
Tassin, Philippe
Danckaert, Jan
Soukoulis, Costas
Veretennicoff, Irina
GP IEEE
TI Beating the diffraction limit with perfect confinement inside a
right-handed cavity
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB We develop a novel approach to create optical resonators by applying the geometrical technique of transformation optics and we show that the fundamental diffraction limit can be overcome inside metamaterials with right-handed material parameters.
C1 [Ginis, Vincent; Danckaert, Jan; Veretennicoff, Irina] Vrije Univ Brussel, Appl Phys Res Grp, Pleinlaan 2, B-1050 Brussels, Belgium.
[Tassin, Philippe; Soukoulis, Costas] Ames Lab US DOE, Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA.
RP Ginis, V (reprint author), Vrije Univ Brussel, Appl Phys Res Grp, Pleinlaan 2, B-1050 Brussels, Belgium.
RI Tassin, Philippe/B-7152-2008; Ginis, Vincent/J-9700-2014;
OI Danckaert, Jan/0000-0002-7204-0031
FU Research Foundation Flanders ( FWO- Vlaanderen); Belgian Science Policy
Office [IAPVI/ 10]; U. S. Department of Energy, Office of Basic Energy
Science, Division of Materials Sciences and Engineering ( Ames
Laboratory is operated for the U. S. Department of Energy by Iowa State
Universit [DEAC0207CH11358]
FX V. G. is a Ph. D. Fellow ( Aspirant) of the Research Foundation Flanders
( FWO- Vlaanderen). Work at VUB was supported by the Belgian Science
Policy Office under Grant No. IAPVI/ 10. Work at Ames Laboratory was
partially supported by the U. S. Department of Energy, Office of Basic
Energy Science, Division of Materials Sciences and Engineering ( Ames
Laboratory is operated for the U. S. Department of Energy by Iowa State
University under Contract No. DEAC0207CH11358).
NR 9
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 336
EP +
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000169
ER
PT S
AU Yang, X
Chang, ASP
Chen, B
Gu, C
Bond, TC
AF Yang, Xuan
Chang, Allan S. P.
Chen, Bin
Gu, Claire
Bond, Tiziana C.
GP IEEE
TI Multiplexed Gas Sensing Based on Raman Spectroscopy in Photonic Crystal
Fiber
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB We present the highly-sensitive Raman detection of various gases (nitrogen, oxygen, carbon dioxide, toluene, acetone and 1,1,1-trichloroethane) using a hollow core photonic crystal fiber probe and demonstrate its multiplexed gas sensing capability quantitatively.
C1 [Yang, Xuan; Gu, Claire] Univ Calif Santa Cruz, 1156 High St, Santa Cruz, CA 95064 USA.
[Yang, Xuan; Chang, Allan S. P.; Chen, Bin; Bond, Tiziana C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Chen, Bin] NASA Ames Res Ctr, Adv Studies Labs, Moffett Field, CA 94035 USA.
RP Gu, C (reprint author), Univ Calif Santa Cruz, 1156 High St, Santa Cruz, CA 95064 USA.
EM claire@soe.ucsc.edu; bond7@llnl.gov
FU U. S. Department of Energy by LLNL [DE- AC52- 07NA27344]; Lawrence
Scholar Program at LLNL
FX This work is supported by NSF and performed under the auspices of the U.
S. Department of Energy by LLNL under contract DE- AC52- 07NA27344. X.
Y. acknowledges financial support by the Lawrence Scholar Program at
LLNL.
NR 3
TC 0
Z9 0
U1 3
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 447
EP +
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000223
ER
PT S
AU Humble, TS
Earl, DD
Williams, BP
AF Humble, Travis S.
Earl, D. Duncan
Williams, Brian P.
GP IEEE
TI Tamper-Indicating Quantum Optical Seals
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB We demonstrate a quantum optical seal using entangled photons to monitor the integrity of a fiber-optic channel subject to tampering. This application of quantum photonics provides a basis for physical layer security in cyber-physical systems.
C1 [Humble, Travis S.; Earl, D. Duncan; Williams, Brian P.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Humble, TS (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM humblets@ornl.gov
NR 10
TC 1
Z9 1
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 475
EP 476
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000237
ER
PT S
AU Park, B
Jung, IW
Provine, J
Howe, RT
Solgaard, O
AF Park, Bryan
Jung, Il Woong
Provine, J.
Howe, Roger T.
Solgaard, Olav
GP IEEE
TI Double-Layer Silicon Photonic Crystal Fiber Tip Temperature Sensor
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
DE double-layer photonic crystal; fiber sensor; temperature sensing;
GOPHER; template-assisted epoxy bonding
AB We describe the fabrication of a double-layer silicon photonic crystal using self-aligned CMOS-compatible processes and its assembly on a single mode fiber using a wafer template and epoxy bonding. The fiber sensor has sharper resonances and higher temperature sensitivity than the previously-reported single-layer sensor. The new assembly method facilitates batch-production of the sensor and allows for extension to high temperature measurement.
C1 [Park, Bryan; Solgaard, Olav] Stanford Univ, Dept Elect Engn, Edward L Ginzton Lab, Stanford, CA 94305 USA.
[Jung, Il Woong] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Provine, J.; Howe, Roger T.] Stanford Univ, Dept Elect Engn, Integrated Circuits Lab, Stanford, CA 94305 USA.
RP Park, B (reprint author), Stanford Univ, Dept Elect Engn, Edward L Ginzton Lab, Stanford, CA 94305 USA.
EM insun@stanford.edu
FU Defense Advanced Research Projects Agency ( DARPA) N/ MEMS S& T
Fundamentals program [N66001- 10- 1- 4004]; Boeing company [33130]
FX This work was sponsored by the Defense Advanced Research Projects Agency
( DARPA) N/ MEMS S& T Fundamentals program under grant no. N66001- 10-
1- 4004 issued by the Space and Naval Warfare Systems Center Pacific (
SPAWAR) and the Boeing company under contract # 33130.
NR 11
TC 1
Z9 1
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 550
EP +
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000274
ER
PT S
AU Cai, H
Liu, S
Lalanne, E
Liu, PQ
Bouzi, P
Wang, XJ
Johnson, AM
AF Cai, Hong
Liu, Sheng
Lalanne, Elaine
Liu, Peter Q.
Bouzi, Pierre
Wang, Xiaojun
Johnson, Anthony M.
GP IEEE
TI Investigation of Giant Kerr Nonlinearity in Quantum Cascade Lasers Using
fs Mid-IR Pulses
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB Femtosecond mid-IR pulses were coupled into a quantum cascade laser. The spectral broadening and far-field profile of the transmitted pulses showed an intensity dependence. n(2) was experimentally estimated to be on the order of similar to 10(-9) cm(2)/W.
C1 [Cai, Hong; Liu, Sheng; Johnson, Anthony M.] UMBC, Dept Phys, Baltimore, MD 21250 USA.
[Cai, Hong; Liu, Sheng; Lalanne, Elaine] UMBC, Ctr Adv Studies Photon Res CASPR, Baltimore, MD 21250 USA.
[Johnson, Anthony M.] UMBC, CSEE Dept, Baltimore, MD 21250 USA.
[Liu, Sheng] Ctr Integrated Nanotechnol, Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Liu, Peter Q.; Bouzi, Pierre] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA.
[Wang, Xiaojun] AdTech Opt Inc, City Of Industry, CA 91748 USA.
RP Cai, H (reprint author), UMBC, Dept Phys, Baltimore, MD 21250 USA.
EM caihong1@umbc.edu
FU NSF MRI ( Major Research Instrumentation) [ECS- 0619548]; MIRTHE ( NSF
ERC) [ERC- 0540832]
FX This work was partially supported by NSF MRI ( Major Research
Instrumentation) Grant NSF ECS- 0619548 and MIRTHE ( NSF ERC) Grant NSF
ERC- 0540832.
NR 4
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 556
EP +
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000277
ER
PT S
AU Liu, S
Brener, I
Mahony, TS
Ginn, J
Bender, DA
Wright, JB
Wendt, JR
Ihlefeld, JF
Clem, PG
Sinclair, MB
AF Liu, Sheng
Brener, Igal
Mahony, Thomas S.
Ginn, James
Bender, Daniel A.
Wright, Jeremy B.
Wendt, Joel R.
Ihlefeld, Jon F.
Clem, Paul G.
Sinclair, Michael B.
GP IEEE
TI Direct observation of optical magnetism from a dielectric resonator
metamaterial using time-domain spectroscopy in the mid-infrared
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
AB We use phase-locked time-domain spectroscopy in the mid-infrared to directly demonstrate the "infrared magnetic mirror" behavior of an all-dielectric metamaterial. This metamaterial surface consists of micron-sized cubes of tellurium fabricated on a dielectric substrate.
C1 [Liu, Sheng; Brener, Igal; Mahony, Thomas S.; Ginn, James; Bender, Daniel A.; Wright, Jeremy B.; Wendt, Joel R.; Ihlefeld, Jon F.; Clem, Paul G.; Sinclair, Michael B.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Liu, S (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA.
EM snliu@sandia.gov
RI Liu, Sheng/P-6029-2014
OI Liu, Sheng/0000-0003-0967-4514
NR 5
TC 0
Z9 0
U1 1
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 784
EP 785
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000389
ER
PT S
AU Liu, Y
Huang, CN
Deibele, C
AF Liu, Yun
Huang, Chunning
Deibele, Craig
GP IEEE
TI A Narrow Linewidth Picosecond Pulsed Laser System for Hydrogen Ion Beam
Stripping
SO 2012 IEEE PHOTONICS CONFERENCE (IPC)
SE IEEE Photonics Conference
LA English
DT Proceedings Paper
CT 25th IEEE Photonics Conference (IPC)
CY SEP 23-27, 2012
CL Burlingame, CA
SP IEEE, Kotura, Rockley Grp, Intel, Cisco, Oracle Labs, Corning, Google, Luxtera, Fiber Chip, Rambus, Analog Devices, PMC, Sinoora, Soitec, Photon Design, Nat Photon, Commun Technol Roadmap, Simgui
C1 [Liu, Yun; Huang, Chunning; Deibele, Craig] Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37831 USA.
RP Liu, Y (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
NR 3
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2374-0140
BN 978-1-4577-0733-9
J9 IEEE PHOTON CONF
PY 2012
BP 933
EP 934
PG 2
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDD75
UT WOS:000312865000460
ER
PT J
AU Wozniak, PR
Kruszewski, A
AF Wozniak, P. R.
Kruszewski, A.
TI On Estimating Non-Uniform Density Distributions Using N Nearest
Neighbors
SO ACTA ASTRONOMICA
LA English
DT Article
DE Methods: statistical; Methods: numerical
ID GALAXY ENVIRONMENT; CLUSTERS
AB We consider density estimators based on the nearest neighbors method applied to discrete point distributions in spaces of arbitrary dimensionality. If the density is constant, the volume of a hypersphere centered at a random location is proportional to the expected number of points falling within the hypersphere radius. The distance to the N-th nearest neighbor alone is then a sufficient statistic for the density. In the non-uniform case the proportionality is distorted. We model this distortion by normalizing hypersphere volumes to the largest one and expressing the resulting distribution in terms of the Legendre polynomials. Using Monte Carlo simulations we show that this approach can be used to effectively address the trade-off between smoothing bias and estimator variance for sparsely sampled distributions.
C1 [Wozniak, P. R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Kruszewski, A.] Univ Warsaw Observ, PL-00478 Warsaw, Poland.
RP Wozniak, PR (reprint author), Los Alamos Natl Lab, Mail Stop B244, Los Alamos, NM 87545 USA.
EM wozniak@lanl.gov; ak@astrouw.edu.pl
FU LDRD program at LANL
FX This work was supported by the LDRD program at LANL.
NR 9
TC 1
Z9 1
U1 0
U2 1
PU COPERNICUS FOUNDATION POLISH ASTRONOMY
PI WARSAW
PA AL UJAZDOWSKIE 4, 00-478 WARSAW, POLAND
SN 0001-5237
J9 ACTA ASTRONOM
JI Acta Astron.
PY 2012
VL 62
IS 4
BP 409
EP 417
PG 9
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA 085LQ
UT WOS:000314616700006
ER
PT S
AU Sokolov, V
Auld, J
Hope, M
AF Sokolov, Vadim
Auld, Joshua
Hope, Michael
BE Shakshuki, E
Younas, M
TI A flexible framework for developing integrated models of transportation
systems using an agent-based approach
SO ANT 2012 AND MOBIWIS 2012
SE Procedia Computer Science
LA English
DT Proceedings Paper
CT 3rd International Conference on Ambient Systems, Networks and
Technologies (ANT) / 9th International Conference on Mobile Web
Information Systems (MobiWIS)
CY AUG 27-29, 2012
CL Niagara Falls, CANADA
DE integrated models; agent-based simulation; modeling framework
ID EQUILIBRIUM
AB Travel demand, traffic flow and land-use models are typically modeled in a decoupled way, i.e. each of the components is modeled separately assuming that parameters related to the other components are fixed. Moreover, the models are often developed by different groups for different contexts, requirements, etc. In this paper we present a prototype of a software framework which allows the user to develop an integrated simulation of a transportation system and also to link additional models to the new simulation in a standardized way. We use an agent-based approach as the basis of such a model. Integrated transportation system models allow model users to overcome the limitations of traditional aggregated, independent transportation models, particularly with respect to sensitivity to behavioral aspects of the travelers. Another requirement, which the software is to satisfy, is the interoperability of models developed in the new framework with legacy models. By interoperability we mean, that any component of the of the model can be interchanged by a legacy software and be used for the integrated simulation. This would allow disparate research groups working on modeling different aspects of a transportation model to plugnplay their models into the framework and test those as a part of an integrated model of an entire system, providing a benefit to researchers, modelers and institutional users of such models. (C) 2012 Published by Elsevier Ltd.
C1 [Sokolov, Vadim; Auld, Joshua; Hope, Michael] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Sokolov, V (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM vsokolov@anl.gov
NR 18
TC 1
Z9 1
U1 1
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1877-0509
J9 PROCEDIA COMPUT SCI
PY 2012
VL 10
BP 854
EP 859
DI 10.1016/j.procs.2012.06.111
PG 6
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BDQ15
UT WOS:000314400700105
ER
PT B
AU Zheng, PQ
Hobbs, BF
Koonce, JF
AF Zheng, Pearl Q.
Hobbs, Benjamin F.
Koonce, Joseph F.
BE Gardner, BD
Simmons, RT
TI The Economics of Dam Decommissioning for Ecosystem Restoration: Making
Informed Decisions to Remove Aging US Dams
SO AQUANOMICS: WATER MARKETS AND THE ENVIRONMENT
LA English
DT Article; Book Chapter
ID LAKE-ERIE; RIVER RESTORATION; WALLEYE
C1 [Hobbs, Benjamin F.] Johns Hopkins Univ, Dept Geog & Environm Engn, Baltimore, MD 21218 USA.
[Hobbs, Benjamin F.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Hobbs, Benjamin F.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Hobbs, Benjamin F.] Case Western Reserve Univ, Cleveland, OH 44106 USA.
[Koonce, Joseph F.] Case Western Reserve Univ, Dept Biol, Cleveland, OH 44106 USA.
RP Zheng, PQ (reprint author), ABT Associates Inc, Cambridge, MA 02138 USA.
NR 71
TC 0
Z9 0
U1 1
U2 10
PU TRANSACTION PUBLISHERS
PI PISCATAWAY
PA RUTGERS UNIVERSITY, DEPT 8010, 35 BERRUE CIRCLE, PISCATAWAY, NJ
08854-8042 USA
BN 978-1-4128-4698-1; 978-1-4128-4269-3
PY 2012
BP 247
EP 279
PG 33
WC Economics; Environmental Studies
SC Business & Economics; Environmental Sciences & Ecology
GA BDJ22
UT WOS:000313532800010
ER
PT J
AU Wu, CQ
Peng, ZG
AF Wu, Chunquan
Peng, Zhigang
TI Long-term change of site response after the M-w 9.0 Tohoku earthquake in
Japan
SO EARTH PLANETS AND SPACE
LA English
DT Article
DE Tohoku earthquake; earthquake ground motion; site effects; wave
propagation; soil nonlinearity; KiK-Net
ID STRONG GROUND MOTION; NONLINEAR SOIL RESPONSE; LOMA-PRIETA EARTHQUAKE;
TEMPORAL-CHANGES; PACIFIC COAST; SEISMIC VELOCITY; FAULT; AFTERSHOCKS;
PARKFIELD; FRICTION
AB The recent M-w 9.0 off the Pacific coast of Tohoku earthquake is the largest recorded earthquake in Japan's history. The Tohoku main shock and its aftershocks generated widespread strong shakings as large as similar to 3000 Gal along the east coast of Japan. Wu and Peng (2011) found clear drop of resonant frequency of up to 70% during the Tohoku main shock at 6 sites and correlation of resonance (peak) frequency and peak ground acceleration (PGA) during the main shock. Here we follow that study and systematically analyze long-term changes of material properties in the shallow crust from one year before to 5 months after the Tohoku main shock, using seismic data recorded by the Japanese Strong Motion Network KiK-Net. We use sliding window spectral ratios computed from a pair of surface and borehole stations to track the temporal changes in the site response of 6 sites. Our results show two stages of logarithmic recovery after a sharp drop of resonance frequency during the Tohoku main shock. The first stage is a rapid recovery within several hundred seconds to several hours, and the second stage is a slow recovery of more than five months. We also investigate whether the damage caused by the Tohoku main shock could make the near surface layers more susceptible to further damages, but we do not observe clear changes in susceptibility to further damage before and after the Tohoku main shock.
C1 [Wu, Chunquan] Los Alamos Natl Lab, Geophys Grp EES 17, Los Alamos, NM 87545 USA.
[Peng, Zhigang] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
RP Wu, CQ (reprint author), Los Alamos Natl Lab, Geophys Grp EES 17, POB 1663, Los Alamos, NM 87545 USA.
EM cwu@lanl.gov
RI Wu, Chunquan/B-8487-2012
FU National Science Foundation [EAR-0909310]; Southern California
Earthquake Center (SCEC); NSF [EAR-0106924]; USGS [02HQAG0008]
FX We thank National Research Institute for Earth Science and Disaster
Prevention (NIED) for providing the KiK-Net strong motion records of the
2011 Tohoku earthquake sequence. We thank Norm Sleep, an anonymous
reviewer, and the editor Masanao Shinohara for their thorough review of
the manuscript and useful comments. This work is partially supported by
National Science Foundation (EAR-0909310) and Southern California
Earthquake Center (SCEC). SCEC is funded by NSF Cooperative Agreement
EAR-0106924 and USGS Cooperative Agreement 02HQAG0008.
NR 33
TC 4
Z9 4
U1 2
U2 8
PU TERRA SCIENTIFIC PUBL CO
PI TOKYO
PA 2003 SANSEI JIYUGAOKA HAIMU, 5-27-19 OKUSAWA, SETAGAYA-KU, TOKYO,
158-0083, JAPAN
SN 1343-8832
J9 EARTH PLANETS SPACE
JI Earth Planets Space
PY 2012
VL 64
IS 12
BP 1259
EP 1266
DI 10.5047/eps.2012.05.012
PG 8
WC Geosciences, Multidisciplinary
SC Geology
GA 084IV
UT WOS:000314533200021
ER
PT J
AU Miller, CL
Liang, LY
Gu, BH
AF Miller, Carrie L.
Liang, Liyuan
Gu, Baohua
TI Competitive ligand exchange reveals time dependant changes in the
reactivity of Hg-dissolved organic matter complexes
SO ENVIRONMENTAL CHEMISTRY
LA English
DT Article
DE complexation; kinetics; organic ligands; reactive mercury
ID WASTE-WATER EFFLUENT; MERCURY COMPLEXATION; FLORIDA EVERGLADES;
ELEMENTAL MERCURY; HUMIC SUBSTANCES; REDUCED SULFUR; NATURAL-WATERS;
STRONG HG(II); OAK-RIDGE; METHYLMERCURY
AB Mercury interactions with dissolved organic matter (DOM) are important in aquatic environments but the kinetics of Hg binding to and repartitioning within the DOM remain poorly understood. We examined changes in Hg-DOM complexes using glutathione (GSH) titrations, coupled with stannous-reducible Hg measurements during Hg equilibration with DOM. In laboratory prepared DOM solutions and in water from a Hg-contaminated creek, a fraction of the Hg present as Hg-DOM complexes did not react to GSH addition. This unreactive Hg fraction increased with time from 13% at 1 h to 74% after 48 h of equilibration with a Suwannee River DOM. In East Fork Poplar Creek water in Oak Ridge, Tennessee, similar to 58% of the DOM-complexed Hg was unreactive with GSH 1 h after the sample was collected. This time-dependent increase in unreactive Hg suggests that Hg forms stronger complexes with DOM over time. Alternatively the DOM-complexed Hg may become more sterically protected from the ligand exchange reactions, as the binding environment changes within the DOM over time. These results have important implications to understanding Hg transformations in the natural environment, particularly in contaminated aquatic systems due to non-equilibrium interactions between Hg and DOM.
C1 [Miller, Carrie L.; Liang, Liyuan; Gu, Baohua] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA.
RP Miller, CL (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA.
EM millercl@ornl.gov
RI Miller, Carrie/B-8943-2012; Liang, Liyuan/O-7213-2014; Gu,
Baohua/B-9511-2012
OI Liang, Liyuan/0000-0003-1338-0324; Gu, Baohua/0000-0002-7299-2956
FU Office of the Biological and Environmental Research, Office of Science,
US Department of Energy (DOE); US DOE [DE-AC05-00OR22725]
FX This research is part of the Mercury Science Focus Area Program at Oak
Ridge National Laboratory (ORNL) supported by the Office of the
Biological and Environmental Research, Office of Science, US Department
of Energy (DOE). ORNL is managed by UT-Battelle LLC for US DOE under
contract DE-AC05-00OR22725.
NR 40
TC 6
Z9 7
U1 1
U2 44
PU CSIRO PUBLISHING
PI COLLINGWOOD
PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA
SN 1448-2517
J9 ENVIRON CHEM
JI Environ. Chem.
PY 2012
VL 9
IS 6
BP 495
EP 501
DI 10.1071/EN12096
PG 7
WC Chemistry, Analytical; Environmental Sciences
SC Chemistry; Environmental Sciences & Ecology
GA 083JF
UT WOS:000314458800001
ER
PT J
AU Michaelides, M
Thanos, PK
Volkow, ND
Wang, GJ
AF Michaelides, Michael
Thanos, Panayotis K.
Volkow, Nora D.
Wang, Gene-Jack
TI Translational Neuroimaging in Drug Addiction and Obesity
SO ILAR JOURNAL
LA English
DT Article
DE addiction; dopamine; functional magnetic resonance imaging (fMRI);
leptin; neuroimaging; obesity; positron emission tomography (PET);
rodent model
ID POSITRON-EMISSION-TOMOGRAPHY; BRAIN GLUCOSE-METABOLISM; COCAINE
ADDICTION; IN-VIVO; FUNCTIONAL MRI; RAT-BRAIN; CORTICAL ACTIVATION;
ANTERIOR CINGULATE; FOOD RESTRICTION; OPIATE ADDICTS
AB The use of translational noninvasive neuroimaging has revealed that drug addiction and obesity share striking similarities in functional impairment in discrete brain regions and neurotransmitter circuits. Imaging experiments in both humans and rodents (using complementary experimental designs) show similar abnormalities in brain glucose metabolism in the prefrontal cortex (involved in inhibitory control) and hippocampus (memory) as well as impairments in dopamine signaling in the striatum (involved in food and drug reward, goal orientation, motivation, and habit formation). In both species, many of these observations have been obtained through concurrent and parallel monitoring of both brain activity and behavioral manifestations during drug administration, food sensory (visual, olfactory) stimulation, and craving. This review aims to show that noninvasive brain imaging strategies such as small animal positron emission tomography offer significant potential and promise for modeling motivational disorders such as drug addiction and obesity in humans. Rodent addiction models will prove valuable for understanding brain responses to drug cues and will help guide treatment, especially in relapse situations triggered by exposure to conditioned drug cues.
C1 [Michaelides, Michael; Thanos, Panayotis K.; Wang, Gene-Jack] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA.
[Michaelides, Michael] Mt Sinai Sch Med, Pharmacol & Syst Therapeut Dept, New York, NY USA.
[Volkow, Nora D.] NIDA, NIH, Bethesda, MD 20892 USA.
RP Wang, GJ (reprint author), Brookhaven Natl Lab, Dept Med, 30 Bell Ave, Upton, NY 11973 USA.
EM gjwang@bnl.gov
RI Michaelides, Michael/K-4736-2013
OI Michaelides, Michael/0000-0003-0398-4917
FU National Institutes of Health National Institute on Alcohol Abuse and
Alcoholism [AA11034, AA07574, AA07611]; National Institute on Drug Abuse
(NIDA) [DA006278]; NIDA Postdoctoral Training Program at Mount Sinai
School of Medicine [DA007135]
FX This work was supported by the National Institutes of Health National
Institute on Alcohol Abuse and Alcoholism (AA11034, AA07574, AA07611)
and the National Institute on Drug Abuse (NIDA; DA006278). The NIDA
Postdoctoral Training Program at Mount Sinai School of Medicine also
provided support (DA007135, Michaelides).
NR 57
TC 9
Z9 9
U1 1
U2 12
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1084-2020
J9 ILAR J
JI ILAR J.
PY 2012
VL 53
IS 1
BP 59
EP 68
DI 10.1093/ilar.53.1.59
PG 10
WC Veterinary Sciences
SC Veterinary Sciences
GA 084NP
UT WOS:000314546600015
PM 23520600
ER
PT S
AU Lu, C
Sambasivan, S
Kapahi, A
Udaykumar, HS
AF Lu, C.
Sambasivan, S.
Kapahi, A.
Udaykumar, H. S.
BE Cazacu, O
TI Multi-scale modeling of shock interaction with a cloud of particles
using an artificial neural network for model representation
SO IUTAM SYMPOSIUM ON LINKING SCALES IN COMPUTATIONS: FROM MICROSTRUCTURE
TO MACRO-SCALE PROPERTIES
SE Procedia IUTAM
LA English
DT Proceedings Paper
CT IUTAM Symposium on Linking Scales in Computation - From Microstructure
to Macroscopic Properties
CY MAY 17-19, 2011
CL Pensacola, FL
SP Int Union Theoret & Appl Mech (IUTAM)
DE Multimaterial Flows; Shock Waves; Multi-scale modeling; Artificial
Neural Networks; Inter-scale coupling; Levelsets; Cartesian Grid; Sharp
Interfaces
ID GHOST FLUID METHOD; TRANSPORT PHENOMENA; NUMERICAL-ANALYSIS; WAVE
INTERACTION; UNSTEADY DRAG; EQUATION-FREE; POROUS-MEDIA; SIMULATION;
CHANNEL; SPHERE
AB The evolution of a solid-gas mixture under the influence of a shock wave depends on particle-particle and particle-shock interactions; i.e. the macroscopic distribution of particles is determined by physics at the particle (micro)-scale. This work seeks to simulate the macro-scale dynamics of gas-solid mixtures by employing information accumulated from direct numerical simulations (DNS) at the micro-(i.e., particle) scale. Data on the forces experienced by particles in a cloud are collected from DNS using a compressible Eulerian solver and provided to an artificial neural network (ANN); the simulations are performed for a range of control parameters, such as Mach number, particle radii, particle-fluid density ratio, position, and volume fraction. Beginning with a simple single stationary particle case and progressing to moving particle laden clouds, the ANN is trained to evolve and reproduce correlations between the control parameters and particle dynamics. The trained ANN is then used in computing the macro-scale flow behavior in a model of shocked dusty gas advection. The model predicts particle motion and other macro-scale phenomena in agreement with experimental observations. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of Dr. Oana Cazacu.
C1 [Lu, C.; Kapahi, A.; Udaykumar, H. S.] Univ Iowa, Dept Mech & Ind Engn, Iowa City, IA 52242 USA.
[Sambasivan, S.] Los Alamos Natl Lab, Div Theoret, Grp T 5, MS B284, Los Alamos, NM 87545 USA.
RP Lu, C (reprint author), Univ Iowa, Dept Mech & Ind Engn, Iowa City, IA 52242 USA.
FU Air Force Office of Scientific Research; USAF; Computational Mathematics
Program [FA9550- 09- 1- 0146]; Computational Mechanics Branch
FX This work was sponsored ( in part) by the Air Force Office of Scientific
Research, USAF, Computational Mathematics Program ( Program Manager: Dr.
Fariba Fahroo) under grant/ contract number FA9550- 09- 1- 0146 and ( in
part) by the Computational Mechanics Branch ( AFRL- RWPC, Eglin AFB, FL,
Program Manager: Dr. Michael E. Nixon).
NR 54
TC 6
Z9 6
U1 2
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 2210-9838
J9 PROC IUTAM
PY 2012
VL 3
BP 25
EP 52
DI 10.1016/j.piutam.2012.03.003
PG 28
WC Mechanics; Physics, Applied
SC Mechanics; Physics
GA BDQ54
UT WOS:000314463900003
ER
PT S
AU Lebensohn, RA
Idiart, MI
Castaneda, PP
AF Lebensohn, Ricardo A.
Idiart, Martin I.
Ponte Castaneda, Pedro
BE Cazacu, O
TI Modeling microstructural effects in dilatational plasticity of
polycrystalline materials
SO IUTAM SYMPOSIUM ON LINKING SCALES IN COMPUTATIONS: FROM MICROSTRUCTURE
TO MACRO-SCALE PROPERTIES
SE Procedia IUTAM
LA English
DT Proceedings Paper
CT IUTAM Symposium on Linking Scales in Computation - From Microstructure
to Macroscopic Properties
CY MAY 17-19, 2011
CL Pensacola, FL
SP Int Union Theoret & Appl Mech (IUTAM)
DE polycrystals; porous materials; dilatational plasticity; homogenization;
microstructural effects
ID EFFECTIVE MECHANICAL-PROPERTIES; LINEAR COMPARISON BOUNDS; NONLINEAR
COMPOSITES; FIELD FLUCTUATIONS; VISCOPLASTIC POLYCRYSTALS; EFFECTIVE
BEHAVIOR; YIELD CRITERIA; POROUS-MEDIA; APPROXIMATE MODELS; ANISOTROPIC
PHASES
AB In a recent paper [1] we presented a new constitutive model for the viscoplastic response of polycrystalline aggregates accounting for local anisotropy induced by crystal plasticity and dilatational effects associated with the presence of intergranular cavities. In this contribution we provide a summary of our findings, as well as previously unpublished details of the numerical algorithm underlying this novel formulation. The formulation is based on homogenization and captures microstructural effects on the dilatational plastic behavior of polycrystalline materials. These effects are relevant to many engineering problems in which the presence of cavities embedded in a heterogeneous and anisotropic polycrystalline matrix must be accounted for, and for which standard polycrystalline models of incompressible plasticity, or dilatational plasticity formulations for voided materials with uniform properties of the matrix, have been proven to be insufficient. The present approach makes use of variational linear-comparison homogenization methods to develop constitutive models simultaneously accounting for texture of the matrix, porosity and average pore shape and orientation. The predictions of the models are compared with full-field numerical simulations based on fast Fourier transforms to study the influence of different microstructural features (e.g. overall porosity, single-crystal anisotropy, etc.) and triaxiality on the dilatational viscoplastic behavior of voided fcc polycrystals. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of Dr. Oana Cazacu.
C1 [Lebensohn, Ricardo A.] Los Alamos Natl Lab, Div Mat Sci & Technol, MS G755, Los Alamos, NM 87545 USA.
[Idiart, Martin I.] Univ Nacl Plata, Fac Ingn, Dept Aeronaut, RA-B1900TAG La Plata, Argentina.
[Idiart, Martin I.] CCT La Plata, Consejo Nacl Investigac Cient ficas Tecn CONICET, RA-B1904CMC La Plata, Argentina.
[Ponte Castaneda, Pedro] Univ Pennsylvania, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA.
[Ponte Castaneda, Pedro] IMDEA Mat Inst, E-28040 Madrid, Spain.
RP Lebensohn, RA (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, MS G755, Los Alamos, NM 87545 USA.
EM lebenso@lanl.gov
RI Lebensohn, Ricardo/A-2494-2008
OI Lebensohn, Ricardo/0000-0002-3152-9105
FU DoD/ DOE Munitions Technology Program [LDRD-DR 2010026]; LANL [LDRD-DR
2010026, 84212-001-10]
FX RAL work supported by Joint DoD/ DOE Munitions Technology Program and
LANL LDRD-DR 2010026 Program. The work of MII and PPC was partially
supported by LDRD-DR 2010026 through LANL subcontract number
84212-001-10.
NR 39
TC 4
Z9 4
U1 0
U2 3
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 2210-9838
J9 PROC IUTAM
PY 2012
VL 3
BP 314
EP 330
DI 10.1016/j.piutam.2012.03.020
PG 17
WC Mechanics; Physics, Applied
SC Mechanics; Physics
GA BDQ54
UT WOS:000314463900020
ER
PT J
AU Lasorsa, BK
Gill, GA
Horvat, M
AF Lasorsa, Brenda K.
Gill, Gary A.
Horvat, Milena
BE Bank, MS
TI Analytical Methods for Measuring Mercury in Water, Sediment, and Biota
SO MERCURY IN THE ENVIRONMENT: PATTERN AND PROCESS
LA English
DT Article; Book Chapter
ID PLASMA-MASS SPECTROMETRY; ATOMIC-ABSORPTION-SPECTROMETRY;
ANODIC-STRIPPING VOLTAMMETRY; PERFORMANCE LIQUID-CHROMATOGRAPHY;
DISSOLVED ORGANIC-MATTER; SOLID-PHASE EXTRACTION; CAPILLARY
GAS-CHROMATOGRAPHY; 2-STAGE GOLD AMALGAMATION; FRANCISCO BAY ESTUARY;
HPLC-ICP-MS
C1 [Lasorsa, Brenda K.; Gill, Gary A.] Pacific NW Natl Lab, Sequim, WA USA.
[Horvat, Milena] Jozef Stefan Inst, Ljubljana, Slovenia.
RP Lasorsa, BK (reprint author), Pacific NW Natl Lab, Sequim, WA USA.
EM brenda.lasorsa@pnl.gov; gary.gill@pnl.gov; milena.horvat@ijs.si
NR 185
TC 4
Z9 4
U1 4
U2 8
PU UNIV CALIFORNIA PRESS
PI BERKELEY
PA 2120 BERKELEY WAY, BERKELEY, CA 94720 USA
BN 978-0-520-95139-6
PY 2012
BP 27
EP 54
D2 10.1525/california/9780520271630.001.0001
PG 28
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA BDH48
UT WOS:000313265400005
ER
PT J
AU Anderson, I
Munk, C
Lapidus, A
Nolan, M
Lucas, S
Tice, H
Del Rio, TG
Cheng, JF
Han, C
Tapia, R
Goodwin, L
Pitluck, S
Liolios, K
Mavromatis, K
Pagani, I
Mikhailova, N
Pati, A
Chen, A
Palaniappan, K
Land, M
Rohde, M
Tindall, BJ
Goker, M
Detter, JC
Woyke, T
Bristow, J
Eisen, JA
Markowitz, V
Hugenholtz, P
Kyrpides, NC
Klenk, HP
Ivanova, N
AF Anderson, Iain
Munk, Christine
Lapidus, Alla
Nolan, Matt
Lucas, Susan
Tice, Hope
Del Rio, Tijana Glavina
Cheng, Jan-Fang
Han, Cliff
Tapia, Roxanne
Goodwin, Lynne
Pitluck, Sam
Liolios, Konstantinos
Mavromatis, Konstantinos
Pagani, Ioanna
Mikhailova, Natalia
Pati, Amrita
Chen, Amy
Palaniappan, Krishna
Land, Miriam
Rohde, Manfred
Tindall, Brian J.
Goeker, Markus
Detter, John C.
Woyke, Tanja
Bristow, James
Eisen, Jonathan A.
Markowitz, Victor
Hugenholtz, Philip
Kyrpides, Nikos C.
Klenk, Hans-Peter
Ivanova, Natalia
TI Genome sequence of the flexirubin-pigmented soil bacterium Niabella soli
type strain (JS13-8(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE aerobic; non-motile; Gram-negative; mesophilic; chemoorganotrophic;
glycosyl hydrolases; soil; Chitinophagaceae; GEBA
ID SP NOV.; GEN. NOV.; BACTEROIDES-THETAIOTAOMICRON; RNA GENES; DATABASE;
ARCHAEA; CHITINOPHAGA; PREDICTION; ALGORITHM; GRAPHS
AB Niabella soli Weon et al. 2008 is a member of the Chitinophagaceae, a family within the class Sphingobacteriia that is poorly characterized at the genome level, thus far. N. soli strain JS13-8(T) is of interest for its ability to produce a variety of glycosyl hydrolases. The genome of N. soli strain JS13-8(T) is only the second genome sequence of a type strain from the family Chitinophagaceae to be published, and the first one from the genus Niabella. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 4,697,343 bp long chromosome with its 3,931 protein-coding and 49 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
C1 [Anderson, Iain; Munk, Christine; Lapidus, Alla; Nolan, Matt; Lucas, Susan; Tice, Hope; Del Rio, Tijana Glavina; Cheng, Jan-Fang; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne; Pitluck, Sam; Liolios, Konstantinos; Mavromatis, Konstantinos; Pagani, Ioanna; Mikhailova, Natalia; Pati, Amrita; Land, Miriam; Detter, John C.; Woyke, Tanja; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Ivanova, Natalia] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Munk, Christine; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
[Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
[Tindall, Brian J.; Goeker, Markus; Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
[Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA.
[Hugenholtz, Philip] Univ Queensland, Australian Ctr Ecogen, Sch Chem & Mol Biosci, Brisbane, Qld, Australia.
RP Klenk, HP (reprint author), Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
EM hpk@dsmz.de
RI Kyrpides, Nikos/A-6305-2014; Hugenholtz, Philip/G-9608-2011; Lapidus,
Alla/I-4348-2013; Land, Miriam/A-6200-2011
OI Kyrpides, Nikos/0000-0002-6131-0462; Eisen, Jonathan
A./0000-0002-0159-2197; Lapidus, Alla/0000-0003-0427-8731; Land,
Miriam/0000-0001-7102-0031
FU US Department of Energy Office of Science, Biological and Environmental
Research Program; University of California, Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396];
UT-Battelle; Oak Ridge National Laboratory [DE-AC05-00OR22725]; German
Research Foundation (DFG) [INST 599/1-2]
FX We would like to gratefully acknowledge the help of Regine Fahnrich for
growing N. soli cultures and Evelyne-Marie Brambilla for DNA extraction
and quality control (both at DSMZ). This work was performed under the
auspices of the US Department of Energy Office of Science, Biological
and Environmental Research Program, and by the University of California,
Lawrence Berkeley National Laboratory under contract No.
DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract
No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract
No. DE-AC02-06NA25396, UT-Battelle and Oak Ridge National Laboratory
under contract DE-AC05-00OR22725, as well as German Research Foundation
(DFG) INST 599/1-2.
NR 47
TC 0
Z9 0
U1 2
U2 13
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 2
BP 210
EP 220
DI 10.4056/sigs.3117229
PG 11
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QC
UT WOS:000314406200003
PM 23408178
ER
PT J
AU Spring, S
Visser, M
Lu, M
Copeland, A
Lapidus, A
Lucas, S
Cheng, JF
Han, C
Tapia, R
Goodwin, LA
Pitluck, S
Ivanova, N
Land, M
Hauser, L
Larimer, F
Rohde, M
Goker, M
Detter, JC
Kyrpides, NC
Woyke, T
Schaap, PJ
Plugge, CM
Muyzer, G
Kuever, J
Pereira, IAC
Parshina, SN
Bernier-Latmani, R
Stams, AJM
Klenk, HP
AF Spring, Stefan
Visser, Michael
Lu, Megan
Copeland, Alex
Lapidus, Alla
Lucas, Susan
Cheng, Jan-Fang
Han, Cliff
Tapia, Roxanne
Goodwin, Lynne A.
Pitluck, Sam
Ivanova, Natalia
Land, Miriam
Hauser, Loren
Larimer, Frank
Rohde, Manfred
Goeker, Markus
Detter, John C.
Kyrpides, Nikos C.
Woyke, Tanja
Schaap, Peter J.
Plugge, Caroline M.
Muyzer, Gerard
Kuever, Jan
Pereira, Ines A. C.
Parshina, Sofiya N.
Bernier-Latmani, Rizlan
Stams, Alfons J. M.
Klenk, Hans-Peter
TI Complete genome sequence of the sulfate-reducing firmicute
Desulfotomaculum ruminis type strain (DLT)
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE anaerobic; motile; sporulating; mesophilic; sulfate-reducer; hydrogen
sulfide; incomplete oxidizer; mixotrophic; CSP 2009; Peptococcaceae;
Clostridiales
ID BACTERIAL NAMES; CLASSIFICATION; HYDROGENASES; DATABASE; ARCHAEA;
SYSTEM; SITE; TOOL
AB Desulfotomaculum ruminis Campbell and Postgate 1965 is a member of the large genus Desulfotomaculum which contains 30 species and is contained in the family Peptococcaceae. This species is of interest because it represents one of the few sulfate-reducing bacteria that have been isolated from the rumen. Here we describe the features of D. ruminis together with the complete genome sequence and annotation. The 3,969,014 bp long chromosome with a total of 3,901 protein-coding and 85 RNA genes is the second completed genome sequence of a type strain of the genus Desulfotomaculum to be published, and was sequenced as part of the DOE Joint Genome Institute Community Sequencing Program 2009.
C1 [Spring, Stefan; Goeker, Markus; Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
[Visser, Michael; Plugge, Caroline M.; Stams, Alfons J. M.] Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
[Lu, Megan; Copeland, Alex; Lapidus, Alla; Lucas, Susan; Cheng, Jan-Fang; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Pitluck, Sam; Ivanova, Natalia; Land, Miriam; Hauser, Loren; Larimer, Frank; Detter, John C.; Kyrpides, Nikos C.; Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Lu, Megan; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Land, Miriam; Hauser, Loren; Larimer, Frank] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
[Schaap, Peter J.] Wageningen Univ, Lab Syst & Synthet Biol, NL-6700 AP Wageningen, Netherlands.
[Muyzer, Gerard] Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Dept Aquat Microbiol, Amsterdam, Netherlands.
[Kuever, Jan] Bremen Inst Mat Testing, Dept Microbiol, Bremen, Germany.
[Pereira, Ines A. C.] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-2780156 Oeiras, Portugal.
[Parshina, Sofiya N.] Russian Acad Sci, Wingradsky Inst Microbiol, Moscow, Russia.
[Bernier-Latmani, Rizlan] Ecole Polytech Fed Lausanne, Lausanne, Switzerland.
RP Stams, AJM (reprint author), Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
RI Kyrpides, Nikos/A-6305-2014; Stams, Alfons/C-8167-2014; Bernier-Latmani,
Rizlan/E-4398-2011; Pereira, Ines/C-2748-2009; Lapidus,
Alla/I-4348-2013; Spring, Stefan/N-6933-2013; Land, Miriam/A-6200-2011
OI Kyrpides, Nikos/0000-0002-6131-0462; Stams, Alfons/0000-0001-7840-6500;
Bernier-Latmani, Rizlan/0000-0001-6547-722X; Muyzer,
Gerard/0000-0002-2422-0732; Pereira, Ines/0000-0003-3283-4520; Lapidus,
Alla/0000-0003-0427-8731; Spring, Stefan/0000-0001-6247-0938; Land,
Miriam/0000-0001-7102-0031
FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
Netherlands Science Foundation (NWO) [CW-TOP 700.55.343, ALW 819.02.014]
FX We would like to gratefully acknowledge the help of Maren Schroder for
growing D. ruminis cultures and Susanne Schneider for DNA extraction
(both at DSMZ). The work conducted by the U.S. Department of Energy
Joint Genome Institute was supported by the Office of Science of the
U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and was
also supported by grants CW-TOP 700.55.343 and ALW 819.02.014 of the
Netherlands Science Foundation (NWO).
NR 47
TC 7
Z9 7
U1 2
U2 23
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 2
BP 304
EP 319
DI 10.4056/sigs.3226659
PG 16
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QC
UT WOS:000314406200011
PM 23408247
ER
PT J
AU Anderson, I
Chertkov, O
Chen, A
Saunders, E
Lapidus, A
Nolan, M
Lucas, S
Hammon, N
Deshpande, S
Cheng, JF
Han, C
Tapia, R
Goodwin, LA
Pitluck, S
Liolios, K
Pagani, I
Ivanova, N
Mikhailova, N
Pati, A
Palaniappan, K
Land, M
Pan, CL
Rohde, M
Pukall, R
Goker, M
Detter, JC
Woyke, T
Bristow, J
Eisen, JA
Markowitz, V
Hugenholtz, P
Kyrpides, NC
Klenk, HP
Mavromatis, K
AF Anderson, Iain
Chertkov, Olga
Chen, Amy
Saunders, Elizabeth
Lapidus, Alla
Nolan, Matt
Lucas, Susan
Hammon, Nancy
Deshpande, Shweta
Cheng, Jan-Fang
Han, Cliff
Tapia, Roxanne
Goodwin, Lynne A.
Pitluck, Sam
Liolios, Konstantinos
Pagani, Ioanna
Ivanova, Natalia
Mikhailova, Natalia
Pati, Amrita
Palaniappan, Krishna
Land, Miriam
Pan, Chongle
Rohde, Manfred
Pukall, Ruediger
Goeker, Markus
Detter, John C.
Woyke, Tanja
Bristow, James
Eisen, Jonathan A.
Markowitz, Victor
Hugenholtz, Philip
Kyrpides, Nikos C.
Klenk, Hans-Peter
Mavromatis, Konstantinos
TI Complete genome sequence of the moderately thermophilic
mineral-sulfide-oxidizing firmicute Sulfobacillus acidophilus type
strain (NAL(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE aerobic; motile; Gram-positive; acidophilic; moderately thermophilic;
sulfide- and iron-oxidizing; biomining; autotrophic; mixotrophic; soil;
insertis sedis; Clostridiales; GEBA
ID BACTERIAL NAMES; ARCHAEA; TOOL; ALGORITHM; DATABASE; SYSTEM; GRAPHS; 16S
AB Sulfobacillus acidophilus Norris et al. 1996 is a member of the genus Sulfobacillus which comprises five species of the order Clostridiales. Sulfobacillus species are of interest for comparison to other sulfur and iron oxidizers and also have biomining applications. This is the first completed genome sequence of a type strain of the genus Sulfobacillus, and the second published genome of a member of the species S. acidophilus. The genome, which consists of one chromosome and one plasmid with a total size of 3,557,831 bp harbors 3,626 protein-coding and 69 RNA genes, and is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
C1 [Anderson, Iain; Chertkov, Olga; Saunders, Elizabeth; Lapidus, Alla; Nolan, Matt; Lucas, Susan; Hammon, Nancy; Deshpande, Shweta; Cheng, Jan-Fang; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Pitluck, Sam; Liolios, Konstantinos; Pagani, Ioanna; Ivanova, Natalia; Mikhailova, Natalia; Pati, Amrita; Land, Miriam; Pan, Chongle; Detter, John C.; Woyke, Tanja; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Mavromatis, Konstantinos] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Chertkov, Olga; Saunders, Elizabeth; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
[Land, Miriam; Pan, Chongle] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
[Pukall, Ruediger; Goeker, Markus; Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
[Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA.
[Hugenholtz, Philip] Univ Queensland, Australian Ctr Ecogen, Sch Chem & Mol Biosci, Brisbane, Qld, Australia.
RP Klenk, HP (reprint author), Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
EM hpk@dsmz.de
RI Hugenholtz, Philip/G-9608-2011; Lapidus, Alla/I-4348-2013; Land,
Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014;
OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031;
Kyrpides, Nikos/0000-0002-6131-0462; Eisen, Jonathan
A./0000-0002-0159-2197
FU US Department of Energy Office of Science, Biological and Environmental
Research Program; University of California, Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396];
UT-Battelle and Oak Ridge National Laboratory [DE-AC05-00OR22725];
German Research Foundation (DFG) [INST 599/1-2]
FX We would like to gratefully acknowledge the help of Gabriele
Gehrich-Schroter for growing S. acidophilus cultures and Susanne
Schneider for DNA extraction (both at DSMZ). This work was performed
under the auspices of the US Department of Energy Office of Science,
Biological and Environmental Research Program, and by the University of
California, Lawrence Berkeley National Laboratory under contract No.
DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract
No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract
No. DE-AC02-06NA25396, UT-Battelle and Oak Ridge National Laboratory
under contract DE-AC05-00OR22725, as well as German Research Foundation
(DFG) INST 599/1-2.
NR 48
TC 4
Z9 4
U1 4
U2 10
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 6
IS 3
BP 293
EP 303
DI 10.4056/sigs.2736042
PG 11
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082PW
UT WOS:000314405400001
ER
PT J
AU Jiang, K
Sanseverino, J
Chauhan, A
Lucas, S
Copeland, A
Lapidus, A
Del Rio, TG
Dalin, E
Tice, H
Bruce, D
Goodwin, L
Pitluck, S
Sims, D
Brettin, T
Detter, JC
Han, C
Chang, YJ
Larimer, F
Land, M
Hauser, L
Kyrpides, NC
Mikhailova, N
Moser, S
Jegier, P
Close, D
DeBruyn, JM
Wang, Y
Layton, AC
Allen, MS
Sayler, GS
AF Jiang, Ke
Sanseverino, John
Chauhan, Archana
Lucas, Susan
Copeland, Alex
Lapidus, Alla
Del Rio, Tijana Glavina
Dalin, Eileen
Tice, Hope
Bruce, David
Goodwin, Lynne
Pitluck, Sam
Sims, David
Brettin, Thomas
Detter, John C.
Han, Cliff
Chang, Y. J.
Larimer, Frank
Land, Miriam
Hauser, Loren
Kyrpides, Nikos C.
Mikhailova, Natalia
Moser, Scott
Jegier, Patricia
Close, Dan
DeBruyn, Jennifer M.
Wang, Ying
Layton, Alice C.
Allen, Michael S.
Sayler, Gary S.
TI Complete genome sequence of Thauera aminoaromatica strain MZ1T
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Thauera aminoaromatica; MZ1T; genome
ID DENITRIFYING BACTERIUM; ESCHERICHIA-COLI; BETA-SUBCLASS; RNA GENES;
SP-NOV; PROTEOBACTERIA; IDENTIFICATION; DEGRADATION; DEFINITION;
AROMATICA
AB Thauera aminoaromatica strain MZ1T, an isolate belonging to genus Thauera, of the family Rhodocyclaceae and the class the Betaproteobacteria, has been characterized for its ability to produce abundant exopolysaccharide and degrade various aromatic compounds with nitrate as an electron acceptor. These properties, if fully understood at the genome-sequence level, can aid in environmental processing of organic matter in anaerobic cycles by short-circuiting a central anaerobic metabolite, acetate, from microbiological conversion to methane, a critical greenhouse gas. Strain MZ1T is the first strain from the genus Thauera with a completely sequenced genome. The 4,496,212 bp chromosome and 78,374 bp plasmid contain 4,071 protein-coding and 71 RNA genes, and were sequenced as part of the DOE Community Sequencing Program CSP_776774.
C1 [Jiang, Ke; Sanseverino, John; Chauhan, Archana; Moser, Scott; Jegier, Patricia; Close, Dan; Wang, Ying; Layton, Alice C.; Sayler, Gary S.] Univ Tennessee, Ctr Environm Biotechnol, Knoxville, TN 37932 USA.
[Lucas, Susan; Copeland, Alex; Lapidus, Alla; Del Rio, Tijana Glavina; Dalin, Eileen; Tice, Hope; Bruce, David; Goodwin, Lynne; Pitluck, Sam; Brettin, Thomas; Detter, John C.; Kyrpides, Nikos C.; Mikhailova, Natalia] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Sims, David; Han, Cliff] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Chang, Y. J.; Larimer, Frank; Land, Miriam; Hauser, Loren] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[DeBruyn, Jennifer M.] Univ Tennessee, Dept Biosyst Engn & Soil Sci, Knoxville, TN USA.
[Allen, Michael S.] Univ N Texas, Dept Biol Sci, Denton, TX 76203 USA.
RP Sayler, GS (reprint author), Univ Tennessee, Ctr Environm Biotechnol, Knoxville, TN 37932 USA.
EM sayler@utk.edu
RI DeBruyn, Jennifer/A-8813-2010; Close, Dan/A-4417-2012; Lapidus,
Alla/I-4348-2013; Land, Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014;
OI DeBruyn, Jennifer/0000-0002-2993-4144; Lapidus,
Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031; Kyrpides,
Nikos/0000-0002-6131-0462; Sanseverino, John/0000-0002-2693-9521
FU Center for Environmental Biotechnology; University of Tennessee Waste
Management Research and Education Institute; Office of Science, Office
of Biological and Environmental Research, Life Sciences Division, U.S.
Department of Energy [DE-AC02-05CH11231]
FX This work was supported by the Center for Environmental Biotechnology
and the University of Tennessee Waste Management Research and Education
Institute and by the Director, Office of Science, Office of Biological
and Environmental Research, Life Sciences Division, U.S. Department of
Energy under Contract No. DE-AC02-05CH11231. We would like to thank the
Community Sequencing Program and the Joint Genome Institute for
sequencing and annotation of the MZ1T genome. We would like to thank Dr.
Georg Fuchs at University of Freiburg for generously providing strain S2
and B4P.
NR 34
TC 14
Z9 14
U1 5
U2 16
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 6
IS 3
BP 325
EP 335
DI 10.4056/sigs.2696029
PG 11
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082PW
UT WOS:000314405400004
PM 23407619
ER
PT J
AU Mead, DA
Lucas, S
Copeland, A
Lapidus, A
Cheng, JF
Bruce, DC
Goodwin, LA
Pitluck, S
Chertkov, O
Zhang, XJ
Detter, JC
Han, CS
Tapia, R
Land, M
Hauser, LJ
Chang, YJ
Kyrpides, NC
Ivanova, NN
Ovchinnikova, G
Woyke, T
Brumm, C
Hochstein, R
Schoenfeld, T
Brumm, P
AF Mead, David A.
Lucas, Susan
Copeland, Alex
Lapidus, Alla
Cheng, Jan-Feng
Bruce, David C.
Goodwin, Lynne A.
Pitluck, Sam
Chertkov, Olga
Zhang, Xiaojing
Detter, John C.
Han, Cliff S.
Tapia, Roxanne
Land, Miriam
Hauser, Loren J.
Chang, Yun-juan
Kyrpides, Nikos C.
Ivanova, Natalia N.
Ovchinnikova, Galina
Woyke, Tanja
Brumm, Catherine
Hochstein, Rebecca
Schoenfeld, Thomas
Brumm, Phillip
TI Complete Genome Sequence of Paenibacillus strain Y4.12MC10, a Novel
Paenibacillus lautus strain Isolated from Obsidian Hot Spring in
Yellowstone National Park
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Geobacillus sp Y412MC10; Paenibacillus sp Y412MC10; Obsidian Hot Spring
ID GENUS PAENIBACILLUS; THERMUS-AQUATICUS; SP NOV.; EXTREME THERMOPHILE;
RNA GENES; SP. NOV.; BACTERIA; PROPOSAL; IDENTIFICATION; RHIZOSPHERE
AB Paenibacillus sp. Y412MC10 was one of a number of organisms isolated from Obsidian Hot Spring, Yellowstone National Park, Montana, USA under permit from the National Park Service. The isolate was initially classified as a Geobacillus sp. Y412MC10 based on its isolation conditions and similarity to other organisms isolated from hot springs at Yellowstone National Park. Comparison of 16 S rRNA sequences within the Bacillales indicated that Geobacillus sp. Y412MC10 clustered with Paenibacillus species, and the organism was most closely related to Paenibacillus lautus. Lucigen Corp. prepared genomic DNA and the genome was sequenced, assembled, and annotated by the DOE Joint Genome Institute. The genome sequence was deposited at the NCBI in October 2009 (NC_013406). The genome of Paenibacillus sp. Y412MC10 consists of one circular chromosome of 7,121,665 bp with an average G+C content of 51.2%. Comparison to other Paenibacillus species shows the organism lacks nitrogen fixation, antibiotic production and social interaction genes reported in other paenibacilli. The Y412MC10 genome shows a high level of synteny and homology to the draft sequence of Paenibacillus sp. HGF5, an organism from the Human Microbiome Project (HMP) Reference Genomes. This, combined with genomic CAZyme analysis, suggests an intestinal, rather than environmental origin for Y412MC10.
C1 [Mead, David A.; Hochstein, Rebecca; Schoenfeld, Thomas] Lucigen Corp, Middleton, WI USA.
[Mead, David A.; Pitluck, Sam; Brumm, Phillip] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53715 USA.
[Lucas, Susan; Copeland, Alex; Lapidus, Alla; Cheng, Jan-Feng; Bruce, David C.; Goodwin, Lynne A.; Chertkov, Olga; Zhang, Xiaojing; Detter, John C.; Han, Cliff S.; Tapia, Roxanne; Land, Miriam; Hauser, Loren J.; Chang, Yun-juan; Kyrpides, Nikos C.; Ivanova, Natalia N.; Ovchinnikova, Galina; Woyke, Tanja; Brumm, Catherine] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Bruce, David C.; Goodwin, Lynne A.; Zhang, Xiaojing; Detter, John C.; Han, Cliff S.; Tapia, Roxanne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Land, Miriam; Hauser, Loren J.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Brumm, P (reprint author), Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53715 USA.
EM pbrumm@c56technologies.com
RI Lapidus, Alla/I-4348-2013; Land, Miriam/A-6200-2011; Kyrpides,
Nikos/A-6305-2014
OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031;
Kyrpides, Nikos/0000-0002-6131-0462
FU US Department of Energy Office of Science, Biological and Environmental
Research Program,; University of California, Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396];
DOE Great Lakes Bioenergy Research Center (DOE Office of Science) [BER
DE-FC02-07ER64494]
FX This work was performed under the auspices of the US Department of
Energy Office of Science, Biological and Environmental Research Program,
and by the University of California, Lawrence Berkeley National
Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore
National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos
National Laboratory under contract No. DE-AC02-06NA25396. This work was
funded in part by the DOE Great Lakes Bioenergy Research Center (DOE
Office of Science BER DE-FC02-07ER64494).
NR 56
TC 14
Z9 15
U1 3
U2 28
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 6
IS 3
BP 366
EP 385
DI 10.4056/sigs.2605792
PG 20
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082PW
UT WOS:000314405400008
PM 23408395
ER
PT J
AU Mabee, P
Deans, A
Huala, E
Lewis, SE
AF Mabee, Paula
Deans, Andrew
Huala, Eva
Lewis, Suzanna E.
TI Phenotype Ontology Research Coordination Network meeting report:
creating a community network for comparing and leveraging
phenotype-genotype knowledge across species
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
AB Representing phenotype in a way that can be linked to thousands of molecular genetic and environmental databases is an unresolved research challenge. A recent meeting of the Phenotype Research Coordination Network (RCN) aimed to coordinate and leverage current efforts. The three day summit meeting was hosted by NESCent (The National Evolutionary Synthesis Center) in Durham, North Carolina on the 23rd - 25th of February, 2012.
C1 [Deans, Andrew] Penn State Univ, University Pk, PA 16802 USA.
[Huala, Eva] Carnegie Inst Sci, Dept Plant Biol, Stanford, CA 94305 USA.
[Mabee, Paula] Univ S Dakota, Dept Biol, Vermillion, SD 57069 USA.
[Lewis, Suzanna E.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Genome Div, Berkeley, CA 94720 USA.
RP Mabee, P (reprint author), Univ S Dakota, Dept Biol, Vermillion, SD 57069 USA.
OI Mabee, Paula/0000-0002-8455-3213; Huala, Eva/0000-0003-4631-7241; Deans,
Andrew/0000-0002-2119-4663; Lewis, Suzanna/0000-0002-8343-612X
FU funding agency, U.S. National Science Foundation [DEB-0956049]
FX We are grateful to our funding agency, U.S. National Science Foundation,
award number DEB-0956049, as a part of their program to advance research
through support for communication and coordination efforts. We also wish
to thank our hosts for this meeting, the National Evolutionary Synthesis
Center (NESCent), for providing such a superb venue and support staff.
NR 0
TC 1
Z9 1
U1 0
U2 2
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 6
IS 3
BP 440
EP 443
DI 10.4056/sigs.2926219
PG 4
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082PW
UT WOS:000314405400013
PM 23409218
ER
PT J
AU Liolios, K
Schriml, L
Hirschman, L
Pagani, I
Nosrat, B
Sterk, P
White, O
Rocca-Serra, P
Sansone, SA
Taylor, C
Kyrpides, NC
Field, D
AF Liolios, Konstantinos
Schriml, Lynn
Hirschman, Lynette
Pagani, Ioanna
Nosrat, Bahador
Sterk, Peter
White, Owen
Rocca-Serra, Philippe
Sansone, Susanna-Assunta
Taylor, Chris
Kyrpides, Nikos C.
Field, Dawn
TI The Metadata Coverage Index (MCI): A standardized metric for quantifying
database metadata richness
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
ID METAGENOMIC PROJECTS; MINIMUM INFORMATION; GENOMES; GOLD
AB Variability in the extent of the descriptions of data ('metadata') held in public repositories forces users to assess the quality of records individually, which rapidly becomes impractical. The scoring of records on the richness of their description provides a simple, objective proxy measure for quality that enables filtering that supports downstream analysis. Pivotally, such descriptions should spur on improvements. Here, we introduce such a measure - the 'Metadata Coverage Index' (MCI): the percentage of available fields actually filled in a record or description. MCI scores can be calculated across a database, for individual records or for their component parts (e.g., fields of interest). There are many potential uses for this simple metric: for example; to filter, rank or search for records; to assess the metadata availability of an ad hoc collection; to determine the frequency with which fields in a particular record type are filled, especially with respect to standards compliance; to assess the utility of specific tools and resources, and of data capture practice more generally; to prioritize records for further curation; to serve as performance metrics of funded projects; or to quantify the value added by curation. Here we demonstrate the utility of MCI scores using metadata from the Genomes Online Database (GOLD), including records compliant with the 'Minimum Information about a Genome Sequence' (MIGS) standard developed by the Genomic Standards Consortium. We discuss challenges and address the further application of MCI scores; to show improvements in annotation quality over time, to inform the work of standards bodies and repository providers on the usability and popularity of their products, and to assess and credit the work of curators. Such an index provides a step towards putting metadata capture practices and in the future, standards compliance, into a quantitative and objective framework.
C1 [Liolios, Konstantinos; Pagani, Ioanna; Nosrat, Bahador; Kyrpides, Nikos C.] Dept Energy Joint Genome Inst, Microbial Genom & Metagen Super Program, Walnut Creek, CA USA.
[Schriml, Lynn; White, Owen] Univ Maryland, Sch Med, Inst Genome Sci, Baltimore, MD 21201 USA.
[Sterk, Peter] Wellcome Trust Sanger Inst, Cambridge, England.
[Rocca-Serra, Philippe; Sansone, Susanna-Assunta; Field, Dawn] Univ Oxford, Oxford E Res Ctr, Oxford, England.
[Taylor, Chris] EBI, European Mol Biol Lab EMBL Outstn, Cambridge, England.
[Field, Dawn] Ctr Ecol & Hydrol, Wallingford, Oxon, England.
RP Kyrpides, NC (reprint author), Dept Energy Joint Genome Inst, Microbial Genom & Metagen Super Program, Walnut Creek, CA USA.
EM nckyrpides@lbl.gov; fiedawn@googlemail.com
RI Kyrpides, Nikos/A-6305-2014;
OI Kyrpides, Nikos/0000-0002-6131-0462; Sansone,
Susanna-Assunta/0000-0001-5306-5690; Sterk, Peter/0000-0003-1668-7778;
Schriml, Lynn/0000-0001-8910-9851
FU NERC [NE/D01252X/1]; Office of Science of the US Department of Energy
[DE-AC02-05CH11231]; US National Institutes of Health Data Analysis and
Coordination Center [U01-HG004866]; Ioanna Bozionelou
FX We would like to thank Kristin Tennessen (JGI) for help with the
figures. This work was funded by NERC grant NE/D01252X/1 to DF. KL, IP,
BN, and NCK were supported by the Office of Science of the US Department
of Energy under contract DE-AC02-05CH11231 and together with OW by the
US National Institutes of Health Data Analysis and Coordination Center
contract U01-HG004866. The support of Ioanna Bozionelou is especially
acknowledged.
NR 16
TC 1
Z9 1
U1 1
U2 4
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 6
IS 3
BP 444
EP 453
DI 10.4056/sigs.2675953
PG 10
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082PW
UT WOS:000314405400014
ER
PT S
AU Aqili, A
Ali, Z
Hussain, Z
AF Aqili, Akram
Ali, Zulfiqar
Hussain, Zahid
BE Eldada, LA
TI Optical and structural properties of silver doped ZnSe thin films
prepared by CSS and ion exchange process
SO THIN FILM SOLAR TECHNOLOGY IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Thin Film Solar Technology IV Held at the SPIE Solar
Energy + Technology Symposium
CY AUG 12-13, 2012
CL San Diego, CA
SP SPIE
DE Thin films; ZnSe; Ag; transmittance; XRD; EDX
ID ELECTRICAL-PROPERTIES; 2-SOURCE EVAPORATION; PHYSICAL-PROPERTIES;
REFRACTIVE-INDEX; AG; TEMPERATURE; ZNTE
AB ZnSe thin films were prepared by, simple low cost, closed space sublimation method (CSS). The silver doping was achieved by ion exchange process, i.e. immersing the films in low concentrated silver nitrate solution for different time periods and flowed by heated treatment in vacuum. The effect of silver concentration on the optical properties, such as refractive index, absorption coefficient and optical band gap, have been calculated from the normal transmission spectra in UV, Visible and NIR region. The structure of the films was studied by X-ray diffraction. The EDS attached to SEM was used to determine the composition of the films. The electrical resistivity, at room temperature, was also measured and it was reduced considerably as silver concentration increased.
C1 [Aqili, Akram] Hashemite Univ, Dept Phys, Zarqa, Jordan.
[Ali, Zulfiqar; Hussain, Zahid] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Ali, Zulfiqar] Opt lab, Islamabad 44000, Pakistan.
RP Aqili, A (reprint author), Hashemite Univ, Dept Phys, Zarqa, Jordan.
EM Zulfiqar1965@yahoo.com
NR 25
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9187-9
J9 PROC SPIE
PY 2012
VL 8470
DI 10.1117/12.945963
PG 8
WC Energy & Fuels; Physics, Applied
SC Energy & Fuels; Physics
GA BDQ60
UT WOS:000314467300010
ER
PT S
AU Bebek, CJ
Coles, RA
Denes, P
Dion, F
Emes, JH
Frost, R
Groom, DE
Groulx, R
Haque, S
Holland, SE
Karcher, A
Kolbe, WF
Lee, JS
Palaio, NP
Roe, NA
Tran, CH
Wang, G
AF Bebek, C. J.
Coles, R. A.
Denes, P.
Dion, F.
Emes, J. H.
Frost, R.
Groom, D. E.
Groulx, R.
Haque, S.
Holland, S. E.
Karcher, A.
Kolbe, W. F.
Lee, J. S.
Palaio, N. P.
Roe, N. A.
Tran, C. H.
Wang, G.
BE Holland, AD
Beletic, JW
TI CCD Research and Development at Lawrence Berkeley National Laboratory
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Charge-coupled device; fully depleted; back illuminated;
high-resistivity silicon; floating-gate amplifiers; buried-contact
technology; DECam
ID CHARGE-COUPLED-DEVICES; HIGH-RESISTIVITY SILICON; BACK; FABRICATION
AB We describe work at Lawrence Berkeley National Laboratory (LBNL) to develop enhanced performance, fully depleted, back-illuminated charge-coupled devices for astronomy and astrophysics. The CCDs are fabricated on high-resistivity substrates and are typically 200-300 mu m thick for improved near-infrared response. The primary research and development areas include methods to reduce read noise, increase quantum efficiency and readout speed, and the development of fabrication methods for the efficient production of CCDs for large focal planes. In terms of noise reduction, we will describe technology developments with our industrial partner Teledyne DALSA Semiconductor to develop a buried-contact technology for reduced floating-diffusion capacitance, as well as efforts to develop "skipper" CCDs with sub-electron noise utilizing non-destructive readout amplifiers allowing for multiple sampling of the charge packets. Improvements in quantum efficiency in the near-infrared utilizing ultra-high resistivity substrates that allow full depletion of 500 mu m and thicker substrates will be described, as well as studies to improve the blue and UV sensitivity by investigating the limits on the thickness of the back-side ohmic contact layer used in the LBNL technology. Improvements in readout speed by increasing the number of readout ports will be described, including work on high frame-rate CCDs for x-ray synchrotrons with as many as 192 amplifiers per CCD. Finally, we will describe improvements in fabrication methods, developed in the course of producing over 100 science-grade 2k x 4k CCDs for the Dark Energy Survey Camera.
C1 [Bebek, C. J.; Denes, P.; Emes, J. H.; Groom, D. E.; Haque, S.; Holland, S. E.; Karcher, A.; Kolbe, W. F.; Lee, J. S.; Palaio, N. P.; Roe, N. A.; Tran, C. H.; Wang, G.] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
[Dion, F.; Frost, R.; Groulx, R.] Teledyne DALSA Semicond, Bromont, PQ J2L IS7, Canada.
[Coles, R. A.] Wayne State Univ, Detroit, MI 48202 USA.
RP Holland, SE (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM seholland@lbl.gov
RI Holland, Stephen/H-7890-2013
FU Office of Science; U.S. Department of Energy [DE-AC02-05CH11231]
FX This work was supported by the Director, Office of Science, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 46
TC 2
Z9 2
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 845305
DI 10.1117/12.926606
PG 16
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800004
ER
PT S
AU Estrada, J
Cancelo, G
Diehl, T
Fernandez-Moroni, G
AF Estrada, Juan
Cancelo, Gustavo
Diehl, Tom
Fernandez-Moroni, Guillermo
BE Holland, AD
Beletic, JW
TI Beating the 1/f noise limit on Charge Coupled Devices
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE CCD; noise; digitial filtering
AB Scientific CCD detectors are typically readout using the Correlated Double Sampling (CDS) technique. At low pixel rates, noise of similar to 2e- RMS is typically achieved. The limitation for reaching lower noise comes from the 1/f component on the output of the CCD, and this noise cannot be eliminated using CDS. A new readout technique based on a digital filter is presented here for suppressing the 1/f. Using this new technique a noise of 0.4e- is achieved.
C1 [Estrada, Juan; Cancelo, Gustavo; Diehl, Tom; Fernandez-Moroni, Guillermo] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
RP Estrada, J (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM estrada@fnal.gov
NR 6
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 84531E
DI 10.1117/12.925983
PG 7
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800040
ER
PT S
AU Kotov, IV
Kotov, AI
Frank, J
Kubanek, P
O'Connor, P
Radeka, V
Takacs, P
AF Kotov, I. V.
Kotov, A. I.
Frank, J.
Kubanek, P.
O'Connor, P.
Radeka, V.
Takacs, P.
BE Holland, AD
Beletic, JW
TI Charge Diffusion Measurement in Fully Depleted CCD using Fe-55 X-rays
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE CCD; charge diffusion; CCD X-ray detectors
ID DRIFT DETECTORS; DYNAMICS
AB Tight requirements on the Large Synoptic Survey Telescope point spread function (PSF) demand sensor contribution to PSF be both small and well characterized. The sensor PSF is determined by the lateral charge diffusion on the drift path from the photon conversion point to the gates. The maximum drift path occurs for photons converted at the window, for blue optical photons in particular. Charges generated at the window surface undergo "worst case" charge spreading and the blue optical PSF is used to characterize the sensor's PSF.
Different techniques for charge diffusion characterization have been developed, each with its own systematics and measurement difficulties. A new way to measure charge diffusion using an X-ray source is presented. We demonstrate the effectiveness and limitations of our technique and discuss relation of charge diffusion value obtained with X-ray measurements to sensor PSF.
C1 [Kotov, I. V.; Kotov, A. I.; Frank, J.; O'Connor, P.; Radeka, V.; Takacs, P.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Frank, J.] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
RP Kotov, IV (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM kotov@bnl.gov
RI Kubanek, Petr/G-7209-2014
FU National Science Foundation through Governing Cooperative Agreement
[0809409]; Association of Universities for Research in Astronomy (
AURA); Department of Energy [DE- AC02- 76- SFO0515]; LSSTC
FX Authors acknowledge e2v technologies help in sensor prototype
development. This manuscript has been co- authored by employees of
Brookhaven Science Associates, LLC. LSST project activities are
supported in part by the National Science Foundation through Governing
Cooperative Agreement 0809409 managed by the Association of Universities
for Research in Astronomy ( AURA), and the Department of Energy under
contract DE- AC02- 76- SFO0515 with the SLAC National Accelerator
Laboratory. Additional LSST funding comes from private donations, grants
to universities, and in- kind support from LSSTC Institutional Members.
NR 18
TC 3
Z9 3
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 84531B
DI 10.1117/12.921327
PG 6
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800037
ER
PT S
AU O'Connor, P
Fried, J
Kotov, I
AF O'Connor, P.
Fried, J.
Kotov, I.
BE Holland, AD
Beletic, JW
TI An Advanced CCD Emulator with 32MB Image Memory
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE CCD; emulator; LSST
AB As part of the LSST sensor development program we have developed an advanced CCD emulator for testing new multichannel readout electronics. The emulator, based on an Altera Stratix II FPGA for timing and control, produces 4 channels of simulated video waveforms in response to an appropriate sequence of horizontal and vertical clocks. It features 40MHz, 16-bit DACs for reset and video generation, 32MB of image memory for storage of arbitrary grayscale bitmaps, and provision to simulate reset and clock feedthrough ("glitches") on the video channels. Clock inputs are qualified for proper sequences and levels before video output is generated. Binning, region of interest, and reverse clock sequences are correctly recognized and appropriate video output will be produced. Clock transitions are timestamped and can be played back to a control PC.
A simplified user interface is provided via a daughter card having an ARM M3 Cortex microprocessor and miniature color LCD display and joystick. The user can select video modes from stored bitmap images, or flat, gradient, bar, chirp, or checkerboard test patterns; set clock thresholds and video output levels; and set row/column formats for image outputs. Multiple emulators can be operated in parallel to simulate complex CCDs or CCD arrays.
C1 [O'Connor, P.; Fried, J.; Kotov, I.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP O'Connor, P (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
NR 1
TC 1
Z9 1
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 845324
DI 10.1117/12.926996
PG 9
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800061
ER
PT S
AU O'Connor, P
Kotov, I
Takacs, PZ
Frank, JS
Plate, S
Van Berg, R
Newcomer, M
Antilogus, P
Lebbolo, H
Tocut, V
Juramy, C
Doherty, P
Felt, N
AF O'Connor, P.
Kotov, I.
Takacs, P. Z.
Frank, J. S.
Plate, S.
Van Berg, R.
Newcomer, M.
Antilogus, P.
Lebbolo, H.
Tocut, V.
Juramy, C.
Doherty, P.
Felt, N.
BE Holland, AD
Beletic, JW
TI Development of the LSST raft tower modules
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE CCD; LSST
AB The science focal plane of the Large Synoptic Survey Telescope is made up of 21 modules designated "raft towers". Each raft tower module (RTM) is an autonomous, fully-testable and serviceable 144 Mpixel imager consisting of nine highly-segmented CCDs with complete readout electronics chain. To minimize noise and obscuration the RTM is housed in a compact enclosure fully contained within the camera cryostat. The RTM is required to meet strict performance goals for image plane flatness, readout speed, noise, and power dissipation. Key components include the 4K x 4K fully-depleted CCDs with 16 outputs each, ceramic CCD support structure, and ASIC electronics for video processing and clock/bias generation. In addition to CCD signal handling, the RTM electronics also includes monitoring for temperature, voltage, and current, makeup heater control, ASIC configuration and readback, powerdown modes, and specialized diagnostic outputs. Digitized data are transmitted out of the camera cryostat over a single 3Gb/s serial link.
We describe the conceptual design of the CCD array, front and back end electronics, and mechanics, then discuss test system integration and present initial measurements of flatness metrology, optical, electronic, and thermal performance.
C1 [O'Connor, P.; Kotov, I.; Takacs, P. Z.; Frank, J. S.; Plate, S.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Van Berg, R.; Newcomer, M.] Univ Penn, Philadelphia, PA 19104 USA.
[Antilogus, P.; Lebbolo, H.; Juramy, C.] LPNHE, Paris, France.
[Tocut, V.] LAL, Orsay, France.
[Doherty, P.; Felt, N.] Harvard Univ, Cambridge, MA 02139 USA.
RP O'Connor, P (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
FU National Science Foundation through Governing Cooperative Agreement
[0809409]; Association of Universities for Research in Astronomy (AURA);
Department of Energy [DE-AC02-76-SFO0515, DE-AC02-98CH10886]; SLAC
National Accelerator Laboratory; private donations, grants to
universities; LSSTC Institutional Members; employees of Brookhaven
Science Associates, LLC
FX LSST project activities are supported in part by the National Science
Foundation through Governing Cooperative Agreement 0809409 managed by
the Association of Universities for Research in Astronomy (AURA), and
the Department of Energy under contract DE-AC02-76-SFO0515 with the SLAC
National Accelerator Laboratory. Additional LSST funding comes from
private donations, grants to universities, and in-kind support from
LSSTC Institutional Members.This manuscript has been co-authored by
employees of Brookhaven Science Associates, LLC. Portions of this work
are supported by the Department of Energy under contract
DE-AC02-98CH10886 with Brookhaven National Laboratory.
NR 4
TC 3
Z9 3
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 84530L
DI 10.1117/12.926645
PG 13
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800015
ER
PT S
AU Shaw, T
Ballester, O
Cardiel-Sas, L
Castilla, J
Chappa, S
de Vicente, J
Holm, S
Huffman, D
Kozlovsky, M
Martinez, G
Moore, T
Olsen, J
Simaitis, V
Stuermer, W
AF Shaw, Theresa
Ballester, Otger
Cardiel-Sas, Laia
Castilla, Javier
Chappa, Steve
de Vicente, Juan
Holm, Scott
Huffman, Dave
Kozlovsky, Mark
Martinez, Gustavo
Moore, Todd
Olsen, Jamieson
Simaitis, Vaidas
Stuermer, Walter
BE Holland, AD
Beletic, JW
TI The Dark Energy Camera Readout System
SO HIGH ENERGY, OPTICAL, AND INFRARED DETECTORS FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on High Energy, Optical, and Infrared Detectors for Astronomy
V
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Dark Energy; Blanco; readout; electronics; DECam
AB The Dark Energy Camera (DECam) was developed for use by the Dark Energy Survey (DES). The camera will be installed in the Blanco 4M telescope at the Cerro Tololo Inter-American Observatory (CTIO) and be ready for observations in the second half of 2012. The focal plane consists of 62 2x4K and 12 2x2K fully depleted CCDs. The camera provides a 3 sq. degree view and the survey will cover a 5000 sq. degree area. The camera cage and corrector have already been installed.
The development of the electronics to readout the focal plane was a collaborative effort by multiple institutions in the United States and in Spain. The goal of the electronics is to provide readout at 250 kpixels/second with less than 15e(-) rms noise. Integration of these efforts and initial testing took place at Fermi National Accelerator Laboratory. DECam currently resides at CTIO and further testing has occurred in the Coude room of the Blanco. In this paper, we describe the development of the readout system, test results and the lessons learned.
C1 [Shaw, Theresa; Chappa, Steve; Holm, Scott; Huffman, Dave; Kozlovsky, Mark; Olsen, Jamieson; Stuermer, Walter] Fermilab Natl Accelerator Lab, Box 500, Batavia, IL 60510 USA.
[Ballester, Otger; Cardiel-Sas, Laia] Univ Autonoma Barcelona, IFAE, Edifici Cn, E-08193 Barcelona, Spain.
[Castilla, Javier; de Vicente, Juan; Martinez, Gustavo] CIEMAT, Madrid 28040, Spain.
[Moore, Todd; Simaitis, Vaidas] Univ Illinois, Urbana, IL 61801 USA.
RP Shaw, T (reprint author), Fermilab Natl Accelerator Lab, Box 500, Batavia, IL 60510 USA.
EM Tshaw@fnal.gov
RI Martinez Botella, Gustavo/K-8834-2014; De Vicente, Juan/H-3242-2015
OI Martinez Botella, Gustavo/0000-0002-1061-8520; De Vicente,
Juan/0000-0001-8318-6813
FU U.S. Department of Energy; U.S. National Science Foundation; Ministry of
Science and Education of Spain; Science and Technology Facilities
Council of the United Kingdom; Higher Education Funding Council for
England; National Center for Supercomputing Applications at the
University of Illinois at Urbana-Champaign; Kavli Institute of
Cosmological Physics at the University of Chicago; Financiadora de
Estudos e Projetos; Fundacao Carlos Chagas Filho de Amparo a Pesquisa do
Estado do Rio de Janeiro; Conselho Nacional de Desenvolvimento
Cientifico e Tecnologico and the Ministerio da Ciencia e Tecnologia;
German Research Foundation-sponsored cluster of excellence "Origin and
Structure of the Universe"
FX Funding for the DES Projects has been provided by the U.S. Department of
Energy, the U.S. National Science Foundation, the Ministry of Science
and Education of Spain, the Science and Technology Facilities Council of
the United Kingdom, the Higher Education Funding Council for England,
the National Center for Supercomputing Applications at the University of
Illinois at Urbana-Champaign, the Kavli Institute of Cosmological
Physics at the University of Chicago, Financiadora de Estudos e
Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do
Rio de Janeiro, Conselho Nacional de Desenvolvimento Cientifico e
Tecnologico and the Ministerio da Ciencia e Tecnologia, the German
Research Foundation-sponsored cluster of excellence "Origin and
Structure of the Universe" and the Collaborating Institutions in the
Dark Energy Survey.
NR 6
TC 1
Z9 1
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9154-1
J9 PROC SPIE
PY 2012
VL 8453
AR 84532Q
DI 10.1117/12.926284
PG 9
WC Astronomy & Astrophysics; Optics
SC Astronomy & Astrophysics; Optics
GA BDL74
UT WOS:000313678800077
ER
PT J
AU Serra, S
Toutant, A
Bataille, F
Zhou, Y
AF Serra, Sylvain
Toutant, Adrien
Bataille, Francoise
Zhou, Ye
TI High-temperature gradient effect on a turbulent channel flow using
thermal large-eddy simulation in physical and spectral spaces
SO JOURNAL OF TURBULENCE
LA English
DT Article
DE thermal large-eddy simulations; plane channel; nonisothermal turbulent
flow; low-Mach-number equations; turbulent fluctuation spectra
ID DIRECT NUMERICAL-SIMULATION; HEAT-TRANSFER; SCALAR TRANSPORT; NUMBER;
DIFFUSIVITY; COMBUSTION; VISCOSITY; REYNOLDS; MODEL
AB This paper studied nonisothermal plane channel flows using themethod of thermal large-eddy simulations (TLES). Several temperature ratios (T-R = T-H/T-C) were investigated, where T-C and T-H are the temperatures of the cold and hot sides, respectively. Each T-R case is further considered for two wall Reynolds numbers (Re-tau m), 180 and 395, where the wall Reynolds number was defined as the average of the local wall Reynolds number values obtained for the cold and hot sides, Re-tau C and Re-tau H. For a given wall Reynolds number Re-tau m, it was demonstrated that the increased temperature ratio directly led to an enhanced disparity between the local wall Reynolds numbers of the cold and hot sides. Essentially, the wall Reynolds number for the cold side (Re-tau C) is increased, but its companion value for the hot side (Re-tau H) is decreased. In the case of large temperature ratio, the asymmetry of the mean velocity and temperature profiles is also increased. The major findings are that for high-temperature ratios, the flow on the hot side could relaminarize, as indicated by the parabolicity of the axial flow profile on the hot side; however, this process can be overcome if the flow has a greater turbulent intensity, as illustrated for the higher-Reynolds-number case studied in the paper. Finally, the impact of the temperature gradient on the turbulent fluctuations is investigated by controlling the influence of the Reynolds number. Four nonisothermal energy spectra on the cold and the hot side are compared and contrasted with eight isothermal flows. Here, the isothermal flows were chosen so that their Reynolds numbers have the same values as those Re-tau C and Re-tau H previously evaluated from the nonisothermal flows. The isothermal spectra reproduced the classical Kolmogorov spectra when the Reynolds numbers were sufficiently high. As a result, any observed deviation of the spectra index of the nonisothermal spectra from that of the isothermal one is a direct consequence of the temperature gradient.
C1 [Serra, Sylvain; Toutant, Adrien; Bataille, Francoise] PROMES CNRS, UPR Rambla Thermodynam 8521, Perpignan, France.
[Zhou, Ye] Lawrence Livermore Natl Lab, Livermore, CA USA.
RP Bataille, F (reprint author), PROMES CNRS, UPR Rambla Thermodynam 8521, Perpignan, France.
EM francoise.daumas-bataille@univ-perp.fr
FU University of Perpignan
FX The authors wish to acknowledge the support of the CINES (France), for
providing computer resources to carry out simulations. The authors are
also thankful to the CEA (France Atomic Agency), for their support with
Trio U code. The last author (Y.Z.) is extremely grateful to University
of Perpignan, which provided support for his visit during which some of
his work was carried out.
NR 25
TC 4
Z9 4
U1 1
U2 12
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 1468-5248
J9 J TURBUL
JI J. Turbul.
PY 2012
VL 13
IS 49
BP 1
EP 25
DI 10.1080/14685248.2012.728000
PG 25
WC Mechanics; Physics, Fluids & Plasmas
SC Mechanics; Physics
GA 082OU
UT WOS:000314402400001
ER
PT S
AU Cooper, VR
Ihm, Y
Morris, JR
AF Cooper, Valentino R.
Ihm, Yungok
Morris, James R.
BE Landau, DP
Schuttler, HB
Lewis, S
Bachmann, M
TI Hydrogen adsorption at the graphene surface: A vdW-DF perspective
SO PROCEEDINGS OF THE 25TH WORKSHOP ON COMPUTER SIMULATION STUDIES IN
CONDENSED MATTER PHYSICS
SE Physics Procedia
LA English
DT Proceedings Paper
CT 25th Workshop on Computer Simulation Studies in Condensed Matter Physics
CY FEB 20-24, 2012
CL Athens, GA
DE graphene; vdW-DF
ID INTERPLANAR BINDING; NANOPOROUS CARBONS; PORE-SIZE; STORAGE; GRAPHITE;
SIMULATION
AB We use the recently developed van der Waals density functional (vdW-DF) along with the C09x exchange functional to explore the interactions of molecular hydrogen with a single sheet of graphene. Our calculations demonstrate the importance of the inclusion of dispersion interactions for evaluating the adsorption capacity of graphitic, sparsely packed materials. In particular we show that, although the commonly used local density approximation (LDA) exchane-correlation functional gives reasonable H-2-graphene separation distances, these interactions are in fact too strong and decrease too rapidly as the H-2-graphene seperation distances increases. On the other hand, calculations employing the generalized gradient approximation (GGA) for exchange and correlation exhibit very little binding. The vdW-DFC09x functional, however, gives binding very similar to bechmark second-order Moller-Plesset (MP2) theory results for the H-2-coronesne interaction and has an appropriate long range interaction with the graphene shett. This shortcoming of the LDA and GGA functionals is shown to have significant consequences on the overall adsorption densities of H-2 near the graphene, thus emphasizing the fundamental importance of properly characterizing the interactions of adsorbed molecules in porous media.
C1 [Cooper, Valentino R.; Morris, James R.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
[Ihm, Yungok; Morris, James R.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA.
RP Cooper, VR (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RI Cooper, Valentino /A-2070-2012; Morris, J/I-4452-2012
OI Cooper, Valentino /0000-0001-6714-4410; Morris, J/0000-0002-8464-9047
FU Materials Sciences and Engineering Division, Office of Basic Energy
Sciences, U.S. Department of Energy; Office of Science, U.S. Department
of Energy [DEAC02-05CHI1231]
FX This work was supported by the Materials Sciences and Engineering
Division, Office of Basic Energy Sciences, U.S. Department of Energy.
This research used resouces of the National Energy Reserach Scientific
Computing Center, Supported by the Office of Science, U.S. Department of
Energy under Contract No. DEAC02-05CHI1231.
NR 28
TC 6
Z9 6
U1 2
U2 25
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 34
BP 34
EP 38
DI 10.1016/j.phpro.2012.05.005
PG 5
WC Mathematics, Applied; Physics, Condensed Matter
SC Mathematics; Physics
GA BDO20
UT WOS:000314152800005
ER
PT S
AU Kato, Y
AF Kato, Yasuyuki
BE Landau, DP
Schuttler, HB
Lewis, S
Bachmann, M
TI Quantum Monte-Carlo study of magnetic ordering in ZnV2O4
SO PROCEEDINGS OF THE 25TH WORKSHOP ON COMPUTER SIMULATION STUDIES IN
CONDENSED MATTER PHYSICS
SE Physics Procedia
LA English
DT Proceedings Paper
CT 25th Workshop on Computer Simulation Studies in Condensed Matter Physics
CY FEB 20-24, 2012
CL Athens, GA
DE Quantum Monte-Carlo; Vanadium spinels; Magnetization; Three-band Hubbard
model
ID SPINEL
AB We study the magnetic ordering of Vanadium spinels by Quantum Monte Carlo simulations of a three-band Hubbard model. Vanadium spinels, AV(2)O(4), exhibit a unique "up-up-down-down" spin ordering at low temperatures. While this magnetic ordering was originally measured in 1973, its origin has remained unclear for many years due to the lack of unbiased approaches for solving the relevant model. A three-band Hubbard model on the spinel lattice (corner sharing tetrahedra) is a minimal Hamiltonian for describing the t(2g) electrons of the V2+ ions. One of the main difficulties is that this family of compounds belongs to the elusive intermediate-coupling regime (U greater than or similar to t) for which there is no small parameter that can justify a perturbative expansion. We present a controlled Quantum Monte-Carlo approach to the three-band Hubbard model relevant for this materials that reproduces the up-up-down-down spin ordering. The method is free of the sign problem that is usually the main limiting factor for simulating fermionic systems in dimension higher than one.
C1 [Kato, Yasuyuki] Los Alamos Natl Lab, Teoret Div, Los Alamos, NM 87545 USA.
RP Kato, Y (reprint author), Los Alamos Natl Lab, Teoret Div, POB 1663, Los Alamos, NM 87545 USA.
NR 15
TC 0
Z9 0
U1 1
U2 7
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1875-3892
J9 PHYSCS PROC
PY 2012
VL 34
BP 60
EP 65
DI 10.1016/j.phpro.2012.05.010
PG 6
WC Mathematics, Applied; Physics, Condensed Matter
SC Mathematics; Physics
GA BDO20
UT WOS:000314152800010
ER
PT J
AU Neupane, S
Finlay, RD
Kyrpides, NC
Goodwin, L
Alstrom, S
Lucas, S
Land, M
Han, J
Lapidus, A
Cheng, JF
Bruce, D
Pitluck, S
Peters, L
Ovchinnikova, G
Held, B
Han, C
Detter, JC
Tapia, R
Hauser, L
Ivanova, N
Pagani, I
Woyke, T
Klenk, HP
Hogberg, N
AF Neupane, Saraswoti
Finlay, Roger D.
Kyrpides, Nikos C.
Goodwin, Lynne
Alstrom, Sadhna
Lucas, Susan
Land, Miriam
Han, James
Lapidus, Alla
Cheng, Jan-Fang
Bruce, David
Pitluck, Sam
Peters, Lin
Ovchinnikova, Galina
Held, Brittany
Han, Cliff
Detter, John C.
Tapia, Roxanne
Hauser, Loren
Ivanova, Natalia
Pagani, Ioanna
Woyke, Tanja
Klenk, Hans-Peter
Hogberg, Nils
TI Complete genome sequence of the plant-associated Serratia plymuthica
strain AS13
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Gram-negative; non-sporulating; motile; plant-associated;
chemoorganotrophic; Enterobacteriaceae
ID OILSEED RAPE; RNA GENES; ANNOTATION; PREDICTION; BACTERIA; DATABASE;
HRO-C48; SYSTEM; TOOL
AB Serratia plymuthica AS13 is a plant-associated Gammaproteobacteria, isolated from rapeseed roots. It is of special interest because of its ability to inhibit fungal pathogens of rapeseed and to promote plant growth. The complete genome of S. plymuthica AS13 consists of a 5,442,549 bp circular chromosome. The chromosome contains 4,951 protein-coding genes, 87 tRNA genes and 7 rRNA operons. This genome was sequenced as part of the project entitled "Genomics of four rapeseed plant growth promoting bacteria with antagonistic effect on plant pathogens" within the 2010 DOE-JGI Community Sequencing Program (CSP2010).
C1 [Neupane, Saraswoti; Finlay, Roger D.; Alstrom, Sadhna; Hogberg, Nils] Swedish Univ Agr Sci, Dept Forest Mycol & Pathol, Uppsala, Sweden.
[Kyrpides, Nikos C.; Goodwin, Lynne; Lucas, Susan; Land, Miriam; Han, James; Lapidus, Alla; Cheng, Jan-Fang; Bruce, David; Pitluck, Sam; Peters, Lin; Ovchinnikova, Galina; Held, Brittany; Han, Cliff; Detter, John C.; Tapia, Roxanne; Hauser, Loren; Ivanova, Natalia; Pagani, Ioanna; Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Goodwin, Lynne; Bruce, David; Held, Brittany; Han, Cliff; Detter, John C.; Tapia, Roxanne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Land, Miriam; Hauser, Loren] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
RP Neupane, S (reprint author), Swedish Univ Agr Sci, Dept Forest Mycol & Pathol, Uppsala, Sweden.
EM Saraswoti.Neupane@slu.se
RI Kyrpides, Nikos/A-6305-2014; Finlay, Roger/B-4731-2009; Lapidus,
Alla/I-4348-2013; Land, Miriam/A-6200-2011
OI Kyrpides, Nikos/0000-0002-6131-0462; Finlay, Roger/0000-0002-3652-2930;
Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031
FU Office of Science of the US Department of Energy [DE-AC02-05CH11231]
FX We gratefully acknowledge the help of Elke Lang for providing cell
cultures of the reference bacterial strain, Evelyne-Marie Brambilla for
extraction of DNA and Anne Fiebig for assembly of the reference genome
required for digital DNA-DNA hybridizations (all at DSMZ). The work
conducted by the US Department of Energy Joint Genome Institute is
supported by the Office of Science of the US Department of Energy under
Contract No. DE-AC02-05CH11231.
NR 44
TC 6
Z9 6
U1 2
U2 11
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 22
EP 30
DI 10.4056/sigs.2966299
PG 9
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900003
PM 23450001
ER
PT J
AU Lucas-Elio, P
Goodwin, L
Woyke, T
Pitluck, S
Nolan, M
Kyrpides, NC
Detter, JC
Copeland, A
Lu, M
Bruce, D
Detter, C
Tapia, R
Han, SS
Land, ML
Ivanova, N
Mikhailova, N
Johnston, AWB
Sanchez-Amat, A
AF Lucas-Elio, Patricia
Goodwin, Lynne
Woyke, Tanja
Pitluck, Sam
Nolan, Matt
Kyrpides, Nikos C.
Detter, Janine C.
Copeland, Alex
Lu, Megan
Bruce, David
Detter, Chris
Tapia, Roxanne
Han, Shunsheng
Land, Miriam L.
Ivanova, Natalia
Mikhailova, Natalia
Johnston, Andrew W. B.
Sanchez-Amat, Antonio
TI Complete genome sequence of Marinomonas posidonica type strain
(IVIA-Po-181(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Aerobic; Gram-negative; marine; plant-associated
ID POLYPHENOL OXIDASE; RNA GENES; BACTERIA; MEDITERRANEA; FAMILY;
PHOTORHABDUS; ANNOTATION; PREDICTION; SYSTEM; TOOL
AB Marinomonas posidonica IVIA-Po-181(T) Lucas-Elio et al. 2011 belongs to the family Oceanospirillaceae within the phylum Proteobacteria. Different species of the genus Marinomonas can be readily isolated from the seagrass Posidonia oceanica. M. posidonica is among the most abundant species of the genus detected in the cultured microbiota of P. oceanica, suggesting a close relationship with this plant, which has a great ecological value in the Mediterranean Sea, covering an estimated surface of 38,000 Km(2). Here we describe the genomic features of M. posidonica. The 3,899,940 bp long genome harbors 3,544 protein-coding genes and 107 RNA genes and is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
C1 [Lucas-Elio, Patricia; Sanchez-Amat, Antonio] Univ Murcia, Dept Genet & Microbiol, Murcia, Spain.
[Goodwin, Lynne; Woyke, Tanja; Pitluck, Sam; Nolan, Matt; Kyrpides, Nikos C.; Detter, Janine C.; Copeland, Alex; Ivanova, Natalia; Mikhailova, Natalia] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Goodwin, Lynne; Lu, Megan; Bruce, David; Detter, Chris; Tapia, Roxanne; Han, Shunsheng] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Land, Miriam L.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Johnston, Andrew W. B.] Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England.
RP Sanchez-Amat, A (reprint author), Univ Murcia, Dept Genet & Microbiol, Reg Campus Int Excellence Campus Mare Nostrum, Murcia, Spain.
EM antonio@um.es
RI Johnston, Andrew/D-1859-2009; Lucas-Elio, Patricia/K-5861-2014; Land,
Miriam/A-6200-2011; Sanchez-Amat, Antonio/L-2695-2014; Kyrpides,
Nikos/A-6305-2014
OI Lucas-Elio, Patricia/0000-0001-7182-1189; Land,
Miriam/0000-0001-7102-0031; Sanchez-Amat, Antonio/0000-0001-8597-9235;
Kyrpides, Nikos/0000-0002-6131-0462
FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231];
Fundacion Seneca (CARM, Spain) [11867/PI/09]
FX The work conducted by the U.S. Department of Energy Joint Genome
Institute is supported by the Office of Science of the U.S. Department
of Energy under Contract No. DE-AC02-05CH11231. Work on Marinomonas
posidonica was supported by several grants from the Fundacion Seneca
(CARM, Spain) (Current project 11867/PI/09).
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PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 31
EP 43
DI 10.4056/sigs.2976373
PG 13
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900004
PM 23458837
ER
PT J
AU Kappler, U
Davenport, K
Beatson, S
Lucas, S
Lapidus, A
Copeland, A
Berry, KW
Del Rio, TG
Hammon, N
Dalin, E
Tice, H
Pitluck, S
Richardson, P
Bruce, D
Goodwin, LA
Han, C
Tapia, R
Detter, JC
Chang, YJ
Jeffries, CD
Land, M
Hauser, L
Kyrpides, NC
Goker, M
Ivanova, N
Klenk, HP
Woyke, T
AF Kappler, Ulrike
Davenport, Karen
Beatson, Scott
Lucas, Susan
Lapidus, Alla
Copeland, Alex
Berry, Kerrie W.
Del Rio, Tijana Glavina
Hammon, Nancy
Dalin, Eileen
Tice, Hope
Pitluck, Sam
Richardson, Paul
Bruce, David
Goodwin, Lynne A.
Han, Cliff
Tapia, Roxanne
Detter, John C.
Chang, Yun-juan
Jeffries, Cynthia D.
Land, Miriam
Hauser, Loren
Kyrpides, Nikos C.
Goeker, Markus
Ivanova, Natalia
Klenk, Hans-Peter
Woyke, Tanja
TI Complete genome sequence of the facultatively chemolithoautotrophic and
methylotrophic alpha Proteobacterium Starkeya novella type strain (ATCC
8093(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE strictly aerobic; facultatively chemoautotrophic; methylotrophic and
heterotrophic; Gram-negative; rod-shaped; non-motile; soil bacterium;
Xanthobacteraceae; CSP 2008
ID BACTERIAL SULFITE DEHYDROGENASE; CYTOCHROME C OXIDOREDUCTASE;
THIOBACILLUS-NOVELLUS; THIOSULFATE OXIDATION; DIRECT ELECTROCHEMISTRY;
ELECTRON-TRANSFER; ACTIVE-SITE; RNA GENES; OXIDASE; PURIFICATION
AB Starkeya novella (Starkey 1934) Kelly et al. 2000 is a member of the family Xanthobacteraceae in the order 'Rhizobiales', which is thus far poorly characterized at the genome level. Cultures from this species are most interesting due to their facultatively chemolithoautotrophic lifestyle, which allows them to both consume carbon dioxide and to produce it. This feature makes S. novella an interesting model organism for studying the genomic basis of regulatory networks required for the switch between consumption and production of carbon dioxide, a key component of the global carbon cycle. In addition, S. novella is of interest for its ability to grow on various inorganic sulfur compounds and several C1-compounds such as methanol. Besides Azorhizobium caulinodans, S. novella is only the second species in the family Xanthobacteraceae with a completely sequenced genome of a type strain. The current taxonomic classification of this group is in significant conflict with the 16S rRNA data. The genomic data indicate that the physiological capabilities of the organism might have been underestimated. The 4,765,023 bp long chromosome with its 4,511 protein-coding and 52 RNA genes was sequenced as part of the DOE Joint Genome Institute Community Sequencing Program (CSP) 2008.
C1 [Kappler, Ulrike; Beatson, Scott] Univ Queensland, Brisbane, Qld, Australia.
[Davenport, Karen; Bruce, David; Goodwin, Lynne A.; Han, Cliff; Tapia, Roxanne; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Lucas, Susan; Lapidus, Alla; Copeland, Alex; Berry, Kerrie W.; Del Rio, Tijana Glavina; Hammon, Nancy; Dalin, Eileen; Tice, Hope; Pitluck, Sam; Richardson, Paul; Bruce, David; Goodwin, Lynne A.; Han, Cliff; Tapia, Roxanne; Detter, John C.; Chang, Yun-juan; Jeffries, Cynthia D.; Land, Miriam; Hauser, Loren; Kyrpides, Nikos C.; Ivanova, Natalia; Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Chang, Yun-juan; Jeffries, Cynthia D.; Land, Miriam; Hauser, Loren] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Goeker, Markus; Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
RP Klenk, HP (reprint author), Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
EM u.kappler1@uq.edu.au; hpk@dsmz.de
RI Lapidus, Alla/I-4348-2013; Land, Miriam/A-6200-2011; Beatson,
Scott/B-6985-2013; Kyrpides, Nikos/A-6305-2014
OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031;
Beatson, Scott/0000-0002-1806-3283; Kyrpides, Nikos/0000-0002-6131-0462
FU Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231,
DP 0878525]
FX The work conducted by the U.S. Department of Energy Joint Genome
Institute was supported by the Office of Science of the U.S. Department
of Energy under Contract No. DE-AC02-05CH11231, and a Fellowship and
grant to UK (DP 0878525). We would like to thank Dr. Richard Webb from
the Center for Microscopy and Microanalysis at the University of
Queensland for preparing the electron micrograph of S. novella.
NR 73
TC 7
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U1 2
U2 10
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 44
EP 58
DI 10.4056/sigs.3006378
PG 15
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900005
PM 23450099
ER
PT J
AU Rawat, SR
Mannisto, MK
Starovoytov, V
Goodwin, L
Nolan, M
Hauser, L
Land, M
Davenport, KW
Woyke, T
Haggblom, MM
AF Rawat, Suman R.
Mannisto, Minna K.
Starovoytov, Valentin
Goodwin, Lynne
Nolan, Matt
Hauser, Lauren
Land, Miriam
Davenport, Karen Walston
Woyke, Tanja
Haggblom, Max M.
TI Complete genome sequence of Terriglobus saanensis type strain SP1PR4(T),
an Acidobacteria from tundra soil
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE cold adapted; acidophile; tundra soil; Acidobacteria
ID BACTERIAL COMMUNITIES; PHYLUM ACIDOBACTERIA; RNA GENES; DIVERSITY;
ANNOTATION; PREDICTION; DATABASE; SYSTEM; THAW; TOOL
AB Terriglobus saanensis SP1PR4(T) is a novel species of the genus Terriglobus. T. saanensis is of ecological interest because it is a representative of the phylum Acidobacteria, which are dominant members of bacterial soil microbiota in Arctic ecosystems. T. saanensis is a cold-adapted acidophile and a versatile heterotroph utilizing a suite of simple sugars and complex polysaccharides. The genome contained an abundance of genes assigned to metabolism and transport of carbohydrates including gene modules encoding for carbohydrate-active enzyme (CAZyme) family involved in breakdown, utilization and biosynthesis of diverse structural and storage polysaccharides. T. saanensis SP1PR4(T)represents the first member of genus Terriglobus with a completed genome sequence, consisting of a single replicon of 5,095,226 base pairs (bp), 54 RNA genes and 4,279 protein-coding genes. We infer that the physiology and metabolic potential of T. saanensis is adapted to allow for resilience to the nutrient-deficient conditions and fluctuating temperatures of Arctic tundra soils.
C1 [Rawat, Suman R.; Haggblom, Max M.] Rutgers State Univ, Dept Biochem & Microbiol, New Brunswick, NJ 08901 USA.
[Mannisto, Minna K.] Finnish Forest Res Inst, Rovaniemi, Finland.
[Starovoytov, Valentin] Rutgers State Univ, Dept Cell Biol & Neurosci, Piscataway, NJ USA.
[Hauser, Lauren; Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Goodwin, Lynne; Davenport, Karen Walston] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Nolan, Matt; Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
RP Rawat, SR (reprint author), Rutgers State Univ, Dept Biochem & Microbiol, New Brunswick, NJ 08901 USA.
EM rawat@aesop.rutgers.edu
RI Land, Miriam/A-6200-2011; Haggblom, Max/E-7597-2010
OI Land, Miriam/0000-0001-7102-0031; Haggblom, Max/0000-0001-6307-7863
FU Office of Science of the US Department of Energy [DE-AC02-05CH11231];
Academy of Finland; New Jersey Agricultural Experiment Station
FX The work conducted by the US Department of Energy Joint Genome Institute
is supported by the Office of Science of the US Department of Energy
Under Contract No. DE-AC02-05CH11231. This work was funded in part by
the Academy of Finland and the New Jersey Agricultural Experiment
Station.
NR 39
TC 10
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U2 18
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 59
EP 69
DI 10.4056/sigs.3036810
PG 12
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900006
PM 23450133
ER
PT J
AU Giovannelli, D
Ricci, J
Perez-Rodriguez, I
Hugler, M
O'Brien, C
Keddis, R
Grosche, A
Goodwin, L
Bruce, D
Davenport, KW
Detter, C
Han, J
Han, SS
Ivanova, N
Land, ML
Mikhailova, N
Nolan, M
Pitluck, S
Tapia, R
Woyke, T
Vetriani, C
AF Giovannelli, Donato
Ricci, Jessica
Perez-Rodriguez, Ileana
Huegler, Michael
O'Brien, Charles
Keddis, Ramaydalis
Grosche, Ashley
Goodwin, Lynne
Bruce, David
Davenport, Karen W.
Detter, Chris
Han, James
Han, Shunsheng
Ivanova, Natalia
Land, Miriam L.
Mikhailova, Natalia
Nolan, Matt
Pitluck, Sam
Tapia, Roxanne
Woyke, Tanja
Vetriani, Costantino
TI Complete genome sequence of Thermovibrio ammonificans HB-1(T), a
thermophilic, chemolithoautotrophic bacterium isolated from a deep-sea
hydrothermal vent
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Aquificae; Desulfurobacteriaceae; thermophilic; anaerobic;
chemolithoautotrophic; hydrothermal vent
ID NITRATE-AMMONIFYING BACTERIUM; SP-NOV.; GEN. NOV.; REDUCING BACTERIUM;
RNA GENES; PREDICTION; ALIGNMENT; SYSTEM; TOOLS
AB Thermovibrio ammonificans type strain HB-1(T) is a thermophilic (T-opt: 75 degrees C), strictly anaerobic, chemolithoautotrophic bacterium that was isolated from an active, high temperature deep-sea hydrothermal vent on the East Pacific Rise. This organism grows on mineral salts medium in the presence of CO2/H-2, using NO3- or S-0 as electron acceptors, which are reduced to ammonium or hydrogen sulfide, respectively. T. ammonificans is one of only three species within the genus Thermovibrio, a member of the family Desulfurobacteriaceae, and it forms a deep branch within the phylum Aquificae. Here we report the main features of the genome of T. ammonificans strain HB-1T (DSM 15698(T)).
C1 [Giovannelli, Donato; Ricci, Jessica; Perez-Rodriguez, Ileana; O'Brien, Charles; Keddis, Ramaydalis; Grosche, Ashley; Vetriani, Costantino] Rutgers State Univ, Dept Biochem & Microbiol, New Brunswick, NJ 08903 USA.
[Giovannelli, Donato; Ricci, Jessica; Perez-Rodriguez, Ileana; Keddis, Ramaydalis; Grosche, Ashley; Vetriani, Costantino] Rutgers State Univ, Inst Marine & Coastal Sci, New Brunswick, NJ 08903 USA.
[Giovannelli, Donato] Natl Res Council Italy CNR, Inst Marine Sci ISMAR, Ancona, Italy.
[Huegler, Michael] Water Technol Ctr, Dept Microbiol, Karlsruhe, Germany.
[Bruce, David; Han, James; Ivanova, Natalia; Mikhailova, Natalia; Nolan, Matt; Pitluck, Sam; Woyke, Tanja] Joint Genome Inst, Walnut Creek, CA USA.
[Goodwin, Lynne; Davenport, Karen W.; Detter, Chris; Han, Shunsheng; Tapia, Roxanne] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Land, Miriam L.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Vetriani, C (reprint author), Rutgers State Univ, Dept Biochem & Microbiol, New Brunswick, NJ 08903 USA.
EM vetriani@marine.rutgers.edu
RI Land, Miriam/A-6200-2011; Giovannelli, Donato/A-4812-2011; Keddis,
Ramaydalis/B-1420-2014; CNR, Ismar/P-1247-2014
OI Land, Miriam/0000-0001-7102-0031; Giovannelli,
Donato/0000-0001-7182-8233; CNR, Ismar/0000-0001-5351-1486
FU US Department of Energy; NSF [MCB 04-56676, OCE 03-27353, MCB 08-43678,
OCE 09-37371, OCE 11-24141]; New Jersey Agricultural Experiment Station
FX The genome of Thermovibrio ammonificans was sequenced under the auspices
of the US Department of Energy. Work on T. ammonificans was supported,
entirely or in part, by NSF Grants MCB 04-56676, OCE 03-27353, MCB
08-43678, OCE 09-37371 and OCE 11-24141 to CV, and by the New Jersey
Agricultural Experiment Station.
NR 25
TC 4
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U1 3
U2 11
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PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 82
EP 90
DI 10.4056/sigs.2856770
PG 9
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900008
PM 23449845
ER
PT J
AU Plugge, CM
Henstra, AM
Worm, P
Swarts, DC
Paulitsch-Fuchs, AH
Scholten, JCM
Lykidis, A
Lapidus, AL
Goltsman, E
Kim, E
McDonald, E
Rohlin, L
Crable, BR
Gunsalus, RP
Stams, AJM
McInerney, MJ
AF Plugge, Caroline M.
Henstra, Anne M.
Worm, Petra
Swarts, Daan C.
Paulitsch-Fuchs, Astrid H.
Scholten, Johannes C. M.
Lykidis, Athanasios
Lapidus, Alla L.
Goltsman, Eugene
Kim, Edwin
McDonald, Erin
Rohlin, Lars
Crable, Bryan R.
Gunsalus, Robert P.
Stams, Alfons J. M.
McInerney, Michael J.
TI Complete genome sequence of Syntrophobacter fumaroxidans strain (MPOBT)
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE Anaerobic; Gram-negative; syntrophy; sulfate reducer; mesophile;
propionate conversion; host-defense systems; Syntrophobacteraceae;
Syntrophobacter fumaroxidans; Methanospirillum hungatei
ID PROPIONATE-OXIDIZING BACTERIUM; SULFATE-REDUCING BACTERIUM; SP-NOV.;
METHANOSPIRILLUM-HUNGATEI; QUINONE OXIDOREDUCTASES;
DESULFOVIBRIO-VULGARIS; SMITHELLA-PROPIONICA; GEN. NOV.; SP. NOV.;
MICROORGANISMS
AB Syntrophobacter fumaroxidans strain MPOBT is the best-studied species of the genus Syntrophobacter. The species is of interest because of its anaerobic syntrophic lifestyle, its involvement in the conversion of propionate to acetate, H-2 and CO2 during the overall degradation of organic matter, and its release of products that serve as substrates for other microorganisms. The strain is able to ferment fumarate in pure culture to CO2 and succinate, and is also able to grow as a sulfate reducer with propionate as an electron donor. This is the first complete genome sequence of a member of the genus Syntrophobacter and a member genus in the family Syntrophobacteraceae. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 4,990,251 bp long genome with its 4,098 protein-coding and 81 RNA genes is a part of the Microbial Genome Program (MGP) and the Genomes to Life (GTL) Program project.
C1 [Plugge, Caroline M.; Henstra, Anne M.; Worm, Petra; Swarts, Daan C.; Stams, Alfons J. M.] Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
[Henstra, Anne M.; McDonald, Erin; Rohlin, Lars; Gunsalus, Robert P.] Univ Calif Los Angeles, Dept Microbiol Immunol & Mol Genet, Los Angeles, CA USA.
[Paulitsch-Fuchs, Astrid H.] Wetsus, Ctr Excellence Sustainable Water Technol, Leeuwarden, Netherlands.
[Scholten, Johannes C. M.] Pacific NW Natl Lab, Microbiol Grp, Richland, WA 99352 USA.
[Lykidis, Athanasios; Lapidus, Alla L.; Goltsman, Eugene; Kim, Edwin] Joint Genome Inst, Walnut Creek, CA USA.
[Crable, Bryan R.; McInerney, Michael J.] Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA.
RP Plugge, CM (reprint author), Wageningen Univ, Microbiol Lab, NL-6700 AP Wageningen, Netherlands.
EM caroline.plugge@wur.nl
RI Lapidus, Alla/I-4348-2013; Stams, Alfons/C-8167-2014
OI Swarts, Daan/0000-0003-4412-9191; Lapidus, Alla/0000-0003-0427-8731;
Stams, Alfons/0000-0001-7840-6500
FU Earth and Life Sciences division of the Netherlands Organization for
Scientific Research (NWO) [ALW 814.02.017]; Chemical Science division of
the Netherlands Organization for Scientific Research (NWO) [CW
700.55.343]; Netherlands Genome Initiative [NGI 050-72-408]; Division of
Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
Sciences of the US Department of Energy [DE-FG02-96ER20214]; US
Department of Energy [DE-FG03-86ER13498]; UCLA-DOE Institute of Genomics
and Proteomics
FX The European authors were financially supported by the Earth and Life
Sciences division (ALW 814.02.017) and Chemical Science division (CW
700.55.343) of the Netherlands Organization for Scientific Research
(NWO). CMP was supported by a short-term personal fellowship of the
Netherlands Genome Initiative (NGI 050-72-408). Annotation assistance
provided by Dr. McInerney's group was supported by grant
DE-FG02-96ER20214 from the Division of Chemical Sciences, Geosciences,
and Biosciences, Office of Basic Energy Sciences of the US Department of
Energy and genomic analyses provided by Dr. Gunsalus' group were
supported by US Department of Energy grant DE-FG03-86ER13498 and the
UCLA-DOE Institute of Genomics and Proteomics.
NR 44
TC 12
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U1 2
U2 25
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 91
EP 106
DI 10.4056/sigs.2996379
PG 16
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900009
PM 23450070
ER
PT J
AU Riedel, T
Held, B
Nolan, M
Lucas, S
Lapidus, A
Tice, H
Del Rio, TG
Cheng, JF
Han, C
Tapia, R
Goodwin, LA
Pitluck, S
Liolios, K
Mavromatis, K
Pagani, I
Ivanova, N
Mikhailova, N
Pati, A
Chen, A
Palaniappan, K
Land, M
Rohde, M
Tindall, BJ
Detter, JC
Goker, M
Bristow, J
Eisen, JA
Markowitz, V
Hugenholtz, P
Kyrpides, NC
Klenk, HP
Woyke, T
AF Riedel, Thomas
Held, Brittany
Nolan, Matt
Lucas, Susan
Lapidus, Alla
Tice, Hope
Del Rio, Tijana Glavina
Cheng, Jan-Fang
Han, Cliff
Tapia, Roxanne
Goodwin, Lynne A.
Pitluck, Sam
Liolios, Konstantinos
Mavromatis, Konstantinos
Pagani, Ioanna
Ivanova, Natalia
Mikhailova, Natalia
Pati, Amrita
Chen, Amy
Palaniappan, Krishna
Land, Miriam
Rohde, Manfred
Tindall, Brian J.
Detter, John C.
Goeker, Markus
Bristow, James
Eisen, Jonathan A.
Markowitz, Victor
Hugenholtz, Philip
Kyrpides, Nikos C.
Klenk, Hans-Peter
Woyke, Tanja
TI Genome sequence of the Antarctic rhodopsins-containing flavobacterium
Gillisia limnaea type strain (R-8282(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE aerobic; motile; rod-shaped; moderately halotolerant; psychrophilic;
chemohete-rotrophic; proteorhodopsin; microbial mat; yellow-pigmented;
Flavobacteriaceae; GEBA
ID FAMILY FLAVOBACTERIACEAE; SP-NOV.; EMENDED DESCRIPTION;
SALINIBACTER-RUBER; CAROTENOID ANTENNA; GLIDING MOTILITY; PROTON PUMP;
SEA-WATER; GEN.-NOV.; BACTERIA
AB Gillisia limnaea Van Trappen et al. 2004 is the type species of the genus Gillisia, which is a member of the well characterized family Flavobacteriaceae. The genome of G. limnea R-8282(T) is the first sequenced genome (permanent draft) from a type strain of the genus Gillisia. Here we describe the features of this organism, together with the permanent-draft genome sequence and annotation. The 3,966,857 bp long chromosome (two scaffolds) with its 3,569 protein-coding and 51 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
C1 [Riedel, Thomas; Rohde, Manfred; Klenk, Hans-Peter] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
[Held, Brittany; Nolan, Matt; Lucas, Susan; Lapidus, Alla; Tice, Hope; Del Rio, Tijana Glavina; Cheng, Jan-Fang; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Pitluck, Sam; Liolios, Konstantinos; Mavromatis, Konstantinos; Pagani, Ioanna; Ivanova, Natalia; Mikhailova, Natalia; Pati, Amrita; Detter, John C.; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.; Woyke, Tanja] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Held, Brittany; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
[Land, Miriam] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Tindall, Brian J.; Goeker, Markus] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
[Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA.
[Hugenholtz, Philip] Univ Queensland, Sch Chem & Mol Biosci, Australian Ctr Ecogen, Brisbane, Qld, Australia.
RP Klenk, HP (reprint author), HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
RI Lapidus, Alla/I-4348-2013; Land, Miriam/A-6200-2011; Kyrpides,
Nikos/A-6305-2014; Hugenholtz, Philip/G-9608-2011
OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031;
Kyrpides, Nikos/0000-0002-6131-0462; Eisen, Jonathan
A./0000-0002-0159-2197;
FU US Department of Energy Office of Science, Biological and Environmental
Research Program; University of California, Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396];
UT-Battelle; Oak Ridge National Laboratory [DE-AC05-00OR22725]; German
Research Foundation (DFG) [INST 599/1-2, TRR 51]
FX We would like to gratefully acknowledge the help of Helga Pomrenke for
growing G. limnaea cultures and Evelyne-Marie Brambilla for DNA
extraction and quality control (both at the DSMZ). This work was
performed under the auspices of the US Department of Energy Office of
Science, Biological and Environmental Research Program, and by the
University of California, Lawrence Berkeley National Laboratory under
contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory
under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory
under contract No. DE-AC02-06NA25396, UT-Battelle and Oak Ridge National
Laboratory under contract DE-AC05-00OR22725, as well as German Research
Foundation (DFG) INST 599/1-2 as well as TRR 51.
NR 69
TC 6
Z9 6
U1 3
U2 10
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 107
EP 119
DI 10.4056/sigs.3216895
PG 13
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900010
PM 23450183
ER
PT J
AU Riedel, T
Held, B
Nolan, M
Lucas, S
Lapidus, A
Tice, H
Del Rio, TG
Cheng, JF
Han, C
Tapia, R
Goodwin, LA
Pitluck, S
Liolios, K
Mavromatis, K
Pagani, I
Ivanova, N
Mikhailova, N
Pati, A
Chen, A
Palaniappan, K
Rohde, M
Tindall, BJ
Detter, JC
Goker, M
Woyke, T
Bristow, J
Eisen, JA
Markowitz, V
Hugenholtz, P
Klenk, HP
Kyrpides, NC
AF Riedel, Thomas
Held, Brittany
Nolan, Matt
Lucas, Susan
Lapidus, Alla
Tice, Hope
Del Rio, Tijana Glavina
Cheng, Jan-Fang
Han, Cliff
Tapia, Roxanne
Goodwin, Lynne A.
Pitluck, Sam
Liolios, Konstantinos
Mavromatis, Konstantinos
Pagani, Ioanna
Ivanova, Natalia
Mikhailova, Natalia
Pati, Amrita
Chen, Amy
Palaniappan, Krishna
Rohde, Manfred
Tindall, Brian J.
Detter, John C.
Goeker, Markus
Woyke, Tanja
Bristow, James
Eisen, Jonathan A.
Markowitz, Victor
Hugenholtz, Philip
Klenk, Hans-Peter
Kyrpides, Nikos C.
TI Genome sequence of the orange-pigmented seawater bacterium Owenweeksia
hongkongensis type strain (UST20020801(T))
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
DE aerobic; motile; rod-shaped; mesophilic; non-fermentative;
Gram-negative; orange-pigmented sea water; Bacteroidetes; Flavobacteria;
Cryomorphaceae; GEBA
ID FRESH-WATER BACTERIUM; GEN. NOV.; MARINE BACTERIUM;
BACTEROIDES-THETAIOTAOMICRON; PHYLOGENETIC DIVERSITY; FAMILY
CRYOMORPHACEAE; ORGANIC-MATTER; FLAVOBACTERIA; ARCHAEA; ASSEMBLAGES
AB Owenweeksia hongkongensis Lau et al. 2005 is the sole member of the monospecific genus Owenweeksia in the family Cryomorphaceae, a poorly characterized family at the genome level thus far. This family comprises seven genera within the class Flavobacteria. Family members are known to be psychrotolerant, rod-shaped and orange pigmented (beta-carotene), typical for Flavobacteria. For growth, seawater and complex organic nutrients are necessary. The genome of O. hongkongensis UST20020801(T) is only the second genome of a member of the family Cryomorphaceae whose sequence has been deciphered. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 4,000,057 bp long chromosome with its 3,518 protein-coding and 45 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
C1 [Riedel, Thomas; Rohde, Manfred] HZI Helmholtz Ctr Infect Res, Braunschweig, Germany.
[Held, Brittany; Nolan, Matt; Lucas, Susan; Lapidus, Alla; Tice, Hope; Del Rio, Tijana Glavina; Cheng, Jan-Fang; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Pitluck, Sam; Liolios, Konstantinos; Mavromatis, Konstantinos; Pagani, Ioanna; Ivanova, Natalia; Mikhailova, Natalia; Pati, Amrita; Detter, John C.; Woyke, Tanja; Bristow, James; Eisen, Jonathan A.; Hugenholtz, Philip; Kyrpides, Nikos C.] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Held, Brittany; Han, Cliff; Tapia, Roxanne; Goodwin, Lynne A.; Detter, John C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Chen, Amy; Palaniappan, Krishna; Markowitz, Victor] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Biol Data Management & Technol Ctr, Berkeley, CA 94720 USA.
Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Tindall, Brian J.; Goeker, Markus; Klenk, Hans-Peter] Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
[Eisen, Jonathan A.] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA.
[Hugenholtz, Philip] Univ Queensland, Sch Chem & Mol Biosci, Australian Ctr Ecogen, Brisbane, Qld, Australia.
RP Klenk, HP (reprint author), Leibniz Inst DSMZ German Collect Microorganisms &, Braunschweig, Germany.
EM hpk@dsmz.de
RI Hugenholtz, Philip/G-9608-2011; Lapidus, Alla/I-4348-2013; Land,
Miriam/A-6200-2011; Kyrpides, Nikos/A-6305-2014;
OI Lapidus, Alla/0000-0003-0427-8731; Land, Miriam/0000-0001-7102-0031;
Kyrpides, Nikos/0000-0002-6131-0462; Eisen, Jonathan
A./0000-0002-0159-2197
FU US Department of Energy Office of Science, Biological and Environmental
Research Program; University of California, Lawrence Berkeley National
Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396];
UT-Battelle; Oak Ridge National Laboratory [DE-AC05-00OR22725]; German
Research Foundation (DFG) [INST 599/1-2, Transregio-SFB 51 Roseobacter]
FX The authors would like to gratefully acknowledge the help of Helga
Pomrenke for growing O. hongkongensis cultures and Evelyne-Marie
Brambilla for DNA extraction and quality control (both at DSMZ). This
work was performed under the auspices of the US Department of Energy
Office of Science, Biological and Environmental Research Program, and by
the University of California, Lawrence Berkeley National Laboratory
under contract No. DE-AC02-05CH11231, Lawrence Livermore National
Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National
Laboratory under contract No. DE-AC02-06NA25396, UT-Battelle and Oak
Ridge National Laboratory under contract DE-AC05-00OR22725, as well as
German Research Foundation (DFG) INST 599/1-2 and Transregio-SFB 51
Roseobacter.
NR 48
TC 7
Z9 7
U1 1
U2 9
PU GENOMIC STAND CONSORT
PI EAST LANSING
PA MICHIGAN STATE UNIV, GEEO GARRITY, DEPT MICROBIOL, 6162 BIOMED & PHYS
SCI BLDG, EAST LANSING, MI 48824 USA
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 120
EP 130
DI 10.4056/sigs.3296896
PG 11
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900011
PM 23450211
ER
PT J
AU Robbins, RJ
Amaral-Zettler, L
Bik, H
Blum, S
Edwards, J
Field, D
Garrity, G
Gilbert, JA
Kottmann, R
Krishtalka, L
Lapp, H
Lawrence, C
Morrison, N
Tuama, EO
Parr, C
Gil, IS
Schindel, D
Schriml, L
Vieglas, D
Wooley, J
AF Robbins, Robert J.
Amaral-Zettler, Linda
Bik, Holly
Blum, Stan
Edwards, James
Field, Dawn
Garrity, George
Gilbert, Jack A.
Kottmann, Renzo
Krishtalka, Leonard
Lapp, Hilmar
Lawrence, Carolyn
Morrison, Norman
Tuama, Eamonn O.
Parr, Cynthia
Gil, Inigo San
Schindel, David
Schriml, Lynn
Vieglas, David
Wooley, John
TI RCN4GSC Workshop Report: Managing Data at the Interface of Biodiversity
and (Meta)Genomics, March 2011
SO STANDARDS IN GENOMIC SCIENCES
LA English
DT Article
ID MINIMUM INFORMATION
AB Building on the planning efforts of the RCN4GSC project, a workshop was convened in San Diego to bring together experts from genomics and metagenomics, biodiversity, ecology, and bioinformatics with the charge to identify potential for positive interactions and progress, especially building on successes at establishing data standards by the GSC and by the biodiversity and ecological communities. Until recently, the contribution of microbial life to the biomass and biodiversity of the biosphere was largely overlooked (because it was resistant to systematic study). Now, emerging genomic and metagenomic tools are making investigation possible. Initial research findings suggest that major advances are in the offing. Although different research communities share some overlapping concepts and traditions, they differ significantly in sampling approaches, vocabularies and workflows. Likewise, their definitions of 'fitness for use' for data differ significantly, as this concept stems from the specific research questions of most importance in the different fields. Nevertheless, there is little doubt that there is much to be gained from greater coordination and integration. As a first step toward interoperability of the information systems used by the different communities, participants agreed to conduct a case study on two of the leading data standards from the two formerly disparate fields: (a) GSC's standard checklists for genomics and metagenomics and (b) TDWG's Darwin Core standard, used primarily in taxonomy and systematic biology.
C1 [Robbins, Robert J.; Wooley, John] Univ Calif San Diego, La Jolla, CA 92093 USA.
[Amaral-Zettler, Linda] Marine Biol Lab, Josephine Bay Paul Ctr Comparat Mol Biol & Evolut, Woods Hole, MA 02543 USA.
[Bik, Holly] Univ New Hampshire, Hubbard Ctr Genome Studies, Durham, NH 03824 USA.
[Blum, Stan] Calif Acad Sci, Ctr Appl Biodivers Informat, San Francisco, CA 94118 USA.
[Edwards, James; Parr, Cynthia] Smithsonian Inst, Washington, DC 20560 USA.
[Field, Dawn] Ctr Ecol & Hydrol, Wallingford, Oxon, England.
[Garrity, George] Michigan State Univ, Dept Microbiol & Mol Genet, E Lansing, MI 48824 USA.
[Gilbert, Jack A.] Argonne Natl Lab, Argonne, IL 60439 USA.
[Gilbert, Jack A.] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA.
[Kottmann, Renzo] Max Planck Inst Marine Microbiol, Microbial Genom Grp, Bremen, Germany.
[Krishtalka, Leonard; Vieglas, David] Univ Kansas, Museum Nat Hist, Lawrence, KS 66045 USA.
[Lapp, Hilmar] Natl Evolutionary Synth Ctr NESCent, Durham, NC USA.
[Lawrence, Carolyn] Iowa State Univ, USDA ARS, Corn Insects & Crop Genet Res Unit, Ames, IA USA.
[Lawrence, Carolyn] Iowa State Univ, Dept Genet Dev & Cell Biol, Crop Genome Informat Lab 1034, Ames, IA USA.
[Morrison, Norman] Univ Manchester, Sch Comp Sci, Manchester M13 9PL, Lancs, England.
[Tuama, Eamonn O.] GBIF Secretariat, Global Biodivers Informat Facil, Copenhagen, Denmark.
[Gil, Inigo San] Univ New Mexico, Dept Biol, LTER Network Off, Albuquerque, NM 87131 USA.
[Schindel, David] Smithsonian Inst, Natl Museum Nat Hist, Consortium Barcode Life, Washington, DC 20013 USA.
[Schriml, Lynn] Univ Maryland, Sch Med, Inst Genome Sci, Baltimore, MD 21201 USA.
RP Robbins, RJ (reprint author), Univ Calif San Diego, La Jolla, CA 92093 USA.
RI Garrity, George/F-7551-2013; Parr, Cynthia/E-8013-2010;
OI Garrity, George/0000-0002-4465-7034; Parr, Cynthia/0000-0002-8870-7099;
Lapp, Hilmar/0000-0001-9107-0714; Bik, Holly/0000-0002-4356-3837;
Schriml, Lynn/0000-0001-8910-9851
FU US National Science Foundation (NSF) [RCN4GSC, DBI-0840989]
FX We gratefully acknowledge the support from the US National Science
Foundation (NSF) grant RCN4GSC, DBI-0840989.
NR 5
TC 4
Z9 4
U1 0
U2 5
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1944-3277
J9 STAND GENOMIC SCI
JI Stand. Genomic Sci.
PY 2012
VL 7
IS 1
BP 159
EP 165
DI 10.4056/sigs.3156511
PG 7
WC Genetics & Heredity; Microbiology
SC Genetics & Heredity; Microbiology
GA 082QB
UT WOS:000314405900015
PM 23451294
ER
PT S
AU Dabling, JG
Filatov, A
Wheeler, JW
AF Dabling, Jeffrey G.
Filatov, Anton
Wheeler, Jason W.
GP IEEE
TI Static and Cyclic Performance Evaluation of Sensors for Human Interface
Pressure Measurement
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
AB Researchers and clinicians often desire to monitor pressure distributions on soft tissues at interfaces to mechanical devices such as prosthetics, orthotics or shoes. The most common type of sensor used for this type of applications is a Force Sensitive Resistor (FSR) as these are convenient to use and inexpensive. Several other types of sensors exist that may have superior sensing performance but are less ubiquitous or more expensive, such as optical or capacitive sensors. We tested five sensors (two FSRs, one optical, one capacitive and one fluid pressure) in a static drift and cyclic loading configuration. The results show that relative to the important performance characteristics for soft tissue pressure monitoring (i.e. hysteresis, drift), many of the sensors tested have significant limitations. The FSRs exhibited hysteresis, drift and loss of sensitivity under cyclic loading. The capacitive sensor had substantial drift. The optical sensor had some hysteresis and temperature-related drift. The fluid pressure sensor performed well in these tests but is not as flat as the other sensors and is not commercially available. Researchers and clinicians should carefully consider the convenience and performance trade-offs when choosing a sensor for soft-tissue pressure monitoring.
C1 [Dabling, Jeffrey G.; Wheeler, Jason W.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Filatov, Anton] Colorado Sch Mines, Golden, CO 80401 USA.
RP Dabling, JG (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jgdabli@sandia.gov; afilatov@mymail.mines.edu; jwwheel@sandia.gov
NR 6
TC 3
Z9 3
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 162
EP 165
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296500041
ER
PT S
AU Felix, S
Shah, K
George, D
Tolosa, V
Tooker, A
Sheth, H
Delima, T
Pannu, S
AF Felix, Sarah
Shah, Kedar
George, Diana
Tolosa, Vanessa
Tooker, Angela
Sheth, Heeral
Delima, Terri
Pannu, Satinderpall
GP IEEE
TI Removable Silicon Insertion Stiffeners for Neural Probes Using
Polyethylene Glycol As a Biodissolvable Adhesive
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
ID BRAIN-TISSUE; MICROELECTRODE ARRAYS; POLYIMIDE; STIFFNESS; IMPLANT
AB Flexible polymer probes are expected to enable extended interaction with neural tissue by minimizing damage from micromotion and reducing inflammatory tissue response. However, their flexibility prevents them from being easily inserted into the tissue. This paper describes an approach for temporarily attaching a silicon stiffener with biodissolvable polyethylene glycol (PEG) so that the stiffener can be released from the probe and extracted shortly after probe placement. A novel stiffener design with wicking channels, along with flipchip technology, enable accurate alignment of the probe to the stiffener, as well as uniform distribution of the PEG adhesive. Insertion, extraction, and electrode function were tested in both agarose gel and a rat brain. Several geometric and material parameters were tested to minimize probe displacement during stiffener extraction. We demonstrated average probe displacement of 28 +/- 9 mu m.
C1 [Felix, Sarah] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Felix, S (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM felix5@llnl.gov; shah22@llnl.gov; george27@llnl.gov; tolosa1@llnl.gov;
tooker1@llnl.gov; sheth2@llnl.gov; delima1@llnl.gov; pannu1@llnl.gov
NR 16
TC 10
Z9 10
U1 0
U2 7
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 871
EP 874
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296501035
ER
PT S
AU Carson, JP
Kuprat, AP
Colby, SM
Davis, CA
Basciano, CA
Greene, K
Feo, JT
Kennedy, A
AF Carson, James P.
Kuprat, Andrew P.
Colby, Sean M.
Davis, Cassi A.
Basciano, Christopher A.
Greene, Kevin
Feo, John T.
Kennedy, Andrew
GP IEEE
TI Detecting Distance between Injected Microspheres and Target Tumor via 3D
Reconstruction of Tissue Sections
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
AB One treatment increasing in use for solid tumors in the liver is radioembolization via the delivery of Y-90 microspheres to the vascular bed within or near the location of the tumor. It is desirable as part of the treatment for the microspheres to embed preferentially in or near the tumor. This work details an approach for analyzing the deposition of microspheres with respect to the location of the tumor. The approach used is based upon thin-slice serial sectioning of the tissue sample, followed by high resolution imaging, microsphere detection, and 3-D reconstruction of the tumor surface. Distance from the microspheres to the tumor was calculated using a fast deterministic point inclusion method.
C1 [Carson, James P.; Kuprat, Andrew P.; Colby, Sean M.; Davis, Cassi A.; Feo, John T.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Carson, JP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM james.carson@pnnl.gov; andrew.kuprat@pnnl.gov; sean.colby@pnnl.gov;
cassi.davis@pnnl.gov; cbasciano@ara.com; kgreene@unch.unc.edu;
john.feo@pnnl.gov; andrew.kennedy@usoncology.com
NR 10
TC 0
Z9 0
U1 1
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 1149
EP 1152
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296501103
ER
PT S
AU Paquit, VC
Karnowski, TP
Aykac, D
Li, YQ
Tobin, KW
Chaum, E
AF Paquit, Vincent C.
Karnowski, Thomas P.
Aykac, Deniz
Li, Yaqin
Tobin, Kenneth. W., Jr.
Chaum, Edward
GP IEEE
TI Detecting flash artifacts in fundus imagery
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
ID REGISTRATION
AB In a telemedicine environment for retinopathy screening, a quality check is needed on initial input images to ensure sufficient clarity for proper diagnosis. This is true whether the system uses human screeners or automated software for diagnosis. We present a method for the detection of flash artifacts found in retina images. We have collected a set of retina fundus imagery from February 2009 to August 2011 from several clinics in the mid-South region of the USA as part of a telemedical project. These images have been screened with a quality check that sometimes omits specific flash artifacts, which can be detrimental for automated detection of retina anomalies. A multi-step method for detecting flash artifacts in the center area of the retina was created by combining characteristic colorimetric information and morphological pattern matching. The flash detection was tested on a dataset of 5218 images representative of the population. The system achieved a sensitivity of 96.54% and specificity of 70.16% for the detection of the flash artifacts. The flash artifact detection can serve as a useful tool in quality screening of retina images in a telemedicine network. The detection can be expected to improve automated detection by either providing special handling for these images in combination with a flash mitigation or removal method.
C1 [Paquit, Vincent C.; Karnowski, Thomas P.; Aykac, Deniz; Tobin, Kenneth. W., Jr.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Paquit, VC (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM paquitvc@ornl.gov
RI Paquit, Vincent/K-9541-2013
OI Paquit, Vincent/0000-0003-0331-2598
NR 11
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 1442
EP 1445
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296501175
ER
PT S
AU Karakaya, M
Kerekes, RA
Morrell-Falvey, JL
Foster, CM
Retterer, ST
AF Karakaya, Mahmut
Kerekes, Ryan A.
Morrell-Falvey, Jennifer L.
Foster, Carmen M.
Retterer, Scott T.
GP IEEE
TI Analysis of Tight Junction Formation and Integrity
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
AB In this paper, we study segmentation of tight junctions and analyze the formation and integrity of tight junctions in large-scale confocal image stacks, a challenging biological problem because of the low spatial resolution images and the presence of breaks in tight junction structure. We present an automated, three-step processing approach for tight junction analysis. In our approach, we first localize each individual nucleus in the image by using thresholding, morphological filters and active contours. By using each nucleus position as a seed point, we automatically segment the cell body based on the active contour. We then use an intensity-based skeletonization algorithm to generate the boundary regions for each cell, and features are extracted from tight junctions associated with each cell to assess tight junction continuity. Based on qualitative results and quantitative comparisons, we show that we are able to automatically segment tight junctions and compute relevant features that provide a quantitative measure of tight junction formation to which the permeability of the cell monolayer can ultimately be correlated.
C1 [Karakaya, Mahmut; Kerekes, Ryan A.; Morrell-Falvey, Jennifer L.; Foster, Carmen M.; Retterer, Scott T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Karakaya, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM karakayam@ornl.gov
RI Retterer, Scott/A-5256-2011; Morrell-Falvey, Jennifer/A-6615-2011
OI Retterer, Scott/0000-0001-8534-1979; Morrell-Falvey,
Jennifer/0000-0002-9362-7528
NR 6
TC 1
Z9 1
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 3724
EP 3727
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296503236
ER
PT S
AU Thomas, M
Heath, BS
Laskin, J
Li, DS
Liu, E
Hui, K
Kuprat, AP
van Dam, KK
Carson, JP
AF Thomas, Mathew
Heath, Brandi S.
Laskin, Julia
Li, Dongsheng
Liu, Ellen
Hui, Katrina
Kuprat, Andrew P.
van Dam, Kerstin Kleese
Carson, James P.
GP IEEE
TI Visualization of High Resolution Spatial Mass Spectrometric Data during
Acquisition
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
AB Mass Spectrometric Imaging (MSI) allows the generation of 2D ion density maps that help visualize molecules present in sections of tissues and cells. The combination of spatial resolution and mass resolution results in very large and complex data sets. New capabilities are necessary for efficient analysis and interpretation of this data. This work details the development and application of the capability to process, visualize, query, and analyze spatial mass spectrometry data. Applications include the generation of 2D maps for selected spectra, the manipulation of the heat maps, and the identification of spectral peaks. Heat maps are generated by projecting the sum of intensity vs. time spectra of each pixel for selected m/z value or range. These capabilities take the form of a new interactive software toolkit, MSI QuickView. This software approach is a significant advance over the previous state-of-the art methods that required the conversion of the RAW data using one software, manual assembly of the data, and visualization in another software.
C1 [Thomas, Mathew; Heath, Brandi S.; Laskin, Julia; Li, Dongsheng; Liu, Ellen; Hui, Katrina; Kuprat, Andrew P.; van Dam, Kerstin Kleese; Carson, James P.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Thomas, M (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM mathew.thomas@pnnl.gov; brandi.heath@pnnl.gov; julia.laskin@pnnl.gov;
dongsheng.li@pnnl.gov; ellen.liu@pnnl.gov; katrina.hui@pnnl.gov;
andrew.kuprat@pnnl.gov; kerstin.kleesevandam@pnnl.gov;
james.carson@pnnl.gov
RI Laskin, Julia/H-9974-2012
OI Laskin, Julia/0000-0002-4533-9644
NR 7
TC 10
Z9 10
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 5545
EP 5548
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296505186
ER
PT S
AU Tooker, A
Tolosa, V
Shah, KG
Sheth, H
Felix, S
Delima, T
Pannu, S
AF Tooker, Angela
Tolosa, Vanessa
Shah, Kedar G.
Sheth, Heeral
Felix, Sarah
Delima, Terri
Pannu, Satinderpall
GP IEEE
TI Optimization of Multi-Layer Metal Neural Probe Design
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
AB We present here a microfabrication process for multi-layer metal, multi-site, polymer-based neural probes. The process has been used to generate 1-, 2-, and 4-layer trace metal neural probes with highly uniform and reproducible electrode characteristics. Typically, increasing the number of metal layers is assumed to both reduce the width of the neural probes and minimize the injury and glial scarring caused at the implantation site. We show, however, that increasing the number of trace metal layers does not always result in the minimal probe cross-sectional area. A thorough design analysis reveals that the electrode size, along with other design parameters, have interacting effects on the probe cross-sectional area. Moreover, increasing the trace metal layers in the neural probes also increases the design and fabrication cost/time, as well as the likelihood of probe failure. Consequently, all of these factors must be considered when designing a multi-site, neural probe with the objective of minimizing tissue damage.
C1 [Tooker, Angela] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Tooker, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM tooker1@llnl.gov; tolosa1@llnl.gov; shah22@llnl.gov; sheth2@llnl.gov;
felix5@llnl.gov; delima1@llnl.gov; pannu1@llnl.gov
NR 9
TC 6
Z9 6
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 5995
EP 5998
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296506049
ER
PT S
AU Tooker, A
Tolosa, V
Shah, KG
Sheth, H
Felix, S
Delima, T
Pannu, S
AF Tooker, Angela
Tolosa, Vanessa
Shah, Kedar G.
Sheth, Heeral
Felix, Sarah
Delima, Terri
Pannu, Satinderpall
GP IEEE
TI Polymer Neural Interface with Dual-Sided Electrodes for Neural
Stimulation and Recording
SO 2012 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE
AND BIOLOGY SOCIETY (EMBC)
SE IEEE Engineering in Medicine and Biology Society Conference Proceedings
LA English
DT Proceedings Paper
CT 34th Annual International Conference of the IEEE
Engineering-in-Medicine-and-Biology-Society (EMBS)
CY AUG 28-SEP 01, 2012
CL San Diego, CA
SP IEEE, Engn Med & Biol Soc (EMBS), CAS, SMC, PubMed, MEDLINE
ID BRAIN-TISSUE; POLYIMIDE
AB We present here a demonstration of a dual-sided, 4-layer metal, polyimide-based electrode array suitable for neural stimulation and recording. The fabrication process outlined here utilizes simple polymer and metal deposition and etching steps, with no potentially harmful backside etches or long exposures to extremely toxic chemicals. These polyimide-based electrode arrays have been tested to ensure they are fully biocompatible and suitable for long-term implantation; their flexibility minimizes the injury and glial scarring that can occur at the implantation site. The creation of dual-side electrode arrays with more than two layers of trace metal enables the fabrication of neural probes with more electrodes without a significant increase in probe size. This allows for more stimulation/recording sites without inducing additional injury and glial scarring.
C1 [Tooker, Angela] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Tooker, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM tooker1@llnl.gov; tolosa1@llnl.gov; shah22@llnl.gov; sheth2@llnl.gov;
felix5@llnl.gov; delima1@llnl.gov; pannu1@llnl.gov
NR 19
TC 6
Z9 6
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1557-170X
BN 978-1-4577-1787-1
J9 IEEE ENG MED BIO
PY 2012
BP 5999
EP 6002
PG 4
WC Engineering, Biomedical; Engineering, Electrical & Electronic
SC Engineering
GA BDH78
UT WOS:000313296506050
ER
PT S
AU Miller, JM
White, CP
Onar, OC
Ryan, PM
AF Miller, John M.
White, Clifford P.
Onar, Omer C.
Ryan, Philip M.
GP IEEE
TI GRID SIDE REGULATION OF WIRELESS POWER CHARGING OF PLUG-IN ELECTRIC
VEHICLES
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB Conductive charging of plug-in and battery electric vehicles (PEV's) is now well established and becoming more pervasive in the market. Conductive charger regulation of vehicle regenerative energy storage system (RESS), or battery pack charge rate is controlled by the dedicated on-board-charger (OBC) in coordination with the vehicles battery management system (BMS). Wireless Power Transfer (WPT) charging of PEV's is a relatively new and emerging technology that will not benefit from standardization work until 2014 or later. As such, various approaches are currently underway to manage the power flow from the grid-tied high frequency power inverter to the vehicle RESS. WPT regulation approaches can be secondary side only, primary side only or a combination of both. In this paper Oak Ridge National Laboratory (ORNL) envisions a system that is fast charge compatible and that minimizes the vehicle on board complexity by placing the burden of power regulation on the grid side converter. This paper summarizes the ORNL approach and experimental lessons learned at the National Transportation Research Center WPT laboratory(1).
C1 [Miller, John M.; White, Clifford P.; Onar, Omer C.] Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37831 USA.
[Ryan, Philip M.] Oak Ridge Natl Lab, Fusion Energy Div, Oak Ridge, TN 37830 USA.
RP Miller, JM (reprint author), Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37831 USA.
EM millerjm@ornl.gov
FU ORNL's National Laboratory's National Transportation Research Center, in
Knoxville, TN
FX The authors with to acknowledge the able assistance of Chester Coomer
and Steven Campbell for fabricating the coupling coils and fixtures and
P. T. Jones and Paul Chambon for their able assistance in vehicle
systems aspects of this program at ORNL's National Laboratory's National
Transportation Research Center, in Knoxville, TN.
NR 19
TC 15
Z9 15
U1 0
U2 10
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 261
EP 268
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901700037
ER
PT S
AU Liang, ZX
Ning, PQ
Wang, F
Marlino, L
AF Liang, Zhenxian
Ning, Puqi
Wang, Fred
Marlino, Laura
GP IEEE
TI Planar Bond All: A New Packaging Technology for Advanced Automotive
Power Modules
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB A novel packaging structure for liquid cooled automotive power modules is developed. It features sandwiching power semiconductor switches between two symmetric substrates, which serve electrical interconnection and insulation. Two mini coolers are directly bonded to the outside of these substrates, allowing double sided, integrated cooling. The power switches in a popular phase leg electrical topology are orientated in a face up/face down three-dimensional (3-D) interconnection configuration. The bonding areas between dies and substrates, substrates and coolers are designed to use identical materials and formed in one heating process, in which a special fixture has been made so that a high efficiency production can be implemented. Combining these features with the thermal and electrical advancements, this packaging technology offers dramatically comprehensive improvements in power module's cost effectiveness, electrical conversion efficiency and thermal management, as demonstrated by a planar bond packaged prototype of a 200A/1200V phase leg power module.
C1 [Liang, Zhenxian; Ning, Puqi; Wang, Fred; Marlino, Laura] Oak Ridge Natl Lab, Energy & Transportat Div, Knoxville, TN 37831 USA.
RP Liang, ZX (reprint author), Oak Ridge Natl Lab, Energy & Transportat Div, Knoxville, TN 37831 USA.
EM Liangz@ornl.gov
OI Liang, Zhenxian/0000-0002-2811-0944
NR 14
TC 6
Z9 6
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 438
EP 443
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901700063
ER
PT S
AU Burress, T
Ayers, C
AF Burress, Tim
Ayers, Curt
GP IEEE
TI Development and Experimental Characterization of a Multiple Isolated
Flux Path Reluctance Machine
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB This paper presents an unconventional type of doubly-salient reluctance machine with Multiple Isolated Flux Paths (MIFPs) that has reduced eddy current and hysteresis losses and several other advantages that improve the power and/or torque density over that of comparably sized conventional reluctance machines. The design also offers the potential to reduce torque ripple and acoustic noise emission. A custom simulator was developed to carry out FEA-based geometric optimization and a second nonlinear parametric simulator was developed to conduct control optimization with consideration of impacts from mutual coupling between phases. Although design constraints were based upon vehicle propulsion applications, the machine is scalable and is well-suited for a wide range of applications. Using machine dimensions similar to that of the 2nd generation Toyota Prius, the projected performance of the machine indicates that the MIFP reluctance machine is capable of producing over 50 kW with less than 5% torque ripple using ripple mitigation techniques. In addition to simulation results, this paper also includes experimental results of the MIFP machine on a dynamometer at up to 23.4 kW.
C1 [Burress, Tim; Ayers, Curt] Oak Ridge Natl Lab, Power Elect & Elect Machines Res Grp, Oak Ridge, TN USA.
RP Burress, T (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machines Res Grp, Oak Ridge, TN USA.
EM burressta@ornl.gov; ayerscw@ornl.gov
NR 10
TC 0
Z9 0
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 899
EP 905
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901701024
ER
PT S
AU Miller, JM
Ayers, CW
Seiber, LE
Smith, DB
AF Miller, John M.
Ayers, Curtis W.
Seiber, Larry E.
Smith, D. Barton
GP IEEE
TI CALORIMETER EVALUATION OF INVERTER GRADE METALIZED FILM CAPACITOR ESR
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
ID LOSSES
AB The capacitor industry requires fast and accurate characterization of component equivalent series resistance (ESR) and capacitance (C). In a manufacturing setting the measurements must be very fast, repeatable and high quality for use in process control, data collection and monitoring, plus for printing on the component SKU label. The fastest characterization testing is done electronically using pulse techniques and these must provide accurate assessment of the true parameter values. In this work a calorimeter method was developed to corroborate ESR values obtained using a recently developed electronic ESR characterization method at ORNL. Calorimeter measurements are very slow, tedious and subject to error if chamber inlet air is not properly conditioned. It was found that the provisional coplanar bus plate used for mounting a power ring high current capacitor introduced frequency dependence in ESR results that electronic measurement techniques did not incur. The calorimeter method lends itself well to parameter characterization under real world application conditions at rated current, frequency and wave shape(1).
C1 [Miller, John M.; Ayers, Curtis W.; Seiber, Larry E.] Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37831 USA.
RP Miller, JM (reprint author), Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37831 USA.
EM millerjm@ornl.gov; smithdb@ornl.gov
NR 11
TC 5
Z9 5
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 2157
EP 2163
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901702053
ER
PT S
AU Xu, Y
Li, HJ
Tolbert, LM
AF Xu, Yan
Li, Huijuan
Tolbert, Leon M.
GP IEEE
TI Inverter-Based Microgrid Control and Stable Islanding Transition
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB A hybrid microgrid control architecture is proposed, which combines centralized control and distributed control to achieve a fully-functional microgrid control strategy. A complete model of the microgrid has been built. Coordination and power sharing strategies have been developed for the inverters and microgrid controller, and the microgrid can be operated in on-grid mode and islanding mode, and is able to transition between the two modes smoothly with minimum load disruption and shedding during transitions. A multi-input proportional-integral control is proposed to eliminate the transients caused by the inverter control mode transition. In islanding mode, secondary frequency and voltage control strategies are proposed besides droop control methods. Assisted with the microgrid controller and the communication between the microgrid controller and the individual source and load, the microgrid can achieve optimized power flow and energy utilization, and the system efficiency can also be improved.
C1 [Xu, Yan; Li, Huijuan] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Xu, Y (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM xuy3@ornl.gov; lih3@ornl.gov; tolbert@utk.edu
OI Tolbert, Leon/0000-0002-7285-609X
NR 15
TC 6
Z9 6
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 2374
EP 2380
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901702082
ER
PT S
AU Su, GJ
Tang, LX
AF Su, Gui-Jia
Tang, Lixin
GP IEEE
TI A Segmented Traction Drive System with a Small dc Bus Capacitor
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
ID PWM; CONVERTERS
AB The standard voltage source inverter (VSI), widely used in electric vehicle/hybrid electric vehicle (EV/HEV) traction drives, requires a bulky dc bus capacitor, typically made of polypropylene films, to absorb the large ripple currents generated by the pulse width modulated switching actions and prevent them from damaging and shortening the battery's life. The dc bus capacitor presents a significant barrier to meeting the U.S. DRIVE targets for cost, volume, and weight for inverters. Currently the dc bus capacitor contributes up to 20% of the cost and weight of an inverter and up to 30% of an inverter's volume. The large ripple currents become even more problematic for the film capacitors (the capacitor technology of choice for EVs/HEVs) in high temperature environments as their ripple current handling capability decreases rapidly with rising temperatures. There is thus an urgent need to reduce the ripple currents. This paper presents a segmented traction drive system that can significantly decrease the ripple currents and thus the size of the dc bus capacitor.
C1 [Su, Gui-Jia; Tang, Lixin] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Knoxville, TN USA.
RP Su, GJ (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Knoxville, TN USA.
EM sugj@ornl.gov
NR 12
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 2873
EP 2879
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901703013
ER
PT S
AU Wang, XY
Yue, M
Muljadi, E
AF Wang, Xiaoyu
Yue, Meng
Muljadi, Eduard
GP IEEE
TI Modeling and Control System Design for an Integrated Solar Generation
and Energy Storage System with a Ride-through Capability
SO 2012 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE)
SE IEEE Energy Conversion Congress and Exposition
LA English
DT Proceedings Paper
CT IEEE Energy Conversion Congress and Exposition (ECCE)
CY SEP 15-20, 2012
CL Raleigh, NC
SP IEEE, IEEE Ind Applicat Soc, IEEE Power Elect Soc
AB This paper presents a generic approach for PV panel modeling. Data for this modeling can be easily obtained from manufacturer datasheet, which provides a convenient way for the researchers and engineers to investigate the PV integration issues. A two-stage power conversion system (PCS) is adopted in this paper for the PV generation system and a Battery Energy Storage System (BESS) can be connected to the dc-link through a bi-directional dc/dc converter. In this way, the BESS can provide some ancillary services which may be required in the high penetration PV generation scenario. In this paper, the fault ride-through (FRT) capability is specifically focused. The integrated BESS and PV generation system together with the associated control systems is modeled in PSCAD and Matlab platforms and the effectiveness of the controller is validated by the simulation results.
C1 [Wang, Xiaoyu; Yue, Meng] Brookhaven Natl Lab, Dept Sustainable Energy Technol, Upton, NY 11973 USA.
RP Wang, XY (reprint author), Brookhaven Natl Lab, Dept Sustainable Energy Technol, Upton, NY 11973 USA.
EM xywang@bnl.gov; yuemeng@bnl.gov; Eduard_muljadi@nrel.gov
NR 19
TC 5
Z9 5
U1 1
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2329-3721
BN 978-1-4673-0801-4
J9 IEEE ENER CONV
PY 2012
BP 3727
EP 3734
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDE00
UT WOS:000312901703130
ER
PT S
AU Campos, E
AF Campos, Edwin
BE Moore, RJ
Cole, SJ
Illingworth, AJ
TI Estimating weather radar coverage over complex terrain
SO WEATHER RADAR AND HYDROLOGY
SE IAHS Publication
LA English
DT Proceedings Paper
CT International Symposium on Weather Radar and Hydrology
CY APR 18-21, 2011
CL Univ Exeter, Exeter, ENGLAND
HO Univ Exeter
DE beam propagation; terrain blockage; surveillance area
ID NEGATIVE ELEVATION ANGLES; MOUNTAINTOP WSR-88DS; SIMULATION
AB Minimizing terrain blockage is a basic consideration when assessing the efficacy of weather radar sites. A numerical model for simulating surveillance coverage of weather radars in mountain terrains is presented. As input, the simulation uses a high-resolution terrain digital model; weather radar parameters; and radiosonde observations of the vertical profile of temperature, pressure, and vapour mixing ratio. The coverage model is validated using observations from Environment Canada's C-band weather radar located at Mt Sicker (British Columbia, Canada).
C1 Argonne Natl Lab, Div Environm Sci, Argonne, IL 60439 USA.
RP Campos, E (reprint author), Argonne Natl Lab, Div Environm Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM ecampos@anl.gov
NR 11
TC 0
Z9 0
U1 0
U2 0
PU INT ASSOC HYDROLOGICAL SCIENCES
PI WALLINGFORD
PA INST OF HYDROLOGY, WALLINGFORD OX10 8BB, ENGLAND
SN 0144-7815
BN 978-1-907161-26-1
J9 IAHS-AISH P
PY 2012
VL 351
BP 26
EP 32
PG 7
WC Meteorology & Atmospheric Sciences; Water Resources
SC Meteorology & Atmospheric Sciences; Water Resources
GA BDK63
UT WOS:000313597100005
ER
PT S
AU Kallman, RA
Barilo, NF
Murphy, WF
AF Kallman, R. A.
Barilo, N. F.
Murphy, W. F.
GP JPdL International
TI Permitting of a Project Involving Hydrogen: A Code Official's
Perspective
SO WHEC 2012 CONFERENCE PROCEEDINGS - 19TH WORLD HYDROGEN ENERGY CONFERENCE
SE Energy Procedia
LA English
DT Proceedings Paper
CT 19th World Hydrogen Energy Conference (WHEC)
CY JUN 03-07, 2012
CL Toronto, CANADA
DE hydrogen safety; permitting; fuel cell applications; refueling stations;
stationary applications; authority having; jurisdiction
AB Recent growth in the development of hydrogen infrastructure has led to more requests for code officials to approve hydrogen-related projects and facilities. To help expedite the review and approval process, significant efforts have been made to educate code officials on permitting hydrogen vehicle fueling stations and facilities using stationary fuel cells (e.g., backup power for telephone cell tower sites). Despite these efforts, project delays continue because of several factors, including the limited experience of code officials with these types of facilities, submittals that lack the required information (including failure to adequately address local requirements), and submission of poor quality documents. The purpose of this paper is to help project proponents overcome these potential roadblocks and obtain timely approval for a project. A case study of an actual stationary application permitting request is provided to illustrate the value of addressing these issues. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Canadian Hydrogen and Fuel Cell Association.
C1 [Kallman, R. A.] City Santa Fe Springs, Dept Fire Rescue, 11300 Greenstone Ave, Santa Fe Springs, CA 90670 USA.
[Murphy, W. F.] Consultant, Whittier, CA 90604 USA.
[Barilo, N. F.] Pacif NW Natl Lab, Richland, WA 99354 USA.
RP Kallman, RA (reprint author), City Santa Fe Springs, Dept Fire Rescue, 11300 Greenstone Ave, Santa Fe Springs, CA 90670 USA.
EM richardkallman@santafesprings.org
NR 5
TC 0
Z9 0
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6102
J9 ENRGY PROCED
PY 2012
VL 29
BP 265
EP 275
DI 10.1016/j.egypro.2012.09.032
PG 11
WC Energy & Fuels
SC Energy & Fuels
GA BDN48
UT WOS:000314022200031
ER
PT S
AU Miller, EL
AF Miller, Eric L.
GP JPdL International
TI IEA-HIA Task 26 research and development progress in renewable hydrogen
production through photoelectrochemical water splitting
SO WHEC 2012 CONFERENCE PROCEEDINGS - 19TH WORLD HYDROGEN ENERGY CONFERENCE
SE Energy Procedia
LA English
DT Proceedings Paper
CT 19th World Hydrogen Energy Conference (WHEC)
CY JUN 03-07, 2012
CL Toronto, CANADA
DE Fuel Cells; Hydrogen; Photoelectrochemical; Production
AB Photoelectrochemical (PEC) hydrogen production, using sunlight to directly split water, is one of the key enabling technologies for a future where hydrogen is widely deployed as an energy carrier. However, the "traditional" semiconductor-based PEC material systems studied to date, including simple metal oxides such as TiO2, WO3 and Fe2O3, have not been successful in meeting all the performance, durability and cost requirements for practical hydrogen production. Technology-enabling advances in the development of new, advanced PEC materials and systems have been needed. Toward this end, the International Energy Agency's Hydrogen Implementation Agreement (IEA-HIA) Task-26, working in close conjunction with "Working Group on PEC Hydrogen Production" in the Fuel Cell Technology Program at the U. S. Department of Energy, has brought together experts in materials theory, synthesis, characterization and analysis from research sectors across the world. This endeavor has resulted in exciting recent progress over a broad range of PEC materials classes, including high efficiency crystalline semiconductors (e.g., III-V materials), promising thin-film semiconductors (including Fe2O3-, WO3-, and CuGaSe2-based films), novel photocatalyst powders (such as Cs-Modified WO3) and innovative photocatalyst nano-particles (e.g., MoS2). The research and development progress in these important PEC materials classes will be summarized, and key implications discussed. (c) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Canadian Hydrogen and Fuel Cell Association
C1 US DOE, Washington, DC 20585 USA.
RP Miller, EL (reprint author), US DOE, 1000 Independence Ave SW, Washington, DC 20585 USA.
EM eric.miller@ee.doe.gov
NR 15
TC 2
Z9 2
U1 1
U2 20
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6102
J9 ENRGY PROCED
PY 2012
VL 29
BP 438
EP 444
DI 10.1016/j.egypro.2012.09.051
PG 7
WC Energy & Fuels
SC Energy & Fuels
GA BDN48
UT WOS:000314022200050
ER
PT S
AU Nakano, A
Maeda, T
Ito, H
Motyka, T
Perez-Berrios, JM
Greenway, S
AF Nakano, Akihiro
Maeda, Tetsuhiko
Ito, Hiroshi
Motyka, Theodore
Perez-Berrios, Jose M.
Greenway, Scott
GP JPdL International
TI Experimental Study on a Metal Hydride Tank for the Totalized Hydrogen
Energy Utilization System
SO WHEC 2012 CONFERENCE PROCEEDINGS - 19TH WORLD HYDROGEN ENERGY CONFERENCE
SE Energy Procedia
LA English
DT Proceedings Paper
CT 19th World Hydrogen Energy Conference (WHEC)
CY JUN 03-07, 2012
CL Toronto, CANADA
DE Mtal hydride Tank; Hydrogen storeage; Stress measurement; Reaction heat;
Absorption; Desorption
ID STORAGE
AB We have been performing research on a Totalized Hydrogen Energy Utilization System (THEUS) which is composed of a Unitized Reversible Fuel Cell (URFC) and metal hydride tanks. THEUS is very similar to the regenerative fuel cell system located at the Savannah River National Laboratory (SRNL) but it utilizes the thermal energy from the system to improve the total system efficiency. AIST and SRNL started a collaborative research program on THEUS in 2010 under the Clean Energy Partnership Technology Program between METI and DOE. To initiate the project, a horizontal type metal hydride tank was developed. It had a double coil type heat exchanger and contained 50 kg of AB5 type metal hydride alloy. Absorption and desorption of 6,350 NL of hydrogen was successfully attained at an absorption rate of 11.8 NL/min and a desorption rate of 8.1 NL/min. The experimental results of the heat exchanging performance were compared with the results of a vertical type metal hydride tank which was developed in AIST in 2008. This paper introduces the experimental results of the metal hydride tank which is tested in SRNL. (c) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Canadian Hydrogen and Fuel Cell Association
C1 [Nakano, Akihiro; Maeda, Tetsuhiko; Ito, Hiroshi] Natl Inst Adv Ind Sci & Technol, 1-2-1 Namiki Tsukuba E, Tsukuba, Ibaraki 3058564, Japan.
[Motyka, Theodore] Savannah River Natl Lab SRNL, Aiken, SC 29808 USA.
[Perez-Berrios, Jose M.; Greenway, Scott] Greeway Energy LLC, Aiken, SC 29803 USA.
RP Nakano, A (reprint author), Natl Inst Adv Ind Sci & Technol, 1-2-1 Namiki Tsukuba E, Tsukuba, Ibaraki 3058564, Japan.
EM a.nakano@aist.go.jp
FU METI; DOE
FX This study was supported from the Clean Energy Partnership Technology
Program between METI and DOE. Authors also acknowledge to Prof. E. Akiba
in Kyusyu University, Dr. D. Anton, Dr. R. Zidan, Mr. B. Calloway, Dr.
C. Corgnale in SRNL, and Mr. F. E. Humes in CHR for fruitful discussion.
And we also wish to thank Mrs. S. Takagi for her very helpful
assistance.
NR 5
TC 6
Z9 6
U1 1
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6102
J9 ENRGY PROCED
PY 2012
VL 29
BP 463
EP 468
DI 10.1016/j.egypro.2012.09.054
PG 6
WC Energy & Fuels
SC Energy & Fuels
GA BDN48
UT WOS:000314022200053
ER
PT B
AU Garlapati, S
Volos, HI
Kuruganti, T
Buehrer, MR
Reed, JH
AF Garlapati, Shravan
Volos, Haris I.
Kuruganti, Teja
Buehrer, Michael R.
Reed, Jeffrey H.
GP IEEE
TI PHY and MAC Layer Design of Hybrid Spread Spectrum Based Smart Meter
Network
SO 2012 IEEE 31ST INTERNATIONAL PERFORMANCE COMPUTING AND COMMUNICATIONS
CONFERENCE (IPCCC)
LA English
DT Proceedings Paper
CT 31st IEEE International Performance Computing and Communications
Conference (IPCCC)
CY DEC 01-03, 2012
CL Austin, TX
SP IEEE Comp Soc, IEEECS TCSIM, IEEE
DE AMI; Hybrid Spread Spectrum; PHY; MAC
AB The selection of the appropriate communication technology for different smart grid applications has drawn a great attention in the recent past. In this paper, we propose a Hybrid Spread Spectrum (HSS) based Advanced smart Metering Infrastructure (AMI) that reduces the overhead and latency in data transfer when compared to the use of 3G/4G technologies for smart meter data collection. We present a preliminary PHY and MAC layer design of a HSS based AMI network and evaluate their performance using matlab and NS2 simulations.
C1 [Garlapati, Shravan; Volos, Haris I.; Buehrer, Michael R.; Reed, Jeffrey H.] Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA 24060 USA.
[Kuruganti, Teja] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
RP Garlapati, S (reprint author), Virginia Tech, Dept Elect & Comp Engn, Blacksburg, VA 24060 USA.
EM gshra09@vt.edu; hvolos@vt.edu; kurugantipv@ornl.gov; buehrer@vt.edu;
reedjh@vt.edu
FU LLC [DE-AC05-00OR22725]
FX This paper has been co-authored by employees of UTBattelle, LLC, under
contract DE-AC05-00OR22725 with the U. S. Department of Energy.
Accordingly, the United States Government retains and the publisher, by
accepting the article for publication, acknowledges that the United
States Government retains a nonexclusive, paid- up, irrevocable,
worldwide license to publish or reproduce the published form of this
manuscript, or allow others to do so, for United States Government
purposes.
NR 3
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-4883-6; 978-1-4673-4881-2
PY 2012
BP 183
EP +
PG 2
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BDJ12
UT WOS:000313524400022
ER
PT S
AU Davis, JN
Miara, LJ
Saraf, L
Kaspar, TC
Gopalan, S
Pal, UB
Woicik, JC
Basu, SN
Ludwig, KF
AF Davis, J. N.
Miara, L. J.
Saraf, L.
Kaspar, T. C.
Gopalan, S.
Pal, U. B.
Woicik, J. C.
Basu, S. N.
Ludwig, K. F.
BE Doeff, M
Dudney, N
Manivannan, A
Narayan, SR
TI Hard X-ray Fluorescence Measurements of Heteroepitaxial Solid Oxide Fuel
Cell Cathode Materials
SO BATTERY/ENERGY TECHNOLOGY (GENERAL) - 220TH ECS MEETING
SE ECS Transactions
LA English
DT Proceedings Paper
CT Symposium on Battery/Energy Technology Joint General Session Held During
the 220th Meeting of the Electrochemical-Society (ECS)
CY OCT 09-14, 2011
CL Boston, MA
SP Electrochemical Soc (ECS), Battery, Energy Technol (ETD)
AB Strontium doped lanthanum manganite (La0.8Sr0.2)(0.95)MnO3 (LSM) and lanthanum strontium cobalt ferrite La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) thin films were grown by pulsed laser deposition (PLD) on single crystal substrates. Total X-ray Reflection Fluorescence (TXRF) reveals the evolution of surface composition due to annealing at 800 degrees C. X-ray Absorption Near Edge Spectroscopy (XANES) provides insight into the local electronic structure of the cations. LSM manganese concentration is higher at the surface than in the bulk in as-deposited films. Annealing further enhances surface manganese segregation and irreversibly changes the manganese XANES spectra. Surface strontium is greatly enhanced in LSCF samples quenched from 800 degrees C, however the strontium is reabsorbed into the film when allowed to cool slowly.
C1 [Davis, J. N.; Miara, L. J.; Gopalan, S.; Pal, U. B.; Basu, S. N.; Ludwig, K. F.] Boston Univ, Div Mat Sci & Engn, Brookline, MA 02446 USA.
[Gopalan, S.; Pal, U. B.; Basu, S. N.] Boston Univ, Dept Mech Engn, Boston, MA 02215 USA.
[Saraf, L.; Kaspar, T. C.; Ludwig, K. F.] PNNL, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Woicik, J. C.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
[Ludwig, K. F.] Boston Univ, Dept Phys, Boston, MA 02215 USA.
RP Davis, JN (reprint author), Boston Univ, Div Mat Sci & Engn, Brookline, MA 02446 USA.
FU DOE SECA [DE-NT000410]; Department of Energy's Office of Biological and
Environmental Research; U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences [DE-AC02-98CH10886]
FX This work is supported through the DOE SECA program under Grant
DE-NT000410. A portion of the research was performed using EMSL, a
national scientific user facility sponsored by the Department of
Energy's Office of Biological and Environmental Research and located at
Pacific Northwest National Laboratory. Use of the National Synchrotron
Light Source, Brookhaven National Laboratory, was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-98CH10886.
NR 2
TC 3
Z9 3
U1 0
U2 17
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 S MAIN ST, PENNINGTON, NJ 08534-2839 USA
SN 1938-5862
BN 978-1-56677-943-2
J9 ECS TRANSACTIONS
PY 2012
VL 41
IS 11
BP 19
EP 24
DI 10.1149/1.3687387
PG 6
WC Electrochemistry
SC Electrochemistry
GA BDM06
UT WOS:000313719500003
ER
PT J
AU Bailey, DH
Borwein, JM
Calude, CS
Dinneen, MJ
Dumitrescu, M
Yee, A
AF Bailey, David H.
Borwein, Jonathan M.
Calude, Cristian S.
Dinneen, Michael J.
Dumitrescu, Monica
Yee, Alex
TI An Empirical Approach to the Normality of pi
SO EXPERIMENTAL MATHEMATICS
LA English
DT Article
DE 11K16; 65-05; 68Q30; normal real; normal string; pi; Poisson process
AB Using the results of several extremely large recent computations [Yee and Kondo 11], we tested positively the normality of a prefix of roughly four trillion hexadecimal digits of p. This result was used by a Poisson process model of normality of p: in this model, it is extraordinarily unlikely that p is not asymptotically normal base 16, given the normality of its initial segment.
C1 [Bailey, David H.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Borwein, Jonathan M.] Univ Newcastle, Ctr Comp Assisted Res Math & Its Applicat CARMA, Callaghan, NSW 2308, Australia.
[Calude, Cristian S.; Dinneen, Michael J.] Univ Auckland, Dept Comp Sci, Auckland 1, New Zealand.
[Dumitrescu, Monica] Univ Bucharest, Fac Math & Comp Sci, Bucharest, Romania.
[Yee, Alex] Univ Illinois, Urbana, IL USA.
RP Bailey, DH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM dhbailey@lbl.gov; jonathan.borwein@newcastle.edu.au;
cristian@cs.auckland.ac.nz; mjd@cs.auckland.ac.nz; mdumi@fmi.unibuc.ro;
a-yee@u.northwestern.edu
OI Calude, Cristian Sorin/0000-0002-8711-6799; Borwein,
Jonathan/0000-0002-1263-0646
FU Office of Computational and Technology Research, Division of
Mathematical, Information, and Computational Sciences of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX Thanks are due to Dr. Francisco Aragon for his generous assistance with
the pictures of random walks. David. H. Bailey was supported in part by
the Director, Office of Computational and Technology Research, Division
of Mathematical, Information, and Computational Sciences of the U.S.
Department of Energy, under contract number DE-AC02-05CH11231.
NR 17
TC 5
Z9 5
U1 3
U2 16
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
SN 1058-6458
J9 EXP MATH
JI Exp. Math.
PY 2012
VL 21
IS 4
BP 375
EP 384
DI 10.1080/10586458.2012.665333
PG 10
WC Mathematics
SC Mathematics
GA 071SL
UT WOS:000313614400005
ER
PT S
AU Scott, S
Nordquist, CD
Cich, MJ
Jordan, TS
Rodenbeck, CT
AF Scott, Sean
Nordquist, Christopher D.
Cich, Michael J.
Jordan, Tyler S.
Rodenbeck, Christopher T.
GP IEEE
TI A Frequency Selective Surface with Integrated Limiter for Receiver
Protection
SO 2012 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM
(APSURSI)
SE IEEE Antennas and Propagation Society International Symposium
LA English
DT Proceedings Paper
CT IEEE International Symposium on Antennas and Propagation
CY JUL 08-14, 2012
CL Chicago, IL
SP Inst Electr Electron Engineers, IEEE Antennas & Propaga Soc
AB The design and simulation of a frequency selective surface (FSS) with integrated limiter for receiver-protection are presented. The FSS operates as normal until a certain power threshold is reached, at which point the temperature increase triggers a dramatic resistance change across the element, and the insertion loss changes from 0.2 dB to 20 dB. The limiting action is completely passive and automatically reversible. By placing the limiter outside of the system, no portion of the front-end risks damage from high-power signals, a level of protection not offered in conventional limiters. Finally, the design is compatible with standard lithography processes, requires no diodes, ferrites, or additional components, and can potentially be integrated on flexible substrates.
C1 [Scott, Sean; Nordquist, Christopher D.; Cich, Michael J.; Jordan, Tyler S.; Rodenbeck, Christopher T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Scott, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 6
TC 0
Z9 0
U1 1
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1522-3965
BN 978-1-4673-0462-7
J9 IEEE ANTENNAS PROP
PY 2012
PG 2
WC Engineering, Electrical & Electronic; Telecommunications
SC Engineering; Telecommunications
GA BDB29
UT WOS:000312442301093
ER
PT S
AU Anderson, HS
Parrish, N
Tsukida, K
Gupta, MR
AF Anderson, Hyrum S.
Parrish, Nathan
Tsukida, Kristi
Gupta, Maya R.
GP IEEE
TI RELIABLE EARLY CLASSIFICATION OF TIME SERIES
SO 2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL
PROCESSING (ICASSP)
SE International Conference on Acoustics Speech and Signal Processing
ICASSP
LA English
DT Proceedings Paper
CT IEEE International Conference on Acoustics, Speech and Signal Processing
CY MAR 25-30, 2012
CL Kyoto, JAPAN
SP Inst Elect & Elect Engineers, Signal Processing Soc, IEEE
DE classification; minorization; Pareto optimal
AB Early classification of time series is important in time-sensitive applications. An approach is presented for early classification using generative classifiers with the dual objectives of providing a class label as early as possible while guaranteeing with high probability that the early class matches the class that would be assigned to a longer time series. We give a specific algorithm for early quadratic discriminant analysis (QDA), and demonstrate that this classifier meets the requirement of reliable early classification.
C1 [Anderson, Hyrum S.] Sandia Natl Labs, Albuquerque, NM 87123 USA.
RP Anderson, HS (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA.
NR 5
TC 1
Z9 1
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1520-6149
BN 978-1-4673-0046-9
J9 INT CONF ACOUST SPEE
PY 2012
BP 2073
EP 2076
PG 4
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BDA84
UT WOS:000312381402043
ER
PT S
AU Wohlberg, B
Chartrand, R
Theiler, J
AF Wohlberg, Brendt
Chartrand, Rick
Theiler, James
GP IEEE
TI LOCAL PRINCIPAL COMPONENT PURSUIT FOR NONLINEAR DATASETS
SO 2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL
PROCESSING (ICASSP)
SE International Conference on Acoustics Speech and Signal Processing
ICASSP
LA English
DT Proceedings Paper
CT IEEE International Conference on Acoustics, Speech and Signal Processing
CY MAR 25-30, 2012
CL Kyoto, JAPAN
SP Inst Elect & Elect Engineers, Signal Processing Soc, IEEE
DE Compressive Sensing; Robust Principal Component Analysis; Low Rank;
Sparse Representation; Group Sparse
AB A robust version of Principal Component Analysis (PCA) can be constructed via a decomposition of a data matrix into low rank and sparse components, the former representing a low-dimensional linear model of the data, and the latter representing sparse deviations from the low-dimensional subspace. This decomposition has been shown to be highly effective, but the underlying model is not appropriate when the data are not modeled well by a single low-dimensional subspace. We construct a new decomposition corresponding to a more general underlying model consisting of a union of low-dimensional subspaces, and demonstrate the performance on a video background removal problem.
C1 [Wohlberg, Brendt; Chartrand, Rick; Theiler, James] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Wohlberg, B (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
RI Wohlberg, Brendt/M-7764-2015;
OI Wohlberg, Brendt/0000-0002-4767-1843; Chartrand,
Rick/0000-0003-3256-2238
NR 11
TC 16
Z9 16
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1520-6149
BN 978-1-4673-0046-9
J9 INT CONF ACOUST SPEE
PY 2012
BP 3925
EP 3928
PG 4
WC Acoustics; Engineering, Electrical & Electronic
SC Acoustics; Engineering
GA BDA84
UT WOS:000312381403248
ER
PT S
AU Ioannou, M
Hatzikraniotis, E
Lioutas, C
Chrissafis, K
Chung, DY
Paraskevopoulos, KM
Kyratsi, T
AF Ioannou, M.
Hatzikraniotis, E.
Lioutas, Ch.
Chrissafis, K.
Chung, D. Y.
Paraskevopoulos, K. M.
Kyratsi, Th.
BE Paraskevopoulos, KM
Hatzikraniotis, E
TI Sintering Process in Ball-Milled K2Bi8Se13 Nano-composites
SO 9TH EUROPEAN CONFERENCE ON THERMOELECTRICS (ECT2011)
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 9th European Conference on Thermoelectrics (ECT)
CY SEP 28-30, 2011
CL Thessaloniki, GREECE
SP Aristotle Univ Thessaloniki, Aristotle Univ Thessaloniki, Res Comm, NETZSCH-Geratebau GmbH BU Analyzing & Testing, Ulvac Technologies, Waste Heat Recovery Consortium Japan, Artemios Paschalidis S A
DE nanostructured; heat treatment; thermoelectric properties
ID BETA-K2BI8SE13
AB K2Bi8Se13 material has many attractive features for thermoelectric applications. Recently, K2Bi8Se13 based nanocomposite materials, consisting of nano-crystalline, micro-crystalline and amorphous phases, have been fabricated based on powder technology techniques. The Seebeck coefficient has been enhanced and the thermal conductivity has been decreased, thus presenting interesting behavior.
The study of the behavior of materials under different heat treatment conditions is of interest in terms of reversibility and stability of the structural features, as the application of sintering process is necessary for the development of thermoelectric modules. In this work, structural features, thermal and thermoelectric properties have been studied under heat treatment applied into K2Bi8Se13 nano-composites.
C1 [Ioannou, M.; Kyratsi, Th.] Univ Cyprus, Dept Mech & Mfg Engn, CY-1678 Nicosia, Cyprus.
[Hatzikraniotis, E.; Lioutas, Ch.; Chrissafis, K.; Paraskevopoulos, K. M.] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece.
[Chung, D. Y.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Ioannou, M (reprint author), Univ Cyprus, Dept Mech & Mfg Engn, CY-1678 Nicosia, Cyprus.
OI Chrissafis, Konstantinos/0000-0003-1546-8565; KYRATSI,
THEODORA/0000-0003-2916-1708
FU Cyprus Research Promotion Foundation's Framework Programme for Research;
Technological Development and Innovation [DESMI 2008]; Republic of
Cyprus; European Regional Development Fund; US DOE; Office of Science
[DE-AC02-06CH11357]; [ANABATHMISI/PAGIO/0308/17]
FX This work falls under the Cyprus Research Promotion Foundation's
Framework Programme for Research, Technological Development and
Innovation 2008 (DESMI 2008), co-funded by the Republic of Cyprus and
the European Regional Development Fund, and specifically under Grant
ANABATHMISI/PAGIO/0308/17. Dr. Chung was supported by the US DOE, Office
of Science under Contract No. DE-AC02-06CH11357.
NR 6
TC 0
Z9 0
U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1048-0
J9 AIP CONF PROC
PY 2012
VL 1449
BP 307
EP 310
DI 10.1063/1.4731558
PG 4
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA BDG85
UT WOS:000313173100075
ER
PT J
AU Morfin, JG
Nieves, J
Sobczyk, JT
AF Morfin, Jorge G.
Nieves, Juan
Sobczyk, Jan T.
TI Recent Developments in Neutrino/Antineutrino-Nucleus Interactions
SO ADVANCES IN HIGH ENERGY PHYSICS
LA English
DT Review
ID SCATTERING CROSS-SECTIONS; CTEQ PARTON DISTRIBUTIONS; VECTOR
COUPLING-CONSTANT; MESON-EXCHANGE CURRENTS; SINGLE PION-PRODUCTION;
NEUTRINO REACTIONS; NOMAD EXPERIMENT; PI(0) PRODUCTION; BETA-DECAY;
MODEL
AB Recent experimental results and developments in the theoretical treatment of neutrino-nucleus interactions in the energy range of 1-10 GeV are discussed. Difficulties in extracting neutrino-nucleon cross sections from neutrino-nucleus scattering data are explained and significance of understanding nuclear effects for neutrino oscillation experiments is stressed. Detailed discussions of the status of two-body current contribution in the kinematic region dominated by quasielastic scattering and specific features of partonic nuclear effects in weak DIS scattering are presented.
C1 [Morfin, Jorge G.; Sobczyk, Jan T.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA.
[Nieves, Juan] Ctr Mixto Univ Valencia CSIC, Inst Invest Paterna, Inst Fis Corpuscular IFIC, E-46071 Valencia, Spain.
RP Morfin, JG (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA.
EM morfin@fnal.gov
RI Nieves, Juan/K-2115-2014; Sobczyk, Jan/C-9761-2016
OI Nieves, Juan/0000-0002-2518-4606;
FU DGI; FEDER [FIS2011-28853-C02-02]; Spanish Consolider-Ingenio Programme
CPAN [CSD2007-00042]; Generalitat Valenciana [PROMETEO/2009/0090]; EU
[227431]; United States Department of Energy [De-AC02-07CH11359];
[NN202 368439]; [DWM/57/T2K/2007]
FX This research was supported by DGI and FEDER funds, under Contracts
FIS2011-28853-C02-02 and the Spanish Consolider-Ingenio 2010 Programme
CPAN (CSD2007-00042), by Generalitat Valenciana under Contract
PROMETEO/2009/0090, and by the EU HadronPhysics2 project, Grant
agreement no. 227431. J. T. Sobczyk (on leave from Wroclaw University
and partially supported by Grants NN202 368439 and DWM/57/T2K/2007)
thanks T. Golan for making Figure 1. Fermilab is operated by Fermi
Research Alliance, LLC under Contract no. De-AC02-07CH11359 with the
United States Department of Energy.
NR 136
TC 40
Z9 40
U1 0
U2 5
PU HINDAWI PUBLISHING CORPORATION
PI NEW YORK
PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
SN 1687-7357
J9 ADV HIGH ENERGY PHYS
JI Adv. High. Energy Phys.
PY 2012
AR 934597
DI 10.1155/2012/934597
PG 35
WC Physics, Particles & Fields
SC Physics
GA 065UO
UT WOS:000313175200001
ER
PT S
AU Johnson, JL
Agarwal, B
Whalen, DJ
Dalla Vecchia, C
Fryer, CL
Khochfar, S
Li, H
Livio, M
AF Johnson, Jarrett L.
Agarwal, Bhaskar
Whalen, Daniel J.
Dalla Vecchia, Claudio
Fryer, Christopher L.
Khochfar, Sadegh
Li, Hui
Livio, Mario
BE Umemura, M
Omukai, K
TI The Growth of the Stellar Seeds of Supermassive Black Holes
SO FIRST STARS IV - FROM HAYASHI TO THE FUTURE
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT Conference on FIRST STARS IV - From Hayashi to the Future
CY MAY 21-25, 2012
CL Kyoto, JAPAN
SP Univ Tsukuba, Ctr Computat Sci, Kyoto Univ, Yukawa Inst Theoret Phys, Univ Tokyo, Kavli Inst Phys & Math Universe, Japan Soc Promot Sci
DE black holes; supermassive stars; high redshift; galaxy formation
ID DARK-MATTER HALOES; COLLAPSE; STARS
AB One of the most promising explanations for the origin of the billion solar mass black holes (BHs) inferred to power quasars at redshifts z >= 6 is that supermassive stars (SMSs) with masses >= 10(4) M-circle dot collapse to form the seed BHs from which they grow. Here we review recent theoretical advances which provide support for this scenario. Firstly, given sufficiently high accretion rates of gas into the cores of primordial protogalaxies, it appears that neither the high energy radiation emitted from the stellar surface nor the limited lifetime of SMSs can prevent their growth to masses of up to >= 10(5) M-circle dot. Secondly, recent cosmological simulations suggest that the high fluxes of molecule-dissociating radiation which may be required in order to achieve such high accretion rates may be more common in the early universe than previously thought. We conclude that the majority of supermassive BHs may originate from SMSs at high redshifts.
C1 [Johnson, Jarrett L.; Whalen, Daniel J.; Fryer, Christopher L.; Li, Hui] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Johnson, Jarrett L.; Agarwal, Bhaskar; Dalla Vecchia, Claudio; Khochfar, Sadegh] Max Planck Inst Astrophys, D-85748 Garching, Germany.
[Whalen, Daniel J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Livio, Mario] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
RP Johnson, JL (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
FU LANL
FX JLJ thanks the organizers of First Stars IV for the opportunity to
present this work, much of which was generously supported by the LANL
LDRD program.
NR 12
TC 0
Z9 0
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1092-3
J9 AIP CONF PROC
PY 2012
VL 1480
BP 313
EP 316
DI 10.1063/1.4754374
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDH60
UT WOS:000313272200053
ER
PT S
AU Chen, KJ
Heger, A
Almgren, A
Woosley, S
AF Chen, Ke-Jung
Heger, Alexander
Almgren, Ann
Woosley, Stan
BE Umemura, M
Omukai, K
TI Fates of the Most Massive Primordial Stars
SO FIRST STARS IV - FROM HAYASHI TO THE FUTURE
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT Conference on FIRST STARS IV - From Hayashi to the Future
CY MAY 21-25, 2012
CL Kyoto, JAPAN
SP Univ Tsukuba, Ctr Computat Sci, Kyoto Univ, Yukawa Inst Theoret Phys, Univ Tokyo, Kavli Inst Phys & Math Universe, Japan Soc Promot Sci
DE Pop III Stars; Pair-Instability Supernovae
ID HYDRODYNAMICS; SUPERNOVAE; EVOLUTION; CASTRO
AB We present our results of numerical simulations of the most massive primordial stars. For the extremely massive non-rotating Pop III stars over 300 M-circle dot, they would simply die as black holes. But the Pop III stars with initial masses 140 - 260 M-circle dot may have died as gigantic explosions called pair-instability supernovae (PSNe). We use a new radiation-hydrodynamics code CASTRO to study evolution of PSNe. Our models follow the entire explosive burning and the explosion until the shock breaks out from the stellar surface. In our simulations, we find that fluid instabilities occurred during the explosion. These instabilities are driven by both nuclear burning and hydrodynamical instability. In the red supergiant models, fluid instabilities can lead to significant mixing of supernova ejecta and alter the observational signature.
C1 [Chen, Ke-Jung] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
[Heger, Alexander] Monash Univ, Montefiore Ctr Astrophys, Clayton, Vic 3800, Australia.
[Almgren, Ann] Ctr Comp Sci & Engn, LBNL, Berkeley, CA 94720 USA.
[Woosley, Stan] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95060 USA.
RP Chen, KJ (reprint author), Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.
EM chen1399@umn.edu; alex@physics.umn.edu
FU KITP; DOE [DOE- FC02- 01ER41176]
FX We thank Dan Kasen, Weiqun Zhang, Volker Bromm, and Lars Bildsten for
useful discussion. This work has been supported by KITP Graduate
Fellowship, DOE SciDAC grant, DOE- FC02- 01ER41176 and by the computing
resources from MSI and NERSC.
NR 10
TC 0
Z9 0
U1 0
U2 4
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1092-3
J9 AIP CONF PROC
PY 2012
VL 1480
BP 340
EP 342
DI 10.1063/1.4754380
PG 3
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDH60
UT WOS:000313272200059
ER
PT S
AU Heap, SA
Stancliffe, RJ
Lattanzio, JC
Dearborn, DSP
AF Heap, Stuart A.
Stancliffe, Richard J.
Lattanzio, John C.
Dearborn, David S. P.
BE Umemura, M
Omukai, K
TI Three-Dimensional Modelling of Proton Ingestion Episodes in Low-Mass
Stars
SO FIRST STARS IV - FROM HAYASHI TO THE FUTURE
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT Conference on FIRST STARS IV - From Hayashi to the Future
CY MAY 21-25, 2012
CL Kyoto, JAPAN
SP Univ Tsukuba, Ctr Computat Sci, Kyoto Univ, Yukawa Inst Theoret Phys, Univ Tokyo, Kavli Inst Phys & Math Universe, Japan Soc Promot Sci
DE Proton Ingestion; Stellar Evolution; Low-Mass; Intermediate-Mass;
Population III; Population II; Hydrodynamics
ID CORE HELIUM FLASH; POPULATION-III STARS; GIANTS
AB We have modelled a dual shell flash (DSF) in a low-metallicity 1.5M(circle dot) AGB star using the 3-dimensional hydrodynamic program "Djehuty", observing how the evolution of these events compares to 1-dimensional models, which are hypothesised to be inaccurate due to the simplifications in the treatment of convective processes. In particular, the stability of the separated convective structure following hydrogen ignition is investigated. In both models constructed, the split convective zone structure was found to be unstable, with the velocities within the inner convective zone increasing until material breaks through the gap and recombines the two regions into a large single convective region.
C1 [Heap, Stuart A.; Stancliffe, Richard J.; Lattanzio, John C.] Monash Univ, Monash Ctr Astrophys, Clayton, Vic 3800, Australia.
[Stancliffe, Richard J.] Mount Stromto Observ, Res Sch Astron & Astrophys, Weston, ACT, Australia.
[Dearborn, David S. P.] Lawrence Livermore Natl Lab, Lawrence, CA USA.
RP Heap, SA (reprint author), Monash Univ, Monash Ctr Astrophys, Clayton, Vic 3800, Australia.
EM stuart.heap@monash.edu; rjs@mso.anu.edu.au
OI Stancliffe, Richard/0000-0002-6972-9655
NR 6
TC 0
Z9 0
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1092-3
J9 AIP CONF PROC
PY 2012
VL 1480
BP 367
EP 369
DI 10.1063/1.4754389
PG 3
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDH60
UT WOS:000313272200068
ER
PT J
AU Kim, J
Reed, JL
AF Kim, Joonhoon
Reed, Jennifer L.
TI RELATCH: relative optimality in metabolic networks explains robust
metabolic and regulatory responses to perturbations
SO GENOME BIOLOGY
LA English
DT Article
ID ESCHERICHIA-COLI K-12; GENOME-SCALE RECONSTRUCTION; BACILLUS-SUBTILIS;
HIGH-THROUGHPUT; SACCHAROMYCES-CEREVISIAE; OPTIMAL-GROWTH; GENE
KNOCKOUT; EXPRESSION; FLUXES; PREDICTION
AB Predicting cellular responses to perturbations is an important task in systems biology. We report a new approach, RELATCH, which uses flux and gene expression data from a reference state to predict metabolic responses in a genetically or environmentally perturbed state. Using the concept of relative optimality, which considers relative flux changes from a reference state, we hypothesize a relative metabolic flux pattern is maintained from one state to another, and that cells adapt to perturbations using metabolic and regulatory reprogramming to preserve this relative flux pattern. This constraint-based approach will have broad utility where predictions of metabolic responses are needed.
C1 [Kim, Joonhoon; Reed, Jennifer L.] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
[Kim, Joonhoon; Reed, Jennifer L.] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI USA.
RP Reed, JL (reprint author), Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA.
EM reed@engr.wisc.edu
RI Reed, Jennifer/E-5137-2011; Kim, Joonhoon/E-6253-2012
OI Kim, Joonhoon/0000-0002-7425-1828
FU US Department of Energy Great Lakes Bioenergy Research Center (DOE BER
Office of Science) [DE-FC02-07ER64494]
FX We thank Nattapol Arunrattanamook for conducting the E. coli mutant
growth phenotyping experiments that were used in the comparison of
growth rate predictions. We also thank Wai Kit Ong for his help editing
the manuscript. This work was funded by the US Department of Energy
Great Lakes Bioenergy Research Center (DOE BER Office of Science
DE-FC02-07ER64494).
NR 51
TC 29
Z9 29
U1 1
U2 9
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1474-7596
J9 GENOME BIOL
JI Genome Biol.
PY 2012
VL 13
IS 9
AR R78
DI 10.1186/gb-2012-13-9-r78
PG 12
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 065XF
UT WOS:000313182600007
PM 23013597
ER
PT J
AU Meyer, F
Trimble, WL
Chang, EB
Handley, KM
AF Meyer, Folker
Trimble, William L.
Chang, Eugene B.
Handley, Kim M.
TI Functional predictions from inference and observation in sequence-based
inflammatory bowel disease research
SO GENOME BIOLOGY
LA English
DT Editorial Material
AB Meta-omics approaches such as metagenomics, metatranscriptomics and metaproteogenomics have the potential to improve our understanding of how the human microbiome affects digestive health and disease.
C1 [Meyer, Folker; Trimble, William L.; Handley, Kim M.] Argonne Natl Lab, Inst Genom & Syst Biol, Argonne, IL 60439 USA.
[Chang, Eugene B.] Univ Chicago Med, Chicago, IL 60637 USA.
[Handley, Kim M.] Univ Chicago, Searle Chem Lab, Computat Inst, Chicago, IL 60637 USA.
RP Meyer, F (reprint author), Argonne Natl Lab, Inst Genom & Syst Biol, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM folker@anl.gov
OI Meyer, Folker/0000-0003-1112-2284; Handley, Kim/0000-0003-0531-3009
NR 10
TC 6
Z9 6
U1 0
U2 11
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1465-6906
J9 GENOME BIOL
JI Genome Biol.
PY 2012
VL 13
IS 9
AR 169
DI 10.1186/gb-2012-13-9-169
PG 3
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 065XF
UT WOS:000313182600011
PM 23013527
ER
PT J
AU Zhaxybayeva, O
Swithers, KS
Foght, J
Green, AG
Bruce, D
Detter, C
Han, SS
Teshima, H
Han, J
Woyke, T
Pitluck, S
Nolan, M
Ivanova, N
Pati, A
Land, ML
Dlutek, M
Doolittle, WF
Noll, K
Nesbo, CL
AF Zhaxybayeva, Olga
Swithers, Kristen S.
Foght, Julia
Green, Anna G.
Bruce, David
Detter, Chris
Han, Shunsheng
Teshima, Hazuki
Han, James
Woyke, Tanja
Pitluck, Sam
Nolan, Matt
Ivanova, Natalia
Pati, Amrita
Land, Miriam L.
Dlutek, Marlena
Doolittle, W. Ford
Noll, KennethM.
Nesbo, Camilla L.
TI Genome Sequence of the Mesophilic Thermotogales Bacterium Mesotoga prima
MesG1.Ag.4.2 Reveals the Largest Thermotogales Genome To Date
SO GENOME BIOLOGY AND EVOLUTION
LA English
DT Article
DE lateral gene transfer; thermotogales; mesophilic; temperature adaptation
ID 16S RIBOSOMAL-RNA; ORDER THERMOTOGALES; GLOBAL-NETWORK; GENE-TRANSFER;
CLASSIFICATION; ENVIRONMENTS; PHYLOGENIES; DIVERSITY; EVOLUTION;
DATABASE
AB Here we describe the genome of Mesotoga prima MesG1.Ag4.2, the first genome of a mesophilic Thermotogales bacterium. Mesotoga prima was isolated from a polychlorinated biphenyl (PCB)-dechlorinating enrichment culture from Baltimore Harbor sediments. Its 2.97 Mb genome is considerably larger than any previously sequenced Thermotogales genomes, which range between 1.86 and 2.30Mb. This larger size is due to both higher numbers of protein-coding genes and larger intergenic regions. In particular, the M. prima genome contains more genes for proteins involved in regulatory functions, for instance those involved in regulation of transcription. Together with its closest relative, Kosmotoga olearia, it also encodes different types of proteins involved in environmental and cell-cell interactions as compared with other Thermotogales bacteria. Amino acid composition analysis of M. prima proteins implies that this lineage has inhabited low-temperature environments for a long time. A large fraction of the M. prima genome has been acquired by lateral gene transfer (LGT): a DarkHorse analysis suggests that 766 (32%) of predicted protein-coding genes have been involved in LGT after Mesotoga diverged from the other Thermotogales lineages. A notable example of a lineage-specific LGT event is a reductive dehalogenase gene-a key enzyme in dehalorespiration, indicating M. prima may have a more active role in PCB dechlorination than was previously assumed.
C1 [Zhaxybayeva, Olga] W Virginia Univ, Dept Biol, Morgantown, WV 26506 USA.
[Zhaxybayeva, Olga] Dartmouth Coll, Dept Biol Sci, Hanover, NH 03755 USA.
[Swithers, Kristen S.; Green, Anna G.; Noll, KennethM.] Univ Connecticut, Dept Mol & Cell Biol, Storrs, CT 06269 USA.
[Foght, Julia; Nesbo, Camilla L.] Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada.
[Bruce, David; Detter, Chris; Han, Shunsheng; Teshima, Hazuki] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA.
[Han, James; Woyke, Tanja; Pitluck, Sam; Nolan, Matt; Ivanova, Natalia; Pati, Amrita] DOE Joint Genome Inst, Walnut Creek, CA USA.
[Land, Miriam L.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Dlutek, Marlena; Doolittle, W. Ford] Dalhousie Univ, Dept Biochem & Mol Biol, Halifax, NS, Canada.
[Nesbo, Camilla L.] Univ Oslo, Dept Biol, CEES, Oslo, Norway.
RP Nesbo, CL (reprint author), Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada.
EM nesbo@ualberta.ca
RI Land, Miriam/A-6200-2011;
OI Land, Miriam/0000-0001-7102-0031; Foght, Julia/0000-0002-8614-3875
FU West Virginia University start-up funds; Norwegian Research Council
[180444/V40]; National Science Foundation [DEB 0830024]; NASA Exobiology
Program [NNX08AQ10G]; U.S. Department of Energy Joint Genome Institute
from the U.S. Department of Energy Office of Science
[DE-AC02-05CH11231]; Office of Science of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX We thank Dr Kira Makarova for help with CRISPR classification, and
Lauren Bradford for technical assistance. This work is supported by West
Virginia University start-up funds to O.Z., by a Norwegian Research
Council award (project no. 180444/V40) to C.L.N., and by National
Science Foundation (DEB 0830024) and NASA Exobiology Program
(NNX08AQ10G) grants to K.M.N. Mesotoga prima genome sequencing and
annotation were conducted by the U.S. Department of Energy Joint Genome
Institute, under contract No. DE-AC02-05CH11231 from the U.S. Department
of Energy Office of Science. The work conducted by the U.S. Department
of Energy Joint Genome Institute is supported by the Office of Science
of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.
NR 40
TC 6
Z9 6
U1 1
U2 15
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1759-6653
J9 GENOME BIOL EVOL
JI Genome Biol. Evol.
PY 2012
VL 4
IS 8
BP 812
EP 820
DI 10.1093/gbe/evs059
PG 9
WC Evolutionary Biology; Genetics & Heredity
SC Evolutionary Biology; Genetics & Heredity
GA 066HO
UT WOS:000313211700002
PM 22798451
ER
PT J
AU Crow, KD
Smith, CD
Cheng, JF
Wagner, GP
Amemiya, CT
AF Crow, Karen D.
Smith, Christopher D.
Cheng, Jan-Fang
Wagner, Guenter P.
Amemiya, Chris T.
TI An Independent Genome Duplication Inferred from Hox Paralogs in the
American Paddlefish-A Representative Basal Ray-Finned Fish and Important
Comparative Reference
SO GENOME BIOLOGY AND EVOLUTION
LA English
DT Article
DE Polyodon spathula; whole-genome duplication; WGD; rate asymmetry;
paralog retention; fin-limb transition
ID RECIPROCAL GENE LOSS; POLYODON-SPATHULA; MOLECULAR EVOLUTION; TELEOST
FISHES; EXPRESSION PATTERNS; STURGEON ACIPENSER; CHROMOSOME-NUMBER;
DIVERGENCE TIMES; ABSOLUTE RATES; DNA-SEQUENCES
AB Vertebrates have experienced two rounds of whole-genome duplication (WGD) in the stem lineages of deep nodes within the group and a subsequent duplication event in the stem lineage of the teleosts-a highly diverse group of ray-finned fishes. Here, we present the first full Hoxgene sequences for any member of the Acipenseriformes, the American paddlefish, and confirm that an independent WGD occurred in the paddlefish lineage, approximately 42 Ma based on sequences spanning the entire HoxA cluster and eight genes on the HoxD gene cluster. These clusters comprise different HOX loci and maintain conserved synteny relative to bichir, zebrafish, stickleback, and pufferfish, as well as human, mouse, and chick. We also provide a gene genealogy for the duplicated fzd8 gene in paddlefish and present evidence for the first Hox14 gene in any ray-finned fish. Taken together, these data demonstrate that the American paddlefish has an independently duplicated genome. Substitution patterns of the "alpha" paralogs on both the HoxA and HoxD gene clusters suggest transcriptional inactivation consistent with functional diploidization. Further, there are similarities in the pattern of sequence divergence among duplicated Hox genes in paddlefish and teleost lineages, even though they occurred independently approximately 200 Myr apart. We highlight implications on comparative analyses in the study of the "fin-limb transition" as well as gene and genome duplication in bony fishes, which includes all ray-finned fishes as well as the lobe-finned fishes and tetrapod vertebrates.
C1 [Crow, Karen D.; Smith, Christopher D.] San Francisco State Univ, Dept Biol, San Francisco, CA 94132 USA.
[Cheng, Jan-Fang; Wagner, Guenter P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Genom Div, Berkeley, CA 94720 USA.
Yale Univ, Dept Ecol & Evolutionary Biol, New Haven, CT 06520 USA.
[Amemiya, Chris T.] Benaroya Res Inst Virginia Mason, Mol Genet Program, Seattle, WA USA.
[Amemiya, Chris T.] Univ Washington, Dept Biol, Seattle, WA 98195 USA.
RP Crow, KD (reprint author), San Francisco State Univ, Dept Biol, San Francisco, CA 94132 USA.
EM crow@sfsu.edu
OI Wagner, Gunter/0000-0002-3097-002X
FU National Science Foundation [IOS-1022509, IOS-0321470, IOS-0321461,
MCB-0719558]; National Institutes of Health [HL66728, RR14085]
FX The authors thank John Postlethwait for procuring the Polyodon sample
that was used for the BAC library, Alicia Hill, Tsutomu Miyake, Andy
Stuart, and Deb Tinnemore for help in construction and screening of the
BAC library, Yi Peng for help with DNA sequencing, and Kent Susick for
help obtaining partial sequences of the paddlefish Fzd8 paralogs. This
work was supported by National Science Foundation grants IOS-1022509 (to
K.D.C.), IOS-0321470 (to G.P.W.), and IOS-0321461 and MCB-0719558 (to
C.T.A.), and National Institutes of Health grants HL66728 (to E. Rubin
and J.-F.C.) and RR14085 (to C.T.A.). HoxA cluster genes for the gar
(Loc) were obtained from Angel Amores.
NR 106
TC 19
Z9 19
U1 1
U2 35
PU OXFORD UNIV PRESS
PI OXFORD
PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
SN 1759-6653
J9 GENOME BIOL EVOL
JI Genome Biol. Evol.
PY 2012
VL 4
IS 9
BP 937
EP 953
DI 10.1093/gbe/evs067
PG 17
WC Evolutionary Biology; Genetics & Heredity
SC Evolutionary Biology; Genetics & Heredity
GA 066IA
UT WOS:000313212900005
PM 22851613
ER
PT S
AU Arnold, K
Ade, PAR
Anthony, AE
Barron, D
Boettger, D
Borrill, J
Chapman, S
Chinone, Y
Dobbs, MA
Errard, J
Fabbian, G
Flanigan, D
Fuller, G
Ghribi, A
Grainger, W
Halverson, N
Hasegawa, M
Hattori, K
Hazumi, M
Holzapfel, WL
Howard, J
Hyland, P
Jaffe, A
Keating, B
Kermish, Z
Kisner, T
Le Jeune, M
Lee, AT
Linder, E
Lungu, M
Matsuda, F
Matsumura, T
Miller, NJ
Meng, X
Morii, H
Moyerman, S
Myers, MJ
Nishino, H
Paar, H
Quealy, E
Reichardt, C
Richards, PL
Ross, C
Shimizu, A
Shimmin, C
Shimon, M
Sholl, M
Siritanasak, P
Spieler, H
Stebor, N
Steinbach, B
Stompor, R
Suzuki, A
Tomaru, T
Tucker, C
Zahn, O
AF Arnold, K.
Ade, P. A. R.
Anthony, A. E.
Barron, D.
Boettger, D.
Borrill, J.
Chapman, S.
Chinone, Y.
Dobbs, M. A.
Errard, J.
Fabbian, G.
Flanigan, D.
Fuller, G.
Ghribi, A.
Grainger, W.
Halverson, N.
Hasegawa, M.
Hattori, K.
Hazumi, M.
Holzapfel, W. L.
Howard, J.
Hyland, P.
Jaffe, A.
Keating, B.
Kermish, Z.
Kisner, T.
Le Jeune, M.
Lee, A. T.
Linder, E.
Lungu, M.
Matsuda, F.
Matsumura, T.
Miller, N. J.
Meng, X.
Morii, H.
Moyerman, S.
Myers, M. J.
Nishino, H.
Paar, H.
Quealy, E.
Reichardt, C.
Richards, P. L.
Ross, C.
Shimizu, A.
Shimmin, C.
Shimon, M.
Sholl, M.
Siritanasak, P.
Spieler, H.
Stebor, N.
Steinbach, B.
Stompor, R.
Suzuki, A.
Tomaru, T.
Tucker, C.
Zahn, O.
BE Holland, WS
Zmuidzinas, J
TI The bolometric focal plane array of the POLARBEAR CMB experiment
SO MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND
INSTRUMENTATION FOR ASTRONOMY VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and
Instrumentation for Astronomy VI
CY JUL 03-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE CMB; CMB polarization; bolometer; antenna; millimeter-wave
ID MILLIMETER-WAVE; SLOT ANTENNA; NIOBIUM
AB The POLARBEAR Cosmic Microwave Background (CMB) polarization experiment is currently observing from the Atacama Desert in Northern Chile. It will characterize the expected B-mode polarization due to gravitational lensing of the CMB, and search for the possible B-mode signature of inflationary gravitational waves. Its 250 mK focal plane detector array consists of 1,274 polarization-sensitive antenna-coupled bolometers, each with an associated lithographed band-defining filter. Each detector's planar antenna structure is coupled to the telescope's optical system through a contacting dielectric lenslet, an architecture unique in current CMB experiments. We present the initial characterization of this focal plane.
C1 [Arnold, K.; Flanigan, D.; Ghribi, A.; Holzapfel, W. L.; Howard, J.; Kermish, Z.; Lee, A. T.; Lungu, M.; Meng, X.; Myers, M. J.; Nishino, H.; Quealy, E.; Reichardt, C.; Richards, P. L.; Shimmin, C.; Steinbach, B.; Suzuki, A.; Zahn, O.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Ade, P. A. R.; Tucker, C.] Cardiff Univ, Sch Phys & Astron, Cardiff, Wales.
[Anthony, A. E.; Halverson, N.] Univ Colorado, Dept Astrophys & Planetary Sci, Colorado Springs, CO USA.
[Barron, D.; Boettger, D.; Fuller, G.; Matsuda, F.; Miller, N. J.; Moyerman, S.; Shimon, M.; Siritanasak, P.; Stebor, N.] Univ Calif, Ctr Space Sci & Astrophys, San Diego, CA USA.
[Borrill, J.; Kisner, T.] Computat Cosmol Ctr, Lawrence Berkeley Natl Lab, Lawrence, KS USA.
[Borrill, J.] Univ Calif, Space Sci Lab, Berkeley, CA USA.
[Chapman, S.; Ross, C.] Dalhousie Univ, Halifax, NS, Canada.
[Dobbs, M. A.] McGill Univ, Dept Phys, Montreal, PQ, Canada.
[Hyland, P.] Austin Coll, Dept Phys, Austin, TX USA.
[Errard, J.; Fabbian, G.; Le Jeune, M.; Stompor, R.] Univ Paris, APC, Lab Astroparticule & Cosmol, Paris, France.
[Chinone, Y.; Hasegawa, M.; Hattori, K.; Hazumi, M.; Matsumura, T.; Morii, H.; Shimizu, A.; Tomaru, T.] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki, Japan.
Imperial Coll, Dept Phys, London, England.
[Jaffe, A.; Lee, A. T.; Sholl, M.; Spieler, H.; Zahn, O.] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA.
[Linder, E.] STFC, Rutherford Appleton Lab, Oxford, England.
RP Arnold, K (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM karnold@berkeley.edu
RI Holzapfel, William/I-4836-2015;
OI Fabbian, Giulio/0000-0002-3255-4695; Reichardt,
Christian/0000-0003-2226-9169; Tucker, Carole/0000-0002-1851-3918;
Chinone, Yuji/0000-0002-3266-857X
FU National Science Foundation [AST-0618398]; NASA [NNG06GJ08G]; MEXT
KAKENHI [21111002]; Natural Sciences and Engineering Research Council;
Canadian Institute for Advanced Research; Alfred P. Sloan Research
Fellowship; Canada Research Chairs program
FX The POLARBEAR project is funded by the National Science Foundation under
grant AST-0618398. Antennacoupled bolometer development at Berkeley is
also funded by NASA under grant NNG06GJ08G. The KEK authors were
supported by MEXT KAKENHI Grant Number 21111002. The McGill authors
acknowledge funding from the Natural Sciences and Engineering Research
Council and Canadian Institute for Advanced Research. MD acknowledges
support from an Alfred P. Sloan Research Fellowship and Canada Research
Chairs program. All silicon wafer-based technology is fabricated at the
UC Berkeley Nanolab.
NR 23
TC 4
Z9 4
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9153-4
J9 PROC SPIE
PY 2012
VL 8452
AR 84521D
DI 10.1117/12.927057
PG 12
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDD98
UT WOS:000312884000040
ER
PT S
AU Kermish, ZD
Ade, P
Anthony, A
Arnold, K
Barron, D
Boettger, D
Borrill, J
Chapman, S
Chinone, Y
Dobbs, MA
Errard, J
Fabbian, G
Flanigan, D
Fuller, G
Ghribi, A
Grainger, W
Halverson, N
Hasegawa, M
Hattori, K
Hazumi, M
Holzapfel, WL
Howard, J
Hyland, P
Jaffe, A
Keating, B
Kisner, T
Lee, AT
Le Jeune, M
Linder, E
Lungu, M
Matsuda, F
Matsumura, T
Meng, XF
Miller, NJ
Morii, H
Moyerman, S
Myers, MJ
Nishino, H
Paar, H
Quealy, E
Reichardt, CL
Richards, PL
Ross, C
Shimizu, A
Shimon, M
Shimmin, C
Sholl, M
Siritanasak, P
Spieler, H
Stebor, N
Steinbach, B
Stompor, R
Suzuki, A
Tomaru, T
Tucker, C
Zahn, O
AF Kermish, Zigmund D.
Ade, Peter
Anthony, Aubra
Arnold, Kam
Barron, Darcy
Boettger, David
Borrill, Julian
Chapman, Scott
Chinone, Yuji
Dobbs, Matt A.
Errard, Josquin
Fabbian, Giulio
Flanigan, Daniel
Fuller, George
Ghribi, Adnan
Grainger, Will
Halverson, Nils
Hasegawa, Masaya
Hattori, Kaori
Hazumi, Masashi
Holzapfel, William L.
Howard, Jacob
Hyland, Peter
Jaffe, Andrew
Keating, Brian
Kisner, Theodore
Lee, Adrian T.
Le Jeune, Maude
Linder, Eric
Lungu, Marius
Matsuda, Frederick
Matsumura, Tomotake
Meng, Xiaofan
Miller, Nathan J.
Morii, Hideki
Moyerman, Stephanie
Myers, Mike J.
Nishino, Haruki
Paar, Hans
Quealy, Erin
Reichardt, Christian L.
Richards, Paul. L.
Ross, Colin
Shimizu, Akie
Shimon, Meir
Shimmin, Chase
Sholl, Mike
Siritanasak, Praween
Spieler, Helmuth
Stebor, Nathan
Steinbach, Bryan
Stompor, Radek
Suzuki, Aritoki
Tomaru, Takayuki
Tucker, Carole
Zahn, Oliver
BE Holland, WS
Zmuidzinas, J
TI The POLARBEAR Experiment
SO MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND
INSTRUMENTATION FOR ASTRONOMY VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and
Instrumentation for Astronomy VI
CY JUL 03-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Cosmic Microwave Background; Inflation; Polarization; Bolometer
ID MICROWAVE BACKGROUND POLARIZATION; INFLATIONARY UNIVERSE; FLATNESS;
HORIZON
AB We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment's 3.5' beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves.
POLARBEAR was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile.
C1 [Kermish, Zigmund D.; Arnold, Kam; Flanigan, Daniel; Ghribi, Adnan; Holzapfel, William L.; Howard, Jacob; Lee, Adrian T.; Lungu, Marius; Meng, Xiaofan; Myers, Mike J.; Nishino, Haruki; Quealy, Erin; Reichardt, Christian L.; Richards, Paul. L.; Shimmin, Chase; Steinbach, Bryan; Suzuki, Aritoki] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Ade, Peter; Tucker, Carole] Cardiff Univ, Sch Phys & Astron, Cardiff, Wales.
[Anthony, Aubra] Univ Colorado, Dept Astrophys & Planetary Sci, Colorado Springs, CO USA.
[Barron, Darcy; Boettger, David; Keating, Brian; Matsuda, Frederick; Miller, Nathan J.; Moyerman, Stephanie; Paar, Hans; Shimon, Meir; Siritanasak, Praween; Stebor, Nathan] Univ Calif, Dept Phys, San Diego, CA USA.
[Borrill, Julian; Halverson, Nils; Kisner, Theodore] Computat Cosmol Ctr, Lawrence Berkeley Natl Lab, Lawrence, KS USA.
[Borrill, Julian] Univ Calif, Space Sci Lab, Berkeley, CA USA.
[Chinone, Yuji; Hasegawa, Masaya; Hattori, Kaori; Hazumi, Masashi; Matsumura, Tomotake; Morii, Hideki; Shimizu, Akie; Tomaru, Takayuki] High Energy Accelerator Res Org KEK, Tokyo, Japan.
[Dobbs, Matt A.] McGill Univ, Dept Phys, Montreal, PQ, Canada.
[Errard, Josquin; Fabbian, Giulio; Le Jeune, Maude; Stompor, Radek] Univ Paris 07, APC, Lab Astroparticule & Cosmol, Paris, France.
[Jaffe, Andrew] Imperial Coll, Dept Phys, London, England.
[Linder, Eric; Sholl, Mike; Spieler, Helmuth; Zahn, Oliver] Lawrence Berkeley Natl Lab, Div Phys, Lawrence, KS USA.
[Zahn, Oliver] Univ Calif, Berkeley Ctr Cosmol Phys BCCP, Berkeley, CA USA.
[Hyland, Peter] Austin Coll, Dept Phys, Austin, TX USA.
[Chapman, Scott; Ross, Colin] Dalhousie Univ, Dept Phys, Halifax, NS, Canada.
[Grainger, Will] STFC, Rutherford Appleton Lab, Oxford, England.
RP Kermish, ZD (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
EM zkermish@princeton.edu
RI Holzapfel, William/I-4836-2015;
OI Fabbian, Giulio/0000-0002-3255-4695; Reichardt,
Christian/0000-0003-2226-9169; Tucker, Carole/0000-0002-1851-3918;
Chinone, Yuji/0000-0002-3266-857X
FU National Science Foundation [AST-0618398]; NASA [NNG06GJ08G]; Alfred P.
Sloan Research Fellowship; Canada Research Chair program; MEXT KAKENHI
[21111002]
FX The POLARBEAR project is funded by the National Science Foundation under
grant AST-0618398. Antennacoupled bolometer development at Berkeley is
funded by NASA under grant NNG06GJ08G. The McGill authors acknowledge
funding from the Natural Sciences and Engineering Research Council and
Canadian Institute for Advanced Research. MD acknowledges support from
an Alfred P. Sloan Research Fellowship and Canada Research Chair
program. The KEK authors were supported by MEXT KAKENHI Grant Number
21111002. All silicon wafer- based technology is fabricated at the UC
Berkeley Microlab.
NR 31
TC 16
Z9 16
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9153-4
J9 PROC SPIE
PY 2012
VL 8452
AR 84521C
DI 10.1117/12.926354
PG 15
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDD98
UT WOS:000312884000039
ER
PT S
AU Ren, Y
Hayton, DJ
Hovenier, JN
Cui, M
Gao, JR
Klapwijk, TM
Shi, SC
Kao, TY
Hu, Q
Reno, JL
AF Ren, Y.
Hayton, D. J.
Hovenier, J. N.
Cui, M.
Gao, J. R.
Klapwijk, T. M.
Shi, S. C.
Kao, T-Y.
Hu, Q.
Reno, J. L.
BE Holland, WS
Zmuidzinas, J
TI Stabilized HEB-QCL heterodyne spectrometer at super-terahertz
SO MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND
INSTRUMENTATION FOR ASTRONOMY VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Millimeter, Submillimeter, and Far-Infrared Detectors and
Instrumentation for Astronomy VI
CY JUL 03-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE terahertz heterodyne spectrometer; quantum cascade laser; freqeuncy
locking; stabilization
ID QUANTUM-CASCADE LASERS; LINEWIDTH
AB We report a new experiment on a high-resolution heterodyne spectrometer using a 3.5 THz quantum cascade laser (QCL) as local oscillator (LO) and a superconducting hot electron bolometer (HEB) as mixer by stabilizing both frequency and amplitude of the QCL. The frequency locking of the QCL is demonstrated by using a methanol molecular absorption line, a proportional-integral-derivative (PID) controller, and a direct power detector. We show that the LO locked linewidth can be as narrow as 35 KHz. The LO power to the HEB is also stabilized by means of swing-arm actuator placed in the beam path in combination of a second PID controller.
C1 [Ren, Y.; Hovenier, J. N.; Gao, J. R.; Klapwijk, T. M.] Delft Univ Technol, Kavli Inst NanoSci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
[Ren, Y.; Shi, S. C.] Chinese Acad Sci, PMO, Nanjing 210008, Jiangsu, Peoples R China.
[Ren, Y.] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China.
[Hayton, D. J.; Cui, M.; Gao, J. R.] SRON, Inst Space Res, NL-3584 CA Utrecht, Netherlands.
[Kao, T-Y.; Hu, Q.] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA.
[Reno, J. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Ren, Y (reprint author), Delft Univ Technol, Kavli Inst NanoSci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
EM y.ren@tudelft.nl; j.r.gao@tudelft.nl
NR 12
TC 1
Z9 1
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9153-4
J9 PROC SPIE
PY 2012
VL 8452
AR 845210
DI 10.1117/12.925651
PG 6
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDD98
UT WOS:000312884000030
ER
PT S
AU Osgood, RM
Stenhouse, PD
Quigley, CE
Hoey, ML
Carlson, JB
Lopez, K
Kooi, S
Armstrong, L
Haines, C
Kapoor, D
Cotlet, M
AF Osgood, R. M., III
Stenhouse, P. D.
Quigley, C. E.
Hoey, M. L.
Carlson, J. B.
Lopez, K.
Kooi, S.
Armstrong, L.
Haines, C.
Kapoor, D.
Cotlet, M.
BE Stockman, MI
TI Large-area Ag nanoparticle arrays for plasmonically enhanced Raman
scattering
SO PLASMONICS: METALLIC NANOSTRUCTURES AND THEIR OPTICAL PROPERTIES X
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Plasmonics - Metallic Nanostructures and Their Optical
Properties X
CY AUG 12-16, 2012
CL San Diego, CA
SP SPIE
DE Plasmonic resonances; nanoparticles; Raman spectroscopy; Raman
scattering; Raman cross-section; field enhancement; chemical sensing;
explosives sensing; NIR/visible spectrum; optical properties
ID SILVER NANOPARTICLES; 2-DIMENSIONAL ARRAYS
AB Conducting nanoparticles with plasmon resonances create local, nanoscopic field enhancements that boost an analyte molecule's surface-averaged Raman scattering cross-section orders of magnitude above the bulk Raman cross-section by an amount known as the enhancement factor (EF). Demonstrations of single-molecule sensitivity with EF similar to 10(13) have been reported from small "hot spots" (e. g., regions of enhanced electromagnetic near fields) on specialized substrates, but realistic chemical sensing requires high average EF over large substrates for practical sampling. 1 By using simple wet chemical methods, NSRDEC scientists have fabricated large-area arrays of novel, highly conducting, anisotropic Ag and Al nanoparticles. The nanoparticles adhere to an ultrathin layer of poly-4(vinyl pyridine), and are anchored by sub-micron coating of poly-methyl methacrylate on glass and SiO2-coated Si substrates. The average interparticle spacing is determined by the dilution of the nanoparticle-water suspension. We present surface-enhanced Raman spectroscopy (SERS), spectrophotometry, and microscopy data from these nanoparticle arrays, model this data and the nanoscopic field enhancement, and determine the SERS EF. We compare the observed absorption resonances and SERS EF with those predicted by finite difference time domain modeling of the nanoscale fields and optical properties, and find good agreement between measured and calculated reflectivity, achieving EF similar to 10(6) for benzenethiol adsorbed onto a monolayer array of 120 nm Ag nanoparticles over an area of similar to 0.5 cm(2). We discuss a way forward to increase SERS EF to 10(7) with large-area samples assembled using chemical methods, by using spiky Ag "nano-urchins" with very large predicted field enhancements.
C1 [Osgood, R. M., III; Stenhouse, P. D.; Quigley, C. E.; Hoey, M. L.; Carlson, J. B.; Lopez, K.] USA, Natick Soldier Res Dev & Engn Ctr, Natick, MA 01760 USA.
[Kooi, S.] MIT, Inst Soldier Nanotechnol, Cambridge, MA 02139 USA.
[Armstrong, L.; Haines, C.; Kapoor, D.] US Army, Armament Res Dev & Engn Ctr, Picatinny Arsenal, NJ 07885 USA.
[Cotlet, M.] Ctr Funct Nanomaterials, Brookhaven Natl Lab, Upton, NY 11949 USA.
RP Osgood, RM (reprint author), USA, Natick Soldier Res Dev & Engn Ctr, Natick, MA 01760 USA.
NR 10
TC 1
Z9 1
U1 1
U2 29
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9174-9
J9 PROC SPIE
PY 2012
VL 8457
AR 845738
DI 10.1117/12.930006
PG 7
WC Nanoscience & Nanotechnology; Optics; Physics, Fluids & Plasmas
SC Science & Technology - Other Topics; Optics; Physics
GA BDH14
UT WOS:000313216000039
ER
PT J
AU Burns, JD
Borkowski, M
Clearfield, A
Reed, DT
AF Burns, J. D.
Borkowski, M.
Clearfield, A.
Reed, D. T.
TI Separation of oxidized americium from lanthanides by use of pillared
metal(IV) phosphate-phosphonate hybrid materials
SO RADIOCHIMICA ACTA
LA English
DT Article
DE Ion exchange; Americium oxidation; Lanthanides and actinides; Extraction
of actinides; Nuclear waste; Separations
ID OXIDATION-STATES; ACTINIDE IONS; EXTRACTION; CHEMISTRY; FLUORIDE;
BEHAVIOR; AM(V)
AB Closing the nuclear fuel cycle in the US poses many challenges, one of which is found in the waste streams, which contain both trivalent lanthanides and actinides. The separation of americium from the raffinate will dramatically reduce the long-term radiotoxicity of the waste. The sorption of americium in both the tri- and pentavalent oxidation states was observed for four M(IV) phosphate-phosphonate ion exchange materials in nitric acid at pH 2. High selectivity was observed for reduced Am(III) with K-d values ca. 6 x 10(5) mL/g, while the K-d values for Am(V) were much lower. A new method of synthesizing and stabilizing AmO2+ to yield a lifetime of at least 24 h in acidic media using a combination of sodium persulfate and calcium hypochlorite will be described.
C1 [Burns, J. D.; Clearfield, A.] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA.
[Borkowski, M.; Reed, D. T.] Los Alamos Natl Lab, Div Earth & Environm Sci, Carlsbad, NM 88220 USA.
RP Burns, JD (reprint author), Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA.
EM jbunrs@chem.tamu.edu
RI Clearfield, Abraham/D-4184-2015; Burns, Jonathan/O-2028-2015
OI Clearfield, Abraham/0000-0001-8318-8122; Burns,
Jonathan/0000-0003-0301-9607
FU US Department of Energy, Office of Basic Energy Sciences
[DE-FG02-03ER15420]; Savannah River National Laboratories [AC-70059-0];
direction of the DOE/EM Carlsbad field office (CBFO)
FX This work was supported by the US Department of Energy, Office of Basic
Energy Sciences, through Grant DE-FG02-03ER15420 and Savannah River
National Laboratories through Grant AC-70059-0, for which grateful
acknowledgement is made. A special thanks to the entire LANL team at the
Carlsbad Environmental Monitoring and Research Center, who are supported
by the Waste Isolation Pilot Plant program under the direction of the
DOE/EM Carlsbad field office (CBFO), for allowing the actinide work to
be conducted in their facilities, as well as lending their expertise to
help better shape the experiments. We thank Michael Richmann who
conducted the ICP-MS analyses of the Am/Nd systems.
NR 30
TC 5
Z9 6
U1 0
U2 15
PU OLDENBOURG VERLAG
PI MUNICH
PA LEKTORAT MINT, POSTFACH 80 13 60, D-81613 MUNICH, GERMANY
SN 0033-8230
J9 RADIOCHIM ACTA
JI Radiochim. Acta
PY 2012
VL 100
IS 12
BP 901
EP 906
DI 10.1524/ract.2013.1990
PG 6
WC Chemistry, Inorganic & Nuclear; Nuclear Science & Technology
SC Chemistry; Nuclear Science & Technology
GA 068NG
UT WOS:000313372800005
ER
PT J
AU Werner-Zwanziger, U
Chapman, KW
Zwanziger, JW
AF Werner-Zwanziger, Ulrike
Chapman, Karena W.
Zwanziger, Josef W.
TI Multinuclear NMR Study of Zinc Dicyanide
SO ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH
IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
LA English
DT Article
DE Multinuclear NMR Spectroscopy; Negative Thermal Expansion Materials
ID NEGATIVE THERMAL-EXPANSION; SOLID-STATE; ZN(CN)(2); CYANIDE;
SPECTROSCOPY; COMPLEXES; TENSORS; DIAMOND
AB The isotropic negative expansion of Zn(CN)(2) has been linked to a temperature induced increase in off-axis tilting of the C-N bond direction and an increase in CN-bond length. However, the bond length could be determined only indirectly based on pair-distribution function analysis and was found to be surprisingly large. Here we study Zn(CN)(2) by nuclear magnetic resonance spectroscopy and first principles calculations. By using samples enriched in C-13 and N-15 the dipole coupling between carbon and nitrogen is determined, and from this an upper bound on the C-N bond length of 1.19 +/- 0.01 angstrom is derived. This quantity agrees with earlier determinations based on diffraction but is shorter than estimates based on pair distribution function analysis. The relation of this estimate to possible dynamics in the sample is discussed. Finally, Zn-67 NMR is used together with first principles calculations to assess disorder in the material.
C1 [Werner-Zwanziger, Ulrike; Zwanziger, Josef W.] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4R2, Canada.
[Werner-Zwanziger, Ulrike; Zwanziger, Josef W.] Dalhousie Univ, Inst Mat Res, Halifax, NS B3H 4R2, Canada.
[Chapman, Karena W.] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA.
RP Zwanziger, JW (reprint author), Dalhousie Univ, Dept Chem, Coburg Rd 6274, Halifax, NS B3H 4R2, Canada.
EM jzwanzig@dal.ca
OI Zwanziger, Josef/0000-0001-9999-7469
FU National Sciences and Engineering Research Council of Canada; U.S.
Department of Energy, Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX Funding was provided by the National Sciences and Engineering Research
Council of Canada. Work performed at Argonne was supported by the U.S.
Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357. We thank the National
Ultrahigh-field NMR Facility for Solids, Ottawa, Canada, for the
acquisition of the 67Zn data. We thank Professor Dr. Hans
Spiess and Dr. Gunther Brunklaus of the Max Planck Institute for Polymer
Research, Mainz, Germany, for access to NMR facilities and for
discussions.
NR 28
TC 5
Z9 5
U1 1
U2 22
PU OLDENBOURG VERLAG
PI MUNICH
PA LEKTORAT MINT, POSTFACH 80 13 60, D-81613 MUNICH, GERMANY
SN 0942-9352
J9 Z PHYS CHEM
JI Z. Phys. Chemie-Int. J. Res. Phys. Chem. Chem. Phys.
PY 2012
VL 226
IS 11-12
SI SI
BP 1205
EP 1218
DI 10.1524/zpch.2012.0285
PG 14
WC Chemistry, Physical
SC Chemistry
GA 067TE
UT WOS:000313317200009
ER
PT S
AU Jiang, XW
Deng, HX
Li, SS
Luo, JW
Wang, LW
AF Jiang, Xiang-Wei
Deng, Hui-Xiong
Li, Shu-Shen
Luo, Jun-Wei
Wang, Lin-Wang
BE Piprek, J
Lu, W
TI Quantum Mechanical Simulations of Nano-Structures and Nano-Devices
SO 2012 12TH INTERNATIONAL CONFERENCE ON NUMERICAL SIMULATION OF
OPTOELECTRONIC DEVICES (NUSOD)
SE International Conference on Numerical Simulation of Optoelectronic
Devices
LA English
DT Proceedings Paper
CT 12th International Conference on Numerical Simulation of Optoelectronic
Devices (NUSOD)
CY AUG 28-31, 2012
CL Shanghai, PEOPLES R CHINA
SP IEEE Photon Soc, Numer Simulat Optoelect Devices (NUSOD) Inst, Natl Nat Sci Fdn China (NSFC), Shanghai Inst Tech Phys (SITP), Shanghai Inst Microsyst & Informat Technol (SIMIT), Chinese Acad Sci (CAS)
AB We have investigated the quantum mechanical effects in quantum dots and nano size silicon MOSFETs using empirical psedupotential Hamiltonian model and linear combination of bulk band (LCBB) method. Unlike the traditional effective mass approximation and kp method, our approach uses a full zone expansion to represent the electronic state. This method provides a very fast yet accurate way to simulate million atom nano structures and nano devices even on a single processor personal computer.
C1 [Jiang, Xiang-Wei; Deng, Hui-Xiong; Li, Shu-Shen] Chinese Acad Sci, Inst Semicond, Beijing 100864, Peoples R China.
[Luo, Jun-Wei] Natl Renewable Energy Lab, Golden, CO USA.
[Wang, Lin-Wang] Lawrence Berkeley Natl Lab, Lawrence, KS USA.
RP Jiang, XW (reprint author), Chinese Acad Sci, Inst Semicond, Beijing 100864, Peoples R China.
FU National Basic Research Program of China ( 973 Program) [G2009CB929300];
National Natural Science Foundation of China [61106091, 60821061,
60776061]
FX This work was supported by the National Basic Research Program of China
( 973 Program) Grant No. G2009CB929300 and the National Natural Science
Foundation of China under Grand Nos. 61106091, 60821061 and 60776061.
NR 10
TC 0
Z9 0
U1 1
U2 3
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
SN 2158-3234
BN 978-1-4673-1604-0; 978-1-4673-1602-6
J9 INT C NUMER SIMUL
PY 2012
BP 101
EP +
PG 2
WC Engineering, Electrical & Electronic; Mathematics, Applied; Optics
SC Engineering; Mathematics; Optics
GA BDC76
UT WOS:000312670900050
ER
PT S
AU Narumanchi, S
Mihalic, M
Moreno, G
Bennion, K
AF Narumanchi, Sreekant
Mihalic, Mark
Moreno, Gilbert
Bennion, Kevin
GP IEEE
TI Design of Light-Weight, Single-Phase Liquid-Cooled Heat Exchanger for
Automotive Power Electronics
SO 2012 13TH IEEE INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL
PHENOMENA IN ELECTRONIC SYSTEMS (ITHERM)
SE InterSociety Conference on Thermal and Thermomechanical Phenomena in
Electronic Systems
LA English
DT Proceedings Paper
CT 13th IEEE InterSociety Conference on Thermal and Thermomechanical
Phenomena in Electronic Systems (ITherm)
CY MAY 30-JUN 01, 2012
CL San Diego, CA
SP IEEE, IEEE Components, Packaging and Mfg Technol Soc (CPMT)
DE jet impingement; WEG; automotive inverter/power electronics;
microfinned/enhanced surfaces; CFD modeling; reliability
ID JET IMPINGEMENT; ROUGHNESS
AB Efficient thermal management is critical to increasing power density, improving reliability, and reducing the cost of automotive power electronics. In this paper, we present a heat exchanger design based on impinging jets (with 50%-50% mixture by volume of water-ethylene glycol as coolant) on the copper base plate with and without microfinned/enhanced surfaces, and a plastic fluid manifold. Finite-element analyses as well as computational fluid dynamics (CFD) modeling were utilized for the design. The performance of the jet-based heat exchanger is compared to the baseline channel-flow heat exchanger via CFD modeling. We also characterized the thermal performance of the channel-flow-based heat exchanger experimentally to validate the CFD predictions. CFD results indicate that the jet-based heat exchanger can provide up to 45% lower thermal resistance, 79% increase in power density, and 118% increase in specific power with respect to the baseline channel-flow heat exchanger. We also initiated experimental characterization of the reliability of jet impingement on a plain surface as well as on microfinned/enhanced surfaces. Results to date suggest that jet impingement does not degrade the thermal performance of the enhanced surfaces after six months of near-continuous impingement on the surface.
C1 [Narumanchi, Sreekant; Mihalic, Mark; Moreno, Gilbert; Bennion, Kevin] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Narumanchi, S (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM sreekant.narumanchi@nrel.gov
OI Narumanchi, Sreekant/0000-0001-5337-6069
NR 20
TC 1
Z9 1
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1936-3958
BN 978-1-4244-9532-0
J9 INTSOC CONF THERMAL
PY 2012
BP 693
EP 699
PG 7
WC Thermodynamics; Engineering, Electrical & Electronic
SC Thermodynamics; Engineering
GA BDD69
UT WOS:000312835500091
ER
PT S
AU He, X
Lustbader, JA
Arik, M
Sharma, R
AF He, Xin
Lustbader, Jason A.
Arik, Mehmet
Sharma, Rajdeep
GP IEEE
TI Characteristics of Low Reynolds Number Steady Air Jet Impingement Heat
Transfer Over Vertical Flat Surfaces
SO 2012 13TH IEEE INTERSOCIETY CONFERENCE ON THERMAL AND THERMOMECHANICAL
PHENOMENA IN ELECTRONIC SYSTEMS (ITHERM)
SE InterSociety Conference on Thermal and Thermomechanical Phenomena in
Electronic Systems
LA English
DT Proceedings Paper
CT 13th IEEE InterSociety Conference on Thermal and Thermomechanical
Phenomena in Electronic Systems (ITherm)
CY MAY 30-JUN 01, 2012
CL San Diego, CA
SP IEEE, IEEE Components, Packaging and Mfg Technol Soc (CPMT)
DE Steady jets; heat transfer; impingement cooling
ID SLOT JET; NOZZLE; PLATE
AB In this paper, heat transfer characteristics of single-slot steady-impinging air jets on a 25.4 rum x 25.4 mm vertical surface were experimentally investigated. The experiments were conducted with four different nozzles (length x width: 4 mm x 1 mm, 8 mm x 1 mm, 12 rum x 1 mm, and 15 rum x 1 mm). The parameters varied in the testing were Reynolds number (Re) (100 - 2,000) and dimensionless nozzle-to-plate spacing (H/D-h = 5, 10, 15, and 20). Correlations for average Nusselt numbers (Nu) were developed that accurately predict experimental data. The heat transfer coefficient over a vertical surface increases with increasing Re. For a small nozzle-toplate spacing (H/D-h = 5), the average Nu correlation is not only a function of Re but also a function of nozzle length. For large nozzle-to-plate spacing (H/D-h >= 10) and nozzle length larger than 8 mm, the heat transfer coefficient is insensitive to H/D-h and nozzle length. A subset of this data was then compared to synthetic jet data in a separate study.
C1 [He, Xin; Lustbader, Jason A.] Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
[Arik, Mehmet] Ozyegin Univ, Dept Mech Engn, Istanbul, Turkey.
[Sharma, Rajdeep] Exponent Inc, Menlo Pk, CA USA.
RP He, X (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM xin.he@nrel.gov
RI He, Xin/I-4240-2012
NR 18
TC 1
Z9 1
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1936-3958
BN 978-1-4244-9532-0
J9 INTSOC CONF THERMAL
PY 2012
BP 1364
EP 1371
PG 8
WC Thermodynamics; Engineering, Electrical & Electronic
SC Thermodynamics; Engineering
GA BDD69
UT WOS:000312835500174
ER
PT S
AU Malikopoulos, AA
Aguilar, JP
AF Malikopoulos, Andreas A.
Aguilar, Juan P.
GP IEEE
TI Optimization of Driving Styles for Fuel Economy Improvement
SO 2012 15TH INTERNATIONAL IEEE CONFERENCE ON INTELLIGENT TRANSPORTATION
SYSTEMS (ITSC)
SE IEEE International Conference on Intelligent Transportation Systems-ITSC
LA English
DT Proceedings Paper
CT 15th International IEEE Conference on Intelligent Transportation Systems
(ITSC)
CY SEP 16-19, 2012
CL Anchorage, AK
ID VEHICLE; CONSUMPTION; EMISSIONS
AB Modern vehicles have sophisticated electronic control units, particularly to control engine operation with respect to a balance between fuel economy, emissions, and power. These control units are designed for specific driving conditions and testing. However, each individual driving style is different and rarely meets those driving conditions. In the research reported here we investigate those driving style factors that have a major impact on fuel economy. An optimization framework is proposed with the aim of optimizing driving styles with respect to these driving factors. A set of polynomial metamodels are constructed to reflect the responses produced by changes of the driving factors. Then we compare the optimized driving styles to the original ones and evaluate the efficiency and effectiveness of the optimization formulation.
C1 [Malikopoulos, Andreas A.; Aguilar, Juan P.] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA.
RP Malikopoulos, AA (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA.
EM andreas@ornl.gov
NR 16
TC 11
Z9 11
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-0009
BN 978-1-4673-3063-3
J9 IEEE INT C INTELL TR
PY 2012
BP 194
EP 199
PG 6
WC Automation & Control Systems; Computer Science, Artificial Intelligence;
Engineering, Electrical & Electronic; Transportation Science &
Technology
SC Automation & Control Systems; Computer Science; Engineering;
Transportation
GA BDC45
UT WOS:000312599600033
ER
PT S
AU Ernst, JM
Krogmeier, JV
Bullock, DM
AF Ernst, Joseph M.
Krogmeier, James V.
Bullock, Darcy M.
GP IEEE
TI Kullback-Leibler Comparison Framework for the Evaluation of Travel Time
Distribution Estimates
SO 2012 15TH INTERNATIONAL IEEE CONFERENCE ON INTELLIGENT TRANSPORTATION
SYSTEMS (ITSC)
SE IEEE International Conference on Intelligent Transportation Systems-ITSC
LA English
DT Proceedings Paper
CT 15th International IEEE Conference on Intelligent Transportation Systems
(ITSC)
CY SEP 16-19, 2012
CL Anchorage, AK
AB In the 1970s a framework was developed by Oppenlander for evaluation of travel time estimation studies. This framework is still recommended today. This paper develops a new framework to improve upon the ideas set forth by Oppenlander. This new framework is based upon the Kullback-Leibler divergence. It allows for travel time studies to be evaluated in a more comprehensive way. Travel time estimation methods can now be evaluated on their ability to estimate travel time distributions instead of only the mean travel time. Also, this framework can be used on any travel time distribution whereas the Oppenlander framework was only properly suited for Gaussian distributions. The Kullback-Leibler divergence also allows for both ID matching and signature matching travel time estimation algorithms to be evaluated, while the Oppenlander framework was best suited for the ID matching algorithms.
In this paper the Kullback-Leibler comparison framework for travel time studies is developed. The framework is then used to provide a comparison of an example ID matching and an example signature matching algorithm to demonstrate how both can be evaluated in a single framework. Finally, conclusions are made about the usefulness of the Kullback-Leibler comparison framework.
C1 [Ernst, Joseph M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Krogmeier, James V.] Purdue Univ, Dept Elect & Comp Engn, W Lafayette, IN 47907 USA.
[Bullock, Darcy M.] Purdue Univ, Dept Civil Engn, W Lafayette, IN 47907 USA.
RP Ernst, JM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
EM ernstjm@ornl.gov; jvk@purdue.edu; darcy@purdue.edu
OI Bullock, Darcy/0000-0002-7365-1918
FU Motorola Foundation; National Academy of Sciences; National Science
Foundation CCLI Program [0837280]
FX This work was supported by the Motorola Foundation, the National Academy
of Sciences through the National Cooperative Highway Research Program,
and the National Science Foundation CCLI Program under Award 0837280.
The contents of this paper reflect the views of the authors, who are
responsible for the facts and accuracy of the data presented herein, and
do not necessarily reflect the official views or policies of the
sponsoring organizations.
NR 17
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2153-0009
BN 978-1-4673-3063-3
J9 IEEE INT C INTELL TR
PY 2012
BP 564
EP 569
PG 6
WC Automation & Control Systems; Computer Science, Artificial Intelligence;
Engineering, Electrical & Electronic; Transportation Science &
Technology
SC Automation & Control Systems; Computer Science; Engineering;
Transportation
GA BDC45
UT WOS:000312599600094
ER
PT S
AU Auciello, O
Sumant, A
Getty, S
Glavin, D
AF Auciello, Orlando
Sumant, Anirudha
Getty, Stephanie
Glavin, Daniel
GP IEEE
TI Ultrananocrystalline Diamond (UNCD) Films for Field Emission-Based
Science and Devices
SO 2012 25TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC)
SE International Vacuum Nanoelectronics Conference
LA English
DT Proceedings Paper
CT 25th International Vacuum Nanoelectronics Conference (IVNC)
CY JUL 09-13, 2012
CL Jeju Island, SOUTH KOREA
SP IEEE, Korea Univ, Inst Nanotechnol, Korea Univ, WCU Flexible Nanosyst Grp, Korea Univ, BK21 Informat Technol Div, Elect & Telecommun Res Inst (ETRI), Korean Informat Display Soc (KIDS), Korean Carbon Soc, Electron Devices Soc (EDS), AVS
C1 [Auciello, Orlando; Sumant, Anirudha] Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Getty, Stephanie; Glavin, Daniel] Goddard Space Flight Ctr, NASA, Washington, DC USA.
RP Auciello, O (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM auciello@anl.gov
RI Getty, Stephanie/D-7037-2012; Glavin, Daniel/D-6194-2012
OI Glavin, Daniel/0000-0001-7779-7765
NR 0
TC 0
Z9 0
U1 1
U2 3
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
SN 2164-2370
BN 978-1-4673-1983-6; 978-1-4673-1982-9
J9 INT VACUUM NANOELECT
PY 2012
BP 32
EP 32
PG 1
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BDD81
UT WOS:000312875600011
ER
PT S
AU Liu, GX
Shen, HY
Ward, L
AF Liu, Guoxin
Shen, Haiying
Ward, Lee
GP IEEE
TI An Efficient and Trustworthy P2P and Social Network Integrated File
Sharing System
SO 2012 IEEE 12TH INTERNATIONAL CONFERENCE ON PEER-TO-PEER COMPUTING (P2P)
SE IEEE International Conference on Peer-to-Peer Computing
LA English
DT Proceedings Paper
CT 12th IEEE International Conference on Peer-to-Peer Computing (P2P)
CY SEP 03-05, 2012
CL Tarragona, SPAIN
SP IEEE
AB Efficient and trustworthy file querying is important to the overall performance of peer-to-peer (P2P) file sharing systems. Emerging methods are beginning to address this challenge by exploiting online social networks (OSNs). However, current OSN-based methods simply cluster common-interest nodes for high efficiency or limit the interaction between social friends for high trustworthiness, which provides limited enhancement or contradicts the open and free service goal of P2P systems. Little research has been undertaken to fully and cooperatively leverage OSNs with integrated consideration of proximity and interest. In this work, we analyze a BitTorrent file sharing trace, which proves the necessity of proximity-and interest-aware clustering. Based on the trace study and OSN properties, we propose a SOcial Network integrated P2P file sharing system with enhanced Efficiency and Trustworthiness (SoNet) to fully and cooperatively leverage the common-interest, proximity-close and trust properties of OSN friends. SoNet uses a hierarchical distributed hash table (DHT) to cluster common-interest nodes, then further cluster proximity-close nodes into subcluster, and connects the nodes in a subcluster with social links. Thus, when queries travel along trustable social links, they also gain higher probability of being successfully resolved by proximity-close nodes, simultaneously enhancing efficiency and trustworthiness. The results of trace-driven experiments on the real-world PlanetLab testbed demonstrate the higher efficiency and trustworthiness of SoNet compared with other systems.
C1 [Liu, Guoxin; Shen, Haiying] Clemson Univ, Dept Elect & Comp Engn, Clemson, SC 29631 USA.
[Ward, Lee] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Liu, GX (reprint author), Clemson Univ, Dept Elect & Comp Engn, Clemson, SC 29631 USA.
EM guoxinl@clemson.edu; shenh@clemson.edu; lee@sandia.gov
FU U.S. NSF [OCI-1064230, CNS-1049947, CNS-1156875, CNS-0917056,
CNS-1057530, CNS-1025652, CNS-0938189, CSR-2008826, CSR-2008827];
Microsoft Research Faculty Fellowship [8300751]; Oak Ridge Award
[4000111689]
FX We would like to thank Dr. Andy Pavlo in Brown University for providing
the BitTorrent trace data. This research wassupported in part by U.S.
NSF grants OCI-1064230, CNS-1049947, CNS-1156875, CNS-0917056 and
CNS-1057530, CNS-1025652, CNS-0938189, CSR-2008826, CSR-2008827,
Microsoft Research Faculty Fellowship 8300751, and Oak Ridge Award
4000111689.
NR 42
TC 4
Z9 4
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2161-3567
BN 978-1-4673-2862-3
J9 IEEE INT CONF PEER
PY 2012
BP 203
EP 213
PG 11
WC Telecommunications
SC Telecommunications
GA BDC79
UT WOS:000312674500027
ER
PT S
AU Kim, B
Nguyen, J
Clews, PJ
Reinke, CM
Goettler, D
Leseman, ZC
El-Kady, I
Olsson, RH
AF Kim, Bongsang
Janet Nguyen
Clews, Peggy J.
Reinke, Charles M.
Goettler, Drew
Leseman, Zayd C.
El-Kady, Ihab
Olsson, Roy H., III
GP IEEE
TI THERMAL CONDUCTIVITY MANIPULATION IN SINGLE CRYSTAL SILICON VIA
LITHOGRAPHYCALLY DEFINED PHONONIC CRYSTALS
SO 2012 IEEE 25TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL
SYSTEMS (MEMS)
SE Proceedings IEEE Micro Electro Mechanical Systems
LA English
DT Proceedings Paper
CT 25th IEEE International Conference on Micro Electro Mechanical Systems
(MEMS)
CY JAN 29-FEB 02, 2012
CL Paris, FRANCE
SP IEEE, Robot & Automat Soc (RA), Reg Nord-Pas Calais
AB The thermal conductivity of single crystal silicon was engineered to be as low as 32.6W/mK using lithographically defined phononic crystals (PnCs), which is only one quarter of bulk silicon thermal conductivity [1]. Specifically sub-micron through-holes were periodically patterned in 500nm-thick silicon layers effectively enhancing both coherent and incoherent phonon scattering and resulting in as large as a 37% reduction in thermal conductivity beyond the contributions of the thin-film and volume reduction effects. The demonstrated method uses conventional lithography-based technologies that are directly applicable to diverse micro/nano-scale devices, leading to potential performance improvements where heat management is important.
C1 [Kim, Bongsang; Janet Nguyen; Clews, Peggy J.; Reinke, Charles M.; El-Kady, Ihab; Olsson, Roy H., III] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Goettler, Drew; Leseman, Zayd C.; El-Kady, Ihab] Univ New Mexico, Albuquerque, NM 87131 USA.
RP Kim, B (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM bonkim@sandia.gov
RI El-Kady, Ihab/D-2886-2013
OI El-Kady, Ihab/0000-0001-7417-9814
FU Laboratory Directed Research and Development (LDRD) program at Sandia
National Laboratories; United States Department of Energy's National
Nuclear Security Administration [DE-AC04-94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development (LDRD) program at Sandia National Laboratories. Sandia
National Laboratories is a multi- program laboratory operated by the
Sandia Corporation, Lockheed Martin Company, for the United States
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 10
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1084-6999
BN 978-1-4673-0325-5
J9 PROC IEEE MICR ELECT
PY 2012
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BDE04
UT WOS:000312912800045
ER
PT S
AU Ziaei-Moayyed, M
Resnick, P
Draper, B
Okandan, M
AF Ziaei-Moayyed, M.
Resnick, P.
Draper, B.
Okandan, M.
GP IEEE
TI RADIAL BULK-MODE VIBRATIONS IN A GATE-ALL-AROUND SILICON NANOWIRE
TRANSISTOR
SO 2012 IEEE 25TH INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL
SYSTEMS (MEMS)
SE Proceedings IEEE Micro Electro Mechanical Systems
LA English
DT Proceedings Paper
CT 25th IEEE International Conference on Micro Electro Mechanical Systems
(MEMS)
CY JAN 29-FEB 02, 2012
CL Paris, FRANCE
SP IEEE, Robot & Automat Soc (RA), Reg Nord-Pas Calais
AB This paper reports the radial bulk-mode vibrations in a gate-all-around (GAA) silicon nanowire (SiNW) transistor at 25.3GHz, with a quality factor of similar to 850 measured in air. The radial bulk-mode resonance is excited capacitively in the SiNW using the surrounding gate and gate dielectric as the transducer; the output is sensed piezoresistively by modulating the drain current in SiNW. The SiNWs are defined using standard lithography in a top-down front-end CMOS process, which allows for resonators with different frequencies to be fabricated on the same chip.
C1 [Ziaei-Moayyed, M.; Resnick, P.; Draper, B.; Okandan, M.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Ziaei-Moayyed, M (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM mziaeim@sandia.gov
NR 16
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1084-6999
BN 978-1-4673-0325-5
J9 PROC IEEE MICR ELECT
PY 2012
PG 4
WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology
SC Engineering; Science & Technology - Other Topics
GA BDE04
UT WOS:000312912800337
ER
PT S
AU Bigelow, D
Brandt, S
Bent, J
Chen, HB
AF Bigelow, David
Brandt, Scott
Bent, John
Chen, H. B.
GP IEEE
TI Valmar: High-Bandwidth Real-Time Streaming Data Management
SO 2012 IEEE 28TH SYMPOSIUM ON MASS STORAGE SYSTEMS AND TECHNOLOGIES (MSST)
SE IEEE Symposium on Mass Storage Systems and Technologies Proceedings-MSST
LA English
DT Proceedings Paper
CT IEEE 28th Symposium on Mass Storage Systems and Technologies (MSST)
CY APR 16-20, 2012
CL Monterey, CA
SP IEEE
AB In applications ranging from radio telescopes to Internet traffic monitoring, our ability to generate data has outpaced our ability to effectively capture, mine, and manage it. These ultra-high-bandwidth data streams typically contain little useful information and most of the data can be safely discarded. Periodically, however, an event of interest is observed and a large segment of the data must be preserved, including data preceding detection of the event. Doing so requires guaranteed data capture at source rates, line speed filtering to detect events and data points of interest, and TiVo-like ability to save past data once an event has been detected. We present Valmar, a system for guaranteed capture, indexing, and storage of ultra-high-bandwidth data streams. Our results show that Valmar performs at nearly full disk bandwidth, up to several orders of magnitude faster than flat file and database systems, works well with both small and large data elements, and allows concurrent read and search access without compromising data capture guarantees.
C1 [Bigelow, David; Brandt, Scott] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
[Bent, John] EMC, Hopkinton, MA USA.
[Chen, H. B.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Bigelow, D (reprint author), Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA.
EM dbigelow@cs.ucsc.edu; scott@cs.ucsc.edu; John.Bent@emc.com;
hbchen@lanl.gov
NR 17
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-195X
BN 978-1-4673-1747-4
J9 IEEE S MASS STOR SYS
PY 2012
PG 6
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BDC64
UT WOS:000312656000023
ER
PT S
AU Boboila, S
Kim, Y
Vazhkudai, SS
Desnoyers, P
Shipman, GM
AF Boboila, Simona
Kim, Youngjae
Vazhkudai, Sudharshan S.
Desnoyers, Peter
Shipman, Galen M.
GP IEEE
TI Active Flash: Out-of-core Data Analytics on Flash Storage
SO 2012 IEEE 28TH SYMPOSIUM ON MASS STORAGE SYSTEMS AND TECHNOLOGIES (MSST)
SE IEEE Symposium on Mass Storage Systems and Technologies Proceedings-MSST
LA English
DT Proceedings Paper
CT IEEE 28th Symposium on Mass Storage Systems and Technologies (MSST)
CY APR 16-20, 2012
CL Monterey, CA
SP IEEE
AB Next generation science will increasingly come to rely on the ability to perform efficient, on-the-fly analytics of data generated by high-performance computing (HPC) simulations, modeling complex physical phenomena. Scientific computing workflows are stymied by the traditional chaining of simulation and data analysis, creating multiple rounds of redundant reads and writes to the storage system, which grows in cost with the ever-increasing gap between compute and storage speeds in HPC clusters. Recent HPC acquisitions have introduced compute node-local flash storage as a means to alleviate this I/O bottleneck.
We propose a novel approach, Active Flash, to expedite data analysis pipelines by migrating to the location of the data, the flash device itself. We argue that Active Flash has the potential to enable true out-of-core data analytics by freeing up both the compute core and the associated main memory. By performing analysis locally, dependence on limited bandwidth to a central storage system is reduced, while allowing this analysis to proceed in parallel with the main application. In addition, offloading work from the host to the more power-efficient controller reduces peak system power usage, which is already in the megawatt range and poses a major barrier to HPC system scalability.
We propose an architecture for Active Flash, explore energy and performance trade-offs in moving computation from host to storage, demonstrate the ability of appropriate embedded controllers to perform data analysis and reduction tasks at speeds sufficient for this application, and present a simulation study of Active Flash scheduling policies. These results show the viability of the Active Flash model, and its capability to potentially have a transformative impact on scientific data analysis.
C1 [Boboila, Simona; Desnoyers, Peter] Northeastern Univ, Boston, MA 02115 USA.
[Kim, Youngjae; Vazhkudai, Sudharshan S.; Shipman, Galen M.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Boboila, S (reprint author), Northeastern Univ, Boston, MA 02115 USA.
EM simona@ccs.neu.edu; kimy1@ornl.gov; vazhkudaiss@ornl.gov;
pjd@ccs.neu.edu; gshipman@ornl.gov
FU ORNL, managed by UT Battelle, LLC for the U. S. DOE [DE- AC0500OR22725];
IBM Faculty Award
FX This work was sponsored in part by ORNL, managed by UT Battelle, LLC for
the U. S. DOE ( Contract No. DE- AC0500OR22725), and in part by an IBM
Faculty Award.
NR 41
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-195X
BN 978-1-4673-1747-4
J9 IEEE S MASS STOR SYS
PY 2012
PG 12
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BDC64
UT WOS:000312656000002
ER
PT S
AU Jung, M
Wilson, EH
Donofrio, D
Shalf, J
Kandemir, MT
AF Jung, Myoungsoo
Wilson, Ellis Herbert, III
Donofrio, David
Shalf, John
Kandemir, Mahmut Taylan
GP IEEE
TI NANDFlashSim: Intrinsic Latency Variation Aware NAND Flash Memory System
Modeling and Simulation at Microarchitecture Level
SO 2012 IEEE 28TH SYMPOSIUM ON MASS STORAGE SYSTEMS AND TECHNOLOGIES (MSST)
SE IEEE Symposium on Mass Storage Systems and Technologies Proceedings-MSST
LA English
DT Proceedings Paper
CT IEEE 28th Symposium on Mass Storage Systems and Technologies (MSST)
CY APR 16-20, 2012
CL Monterey, CA
SP IEEE
AB As NAND flash memory becomes popular in diverse areas ranging from embedded systems to high performance computing, exposing and understanding flash memory's performance, energy consumption, and reliability becomes increasingly important. Moreover, with an increasing trend towards multiple-die, multiple-plane architectures and high speed interfaces, high performance NAND flash memory systems are expected to continue to scale. This scaling should further reduce costs and thereby widen proliferation of devices based on the technology. However, when designing NAND flash-based devices, making decisions about the optimal system configuration is non-trivial because NAND flash is sensitive to a large number of parameters, and some parameters exhibit significant latency variations. Such parameters include varying architectures such as multi-die and multi-plane, and a host of factors that affect performance, energy consumption, diverse node technology, and reliability. Unfortunately, there are no public domain tools for high-fidelity, microarchitecture level NAND flash memory simulation in existence to assist with making such decisions. Therefore, we introduce NANDFlashSim; a latency variation-aware, detailed, and highly configurable NAND flash simulation model. NANDFlashSim implements a detailed timing model for operations in sixteen state-of-the-art NAND flash operation mode combinations. In addition, NANDFlashSim models energies and reliability of NAND flash memory based on statistics. From our comprehensive experiments using NANDFlashSim, we found that 1) most read cases were unable to leverage the highly-parallel internal architecture of NAND flash regardless of the NAND flash operation mode, 2) the main source of this performance bottleneck is I/O bus activity, not NAND flash activity itself, 3) multi-level-cell NAND flash provides lower I/O bus resource contention than single-level-cell NAND flash, but the resource contention becomes a serious problem as the number of die increases, and 4) preference to employ many dies rather than to employ many planes promises better performance in disk-friendly real workloads. The simulator can be downloaded from http://www.cse.psu.edu/similar to mqj5086/nfs.
C1 [Jung, Myoungsoo; Wilson, Ellis Herbert, III; Kandemir, Mahmut Taylan] Penn State Univ, Dept CSE, University Pk, PA 16802 USA.
[Donofrio, David; Shalf, John] Lawrence Berkeley Natl Lab, Natl Energy Res Sci Comp Ctr, Lawrence, KS USA.
RP Jung, M (reprint author), Penn State Univ, Dept CSE, University Pk, PA 16802 USA.
EM mj@cse.psu.edu; ellis@cse.psu.edu; ddonofrio@lbl.gov; jshalf@lbl.gov;
kandemir@cse.psu.edu
FU Office of Science of the U. S. Department of Energy [DE- AC02-
05CH11231]
FX We would like to express thanks to Dean Klein ( Micron Technology,
Inc.), Seung- hwan Song ( University of Minnesota), and Yulwon Cho (
Stanford University) for technical support/ discussion on NAND flash
memory technologies. We are grateful to many anonymous reviewers for
their detailed comments which have greatly improved the quality of our
paper. This research used resources of the National Energy Research
Scientific Computing Center, which is supported by the Office of Science
of the U. S. Department of Energy under Contract No. DE- AC02-
05CH11231.
NR 23
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-195X
BN 978-1-4673-1747-4
J9 IEEE S MASS STOR SYS
PY 2012
PG 12
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BDC64
UT WOS:000312656000025
ER
PT S
AU Liu, N
Cope, J
Carns, P
Carothers, C
Ross, R
Grider, G
Crume, A
Maltzahn, C
AF Liu, Ning
Cope, Jason
Carns, Philip
Carothers, Christopher
Ross, Robert
Grider, Gary
Crume, Adam
Maltzahn, Carlos
GP IEEE
TI On the Role of Burst Buffers in Leadership-Class Storage Systems
SO 2012 IEEE 28TH SYMPOSIUM ON MASS STORAGE SYSTEMS AND TECHNOLOGIES (MSST)
SE IEEE Symposium on Mass Storage Systems and Technologies Proceedings-MSST
LA English
DT Proceedings Paper
CT IEEE 28th Symposium on Mass Storage Systems and Technologies (MSST)
CY APR 16-20, 2012
CL Monterey, CA
SP IEEE
AB The largest-scale high-performance (HPC) systems are stretching parallel file systems to their limits in terms of aggregate bandwidth and numbers of clients. To further sustain the scalability of these file systems, researchers and HPC storage architects are exploring various storage system designs. One proposed storage system design integrates a tier of solid-state burst buffers into the storage system to absorb application I/O requests. In this paper, we simulate and explore this storage system design for use by large-scale HPC systems. First, we examine application I/O patterns on an existing large-scale HPC system to identify common burst patterns. Next, we describe enhancements to the CODES storage system simulator to enable our burst buffer simulations. These enhancements include the integration of a burst buffer model into the I/O forwarding layer of the simulator, the development of an I/O kernel description language and interpreter, the development of a suite of I/O kernels that are derived from observed I/O patterns, and fidelity improvements to the CODES models. We evaluate the I/O performance for a set of multiapplication I/O workloads and burst buffer configurations. We show that burst buffers can accelerate the application perceived throughput to the external storage system and can reduce the amount of external storage bandwidth required to meet a desired application perceived throughput goal.
C1 [Liu, Ning; Carothers, Christopher] Rensselaer Polytech Inst, Troy, NY 12180 USA.
[Liu, Ning; Cope, Jason; Carns, Philip; Ross, Robert] Argonne Natl Lab, Argonne, IL 60439 USA.
[Grider, Gary] Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Crume, Adam; Maltzahn, Carlos] Univ Calif, Santa Cruz, CA 95064 USA.
RP Liu, N (reprint author), Rensselaer Polytech Inst, Troy, NY 12180 USA.
EM liun2@cs.rpi.edu; copej@mcs.anl.gov; carns@mcs.anl.gov;
chrisc@cs.rpi.edu; rross@mcs.anl.gov; ggrider@lanl.gov;
adamcrume@soe.ucsc.edu; carlosm@soe.ucsc.edu
FU Office of Advanced Scientific Computer Research, Office of Science, U.
S. Dept. of Energy [DE- AC02- 06CH11357]; LANL/ UCSC Institute for
Scalable Scientific Data Management ( ISSDM); Office of Science of the
U. S. Department of Energy [DE- AC02- 06CH11357]; [DE- SC0005428]
FX This work was supported in part by the Office of Advanced Scientific
Computer Research, Office of Science, U. S. Dept. of Energy, under
Contract DE- AC02- 06CH11357 and partially by Contract DE- SC0005428 and
the LANL/ UCSC Institute for Scalable Scientific Data Management (
ISSDM). This research used resources of the Argonne Leadership Computing
Facility at Argonne National Laboratory, which is supported by the
Office of Science of the U. S. Department of Energy under contract DE-
AC02- 06CH11357.
NR 44
TC 0
Z9 0
U1 0
U2 6
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2160-195X
BN 978-1-4673-1747-4
J9 IEEE S MASS STOR SYS
PY 2012
PG 11
WC Computer Science, Hardware & Architecture; Computer Science, Theory &
Methods
SC Computer Science
GA BDC64
UT WOS:000312656000005
ER
PT S
AU Chen, Y
Chen, C
Sun, XH
Gropp, WD
Thakur, R
AF Chen, Yong
Chen, Chao
Sun, Xian-He
Gropp, William D.
Thakur, Rajeev
GP IEEE
TI A Decoupled Execution Paradigm for Data-Intensive High-End Computing
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
DE decoupled execution paradigm; high-end computing; data-intensive
computing; storage
ID ARCHITECTURE; I/O
AB High-end computing (HEC) applications in critical areas of science and technology tend to be more and more data intensive. I/O has become a vital performance bottleneck of modern HEC practice. Conventional HEC execution paradigms, however, are computing-centric for computation intensive applications. They are designed to utilize memory and CPU performance and have inherent limitations in addressing the critical I/O bottleneck issues of HEC. In this study, we propose a decoupled execution paradigm (DEP) to address the challenging I/O bottleneck issues. DEP is the first paradigm enabling users to identify and handle data-intensive operations separately. It can significantly reduce costly data movement and is better than the existing execution paradigms for data-intensive applications. The initial experimental tests have confirmed its promising potential. Its data-centric architecture could have an impact in future HEC systems, programming models, and algorithms design and development.
C1 [Chen, Yong; Chen, Chao] Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA.
[Sun, Xian-He] Illinois Inst Technol, Dept Comp Sci, Chicago, MA USA.
[Gropp, William D.] Univ Illinois, Dept Comp Sci, Urbana, IL USA.
[Thakur, Rajeev] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL USA.
RP Chen, Y (reprint author), Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA.
EM yong.chen@ttu.edu; chao.chen@ttu.edu; sun@iit.edu; wgropp@illinois.edu;
thakur@mcs.anl.gov
OI Gropp, William/0000-0003-2905-3029
FU National Science Foundation [CNS-1162540, CNS-1162488, CNS-1161507]
FX This research is sponsored in part by the National Science Foundation
under grant CNS-1162540, CNS-1162488, and CNS-1161507. The authors
acknowledge the High Performance Computing Center ( HPCC) at Texas Tech
University at Lubbock for providing HPC resources that have contributed
to the research results reported within this paper. URL: http:// www.
hpcc. ttu. edu.
NR 48
TC 0
Z9 0
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 200
EP 208
DI 10.1109/CLUSTER.2012.80
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500023
ER
PT J
AU Budiman, AS
Shin, H
Kim, BJ
Hwang, SH
Son, HY
Suh, MS
Chung, QH
Byun, KY
Joo, YC
Caramto, R
Smith, L
Kunz, M
Tamura, N
AF Budiman, A. S.
Shin, H.
Kim, B. -J.
Hwang, S. -H.
Son, H. -Y.
Suh, M. -S.
Chung, Q. -H.
Byun, K. -Y.
Joo, Y. -C.
Caramto, R.
Smith, L.
Kunz, M.
Tamura, N.
GP IEEE
TI Comparison of Mechanical Stresses of Cu Through-Silicon Via (TSV)
Samples Fabricated by Hynix vs. SEMATECH using Synchrotron X-ray
Microdiffraction for 3-D Integration and Reliability
SO 2012 IEEE INTERNATIONAL INTERCONNECT TECHNOLOGY CONFERENCE (IITC)
LA English
DT Proceedings Paper
CT IEEE International Interconnect Technology Conference (IITC)
CY JUN 04-06, 2012
CL San Jose, CA
SP ASM Int, J X Nippon Mining & Metals USA Inc, SAFC Hitech, Air Liquide, BASF, Aetrium, Air Prod, Appl Mat, Inc, Atotech, Enthone, IBM Corp, IMEC, Lam Res, Metryx, Qualitau, Tokyo Electron (TEL), Tosoh SMD, IEEE
ID LINES
AB One key to enable the successful implementation of 3-D interconnects using Through-Silicon Via (TSV) is the control of the mechanical stresses. The synchrotron-sourced X-ray microdiffraction technique has been recognized to allow some important advantages compared to other techniques. Using this approach, we have studied Cu TSV samples from Hynix, Inc. as well as from SEMATECH and found interesting differences in the stress states of the Cu TSV. We proposed an explanation of the observed differences. This understanding could lead to improved stress control in Cu TSV as well as to reduce the impact to the silicon electron mobility.
C1 [Budiman, A. S.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol CINT, POB 1663, Los Alamos, NM 87545 USA.
[Shin, H.; Kim, B. -J.; Hwang, S. -H.; Joo, Y. -C.] Seoul Natl Univ SNU, Dept Mat Sci Engn, Seoul, South Korea.
[Son, H. -Y.; Suh, M. -S.; Chung, Q. -H.; Byun, K. -Y.] Hynix Semicond Inc, R& Div, PKG Dev Grp, Seoul, South Korea.
[Caramto, R.; Smith, L.] SEMATECH, Albany, NY 12203 USA.
[Kunz, M.; Tamura, N.] Lawrence Berkeley Natl Lab LBNL, Adv Light Source ALS, Berkeley, CA 94720 USA.
RP Budiman, AS (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol CINT, POB 1663, Los Alamos, NM 87545 USA.
EM suriadi@alumni.stanford.edu
NR 10
TC 0
Z9 0
U1 1
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-1137-3
PY 2012
PG 3
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BDC15
UT WOS:000312547500060
ER
PT S
AU Abhyankar, S
Flueck, AJ
AF Abhyankar, Shrirang
Flueck, Alexander J.
GP IEEE
TI An Implicitly-Coupled Solution Approach for Combined Electromechanical
and Electromagnetic Transients Simulation
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Hybrid simulator; Implicitly-coupled solution approach; Transient
stability; Electromagnetic transients
ID DYNAMIC-ANALYSIS; SYSTEMS
AB This paper presents a novel implicitly-coupled solution approach for the combined electromechanical and electromagnetic transients simulation. Unlike the existing hybrid simulators that use an explicit approach to interface separate transient stability (TS) and electromagnetic transients (EMT) programs, the authors propose combining the equations of the two simulators and solving them simultaneously by an implicit approach. To combine the two sets of equations with their different time steps, and ensure that the TS and EMT solutions are consistent, the equations for TS and coupled-in-time EMT equations are solved simultaneously, referred to as TSEMT simulation. The simulation results for the proposed implicitly-coupled solution approach on the WECC 9-bus system are discussed. Along with the implicitly-coupled solution approach, a novel strategy, referred to as TS3ph-TSEMT, based on difference between the phasor boundary bus voltages of the detailed and external systems is also proposed to terminate the implicitly-coupled TSEMT simulation and continue with only the TS simulation. The computational efficiency of the proposed TS3ph-TSEMT approach is presented for the 9-bus and 118-bus systems.
C1 [Abhyankar, Shrirang] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
RP Abhyankar, S (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM abhyshr@mcs.anl.gov; flueck@iit.edu
NR 17
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493707014
ER
PT S
AU Bank, J
AF Bank, Jason
GP IEEE
TI Development of a Distribution Level Data Acquisition System and
Preliminary Results
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
AB With the development of smart grids and the deployment of their enabling technologies, improved data acquisition will be needed at the distribution level to understand the full impact of these changes. With this in mind, NREL has developed a high-speed measurement and data collection network targeted specifically at the distribution level. This network is based around adaptable, rugged measurement devices designed for deployment at a variety of low and medium voltage locations below the substation. Each of these devices is capable of real-time data transmission via an internet connection.
This paper presents the data collection results and a preliminary data analysis, as well as a brief introduction to some of the distribution level visualization applications that have been developed based on the incoming data streams.
C1 Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Bank, J (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
EM jason.bank@nrel.gov
NR 5
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493703092
ER
PT S
AU Bent, R
Toole, GL
AF Bent, Russell
Toole, G. Loren
GP IEEE
TI Grid Expansion Planning for Carbon Emissions Reduction
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Carbon Emissions; Generation Expansion Planning; Transmission Network
Expansion Planning; Simulation Optimization; Non-linear Optimization;
Local Search
ID CONSTRUCTIVE HEURISTIC ALGORITHM; LINEAR-PROGRAMMING MODEL; GENERATION;
TRANSMISSION; SYSTEM; CRITERIA
AB In recent years the grid expansion planning problem has become increasingly complex and challenging. The integration of renewable generation is a source of many of these challenges. These challenges often include a deficiency in transmission capacity in regions with high potential for renewable energy production. Historically, this lack of capacity has had adverse effects such as negative price market conditions or the curtailing of other green generation sources. This paper considers a combined generation and transmission expansion model to avoid the curtailment of existing green generation sources, in other words maximize the realized carbon reduction of adding renewable generation. Recent work on Randomized Constructive Heuristics (RCH) has shown this approach to be quite effective in addressing the Transmission Network Expansion Planning (TNEP) problem. In this paper, we propose a generalization of RCH to handle simultaneous carbon reduction and expansion cost objectives as well as multi-scenario planning.
C1 [Bent, Russell] Los Alamos Natl Lab, Decis Applicat Div, Energy & Infrastruct Anal Grp, Los Alamos, NM 87545 USA.
RP Bent, R (reprint author), Los Alamos Natl Lab, Decis Applicat Div, Energy & Infrastruct Anal Grp, Los Alamos, NM 87545 USA.
NR 30
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705034
ER
PT S
AU Chassin, DP
Kalsi, K
AF Chassin, D. P.
Kalsi, K.
GP IEEE
TI Effects of Demand Response on Retail and Wholesale Power Markets
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE economic dispatch; demand response; power system control; load
management; load shedding; load modeling; wind power generation
AB Demand response has grown to be a part of the repertoire of resources used by utilities to manage the balance between generation and load. In recent years, advances in communications and control technology have enabled utilities to consider continuously controlling demand response to meet generation, rather than the other way around. This paper discusses the economic applications of a general method for load resource analysis that parallels the approach used to analyze generation resources and uses the method to examine the results of the US Department of Energy's Olympic Peninsula Demonstration Testbed. A market-based closed-loop system of controllable assets is discussed with necessary and sufficient conditions on system controllability, observability and stability derived.
C1 [Chassin, D. P.; Kalsi, K.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Chassin, DP (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM David.Chassin@pnnl.gov; Karanjit.Kalsi@pnnl.gov
NR 31
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706114
ER
PT S
AU Chavarria-Miranda, D
Huang, ZY
Chen, YS
AF Chavarria-Miranda, Daniel
Huang, Zhenyu
Chen, Yousu
GP IEEE
TI High-Performance Computing (HPC): Application & Use in the Power Grid
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE High Performance Computing; Parallel Computing; Power Engineering; State
Estimation; Contingency Analysis
AB The intent of this paper is to present a tutorial overview of high-performance computing (HPC) and its application to solving power system problems. The emphasis is on the trend of multi-core HPC computers and on the need for parallel computing to utilize these computers. Following the introduction of the concept of HPC, several types of HPC hardware and software are presented. HPC programming tools are important to facilitate programming with HPC computers. Different programming tools are introduced, with a specific example of parallel codes. HPC applications to power systems are presented for solving problems of state estimation and contingency analysis using HPC computers. Performance improvement is significant as shown in these applications. Further research and code development are necessary to expand the use of HPC in the power system domain.
C1 [Chavarria-Miranda, Daniel; Huang, Zhenyu] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Chavarria-Miranda, D (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM daniel.chavarria@pnnl.gov; zhenyu.huang@pnnl.gov; yousu.chen@pnnl.gov
NR 16
TC 0
Z9 0
U1 0
U2 7
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706008
ER
PT S
AU Coles, G
Sadovsky, A
Du, PW
AF Coles, Garill
Sadovsky, Art
Du, Pengwei
GP IEEE
TI Quantifying the Impact of Adverse Events on the Electricity Grid as a
Function of Grid Topology
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Grid vulnerability; topological parameters; risk assessment
ID SECURITY; SYSTEMS
AB Traditional approaches to the study of grid vulnerability have taken an asset based approach, which seeks to identify those assets most likely to result in grid-wide failures or disruptions in the event that they are compromised. We propose an alternative approach to the study of grid vulnerability, one based on the topological structure of the entire grid. We propose a method that will identify topological parameters most closely related to the ability of the grid to withstand an adverse event. We compare these topological parameters in terms of their impact on the vulnerability metric we have defined, referred to as the grid's "survivability". Our approach is motivated by Paul Baran's work on communications networks, which also studied vulnerability in terms of network-wide parameters. Our approach is useful both as a planning model for evaluating proposed changes to a grid and as a risk assessment tool.
C1 [Coles, Garill; Sadovsky, Art; Du, Pengwei] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Coles, G (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM Garill.Coles@pnnl.gov; art.sadovsky@pnnl.gov; Pengwei.du@pnnl.gov
NR 15
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 5
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706132
ER
PT S
AU Denholm, P
AF Denholm, P.
GP IEEE
TI Energy Storage to Reduce Renewable Energy Curtailment
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
AB Curtailment of renewable energy generation is an increasing concern in electric power systems. Due to transmission constrains and generator flexibility an increasing fraction of wind generation is curtailed. This decreases the environmental benefits of renewable energy while increasing heir costs. Energy storage is one option to decrease renewable curtailment. This paper discusses how energy storage can be used to increase grid flexibility and reduce curtailment. It is also compared to other options on the flexibility supply curve for integrating variable generation.
C1 [Denholm, P.] Natl Renewable Energy Lab, Strateg Energy Anal Ctr, Golden, CO 80401 USA.
RP Denholm, P (reprint author), Natl Renewable Energy Lab, Strateg Energy Anal Ctr, Golden, CO 80401 USA.
EM paul.denholm@nrel.gov
NR 8
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705121
ER
PT S
AU Diao, RS
Lu, S
Elizondo, M
Mayhorn, E
Zhang, Y
Samaan, N
AF Diao, Ruisheng
Lu, Shuai
Elizondo, Marcelo
Mayhorn, Ebony
Zhang, Yu
Samaan, Nader
GP IEEE
TI Electric Water Heater Modeling and Control Strategies for Demand
Response
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Centralized control; decentralized control; demand response; electrical
water heater; smart grid
AB Demand response (DR) has a great potential to provide balancing services at normal operating conditions and emergency support when a power system is subject to large disturbances. Effective DR control strategies can help relieve balancing and frequency response burdens on conventional generators in addition to reducing generation and transmission investments needed to meet peak demands. This paper discusses modeling residential electric water heaters (EWH) in households and tests their responses with various control strategies implementing DR. The open-loop response of EWH to a centralized control signal is studied by adjusting temperature settings to provide balancing services; and two types of decentralized controllers are tested to provide frequency support following generator trips. EWH models are included in a simulation platform capable of performing electromechanical simulations, which contains 147 households in a distribution feeder. Simulation results show the effectiveness of EWH responses and its dependence on hot water usage. These results provide insight and suggest the need for control strategies to achieve better performance in demand response implementations.
C1 [Diao, Ruisheng; Lu, Shuai; Elizondo, Marcelo; Zhang, Yu; Samaan, Nader] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Diao, RS (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM ruisheng.diao@pnnl.gov; shuai.lu@pnnl.gov; marcelo.elizondo@pnnl.gov;
emayhorn@tamu.edu; yu.zhang@pnnl.gov; nader.samaan@pnnl.gov
NR 12
TC 0
Z9 0
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706144
ER
PT S
AU Diao, RS
Samaan, N
Makarov, Y
Hafen, R
Ma, J
AF Diao, Ruisheng
Samaan, Nader
Makarov, Yuri
Hafen, Ryan
Ma, Jian
GP IEEE
TI Planning for Variable Generation Integration through Balancing
Authorities Consolidation
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Balancing authority; balancing authorities consolidation; cross
correlation; wind forecast error; renewable integration; variable
generation; wind energy
AB As more and more variable generation is integrated into power grids, many challenges and concerns arise for an individual balancing authority (BA) to balance the system with limited flexible generation resources. Consolidating balancing authorities provides a promising method to mitigate these problems by enabling the sharing of balancing resources through operating different BAs as a single BA. The diversity in load and renewable generation over a wide area can be effectively used, which makes it possible to achieve significant savings in balancing requirements. This paper develops a detailed procedure to compute savings in load following and regulation service requirements due to BAs consolidation. It proposes several evaluation metrics for demonstrating the benefits of BA consolidation. Several study scenarios are designed for a set of BAs in the western United States to test the proposed procedure. Results have shown significant savings in the capacity, ramp rate, and energy of balancing service requirements. Important factors affecting the savings, such as forecast accuracy and cross correlation between forecast errors, are also discussed.
C1 [Diao, Ruisheng; Samaan, Nader; Makarov, Yuri; Hafen, Ryan; Ma, Jian] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Diao, RS (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM ruisheng.diao@pnnl.gov; nader.samaan@pnnl.gov; yuri.makarov@pnnl.gov;
ryan.hafen@pnnl.gov; jian.ma@pnnl.gov
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493703109
ER
PT S
AU Duignan, R
Dent, CJ
Mills, A
Samaan, N
Milligan, M
Keane, A
O'Malley, M
AF Duignan, Roisin
Dent, Chris J.
Mills, Andrew
Samaan, Nader
Milligan, Michael
Keane, Andrew
O'Malley, Mark
GP IEEE
TI Capacity Value of Solar Power
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE capacity value; power system operation and planning; solar power
ID PHOTOVOLTAICS; CAPABILITY
AB Evaluating the capacity value of renewable energy sources can pose significant challenges due to their variable and uncertain nature. In this paper the capacity value of solar power is investigated. Solar capacity value metrics and their associated calculation methodologies are reviewed and several solar capacity studies are summarized. The differences between wind and solar power are examined, the economic importance of solar capacity value is discussed and other assessments and recommendations are presented.
C1 [Duignan, Roisin; Keane, Andrew; O'Malley, Mark] Univ Coll Dublin, Sch Elect Elect & Commun Engn, Dublin, Ireland.
[Dent, Chris J.] Univ Durham, Sch Engn & Comp Sci, Durham DH1 3HP, England.
[Mills, Andrew] Lawrence Berkeley Natl Lab, Ectric Markets & Policy Grp, Lawrence, KS USA.
[Samaan, Nader] Pacific NW Natl Lab, Adv Power & Energy Syst Grp, Richland, WA 99352 USA.
[Milligan, Michael] Natl Renewable Energy Lab, Transmiss & Grid Integrat Grp, Golden, CO USA.
RP Duignan, R (reprint author), Univ Coll Dublin, Sch Elect Elect & Commun Engn, Dublin, Ireland.
EM roisin.duignan@ucd.ie; chris.dent@durham.ac.uk; admills@lbl.gov;
nader.samaan@pnnl.gov; Michael.milligan@nrel.gov; andrew.keane@ucd.ie;
mark.omalley@ucd.ie
RI Mills, Andrew/B-3469-2016
OI Mills, Andrew/0000-0002-9065-0458
FU EPSRC [EP/K03832X/, EP/K036211/1]; EPRI; NSF [1243482]
FX The authors acknowledge valuable discussions with colleagues at their
institutions and with other members of the task force, and thank A.
Mills for help with references on utility studies. The participation of
A.L. Wilson, S. Zachary and C.J. Dent was supported by EPSRC grants
EP/K03832X/1 and EP/K036211/1, and by EPRI. The work of C. Bothwell was
in part supported by NSF grant OISE 1243482 (WINDINSPIRE).
NR 21
TC 0
Z9 0
U1 0
U2 6
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705100
ER
PT S
AU Ela, E
Kirby, B
Navid, N
Smith, JC
AF Ela, Erik
Kirby, Brendan
Navid, Nivad
Smith, J. Charles
GP IEEE
TI Effective Ancillary Services Market Designs on High Wind Power
Penetration Systems
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE ancillary services; frequency response; market operations; operating
reserves; power system operations; voltage support; wind integration;
wind power
AB Ancillary services markets have been developed in many of the restructured power system regions throughout the world. Ancillary services include the services that support the provision of energy to support power system reliability. The ancillary services markets are tied tightly to the design of the energy market and to the physics of the system and therefore careful consideration of power system economics and engineering must be considered in their design. This paper focuses on how the ancillary service market designs are implemented and how they may require changes on systems with greater penetrations of variable renewable energy suppliers, in particular wind power.
C1 [Ela, Erik] Natl Renewable Energy Lab, Grid Integrat Team, Golden, CO 80401 USA.
RP Ela, E (reprint author), Natl Renewable Energy Lab, Grid Integrat Team, Golden, CO 80401 USA.
EM erik.ela@nrel.gov; kirbybj@ieee.org; nnavid@midwestiso.org;
Charlie@uwig.org
NR 32
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705033
ER
PT S
AU Ellis, A
Nelson, R
Von Engeln, E
Walling, R
MacDowell, J
Casey, L
Seymour, E
Peter, W
Barker, C
Kirby, B
Williams, JR
AF Ellis, A.
Nelson, R.
Von Engeln, E.
Walling, R.
MacDowell, J.
Casey, L.
Seymour, E.
Peter, W.
Barker, C.
Kirby, B.
Williams, J. R.
GP IEEE
TI Reactive Power Performance Requirements for Wind and Solar Plants
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE interconnection requirements; reactive power; solar; variable
generation; voltage regulation; wind
AB A current challenge faced by the electric utility industry is to determine how variable generation plants (wind and solar) should contribute to the reliable operation of the electric grid, especially as penetration of these resources continues its upward trend. Traditionally, bulk system voltage regulation has predominately been supplied by synchronous generators, and this is reflected in the language of industry requirements. Where variable generation is concerned the requirements are vague and unclear. The technology used in variable generation plants are capable of providing voltage support, but will require a shift from how these plants are traditionally operated.
This paper discusses the capability of wind and solar plants to provide voltage regulation. It also examines the deficiencies in existing standards and provides recommendations to improve upon existing requirements in order to clearly define the role of variable generation in providing voltage support to the bulk electric grid.
C1 [Ellis, A.] Sandia Natl Labs, PV Grid Integrat Program Area, Albuquerque, NM 87185 USA.
RP Ellis, A (reprint author), Sandia Natl Labs, PV Grid Integrat Program Area, POB 5800, Albuquerque, NM 87185 USA.
EM kirbybj@ieee.org
NR 7
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706080
ER
PT S
AU Ellis, A
Nelson, R
Von Engeln, E
Walling, R
MacDowell, J
Casey, L
Seymour, E
Peter, W
Barker, C
Kirby, B
Williams, JR
AF Ellis, A.
Nelson, R.
Von Engeln, E.
Walling, R.
MacDowell, J.
Casey, L.
Seymour, E.
Peter, W.
Barker, C.
Kirby, B.
Williams, J. R.
GP IEEE
TI Review of Existing Reactive Power Requirements for Variable Generation
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Interconnection Requirements; reactive power; solar plant; variable
generation; voltage regulation; wind plant
AB In order to reliably operate the bulk electric grid generators are expected to meet certain reactive power requirements depending on the system they operate in. In the past reactive power requirements were tailored to the capabilities of synchronous generators. Variable generators such as wind and solar plants were in the past small enough relative to the entire system that they were not required to supply voltage support to the grid. As the penetration of renewable resources have grown beyond insignificance, it is now the trend that variable generators connected to transmission and sub-transmission grids should be required to provide reactive power support.
The goal of this paper is to educate the reader on the current state of reactive power requirements for variable generation. This paper discusses reactive power requirements from various regions across the world with a focus on those in North America.
C1 [Ellis, A.; Williams, J. R.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Ellis, A (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM kirbybj@ieee.org
NR 16
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706067
ER
PT S
AU Epperly, T
Edmunds, T
Lamont, A
Meyers, C
Smith, S
Yao, YM
Drayton, G
AF Epperly, Thomas
Edmunds, Thomas
Lamont, Alan
Meyers, Carol
Smith, Steven
Yao, Yiming
Drayton, Glenn
GP IEEE
TI High-Performance Computing for Electric Grid Planning and Operations
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Supercomputers; parallel machines; power generation planning;
photovoltaic systems; wind power generation
AB High-performance computing (HPC) is having a profound impact on scientific discovery and engineering in a variety of areas, and researchers are beginning to demonstrate how HPC can impact problems in energy grid planning and operations. Contemporary supercomputers can perform over 10(15) floating point operations per second and have more than 1.4 petabytes of memory - roughly 5 orders of magnitude greater than a commodity PC workstation. This level of computing power changes the very nature of problems that can be solved.
Researchers at LLNL have used HPC systems to accelerate execution of a renewables planning study, by solving a thousand unit commitment and dispatch problems in parallel; this generated new insights and allowed for a more detailed study than would have been otherwise achievable. Ongoing work at LLNL includes the development and testing of new parallel algorithms for unit commitment problems, including multi-scenario stochastic unit commitment. These algorithms will enable greater grid and time resolution and provide more accurate solutions because of the increase in model fidelity.
C1 [Epperly, Thomas; Edmunds, Thomas; Lamont, Alan; Meyers, Carol; Smith, Steven; Yao, Yiming] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
RP Epperly, T (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA.
EM epperly2@llnl.gov
NR 9
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493703089
ER
PT S
AU Eto, JH
LaCommare, KH
AF Eto, Joseph H.
LaCommare, Kristina Hamachi
GP IEEE
TI A Quantitative Assessment of Utility Reporting Practices for Reporting
Electric Power Distribution Events
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Distribution system; power distribution reliability; reliability indices
AB Metrics for reliability, such as the frequency and duration of power interruptions, have been reported by electric utilities for many years. This study examines current utility practices for collecting and reporting electricity reliability information and discusses challenges that arise in assessing reliability because of differences among these practices. The study is based on reliability information for year 2006 reported by 123 utilities in 37 states representing over 60% of total U. S. electricity sales. We quantify the effects that inconsistencies among current utility reporting practices have on comparisons of System Average Interruption Duration Index (SAIDI) and System Average Interruption Frequency Index (SAIFI) reported by utilities. We recommend immediate adoption of IEEE Std. 1366-2003 as a consistent method for measuring and reporting reliability statistics.
C1 [Eto, Joseph H.; LaCommare, Kristina Hamachi] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Eto, JH (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM JHEto@lbl.gov; KSHamachi@lbl.gov
NR 8
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700111
ER
PT S
AU Fan, N
Chen, R
Watson, JP
AF Fan, Neng
Chen, Richard
Watson, Jean-Paul
GP IEEE
TI N-1-1 Contingency-Constrained Optimal Power Flow by Interdiction Methods
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE N-1-1 contingency analysis; optimal power flow; power flow interdiction;
mixed integer programming
ID GRIDS
AB N-1-1 contingency analysis considers the consecutive loss of two elements in a power system, with intervening time for operator adjustments; the associated reliability criterion was recently included in the NERC Standard TPL-001-1. In this paper, we introduce optimization models for N-1-1 contingency analysis, based on DC optimal power flow considerations. We use mixed-integer programming approaches to optimally model the system adjustments required to avoid potential cascading outages during the primary and secondary contingencies. Contingencies are determined via worst-case interdiction analysis. To facilitate operation during the secondary contingency, line overloads and load shedding are allowed. We test our models and algorithms on several IEEE test systems. Our computational experiments indicate potential for the models to augment comprehensive system operations models, such as unit commitment.
C1 [Fan, Neng; Watson, Jean-Paul] Sandia Natl Labs, Discrete Math & Complex Syst Dept, Albuquerque, NM 87185 USA.
RP Fan, N (reprint author), Sandia Natl Labs, Discrete Math & Complex Syst Dept, POB 5800, Albuquerque, NM 87185 USA.
EM nnfan@sandia.gov; rlchen@sandia.gov; jwatson@sandia.gov
NR 19
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493707062
ER
PT S
AU Ferryman, T
Haglin, D
Vlachopoulou, M
Yin, J
Shen, C
Tuffner, F
Lin, G
Zhou, N
Tong, JZ
AF Ferryman, Tom
Haglin, David
Vlachopoulou, Maria
Yin, Jian
Shen, Chao
Tuffner, Frank
Lin, Guang
Zhou, Ning
Tong, Jianzhong
GP IEEE
TI Net Interchange Schedule Forecasting of Electric Power Exchange for
RTO/ISOs
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE power grid operations; net interchange schedule; forecasting; prediction
AB Neighboring regional transmission organizations (RTO) and independent system operators (ISOs) exchange electric power to enable efficient and reliable operation of the grid. Net interchange (NI) schedule is the sum of the transactions (in MW) between an RTO/ISO and its neighbors. Effective forecasting of the amount of actual NI can improve grid operation efficiency and avoid the volatility of the energy markets due to changes of NI schedules. This paper presents results of a preliminary investigation into various methods of prediction that may result in improved prediction accuracy. The methods studied are linear regression, forward regression, stepwise regression, and support vector machine (SVM) regression. The effectiveness of these methods is compared using the 64 weeks of field measurement data from PJM. The objective is to explore the effectiveness of the prediction methods under different scenarios.
C1 [Ferryman, Tom] Pacific NW Natl Lab, Stat & Sensor Analyt Grp, Richland, WA 99352 USA.
RP Ferryman, T (reprint author), Pacific NW Natl Lab, Stat & Sensor Analyt Grp, Richland, WA 99352 USA.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493701065
ER
PT S
AU Gevorgian, V
Singh, M
Muljadi, E
AF Gevorgian, V.
Singh, M.
Muljadi, E.
GP IEEE
TI Symmetrical and Unsymmetrical Fault Currents of a Wind Power Plant
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Fault contribution; induction generator; protection; short circuit; wind
power plant; wind turbine
AB The size of wind power plants (WPPs) keeps getting bigger and bigger. The number of wind plants in the U.S. has increased very rapidly in the past 10 years. It is projected that in the U.S., the total wind power generation will reach 330 GW by 2030. As the importance of WPPs increases, planning engineers must perform impact studies used to evaluate short-circuit current (SCC) contribution of the plant into the transmission network under different fault conditions. This information is needed to size the circuit breakers, to establish the proper system protection, and to choose the transient suppressor in the circuits within the WPP. This task can be challenging to protection engineers due to the topology differences between different types of wind turbine generators (WTGs) and the conventional generating units.
This paper investigates the short-circuit behavior of a WPP for different types of wind turbines. Both symmetrical faults and unsymmetrical faults are investigated. Three different software packages are utilized to develop this paper. Time domain simulations and steady-state calculations are used to perform the analysis.
C1 [Gevorgian, V.; Singh, M.; Muljadi, E.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Gevorgian, V (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM vahan.gevorgian@nrel.gov; mohit.singh@nrel.gov; eduard.muljadi@nrel.gov
NR 9
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705042
ER
PT S
AU Giacomoni, AM
Goldsmith, SY
Amin, SM
Wollenberg, BF
AF Giacomoni, Anthony M.
Goldsmith, Steven Y.
Amin, S. Massoud
Wollenberg, Bruce F.
GP IEEE
TI Analysis, Modeling, and Simulation of Autonomous Microgrids with a High
Penetration of Renewables
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Distributed Energy Resources; Microgrids; Monte Carlo Simulations; Power
Systems; Smart Grids
AB Autonomous microgrids are operated and coordinated by intelligent automatic controls without any reliance on human intervention. In this paper, a simulation framework utilizing sequential Monte Carlo simulations is developed to investigate the performance of autonomous microgrids that have the ability to interconnect to achieve adequate load service. Detailed models of the various microgrid components and interconnection policies implemented are provided. In order to minimize the exposure of each microgrid to vulnerabilities, it is also desired that the number of interconnections be minimal. Using the developed framework, various simulation scenarios are explored. Results show the impact of storage capacity, intermittent distributed energy resources (DERs), and the ability to interconnect occasionally with other microgrids on each microgrid's security and reliability as measured using standard risk indices.
C1 [Giacomoni, Anthony M.; Amin, S. Massoud; Wollenberg, Bruce F.] Univ Minnesota, Elect & Comp Engn Dept, Minneapolis, MN 55455 USA.
[Goldsmith, Steven Y.; Amin, S. Massoud] Univ Minnesota, Technol Leadership Inst, Minneapolis, MN 55455 USA.
[Goldsmith, Steven Y.] Sandia Natl Labs, Adv Informat Syst Lab, Albuquerque, NM 87185 USA.
RP Giacomoni, AM (reprint author), Univ Minnesota, Elect & Comp Engn Dept, Minneapolis, MN 55455 USA.
EM giaco013@umn.edu; golds170@umn.edu; amin@umn.edu; wollenbe@umn.edu
FU Sandia National Laboratories under Grand Challenge LDRD [11-0268];
United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was supported by Sandia National Laboratories under Grand
Challenge LDRD number 11-0268. Sandia is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the
United States Department of Energy's National Nuclear Security
Administration under Contract DE-AC04-94AL85000.
NR 6
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700025
ER
PT S
AU Giani, A
Bent, R
Hinrichs, M
McQueen, M
Poolla, K
AF Giani, Annarita
Bent, Russell
Hinrichs, Mark
McQueen, Miles
Poolla, Kameshwar
GP IEEE
TI Metrics for Assessment of Smart Grid Data Integrity Attacks
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
ID STATE ESTIMATION
AB There is an emerging consensus that the nation's electricity grid is vulnerable to cyber attacks. This vulnerability arises from the increasing reliance on using remote measurements, transmitting them over legacy data networks to system operators who make critical decisions based on available data.
Data integrity attacks are a class of cyber attacks that involve a compromise of information that is processed by the grid operator. This information can include meter readings of injected power at remote generators, power flows on transmission lines, and relay states. These data integrity attacks have consequences only when the system operator responds to compromised data by re-dispatching generation under normal or contingency protocols. These consequences include (a) financial losses from sub-optimal economic dispatch to service loads, (b) robustness/resiliency losses from placing the grid at operating points that are at greater risk from contingencies, and (c) systemic losses resulting from cascading failures induced by poor operational choices.
This paper is focussed on understanding the connections between grid operational procedures and cyber attacks. We first offer an example to illustrate how data integrity attacks can cause economic and physical damage by misleading operators into taking inappropriate decisions. We then focus on unobservable data integrity attacks involving power meter data. These are coordinated attacks where the compromised data is consistent with the physics of power flow, and is therefore passed by any bad data detection algorithm. We develop metrics to assess the economic impact of these attacks under operator re-dispatch decisions using optimal power flow methods. These metrics can be used to prioritize the adoption of appropriate countermeasures including PMU placement, encryption, hardware upgrades, and advanced detection algorithms.
C1 [Giani, Annarita] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA.
RP Giani, A (reprint author), Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA.
NR 22
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705138
ER
PT S
AU Ibanez, E
Milligan, M
AF Ibanez, Eduardo
Milligan, Michael
GP IEEE
TI Impact of Transmission on Resource Adequacy in Systems with Wind and
Solar Power
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Power transmission; power systems reliability; probability; solar
energy; wind energy
AB Variable generation is on track to become a significant contributor to electric power systems worldwide. Thus, it is important to analyze the effect that renewables will have on the reliability of systems. In this paper we present a new tool being implemented at the National Renewable Energy Laboratory, which allows the inclusion of variable generation in the power system resource adequacy. The tool is used to quantify a first estimate of the potential contribution of transmission to reliability in highly interconnected systems and an example is provided using the Western Interconnection footprint.
C1 [Ibanez, Eduardo; Milligan, Michael] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Ibanez, E (reprint author), Natl Renewable Energy Lab, 1617 Cole Blvd, Golden, CO 80401 USA.
EM eduardo.ibanez@nrel.gov; michael.milligan@nrel.gov
NR 16
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 5
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700036
ER
PT S
AU Jin, SS
Chen, YS
Rice, M
Liu, Y
Gorton, I
AF Jin, Shuangshuang
Chen, Yousu
Rice, Mark
Liu, Yan
Gorton, Ian
GP IEEE
TI A Testbed for Deploying Distributed State Estimation in Power Grid
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE high performance computing; distributed state estimation; distributed
systems; power grid
AB With the increasing demand, scale, and data information of power systems, fast distributed applications are becoming more important in power system operation and control. This paper proposes a testbed for evaluating power system distributed applications, considering data exchange among distributed areas. A high-performance computing (HPC) version of distributed state estimation is implemented and used as an example distributed application. The IEEE 118-bus system is used to deploy the parallel distributed state estimation, and the MeDICi middleware is used for data communication. The performance of the testbed demonstrates its capability to evaluate parallel distributed state estimation by leveraging the HPC paradigm. This testbed can also be applied to evaluate other distributed applications.
C1 [Jin, Shuangshuang; Chen, Yousu] Battelle Pacific NW Natl Lab, Seattle, WA 98109 USA.
[Rice, Mark; Liu, Yan; Gorton, Ian] Battelle Pacific Northwest Natl Lab, Richland, WA 99352 USA.
RP Jin, SS (reprint author), Battelle Pacific NW Natl Lab, Seattle, WA 98109 USA.
EM shuangshuang.jin@pnl.gov; yousu.chen@pnl.gov; mark.rice@pnl.gov;
yan.liu@pnl.gov; ian.gorton@pnl.gov
FU Future Power Grid Initiative; Pacific Northwest National Laboratory
(PNNL)
FX This work is supported in by the Future Power Grid Initiative funded bY
the Pacific Northwest National Laboratory (PNNL). PNNL is operated by
Battelle for the U.S. Department of Energy under Contract
DE-AC06-76RL01830.
NR 23
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705127
ER
PT S
AU Jun, M
Markel, AJ
AF Jun, Myungsoo
Markel, Anthony J.
GP IEEE
TI Simulation and Analysis of Vehicle-to-Grid Operations in Microgrid
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
AB Vehicle-to-grid (V2G) is gaining interests as means to provide reliability for power to the grid with the ability to supply power from energy storage in the vehicle. This paper presents simulation results of V2G operations in a microgrid for evaluation of reliability of the grid. It also proposes a charging and discharging control method based on the current load and battery status to relieve power load during peak hours and smooth out the load profile. Simulations are performed under both normal and "islanded" operation, i.e., disconnected from the utility grid. The results are significant in that V2G operations contribute to energy reliability on the site during emergency and cost savings in electricity bills and fuels for generators by reducing peak load.
C1 [Jun, Myungsoo; Markel, Anthony J.] Natl Renewable Energy Lab, Ctr Transportat Technol & Syst, Golden, CO 80401 USA.
RP Jun, M (reprint author), Natl Renewable Energy Lab, Ctr Transportat Technol & Syst, Golden, CO 80401 USA.
NR 8
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 5
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706101
ER
PT S
AU Kalsi, K
Elbert, S
Vlachopoulou, M
Zhou, N
Huang, ZY
AF Kalsi, Karanjit
Elbert, Stephen
Vlachopoulou, Maria
Zhou, Ning
Huang, Zhenyu
GP IEEE
TI Advanced Computational Methods for Security Constrained Financial
Transmission Rights
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Financial Transmission Rights; Linear programming; CPLEX; dynamic system
ID PROGRAMMING PROBLEMS; NEURAL-NETWORKS; AUCTION
AB Financial Transmission Rights (FTRs) are financial insurance tools to help power market participants reduce price risks associated with transmission congestion. FTRs are issued based on a process of solving a constrained optimization problem with the objective to maximize the FTR social welfare under power flow security constraints. Security constraints for different FTR categories (monthly, seasonal or annual) are usually coupled and the number of constraints increases exponentially with the number of categories. Commercial software for FTR calculation can only provide limited categories of FTRs due to the inherent computational challenges mentioned above. In this paper, first an innovative mathematical reformulation of the FTR problem is presented, which dramatically improves the computational efficiency of optimization problem. After having re-formulated the problem, a novel non-linear dynamic system (NDS) approach is proposed to solve the optimization problem. The new formulation and performance of the NDS solver is benchmarked against widely used linear programming (LP) solvers like CPLEX (TM). Tests are performed on both standard IEEE test systems and large-scale systems using data from the Western Electricity Coordinating Council (WECC). The NDS is demonstrated to be comparable, and in many cases outperforms the widely used CPLEX algorithms. The proposed formulation and NDS based solver are easily parallelizable, enabling further computational improvement.
C1 [Kalsi, Karanjit; Elbert, Stephen; Vlachopoulou, Maria; Zhou, Ning; Huang, Zhenyu] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Kalsi, K (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
RI Elbert, Stephen/F-9019-2016
OI Elbert, Stephen/0000-0003-2258-8901
NR 30
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706089
ER
PT S
AU Kalsi, K
Du, PW
Huang, ZY
AF Kalsi, Karanjit
Du, Pengwei
Huang, Zhenyu
GP IEEE
TI Model Calibration of Exciter and PSS Using Extended Kalman Filter
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Model Calibration; Extended Kalman Filter; Exciter & PSS; WECC
ID VALIDATION
AB Power system modeling and controls continue to become more complex with the advent of smart grid technologies and large-scale deployment of renewable energy resources. As demonstrated in recent studies, inaccurate system models could lead to large-scale blackouts, thereby motivating the need for model calibration. Current methods of model calibration rely on manual tuning based on engineering experience, are time consuming, and could yield inaccurate parameter estimates. In this paper, the Extended Kalman Filter (EKF) is used as a tool to calibrate exciter and power system stabilizer (PSS) models of a particular type of machine in the Western Electricity Coordinating Council (WECC). The EKF-based parameter estimation is a recursive prediction-correction process, which uses the mismatch between simulation and measurement to adjust the model parameters at every time step. Numerical simulations using actual field test data demonstrate the effectiveness of the proposed approach in calibrating the parameters.
C1 [Kalsi, Karanjit; Du, Pengwei; Huang, Zhenyu] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Kalsi, K (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
NR 16
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706072
ER
PT S
AU Lentine, AL
Ford, JR
Finn, JR
Furrer, CT
Bryan, JR
Gonzalez, S
Spires, SV
Goldsmith, SY
AF Lentine, Anthony L.
Ford, Justin R.
Finn, Jason R.
Furrer, Clint T., III
Bryan, Jon R.
Gonzalez, Sigifredo
Spires, Shannon V.
Goldsmith, Steven Y.
GP IEEE
TI An intelligent electrical outlet for autonomous load control for
electric power grids with a large percentage of renewable resources
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Smart grids; Load management; Intelligent actuators; Intelligent
systems; Cooperative systems; Smart homes; Green buildings
AB We describe an experimental intelligent electrical outlet that is capable of autonomously controlling loads in a smart grid or micro-grid environment without a centralized computer. The outlet comprises four receptacles, each with voltage sensing, current sensing, actuation, a CPU for implementing closed loop control, and an Ethernet bridge for communicating with other outlets and for transmitting data to a collection PC. The outlet can measure the direction of power flow, and the real and reactive components to power. We demonstrate multiple outlets adapting the collective load to the available supply from one and two photovoltaic inverter sources, responding to changes in similar to 100ms intervals.
C1 [Lentine, Anthony L.; Ford, Justin R.; Finn, Jason R.; Furrer, Clint T., III; Bryan, Jon R.; Gonzalez, Sigifredo; Spires, Shannon V.; Goldsmith, Steven Y.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Lentine, AL (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM alentine@sandia.gov
NR 4
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705109
ER
PT S
AU Lew, D
Brinkman, G
Kumar, N
Besuner, P
Agan, D
Lefton, S
AF Lew, D.
Brinkman, G.
Kumar, N.
Besuner, P.
Agan, D.
Lefton, S.
GP IEEE
TI Impacts of Wind and Solar on Emissions and Wear and Tear of
Fossil-Fueled Generators
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE carbon dioxide; coal; cycling; emissions; gas; load following; nitrogen
oxide; ramping; solar; sulfur dioxide; wear and tear; wind
ID POWER
AB High penetrations of wind and solar power will impact the operations of the conventional generators on the power system. Regional integration studies have shown that wind and solar may cause fossil-fueled generators to cycle on and off and load follow more frequently and potentially more rapidly. Increased cycling, deeper load following, and rapid ramping may result in wear and tear impacts on fossil-fueled generators that lead to increased capital and maintenance costs, increased equivalent forced outage rates, and degraded performance over time. Heat rates and emissions from fossil-fueled generators may be higher during cycling and ramping than during steady-state operation. Many wind and solar integration studies have not taken these increased cost and emissions impacts into account because data have not been available. This analysis considers the cost and emissions impacts of cycling and ramping of fossil-fueled generation to refine assessments of wind and solar impacts on the power system.
C1 [Lew, D.; Brinkman, G.] Natl Renewable Energy Lab, Transmiss & Grid Integrat Grp, Golden, CO 80401 USA.
[Kumar, N.; Besuner, P.; Agan, D.; Lefton, S.] Intertek APTECH, Sunnyvale, CA 94086 USA.
RP Lew, D (reprint author), Natl Renewable Energy Lab, Transmiss & Grid Integrat Grp, Golden, CO 80401 USA.
EM debra.lew@nrel.gov; greg.brinkman@nrel.gov; nikhil.kumar@intertek.com;
nadreckl2@yahoo.com; dwight.agan@intertek.com; steve.lefton@intertek.com
FU U. S. Department of Energy's Office of Energy Efficiency
FX This work was supported in part by the U. S. Department of Energy's
Office of Energy Efficiency and Renewable Energy's wind and solar
programs and the Office of Electricity.
NR 11
TC 0
Z9 0
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700046
ER
PT S
AU Li, HJ
Xu, Y
Adhikari, S
Rizy, DT
Li, FX
Irminger, P
AF Li, Huijuan
Xu, Yan
Adhikari, Sarina
Rizy, D. Tom
Li, Fangxing
Irminger, Philip
GP IEEE
TI Real and Reactive Power Control of a Three-Phase Single-Stage PV System
and PV Voltage Stability
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE photovoltaic (PV) systems; maximum power point tracking (MPPT); DC
voltage stability; distributed energy resources; single-stage PV
inverter; smart inverter control; real power control; voltage control;
reactive power; microgrid; smart grid
ID POINT TRACKING; SIMULATION
AB Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.
C1 [Li, Huijuan] Oak Ridge Natl Lab, ORAU, Postdoctoral Res Associates Program, Oak Ridge, TN 37831 USA.
[Xu, Yan; Rizy, D. Tom] Power & Energy Syst Grp OGNL, Oak Ridge, TN USA.
[Adhikari, Sarina; Li, Fangxing] Univ Tennessee, Knoxville, TN USA.
RP Li, HJ (reprint author), Oak Ridge Natl Lab, ORAU, Postdoctoral Res Associates Program, Oak Ridge, TN 37831 USA.
EM lih3@ornl.gov
RI Li, Fangxing/E-6023-2013
OI Li, Fangxing/0000-0003-1060-7618
FU UT- Battelle; LLC [DE- AC05- 00OR22725]; U. S. Department of Energy
FX This manuscript has been authored by UT- Battelle, LLC, under Contract
No. DE- AC05- 00OR22725 with the U. S. Department of Energy. The United
States Government retains and the publisher, by accepting the article
for publication, acknowledges that the United States Government retains
a nonexclusive, paid- up, irrevocable, world- wide license to publish or
reproduce the published form of this manuscript, or allow others to do
so, for United States Government purposes.
NR 10
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700044
ER
PT S
AU Lu, N
Du, PW
Greitzer, FL
Guo, XX
Hohimer, RE
Pomiak, YG
AF Lu, Ning
Du, Pengwei
Greitzer, Frank L.
Guo, Xinxin
Hohimer, Ryan E.
Pomiak, Yekaterina G.
GP IEEE
TI A Multi-layer, Data-driven Advanced Reasoning Tool for Intelligent Data
Mining and Analysis for Smart Grids
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE advanced metering infrastructure; data-driven models; data mining;
distribution; energy management systems; information management; meter
data management; smart grid; smart alarm; smart meter
AB This paper presents the multi-layer, data-driven advanced reasoning tool (M-DART), a proof-of-principle decision support tool for improved power system operation. M-DART will cross-correlate and examine different data sources to assess anomalies, infer root causes, and anneal data into actionable information. By performing higher-level reasoning "triage" of diverse data sources, M-DART focuses on early detection of emerging power system events and identifies highest priority actions for the human decision maker. M-DART represents a significant advancement over today's grid monitoring technologies that apply offline analyses to derive model-based guidelines for online real-time operations and use isolated data processing mechanisms focusing on individual data domains. The development of the M-DART will bridge these gaps by reasoning about results obtained from multiple data sources that are enabled by the smart grid infrastructure. This hybrid approach integrates a knowledge base that is trained offline but tuned online to capture model-based relationships while revealing complex causal relationships among data from different domains.
C1 [Lu, Ning; Du, Pengwei; Greitzer, Frank L.; Guo, Xinxin; Hohimer, Ryan E.; Pomiak, Yekaterina G.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Lu, N (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM ning.lu@pnnl.gov; Pengwei.du@pnnl.gov; frank.greitzaer@pnnl.gov;
xinxin.guo@pnnl.gov; Ryan.Hohimer@pnnl.gov; Yekaterina.Pomiak@pnnl.gov
NR 21
TC 0
Z9 0
U1 1
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493704028
ER
PT S
AU Lu, N
Du, PW
Makarov, YV
AF Lu, Ning
Du, Pengwei
Makarov, Yuri V.
GP IEEE
TI The Potential of Thermostatically Controlled Appliances for Intra-hour
Energy Storage Applications
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE demand response; direct load control; air conditioning; water heater;
thermostatically controlled appliances; regulation service; load
following; ancillary service; wind integration
ID LOAD CONTROL; SYSTEM
AB This paper investigates the potential of providing a variety of energy storage services by directly control the thermostatically controlled appliances (TCAs) from a centralized controller. Dispatch algorithms for the controller to arrange the turn-on and turn-off time and duration of individual TCAs are presented. The control goal is to operate each TCA within the customer-desired temperature range and maintain the TCA load diversity, and make the aggregated TCA load at the target load level. Methods to minimize the communication needs by reducing the monitoring and control data flows between the central controller and the end devices are also discussed. A thousand space heating units are modeled to demonstrate the control algorithms to provide load shifting and load balancing services for a period of 24 hours. The results demonstrate that the energy and ancillary services provided by the TCA loads meet the performance requirements and can become a major source of revenue for load-serving entities where the two-way communication smart grid infrastructure enables direct load control over the TCA loads.
C1 [Lu, Ning] Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA.
RP Lu, N (reprint author), Pacific NW Natl Lab, Energy & Environm Directorate, Richland, WA 99352 USA.
EM ning.lu@pnnl.gov; Pengwei.du@pnnl.gov; yuri.makarov@pnnl.gov
NR 17
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493703097
ER
PT S
AU Ma, J
Lu, S
Etingov, PV
Makarov, YV
AF Ma, Jian
Lu, Shuai
Etingov, Pavel V.
Makarov, Yuri V.
GP IEEE
TI Evaluating the Impact of Solar Generation on Balancing Requirements in
Southern Nevada System
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Ancillary services; balancing requirements; load following; regulation;
renewables integration; swinging door algorithm
AB In this paper, the impacts of solar photovoltaic (PV) generation on balancing requirements including regulation and load following in the Southern Nevada balancing area are analyzed. The methodology is based on the "swinging door" algorithm and a probability box method developed by PNNL. The regulation and load following signals are mimicking the system's scheduling and real-time dispatch processes. Load, solar PV generation and distributed PV generation (DG) data are used in the simulation. Different levels of solar PV generation and DG penetration profiles are used in the study. Sensitivity of the regulation requirements with respect to real-time solar PV generation forecast errors is analyzed.
C1 [Ma, Jian; Lu, Shuai; Etingov, Pavel V.; Makarov, Yuri V.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Ma, J (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM jian.ma@pnnl.gov; shuai.lu@pnnl.gov; pavel.etingov@pnnl.gov;
yuri.makarov@pnnl.gov
NR 12
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493700093
ER
PT S
AU Makarov, YV
Etingov, PV
Samaan, NA
Lu, N
Ma, J
Subbarao, K
Du, PW
Kannberg, LD
AF Makarov, Yuri V.
Etingov, Pavel V.
Samaan, Nader A.
Lu, Ning
Ma, Jian
Subbarao, Krishnappa
Du, Pengwei
Kannberg, Landis D.
GP IEEE
TI Improving Performance of Power Systems with Large-scale Variable
Generation Additions
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Variable generation; flexibility; operating reserves; and balancing
process
ID UNIT COMMITMENT; WIND POWER
AB A power system with large-scale renewable resources, like wind and solar generation, creates significant challenges to system control performance and reliability characteristics because of intermittency and uncertainties associated with variable generation. It is important to quantify these uncertainties, and then incorporate this information into decision-making processes and power system operations. This paper presents three approaches to evaluate the flexibility needed from conventional generators and other resources in the presence of variable generation as well as provide this flexibility from a non-traditional resource - wide area energy storage system. These approaches provide operators with much-needed information on the likelihood and magnitude of ramping and capacity problems, and the ability to dispatch available resources in response to such problems.
C1 [Makarov, Yuri V.; Etingov, Pavel V.; Samaan, Nader A.; Lu, Ning; Ma, Jian; Subbarao, Krishnappa; Du, Pengwei; Kannberg, Landis D.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Makarov, YV (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA.
EM yuri.makarov@pnnl.gov
NR 23
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705101
ER
PT S
AU Marnay, C
DeForest, N
Lai, J
AF Marnay, Chris
DeForest, Nicholas
Lai, Judy
GP IEEE
TI A Green Prison: The Santa Rita Jail Campus Microgrid
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE buildings; cogeneration; dispersed storage and generation; microgrids;
PV; fuel cells; power quality; power system economics; energy efficiency
C1 [Marnay, Chris] Berkeley Lab, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Marnay, C (reprint author), Berkeley Lab, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM C_Marnay@LBL.gov; NDeForest@LBL.gov; JLai@LBL.gov
NR 0
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 2
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493704081
ER
PT S
AU Mather, BA
AF Mather, Barry A.
GP IEEE
TI Quasi-Static Time-Series Test Feeder for PV Integration Analysis on
Distribution Systems
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE 34 node test feeder; quasi-static time-series analysis; power flow;
voltage regulator operation simulation; PV integration; distribution
system impacts
AB This paper presents a quasi-static time-series test feeder based on the well-known 34 node test feeder [1]. This test feeder is useful for the evaluation and quantification the distribution system impacts of distributed PV integrations. The load profiles and solar resource profiles used are both publically available. The quasi-static time-series test feeder has been developed using data for the year 2010. The fixed time period between power flow solutions is 1 min making the presented quasi-static time-series test feeder appropriate for use in investigating voltage regulation device operations. A load allocation algorithm is also proposed for assigning spot and distributed loads in the 34 node test feeder to time varying load profiles based on rate class load profiles. A simple model for modeling the real AC power output of a PV system based on discrete global horizontal irradiance (GHI) is also presented. The results of analysis completed using the quasi-static time-series test feeder are shown for various single-site 1MW PV deployment scenarios and voltage regulator compensation settings.
C1 Natl Renewable Energy Lab, Distributed Energy Syst Integrat DESI Grp, Golden, CO 80401 USA.
RP Mather, BA (reprint author), Natl Renewable Energy Lab, Distributed Energy Syst Integrat DESI Grp, Golden, CO 80401 USA.
EM barry.mather@nrel.gov
NR 11
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705086
ER
PT S
AU Mattix, SR
Donnelly, MK
Trudnowski, DJ
Dagle, JE
AF Mattix, Shea R.
Donnelly, Matthew K.
Trudnowski, Daniel J.
Dagle, Jeffrey E.
GP IEEE
TI Autonomous Demand Response for Frequency Regulation on a Large-Scale
Model of an Interconnected Grid
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Power system control; smart grids; load management; power system
dynamics; power system planning
AB This research examines the use of autonomous demand response to provide primary frequency control in an interconnected grid. The work builds on previous studies in several key areas: it uses a large realistic model; it establishes a set of metrics which can be used to assess the effectiveness of autonomous demand response; and it independently adjusts various parameters associated with using autonomous demand response to assess effectiveness and to examine possible threats or vulnerabilities associated with the technology. More than 6,000 simulations of the power system model were conducted during the course of the study. The studies demonstrated that very few conditions associated with autonomous demand response have the potential to degrade reliability, and that the marginal benefit attributable to autonomous demand response is quantifiable and can be used to determine the value of the technology, as compared to traditional means, for providing primary frequency control.
C1 [Mattix, Shea R.; Donnelly, Matthew K.; Trudnowski, Daniel J.] Univ Montana, Montana Tech, Dept Elect Engn, Butte, MT 59701 USA.
[Dagle, Jeffrey E.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Mattix, SR (reprint author), Univ Montana, Montana Tech, Dept Elect Engn, Butte, MT 59701 USA.
EM srmattix@mtech.edu
NR 25
TC 0
Z9 0
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 8
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493702122
ER
PT S
AU Meng, D
Zhou, N
Lu, S
Lin, G
AF Meng, Da
Zhou, Ning
Lu, Shuai
Lin, Guang
GP IEEE
TI Estimate the Electromechanical States Using Particle Filtering and
Smoothing
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Auxiliary Particle Filter; Importance Sampling; Non-Gaussian State Space
Model; Particle Filtering; Particle Smoothing; Sequential Monte Carlo
Methods; State Estimation
ID POWER-SYSTEMS
AB Accurate knowledge of electromechanical states is critical for efficient and reliable control of a power system. This paper proposes a particle filtering approach to estimate the electromechanical states of power systems from Phasor Measurement Unit (PMU) data. Without having to go through a laborious linearization procedure, the proposed particle filtering techniques can estimate states of a complex power system, which is often non-linear and has non-Gaussian noise. The proposed method is evaluated using a multi-machine system and its responses. Sensitivity studies of the dynamic state estimation performance are also presented to show the robustness of the proposed method. A promising path forward for the application of the proposed method is to reduce computational time through efficient parallel implementation owing to the inherent decoupling properties of particle filtering.
C1 [Meng, Da; Zhou, Ning; Lu, Shuai; Lin, Guang] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Meng, D (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM da.meng@pnnl.gov; ning.zhou@pnnl.gov; Shuai.lu@pnnl.gov;
guang.lin@pnnl.gov
NR 16
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705111
ER
PT S
AU Milligan, M
Holttinen, H
Soder, L
Clark, C
AF Milligan, Michael
Holttinen, Hannele
Soder, Lennart
Clark, Charlton
GP IEEE
TI Market Structures to Enable Efficient Wind and Solar Power Integration
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Wind energy; solar energy; electricity markets; wind integration; solar
integration
AB The development of large amounts of wind and/or solar energy will have an impact on bulk electricity markets. These variable generation sources increase the level of variability and uncertainty that the power system operator must manage. In this paper we discuss the impact that electricity markets have on the wind producer, using examples from the Nordic system. We also describe two market structures that will help induce both the needed flexibility, whether from generation or load, and sufficient capacity. We also provide some general guidelines for market design and simple tests that can help identify how a proposed market would function. We close with suggestions for future research.
C1 [Milligan, Michael] Natl Renewable Energy Lab, Transmiss & Grid Integrat Grp, Golden, CO USA.
RP Milligan, M (reprint author), Natl Renewable Energy Lab, Transmiss & Grid Integrat Grp, Golden, CO USA.
NR 22
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706103
ER
PT S
AU Milligan, M
AF Milligan, Michael
GP IEEE
TI Market Implications of High Levels of Wind and Solar Generation
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Wind energy; solar energy; electricity markets; wind integration; solar
integration
AB Large amounts of wind and/or solar energy will have an impact on bulk electricity markets. This panel presentation will provide insight to how scheduling and dispatch rules can help to efficiently integrate wind and solar generation. Possible proxies for wind and solar capacity values that may be useful in capacity markets are also discussed.
C1 [Milligan, Michael] Natl Renewable Energy Lab, Golden, CO USA.
RP Milligan, M (reprint author), Natl Renewable Energy Lab, Golden, CO USA.
NR 0
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 1
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705126
ER
PT S
AU Stamp, J
Stinebaugh, J
AF Stamp, Jason
Stinebaugh, Jennifer
GP IEEE
TI Microgrid Modeling to Support the Design Processes
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
C1 [Stamp, Jason; Stinebaugh, Jennifer] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Stamp, J (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM jestamp@sandia.gov
NR 0
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 1
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493706033
ER
PT S
AU Wang, SB
Lu, S
Lin, G
Zhou, N
AF Wang, Shaobu
Lu, Shuai
Lin, Guang
Zhou, Ning
GP IEEE
TI Measurement-based Coherency Identification and Aggregation for Power
Systems
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE Power systems; Coherency identification; Generator aggregation; Model
reduction; Phasor measurement unit; Sensitivity analysis
ID TRANSIENT STABILITY SIMULATIONS; PRINCIPAL COMPONENT ANALYSIS;
MODEL-REDUCTION; ALGORITHMS; NETWORK
AB Model reduction techniques are often applied to large-scale complex power systems to increase simulation performance. The bottleneck of existing methods to get a high reduction ratio lies in: (1) Coherency identification is static and conservative. Some coherent generators are not detected when system topology or operating point changes. (2)Solitary generators outside any coherency group are not aggregated regardless of their importance. To overcome the first problem, a measurement-based online coherency identification method was used in this paper. By analyzing post-fault trajectories measured by phasor measurement units (PMUs), coherency generators were identified through principal component analysis. The method can track conherency groups with time-varying system topology and operating points. To address the second problem, sensitivity analysis was employed into model reduction in this paper. The sensitivity of tie-line power flows against injected active power of external system generators was derived. Those generators having minimal impacts on tie-line power flows were replaced with negative impedances. Case studies show that the proposed method can handle well these solitary generators and the reduction ratio can be enhanced. Future work will include generalization of the sensitivity method.
C1 [Wang, Shaobu; Lu, Shuai; Lin, Guang; Zhou, Ning] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Wang, SB (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM shaobu.wang@pnnl.gov; shuai.lu@pnnl.gov; guang.lin@pnnl.gov;
ning.zhou@pnnl.gov
NR 26
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 7
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493705079
ER
PT S
AU Widergren, S
Marinovici, C
Berliner, T
Graves, A
AF Widergren, S., Sr.
Marinovici, C.
Berliner, T.
Graves, A.
GP IEEE
TI Real-time Pricing Demand Response in Operations
SO 2012 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING
SE IEEE Power and Energy Society General Meeting PESGM
LA English
DT Proceedings Paper
CT General Meeting of the IEEE-Power-and-Energy-Society
CY JUL 22-26, 2012
CL San Diego, CA
SP IEEE Power & Energy Soc
DE dynamic pricing; power system modeling; agent-based system; market
simulation
AB Dynamic pricing schemes have been implemented in commercial and industrial application settings, and recently they are getting attention for application to residential customers. Time-of-use and critical-peak-pricing rates are in place in various regions and are being piloted in many more. These programs are proving themselves useful for balancing energy during peak periods; however, real-time (5 minute) pricing signals combined with automation in end-use systems have the potential to deliver even more benefits to operators and consumers. Besides system peak shaving, a real-time pricing system can contribute demand response based on the locational marginal price of electricity, reduce load in response to a generator outage, and respond to local distribution system capacity limiting situations. The US Department of Energy (DOE) is teaming with a mid-west electricity service provider to run a distribution feeder-based retail electricity market that negotiates with residential automation equipment and clears every 5 minutes, thus providing a signal for lowering or raising electric consumption based on operational objectives of economic efficiency and reliability. This paper outlines the capability of the real-time pricing system and the operational scenarios being tested as the system is rolled-out starting in the first half of 2012.
C1 [Widergren, S., Sr.; Marinovici, C.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Widergren, S (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM steve.widergren@pnnl.gov; cristina.marinovici@pnnl.gov;
ttberliner@aep.com; argraves@aep.com
NR 5
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1944-9925
BN 978-1-4673-2729-9
J9 IEEE POW ENER SOC GE
PY 2012
PG 5
WC Engineering, Electrical & Electronic
SC Engineering
GA BDB70
UT WOS:000312493704043
ER
PT J
AU Plaza, GA
Krol, E
Pacwa-Plociniczak, M
Piotrowska-Seget, Z
Brigmon, LR
AF Plaza, Grazyna A.
Krol, Ewa
Pacwa-Plociniczak, Magdalena
Piotrowska-Seget, Zofia
Brigmon, L. Robin
TI STUDY OF ANTIFUNGAL ACTIVITY OF Bacilli SPECIES CULTURED ON
AGRO-INDUSTRIAL WASTES
SO ACTA SCIENTIARUM POLONORUM-HORTORUM CULTUS
LA English
DT Article
DE Bacillus spp.; Phytopathogenic fungi; Agro-industrial wastes;
Biosurfactants
ID BIOLOGICAL-CONTROL; BOTRYTIS-CINEREA; PLANT-DISEASE; IN-VITRO; SUBTILIS;
IDENTIFICATION; LIPOPEPTIDES; BIOCONTROL; FUNGI; AMYLOLIQUEFACIENS
AB The three Bacillus species isolated from petroleum refinery waste were examined for antifungal activity on brewery effluents and molasses for biotechnological applications. Bacillus strains were identified by three different methods: 16S rRNA gene sequences, BIOLOG system and fatty acid analysis (FAME). The results demonstrated the ability of all three Bacillus strains cultured on brewery effluents and molasses to inhibit mycelial growth of the 10 tested fungi to varying degrees measured by agar plate inhibition assays. Fungi inhibited to the greatest degree as measured by the zones of inhibition were Botrytis cinerea A 258, Phomopsis viticola W 977, Septoria carvi K 2082, Colletotrichum gloeosporioides A 259, Phoma complanata A 233 and Phoma exigua var. exigua A 175. It was also observed that the fungal mycelial growth was inhibited by the cell-free supernatants, indicating lipoprotein-like activity of antifungal agents (mainly biosurfactants). Tested fungi were most sensitive to the Bacilli supernatants obtained from the molasses cultures including: B. cinerea A 258, R. solani W 70, S. sclerotiorum K 2291, Phomopsis diachenii K 657, C. dematium K 425, P. complanata A 233, P. exigua var. exigua A 175. In the previous study it was shown that Bacillus species produced biosurfactants. Application of natural products such as these Bacillus species or their byproducts may be a new approach to phytopathogen control therefore reducing the need for fungicides.
C1 [Plaza, Grazyna A.] Inst Ecol Ind Areas, Dept Environm Microbiol, PL-40844 Katowice, Poland.
[Plaza, Grazyna A.] Silesian Tech Univ, Zabrze, Poland.
[Krol, Ewa] Univ Life Sci Lublin, Lublin, Poland.
[Pacwa-Plociniczak, Magdalena; Piotrowska-Seget, Zofia] Univ Silesia, Katowice, Poland.
[Brigmon, L. Robin] Savannah River Natl Lab, Aiken, SC USA.
RP Plaza, GA (reprint author), Inst Ecol Ind Areas, Dept Environm Microbiol, PL-40844 Katowice, Poland.
EM pla@ietu.katowice.pl
FU Polish Ministry of Science and Higher Education [N N523 418237]; U.S.
Department of Energy [DE-AC09-08SR22470]
FX This work was done under the project No N N523 418237 from the Polish
Ministry of Science and Higher Education. This document was prepared in
conjunction with work accomplished under Contract No. DE-AC09-08SR22470
with the U.S. Department of Energy.
NR 36
TC 0
Z9 0
U1 4
U2 17
PU WYDAWNICTWO AKAD ROLNICZEJ W LUBLINIE
PI LUBLIN
PA UL AKADEMICKA 13, LUBLIN, 20-950, POLAND
SN 1644-0692
J9 ACTA SCI POL-HORTORU
JI Acta Sci. Pol.-Hortorum Cultus
PY 2012
VL 11
IS 5
BP 169
EP 182
PG 14
WC Horticulture
SC Agriculture
GA 062RG
UT WOS:000312938400014
ER
PT S
AU Ammons, SM
Poyneer, L
Gavel, DT
Kupke, R
Max, CE
Johnson, L
AF Ammons, S. Mark
Poyneer, Lisa
Gavel, Donald T.
Kupke, Renate
Max, Claire E.
Johnson, Luke
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Evidence that wind prediction with multiple guide stars reduces
tomographic errors and expands MOAO field of regard
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE adaptive optics; predictive control; laser guide star; tomography; MCAO;
MOAO; LTAO; GLAO; LQG; Kalman
ID MULTICONJUGATE ADAPTIVE OPTICS
AB We explore the extension of predictive control techniques to multi-guide star, multi-layer tomographic wavefront measurement systems using a shift-and-average correction scheme that incorporates wind velocity and direction. In addition to reducing temporal error budget terms, there are potentially additional benefits for tomographic AO systems; the combination of wind velocity information and phase height information from multiple guide stars breaks inherent degeneracies in volumetric tomographic reconstruction, producing a reduction in the geometric tomographic error. In a tomographic simulation of an 8-meter telescope with 3 laser guide stars over 2 arcminute diameter, we find that tracking organized wind motion as it flows into metapupil regions sampled by only one guide star improves layer estimates beyond the guide star radius, allowing for an expansion of the field of view. For this case, we demonstrate improvement of layer phase estimates of 3% to 12%, translating into potential gains in the MOAO field of regard area of up to 40%. The majority of the benefits occur in regions of the metapupil sampled by only 1-2 LGS's downwind at high altitudes.
C1 [Ammons, S. Mark; Poyneer, Lisa] Lawrence Livermore Natl Lab, Div Phys, L-210,7000 East Ave, Livermore, CA 94550 USA.
[Gavel, Donald T.; Kupke, Renate; Max, Claire E.] Univ Calif Santa Cruz, UCO Lick Observ, Santa Cruz, CA 95064 USA.
[Johnson, Luke] Natl Solar Observ, Tucson, AZ 85719 USA.
RP Ammons, SM (reprint author), Lawrence Livermore Natl Lab, Div Phys, L-210,7000 East Ave, Livermore, CA 94550 USA.
EM ammons1@llnl.gov
OI Max, Claire/0000-0003-0682-5436
NR 17
TC 3
Z9 3
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 84471U
DI 10.1117/12.927283
PG 9
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300058
ER
PT S
AU Ammons, SM
Bendek, EA
Guyonb, O
Macintosh, B
Savransky, D
AF Ammons, S. Mark
Bendek, Eduardo A.
Guyonb, Olivier
Macintosh, Bruce
Savransky, Dmitry
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Theoretical Limits on Bright Star Astrometry with Multi-Conjugate
Adaptive Optics using a Diffractive Pupil
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE astrometry; diffractive pupil; microarcsecond; SIM; PECO; differential
atmospheric refraction; extrasolar planet; exoearth; differential
tip/tilt jitter; MCAO; adaptive optics
ID PRECISION ASTROMETRY; GALACTIC-CENTER; TELESCOPE; DISTORTION
AB We present a ground-based technique to detect or follow-up long-period exoplanets via precise relative astrometry of host stars using Multi-Conjugate Adaptive Optics (MCAO) on 8 meter telescopes equipped with diffractive masks. MCAO improves relative astrometry by sharpening PSFs, reducing the star centroiding error, and by providing a spatially stable, more easily modeled PSF. However, exoplanet mass determination requires multi-year reference grid stability of similar to 10-100 uas or nanometer-level stability on the long-term average of out-of-pupil phase errors, which is difficult to achieve with MCAO. The diffractive pupil technique calibrates dynamic distortion via extended diffraction spikes generated by a dotted primary mirror, which are referenced against a grid of background stars. We calculate the astrometic performance of a diffractive 8-meter telescope with diffraction-limited MCAO in K using analytical techniques and a simplified MCAO simulation. Referencing the stellar grid to the diffraction spikes negates the cancellation of Differential Tip/ Tilt Jitter normally achieved with MCAO. However, due to the substantial gains associated with sharper, more stable PSFs, diffractive 8-m MCAO reaches similar to 4-6 mu as relative astrometric error per coordinate in one hour on a bright target star (K similar to 7) in fields of moderate stellar density (similar to 10 stars arcmin(-2)). Final relative astrometric precision with MCAO is limited by atmospheric differential tip/tilt jitter.
C1 [Ammons, S. Mark; Macintosh, Bruce; Savransky, Dmitry] Lawrence Livermore Natl Lab, Div Phys, L-210,7000 East Ave, Livermore, CA 94550 USA.
[Bendek, Eduardo A.; Guyonb, Olivier] Univ Arizona, Steward Observ, Tucson, AZ 95060 USA.
[Guyonb, Olivier] Subaru Telescope, Hilo, HI USA.
RP Ammons, SM (reprint author), Lawrence Livermore Natl Lab, Div Phys, L-210,7000 East Ave, Livermore, CA 94550 USA.
EM ammons1@llnl.gov
RI Savransky, Dmitry/M-1298-2014
OI Savransky, Dmitry/0000-0002-8711-7206
FU NASA APRA program; Fulbright Science and Technology program; LLNL
Lawrence Fellow program; U. S. Department of Energy by Lawrence
Livermore National Laboratory [DEAC52- 07NA27344, LLNL- PROC- 565933]
FX Thanks to Matthew Britton, Jessica Lu, Ruslan Belikov, Quinn Konopacky,
Brent Ellerbroek, Michael Hart, Luc Gilles, Matthias Schoeck, and
Michael Shao for contributions and helpful discussions. Brent Ellerbroek
and Matthias Schoeck are recognized for running simulations that
inspired the MCAO simulations we publish in Section 2. We recognize
support from the NASA APRA program. E. A. B. acknowledges support from
the Fulbright Science and Technology program. S. M. A. acknowledges
research support from the LLNL Lawrence Fellow program. This work
performed under the auspices of the U. S. Department of Energy by
Lawrence Livermore National Laboratory under Contract DEAC52- 07NA27344
with document release number LLNL- PROC- 565933.
NR 28
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 84470P
DI 10.1117/12.927281
PG 9
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300022
ER
PT S
AU Hart, M
Codona, J
Codona, R
Ammons, SM
Macintosh, BA
McCarville, T
Pardini, T
Pivovaroff, M
Poyneer, L
AF Hart, Michael
Codona, Johanan
Codona, Robert
Ammons, S. Mark
Macintosh, Bruce A.
McCarville, Thomas
Pardini, Tommaso
Pivovaroff, Michael
Poyneer, Lisa
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Conceptual design for a deformable mirror for use with X-ray sources
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Adaptive optics; deformable mirrors; X-ray optics
AB High-energy beams of X-rays used in studies of molecular structure typically have imperfect wavefront quality. Improved point-spread functions can in principle be made by adjustment of a deformable mirror (DM) in the beam train. Conventional DMs are unsuitable because they are not intended for use at the necessary grazing incidence angles, and the optical surface is not sufficiently stable. We describe the conceptual design for a new DM that addresses the requirements of this application. Our design draws on successful strategies employed in the adaptive secondary mirrors at the MMT and LBT telescopes, including the use of voice-coil actuators with collocated capacitive position sensors.
C1 [Hart, Michael; Codona, Johanan; Codona, Robert] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
[Ammons, S. Mark; Macintosh, Bruce A.; McCarville, Thomas; Pardini, Tommaso; Pivovaroff, Michael; Poyneer, Lisa] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hart, M (reprint author), Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU U. S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52- 07NA27344]; LLNL LDRD office [11-ERD-015]; Lawrence Livermore
National Security [B597543]
FX This work was performed under the auspices of the U. S. Department of
Energy by Lawrence Livermore National Laboratory under Contract DE-
AC52- 07NA27344. This project was enabled by the LLNL LDRD office
through program 11-ERD-015. Work at the University of Arizona was
supported by Lawrence Livermore National Security under contract
B597543.
NR 8
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 844766
DI 10.1117/12.927233
PG 11
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300195
ER
PT S
AU Lawson, PR
Poyneer, L
Barrett, H
Frazin, R
Caucci, L
Devaney, N
Furenlid, L
Gladysz, S
Guyon, O
Krist, J
Maire, J
Marois, C
Mawet, D
Mouillet, D
Mugnier, L
Pearson, I
Perrin, M
Pueyo, L
Savransky, D
AF Lawson, Peter R.
Poyneer, Lisa
Barrett, Harrison
Frazin, Richard
Caucci, Luca
Devaney, Nicholas
Furenlid, Lars
Gladysz, Szymon
Guyon, Olivier
Krist, John
Maire, Jerome
Marois, Christian
Mawet, Dimitri
Mouillet, David
Mugnier, Laurent
Pearson, Iain
Perrin, Marshall
Pueyo, Laurent
Savransky, Dmitry
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI On Advanced Estimation Techniques for Exoplanet Detection and
Characterization Using Ground-based Coronagraphs
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Exoplanets; coronagraphs; adaptive optics; instrumentation; theory
ID INTEGRAL FIELD SPECTROGRAPH; HR 8799; ADAPTIVE OPTICS; IMAGE; STAR;
SUBTRACTION
AB The direct imaging of planets around nearby stars is exceedingly difficult. Only about 14 exoplanets have been imaged to date that have masses less than 13 times that of Jupiter. The next generation of planet-finding coronagraphs, including VLT-SPHERE, the Gemini Planet Imager, Palomar P1640, and Subaru HiCIAO have predicted contrast performance of roughly a thousand times less than would be needed to detect Earth-like planets. In this paper we review the state of the art in exoplanet imaging, most notably the method of Locally Optimized Combination of Images (LOCI), and we investigate the potential of improving the detectability of faint exoplanets through the use of advanced statistical methods based on the concepts of the ideal observer and the Hotelling observer. We propose a formal comparison of techniques using a blind data challenge with an evaluation of performance using the Receiver Operating Characteristic (ROC) and Localization ROC (LROC) curves. We place particular emphasis on the understanding and modeling of realistic sources of measurement noise in ground-based AO-corrected coronagraphs. The work reported in this paper is the result of interactions between the co-authors during a week-long workshop on exoplanet imaging that was held in Squaw Valley, California, in March of 2012.
C1 [Lawson, Peter R.; Krist, John] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
[Poyneer, Lisa; Savransky, Dmitry] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Barrett, Harrison; Caucci, Luca; Furenlid, Lars; Pearson, Iain] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA.
[Frazin, Richard] Univ Michigan, Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Devaney, Nicholas] Natl Univ Ireland, Sch Phys, Appl Opt Grp, Galway, Ireland.
[Gladysz, Szymon] Fraunhofer Inst, D-76275 Ettlingen, Germany.
[Guyon, Olivier] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Guyon, Olivier] Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA.
[Maire, Jerome] Univ Toronto, David Dunlap Inst, Toronto, ON M5S 3H4, Canada.
[Mawet, Dimitri] NRC, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada.
[Mouillet, David] European Southern Observ, Casilla 19001, Chile.
[Mugnier, Laurent] IPAG, F-38041 Grenoble, France.
[Mugnier, Laurent] Off Natl Etud & Rech Aerosp, Div Optique Theor & Appliquee, F-92322 Chatillon, France.
[Perrin, Marshall] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Pueyo, Laurent] JHU, Dept Phys & Astron, Baltimore, MD 21218 USA.
RP Lawson, PR (reprint author), CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA.
EM Peter.R.Lawson@jpl.nasa.gov
RI Frazin, Richard/J-2625-2012; Savransky, Dmitry/M-1298-2014; Mugnier,
Laurent/A-7630-2012;
OI Savransky, Dmitry/0000-0002-8711-7206; Mugnier,
Laurent/0000-0002-8364-4957
FU National Academies Keck Futures Initiative; National Institutes of
Health [2R01EB000803-21]
FX This work was undertaken with support of a seed grant from the National
Academies Keck Futures Initiative. Work at the University of Arizona was
supported in part by the National Institutes of Health under grant no.
2R01EB000803-21.
NR 29
TC 4
Z9 4
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 844722
DI 10.1117/12.925099
PG 21
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300065
ER
PT S
AU Maire, J
Gagne, J
Lafreniere, D
Doyon, R
Graham, JR
Veran, JP
Poyneer, LA
AF Maire, Jerome
Gagne, Jonathan
Lafreniere, David
Doyon, Rene
Graham, James R.
Veran, Jean-Pierre
Poyneer, Lisa A.
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Preserving the photometric integrity of companions in high-contrast
imaging observations using locally optimized combination of images
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Techniques : image processing; high-contrast imaging; speckle
suppression; exoplanets imaging; exoplanets spectroscopy
ID POINT-SPREAD FUNCTIONS; WAVE-FRONT CONTROL; ADAPTIVE OPTICS; HR 8799;
PLANET; STAR; RECONSTRUCTION; ASTROMETRY; MOTION; SCALE
AB Direct imaging and spectroscopy can advance our understanding of planet formation and migration through the detection and characterization of extrasolar planets on wide orbits. Accurate photometry and astrometry of detected companions are of crucial importance to derive the planet physical properties. We present an extension of the Locally optimized combination of images (LOCI) method to measure the highest-fidelity photometry as well as accurate astrometry of detected companions. This algorithm is also generalized to Integral-Field Spectrograph (IFS) data processing, giving advantages of a simultaneous angular and spectral differential imaging reduction, retrieving high-fidelity spectra from PSF-subtracted cubes.
C1 [Maire, Jerome; Graham, James R.] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada.
[Gagne, Jonathan; Lafreniere, David; Doyon, Rene] Univ Montreal, Dept Phys, Montreal, PQ H3 C3 J7, Canada.
[Veran, Jean-Pierre] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC, Canada.
[Poyneer, Lisa A.] Lawrence Livermore Natl Lab, POB 5508, Livermore, CA 94550 USA.
RP Maire, J (reprint author), Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada.
EM maire@di.utoronto.ca
OI Gagne, Jonathan/0000-0002-2592-9612; Lafreniere,
David/0000-0002-6780-4252
NR 32
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 844760
DI 10.1117/12.926247
PG 14
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300189
ER
PT S
AU Morzinski, KM
Macintosh, BA
Close, LM
Marois, C
Konopacky, Q
Patience, J
AF Morzinski, Katie M.
Macintosh, Bruce A.
Close, Laird M.
Marois, Christian
Konopacky, Quinn
Patience, Jenny
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI High-contrast imaging in the Hyades with snapshot LOCI
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE adaptive optics; PSF; LOCI; image diversity; high-contrast imaging;
brown dwarf; Hyades
AB To image faint substellar companions obscured by the stellar halo and speckles, scattered light from the bright primary star must be removed in hardware or software. We apply the "locally-optimized combination of images" (LOCI) algorithm to 1-minute Keck Observatory snapshots of GKM dwarfs in the Hyades using source diversity to determine the most likely PSF. We obtain a mean contrast of 10(-2) at 0.'' 01, 10(-4) at <1 '', and 10(-5) at 5 ''. New brown dwarf and low-mass stellar companions to Hyades primaries are found in a third of the 84 targeted systems. This campaign shows the efficacy of LOCI on snapshot imaging as well as on bright wide binaries with off-axis LOCI, reaching contrasts sufficient for imaging 625-Myr late-L/early-T dwarfs purely in post-processing.
C1 [Morzinski, Katie M.; Close, Laird M.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Macintosh, Bruce A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Marois, Christian] Herzberg Inst Astrophys, NRC CNRC, Victoria, BC, Canada.
[Konopacky, Quinn] Dunlap Inst Astron & Astrophys, Toronto, ON, Canada.
[Patience, Jenny] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA.
RP Morzinski, KM (reprint author), Univ Arizona, Steward Observ, Tucson, AZ 85721 USA.
EM ktmorz@arizona.edu
OI Morzinski, Katie/0000-0002-1384-0063
FU NASA through the Sagan Fellowship Program [NAS7- 03001]; University of
California; National Science Foundation Science and Technology Center
for Adaptive Optics; UC Santa Cruz [AST- 9876783]; University of
California, Lawrence Livermore National Laboratory [W- 7405- ENG- 48]
FX This work was performed in part under contract with the Jet Propulsion
Laboratory and is funded by NASA through the Sagan Fellowship Program
under Prime Contract No. NAS7- 03001. JPL is managed for the National
Aeronautics Space Administration ( NASA) by the California Institute of
Technology. Any opinions, findings, and conclusions or recommendations
expressed in this publication are those of the authors and do not
necessarily reflect the views of the National Aeronautics Space
Administration ( NASA) or of The California Institute of Technology.
This research was supported in part by the University of California and
National Science Foundation Science and Technology Center for Adaptive
Optics, managed by the UC Santa Cruz under cooperative agreement No.
AST- 9876783. Portions of this work were performed under the auspices of
the U. S. Department of Energy by the University of California, Lawrence
Livermore National Laboratory under Contract W- 7405- ENG- 48.
NR 7
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 84470O
DI 10.1117/12.926377
PG 12
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300021
ER
PT S
AU Savransky, D
Macintosh, BA
Thomas, SJ
Poyneer, LA
Palmer, DW
De Rosa, RJ
Hartung, M
AF Savransky, Dmitry
Macintosh, Bruce A.
Thomas, Sandrine J.
Poyneer, Lisa A.
Palmer, David W.
De Rosa, Robert J.
Hartung, Markus
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Focal plane wavefront sensing and control for ground-based imaging
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE AO; GPI; high-contrast imaging; focal plane wavefront control
AB We evaluate the performance of existing wavefront sensing and control techniques, including speckle nulling and electric field conjugation, and discuss their applicability to high-contrast imaging spectrographs such as the Gemini Planet Imager (GPI). These techniques can be highly useful in correcting system phase errors, and can potentially improve instrument operating efficiency by working in conjunction with the dedicated adaptive optics (AO) wavefront sensor. We discuss the specifics of our implementation of speckle suppression for GPI and present lab demonstrations with average contrast improvements from 5.7x10(-6) to 1.03x10(-6).
C1 [Savransky, Dmitry; Macintosh, Bruce A.; Poyneer, Lisa A.; Palmer, David W.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Thomas, Sandrine J.; Hartung, Markus] Gemini Observ, La Serena, Chile.
[De Rosa, Robert J.] Univ Exeter, Exeter EX4 4QJ, Devon, England.
RP Savransky, D (reprint author), Lawrence Livermore Natl Lab, Livermore, CA USA.
EM savransky1@llnl.gov
RI Savransky, Dmitry/M-1298-2014
OI Savransky, Dmitry/0000-0002-8711-7206
FU GPI collaboration; GPI integration and testing team; U.S.Department of
Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344];
LLNL-CONF-563503
FX The authors would like to thank the entire GPI collaboration, and
especially the GPI integration and testing team for their support and
dedication. Portionos of this work performed under the auspices of the
U.S.Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344.This document number is LLNL-CONF-563503
NR 16
TC 5
Z9 5
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 84476S
DI 10.1117/12.926353
PG 11
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300213
ER
PT S
AU Thomas, S
Poyneer, L
Savransky, D
Macintosh, B
Hartung, M
Dillon, D
Gavel, D
Dunn, J
Wallace, K
Palmer, D
de Rosa, R
AF Thomas, S.
Poyneer, L.
Savransky, D.
Macintosh, B.
Hartung, M.
Dillon, D.
Gavel, D.
Dunn, Jennifer
Wallace, K.
Palmer, D.
de Rosa, Robert
BE Ellerbroek, BL
Marchetti, E
Veran, JP
TI Wavefront sensing and correction with the Gemini Planet Imager
SO ADAPTIVE OPTICS SYSTEMS III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive Optics Systems III
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Extreme adaptive optics; Interferometry; High contrast imaging;
Extra-solar planet detection
AB High-contrast imaging is a growing observational technique aimed at discovering and characterizing extrasolar planets. The Gemini Planet Imager (GPI) is designed to achieve contrast ratios of 10(-6) - 10(-7) and requires unprecedented wavefront correction and coronagraphic control of diffraction. GPI is a facility instrument now undergoing integration and testing and is scheduled for first light on the 8-m Gemini South telescope towards the end of 2012. In this paper, we focus on the wavefront sensing and correction aspects of the instrument. To measure the wavefront, GPI combines a Shack-Hartmann wavefront sensor and a high-accuracy infrared interferometric wavefront calibration system. The Shack-Hartmann wavefront sensor uses 1700 subapertures to precisely sample the wavefront at 1.5 kHz and features a spatial filter to prevent aliasing. The wavefront calibration system measures the slower temporal frequency errors as well as non-common path aberrations. The wavefront correction is performed using a two-stage adaptive optics system employing a 9x9 piezoelectric deformable mirror and a 43x43 actuators MEMS deformable mirror operating in a woofer-tweeter configuration. Finally, an image sharpening technique is used to further increase the contrast of the final image. In this paper, we describe the three wavefront sensing methods and how we combine their respective information to achieve the best possible contrast.
C1 [Thomas, S.; Hartung, M.] Gemini Observ, Hilo, HI USA.
[Poyneer, L.; Savransky, D.; Palmer, D.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Wallace, K.] Jet Prop Lab, Pasadena, CA USA.
[Macintosh, B.; Dunn, Jennifer] Herzberg Inst Astrophys, NRCC, Victoria, BC, Canada.
[Dillon, D.; Gavel, D.] UCO, Lick Observ, Santa Cruz, CA 95060 USA.
[de Rosa, Robert] Univ Exeter, Exeter EX4 4QL, Devon, England.
RP Thomas, S (reprint author), Gemini Observ, Hilo, HI USA.
EM sthomas@gemini.edu
RI Savransky, Dmitry/M-1298-2014
OI Savransky, Dmitry/0000-0002-8711-7206
FU U.S.Department of Energy by Lawrence Livermore National Laboratory
[W-7405-Eng-48, DE-AC5207NA27344]; Natural Science and Engineering
Council of Canada
FX The GPI team would like to thank the staff of the Gemini Observatory for
their collaboration on the design of our instrument. This work was
performed under the auspices of the U.S.Department of Energy by Lawrence
Livermore National Laboratory in part under Contract W-7405-Eng-48 and
in part under Contract DE-AC5207NA27344. We alsoacknowledge support from
the Natural Science and Engineering Council of Canada. The Gemini
Observatory is operated by the Association of Universities for Research
in Astronomy, Inc., under a cooperative agreement with the NSF on behalf
of the Gemini partnership: the National Science Foundation (United
States), the Particle Physics and Astronomy Research Council (United
Kingdom), the National Research Council (Canada), CONICYT (Chile), the
Australian Research Council (Australia), CNPq (Brazil), and CONICET
(Argentina).
NR 14
TC 1
Z9 1
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9148-0
J9 PROC SPIE
PY 2012
VL 8447
AR 844714
DI 10.1117/12.926680
PG 12
WC Optics
SC Optics
GA BDA88
UT WOS:000312387300036
ER
PT J
AU Pavicevic, MK
Bosch, F
Amthauer, G
Anicin, I
Boev, B
Bruchle, W
Cvetkovic, V
Djurcic, Z
Henning, WF
Jelenkovic, R
Pejovic, V
Weiss, A
AF Pavicevic, M. K.
Bosch, F.
Amthauer, G.
Anicin, I.
Boev, B.
Bruechle, W.
Cvetkovic, V.
Djurcic, Z.
Henning, W. F.
Jelenkovic, R.
Pejovic, V.
Weiss, A.
TI Status and New Data of the Geochemical Determination of the pp-Neutrino
Flux by LOREX
SO ADVANCES IN HIGH ENERGY PHYSICS
LA English
DT Article
ID PROJECTILE FRAGMENTS; BETA-DECAY; SOLAR; ATOMS; MUONS
AB LOREX (LORandite EXperiment) addresses the determination of the solar (pp) neutrino flux during the last four million years by exploiting the reaction Tl-205 + nu(e) -> Pb-205 + e(-) with an incomparably low-energy threshold of 50 keV for the capture of solar neutrinos. The ratio of Pb-205/Tl-205 atoms in the Tl-bearing mineral lorandite provides, if corrected for the cosmic-ray induced background, the product of the flux of solar neutrinos and their capture probability by Tl-205, averaged over the age of lorandite. To get the mean solar neutrino flux itself, four problems have to be addressed: (1) the geological age of lorandite, (2) the amount of background cosmic-ray-induced Pb-205 atoms which strongly depends on the erosion rate of the lorandite-bearing rocks, (3) the capture probability of solar neutrinos by Tl-205 and (4) the extraction of lorandite and the appropriate technique to "count" the small number of Pb-205 atoms in relation to the number of Tl-205 atoms. This paper summarizes the status of items 1 (age) and 3 (neutrino capture probability) and presents in detail the progress achieved most recently concerning the items 2 (background/erosion) and 4 ("counting" of Pb-205 atoms in lorandite).
C1 [Pavicevic, M. K.; Amthauer, G.] Salzburg Univ, Dept Mineral, Div Mat Sci & Phys, A-5020 Salzburg, Austria.
[Bosch, F.; Bruechle, W.] GSI Helmholtzzentrum Schwerionenforsch, D-64291 Darmstadt, Germany.
[Anicin, I.; Pejovic, V.] Univ Belgrade, Inst Phys, Belgrade 11000, Serbia.
[Boev, B.] Goce Delcev Univ Stip, Fac Min & Geol, Stip 92000, Macedonia.
[Cvetkovic, V.; Jelenkovic, R.] Univ Belgrade, Fac Min & Geol, Belgrade 11000, Serbia.
[Djurcic, Z.] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA.
[Henning, W. F.] Tech Univ Munich, Phys Dept E12, D-85748 Garching, Germany.
[Weiss, A.] Max Planck Inst Astrophys, D-85741 Garching, Germany.
RP Pavicevic, MK (reprint author), Salzburg Univ, Dept Mineral, Div Mat Sci & Phys, Hellbrunner St 34, A-5020 Salzburg, Austria.
EM miodragk.pavicevic@gmail.com
RI Weiss, Achim/C-4870-2013
OI Weiss, Achim/0000-0002-3843-1653
FU FWF - Wien [P 20594]
FX The authors thank the FWF - Wien for supporting this project by grant P
20594.
NR 30
TC 0
Z9 0
U1 0
U2 5
PU HINDAWI PUBLISHING CORPORATION
PI NEW YORK
PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
SN 1687-7357
J9 ADV HIGH ENERGY PHYS
JI Adv. High. Energy Phys.
PY 2012
AR 274614
DI 10.1155/2012/274614
PG 15
WC Physics, Particles & Fields
SC Physics
GA 065TX
UT WOS:000313173400001
ER
PT S
AU Ali, Z
Chuang, YD
Kilcoyne, D
Aguilar, A
Mo, SK
Hussain, Z
AF Ali, Zulfiqar
Chuang, Yi-De
Kilcoyne, David
Aguilar, Alejandro
Mo, Sung-Kwan
Hussain, Zahid
BE Goto, S
Morawe, C
Khounsary, AM
TI Upgrade of the Beamline 10.0.1 at the Advanced Light Source
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE Beamline; ARPES; SGM; SHADOW; ray tracing; X-ray optics
ID UNDULATOR BEAMLINE; HIGH-RESOLUTION; PERFORMANCE
AB Beamline 10.0.1 delivers the photons from a 4.5 m long 10 cm periodicity undulator (U100) to various endstations in its three branchlines. The beamline uses a spherical grating monochromator (SGM) to produce high energy resolution photon beam, with three gratings to cover the photon energy range from 17 to 340 eV. Typically, angle-resolved photoemission (ARPES) measurements use 30-70 eV photons. The beam size at the High Energy Resolution Spectroscopy (HERS) endstation, designed for ARPES, is measured to be 250 mu m (H) by 100 mu m (V). Due to grazing incidence geometry in the HERS endstation, the photon beam will have a large projection on the sample surface which could lead to degradation of experimental resolutions. We are in the process of designing and replacing some of the existing mirrors to improve the focus spot at HERS endstation. The detailed design parameters and possible upgrade paths will be presented with verifications using SHADOW ray-tracing program.
C1 [Ali, Zulfiqar; Chuang, Yi-De; Kilcoyne, David; Aguilar, Alejandro; Mo, Sung-Kwan; Hussain, Zahid] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Ali, Z (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RI Kilcoyne, David/I-1465-2013
NR 10
TC 0
Z9 0
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020P
DI 10.1117/12.930328
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700020
ER
PT S
AU Allured, R
Fernandez-Perea, M
Soufli, R
Alameda, JB
Maxwell, A
Pivovaroff, MJ
Gullikson, EM
Kaaret, P
AF Allured, Ryan
Fernandez-Perea, Monica
Soufli, Regina
Alameda, Jennifer B.
Maxwell, Alicia
Pivovaroff, Michael J.
Gullikson, Eric M.
Kaaret, Philip
BE Goto, S
Morawe, C
Khounsary, AM
TI A Soft X-ray Beam-splitting Multilayer Optic for the NASA GEMS Bragg
Reflection Polarimeter
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE Multilayers; Polarimetry; GEMS; Beamsplitter; Bragg Reflection
Polarimeter; BRP
ID TELESCOPE
AB A soft X-ray, beam-splitting, multilayer optic has been developed for the Bragg Reflection Polarimeter on the NASA Gravity and Extreme Magnetism Small Explorer Mission (GEMS). The optic is designed to reflect 0.5 keV X-rays through a 90 degree angle to the BRP detector, and transmit 2-10 keV X-rays to the primary polarimeter. A transmission requirement prevents the use of a thick substrate, so a 2 mu m thick polyimide membrane was used. Atomic force microscopy has shown the membrane to possess high spatial frequency roughness less than 0.2 nm rms, permitting adequate X-ray reflectance. A multilayer thin film was especially developed with reflectance and transmission properties that satisfy the BRP requirements and with near-zero stress. Multilayer depositions for prototype reflectors have been performed via magnetron sputtering. Reflectance and transmission measurements closely match theoretical predictions, both before and after rigorous environmental testing.
C1 [Allured, Ryan; Maxwell, Alicia; Kaaret, Philip] Univ Iowa, Iowa City, IA 52240 USA.
[Fernandez-Perea, Monica; Soufli, Regina; Alameda, Jennifer B.; Pivovaroff, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Gullikson, Eric M.] Lawrence Livermore Natl Lab, Berkeley, CA USA.
RP Allured, R (reprint author), Univ Iowa, Iowa City, IA 52240 USA.
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU auspices of the U.S. Department of Energy by Lawrence Livermore National
Laboratory [DE-A052-07NA27344]; University of California Lawrence
Berkeley National Laboratory [DE-ACO3-76F00098]; Director, Office of
Science, Office of Basic Energy Sciences of the U.S. Department of
Energy [DE-ACO2-050H11231]; NASA [NNX08AY580]
FX The authors would like to thank Bruce Lairson of Luxel Corp. for
providing helpful advice, many polylmide samples for analysis, and
confocal microscope scan data. We also thank Steve McBride of the Space
Sciences Laboratory for use of his thermal cycling chamber, and John
Toinsick for making the arrangements. Ryan Allured and Philip Kaaret are
grateful to Takashi Okajima and Yang Soong at GSFC for guidance during
the early stages of reflector development. We acknowledge that nearly
all of our multilayer modeling was made possible with David Windt's IMD
software. This work was performed under the auspices of the U.S.
Department of Energy by Lawrence Livermore National Laboratory under
Contract No. DE-A052-07NA27344 and by the University of California
Lawrence Berkeley National Laboratory under Contract No.
DE-ACO3-76F00098. The Advanced Light Source is supported by the
Director, Office of Science, Office of Basic Energy Sciences of the U.S.
Department of Energy under Contract No. DE-ACO2-050H11231. Ryan Allured
and Philip Kaaret acknowledge partial support from NASA grant
NNX08AY580.
NR 13
TC 2
Z9 2
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 850206
DI 10.1117/12.930093
PG 12
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700003
ER
PT S
AU Conley, R
Bouet, N
Zhou, J
Yan, HF
Chu, Y
Lauer, K
Miller, J
Chu, LK
Jahedi, N
AF Conley, Ray
Bouet, Nathalie
Zhou, Juan
Yan, Hanfei
Chu, Yong
Lauer, Kenneth
Miller, Jesse
Chu, Luke
Jahedi, Nima
BE Goto, S
Morawe, C
Khounsary, AM
TI Advanced multilayer Laue lens fabrication at NSLS-II
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE thin film; multilayer; Laue lens; sputter; deposition; x-ray; optics
AB In an ongoing effort to advance the state of the art in x-ray nanofocusing optics([1]), multilayer Laue lens (MLL)([2,3]) fabrication at NSLS-II has matured to include multi-gas reactive sputtering for stress and interfacial roughness reduction, which has recently led to a 70 micron thick single-growth MLL. Reactive sputtering was found to produce WSi2/Si multilayers with an accumulated film stress significantly lower than Ar-only deposition with identical growth conditions. Significant effort has been focused on the achievement of highly-stable gas mixing and process gas pressure measurement for multilayer growth and the problems faced along with implemented solutions will be discussed in detail. Proper layer thickness and placement throughout the stack presents a major obstacle to the fabrication of high-quality nanofocusing MLLs. Initial metrology of extremely thick MLLs by stitching many scanning electron microscope images was found to be greatly simplified by inclusion of marker labels within the stack.
C1 [Conley, Ray; Bouet, Nathalie; Zhou, Juan; Yan, Hanfei; Chu, Yong; Lauer, Kenneth; Miller, Jesse] Brookhaven Natl Lab, NSLS II, Expt Facil Div, Upton, NY 11973 USA.
[Chu, Luke] Northport High Sch, Northport, NY USA.
[Jahedi, Nima] Argonne Natl Lab, X ray Sci Div, Adv Photon Source, Argonne, IL 60439 USA.
RP Conley, R (reprint author), Brookhaven Natl Lab, NSLS II, Expt Facil Div, Upton, NY 11973 USA.
RI Conley, Ray/C-2622-2013; Yan, Hanfei/F-7993-2011;
OI Yan, Hanfei/0000-0001-6824-0367; Bouet, Nathalie/0000-0002-5816-9429
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-98CH10886]
FX This work was supported by the U.S. Department of Energy, Office of
Science, Office of Basic Energy Sciences, under Contract No.
DE-AC02-98CH10886. We thank the BNL student HSRP Program and the SULI
Program.
NR 10
TC 4
Z9 4
U1 0
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 850202
DI 10.1117/12.930216
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700001
ER
PT S
AU Haboub, A
MacDowell, AA
Marchesini, S
Parkinson, DY
AF Haboub, A.
MacDowell, A. A.
Marchesini, S.
Parkinson, D. Y.
BE Goto, S
Morawe, C
Khounsary, AM
TI Coded Aperture Imaging for Fluorescent X-rays
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE Coded aperture; NTHT; elemental mapping; Fluorescent x-rays
ID ARRAYS
AB We employ a coded aperture pattern in front of a charge couple device (CCD) pixilated detector to image fluorescent x-rays (6-25KeV) from samples irradiated with synchrotron radiation. Coded apertures encode the angular direction of x-rays, and given a known source plane, allow for a large Numerical Aperture x-ray imaging system. The algorithm to develop the free standing coded aperture pattern of the Non-Two-Holes-Touching (NTHT) was developed. The algorithms to reconstruct the x-ray image from the encoded pattern recorded are developed by means of modeling and confirmed by experiments on standard samples. Spatial resolution and efficiency are determined for the next development stage whereby an energy resolving pixilated CCD will be deployed allowing for elemental imaging.
C1 [Haboub, A.; MacDowell, A. A.; Marchesini, S.; Parkinson, D. Y.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Haboub, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RI Parkinson, Dilworth/A-2974-2015
OI Parkinson, Dilworth/0000-0002-1817-0716
NR 7
TC 1
Z9 1
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 850209
DI 10.1117/12.981244
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700005
ER
PT S
AU Heald, S
Seidler, GT
Mortensen, D
Mattern, B
Bradley, JA
Hess, N
Bowden, M
AF Heald, Steve
Seidler, Gerald T.
Mortensen, Devon
Mattern, Brian
Bradley, Joseph A.
Hess, Nancy
Bowden, Mark
BE Goto, S
Morawe, C
Khounsary, AM
TI Recent Tests of X-ray Spectrometers using Polycapillary optics
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE Polycapillary; X-ray Spectroscopy; X-ray spectrometers; XAS
ID ELECTRONIC EXCITATIONS; CAPILLARY OPTICS; HIGH-PRESSURE; WAFERS
AB Polycapillary optics provide a promising approach for coupling highly-divergent x-ray emission or inelastic scattering to high-resolution crystal analyzers. We present recent results looking at the application of polycapillary collimators to emission spectrometers. The first application uses a collimating optic and a flat crystal to provide a tunable x-ray fluorescence detector. At high-flux synchrotron radiation sources there is sufficient flux (similar to 10(13) ph/sec) to allow application of X-ray Absorption Spectroscopy (XAS) to ppb concentrations if the fluorescence signal can be isolated from an intense background. The polycapillary based analyzer easily achieves the >10(6) background reduction needed for such measurements. It has the additional advantage of being confocal, only collecting the signal from a small volume at the optic focus, effectively eliminating background from sample substrates, windows, or air scattering. Second, the same type of analyzer can be used for higher-resolution emission spectroscopy if operated close to 90 degrees Bragg angle, and we report results of the commissioning of a user-available instrument suitable for few-eV resolution emission spectroscopy, including the demonstration of roughly order-of-magnitude improved measurement times compared to use of a traditional, single spherically-bent crystal analyzer. As part of this effort, we have developed a process for enhancing the integral reflectivity of Si analyzer crystals through plastic deformation at high temperatures.
C1 [Heald, Steve] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Seidler, Gerald T.; Mortensen, Devon; Mattern, Brian] Univ Washington, Dept Phys, Seattle, WA 98195 USA.
[Bradley, Joseph A.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Hess, Nancy; Bowden, Mark] Pacific Northwest Natl Lab, Richland, WA USA.
RP Heald, S (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
OI Hess, Nancy/0000-0002-8930-9500
FU Chemical Sciences; Geosciences and Biosciences Division; Office of Basic
Energy Sciences; Office of Science, U.S. Department of Energy; Chemical
Imaging Initiative LDRD program at Pacific Northwest National
Laboratory; US Department of Energy - Basic Energy Sciences; NSERC;
University of Washington; Canadian Light Source and the Advanced Photon
Source; U.S. DOE [DE-AC02-06CH11357]; U.S. Department of Energy by
Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; U.S.
Department of Energy [DE-SC0002194]; CIW; CDAC; UNLV; LLNL; DOE-NNSA;
DOE-BES; NSF
FX Portions of this work were supported by the Chemical Sciences,
Geosciences and Biosciences Division, Office of Basic Energy Sciences,
Office of Science, U.S. Department of Energy. Support from the Chemical
Imaging Initiative LDRD program at Pacific Northwest National Laboratory
is also gratefully acknowledged. The PNC/ XSD facilities at the Advanced
Photon Source, and research at these facilities, are supported by the US
Department of Energy - Basic Energy Sciences, a Major Resources Support
grant from NSERC, the University of Washington, the Canadian Light
Source and the Advanced Photon Source. Use of the Advanced Photon
Source, an Office of Science User Facility operated for the U. S.
Department of Energy ( DOE) Office of Science by Argonne National
Laboratory, was supported by the U. S. DOE under Contract No.
DE-AC02-06CH11357. Portions of this work was performed under the
auspices of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under Contract No. DE-AC52-07NA27344. G. T. S. acknowledges
support from the U.S. Department of Energy under Contract No.
DE-SC0002194. Portions of this work were performed at HPCAT ( Sector
16). HPCAT is supported by CIW, CDAC, UNLV, and LLNL through funding
from DOE-NNSA, DOE-BES, and NSF. We also thank J. David Dickman (Baylor
College of Medicine) for use of his Fe edge data.
NR 15
TC 1
Z9 1
U1 1
U2 10
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020I
DI 10.1117/12.929960
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700014
ER
PT S
AU Hedayat, A
Khounsary, A
Mashayek, F
AF Hedayat, Ali
Khounsary, Ali
Mashayek, Farzad
BE Goto, S
Morawe, C
Khounsary, AM
TI Thermo-mechanical properties of silicon, germanium, diamond, beryllium
and silicon carbide for high heat load x-ray optics applications
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE Thermal conductivity; thermal expansion coefficient; heat capacity;
elasticity; Lattice parameter; thermophysical properties; silicon;
germanium; diamond; beryllium; silicon carbide
ID THERMAL-EXPANSION MEASUREMENTS; DOPANT DENSITY RELATIONSHIP;
SINGLE-CRYSTAL BERYLLIUM; LOW-TEMPERATURES; DEGREES K;
ELASTIC-CONSTANTS; DOPED SILICON; DEGREES C; CONDUCTIVITY; CAPACITY
AB Increased thermal power of the x-ray beams produced at synchrotron radiation facilities such as the Advanced Photon Source at Argonne National Laboratory requires improvements in the thermal management of the components with which the beams interact. Crystals of silicon, germanium, diamond, beryllium, and silicon carbide are important substrate materials in this regard. Accurate physical, thermal, and mechanical properties of these materials, especially at cryogenic temperatures, are needed in the analysis and design of high heat load x-ray components. In this paper, we present a collection of the relevant data, and include curve fits, when possible, for ease of use in the analysis.
C1 [Hedayat, Ali; Mashayek, Farzad] Univ Illinois, Dept Mech & Ind Engn, 842 W Taylor St, Chicago, IL 60607 USA.
[Khounsary, Ali] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Hedayat, A (reprint author), Univ Illinois, Dept Mech & Ind Engn, 842 W Taylor St, Chicago, IL 60607 USA.
EM amk@aps.anl.gov
FU U.S. Department of Energy, Office of Science [DE-AC- 0206CH11357]
FX This work was supported by the U.S. Department of Energy, Office of
Science, under Contract No. DE-AC- 0206CH11357.
NR 142
TC 1
Z9 1
U1 3
U2 15
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020O
DI 10.1117/12.929362
PG 22
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700019
ER
PT S
AU Khounsary, A
Strons, P
Kujala, N
Macrander, A
AF Khounsary, Ali
Strons, Philip
Kujala, Naresh
Macrander, Albert
BE Goto, S
Morawe, C
Khounsary, AM
TI Limitations of Liquid Nitrogen Cooling of High Heat Load X-Ray
Monochromators
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE X-ray; optics; monochromator; silicon; cryogenic cooling; analytical
solutions
AB X-ray monochromators, made of single crystals or multilayer coatings, are the most common optical components on many synchrotron beamlines. They intercept the broad-spectrum x-ray (white or pink) beams generated by the radiation source and absorb all but select narrow spectral bands of x-rays, which are diffracted according to Bragg's Law.
With some incident beam power in the kW range, minimizing thermally induced deformation detrimental to the performance of the device necessitates the design of optimally cooled monochromators.
Monochromator substrate designs have evolved, in parallel with thermal loads of the incident beams, from simple blocks with no cooling, to water cooled (both contact-cooled and internally cooled), and to cryogenically cooled designs where the undesirable thermal distortions are kept in check by operating in a temperature range where the thermomechanical properties of the substrate materials are favorable. Fortuitously, single-crystal silicon at cryogenic temperatures has an exceptionally favorable combination of high thermal conductivity and low thermal expansion coefficient.
With further increases in x-ray beam power, partly as a result of the upgrades to the existing synchrotron facilities, the question arises as to the ultimate limits of liquid-nitrogen-cooled silicon monochromators' ability to handle the increased thermal load.
In this paper, we describe the difficulties and begin the investigation by using a simple geometric model for a monochromator and obtain analytical solutions for the temperature field. The temperature can be used as a proxy for thermally induced deformation. The significant role of the nonlinear material properties of silicon is examined.
C1 [Khounsary, Ali; Strons, Philip; Kujala, Naresh; Macrander, Albert] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Khounsary, A (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
NR 4
TC 0
Z9 0
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020C
DI 10.1117/12.960243
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700008
ER
PT S
AU Shvyd'ko, Y
AF Shvyd'ko, Yuri
BE Goto, S
Morawe, C
Khounsary, AM
TI Enhanced X-Ray Angular Dispersion and X-ray Spectrographs with Resolving
Power Beyond 10(8)
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
ID CZERNY-TURNER SPECTROMETER; MONOCHROMATOR; RESOLUTION; GEOMETRY; BEAMS
AB Spectrograph is an optical device that is used to disperse photons of different energies E into distinct directions and space locations, and to take a snapshot of the whole spectrum of photon energies with a spatially sensitive photon detector. Substantial advantage of a spectrograph over an ordinary spectral analyzer, is its ability to deal with many photon energies simultaneously, thus reducing exposure time per spectrum considerably. To realize a spectrograph, dispersing elements with large angular dispersion rate are required. In visible light optics this is easily achieved with diffraction gratings. In hard x-ray regime this is a problem. Here we show, on the example of CDW x-ray optics [1-3], that multi-crystal arrangements may feature cumulative angular dispersion rates more than an order of magnitude larger than those attainable in single Bragg reflections. This makes, first, hard x-ray spectrographs feasible, and, secondly, a resolving power beyond E/Delta E greater than or similar to 10(8) achievable.
C1 Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Shvyd'ko, Y (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
EM shvydko@aps.anl.gov
NR 15
TC 5
Z9 5
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020J
DI 10.1117/12.930442
PG 5
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700015
ER
PT S
AU Walko, DA
Jung, IW
Lopez, D
Mukhopadhyay, D
Schwartz, CP
Shenoy, GK
Wang, J
AF Walko, Donald A.
Jung, Il Woong
Lopez, Daniel
Mukhopadhyay, Deepkishore
Schwartz, Craig P.
Shenoy, Gopal K.
Wang, Jin
BE Goto, S
Morawe, C
Khounsary, AM
TI Temporal modulation of synchrotron x rays using torsional MEMS mirrors
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE MEMS; Synchrotron; X-ray; Micromirror; Reflectivity; Chopper
ID CHOPPER
AB We demonstrate the use of electrostatically driven micro-electromechanical systems (MEMS) devices to control and deliver synchrotron x-ray pulses at high repetition rates. Torsional MEMS micromirrors, rotating at duty cycles of 2 kHz and higher, were used to modulate grazing-incidence x rays, producing x-ray bunches shorter than 10 mu s. We find that dynamic deformation of the oscillating micromirror is a limiting factor in the duration of the x-ray pulses produced, and we describe plans for reaching higher operating frequencies using mirrors designed for minimal deformation.
C1 [Walko, Donald A.; Schwartz, Craig P.; Shenoy, Gopal K.; Wang, Jin] Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Jung, Il Woong; Lopez, Daniel; Mukhopadhyay, Deepkishore] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Walko, DA (reprint author), Argonne Natl Lab, Adv Photon Source, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM d-walko@anl.gov
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357]
FX We thank Bernhard Adams for use of the electronics used to synchronize
the 2- kHz micromirror to the storage ring. This work was supported by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06CH11357.
NR 11
TC 0
Z9 0
U1 1
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020H
DI 10.1117/12.930057
PG 6
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700013
ER
PT S
AU Wieczorek, M
Khachatryan, R
Shvyd'ko, Y
Smith, RH
Iwasaki, K
Miller, S
Qian, J
Huang, X
Assoufid, L
AF Wieczorek, Michael
Khachatryan, Ruben
Shvyd'ko, Yuri
Smith, Robert H.
Iwasaki, Kenichi
Miller, Suzanne
Qian, Jun
Huang, Xianrong
Assoufid, Lahsen
BE Goto, S
Morawe, C
Khounsary, AM
TI Achieving Optimal Flatness and Surface Roughness Properties for Novel
X-ray Optic Structures Formed by Dicing Saws
SO ADVANCES IN X-RAY/EUV OPTICS AND COMPONENTS VII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in X-Ray/EUV Optics and Components VII
CY AUG 13, 2012
CL San Diego, CA
SP SPIE
DE x-ray optics; dicing saw; flatness; roughness; synchrotron radiation;
phase shifter interferometer
AB Crystal-based x-ray optics are widely used in the synchrotron radiation field. Such optics include monochromators, channel-cut crystals, spectral analyzers, and phase plates that are generally made with standard fabrication tools such as grinders, ultrasonic mills, blade saws, and wire saws. However, modern synchrotron radiation instruments require more complicated and high-precision crystal structures that cannot be fabricated by these conventional tools. Examples include narrow channels and crystal cavities that require smooth and strain-free sidewalls or inner surfaces. Since it is extremely difficult to polish such surfaces by conventional means, specialized cutting tools are required to make the as-cut surfaces as smooth as possible. A possible way to obtain such smooth surfaces is to use a dicing saw as a fabrication tool - a tool typically used in the microelectronics industry to cut or dice semiconductor and other materials. Here we present our studies on the use of dicing saws for cutting innovative, monolithic, x-ray optic devices comprised of tall, narrow-standing, thin crystal-plate arrays. We report cutting parameters that include the rotational speed of the cutting blade (a.k.a. spindle speed), cutting speed (a.k.a. feed rate), number of passes for each cut depth (if required), and diamond grit size for producing the flattest and most smooth side walls. Blade type and construction (sintered, Ni, and resin) also play critical roles in achieving optimum results. The best experimental data obtained produced an average surface roughness of 49 nm and a peak-to-valley flatness of 3625 nm. By achieving these results, we have been able to assist experimenters in the synchrotron radiation field in their efforts to create functional and novel optical devices.
C1 [Wieczorek, Michael; Khachatryan, Ruben; Shvyd'ko, Yuri; Qian, Jun; Huang, Xianrong; Assoufid, Lahsen] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Smith, Robert H.] Adv Dicing Technol Ltd, Horsham, PA 19044 USA.
[Iwasaki, Kenichi] Disco Hi Tec Amer Inc, Santa Clara, CA 95054 USA.
[Miller, Suzanne] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Wieczorek, M (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
FU DOE [DEFG02-02ER45969, DE-FG02-99ER45772]; UChicago Argonne; LLC;
Operator of Argonne National Laboratory ("Argonne"); U.S. Department of
Energy Office of Science laboratory [DE-AC02-06CH11357]
FX This work is dedicated to Dr. Ruben Khachatryan ( deceased); we are
deeply grateful for his many and substantial contributions to this
project and his friendship.; This work was supported by DOE Grant Nos.
DEFG02-02ER45969 and DE-FG02-99ER45772. This work was also supported by
the UChicago Argonne, LLC, Operator of Argonne National Laboratory
("Argonne"). Argonne, a U.S. Department of Energy Office of Science
laboratory, is operated under Contract No. DE-AC02-06CH11357.
NR 3
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9219-7
J9 PROC SPIE
PY 2012
VL 8502
AR 85020M
DI 10.1117/12.928369
PG 8
WC Optics; Physics, Applied
SC Optics; Physics
GA BDE73
UT WOS:000312964700018
ER
PT B
AU Hall, PB
Brandt, WN
Petitjean, P
Ak, NF
Paris, I
Aubourg, E
Anderson, SF
Schneider, DP
Bizyaev, D
Brinkmann, J
Myers, AD
Malanushenko, E
Malanushenko, V
Oravetz, DJ
Ross, NP
Shelden, A
Simmons, AE
Weaver, BA
York, DG
AF Hall, P. B.
Brandt, W. N.
Petitjean, P.
Ak, N. Filiz
Paris, I.
Aubourg, E.
Anderson, S. F.
Schneider, D. P.
Bizyaev, D.
Brinkmann, J.
Myers, A. D.
Malanushenko, E.
Malanushenko, V.
Oravetz, D. J.
Ross, N. P.
Shelden, A.
Simmons, A. E.
Weaver, B. A.
York, D. G.
BE Chartas, G
Hamann, F
Leighly, KM
TI BAL Quasars with Redshifted Troughs
SO AGN WINDS IN CHARLESTON
SE Astronomical Society of the Pacific Conference Series
LA English
DT Proceedings Paper
CT Conference on AGN Winds in Charleston
CY OCT 15-18, 2011
CL Coll Charleston, Charleston, SC
HO Coll Charleston
ID DIGITAL SKY SURVEY; BROAD ABSORPTION-LINE; EMISSION-LINE
AB We report the discovery in the Sloan Digital Sky Survey and the Baryon Oscillation Spectroscopic Survey of ten to twelve broad absorption line (BAL) quasars with high-ionization troughs which include absorption redshifted relative to the quasar rest frame. The redshifted troughs extend to velocities up to similar to 9000 km s(-1) and the trough widths exceed 3000 km s(-1) in all but one case. Approximately 1 in 1200 BAL quasars with blueshifted C IV absorption also has redshifted C IV absorption. There are several potentially viable ways to generate redshifted absorption which may be at work simultaneously (in the same objects or in different ones). Cases of infall or rotationally dominated outflows silhouetted against a quasar's extended continuum source would challenge current theoretical models of BAL quasars. Cases of outflows from one member of an unresolved binary quasar pair seen in absorption against the other, possibly with a contribution from the relativistic Doppler effect in gas moving at high velocity close to transverse to our line of sight, would provide new sightlines which literally cross-examine BAL outflows.
C1 [Hall, P. B.] York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada.
[Brandt, W. N.; Ak, N. Filiz; Schneider, D. P.] Penn State Univ, Dept Astron & Astrophys & Inst Gravitat & Cosmos, University Pk, PA 16802 USA.
[Petitjean, P.; Paris, I.] Univ Paris, Inst Astrophys Paris, F-75014 Paris, France.
[Ak, N. Filiz] Erciyes Univ, Dept Astron & Space Sci, Fac Sci, Kayseri 38039, Turkey.
[Aubourg, E.] Univ Paris 07, APC, F-75205 Paris 13, France.
[Anderson, S. F.] Univ Washington, Dept Astron, Seattle, WA 98195 USA.
[Bizyaev, D.; Brinkmann, J.; Malanushenko, E.; Malanushenko, V.; Oravetz, D. J.; Shelden, A.; Simmons, A. E.] Apache Point Observ, Sunspot, NM 88349 USA.
[Myers, A. D.] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA.
[Ross, N. P.] Lawrence Berkeley Natl Lab, Berkeley, CA 92420 USA.
[Weaver, B. A.] New York Univ, Ctr Cosmol & Particle Phys, New York, NY 10003 USA.
[York, D. G.] Univ Chicago, Dept Astron & Astrophys & Enrico Fermi Inst, Chicago, IL 60637 USA.
RP Hall, PB (reprint author), York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada.
EM phall@yorku.ca; niel@astro.psu.edu
RI Filiz Ak, Nurten/C-9686-2015; Brandt, William/N-2844-2015
OI Filiz Ak, Nurten/0000-0003-3016-5490; Brandt,
William/0000-0002-0167-2453
FU Alfred P. Sloan Foundation; Participating Institutions; National Science
Foundation; U.S. Department of Energy Office of Science
FX Funding for SDSS-III (http://www.sdss3.org/) has been provided by the
Alfred P. Sloan Foundation, the Participating Institutions, the National
Science Foundation, and the U.S. Department of Energy Office of Science.
SDSS-III is managed by the Astrophysical Research Consortium for the
Participating Institutions of the SDSS-II1 Collaboration.
NR 14
TC 0
Z9 0
U1 0
U2 2
PU ASTRONOMICAL SOC PACIFIC
PI SAN FRANCISCO
PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
BN 978-1-58381-802-2
J9 ASTR SOC P
PY 2012
VL 460
BP 78
EP +
PG 2
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDA26
UT WOS:000312277500018
ER
PT S
AU Ally, MR
Munk, JD
Baxter, VD
Gehl, AC
AF Ally, Moonis R.
Munk, Jeffrey D.
Baxter, Van D.
Gehl, Anthony C.
GP ASHRAE
TI Current Performance of Ground Source Heat Pumps for Space Conditioning
and for Water Heating under Simulated Occupancy Conditions
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
AB In this paper we present measured performance and efficiency metrics of Ground Source Heat Pumps (GSHPs) for space conditioning and for water heating connected to a horizontal ground heat exchanger (GHX) loop. The units were installed in a 345 m(2) (3700 ft(2)) high-efficiency test house built with structural insulated panels (SIPs), operated under simulated occupancy conditions, and located in Oak Ridge, Tennessee (USA) in US Climate Zone 4. The paper describes distinctive features of the building envelope, ground loop, and equipment, and provides detailed monthly performance of the GSHP system. Space conditioning needs of the house were satisfied by a nominal 2-ton (7.0 kW) water-to-air GSHP (WA-GSHP) unit with almost no auxiliary (resistance) heat usage. Recommendations for further improvement through engineering design changes are identified. The comprehensive set of data and analyses demonstrate the feasibility and practicality of GSHPs in residential applications and their potential to help achieve source energy and greenhouse gas emission reduction targets set under the IECC 2012 Standard.
C1 [Ally, Moonis R.; Munk, Jeffrey D.; Baxter, Van D.; Gehl, Anthony C.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Ally, MR (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
NR 12
TC 0
Z9 0
U1 1
U2 4
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 19
EP 26
PN 2
PG 8
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100003
ER
PT S
AU Munk, JD
Ally, MR
Baxter, VD
AF Munk, Jeffrey D.
Ally, Moonis R.
Baxter, Van D.
GP ASHRAE
TI Measured Impact on Space Conditioning Energy Use in a Residence Due to
Operating a Heat Pump Water Heater inside the Conditioned Space
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
AB The impact on space conditioning energy use due to operating a heat pump water heater (HPWH) inside the conditioned space is analyzed based on 2010-2011 data from a research house with simulated occupancy and hot water use controls. The 2700 ft(2) (251 m(2)) house is located in Oak Ridge, TN (mixed-humid climate) and is equipped with a 50 gallon (189 L) HPWH that provided approximately 55 gallons/d (208 L/d) of hot water at 120 degrees F (48.9 degrees C) to the house during the test period. The HPWH has been operated every other week from December 2010 through November 2011 in two modes; a heat pump only mode, and a standard mode that utilizes 15355 Btu/h (4500 W) resistance heating elements. The energy consumption of the air-source heat pump (ASHP) that provides space conditioning for the house is compared for the two HPWH operating modes with weather effects taken into account. Impacts during the heating and cooling seasons are compared.
C1 [Munk, Jeffrey D.; Ally, Moonis R.; Baxter, Van D.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Munk, JD (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
NR 2
TC 0
Z9 0
U1 1
U2 1
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 27
EP 33
PN 2
PG 7
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100004
ER
PT S
AU Tabares-Velasco, PC
Christensen, C
Bianchi, MVA
AF Tabares-Velasco, Paulo Cesar
Christensen, Craig
Bianchi, Marcus V. A.
GP ASHRAE
TI Validation Methodology to Allow Simulated Peak Reduction and Energy
Performance Analysis of Residential Building Envelope with Phase Change
Materials
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
ID SHAPE-STABILIZED PCM; STORAGE
AB Phase change materials (PCM) represent a potential technology to reduce peak loads and HVAC energy consumption in residential buildings. This paper summarizes NREL efforts to obtain accurate energy simulations when PCMs are modeled in residential buildings: the overall methodology to verify and validate Conduction Finite Difference (CondFD) and PCM algorithms in EnergyPlus is presented in this study. It also shows preliminary results of three residential building enclosure technologies containing PCM: PCM-enhanced insulation, PCM impregnated drywall and thin PCM layers. The results are compared based on predicted peak reduction and energy savings using two algorithms in EnergyPlus: the PCM and Conduction Finite Difference (CondFD) algorithms.
C1 [Tabares-Velasco, Paulo Cesar; Christensen, Craig; Bianchi, Marcus V. A.] Natl Renewable Energy Lab, Residential Bldg Res Grp, Golden, CO USA.
RP Tabares-Velasco, PC (reprint author), Natl Renewable Energy Lab, Residential Bldg Res Grp, Golden, CO USA.
NR 21
TC 1
Z9 1
U1 0
U2 6
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 90
EP 97
PN 2
PG 8
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100012
ER
PT S
AU Wang, N
Gorrissen, W
Srivastava, V
Taylor, C
AF Wang, Na
Gorrissen, Will
Srivastava, Viraj
Taylor, Cody
GP ASHRAE
TI DOE Commercial Building Energy Asset Rating: An Application of
Centralized Modeling Tool
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
AB This paper presents a novel approach used to develop the U. S. Department of Energy (DOE) commercial building energy asset rating tool. Asset rating, a national standard for a voluntary energy rating system, is intended to help building owners better understand the installed system performance and the total energy use. The asset rating tool allows users to benchmark their buildings against peers and other market players to understand the relative efficiency of different buildings in a way that is distinct from their operations and occupancy. A simplified data collection integrated with full-scale energy-modeling method is employed to disaggregate building energy information and will include a mechanism for identifying energy improvement opportunities. A more detailed modeling approach to formulate an asset rating would most likely provide the greatest and accuracy; while a simplified model approach requires less user investment for collecting data. However, our market research suggested that an asset rating program needs to consider not only the applicability and accuracy across the breadth of commercial buildings but also ease of use. To take the above design drivers into account, we are developing an asset rating tool, a web-based application with a simplified user interface built on an inference engine and a centralized modeling engine. The method presented in this paper separates model inputs into categories based on their overall energy impact, difficulty level of data collection, and variability among buildings. We outline an approach that will allow great flexibility in terms of how many and which of the different categories of variables must be found to produce an accurate energy model. The approach will allow all key variables to be inferred from some reduced set of variables while at the same time allowing a user to enter many more variables if he or she has reliable details on them. The asset rating tool is not just a rating tool, but is aimed at providing a cost-effective means for building owners and operators to gain insight into the energy efficiency potential of their buildings. The development of such a tool enables reduced modeling time and expertise requirements while maintaining accuracy and the ability to support the variability and complexity that exist in buildings.
C1 [Wang, Na; Gorrissen, Will; Srivastava, Viraj] Pacific Northwest Natl Lab, Elect Infrastruct & Bldg Div, Richland, WA 99352 USA.
[Taylor, Cody] Off Energy Efficiency & Renewable Energy US, Dept Energy, Washington, DC USA.
RP Wang, N (reprint author), Pacific Northwest Natl Lab, Elect Infrastruct & Bldg Div, Richland, WA 99352 USA.
NR 15
TC 1
Z9 1
U1 0
U2 0
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 178
EP 188
PN 2
PG 11
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100023
ER
PT S
AU Im, P
Bhandari, M
AF Im, Piljae
Bhandari, Mahabir
GP ASHRAE
TI Use of Flexible Research Platforms (FRP) for BIM and Energy Modeling
Research
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
AB Two light commercial building flexible research platforms (FRP) are being constructed on the Oak Ridge National Laboratory (ORNL) main campus as part of an American Recovery and Reinvestment Act (ARRA) funded project for a Maximum Energy Efficiency Laboratory. The FRPs will offer a unique capability of exposing 'test buildings' to natural weather conditions for purposes of R&D leading to building system and component - level advanced energy efficiency solutions for new and retrofit applications. The platforms provide the opportunity to prove solutions in a low risk environment so they can be deployed with speed and scale in actual commercial buildings. Initially each platform will accommodate one test building with simulated occupancy and miscellaneous electric loads (MELs) to serve as a baseline. The test building will then be modified to test a series of retrofits by replacing building envelope systems and HVAC systems over time. Performance will be monitored with an extensive suite of sensors, with data collected at 15 minute intervals. Comparisons can then be made between the measured performance of the whole building (and its individual components) and the corresponding energy modeling performance. This data will be also used to calibrate the building energy models, validate several EnergyPlus algorithms, and estimate the energy savings pre- and post-retrofit.
This paper introduces two major research areas of the FRP project; 1) Evaluation to facilitate seamless integration of Building Information Modeling (BIM) into building energy models (BEM), and 2) Calibration and validation of the building energy model with the detailed monitoring data. The BIM to BEM evaluation will explore the benefit of forming a direct connection between BIM and energy analysis software. The overall work flow of the integration process, as well as interoperability between BIM and energy analysis software, will be evaluated using existing building simulation packages having import/export capability. In energy modeling research, the modeling of the FRPs, measurement and verification (M&V), and further calibration of models will be investigated. This work could then serve as reference material for the building modeling community and building owners. The calibration - envisaged in this project will serve to generate confidence in the use of energy modeling tools and their predicted energy savings for small commercial buildings. In the long term, accurate modeling and M&V will result in increased energy savings, better data to assess financing for retrofits, as well as more accurate emissions predictions.
C1 [Im, Piljae; Bhandari, Mahabir] Oak Ridge Natl Lab, BTRIC, Oak Ridge, TN USA.
RP Im, P (reprint author), Oak Ridge Natl Lab, BTRIC, Oak Ridge, TN USA.
OI Bhandari, Mahabir/0000-0003-1951-9876
NR 12
TC 0
Z9 0
U1 3
U2 16
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 197
EP 204
PN 2
PG 8
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100025
ER
PT S
AU Ridouane, E
AF Ridouane, El Hassan
GP ASHRAE
TI Evaluation of Thermal Comfort in Low Load Homes Supplied by High
Sidewall Air Jets
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
ID FLUID-DYNAMICS CFD; PERFORMANCE; DIFFUSION; INDUSTRY; SYSTEMS; DESIGN;
MODELS; FLOW
AB Mixing of conditioned air with room air is an essential factor for uniform comfort in homes. This can be achieved by creating the correct combination of temperature and air motion in the occupied zone. Discomfort e caused by excessive air motion, excessive room air temperature variations, or failure to deliver or distribute air according to load requirements. Effective mixing is even more challenging in low load homes with downsized HVAC systems because the design flow rates are lower.
We used computational fluid dynamics modeling to evaluate the performance of high sidewall air supply for residential applications in heating mode, and varied the supply velocity and supply temperature. We considered two cog figurations. corresponding to an unfurnished and a furnished room and compared the results, then evaluated thermal comfort by determining the air diffusion performance index (ADPI). The higher the ADPI value, the more comfortable the space is for most occupants. High sidewall supply inlets can achieve good mixing and provide acceptable comfort levels. Recommendations are given for the system operating conditions to increase comfort.
C1 Natl Renewable Energy Lab, Residential Bldg Res Grp, Golden, CO USA.
RP Ridouane, E (reprint author), Natl Renewable Energy Lab, Residential Bldg Res Grp, Golden, CO USA.
NR 16
TC 0
Z9 0
U1 0
U2 1
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 322
EP 329
PN 2
PG 8
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100041
ER
PT S
AU Fumo, N
Mago, PJ
Kozubal, E
AF Fumo, Nelson
Mago, Pedro J.
Kozubal, Eric
GP ASHRAE
TI Selection of Desiccant Equipment at Altitude
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
ID SYSTEMS
AB ASHRAE Standard 139 provides parameters which are used in the desiccant industry to calculate the performance of a desiccant dehumidifier. These performance parameters can be obtained from any manufacturer by means of performance curves or selection software. However, solid desiccant dehumidifiers are generally rated at standard (sea level) conditions. Although some manufacturers provide a means for estimating the performance at altitude based on standard conditions, there is no methodology that is accepted by all. The scope of this paper involves investigating how performance parameters such as the moisture removal capacity (MRC), regeneration specific heat input (RSHI), process outlet temperature, and pressure drop through the wheel are affected by altitude and developing a 'simple methodology' that can be applied to any desiccant wheel to estimate these performance parameters. For development and validation of the methodology, data was obtained by testing a test cassette at Mississippi State University and the National Renewable Energy Laboratory.
C1 [Fumo, Nelson] Univ Texas Tyler, Dept Mech Engn, Tyler, TX 75799 USA.
[Mago, Pedro J.] Mississippi State Univ, Dept Mech Engn, Mississippi State, MS USA.
[Kozubal, Eric] Natl Renewable Energy Lab, Elect Resources & Bldg Syst Integrat, Golden, CO USA.
RP Fumo, N (reprint author), Univ Texas Tyler, Dept Mech Engn, Tyler, TX 75799 USA.
FU ASHRAE; National Renewable Energy Laboratory (NREL)
FX Support from ASHRAE and the National Renewable Energy Laboratory (NREL)
is gratefully acknowledged. The authors also want to recognize the
contributions of Kenneth Jacobs as graduate student participating in
this research project.
NR 16
TC 0
Z9 0
U1 0
U2 0
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 531
EP 555
PN 2
PG 25
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100061
ER
PT S
AU Boudreaux, PR
Gehl, AC
Christian, JE
AF Boudreaux, Philip R.
Gehl, Anthony C.
Christian, Jeffrey E.
GP ASHRAE
TI Occupancy Simulation in Three Residential Research Houses
SO ASHRAE TRANSACTIONS 2012, VOL 118, PT 2
SE ASHRAE Transactions
LA English
DT Proceedings Paper
CT Annual Annual Conference of the
American-Society-of-Heating-Refrigerating-and-Air-Conditioning-Engineers
(ASHRAE)
CY JUN 23-27, 2012
CL San Antonio, TX
SP Amer Soc Heating Refrigerating & Air Conditioning Engineers (ASHRAE)
AB Three houses of similar floor plan are being compared for energy consumption. The first house is a typical builder house of 2400 ft(2) (223 m(2)) in east Tennessee. The second house contains retrofits available to a home owner such as energy efficient appliances, windows and air-to-air heat pump, as well as an insulated attic which contains the duct work. The third house was built using optimum-value framing construction with photovoltaic modules and solar water heating. To simulate typical occupant energy consumption researchers have set up appliances, lights, and plug loads to turn on and off automatically according to a schedule based on the Building America Research Benchmark Definition. As energy efficiency continues to be a focus for protecting the environment, national security, and conserving resources, experiments involving whole house energy consumption have shown to be extremely valuable toward filling the need for real field performance data without the enormous variability that comes with occupant behavior. This paper describes how to simulate the same average American family living in each of these research houses. The process for achieving automated occupancy simulation will be discussed and the performance of the occupancy simulation system over the 2010 calendar year will be diagnosed. Data comparing the energy use of each house will be presented and it will be shown that the second house used 37% less and the third house used 67% less energy than the control house in 2010. It will also be shown how an energy saving family can further decrease energy use in the third house to 73% less over the control house occupied by an average American family.
C1 [Boudreaux, Philip R.; Gehl, Anthony C.; Christian, Jeffrey E.] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA.
RP Boudreaux, PR (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA.
NR 5
TC 2
Z9 2
U1 0
U2 4
PU AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS
PI ATLANTA
PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA
SN 0001-2505
J9 ASHRAE TRAN
PY 2012
VL 118
BP 625
EP 637
PN 2
PG 13
WC Thermodynamics; Construction & Building Technology
SC Thermodynamics; Construction & Building Technology
GA BDC77
UT WOS:000312673100067
ER
PT S
AU Bresee, JC
Griffith, AR
Collins, ED
Jubin, RT
DelCul, GD
AF Bresee, J. C.
Griffith, A. R.
Collins, E. D.
Jubin, R. T.
DelCul, G. D.
BE Poinssot, C
TI Chemical Pre-Treatment of Used Fuel for Long-Term Storage
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
DE extended storage; used fuel; degradation; pre-treatment; decladding;
voloxidation; off-gas collection; densification
AB Repository programs throughout the world have been slowed by the need for increased local public involvement in the siting and licensing process. The result has been an increase in the dry storage of used fuel at reactor sites and the potential that such storage may be extended for many decades, even centuries. While there are sound technical reasons to believe that dry storage can be conducted safely, there are increasing concerns that the ultimate transfer to either a future repository or a centralized separations plant may result in fractured cladding and serious handling issues, including criticality concerns. These concerns would be increased for higher burn-up fuels. Currently, various chemical pre-treatment processes under R&D for application to commercial used oxide fuel have been investigated at the laboratory scale as methods to simplify and increase the safety of the remaining stages of conventional solvent extraction processing. This includes advanced decladding methods and various oxidation/reduction processes designed to release volatile and semi-volatile fission products, produce finely divided uranium oxide powder, and ameliorate the subsequent nitric acid dissolution step. The paper examines the potential for combining several chemical and physical pre-treatment steps to minimize long-term concerns about safe transport of used fuel, possibly providing another option for future nuclear waste management. Laboratory data from both cold and hot testing will provide the basis for the evaluation. An example of a potential pre-treatment process includes shearing, advanced voloxidation and off-gas treatment, the possible mixing of the resulting uranium oxide with a secondary oxide, and densification and recanning in nitric acid-soluble storage containers for extended time periods. Chemical decladding may be feasible to replace shearing. Zirconium recycle may also be feasible, significantly reducing high level waste quantities. Both analytic and experimental data will be applied to the examination of this potential fuel cycle option. (C) 2012 Elsevier B. V ... Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Bresee, J. C.; Griffith, A. R.] US DOE, Off Nucl Energy, 1000 Independence Ave SW, Washington, DC 20585 USA.
[Collins, E. D.; Jubin, R. T.; DelCul, G. D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Bresee, JC (reprint author), US DOE, Off Nucl Energy, 1000 Independence Ave SW, Washington, DC 20585 USA.
EM james.bresee@nuclear.energy.gov
FU UT- Battelle LLC under U. S. Department of Energy [DE- AC05- 00OR22725]
FX This manuscript has been authored by UT- Battelle LLC under Contract No.
DE- AC05- 00OR22725 with the U. S. Department of Energy. The United
States Government retains and the publisher, by accepting the article
for publication, acknowledges that the United States Government retains
a non- exclusive, paid- up, irrevocable, world- wide license to publish
or reproduce the published form of this manuscript, or allow others to
do so, for United States Government purposes.
NR 5
TC 2
Z9 2
U1 2
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 66
EP 71
DI 10.1016/j.proche.2012.10.012
PG 6
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500010
ER
PT S
AU Collins, ED
DelCul, GD
Spencer, BB
Brunson, RR
Johnson, JA
Terekhov, DS
Emmanuel, NV
AF Collins, E. D.
DelCul, G. D.
Spencer, B. B.
Brunson, R. R.
Johnson, J. A.
Terekhov, D. S.
Emmanuel, N. V.
BE Poinssot, C
TI Process Development Studies for Zirconium Recovery/Recycle from Used
Nuclear Fuel Cladding
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
DE development; recycle; zirconium; cladding; chlorination
AB Process development studies are being done to recover and reuse zirconium from used nuclear fuel (UNF) zirconium alloy cladding. This has been shown to be economically viable and is a major initiative in waste reduction. The studies have included recovery processes based on dry pyrochemical iodination, chlorination, and hydrochlorination. Chlorination, using either or both chlorine and hydrogen chloride, was shown to provide better performance and is more compatible for interfacing with existing industrial chlorination processes used for fuel rod cladding manufacture from natural zirconium. The chlorination recovery process could be used for chemical decladding of intact UNF assemblies or for treatment of empty cladding segment hulls. Future work is planned to optimize recovery process conditions, equipment design, and scale-up operations. (C) 2012 Elsevier B.V. .. Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Collins, E. D.; DelCul, G. D.; Spencer, B. B.; Brunson, R. R.; Johnson, J. A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
[Terekhov, D. S.; Emmanuel, N. V.] Chem Vapor Met Recovery Inc, Oak Ridge, TN USA.
RP Collins, ED (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
FU UT- Battelle LLC under with the U. S. Department of Energy [DE- AC05-
00OR22725]
FX This manuscript has been authored by UT- Battelle LLC under Contract No.
DE- AC05- 00OR22725 with the U. S. Department of Energy. The United
States Government retains and the publisher, by accepting the article
for publication, acknowledges that the United States Government retains
a non- exclusive, paid- up, irrevocable, world- wide license to publish
or reproduce the published form of this manuscript, or allow others to
do so, for United States Government purposes.
NR 2
TC 7
Z9 7
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 72
EP 76
DI 10.1016/j.proche.2012.10.013
PG 5
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500011
ER
PT S
AU Gray, M
Zalupski, P
Nilsson, M
AF Gray, Michael
Zalupski, Peter
Nilsson, Mikael
BE Poinssot, C
TI Activity coefficients of di-(2-ethylhexyl) phosphoric acid in select
diluents
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
DE Di-(2-ethylhexyl) Phosphoric acid; DEHPA; HDEHP; Activity Coefficients
ID VAPOR-PRESSURE OSMOMETRY; REFERENCE SOLUTES; ORGANIC-SOLVENTS;
SELF-ASSOCIATION; EXTRACTION; AGGREGATION; SYSTEMS; HEXANE
AB This work characterizes the non-ideal behavior of the solvent extraction agent di-(2-ethylhexyl) phosphoric acid (HDEHP), constituting one piece of an effort to develop increasingly accurate models of advanced fuel separation processes such as TALSPEAK. Robust models are particularly important for processing high-level radioactive material in order to minimize the generation of secondary waste and to ensure reliable process control. Here, vapor pressure osmometry (VPO) data on binary solutions of HDEHP in toluene, dodecane, or cyclooctane yields the activity coefficients for each component after analysis. Initially, diluent activity data is obtained using the VPO results and then modeled using Scatchard-Hildebrand theory to provide the activity coefficients for HDEHP. (C) 2012 Elsevier B.V ... Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Gray, Michael; Nilsson, Mikael] Univ Calif Irvine, 916 Engn Tower, Irvine, CA 92697 USA.
[Zalupski, Peter] Idaho Natl Lab, Acqueous Separat & Radiochem Dep, Idaho Falls, ID 83415 USA.
RP Nilsson, M (reprint author), Univ Calif Irvine, 916 Engn Tower, Irvine, CA 92697 USA.
EM Nilssonm@uci.edu
FU Idaho National Laboratory; Fuel Cycle Research and Development program
(FCRD); U.S. DOE; Office of Nuclear Energy
FX Work was supported under subcontract number 107827 with the Idaho
National Laboratory, Fuel Cycle Research and Development program
(FCR&D), U.S. DOE, Office of Nuclear Energy.
NR 17
TC 1
Z9 1
U1 0
U2 8
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 209
EP 214
DI 10.1016/j.proche.2012.10.035
PG 6
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500032
ER
PT S
AU Mariani, RD
Porter, DL
Hayes, SL
Kennedy, JR
AF Mariani, Robert D.
Porter, Douglas L.
Hayes, Steven L.
Kennedy, J. Rory
BE Poinssot, C
TI Metallic Fuels: The EBR-II legacy and recent advances
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
DE metallic fuels; alloy stabilization; high burnup; electrorefining
ID CONSTITUENT REDISTRIBUTION; NUCLEAR-FUEL; URANIUM; LANTHANIDES
AB Experimental Breeder Reactor - II (EBR-II) metallic fuel was qualified for high burnup to approximately 10 atomic per cent. Subsequently, the electrometallurgical treatment of this fuel was demonstrated. Advanced metallic fuels are now investigated for increased performance, including ultra-high burnup and actinide burning. Advances include additives to mitigate the fuel/cladding chemical interaction and uranium alloys that combine Mo, Ti and Zr to improve alloy performance. The impacts of the advances-on fabrication, waste streams, electrorefining, etc.-are found to be minimal and beneficial. Owing to extensive research literature and computational methods, only a modest effort is required to complete their development. (C) 2012 Elsevier B.V...Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Mariani, Robert D.; Porter, Douglas L.; Hayes, Steven L.; Kennedy, J. Rory] Idaho Natl Lab, Idaho Falls, ID 83404 USA.
RP Kennedy, JR (reprint author), Idaho Natl Lab, Idaho Falls, ID 83404 USA.
EM robert.mariani@inl.gov
RI Hayes, Steven/D-8373-2017
OI Hayes, Steven/0000-0002-7583-2069
NR 31
TC 4
Z9 4
U1 1
U2 9
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 513
EP 520
DI 10.1016/j.proche.2012.10.078
PG 8
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500075
ER
PT S
AU Kraiem, M
Mathew, KJ
Essex, RM
AF Kraiem, M.
Mathew, K. J.
Essex, R. M.
BE Poinssot, C
TI Comparison of NBL CRM 112-A and Ampoulated Uranyl Nitrate Solution by
TIMS Analysis: Initial Verification of a Potential Normal Uranium
Isotope-Amount Ratio Reference Material
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
DE Normal uranium; Isotope-amount ratio; Reference material; Thermal
ionization mass spectrometry; Modified total evaporation
ID IONIZATION MASS-SPECTROMETRY; FRACTIONATION; U-238/U-235; ABUNDANCE;
PLUTONIUM; SAMPLES
AB An ampoulated uranyl nitrate solution has been compared with NBL CRM 112-A for isotopic-amount ratios as initial verification work for a future mass spectrometry-specific Normal Uranium (NU) reference material. Randomly selected ampoules of the NU solution were analyzed to assess homogeneity of the production run. The comparison analyses were performed by TIMS using Total Evaporation (TE) and Modified Total Evaporation (MTE) methods. No difference was found for the n(U-235)/n(U-238) and n(U-234)/n(U-238) isotope-amount ratios between the NU solution and the CRM 112-A material. Moreover, the NU solutions appear to be isotopically homogenous with no statistically significant unit-to-unit difference observed. (C) 2012 The Authors. Published by Elsevier B.V...Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Kraiem, M.; Mathew, K. J.; Essex, R. M.] New Brunswick Lab, Dept Energy, Argonne, IL 60439 USA.
RP Kraiem, M (reprint author), New Brunswick Lab, Dept Energy, 9800 S Cass Ave, Argonne, IL 60439 USA.
EM monia.kraiem@ch.doe.gov
NR 15
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 691
EP 696
DI 10.1016/j.proche.2012.10.105
PG 6
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500102
ER
PT S
AU Schwantes, JM
Bryan, SA
Orton, CR
Levitskaia, TG
Pratt, SH
Fraga, CG
Coble, JB
AF Schwantes, J. M.
Bryan, S. A.
Orton, C. R.
Levitskaia, Tatiana G.
Pratt, S. H.
Fraga, C. G.
Coble, J. B.
BE Poinssot, C
TI Advanced process monitoring safeguards technologies at Pacific Northwest
National Laboratory
SO ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR
SUSTAINABLE FUEL CYCLES
SE Procedia Chemistry
LA English
DT Proceedings Paper
CT International Conference on Nuclear Chemistry for Sustainable Fuel
Cycles (ATALANTE)
CY SEP 03-07, 2012
CL Montpellier, FRANCE
SP French Alternat Energy & Atom Energy Commiss (CEA), ACSEPT, ASGARD, ACTINET-I3, Seventh Framework Programme (FP7), EDF, Grp ONET, AREVA, Reg Languedoc Roussillon
ID AQUEOUS PERCHLORATE SOLUTIONS; CATION CATION COMPLEXES; PENTAVALENT
ACTINIDES; RAMAN
AB There is a renewed interest worldwide to promote the use of nuclear power and close the nuclear fuel cycle. The long term successful use of nuclear power is critically dependent upon adequate and safe processing and disposition of the spent nuclear fuel. Liquid-liquid extraction is a separation technique commonly employed for the processing of the dissolved spent nuclear fuel. The instrumentation used to monitor these processes must be robust, require little or no maintenance, and be able to withstand harsh environments such as high radiation fields and aggressive chemical matrices. In addition, the ability for continuous on-line monitoring allows for numerous benefits. Researchers from Pacific Northwest National Laboratory (PNNL) are developing three non-destructive assay technologies designed to meet safeguards needs at reprocessing facilities in the future, providing the ability to monitor these activities autonomously, continuously, and in near-real-time (NRT). Raman and spectrophotometric techniques are being evaluated for on-line real-time monitoring of the U(VI)/nitrate ion/nitric acid and Pu(IV)/Np(V)/Nd(III), respectively. Both techniques demonstrated robust performance in the repetitive batch measurements of each analyte in a wide concentration range. Static spectroscopic measurements serve as training sets for the multivariate data analysis to obtain partial least squares predictive models. These models have been validated using on-line centrifugal contactor extraction tests. Another technology being developed is the Multi-Isotope Process (MIP) Monitor, which relies on the collection and NRT multivariate analysis of gamma spectra taken at discrete locations within a recycling facility. Using PCA (principal components analysis) or another multivariate technique, it is possible to automatically compare spectral patterns from the gamma-emitting constituents in process streams for statistically relevant signs of changes in the process chemistry or dissolved fuel characteristics in NRT. The MIP monitor is designed to identify small changes in the gamma ray spectra over time emanating from process streams that may indicate an unplanned change in process conditions. These "off-normal" conditions may be caused by incidental upsets within the system or may indicate something more serious, such as an intentional effort to divert special nuclear material for the system by altering process conditions. Initial simulations and experiments have illustrated the MIP monitor's ability to detect and identify changes in process streams through gamma spectra. (C) 2012 Elsevier B.V...Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
C1 [Schwantes, J. M.; Bryan, S. A.; Orton, C. R.; Levitskaia, Tatiana G.; Pratt, S. H.; Fraga, C. G.; Coble, J. B.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Schwantes, JM (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
NR 27
TC 1
Z9 2
U1 0
U2 4
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1876-6196
J9 PROCEDIA CHEM
PY 2012
VL 7
BP 716
EP 724
DI 10.1016/j.proche.2012.10.109
PG 9
WC Chemistry, Analytical; Chemistry, Inorganic & Nuclear; Energy & Fuels;
Nuclear Science & Technology
SC Chemistry; Energy & Fuels; Nuclear Science & Technology
GA BDC56
UT WOS:000312637500106
ER
PT J
AU Min, Q
Joseph, E
Lin, Y
Min, L
Yin, B
Daum, PH
Kleinman, LI
Wang, J
Lee, YN
AF Min, Q.
Joseph, E.
Lin, Y.
Min, L.
Yin, B.
Daum, P. H.
Kleinman, L. I.
Wang, J.
Lee, Y. -N.
TI Comparison of MODIS cloud microphysical properties with in-situ
measurements over the Southeast Pacific
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID VOCALS-REX; BOUNDARY-LAYER; MARINE STRATOCUMULUS; VARIABILITY; RADIUS
AB Utilizing the unique characteristics of the cloud over the Southeast Pacific (SEP) off the coast of Chile during the VOCALS field campaign, we compared satellite remote sensing of cloud microphysical properties against in-situ data from multi-aircraft observations, and studied the extent to which these retrieved properties are sufficiently constrained and consistent to reliably quantify the influence of aerosol loading on cloud droplet sizes. After constraining the spatial-temporal coincidence between satellite retrievals and in-situ measurements, we selected 17 non-drizzle comparison pairs. For these cases the mean aircraft profiling times were within one hour of Terra overpasses at both projected and un-projected (actual) aircraft positions for two different averaging domains of 5 km and 25 km. Retrieved quantities that were averaged over a larger domain of 25 km compared better statistically with in-situ observations than averages over a smaller domain of 5 km. Comparison at projected aircraft positions was slightly better than un-projected aircraft positions for some parameters. Overall, both MODIS-retrieved effective radius and LWP were larger but highly correlated with the in-situ measured effective radius and LWP, e. g., for averaging domains of 5 km, the biases are up to 1.75 mu m and 0.02 mm whilst the correlation coefficients are about 0.87 and 0.85, respectively. The observed effective radius difference between the two decreased with increasing cloud drop number concentration (CDNC), and increased with increasing cloud geometrical thickness. Compared to the absolute effective radius difference, the correlations between the relative effective radius difference and CDNC or cloud geometric thickness are weaker. For averaging domains of 5 km and 25 km, the correlation coefficients between MODIS-retrieved and in-situ measured CDNC are 0.91 and 0.93 with fitting slopes of 1.23 and 1.27, respectively. If the cloud adiabaticity is taken into account, better agreements are achieved for both averaging domains (the fitting slopes are 1.04 and 1.07, respectively). Our comparison and sensitivity analysis of simulated retrievals demonstrate that both cloud geometrical thickness and cloud adiabaticity are important factors in satellite retrievals of effective radius and cloud drop number concentration. The large variabilities in cloud geometrical thickness and adiabaticity, the dependencies of cloud microphysical properties on both quantities (as demonstrated in our sensitivity study of simulated retrievals), and the inability to accurately account for either of them in retrievals lead to some uncertainties and biases in satellite retrieved cloud effective radius, cloud liquid water path, and cloud drop number concentration. However, strong correlations between satellite retrievals and in-situ measurements suggest that satellite retrievals of cloud effective radius, cloud liquid water path, and cloud drop number concentration can be used to investigate aerosol indirect effects qualitatively.
C1 [Min, Q.; Lin, Y.; Min, L.; Yin, B.] SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12222 USA.
[Joseph, E.] Howard Univ, NOAA Ctr Atmospher Sci, Washington, DC 20059 USA.
[Daum, P. H.; Kleinman, L. I.; Wang, J.; Lee, Y. -N.] Brookhaven Natl Lab, Div Atmospher Sci, Upton, NY 11973 USA.
RP Min, Q (reprint author), SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12222 USA.
EM qmin@albany.edu
RI Wang, Jian/G-9344-2011
FU US Department of Energy Brookhaven National Laboratory; US DOE's
Atmospheric System Research program (Office of Science, OBER)
[DE-FG02-03ER63531]; NSF [AGS-1138495]; NOAA Educational Partnership
Program with Minority Serving Institutions (EPP/MSI) [NA17AE1625,
NA17AE1623]; [DE-AC02-98CH10886]
FX This work was supported by the US Department of Energy Brookhaven
National Laboratory and US DOE's Atmospheric System Research program
(Office of Science, OBER) under contract DE-FG02-03ER63531, by the NSF
under contract AGS-1138495, and by the NOAA Educational Partnership
Program with Minority Serving Institutions (EPP/MSI) under cooperative
agreements NA17AE1625 and NA17AE1623; contributions from PHD, LIK, JW,
and YNL were supported by DE-AC02-98CH10886.
NR 25
TC 17
Z9 17
U1 0
U2 15
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 23
BP 11261
EP 11273
DI 10.5194/acp-12-11261-2012
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WK
UT WOS:000312665300002
ER
PT J
AU Yu, F
Luo, G
Liu, X
Easter, RC
Ma, X
Ghan, SJ
AF Yu, F.
Luo, G.
Liu, X.
Easter, R. C.
Ma, X.
Ghan, S. J.
TI Indirect radiative forcing by ion-mediated nucleation of aerosol
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID COMMUNITY ATMOSPHERE MODEL; SULFURIC-ACID; CLOUD MICROPHYSICS; PARTICLE
FORMATION; VERSION-3 CAM3; COSMIC-RAYS; WATER; PARAMETERIZATION;
CLIMATOLOGY; SENSITIVITY
AB A clear understanding of particle formation mechanisms is critical for assessing aerosol indirect radiative forcing and associated climate feedback processes. Recent studies reveal the importance of ion-mediated nucleation (IMN) in generating new particles and cloud condensation nuclei (CCN) in the atmosphere. Here we implement the IMN scheme into the Community Atmosphere Model version 5 (CAM5). Our simulations show that, compared to globally averaged results based on H2SO4-H2O binary homogeneous nucleation (BHN), the presence of ionization (i.e., IMN) halves H2SO4 column burden, but increases the column integrated nucleation rate by around one order of magnitude, total particle number burden by a factor of similar to 3, CCN burden by similar to 10% (at 0.2% supersaturation) to 65% (at 1.0% supersaturation), and cloud droplet number burden by similar to 18 %. Compared to BHN, IMN increases cloud liquid water path by 7.5 %, decreases precipitation by 1.1 %, and increases total cloud cover by 1.9%. This leads to an increase of total shortwave cloud radiative forcing (SWCF) by 3.67 W m(-2) (more negative) and longwave cloud forcing by 1.78 W m(-2) (more positive), with large spatial variations. The effect of ionization on SWCF derived from this study (3.67 W m(-2)) is a factor of similar to 3 higher that of a previous study (1.15 W m(-2)) based on a different ion nucleation scheme and climate model. Based on the present CAM5 simulation, the 5-yr mean impacts of solar cycle induced changes in ionization rates on CCN and cloud forcing are small (similar to-0.02 W m(-2)) but have larger inter-annual (from -0.18 to 0.17 W m(-2)) and spatial variations.
C1 [Yu, F.; Luo, G.; Ma, X.] SUNY Albany, Atmospher Sci Res Ctr, Albany, NY 12203 USA.
[Liu, X.; Easter, R. C.; Ghan, S. J.] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
RP Yu, F (reprint author), SUNY Albany, Atmospher Sci Res Ctr, 251 Fuller Rd, Albany, NY 12203 USA.
EM fangqun.yu@asrc.albany.edu
RI ma, xiaoyan/D-2308-2014; Liu, Xiaohong/E-9304-2011; Yu,
Fangqun/F-3708-2011; Ghan, Steven/H-4301-2011
OI Liu, Xiaohong/0000-0002-3994-5955; Yu, Fangqun/0000-0003-0874-4883;
Ghan, Steven/0000-0001-8355-8699
FU NASA [NNX11AQ72G]; DOE [DE-SC0002199, DE-AC06-76RLO 1830]; NSF
[0942106]; U.S. Department of Energy, Office of Science, Scientific
Discovery through Advanced Computing (SciDAC) Program; Office of Science
Earth System Modeling Program
FX This work is supported by NASA under grant NNX11AQ72G, DOE under grant
DE-SC0002199 and NSF under grant 0942106. X. Liu, R. Easter and S. Ghan,
were funded by the U.S. Department of Energy, Office of Science,
Scientific Discovery through Advanced Computing (SciDAC) Program and by
the Office of Science Earth System Modeling Program. The Pacific
Northwest National Laboratory is operated for DOE by Battelle Memorial
Institute under contract DE-AC06-76RLO 1830.
NR 48
TC 13
Z9 15
U1 0
U2 19
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 23
BP 11451
EP 11463
DI 10.5194/acp-12-11451-2012
PG 13
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WK
UT WOS:000312665300014
ER
PT J
AU Pringle, KJ
Carslaw, KS
Fan, T
Mann, GW
Hill, A
Stier, P
Zhang, K
Tost, H
AF Pringle, K. J.
Carslaw, K. S.
Fan, T.
Mann, G. W.
Hill, A.
Stier, P.
Zhang, K.
Tost, H.
TI A multi-model assessment of the impact of sea spray geoengineering on
cloud droplet number
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID MARINE STRATOCUMULUS CLOUDS; AEROSOL MICROPHYSICS MODEL; GLOBAL CLIMATE
MODELS; LARGE-EDDY SIMULATION; BOUNDARY-LAYER; CONDENSATION NUCLEI;
ALBEDO-ENHANCEMENT; SOUTHEAST PACIFIC; SHIP TRACKS; VOCALS-REX
AB Artificially increasing the albedo of marine boundary layer clouds by the mechanical emission of sea spray aerosol has been proposed as a geoengineering technique to slow the warming caused by anthropogenic greenhouse gases. A previous global model study (Korhonen et al., 2010) found that only modest increases (<20 %) and sometimes even decreases in cloud drop number (CDN) concentrations would result from emission scenarios calculated using a windspeed dependent geoengineering flux parameterisation. Here we extend that work to examine the conditions under which decreases in CDN can occur, and use three independent global models to quantify maximum achievable CDN changes. We find that decreases in CDN can occur when at least three of the following conditions are met: the injected particle number is < 100 cm(-3), the injected diameter is > 250-300 nm, the background aerosol loading is large (>= 150 cm(-3)) and the in-cloud updraught velocity is low (< 0.2 m s(-1)). With lower background loadings and/or increased updraught velocity, significant increases in CDN can be achieved. None of the global models predict a decrease in CDN as a result of geoengineering, although there is considerable diversity in the calculated efficiency of geoengineering, which arises from the diversity in the simulated marine aerosol distributions. All three models show a small dependence of geoengineering efficiency on the injected particle size and the geometric standard deviation of the injected mode. However, the achievability of significant cloud drop enhancements is strongly dependent on the cloud updraught speed. With an updraught speed of 0.1 m s(-1) a global mean CDN of 375 cm-3 (previously estimated to cancel the forcing caused by CO2 doubling) is achievable in only about 50% of grid boxes which have > 50% cloud cover, irrespective of the amount of aerosol injected. But at stronger updraft speeds (0.2 m s(-1)), higher values of CDN are achievable due to the elevated in-cloud supersaturations. Achieving a value of 375 cm(-3) in regions dominated by stratocumulus clouds with relatively weak updrafts cannot be attained regardless of the number of injected particles, thereby limiting the efficacy of sea spray geoengineering.
C1 [Pringle, K. J.; Carslaw, K. S.; Fan, T.; Mann, G. W.] Univ Leeds, Inst Climate & Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England.
[Hill, A.] UK Met Off, Exeter, Devon, England.
[Stier, P.] Univ Oxford, Oxford OX1 2JD, England.
[Zhang, K.] Max Planck Inst Meteorol, Hamburg, Germany.
[Zhang, K.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Tost, H.] Johannes Gutenberg Univ Mainz, D-6500 Mainz, Germany.
RP Pringle, KJ (reprint author), Univ Leeds, Inst Climate & Atmospher Sci, Leeds LS2 9JT, W Yorkshire, England.
EM kirsty@env.leeds.ac.uk
RI Carslaw, Ken/C-8514-2009; Zhang, Kai/F-8415-2010; Stier,
Philip/B-2258-2008; Tost, Holger/C-3812-2017
OI Carslaw, Ken/0000-0002-6800-154X; Zhang, Kai/0000-0003-0457-6368; Stier,
Philip/0000-0002-1191-0128; Tost, Holger/0000-0002-3105-4306
FU Geoengineering Programme of the Oxford Martin School
FX We thank the AeroCom aerosol model inter-comparison project for the
provision of the global model data used in this study and the
development team behind each model. We also thanks A. Nenes for
provision of the activation parametrisation code, H. Korhonen for
provision of model data and useful discussion and Adrian Lock for
provision of the ASTEX simulation diagnostics. P. Stier has been
supported by the Geoengineering Programme of the Oxford Martin School.
NR 57
TC 10
Z9 10
U1 2
U2 26
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 23
BP 11647
EP 11663
DI 10.5194/acp-12-11647-2012
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WK
UT WOS:000312665300026
ER
PT J
AU Kajino, M
Inomata, Y
Sato, K
Ueda, H
Han, Z
An, J
Katata, G
Deushi, M
Maki, T
Oshima, N
Kurokawa, J
Ohara, T
Takami, A
Hatakeyama, S
AF Kajino, M.
Inomata, Y.
Sato, K.
Ueda, H.
Han, Z.
An, J.
Katata, G.
Deushi, M.
Maki, T.
Oshima, N.
Kurokawa, J.
Ohara, T.
Takami, A.
Hatakeyama, S.
TI Development of the RAQM2 aerosol chemical transport model and
predictions of the Northeast Asian aerosol mass, size, chemistry, and
mixing type
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID DRY DEPOSITION SCHEME; EAST-ASIA; AIR-QUALITY; MIYAKEJIMA VOLCANO; DATA
ASSIMILATION; BOUNDARY-LAYER; LEAF-AREA; PARAMETERIZATION; EMISSIONS;
PRODUCTS
AB A new aerosol chemical transport model, the Regional Air Quality Model 2 (RAQM2), was developed to simulate the Asian air quality. We implemented a simple version of a triple-moment modal aerosol dynamics model (MADMS) and achieved a completely dynamic (non-equilibrium) solution of a gas-to-particle mass transfer over a wide range of aerosol diameters from 1 nm to super-mu m. To consider a variety of atmospheric aerosol properties, a category approach was utilized in which the aerosols were distributed into four categories: particles in the Aitken mode (ATK), soot-free particles in the accumulation mode (ACM), soot aggregates (AGR), and particles in the coarse mode (COR). The aerosol size distribution in each category is characterized by a single mode. The condensation, evaporation, and Brownian coagulations for each mode were solved dynamically. A regional-scale simulation (Delta x = 60 km) was performed for the entire year of 2006 covering the Northeast Asian region. The modeled PM1/bulk ratios of the chemical components were consistent with observations, indicating that the simulated aerosol mixing types were consistent with those in nature. The non-sea-salt SO42- mixed with ATK + ACM was the largest at Hedo in summer, whereas the SO42- was substantially mixed with AGR in the cold seasons. Ninety-eight percent of the modeled NO3- was mixed with sea salt at Hedo, whereas 53.7% of the NO3- was mixed with sea salt at Gosan, which is located upwind toward the Asian continent. The condensation of HNO3 onto sea salt particles during transport over the ocean accounts for the difference in the NO3- mixing type at the two sites. Because the aerosol mixing type alters the optical properties and cloud condensation nuclei activity, its accurate prediction and evaluation are indispensable for aerosol-cloud-radiation interaction studies.
C1 [Kajino, M.; Deushi, M.; Maki, T.; Oshima, N.] Japan Meteorol Agcy, Meteorol Res Inst, Tsukuba, Ibaraki 3050052, Japan.
[Kajino, M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Inomata, Y.; Sato, K.; Kurokawa, J.] Asia Ctr Air Pollut Res, Nishi Ku, Niigata 9502144, Japan.
[Ueda, H.] Toyohashi Inst Technol, Tempaku Ku, Toyohashi, Aichi 9502144, Japan.
[Han, Z.; An, J.] Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China.
[Katata, G.] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan.
[Ohara, T.; Takami, A.] Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan.
[Hatakeyama, S.] Tokyo Univ Agr & Technol, Fuchu, Tokyo 1838509, Japan.
RP Kajino, M (reprint author), Japan Meteorol Agcy, Meteorol Res Inst, 1-1 Nagamine, Tsukuba, Ibaraki 3050052, Japan.
EM kajino@mri-jma.go.jp
RI Oshima, Naga/E-4708-2012; Hatakeyama, Shiro/D-2001-2010
OI Hatakeyama, Shiro/0000-0002-9357-4091
FU Ministry of the Environment of Japan [B-0905, A-1101]; Ministry of
Education, Science, Sports and Culture (MEXT) [23310018]
FX This research was promoted by the Fundamental Research Budget of the
Meteorological Research Institute of Japan, "Studies on Atmospheric
Aerosol Properties and Processes". The study was partly supported by the
Environment Research and Technology Development Fund (Project No. B-0905
and A-1101) of the Ministry of the Environment of Japan and the Ministry
of Education, Science, Sports and Culture (MEXT) Grant-in-Aid for
Scientific Research (B), 23310018, 2011.
NR 73
TC 18
Z9 18
U1 1
U2 7
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 24
BP 11833
EP 11856
DI 10.5194/acp-12-11833-2012
PG 24
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WR
UT WOS:000312666100005
ER
PT J
AU Liu, X
Shi, X
Zhang, K
Jensen, EJ
Gettelman, A
Barahona, D
Nenes, A
Lawson, P
AF Liu, X.
Shi, X.
Zhang, K.
Jensen, E. J.
Gettelman, A.
Barahona, D.
Nenes, A.
Lawson, P.
TI Sensitivity studies of dust ice nuclei effect on cirrus clouds with the
Community Atmosphere Model CAM5
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID UPPER-TROPOSPHERIC CONDITIONS; GENERAL-CIRCULATION MODEL; TROPICAL
TROPOPAUSE LAYER; VERSION 3 CAM3; RELATIVE-HUMIDITY; CLIMATE MODELS;
MICROPHYSICS SCHEME; LOWER STRATOSPHERE; AEROSOL-PARTICLES; WATER-VAPOR
AB In this study the effect of dust aerosol on upper tropospheric cirrus clouds through heterogeneous ice nucleation is investigated in the Community Atmospheric Model version 5 (CAM5) with two ice nucleation parameterizations. Both parameterizations consider homogeneous and heterogeneous nucleation and the competition between the two mechanisms in cirrus clouds, but differ significantly in the number concentration of heterogeneous ice nuclei (IN) from dust. Heterogeneous nucleation on dust aerosol reduces the occurrence frequency of homogeneous nucleation and thus the ice crystal number concentration in the Northern Hemisphere (NH) cirrus clouds compared to simulations with pure homogeneous nucleation. Global and annual mean shortwave and longwave cloud forcing are reduced by up to 2.0 +/- 0.1 W m(-2) (1 sigma uncertainty) and 2.4 +/- 0.1 W m(-2), respectively due to the presence of dust IN, with the net cloud forcing change of -0.40 +/- 0.20 W m(-2). Comparison of model simulations with in situ aircraft data obtained in NH mid-latitudes suggests that homogeneous ice nucleation may play an important role in the ice nucleation at these regions with temperatures of 205-230 K. However, simulations overestimate observed ice crystal number concentrations in the tropical tropopause regions with temperatures of 190-205 K, and overestimate the frequency of occurrence of high ice crystal number concentration (> 200 L-1) and underestimate the frequency of low ice crystal number concentration (< 30 L-1) at NH mid-latitudes. These results highlight the importance of quantifying the number concentrations and properties of heterogeneous IN (including dust aerosol) in the upper troposphere from the global perspective.
C1 [Liu, X.; Shi, X.; Zhang, K.] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
[Shi, X.] Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China.
[Jensen, E. J.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA.
[Gettelman, A.] Natl Ctr Atmospher Res, Boulder, CO 80307 USA.
[Barahona, D.] NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD 20771 USA.
[Barahona, D.] IM Syst Grp, Rockville, MD USA.
[Nenes, A.] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA.
[Nenes, A.] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA.
[Lawson, P.] SPEC Inc, Boulder, CO USA.
RP Liu, X (reprint author), Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA.
EM xiaohong.liu@pnnl.gov
RI Liu, Xiaohong/E-9304-2011; Zhang, Kai/F-8415-2010; Barahona,
Donifan/G-4157-2011
OI Liu, Xiaohong/0000-0002-3994-5955; Zhang, Kai/0000-0003-0457-6368;
FU US Department of Energy (DOE), Office of Science, Atmospheric System
Research (ASR) and Decadal and Regional Climate Prediction using Earth
System Models (EaSM) Programs; NASA Modeling, Analysis and Prediction
Program [WBS 802678.02.17.01.07]; DOE by Battelle Memorial Institute
[DE-AC06-76RLO 1830]
FX Support for X. Liu was provided from the US Department of Energy (DOE),
Office of Science, Atmospheric System Research (ASR) and Decadal and
Regional Climate Prediction using Earth System Models (EaSM) Programs.
Support for Donifan Barahona was provided by the NASA Modeling, Analysis
and Prediction Program under WBS 802678.02.17.01.07. The Pacific
Northwest National Laboratory is operated for DOE by Battelle Memorial
Institute under contract DE-AC06-76RLO 1830.
NR 86
TC 36
Z9 37
U1 1
U2 37
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 24
BP 12061
EP 12079
DI 10.5194/acp-12-12061-2012
PG 19
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WR
UT WOS:000312666100020
ER
PT J
AU Lin, JT
Liu, Z
Zhang, Q
Liu, H
Mao, J
Zhuang, G
AF Lin, J. -T.
Liu, Z.
Zhang, Q.
Liu, H.
Mao, J.
Zhuang, G.
TI Modeling uncertainties for tropospheric nitrogen dioxide columns
affecting satellite-based inverse modeling of nitrogen oxides emissions
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID GAS-PHASE REACTIONS; ATMOSPHERIC CHEMISTRY; UNITED-STATES; NOX
EMISSIONS; PHOTOCHEMICAL DATA; AEROSOL EMISSIONS; CLIMATE MODEL; TRACE
GASES; AIR-QUALITY; INTEX-B
AB Errors in chemical transport models (CTMs) interpreting the relation between space-retrieved tropospheric column densities of nitrogen dioxide (NO2) and emissions of nitrogen oxides (NOx) have important consequences on the inverse modeling. They are however difficult to quantify due to lack of adequate in situ measurements, particularly over China and other developing countries. This study proposes an alternate approach for model evaluation over East China, by analyzing the sensitivity of modeled NO2 columns to errors in meteorological and chemical parameters/processes important to the nitrogen abundance. As a demonstration, it evaluates the nested version of GEOS-Chem driven by the GEOS-5 meteorology and the INTEX-B anthropogenic emissions and used with retrievals from the Ozone Monitoring Instrument (OMI) to constrain emissions of NOx. The CTM has been used extensively for such applications. Errors are examined for a comprehensive set of meteorological and chemical parameters using measurements and/or uncertainty analysis based on current knowledge. Results are exploited then for sensitivity simulations perturbing the respective parameters, as the basis of the following post-model linearized and localized first-order modification. It is found that the model meteorology likely contains errors of various magnitudes in cloud optical depth, air temperature, water vapor, boundary layer height and many other parameters. Model errors also exist in gaseous and heterogeneous reactions, aerosol optical properties and emissions of non-nitrogen species affecting the nitrogen chemistry. Modifications accounting for quantified errors in 10 selected parameters increase the NO2 columns in most areas with an average positive impact of 18% in July and 8% in January, the most important factor being modified uptake of the hydroperoxyl radical (HO2) on aerosols. This suggests a possible systematic model bias such that the top-down emissions will be overestimated by the same magnitude if the model is used for emission inversion without corrections. The modifications however cannot eliminate the large model underestimates in cities and other extremely polluted areas (particularly in the north) as compared to satellite retrievals, likely pointing to underestimates of the a priori emission inventory in these places with important implications for understanding of atmospheric chemistry and air quality. Note that these modifications are simplified and should be interpreted with caution for error apportionment.
C1 [Lin, J. -T.] Peking Univ, Dept Atmospher & Ocean Sci, Sch Phys, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China.
[Liu, Z.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA.
[Zhang, Q.] Tsinghua Univ, Ctr Earth Syst Sci, Beijing 100084, Peoples R China.
[Liu, H.] Natl Inst Aerosp, Hampton, VA 23666 USA.
[Mao, J.] Princeton Univ, Program Atmospher & Ocean Sci, Princeton, NJ 08542 USA.
[Mao, J.] NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08542 USA.
[Zhuang, G.] Fudan Univ, Dept Environm Sci & Engn, Ctr Atmospher Chem Study, Shanghai 200433, Peoples R China.
RP Lin, JT (reprint author), Peking Univ, Dept Atmospher & Ocean Sci, Sch Phys, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China.
EM linjt@pku.edu.cn
RI Lin, Jintai/A-8872-2012; Mao, Jingqiu/F-2511-2010; Chem,
GEOS/C-5595-2014; Zhang, Qiang/D-9034-2012; Liu, Zhen/C-3027-2011; 杨,
宇栋/F-6250-2012
OI Lin, Jintai/0000-0002-2362-2940; Mao, Jingqiu/0000-0002-4774-9751;
FU National Natural Science Foundation of China [41005078, 41175127,
41128005]; MOST, China [2010DFA92230]
FX This research is supported by the National Natural Science Foundation of
China, grant 41005078 and 41175127. The work of G. Zhuang is supported
by the great international collaboration project of MOST, China
(2010DFA92230), National Natural Science Foundation of China (Grant No.
41128005, fund for collaboration with oversea scholars). We acknowledge
the free use of tropospheric NO2 column data from
www.temis.nl, MODIS AOD data from NASA, and meteorological data from
NOAA NCDC and the ISCCP project. We thank Randall V. Martin and Mathew
Evans for useful comments.
NR 80
TC 25
Z9 26
U1 2
U2 45
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 24
BP 12255
EP 12275
DI 10.5194/acp-12-12255-2012
PG 21
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 058WR
UT WOS:000312666100032
ER
PT J
AU Lee, H
Rahn, T
Throop, HL
AF Lee, H.
Rahn, T.
Throop, H. L.
TI A novel source of atmospheric H-2: abiotic degradation of organic
material
SO BIOGEOSCIENCES
LA English
DT Article
ID MOLECULAR-HYDROGEN; CARBON-MONOXIDE; LEAF-LITTER; ULTRAVIOLET-RADIATION;
METHYL-CHLORIDE; UV-RADIATION; PLANT PECTIN; TEMPERATURE; EMISSIONS;
METHANE
AB Molecular hydrogen (H-2) plays an important role in atmospheric chemistry by competing for reactions with the hydroxyl radical (OH center dot) and contributing to the production of H2O in the stratosphere, indirectly influencing stratospheric ozone concentrations. The dominant pathway for loss of H-2 from the atmosphere is via microbially-mediated soil uptake, although the magnitude of this loss is still regarded as highly uncertain. Recent studies have shown that abiotic processes such as photochemically mediated degradation (photodegradation) of organic material result in direct emissions of carbon (C) and nitrogen (N)-based trace gases as well as H-2. This H-2 production has important implications on sourcesink dynamics of H-2 at the soil-atmosphere interface and thus it is important to quantify its variability over a range of plant types and materials. Here, we show laboratory observations of H-2 production and its temperature dependence during abiotic degradation of four plant litter types as well as pure cellulose and high lignin content woody material. A greater amount of H-2 was produced in the absence of solar radiation than from photodegradation alone, verifying that low temperature thermal degradation of plant litter is a source of H-2. In addition, we measured a significant release of H-2 both in the presence and absence of O-2. Our results suggest that abiotic release of H-2 during organic matter degradation is ubiquitous in arid ecosystems and may also occur in other terrestrial ecosystems. We propose that because these processes occur at the soil-atmosphere interface, they provide a previously unrecognized proximal source of H-2 for microbial uptake and confound interpretation of direct measurements of atmospheric uptake that are important for constraining the global H-2 budget.
C1 [Lee, H.] Natl Ctr Atmospher Res, Climate & Global Dynam Div, Boulder, CO 80307 USA.
[Rahn, T.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA.
[Throop, H. L.] New Mexico State Univ, Dept Biol, Las Cruces, NM 88003 USA.
RP Lee, H (reprint author), Natl Ctr Atmospher Res, Climate & Global Dynam Div, POB 3000, Boulder, CO 80307 USA.
EM hannal@ucar.edu
RI Throop, Heather/D-6391-2012; Rahn, Thom/C-5211-2012
OI Throop, Heather/0000-0002-7963-4342; Rahn, Thomas/0000-0001-8634-1348;
FU LANL-NMSU; LANL Institutes; NSF DEB [0815808]
FX This research was funded by a LANL-NMSU Memorandum of Understanding
grant (HLT and TR), the LANL Institutes, and NSF DEB 0815808 to New
Mexico State University (HLT).
NR 36
TC 3
Z9 4
U1 1
U2 21
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1726-4170
J9 BIOGEOSCIENCES
JI Biogeosciences
PY 2012
VL 9
IS 11
BP 4411
EP 4419
DI 10.5194/bg-9-4411-2012
PG 9
WC Ecology; Geosciences, Multidisciplinary
SC Environmental Sciences & Ecology; Geology
GA 058XC
UT WOS:000312667300016
ER
PT J
AU Angert, A
Muhr, J
Juarez, RN
Munoz, WA
Kraemer, G
Santillan, JR
Barkan, E
Mazeh, S
Chambers, JQ
Trumbore, SE
AF Angert, A.
Muhr, J.
Juarez, R. Negron
Alegria Munoz, W.
Kraemer, G.
Ramirez Santillan, J.
Barkan, E.
Mazeh, S.
Chambers, J. Q.
Trumbore, S. E.
TI Internal respiration of Amazon tree stems greatly exceeds external CO2
efflux
SO BIOGEOSCIENCES
LA English
DT Article
ID PLATANUS-OCCIDENTALIS L.; XYLEM SAP; FOREST ECOSYSTEMS; CARBON
ALLOCATION; ATMOSPHERIC O-2; WOODY-TISSUE; OXYGEN; DIFFUSION; TRANSPORT;
ASSIMILATION
AB Respiration in tree stems is an important component of forest carbon balance. The rate of CO2 efflux from the stem has often been assumed to be a measure of stem respiration. However, recent work in temperate forests has demonstrated that stem CO2 efflux can either overestimate or underestimate respiration rate because of emission or removal of CO2 by transport in xylem water. Here, we studied gas exchange from stems of tropical forest trees using a new approach to better understand respiration in an ecosystem that plays a key role in the global carbon cycle. Our main questions were (1) is internal CO2 transport important in tropical trees, and, if so, (2) does this transport result in net release of CO2 respired in the roots at the stem, or does it cause the opposite effect of net removal of stem-respired CO2? To answer these questions, we measured the ratio of stem CO2 efflux to O-2 influx. This ratio, defined here as apparent respiratory quotient (ARQ), is expected to equal 1.0 if carbohydrates are the substrate for respiration, and the net transport of CO2 in the xylem water is negligible. Using a stem chamber approach to quantifying ARQ, we found values of 0.66 +/- 0.18. These low ARQ values indicate that a large portion of respired CO2 (similar to 35 %) is not emitted locally, and is probably transported upward in the stem. ARQ values of 0.21 +/- 0.10 were found for the steady-state gas concentration within the stem, sampled by in-stem equilibration probes. These lower values may result from the proximity to the xylem water stream. In contrast, we found ARQ values of 1.00 +/- 0.13 for soil respiration. Our results indicate the existence of a considerable internal flux of CO2 in the stems of tropical trees. If the transported CO2 is used in the canopy as a substrate for photosynthesis, it could account for up to 10% of the C fixed by the tree, and perhaps serve as a mechanism that buffers the response of the tree to changing CO2 levels. Our results also indicate, in agreement with previous work, that the widely used CO2 efflux approach for determining stem respiration is unreliable. We demonstrate here a field applicable approach for measuring the O-2 uptake rate, which we suggest to be a more appropriate method to estimate stem respiration rates.
C1 [Angert, A.; Barkan, E.; Mazeh, S.] Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel.
[Muhr, J.; Trumbore, S. E.] Max Planck Inst Biogeochem, Dept Biogeochem Proc, D-07745 Jena, Germany.
[Juarez, R. Negron] Tulane Univ, New Orleans, LA 70118 USA.
[Alegria Munoz, W.; Kraemer, G.; Ramirez Santillan, J.] Univ Nacl Amazonia Peruana, Fac Ciencias Forestales, Iquitos, Peru.
[Chambers, J. Q.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Climate Sci Dept, Berkeley, CA 94720 USA.
RP Angert, A (reprint author), Hebrew Univ Jerusalem, Inst Earth Sci, IL-91904 Jerusalem, Israel.
EM angert@gmail.com
RI Trumbore, Susan/B-1948-2013; Chambers, Jeffrey/J-9021-2014;
Negron-Juarez, Robinson/I-6289-2016
OI Chambers, Jeffrey/0000-0003-3983-7847;
FU ISF [870/08]; Ring Foundation
FX The authors thank Menachem Moshelion and Hezi Gildor for fruitful
discussion and Eyal Wurgaft for his help with the O2
analysis. AA was partly supported by ISF grant #870/08 and by Ring
Foundation grant.
NR 46
TC 14
Z9 14
U1 2
U2 51
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1726-4170
J9 BIOGEOSCIENCES
JI Biogeosciences
PY 2012
VL 9
IS 12
BP 4979
EP 4991
DI 10.5194/bg-9-4979-2012
PG 13
WC Ecology; Geosciences, Multidisciplinary
SC Environmental Sciences & Ecology; Geology
GA 058XJ
UT WOS:000312668100006
ER
PT S
AU Rao, NSV
AF Rao, Nageswara S. V.
BE Parashar, M
Kaushik, D
Rana, OF
Samtaney, R
Yang, YY
Zomaya, A
TI Analytical and Experimental Methods for High-Performance Network Testing
SO CONTEMPORARY COMPUTING
SE Communications in Computer and Information Science
LA English
DT Proceedings Paper
CT 5th International Conference on Contemporary Computing
CY AUG 06-08, 2012
CL Jaypee Inst Informat Technol, Noida, INDIA
HO Jaypee Inst Informat Technol
C1 Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Rao, NSV (reprint author), Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
EM raons@ornl.gov
NR 0
TC 0
Z9 0
U1 0
U2 3
PU SPRINGER-VERLAG BERLIN
PI BERLIN
PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY
SN 1865-0929
BN 978-3-642-32128-3
J9 COMM COM INF SC
PY 2012
VL 306
BP 2
EP 2
PG 1
WC Computer Science, Information Systems; Computer Science, Theory &
Methods
SC Computer Science
GA BDB48
UT WOS:000312464300002
ER
PT S
AU Vahsen, SE
Feng, H
Garcia-Sciveres, M
Jaegle, I
Kadyk, J
Nguyen, Y
Rosen, M
Ross, S
Thorpe, T
Yamaoka, J
AF Vahsen, S. E.
Feng, H.
Garcia-Sciveres, M.
Jaegle, I.
Kadyk, J.
Nguyen, Y.
Rosen, M.
Ross, S.
Thorpe, T.
Yamaoka, J.
BE Mayet, F
Santos, D
TI THE DIRECTIONAL DARK MATTER DETECTOR (D-3)
SO CYGNUS 2011: THIRD INTERNATIONAL CONFERENCE ON DIRECTIONAL DETECTION OF
DARK MATTER
SE EAS Publications Series
LA English
DT Proceedings Paper
CT 3rd International Conference on Directional Detection of Dark Matter
CY JUN 08-10, 2011
CL Savoie, FRANCE
SP LPSC Grenoble
AB Gas-filled Time Projection Chambers (TPCs) with Gas Electron Multipliers (GEMs) and pixels appear suitable for direction-sensitive WIMP dark matter searches. We present the background and motivation for our work on this technology, past and ongoing prototype work, and a development path towards an affordable, 1-m(3)-scale directional dark matter detector, D-3. Such a detector may be particularly suitable for low-mass WIMP searches, and perhaps sufficiently sensitive to clearly determine whether the signals seen by DAMA, CoGeNT, and CRESST-II are due to low-mass WIMPs or background.
C1 [Vahsen, S. E.; Feng, H.; Jaegle, I.; Rosen, M.; Ross, S.; Thorpe, T.; Yamaoka, J.] Univ Hawaii, 2505 Correa Rd, Honolulu, HI 96822 USA.
[Garcia-Sciveres, M.; Kadyk, J.; Nguyen, Y.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Vahsen, SE (reprint author), Univ Hawaii, 2505 Correa Rd, Honolulu, HI 96822 USA.
EM sevahsen@hawaii.edu; jaegle@phys.hawaii.edu
NR 18
TC 22
Z9 22
U1 0
U2 1
PU E D P SCIENCES
PI CEDEX A
PA 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A,
FRANCE
SN 1633-4760
BN 978-2-7598-0721-5
J9 EAS PUBLICATIONS
PY 2012
VL 53
BP 43
EP +
DI 10.1051/eas/1253006
PG 2
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDD97
UT WOS:000312878100006
ER
PT J
AU Morozovska, AN
Eliseev, EA
Glinchuk, MD
Chen, LQ
Kalinin, SV
Gopalan, V
AF Morozovska, A. N.
Eliseev, E. A.
Glinchuk, M. D.
Chen, Long Qing
Kalinin, S. V.
Gopalan, V.
TI Impact of Free Charges on Polarization and Pyroelectricity in
Antiferrodistortive Structures and Surfaces Induced by a Flexoelectric
Effect
SO FERROELECTRICS
LA English
DT Article; Proceedings Paper
CT 11th International Symposium on Ferroic Domains and Micro-to Nanoscopic
Structures, Russia-CIS-Baltic-Japan Symposium (ISFD-RCBJSF)on
Ferroelectricity
CY AUG 20-24, 2012
CL Ekaterinburg, RUSSIA
DE Flexoelectric effect; antiferrodistortive phase; antiphase and twin
boundaries
ID CRYSTALS; FERROELECTRICITY; TRANSITION; SRTIO3; PHASE
AB Landau-Ginzburg-Devonshire theory has been used to show that the combined effect of flexoelectricity and rotostriction can lead to a spontaneous polarization and pyro-electricity in the vicinity of antiphase boundaries, structural twin walls, surfaces, and interfaces in the octahedrally tilted phase of otherwise non-ferroelectric SrTiO3. In particular, the spontaneous polarization reaches the values similar to 0.1-5 mu C/cm(2) at the SrTiO3 antiphase boundaries and twins without free charges. In the current study we consider the contribution of free charges and show that the spontaneous polarization reaches the values similar to 1-5 mu C/cm(2) in the case. Pyroelectric coefficients also strongly increase allowing for the free charges.
C1 [Morozovska, A. N.] Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev, Ukraine.
[Eliseev, E. A.; Glinchuk, M. D.] Natl Acad Sci Ukraine, Inst Problems Mat Sci, UA-03142 Kiev, Ukraine.
[Chen, Long Qing; Gopalan, V.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA.
[Kalinin, S. V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA.
RP Morozovska, AN (reprint author), Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev, Ukraine.
EM morozo@i.com.ua; vxg8@psu.edu
RI Chen, LongQing/I-7536-2012; Kalinin, Sergei/I-9096-2012
OI Chen, LongQing/0000-0003-3359-3781; Kalinin, Sergei/0000-0001-5354-6152
FU National Science Foundation [DMR-0908718, DMR-0820404, DMR-1210588];
U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and
Engineering Division
FX Authors gratefully acknowledge multiple discussions with Daniel Litvin
and Behera K. Rakesh. National Science Foundation (DMR-0908718,
DMR-0820404, DMR-1210588) are acknowledged by V. G., L. Q. C. A.N.M., E.
A. E., M. D. G. acknowledges Ukrainian State Fund for Fundamental
Researches, joint project SFFR-NSF. Research was supported (for S. V.
K.) by the U.S. Department of Energy, Basic Energy Sciences, Materials
Sciences and Engineering Division.
NR 34
TC 3
Z9 3
U1 1
U2 18
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND
SN 0015-0193
EI 1563-5112
J9 FERROELECTRICS
JI Ferroelectrics
PY 2012
VL 438
BP 32
EP 44
DI 10.1080/00150193.2012.744257
PG 13
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 058ZL
UT WOS:000312673800004
ER
PT J
AU Lim, JQ
Tennakoon, C
Li, GL
Wong, E
Ruan, YJ
Wei, CL
Sung, WK
AF Lim, Jing-Quan
Tennakoon, Chandana
Li, Guoliang
Wong, Eleanor
Ruan, Yijun
Wei, Chia-Lin
Sung, Wing-Kin
TI BatMeth: improved mapper for bisulfite sequencing reads on DNA
methylation
SO GENOME BIOLOGY
LA English
DT Article
ID METHYLOME ANALYSIS; HUMAN GENOME; ALIGNMENT; ARABIDOPSIS; SOFTWARE; MAPS
AB DNA methylation plays a crucial role in higher organisms. Coupling bisulfite treatment with next generation sequencing enables the interrogation of 5-methylcytosine sites in the genome. However, bisulfite conversion introduces mismatches between the reads and the reference genome, which makes mapping of Illumina and SOLiD reads slow and inaccurate. BatMeth is an algorithm that integrates novel Mismatch Counting, List Filtering, Mismatch Stage Filtering and Fast Mapping onto Two Indexes components to improve unique mapping rate, speed and precision. Experimental results show that BatMeth is faster and more accurate than existing tools. BatMeth is freely available at http://code.google.com/p/batmeth/.
C1 [Lim, Jing-Quan; Tennakoon, Chandana; Sung, Wing-Kin] Natl Univ Singapore, Dept Comp Sci, Singapore 117417, Singapore.
[Tennakoon, Chandana] CeLS, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore.
[Li, Guoliang; Wong, Eleanor; Ruan, Yijun; Sung, Wing-Kin] Genome Inst Singapore, Singapore 138672, Singapore.
[Wong, Eleanor; Wei, Chia-Lin] Natl Univ Singapore, Dept Biol Sci, Singapore 117543, Singapore.
[Wei, Chia-Lin] Joint Genome Inst, Walnut Creek, CA 94598 USA.
RP Sung, WK (reprint author), Natl Univ Singapore, Dept Comp Sci, Singapore 117417, Singapore.
EM ksung@comp.nus.edu.sg
RI Li, Guoliang/I-1494-2015
OI Li, Guoliang/0000-0003-1601-6640
FU MOEs AcRF Tier 2 funding [R-252-000-444-112]
FX This research is supported in part by MOEs AcRF Tier 2 funding
R-252-000-444-112.
NR 35
TC 17
Z9 19
U1 0
U2 7
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1474-760X
J9 GENOME BIOL
JI Genome Biol.
PY 2012
VL 13
IS 10
SI SI
AR R82
DI 10.1186/gb-2012-13-10-R82
PG 14
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 065XQ
UT WOS:000313183900001
PM 23034162
ER
PT J
AU Tian, ZX
Tolic, N
Zhao, R
Moore, RJ
Hengel, SM
Robinson, EW
Stenoien, DL
Wu, S
Smith, RD
Pasa-Tolic, L
AF Tian, Zhixin
Tolic, Nikola
Zhao, Rui
Moore, Ronald J.
Hengel, Shawna M.
Robinson, Errol W.
Stenoien, David L.
Wu, Si
Smith, Richard D.
Pasa-Tolic, Ljiljana
TI Enhanced top-down characterization of histone post-translational
modifications
SO GENOME BIOLOGY
LA English
DT Article
DE Saltless WCX-HILIC; top-down; histone; posttranslational modification
ID MASS-SPECTROMETRY; LIQUID-CHROMATOGRAPHY; H4; ISOFORMS; REPAIR; DOMAIN;
CODE; H3
AB Post-translational modifications (PTMs) of core histones work synergistically to fine tune chromatin structure and function, generating a so-called histone code that can be interpreted by a variety of chromatin interacting proteins. We report a novel online two-dimensional liquid chromatography-tandem mass spectrometry (2D LC-MS/MS) platform for high-throughput and sensitive characterization of histone PTMs at the intact protein level. The platform enables unambiguous identification of 708 histone isoforms from a single 2D LC-MS/MS analysis of 7.5 mu g purified core histones. The throughput and sensitivity of comprehensive histone modification characterization is dramatically improved compared with more traditional platforms.
C1 [Tian, Zhixin; Tolic, Nikola; Zhao, Rui; Hengel, Shawna M.; Robinson, Errol W.; Wu, Si; Pasa-Tolic, Ljiljana] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA.
[Tian, Zhixin] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China.
[Moore, Ronald J.; Stenoien, David L.; Smith, Richard D.] Pacific NW Natl Lab, Biol Sci Div, Richland, WA 99352 USA.
RP Pasa-Tolic, L (reprint author), Pacific NW Natl Lab, Environm Mol Sci Lab, 902 Battelle Blvd, Richland, WA 99352 USA.
EM ljiljana.pasatolic@pnl.gov
RI Smith, Richard/J-3664-2012; tian, zhixin/A-3958-2015
OI Smith, Richard/0000-0002-2381-2349; tian, zhixin/0000-0002-2877-8282
FU William R. Wiley Environmental Molecular Sciences Laboratory (EMSL)
Intramural Research and Capability Development Program; US Department of
Energy (DOE) Office of Biological and Environmental Research (OBER); NIH
National Center for Research Resources [RR018522]; DOE-OBER; DOE
[DE-AC05-76RLO1830]
FX We thank Prof. Neil Kelleher for providing the ProSightPC program.
Portions of this work were supported by the William R. Wiley
Environmental Molecular Sciences Laboratory (EMSL) Intramural Research
and Capability Development Program, the US Department of Energy (DOE)
Office of Biological and Environmental Research (OBER), and the NIH
National Center for Research Resources (grant RR018522). The research
was performed using EMSL, a national scientific user facility sponsored
by the DOE-OBER and located at the PNNL. PNNL is a multi-program
national laboratory operated by Battelle for the DOE under Contract
DE-AC05-76RLO1830.
NR 21
TC 47
Z9 52
U1 3
U2 44
PU BIOMED CENTRAL LTD
PI LONDON
PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND
SN 1474-7596
J9 GENOME BIOL
JI Genome Biol.
PY 2012
VL 13
IS 10
SI SI
AR R86
DI 10.1186/gb-2012-13-10-R86
PG 9
WC Biotechnology & Applied Microbiology; Genetics & Heredity
SC Biotechnology & Applied Microbiology; Genetics & Heredity
GA 065XQ
UT WOS:000313183900005
PM 23034525
ER
PT J
AU Ke, Y
Leung, LR
Huang, M
Coleman, AM
Li, H
Wigmosta, MS
AF Ke, Y.
Leung, L. R.
Huang, M.
Coleman, A. M.
Li, H.
Wigmosta, M. S.
TI Development of high resolution land surface parameters for the Community
Land Model
SO GEOSCIENTIFIC MODEL DEVELOPMENT
LA English
DT Article
ID VEGETATION CONTINUOUS FIELD; LEAF-AREA INDEX; LAI PRODUCTS; MODIS;
VALIDATION; FOREST; NEEDS
AB There is a growing need for high-resolution land surface parameters as land surface models are being applied at increasingly higher spatial resolution offline as well as in regional and global models. The default land surface parameters for the most recent version of the Community Land Model (i.e. CLM 4.0) are at 0.5 degrees or coarser resolutions, released with the Community Earth System Model (CESM). Plant Functional Types (PFTs), vegetation properties such as Leaf Area Index (LAI), Stem Area Index (SAI), and non-vegetated land covers were developed using remotely sensed datasets retrieved in late 1990's and the beginning of this century. In this study, we developed new land surface parameters for CLM 4.0, specifically PFTs, LAI, SAI and non-vegetated land cover composition, at 0.05 degrees resolution globally based on the most recent MODIS land cover and improved MODIS LAI products. Compared to the current CLM 4.0 parameters, the new parameters produced a decreased coverage by bare soil and trees, but an increased coverage by shrub, grass, and cropland. The new parameters result in a decrease in global seasonal LAI, with the biggest decrease in boreal forests; however, the new parameters also show a large increase in LAI in tropical forest. Differences between the new and the current parameters are mainly caused by changes in the sources of remotely sensed data and the representation of land cover in the source data. Advantages and disadvantages of each dataset were discussed in order to provide guidance on the use of the data. The new high-resolution land surface parameters have been used in a coupled land-atmosphere model (WRF-CLM) applied to the western US to demonstrate their use in high-resolution modeling. A remapping method from the latitude/longitude grid of the CLM data to the WRF grids with map projection was also demonstrated. Future work will include global offline CLM simulations to examine the impacts of source data resolution and subsequent land parameter changes on simulated land surface processes.
C1 [Ke, Y.; Leung, L. R.; Huang, M.; Coleman, A. M.; Li, H.; Wigmosta, M. S.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Ke, Y.] Capital Normal Univ, Dept Resource Environm & Tourism, Beijing 100048, Peoples R China.
RP Leung, LR (reprint author), Pacific NW Natl Lab, 902 Battelle Blvd, Richland, WA 99352 USA.
EM ruby.leung@pnnl.gov
RI Li, Hong-Yi/C-9143-2014; Huang, Maoyi/I-8599-2012
OI Li, Hong-Yi/0000-0001-5690-3610; Huang, Maoyi/0000-0001-9154-9485
FU Department of Energy Earth System Modeling Program; DOE [DE-AC06-76RLO
1830]
FX Development of the high-resolution surface parameters and the WRF-CLM
coupled simulation was supported by the Pacific Northwest National
Laboratory (PNNL) Integrated Regional Earth System Modeling (iRESM)
Initiative. Analysis and evaluation of the high-resolution surface
parameters were supported as part of the efforts to develop a new
subgrid classification scheme for CLM for the Climate Science for
Sustainable Energy Future (CSSEF) Project funded by the Department of
Energy Earth System Modeling Program. PNNL is operated by Battelle for
the DOE under Contract DE-AC06-76RLO 1830.
NR 38
TC 29
Z9 29
U1 0
U2 49
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1991-959X
J9 GEOSCI MODEL DEV
JI Geosci. Model Dev.
PY 2012
VL 5
IS 6
BP 1341
EP 1362
DI 10.5194/gmd-5-1341-2012
PG 22
WC Geosciences, Multidisciplinary
SC Geology
GA 059HW
UT WOS:000312696000002
ER
PT J
AU Kajino, M
Deushi, M
Maki, T
Oshima, N
Inomata, Y
Sato, K
Ohizumi, T
Ueda, H
AF Kajino, M.
Deushi, M.
Maki, T.
Oshima, N.
Inomata, Y.
Sato, K.
Ohizumi, T.
Ueda, H.
TI Modeling wet deposition and concentration of inorganics over Northeast
Asia with MRI-PM/c
SO GEOSCIENTIFIC MODEL DEVELOPMENT
LA English
DT Article
ID EAST-ASIA; AEROSOL; SULFATE; DUST; PARAMETERIZATION; VARIABILITY;
ATMOSPHERE; EMISSIONS; NITRATE; NUCLEI
AB We conducted a regional-scale simulation over Northeast Asia for the year 2006 using an aerosol chemical transport model, with time-varying lateral and upper boundary concentrations of gaseous species predicted by a global stratospheric and tropospheric chemistry-climate model. The present one-way nested global-through-regional-scale model is named the Meteorological Research Institute-Passive-tracers Model system for atmospheric Chemistry (MRI-PM/c). We evaluated the model's performance with respect to the major anthropogenic and natural inorganic components, SO42-, NH4+, NO3-, Na+ and Ca2+ in the air, rain and snow measured at the Acid Deposition Monitoring Network in East Asia (EANET) stations. Statistical analysis showed that approximately 40-50% and 70-80% of simulated concentration and wet deposition of SO42-, NH4+, NO3- and Ca2+ are within factors of 2 and 5 of the observations, respectively. The prediction of the sea-salt originated component Na+ was not successful at near-coastal stations (where the distance from the coast ranged from 150 to 700 m), because the model grid resolution (Delta x = 60 km) is too coarse to resolve it. The simulated Na+ in precipitation was significantly underestimated by up to a factor of 30.
C1 [Kajino, M.; Deushi, M.; Maki, T.; Oshima, N.] Japan Meteorol Agcy, Meteorol Res Inst, Tsukuba, Ibaraki 3050052, Japan.
[Kajino, M.] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Inomata, Y.; Sato, K.; Ohizumi, T.] Asia Ctr Air Pollut Res, Nishi Ku, Niigata 9502144, Japan.
[Ueda, H.] Toyohashi Inst Technol, Tempaku Ku, Toyohashi, Aichi 4418580, Japan.
RP Kajino, M (reprint author), Japan Meteorol Agcy, Meteorol Res Inst, 1-1 Nagamine, Tsukuba, Ibaraki 3050052, Japan.
EM kajino@mri-jma.go.jp
RI Oshima, Naga/E-4708-2012
FU Fundamental Research Budget of the Meteorological Research Institute of
Japan; Environment Research and Technology Development Fund of the
Ministry of the Environment of Japan [B-0905, A-1101]; Ministry of
Education, Science, Sports and Culture (MEXT) [23310018]
FX This research was supported by the Fundamental Research Budget of the
Meteorological Research Institute of Japan, "Studies on Properties and
Processes of Atmospheric Aerosols." The study was partly supported by
the Environment Research and Technology Development Fund (Project No.
B-0905 and A-1101) of the Ministry of the Environment of Japan, and the
Ministry of Education, Science, Sports and Culture (MEXT), Grant-in-Aid
for Scientific Research (B), 23310018, 2011. M. K. thanks Hiroshi Hara
of Tokyo University of Agriculture and Technology, Kazuhide Matsuda of
Meisei University, and Naoto Kihara of the Central Research Institute of
the Electric Power Industry for the useful discussions.
NR 38
TC 8
Z9 10
U1 1
U2 6
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1991-959X
EI 1991-9603
J9 GEOSCI MODEL DEV
JI Geosci. Model Dev.
PY 2012
VL 5
IS 6
BP 1363
EP 1375
DI 10.5194/gmd-5-1363-2012
PG 13
WC Geosciences, Multidisciplinary
SC Geology
GA 059HW
UT WOS:000312696000003
ER
PT J
AU Kent, J
Jablonowski, C
Whitehead, JP
Rood, RB
AF Kent, J.
Jablonowski, C.
Whitehead, J. P.
Rood, R. B.
TI Downscale cascades in tracer transport test cases: an intercomparison of
the dynamical cores in the Community Atmosphere Model CAM5
SO GEOSCIENTIFIC MODEL DEVELOPMENT
LA English
DT Article
ID SEMI-LAGRANGIAN TRANSPORT; SHALLOW-WATER EQUATIONS; SPECTRAL ELEMENT
METHOD; ADVECTION SCHEME; SPHERE; GRIDS; APPROXIMATIONS; SIMULATIONS;
ALGORITHMS; PPM
AB The accurate modeling of cascades to unresolved scales is an important part of the tracer transport component of dynamical cores of weather and climate models. This paper aims to investigate the ability of the advection schemes in the National Center for Atmospheric Research's Community Atmosphere Model version 5 (CAM5) to model this cascade. In order to quantify the effects of the different advection schemes in CAM5, four two-dimensional tracer transport test cases are presented. Three of the tests stretch the tracer below the scale of coarse resolution grids to ensure the downscale cascade of tracer variance. These results are compared with a high resolution reference solution, which is simulated on a resolution fine enough to resolve the tracer during the test. The fourth test has two separate flow cells, and is designed so that any tracer in the western hemisphere should not pass into the eastern hemisphere. This is to test whether the diffusion in transport schemes, often in the form of explicit hyper-diffusion terms or implicit through monotonic limiters, contains unphysical mixing.
An intercomparison of three of the dynamical cores of the National Center for Atmospheric Research's Community Atmosphere Model version 5 is performed. The results show that the finite-volume (CAM-FV) and spectral element (CAM-SE) dynamical cores model the downscale cascade of tracer variance better than the semi-Lagrangian transport scheme of the Eulerian spectral transform core (CAM-EUL). Each scheme tested produces unphysical mass in the eastern hemisphere of the separate cells test.
C1 [Kent, J.; Jablonowski, C.; Whitehead, J. P.; Rood, R. B.] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA.
[Whitehead, J. P.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Kent, J (reprint author), Univ Michigan, Dept Atmospher Ocean & Space Sci, 2455 Hayward St, Ann Arbor, MI 48109 USA.
EM jdkent@umich.edu
RI Jablonowski, Christiane/I-9068-2012; Rood, Richard/C-5611-2008;
OI Jablonowski, Christiane/0000-0003-0407-0092; Rood,
Richard/0000-0002-2310-4262; Kent, James/0000-0003-4287-4032
FU US Department of Energy's SciDAC program [DE-FG02-07ER64446,
DE-SC0006684]; DOE through the LANL/LDRD program
FX We would like to thank two anonymous reviewers for their helpful
comments. We would also like to thank Paul Ullrich and Michael Levy for
computational assistance. Support for this research has been provided by
the US Department of Energy's SciDAC program under grants
DE-FG02-07ER64446 and DE-SC0006684. We also thank DOE for support
through the LANL/LDRD program.
NR 45
TC 6
Z9 6
U1 0
U2 6
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1991-959X
J9 GEOSCI MODEL DEV
JI Geosci. Model Dev.
PY 2012
VL 5
IS 6
BP 1517
EP 1530
DI 10.5194/gmd-5-1517-2012
PG 14
WC Geosciences, Multidisciplinary
SC Geology
GA 059HW
UT WOS:000312696000012
ER
PT J
AU Valcke, S
Balaji, V
Craig, A
DeLuca, C
Dunlap, R
Ford, RW
Jacob, R
Larson, J
O'Kuinghttons, R
Riley, GD
Vertenstein, M
AF Valcke, S.
Balaji, V.
Craig, A.
DeLuca, C.
Dunlap, R.
Ford, R. W.
Jacob, R.
Larson, J.
O'Kuinghttons, R.
Riley, G. D.
Vertenstein, M.
TI Coupling technologies for Earth System Modelling
SO GEOSCIENTIFIC MODEL DEVELOPMENT
LA English
DT Article
ID CLIMATE; FRAMEWORK; TOOLKIT
AB This paper presents a review of the software currently used in climate modelling in general and in CMIP5 in particular to couple the numerical codes representing the different components of the Earth System. The coupling technologies presented show common features, such as the ability to communicate and regrid data, and also offer different functions and implementations. Design characteristics of the different approaches are discussed as well as future challenges arising from the increasing complexity of scientific problems and computing platforms.
C1 [Valcke, S.] CERFACS, Sci Univers CERFACS, URA1875, F-31057 Toulouse 01, France.
[Balaji, V.] Princeton Univ, Princeton, NJ 08544 USA.
[Craig, A.; Vertenstein, M.] Natl Ctr Atmospher Res, Boulder, CO 80305 USA.
[DeLuca, C.; O'Kuinghttons, R.] NOAA, CIRES, Boulder, CO USA.
[Dunlap, R.] Georgia Tech, Coll Comp, Atlanta, GA USA.
[Ford, R. W.] STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England.
[Jacob, R.] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Larson, J.] Australian Natl Univ, Inst Math Sci, Canberra, ACT 0200, Australia.
[Riley, G. D.] Univ Manchester, Sch Comp Sci, Manchester M13 9PL, Lancs, England.
RP Valcke, S (reprint author), CERFACS, Sci Univers CERFACS, URA1875, 42 Av G Coriolis, F-31057 Toulouse 01, France.
EM valcke@cerfacs.fr
FU EU FP7 IS-ENES project [228203]; CNRS-INSU
FX This paper is based on the outcome of the Workshop on "Coupling
Technologies for Earth System Modelling: Today and Tomorrow" (Valcke and
Dunlap, 2011) organised in CERFACS in 2010. We would like to thank all
participants who took actively part in the discussions and the EU FP7
IS-ENES project (Contract GA No: 228203) for financial support.; The
publication of this article is financed by CNRS-INSU.
NR 26
TC 15
Z9 16
U1 3
U2 18
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1991-959X
J9 GEOSCI MODEL DEV
JI Geosci. Model Dev.
PY 2012
VL 5
IS 6
BP 1589
EP 1596
DI 10.5194/gmd-5-1589-2012
PG 8
WC Geosciences, Multidisciplinary
SC Geology
GA 059HW
UT WOS:000312696000016
ER
PT S
AU Zitzer, B
AF Zitzer, Benjamin
CA VERITAS Collaboration
BE Aharonian, FA
Hofmann, W
Rieger, FM
TI VERITAS Observations of the Crab Pulsar
SO HIGH ENERGY GAMMA-RAY ASTRONOMY
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 5th International Meeting on High Energy Gamma-Ray Astronomy
CY JUL 09-13, 2012
CL Heidelberg, GERMANY
SP Max-Planck-Inst Nucl Phys (MPIK), Springer Verlag, iseg, W-IE-NE-R GmbH
DE Crab; Gamma-Ray; Pulsar; IACTS; VERITAS; LIV; GRPs
ID GIANT PULSES
AB The Crab pulsar has been widely studied across the electromagnetic spectrum from radio to gamma-ray energies. The exact nature of the emission processes taking place in the pulsar is a matter of broad debate. Above a few GeV the energy spectrum turns over suddenly. The shape of this cutoff can provide unique insight in to the particle acceleration processes taking place in the pulsar magnetosphere. Here we discuss the detection of pulsed gamma-rays from the Crab Pulsar above 100 GeV with the VERITAS telescopes in the context of measurements made with the Fermi space telescope below 10 GeV. Limits on the level of flux enhancement of emission correlated with giant radio pulses and dispersion due to Lorentz invariance violation effects will also be presented.
C1 [Zitzer, Benjamin; VERITAS Collaboration] Argonne Natl Lab, Lemont, IL USA.
RP Zitzer, B (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Lemont, IL USA.
NR 17
TC 0
Z9 0
U1 0
U2 1
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1123-4
J9 AIP CONF PROC
PY 2012
VL 1505
BP 297
EP 300
DI 10.1063/1.4772256
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDB83
UT WOS:000312503500043
ER
PT S
AU Reitberger, K
Reimer, O
Reimer, A
Werner, M
Egberts, K
Takahashi, H
AF Reitberger, K.
Reimer, O.
Reimer, A.
Werner, M.
Egberts, K.
Takahashi, H.
BE Aharonian, FA
Hofmann, W
Rieger, FM
TI Gamma-ray follow-up studies on eta Carinae
SO HIGH ENERGY GAMMA-RAY ASTRONOMY
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 5th International Meeting on High Energy Gamma-Ray Astronomy
CY JUL 09-13, 2012
CL Heidelberg, GERMANY
SP Max-Planck-Inst Nucl Phys (MPIK), Springer Verlag, ISEG, W-IE-NE-R GmbH
DE Gamma rays: stars; Binaries: general; Stars: binaries
ID EMISSION
AB The increased exposure in conjunction with the improved instrumental response functions of the Fermi-LAT now allows a more detailed investigation of location, spectral shape and flux time history of the observed gamma-ray emission at the position of eta Carinae.
We detect a weak but regular flux decrease over time. This can be understood and interpreted in a colliding-wind binary scenario for orbital modulation of the gamma-ray emission. We find that the spectral shape of the gamma-ray signal agrees with a single emitting particle population in combination with significant absorption by gamma-gamma pair production.
Concluding, we are able to report on the first unambiguous detection of GeV gamma-ray emission from a colliding-wind massive star binary. Studying the correlation of the flux decrease with the orbital separation of the binary components allows us to predict the behaviour up to the next periastron passage in 2014.
C1 [Reitberger, K.; Reimer, O.; Reimer, A.; Werner, M.; Egberts, K.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
[Reimer, O.; Reimer, A.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Natl Accelerator Lab,SLAC, Stanford, CA 94305 USA.
[Takahashi, H.] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan.
RP Reitberger, K (reprint author), Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria.
RI Reimer, Olaf/A-3117-2013
OI Reimer, Olaf/0000-0001-6953-1385
FU NASA and DOE in the United States; CEA/ Irfu and IN2P3/ CNRS in France;
ASI and INFN in Italy; MEXT, KEK; JAXA in Japan; K. A. Wallenberg
Foundation; Swedish Research Council and the National Space Board in
Sweden
FX yy The Fermi LAT Collaboration acknowledges support from a number of
agencies and institutes for both development and the operation of the
LAT as well as scientific data analysis. These include NASA and DOE in
the United States, CEA/ Irfu and IN2P3/ CNRS in France, ASI and INFN in
Italy, MEXT, KEK, and JAXA in Japan, and the K. A. Wallenberg
Foundation, the Swedish Research Council and the National Space Board in
Sweden. Additional support from INAF in Italy and CNES in France for
science analysis during the operations phase is also gratefully
acknowledged.
NR 7
TC 0
Z9 0
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1123-4
J9 AIP CONF PROC
PY 2012
VL 1505
BP 414
EP 417
DI 10.1063/1.4772285
PG 4
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDB83
UT WOS:000312503500072
ER
PT B
AU Hagenaar, H
Shine, R
Ryutova, M
Dalda, AS
AF Hagenaar, H.
Shine, R.
Ryutova, M.
Dalda, A. Sainz
BE Sekii, T
Watanabe, T
Sakurai, T
TI Signatures of Moving Magnetic Features in and above the Photosphere
SO HINODE-3: THE 3RD HINODE SCIENCE MEETING
SE Astronomical Society of the Pacific Conference Series
LA English
DT Proceedings Paper
CT 3rd Hinode Science Meeting
CY DEC 01-04, 2009
CL Tokyo, JAPAN
ID SUNSPOTS; FLUX
AB Hinode/SOT observations of NOAA AR 10933 from 2007 Jan 4 16:14 UT - Jan 6 22:20 UT are used to study MMFs (moving magnetic features) in the periphery of the region's large sunspot and the surrounding moat. The data consist of a nearly continuous set of Fe 6302 angstrom Stokes V images with sets of G band and Ca II H filtergrams at various cadences, FOV's, and resolutions plus some SpectroPolarimeter (SP) scans. We also used TRACE images in 171 angstrom to follow any possible signatures at higher temperatures. We applied automatic object recognition and tracking to the MMFs as seen in the Fe 6302 angstrom Stokes V images. An SP scan was used to determine the line profiles for several paths. Reliable inversions have not yet been done, but we find a few locations of possible supersonic downflows from the Stokes IQUV line profiles. The population of MMFs on the East side of the sunspot is much higher than on the opposite side, mostly involving a large number of mixed polarity MMFs. Consequently, the chromosphere shows strongly enhanced brightenings with a clear pattern: enhanced brightenings in Ca H outline the locations where opposite polarity MMFs meet. This activity does not prevent formation of active low lying "closed" loops at coronal temperatures seen in the TRACE 171 angstrom line. The other side, with fewer MMFs, shows a pattern that we found earlier: regions with an MMF deficiency show long living "open" coronal loops. This work was supported by NASA contract NNM07AA01C.
C1 [Hagenaar, H.; Shine, R.; Dalda, A. Sainz] Lockheed Martin Solar & Astrophys Lab, Palo Alto, CA USA.
[Ryutova, M.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hagenaar, H (reprint author), Lockheed Martin Solar & Astrophys Lab, Palo Alto, CA USA.
NR 10
TC 1
Z9 1
U1 0
U2 0
PU ASTRONOMICAL SOC PACIFIC
PI SAN FRANCISCO
PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USA
BN 978-1-58381-790-2
J9 ASTR SOC P
PY 2012
VL 454
BP 181
EP +
PG 2
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BDA28
UT WOS:000312283700039
ER
PT S
AU Cramer, CE
Brown, SW
Lykke, KR
Woodward, JT
Bailey, S
Schlegel, DJ
Bolton, AS
Brownstein, J
Doherty, PE
Stubbs, CW
Vaz, A
Szentgyorgyi, A
AF Cramer, Claire E.
Brown, Steven W.
Lykke, Keith R.
Woodward, John T.
Bailey, Stephen
Schlegel, David J.
Bolton, Adam S.
Brownstein, Joel
Doherty, Peter E.
Stubbs, Christopher W.
Vaz, Amali
Szentgyorgyi, Andrew
BE Navarro, R
Cunningham, CR
Prieto, E
TI Tunable Laser Techniques for Improving the Precision of Observational
Astronomy
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE tunable lasers; photometry; spectroscopy; calibration; wavelength
calibration; psf characterization; echelle spectrograph; sky subtraction
ID SPECTRAL IRRADIANCE; UNIFORM SOURCES; LIGHT CURVES; NIST; FACILITY
AB Improving the precision of observational astronomy requires not only new telescopes and instrumentation, but also advances in observing protocols, calibrations and data analysis. The Laser Applications Group at the National Institute of Standards and Technology in Gaithersburg, Maryland has been applying advances in detector metrology and tunable laser calibrations to problems in astronomy since 2007. Using similar measurement techniques, we have addressed a number of seemingly disparate issues: precision flux calibration for broad-band imaging, precision wavelength calibration for high-resolution spectroscopy, and precision PSF mapping for fiber spectrographs of any resolution. In each case, we rely on robust, commercially-available laboratory technology that is readily adapted to use at an observatory. In this paper, we give an overview of these techniques.
C1 [Cramer, Claire E.; Brown, Steven W.; Lykke, Keith R.; Woodward, John T.] NIST, Gaithersburg, MD 20899 USA.
[Bailey, Stephen; Schlegel, David J.] Lawrence Berkeley Lab, Berkeley, CA USA.
[Bolton, Adam S.; Brownstein, Joel] Univ Utah, Dept Phys & Astron, Salt Lake City, UT USA.
[Doherty, Peter E.; Stubbs, Christopher W.; Vaz, Amali] Harvard Univ, Dept Phys, Cambridge, MA USA.
[Szentgyorgyi, Andrew] Harvard Smithsonian Ctr Astrophys, Cambridge, MA USA.
RP Cramer, CE (reprint author), NIST, Gaithersburg, MD 20899 USA.
EM claire.cramer@nist.gov
NR 25
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 84500S
DI 10.1117/12.925198
PG 8
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800026
ER
PT S
AU Edelstein, J
Poppett, C
Sirk, M
Besuner, R
Lafever, R
Allington-Smith, JR
Murray, GJ
AF Edelstein, Jerry
Poppett, Claire
Sirk, Martin
Besuner, Robert
Lafever, Robin
Allington-Smith, Jeremy R.
Murray, Graham J.
BE Navarro, R
Cunningham, CR
Prieto, E
TI Optical Fiber Systems for the BigBOSS Instrument
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Optical fiber; BigBOSS; multi-object spectrograph; focal ratio
degradation; fusion splicing
AB We describe the fiber optics systems for use in BigBOSS. a proposed massively parallel multi-object spectrograph for the Kitt Peak Mayall 4-in telescope that will measure baryon acoustic oscillations to explore dark energy. BigBOSS will include 5,000 optical fibers each precisely actuator-positioned to collect an astronomical target's flux at the telescope prime-focus. The fibers are to be routed 40m through the telescope facility to feed ten visible-band imaging spectrographs. We report on our fiber component development and performance measurement program. Results include the numerical modeling of focal ratio degradation (FRD), observations of actual fibers' collimated and converging beam FRD, and observations of FRD from different types of fiber terminations, mechanical connectors, and fusion-splice connections.
C1 [Edelstein, Jerry; Sirk, Martin; Besuner, Robert] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
[Poppett, Claire; Lafever, Robin] Lawrence Berkeley Natl Lab, Lawrence, KS USA.
[Allington-Smith, Jeremy R.; Murray, Graham J.] Univ Durham, Durham, England.
RP Edelstein, J (reprint author), Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.
NR 5
TC 1
Z9 1
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 845036
DI 10.1117/12.925196
PG 10
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800099
ER
PT S
AU Kuzmenko, PJ
Little, SL
Little, LM
Wilson, JC
Skrutskie, MF
Hinz, PM
Leisenring, JM
Durney, O
AF Kuzmenko, Paul J.
Little, Steve L.
Little, Liesl M.
Wilson, John C.
Skrutskie, Michael F.
Hinz, Phillip M.
Leisenring, Jarron M.
Durney, Oliver
BE Navarro, R
Cunningham, CR
Prieto, E
TI Fabrication and testing of germanium grisms for LMIRcam
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE infrared; grism; germanium; LMIRcam
AB We diamond fly cut 2 sets of germanium grisms for the LMIRcam 3-5 micron Fizeau imager for the combined focus of the Large Binocular Telescope (LBT). The grisms mount in a filter wheel near a pupil to enable moderate resolution (R similar to 300) spectroscopy. Both sets have a measured blaze angle of 2.9 degrees. The first set has a groove period of 40 lines/mm and will be used in first order with peak efficiency at 3.6 mu m. The second set has 32 lines/mm It can operate in first order with an efficiency peak near 4.4 mu m and in second order with a peak near 2.3 mu m. First results from testing the grisms in the instrument on the sky with the LBT are presented.
C1 [Kuzmenko, Paul J.; Little, Steve L.; Little, Liesl M.] Lawrence Livermore Natl Lab, L-183,POB 808, Livermore, CA 94551 USA.
[Wilson, John C.; Skrutskie, Michael F.] Univ Virginia, Charlottesville, VA 22904 USA.
[Hinz, Phillip M.; Durney, Oliver] Univers Arizona, Steward Observ, Tucson, AZ 85721 USA.
[Leisenring, Jarron M.] Swiss Fed Inst Technol, CH-8093 Zurich, Switzerland.
RP Kuzmenko, PJ (reprint author), Lawrence Livermore Natl Lab, L-183,POB 808, Livermore, CA 94551 USA.
EM kuzmenko1@llnl.gov
FU U. S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; National Science Foundation [0705296]
FX The LLNL portion of his work was performed under the auspices of the U.
S. Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC52-07NA27344. LMIRcam is supported by the National Science
Foundation under Grant No. 0705296.
NR 12
TC 2
Z9 2
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 84503P
DI 10.1117/12.926674
PG 12
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800116
ER
PT S
AU Kuzmenko, PJ
Ikeda, Y
Kobayashi, N
Mirkarimi, PB
Alameda, JB
AF Kuzmenko, Paul J.
Ikeda, Yuji
Kobayashi, Naoto
Mirkarimi, Paul B.
Alameda, Jennifer B.
BE Navarro, R
Cunningham, CR
Prieto, E
TI Reflective coating for near infrared immersion gratings
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE immersion grating; near infrared; metal coating; reflective coating;
ZnSe; ZnS
ID EXTREME-ULTRAVIOLET LITHOGRAPHY
AB Achieving high reflectivity from an immersed grating facet can be challenging in the near infrared. The reflectivity of metallic coatings in common use, such as Al and Cr/Au, decrease with decreasing wavelength in the near IR. A layer of copper on ZnSe or ZnS should have a high, immersed reflectivity based on tabulated values of refractive index, but in fact performs poorly. We attribute this to a chemical reaction between the copper and the selenium or sulfur.
A non-reactive intermediate layer can prevent this problem. Since reflectivity at an interface increases with increasing difference in refractive index, it is beneficial to choose an intermediate layer of low index. A further improvement is gained by adjusting the layer thickness so that reflections from the two interfaces of the intermediate layer add constructively.
We sputtered 130 nm of SiO2 onto ZnSe and ZnS substrates followed by 200 nm of Cu. The copper was then coated with 5 nm of SiC as a protective capping layer Immersed reflectivity measured shortly after coating exceeded 95% between 1500 and 1100 nm and exceeded 90% down to 850 nm. A repeat measurement after long term exposure to high humidity conditions showed no changes.
C1 [Kuzmenko, Paul J.; Mirkarimi, Paul B.; Alameda, Jennifer B.] Lawrence Livermore Natl Lab, L-183,POB 808, Livermore, CA 94551 USA.
[Ikeda, Yuji] Photocoding Inc, Sakyo Ku, Kyoto 6060004, Japan.
[Kobayashi, Naoto] Univ Tokyo, Inst Astron, Mitaka, Tokyo 1810015, Japan.
RP Kuzmenko, PJ (reprint author), Lawrence Livermore Natl Lab, L-183,POB 808, Livermore, CA 94551 USA.
EM kuzmenko1@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC5207NA27344]
FX Thanks to Justin Wolfe for performing the 1053 nm reflectivity
measurements. This work was performed under the auspices of the U.S.
Department of Energy by Lawrence Livermore National Laboratory under
Contract DE-AC5207NA27344.
NR 13
TC 1
Z9 1
U1 1
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 84503O
DI 10.1117/12.926668
PG 11
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800115
ER
PT S
AU Pazder, J
Bauman, B
Dillon, D
Fletcher, M
Lacoursiere, J
Reshetov, V
AF Pazder, John
Bauman, Brian
Dillon, Daren
Fletcher, Murray
Lacoursiere, Jean
Reshetov, Vlad
BE Navarro, R
Cunningham, CR
Prieto, E
TI The optical alignment of the Gemini planet imager adaptive optics bench
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Gemini Telescope; astronomical instrumentation; off-axis paraboloids;
optical alignment; Faro Arm; Shack Hartmann wavefront sensor
ID AXIS
AB The Gemini Planet Imager (GPI) is a facility instrument under construction for the 8-m Gemini South telescope. This paper describes the methods used for optical alignment of the adaptive optics (AO) bench. The optical alignment of the off-axis paraboloid mirrors was done using a pre-alignment method utilizing a HeNe laser and alignment telescopes followed by a fine-tuning using a Shack-Hartmann wavefront sensor and a shear plate. A FARO arm measuring system was used to place the fiducials for the alignment. Using these methods the AO bench was aligned to 13nm RMS of wavefront error.
C1 [Pazder, John; Fletcher, Murray; Reshetov, Vlad] Natl Res Council Canada, Herzberg Inst Astrophys, 5071 W Saanich Rd, Victoria, BC V9E 2E7, Canada.
[Bauman, Brian] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Dillon, Daren] Univ Calif Santa Cruz, Lab Adapt Opt, Santa Cruz, CA 95064 USA.
[Lacoursiere, Jean] Consultant Opt Design & Engn, Quebec City, PQ G1V 4R8, Canada.
RP Pazder, J (reprint author), Natl Res Council Canada, Herzberg Inst Astrophys, 5071 W Saanich Rd, Victoria, BC V9E 2E7, Canada.
NR 7
TC 2
Z9 2
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 845058
DI 10.1117/12.925866
PG 8
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800163
ER
PT S
AU Poppett, C
Edelestein, J
Lampton, M
Jelinsky, P
Arn, J
AF Poppett, Claire
Edelestein, Jerry
Lampton, Mike
Jelinsky, Patrick
Arn, James
BE Navarro, R
Cunningham, CR
Prieto, E
TI Comparing modelling techniques when designing VPH gratings for BigBOSS
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE VPHG; spectroscopy; BigBOSS
ID COUPLED-WAVE THEORY
AB BigBOSS is a Stage IV Dark Energy instrument based on the Baryon Acoustic Oscillations (BAO) and Red Shift Distortions (RSD) techniques using spectroscopic data of 20 million ELG and LRG galaxies at 0.5 <= z <= 1.6 in addition to several hundred thousand QSOs at 0.5 <= z <= 3.5. When designing BigBOSS instrumentation, it is imperative to maximize throughput whilst maintaining a resolving power of between R=1500 and 4000 over a wavelength range of 360-980 nm. Volume phase Holographic (VPH) gratings have been identified as a key technology which will enable the efficiency requirement to be met, however it is important to be able to accurately predict their performance. In this paper we quantitatively compare different modelling techniques in order to assess the parameter space over which they are more capable of accurately predicting measured performance. Finally we present baseline parameters for grating designs that are most suitable for the BigBOSS instrument.
C1 [Poppett, Claire] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Edelestein, Jerry; Lampton, Mike; Jelinsky, Patrick] Space Sci Lab, Berkeley, CA USA.
[Arn, James] Kaiser Opt Syst Inc, Ann Arbor, MI USA.
RP Poppett, C (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM clpoppett@lbl.gov
FU Office of Science, U. S. Department of Energy [DE- AC03- 76SF00098]
FX The authors gratefully acknowledge the support by the Director, Office
of Science, U. S. Department of Energy under Contract No. DE- AC03-
76SF00098.
NR 11
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 845044
DI 10.1117/12.925737
PG 7
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800129
ER
PT S
AU Reil, K
Bebek, C
Besuner, R
Lampton, M
Roodman, A
Sholl, M
AF Reil, Kevin
Bebek, Christopher
Besuner, Robert
Lampton, Mike
Roodman, Aaron
Sholl, Mike
BE Navarro, R
Cunningham, CR
Prieto, E
TI Guide, Focus/Alignment System for BigBOSS
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE BigBOSS; telescope guiding; focus/alignment; BAO
AB The BigBOSS experiment is a proposed DOE-NSF Stage IV dark energy survey. The all sky survey will be used to study the baryon acoustic oscillation (BAO) and growth of large scale structure from 0.2 < z < 3.5. Key to the timely success of BigBOSS is the total optical throughput of the system. The guide, focus/alignment system will provide essential pointing information, field acquisition, atmospheric monitoring and alignment corrections all used to maximize light throughput.
C1 [Reil, Kevin; Roodman, Aaron] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Bebek, Christopher; Lampton, Mike; Sholl, Mike] Lawrence Berkeley Natl Lab, Berkeley, CA USA.
[Besuner, Robert; Lampton, Mike] Univ Calif, Space Sci Lab, Berkeley, CA USA.
RP Reil, K (reprint author), SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
EM reil@slac.stanford.edu
NR 9
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 845037
DI 10.1117/12.926397
PG 9
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800100
ER
PT S
AU Silber, JH
Schenk, C
Anderssen, E
Bebek, C
Becker, F
Besuner, R
Cepeda, M
Edelstein, J
Heetderks, H
Jelinsky, P
Johnson, T
Karcher, A
Perry, P
Post, R
Sholl, M
Wilson, K
Zhou, ZX
AF Silber, Joseph H.
Schenk, Christoph
Anderssen, Eric
Bebek, Chris
Becker, Frederic
Besuner, Robert
Cepeda, Mario
Edelstein, Jerry
Heetderks, Henry
Jelinsky, Patrick
Johnson, Thomas
Karcher, Armin
Perry, Paul
Post, Rodney
Sholl, Michael
Wilson, Kenneth
Zhou, Zengxiang
BE Navarro, R
Cunningham, CR
Prieto, E
TI Design and performance of an R-theta fiber positioner for the BigBOSS
instrument
SO MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND
INSTRUMENTATION II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modern Technologies in Space-and Ground-Based Telescopes
and Instrumentation II
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Optical fiber positioner; BigBOSS; flexure kinematics; fiber fed
spectrograph; miniature actuator
AB The BigBOSS instrument is a proposed multi-object spectrograph for the Mayall 4m telescope at Kitt Peak, which will measure the redshift of 20 million galaxies and map the expansion history of the universe over the past 8 billion years, surveying 10-20 times the volume of existing studies. For each 20 minute observation, 5000 optical fibers are individually positioned by a close-packed array of 5000 robotic positioner mechanisms. Key mechanical constraints on the positioners are: empty set12mm hardware envelope, 014mm overlapping patrol zones, open-loop targeting accuracy <= 40 mu m, and step resolution <= 5 mu m, among other requirements on envelope, power, stability, and speed. This paper describes the design and performance of a newly-developed fiber positioner with R-theta polar kinematics, in which a flexure-based linear R-axis is stacked on a rotational theta-axis. Benefits over the usual eccentric parallel axis theta-phi kinematic approach include faster repositioning, simplified anti-collision schemes, and inherent anti-backlash preload. Performance results are given for complete positioner assemblies as well as sub-component hardware characterization.
C1 [Silber, Joseph H.; Schenk, Christoph; Anderssen, Eric; Bebek, Chris; Becker, Frederic; Cepeda, Mario; Jelinsky, Patrick; Johnson, Thomas; Karcher, Armin; Perry, Paul; Post, Rodney; Wilson, Kenneth; Zhou, Zengxiang] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Besuner, Robert; Edelstein, Jerry; Heetderks, Henry; Sholl, Michael] Univ Calif, Berkeley Space Sci Lab, Berkeley, CA USA.
RP Silber, JH (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM jhsilber@lbl.gov
FU Office of Science; U. S. Department of Energy [DE- AC03- 76SF 00098]
FX We gratefully acknowledge the support of the Director, Office of
Science, U. S. Department of Energy, through contract DE- AC03- 76SF
00098.
NR 9
TC 1
Z9 1
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9151-0
J9 PROC SPIE
PY 2012
VL 8450
AR 845038
DI 10.1117/12.926457
PG 13
WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics
GA BDB07
UT WOS:000312415800101
ER
PT J
AU Usabiaga, FB
Bell, JB
Delgado-Buscalioni, R
Donev, A
Fai, TG
Griffith, BE
Peskin, CS
AF Usabiaga, Florencio Balboa
Bell, John B.
Delgado-Buscalioni, Rafael
Donev, Aleksandar
Fai, Thomas G.
Griffith, Boyce E.
Peskin, Charles S.
TI STAGGERED SCHEMES FOR FLUCTUATING HYDRODYNAMICS
SO MULTISCALE MODELING & SIMULATION
LA English
DT Article
DE fluctuating hydrodynamics; staggered grid; giant fluctuations;
fluctuation-dissipation balance
ID NAVIER-STOKES EQUATIONS; IMMERSED BOUNDARY METHOD; STOCHASTIC
DIFFERENTIAL-EQUATIONS; NONEQUILIBRIUM FLUCTUATIONS; PROJECTION METHOD;
APPROXIMATE PROJECTION; INCOMPRESSIBLE-FLOW; MOLECULAR FLUIDS;
DIFFUSION; STABILITY
AB We develop numerical schemes for solving the isothermal compressible and incompressible equations of fluctuating hydrodynamics on a grid with staggered momenta. We develop a second-order accurate spatial discretization of the diffusive, advective, and stochastic fluxes that satisfies a discrete fluctuation-dissipation balance and construct temporal discretizations that are at least second-order accurate in time deterministically and in a weak sense. Specifically, the methods reproduce the correct equilibrium covariances of the fluctuating fields to the third (compressible) and second (incompressible) orders in the time step, as we verify numerically. We apply our techniques to model recent experimental measurements of giant fluctuations in diffusively mixing fluids in a microgravity environment [A. Vailati et al., Nat. Comm., 2 (2011), 290]. Numerical results for the static spectrum of nonequilibrium concentration fluctuations are in excellent agreement between the compressible and incompressible simulations and in good agreement with experimental results for all measured wavenumbers.
C1 [Usabiaga, Florencio Balboa; Delgado-Buscalioni, Rafael] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain.
[Bell, John B.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA.
[Donev, Aleksandar; Fai, Thomas G.; Peskin, Charles S.] NYU, Courant Inst Math Sci, New York, NY 10012 USA.
[Griffith, Boyce E.] NYU, Sch Med, Leon H Charney Div Cardiol, Dept Med, New York, NY 10016 USA.
RP Usabiaga, FB (reprint author), Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain.
EM florencio.balboa@uam.es; JBBell@lbl.gov; rafael.delgado@uam.es;
donev@courant.nyu.edu; tfai@cims.nyu.edu; griffith@cims.nyu.edu;
peskin@courant.nyu.edu
RI Balboa Usabiaga, Florencio/L-2381-2013
OI Balboa Usabiaga, Florencio/0000-0003-0130-3532
FU Spanish government [FIS2010-22047-C0S]; Comunidad de Madrid MODELICO-CM
[S2009/ESP-1691]; DOE Applied Mathematics Program of the DOE Office of
Advanced Scientific Computing Research under the U.S. Department of
Energy [DE-AC02-05CH11231]; National Science Foundation [DMS-1115341,
OCI 1047734, DMS 1016554]; DOE Computational Science Graduate Fellowship
[DE-FG02-97ER25308]
FX These authors' research was supported by the Spanish government
FIS2010-22047-C0S and the Comunidad de Madrid MODELICO-CM
(S2009/ESP-1691).r The fourth author's research was supported by the DOE
Applied Mathematics Program of the DOE Office of Advanced Scientific
Computing Research under the U.S. Department of Energy under contract
DE-AC02-05CH11231 and by the National Science Foundation under grant
DMS-1115341. The fifth author's research was supported by the DOE
Computational Science Graduate Fellowship under grant
DE-FG02-97ER25308.r This author's research was supported by the National
Science Foundation under awards OCI 1047734 and DMS 1016554.
NR 87
TC 31
Z9 31
U1 0
U2 24
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1540-3459
EI 1540-3467
J9 MULTISCALE MODEL SIM
JI Multiscale Model. Simul.
PY 2012
VL 10
IS 4
BP 1369
EP 1408
DI 10.1137/120864520
PG 40
WC Mathematics, Interdisciplinary Applications; Physics, Mathematical
SC Mathematics; Physics
GA 059JU
UT WOS:000312702100010
ER
PT J
AU Rizzi, F
Najm, HN
Debusschere, BJ
Sargsyan, K
Salloum, M
Adalsteinsson, H
Knio, OM
AF Rizzi, F.
Najm, H. N.
Debusschere, B. J.
Sargsyan, K.
Salloum, M.
Adalsteinsson, H.
Knio, O. M.
TI UNCERTAINTY QUANTIFICATION IN MD SIMULATIONS. PART I: FORWARD
PROPAGATION
SO MULTISCALE MODELING & SIMULATION
LA English
DT Article
DE uncertainty quantification; Bayesian inference; polynomial chaos;
molecular dynamics; TIP4P water; adaptive sampling
ID MOLECULAR-DYNAMICS METHOD; MONTE-CARLO ALGORITHMS; POTENTIAL FUNCTIONS;
LIQUID WATER; PAIR POTENTIALS; ADAPTIVE MCMC; FLUID-FLOW; CONTINUUM;
EQUATIONS; SYSTEMS
AB This work focuses on quantifying the effect of intrinsic (thermal) noise and parametric uncertainty in molecular dynamics (MD) simulations. We consider isothermal, isobaric MD simulations of TIP4P (or four-site) water at ambient conditions, T = 298 K and P = 1 atm. Parametric uncertainty is assumed to originate from three force-field parameters that are parametrized in terms of standard uniform random variables. The thermal fluctuations inherent in MD simulations combine with parametric uncertainty to yield nondeterministic, noisy MD predictions of bulk water properties. Relying on polynomial chaos (PC) expansions, we develop a framework that enables us to isolate the impact of parametric uncertainty on the MD predictions and control the effect of the intrinsic noise. We construct the PC representations of quantities of interest (QoIs) using two different approaches: nonintrusive spectral projection (NISP) and Bayesian inference. We verify a priori the legitimacy of the NISP approach by verifying that the MD data satisfy regularity and smoothness conditions in the parameter space. The Bayesian inference approach relies on adaptively sampling the parameter space, based on analyzing the convergence of the PC expansions at different approximation levels. We show that for the present case, the effect of the thermal noise in the atomistic system can be controlled, and the MD predictions for the QoIs can be suitably represented using low-order PC models.
C1 [Najm, H. N.; Debusschere, B. J.; Sargsyan, K.; Salloum, M.; Adalsteinsson, H.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Rizzi, F.; Knio, O. M.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA.
RP Knio, OM (reprint author), Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA.
EM frizzi1@jhu.edu; hnnajm@sandia.gov; bjdebus@sandia.gov;
ksargsy@sandia.gov; mnsallo@sandia.gov; hadalst@sandia.gov;
omar.knio@duke.edu
FU U.S. Department of Energy, Office of Advanced Scientific Computing
Research [DE-SC0002506]; U.S. Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX Received by the editors October 27, 2011; accepted for publication (in
revised form) August 21, 2012; published electronically December 12,
2012. This research was supported by the U.S. Department of Energy,
Office of Advanced Scientific Computing Research, under award
DE-SC0002506. Sandia National Laboratories is a multiprogram laboratory
managed and operated by Sandia Corporation, a wholly owned subsidiary of
Lockheed Martin Corporation, for the U.S. Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 48
TC 23
Z9 23
U1 0
U2 18
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1540-3459
EI 1540-3467
J9 MULTISCALE MODEL SIM
JI Multiscale Model. Simul.
PY 2012
VL 10
IS 4
BP 1428
EP 1459
DI 10.1137/110853169
PG 32
WC Mathematics, Interdisciplinary Applications; Physics, Mathematical
SC Mathematics; Physics
GA 059JU
UT WOS:000312702100012
ER
PT J
AU Rizzi, F
Najm, HN
Debusschere, BJ
Sargsyan, K
Salloum, M
Adalsteinsson, H
Knio, OM
AF Rizzi, F.
Najm, H. N.
Debusschere, B. J.
Sargsyan, K.
Salloum, M.
Adalsteinsson, H.
Knio, O. M.
TI UNCERTAINTY QUANTIFICATION IN MD SIMULATIONS. PART II: BAYESIAN
INFERENCE OF FORCE-FIELD PARAMETERS
SO MULTISCALE MODELING & SIMULATION
LA English
DT Article
DE uncertainty quantification; inverse problem; Bayesian inference;
polynomial chaos; molecular dynamics; TIP4P water; surrogate model
ID MONTE-CARLO ALGORITHMS; POTENTIAL FUNCTIONS; ADAPTIVE MCMC; LIQUID
WATER; MODELS; ERGODICITY; TIP4P-EW; OUTPUTS
AB This paper explores the inference of small-scale, atomistic parameters, based on the specification of large, or macroscale, observables. Specifically, we focus on estimating a set of force-field parameters for the four-site, TIP4P, water model, based on a synthetic problem involving isothermal, isobaric molecular dynamics (MD) simulations of water at ambient conditions. We exploit the polynomial chaos (PC) expansions developed in Part I as surrogate representations of three macroscale observables, namely density, self-diffusion, and enthalpy, as a function of the force-field parameters. We analyze and discuss the use of two different PC representations in a Bayesian framework for the inference of atomistic parameters, based on synthetic observations of three macroscale observables. The first surrogate is a deterministic PC representation, constructed in Part I using nonintrusive spectral projection (NISP). An alternative strategy exploits a nondeterministic PC representation obtained using Bayesian inference of PC coefficients. We analyze the sensitivity of selected force-field parameters to the macroscale data, namely by exploiting the surrogate models to derive suitable "response" surfaces in the space of random parameters. The performance of both inference strategies is then examined in light of this analysis. The results show that each parameter is very sensitive to certain observables, while being only minimally affected by others. We show that a suitable choice of the observables allows us to recover the presumed "true" set of parameters with high accuracy even with low-order surrogate models.
C1 [Najm, H. N.; Debusschere, B. J.; Sargsyan, K.; Salloum, M.; Adalsteinsson, H.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Rizzi, F.; Knio, O. M.] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA.
RP Knio, OM (reprint author), Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA.
EM frizzi1@jhu.edu; hnnajm@sandia.gov; bjdebus@sandia.gov;
ksargsy@sandia.gov; mnsallo@sandia.gov; hadalst@sandia.gov;
omar.knio@duke.edu
FU U.S. Department of Energy, Office of Advanced Scientific Computing
Research [DE-SC0002506]; U.S. Department of Energy's National Nuclear
Security Administration [DE-AC04-94AL85000]
FX Received by the editors October 27, 2011; accepted for publication (in
revised form) August 21, 2012; published electronically December 12,
2012. This research was supported by the U.S. Department of Energy,
Office of Advanced Scientific Computing Research, under award
DE-SC0002506. Sandia National Laboratories is a multiprogram laboratory
managed and operated by Sandia Corporation, a wholly owned subsidiary of
Lockheed Martin Corporation, for the U.S. Department of Energy's
National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 37
TC 22
Z9 22
U1 0
U2 11
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1540-3459
EI 1540-3467
J9 MULTISCALE MODEL SIM
JI Multiscale Model. Simul.
PY 2012
VL 10
IS 4
BP 1460
EP 1492
DI 10.1137/110853170
PG 33
WC Mathematics, Interdisciplinary Applications; Physics, Mathematical
SC Mathematics; Physics
GA 059JU
UT WOS:000312702100013
ER
PT S
AU Buric, MP
Ohodnicki, PR
Duy, J
AF Buric, Michael P.
Ohodnicki, Paul R., Jr.
Duy, Janice
BE Dobisz, EA
Eldada, LA
TI Optical fiber evanescent absorption sensors for high-temperature gas
sensing in advanced coal-fired power plants
SO NANOENGINEERING: FABRICATION, PROPERTIES, OPTICS, AND DEVICES IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Nanoengineering - Fabrication, Properties, Optics, and
Devices IX
CY AUG 14-16, 2012
CL San Diego, CA
SP SPIE
DE localized surface plasmon resonance; fiber optic; high temperature; gas
sensing
ID SURFACE-PLASMON RESONANCE; NANOPARTICLE FILMS; WAVE ABSORPTION;
THIN-FILMS; SPECTROSCOPY; DEPENDENCE
AB Modern advanced energy systems such as coal-fired power plants, gasifiers, or similar infrastructure present some of the most challenging harsh environments for sensors. The power industry would benefit from new, ultra-high temperature devices capable of surviving in hot and corrosive environments for embedded sensing at the highest value locations. For these applications, we are currently exploring optical fiber evanescent wave absorption spectroscopy (EWAS) based sensors consisting of high temperature core materials integrated with novel high temperature gas sensitive cladding materials. Mathematical simulations can be used to assist in sensor development efforts, and we describe a simulation code that assumes a single thick cladding layer with gas sensitive optical constants. Recent work has demonstrated that Au nanoparticle-incorporated metal oxides show a potentially useful response for high temperature optical gas sensing applications through the sensitivity of the localized surface plasmon resonance absorption peak to ambient atmospheric conditions. Hence, the simulation code has been applied to understand how such a response can be exploited in an optical fiber based EWAS sensor configuration. We demonstrate that interrogation can be used to optimize the sensing response in such materials.
C1 [Buric, Michael P.] Natl Energy Technol Lab, Off Res & Dev, Morgantown, WV 26507 USA.
[Ohodnicki, Paul R., Jr.; Duy, Janice] United States Dept Energy, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
RP Buric, MP (reprint author), Natl Energy Technol Lab, Off Res & Dev, Morgantown, WV 26507 USA.
NR 17
TC 1
Z9 1
U1 0
U2 11
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9180-0
J9 PROC SPIE
PY 2012
VL 8463
AR 84630D
DI 10.1117/12.930015
PG 14
WC Nanoscience & Nanotechnology; Optics
SC Science & Technology - Other Topics; Optics
GA BDE65
UT WOS:000312959400006
ER
PT S
AU Drocco, J
Lopatina, LM
Reichhardt, C
Reichhardt, CJO
AF Drocco, J.
Lopatina, L. M.
Reichhardt, C.
Reichhardt, C. J. Olson
BE Dholakia, K
Spalding, GC
TI Dynamics of Self-Driven and Flocking Particles on Periodic Arrays
SO OPTICAL TRAPPING AND OPTICAL MICROMANIPULATION IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical Trapping and Optical Micromanipulation IX
CY AUG 12-16, 2012
CL San Diego, CA
SP SPIE
DE Active matter; ratchet effect; optical traps
ID VORTEX LATTICES; SUPERCONDUCTORS; BACTERIA; MOTORS
AB Recently there has been growing interest in what is called active matter, or collections of particles that are self driven rather than driven with an external field. Examples of such systems include swimming bacteria, flocks of birds or fish, and pedestrian flow. There have also been recent experimental realizations of self-driven systems using colloidal particles undergoing self-catalytic interactions. One example of this is light-induced catalysis where the colloids become self-driven in the presence of light. Almost all of these studies have been performed in the absence of a substrate. Here we examine how a substrate can be used to direct the motion of the particles. We demonstrate a self-induced ratchet effect that occurs in the presence of disorder as well as the direction of the particle along symmetry directions of the substrate. The type of substrate we consider may be created using various optical techniques, and studies of this system could lead to insights into the nonequilibrium behavior of active matter as well as to applications such as sorting of different active particle species or of active and non-active particles.
C1 [Drocco, J.; Lopatina, L. M.; Reichhardt, C.; Reichhardt, C. J. Olson] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Drocco, J (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
EM charlesr@cnls.lanl.gov
FU NNSA of the U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX This work was carried out under the auspices of the NNSA of the U.S.
Department of Energy at Los Alamos National Laboratory under Contract
No. DE-AC52-06NA25396.
NR 38
TC 1
Z9 1
U1 0
U2 10
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9175-6
J9 PROC SPIE
PY 2012
VL 8458
AR 84581I
DI 10.1117/12.931268
PG 9
WC Optics
SC Optics
GA BDF64
UT WOS:000313034500026
ER
PT S
AU Drocco, J
Reichhardt, C
Reichhardt, CJO
Bishop, AR
AF Drocco, J.
Reichhardt, C.
Reichhardt, C. J. Olson
Bishop, A. R.
BE Dholakia, K
Spalding, GC
TI Statics and dynamics of wetting-dewetting transitions for particles with
attractive interactions on periodic substrates
SO OPTICAL TRAPPING AND OPTICAL MICROMANIPULATION IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical Trapping and Optical Micromanipulation IX
CY AUG 12-16, 2012
CL San Diego, CA
SP SPIE
DE Optical trapping; commensurability; dynamic phases
ID SUPERCONDUCTORS
AB There are many examples of particle assemblies where the particles have competing repulsive and attractive interactions. In solid state systems, it has recently been proposed that exotic vortex states in type-I and type-II superconducting hybrids and type-1.5 superconductors fall into this category. In soft matter systems, competing interactions can arise for charged colloids with short range attraction or with multiple length scale interactions. Systems with competing interactions have been shown to exhibit a wide variety of patterns including stripes, labyrinths,bubbles,and crystalline phases. Although there has been considerable work analyzing these phases for different relative interaction strengths, there is little work on understanding what happens when such systems are driven over a periodic substrate. Such substrates for collective assemblies of particles could be created lithographically or using optical trap arrays and would introduce a new length scale into the system. Here we examine how a system with competing interactions behaves when interacting with a square periodic substrate. We find a novel wetting-dewetting phenomena similar to that of liquids on surfaces. In the presence of a strong substrate, the pattern formation normally found for particles with competing interactions is lost and the particles completely cover the substrate homogeneously. Under an applied drive, such a wetted system under goes a transition to a partially dewetted state with an isotropic transport and structural features.
C1 [Drocco, J.; Reichhardt, C.; Reichhardt, C. J. Olson; Bishop, A. R.] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
RP Drocco, J (reprint author), Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA.
EM charlesr@cnls.lanl.gov
FU NNSA of the U.S. Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]
FX This work was carried out under the auspics of the NNSA of the U.S.
Department of Energy at Los Alamos National Laboratory under Contract
No. DE-AC52-06NA25396.
NR 27
TC 0
Z9 0
U1 3
U2 23
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9175-6
J9 PROC SPIE
PY 2012
VL 8458
AR 84581J
DI 10.1117/12.931272
PG 8
WC Optics
SC Optics
GA BDF64
UT WOS:000313034500027
ER
PT S
AU Kassianov, E
Flynn, C
Redemann, J
Schmid, B
Russell, PB
Sinyuk, A
AF Kassianov, Evgueni
Flynn, Connor
Redemann, Jens
Schmid, Beat
Russell, Philip B.
Sinyuk, Alexander
BE Kassianov, EI
Comeron, A
Picard, RH
Schafer, K
Singh, UN
Pappalardo, G
TI Aerosol properties from multi-spectral and multi-angular aircraft 4STAR
observations: Expected advantages and challenges
SO REMOTE SENSING OF CLOUDS AND THE ATMOSPHERE XVII; AND LIDAR
TECHNOLOGIES, TECHNIQUES, AND MEASUREMENTS FOR ATMOSPHERIC REMOTE
SENSING VIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Remote Sensing of Clouds and the Atmosphere XVII - and
Lidar Technologies, Techniques and Measurements for Atmospheric Remote
Sensing VIII
CY SEP 24-27, 2012
CL Edinburgh, SCOTLAND
SP SPIE, SELEX GALILEO, THALES
DE Spectrometer for Sky-Scanning; Sun-Tracking Atmospheric Research
(4STAR); retrievals of aerosol microphysical and optical properties;
airborne multi-angular and multi-spectral measurements; sky radiance and
direct-beam sun transmittance; operational AERONET aerosol retrieval;
direct aerosol radiative forcing; sensitivity study
ID OPTICAL-PROPERTIES; VARIABILITY; AIRBORNE; AERONET; NETWORK
AB The airborne Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR) is developed to retrieve aerosol microphysical and optical properties from multi-angular and multi-spectral measurements of sky radiance and direct-beam sun transmittance. The necessarily compact design of the 4STAR may cause noticeable apparent enhancement of sky radiance at small scattering angles. We assess the sensitivity of expected 4STAR-based aerosol retrieval to such enhancement by applying the operational AERONET retrieval code and synthetic 4STAR-like data. Also, we assess the sensitivity of the broadband radiative fluxes and the direct aerosol radiative forcing to uncertainties in aerosol retrievals associated with the sky radiance enhancement. Our sensitivity study results suggest that the 4STAR-based aerosol retrieval has limitations in obtaining detailed information on particle size distribution and scattering phase function. However, these limitations have small impact on the retrieved bulk optical parameters, such as the asymmetry factor (up to 4%, or +/-0.02) and single-scattering albedo (up to 2%, or +/-0.02), and the calculated direct aerosol radiative forcing (up to 6%, or 2 Wm(-2)).
C1 [Kassianov, Evgueni; Flynn, Connor; Schmid, Beat] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kassianov, E (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
NR 13
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9274-6
J9 PROC SPIE
PY 2012
VL 8534
AR 85340J
DI 10.1117/12.974744
PG 7
WC Meteorology & Atmospheric Sciences; Remote Sensing; Optics
SC Meteorology & Atmospheric Sciences; Remote Sensing; Optics
GA BDE70
UT WOS:000312962800014
ER
PT S
AU Kassianov, E
Chand, D
Berg, L
Fast, J
Tomlinson, J
Ferrare, R
Hostetler, C
Hair, J
AF Kassianov, Evgueni
Chand, Duli
Berg, Larry
Fast, Jerome
Tomlinson, Jason
Ferrare, Richard
Hostetler, Chris
Hair, John
BE Kassianov, EI
Comeron, A
Picard, RH
Schafer, K
Singh, UN
Pappalardo, G
TI Multi-year Satellite and Surface Observations of AOD in support of
Two-Column Aerosol Project (TCAP) Field Campaign
SO REMOTE SENSING OF CLOUDS AND THE ATMOSPHERE XVII; AND LIDAR
TECHNOLOGIES, TECHNIQUES, AND MEASUREMENTS FOR ATMOSPHERIC REMOTE
SENSING VIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Remote Sensing of Clouds and the Atmosphere XVII - and
Lidar Technologies, Techniques and Measurements for Atmospheric Remote
Sensing VIII
CY SEP 24-27, 2012
CL Edinburgh, SCOTLAND
SP SPIE, SELEX GALILEO, THALES
DE multi-year aerosol measurements from ground and space; aerosol optical
depth; aerosol-layer altitude; ground-based AERONET measurements;
satellite-based passive and active aerosol remote sensing; airborne in
situ measurements and active remote sensing
ID CLOSURE
AB We use combined multi-year measurements from the surface and space for assessing the spatial and temporal distribution of aerosol properties within a large (similar to 400x400 km) region centered on Cape Cod, Massachusetts, along the East Coast of the United States. The ground-based Aerosol Robotic Network (AERONET) measurements at Martha's Vineyard Coastal Observatory (MVCO) site and Moderate Resolution Imaging Spectrometer (MODIS) sensors on board the Terra and Aqua satellites provide horizontal and temporal variations of aerosol optical depth, while the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) offers the altitudes of aerosol-layers. The combined ground-based and satellite measurements indicated several interesting features among which were the large differences in the aerosol properties observed in July and February. We applied the climatology of aerosol properties for designing the Two-Column Aerosol Project (TCAP), which is supported by the U.S. Department of Energy's (DOE's) Atmospheric Radiation Measurement (ARM) Program. The TCAP field campaign involves 12-month deployment (started July 1, 2012) of the ground-based ARM Mobile Facility (AMF) and Mobile Aerosol Observing System (MAOS) on Cape Cod and complimentary aerosol observations from two research aircraft: the DOE Gulfstream-1 (G-1) and the National Aeronautics and Space Administration (NASA) B200 King Air. Using results from the coordinated G-1 and B200 flights during the recent (July, 2012) Intensive Observation Period, we demonstrated that the G-1 in situ measurements and B200 active remote sensing can provide complementary information on the temporal and spatial changes of the aerosol properties off the coast of North America.
C1 [Kassianov, Evgueni; Chand, Duli; Berg, Larry; Fast, Jerome; Tomlinson, Jason] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Kassianov, E (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
RI Tomlinson, Jason/C-6566-2009
NR 13
TC 1
Z9 1
U1 1
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9274-6
J9 PROC SPIE
PY 2012
VL 8534
AR 853407
DI 10.1117/12.977862
PG 7
WC Meteorology & Atmospheric Sciences; Remote Sensing; Optics
SC Meteorology & Atmospheric Sciences; Remote Sensing; Optics
GA BDE70
UT WOS:000312962800004
ER
PT J
AU Yankov, A
Collins, B
Klein, M
Jessee, MA
Zwermann, W
Velkov, K
Pautz, A
Downar, T
AF Yankov, Artem
Collins, Benjamin
Klein, Markus
Jessee, Matthew A.
Zwermann, Winfried
Velkov, Kiril
Pautz, Andreas
Downar, Thomas
TI A Two-Step Approach to Uncertainty Quantification of Core Simulators
SO SCIENCE AND TECHNOLOGY OF NUCLEAR INSTALLATIONS
LA English
DT Article
AB For the multiple sources of error introduced into the standard computational regime for simulating reactor cores, rigorous uncertainty analysis methods are available primarily to quantify the effects of cross section uncertainties. Two methods for propagating cross section uncertainties through core simulators are the XSUSA statistical approach and the "two-step" method. The XSUSA approach, which is based on the SUSA code package, is fundamentally a stochastic sampling method. Alternatively, the two-step method utilizes generalized perturbation theory in the first step and stochastic sampling in the second step. The consistency of these two methods in quantifying uncertainties in the multiplication factor and in the core power distribution was examined in the framework of phase I-3 of the OECD Uncertainty Analysis in Modeling benchmark. With the Three Mile Island Unit 1 core as a base model for analysis, the XSUSA and two-step methods were applied with certain limitations, and the results were compared to those produced by other stochastic sampling-based codes. Based on the uncertainty analysis results, conclusions were drawn as to the method that is currently more viable for computing uncertainties in burnup and transient calculations.
C1 [Yankov, Artem; Collins, Benjamin; Downar, Thomas] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA.
[Klein, Markus; Zwermann, Winfried; Velkov, Kiril; Pautz, Andreas] Gesell Anlagen & Reaktorsicherheit GRS mbH, Reactor Safety Res Div, D-85748 Garching, Germany.
[Jessee, Matthew A.] Oak Ridge Natl Lab, Reactor & Nucl Syst Div, Oak Ridge, TN 37831 USA.
RP Yankov, A (reprint author), Univ Michigan, Dept Nucl Engn & Radiol Sci, 2355 Bonisteel Blvd, Ann Arbor, MI 48109 USA.
EM yankovai@umich.edu
OI Jessee, Matthew/0000-0003-2954-4995
FU German Ministry of Economics and Technology; US Nuclear Regulatory
Commission; U.S. Department of Energy [DE-AC05-00OR22725]
FX This work was supported by the German Ministry of Economics and
Technology and the US Nuclear Regulatory Commission. This paper has been
authored by UT-Battelle LLC under Contract no. DE-AC05-00OR22725 with
the U.S. Department of Energy. The United States Government retains and
the publisher, by accepting the paper for publication, acknowledges that
the United States Government retains a nonexclusive, paid-up,
irrevocable, world-wide license to publish or reproduce the published
form of this paper, or allow others to do so, for the United States
Government purposes.
NR 18
TC 1
Z9 1
U1 0
U2 6
PU HINDAWI PUBLISHING CORPORATION
PI NEW YORK
PA 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
SN 1687-6075
J9 SCI TECHNOL NUCL INS
JI Sci. Technol. Nucl. Install.
PY 2012
AR 767096
DI 10.1155/2012/767096
PG 9
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA 065XX
UT WOS:000313184700001
ER
PT J
AU Gerbner, D
Lemons, N
Palmer, C
Patkos, B
Szecsi, V
AF Gerbner, Daniel
Lemons, Nathan
Palmer, Cory
Patkos, Balazs
Szecsi, Vajk
TI ALMOST INTERSECTING FAMILIES OF SETS
SO SIAM JOURNAL ON DISCRETE MATHEMATICS
LA English
DT Article
DE extremal set theory; intersection theorems; Sperner-type theorems
ID FINITE SETS; DISJOINT PAIRS; SYSTEMS; THEOREMS; NUMBER
AB Let us write D-F(G) = {F is an element of F : F boolean AND G = circle divide} for a set G and a family F. Then a family F of sets is said to be (<= l)-almost intersecting (l-almost intersecting) if for any F is an element of F we have vertical bar D-F(F)vertical bar <= l (vertical bar D-F(F)vertical bar = l). In this paper we investigate the problem of finding the maximum size of an (<= l)-almost intersecting (l-almost intersecting) family F.
C1 [Palmer, Cory] Univ Illinois, Dept Math, Urbana, IL 61801 USA.
[Gerbner, Daniel; Patkos, Balazs] Hungarian Acad Sci, Alfred Renyi Inst Math, H-1364 Budapest, Hungary.
[Lemons, Nathan] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
[Szecsi, Vajk] Cent European Univ, Dept Math & Its Applicat, H-1051 Budapest, Hungary.
RP Palmer, C (reprint author), Univ Illinois, Dept Math, 1409 W Green St, Urbana, IL 61801 USA.
EM gerbner@renyi.hu; nlemons@gmail.com; ctpalmer@illinois.edu;
patkos@renyi.hu; szvajk@gmail.com
FU Hungarian National Scientific Fund [OTKA NK-78439, OTKA K-69062,
PD-83586]; Hungarian Academy of Sciences
FX The first, second, and third authors were supported by Hungarian
National Scientific Fund grant OTKA NK-78439.; The fourth author was
supported by Hungarian National Scientific Fund grants OTKA K-69062 and
PD-83586 and by the Janos Bolyai Research Scholarship of the Hungarian
Academy of Sciences.
NR 13
TC 4
Z9 4
U1 0
U2 5
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 0895-4801
J9 SIAM J DISCRETE MATH
JI SIAM Discret. Math.
PY 2012
VL 26
IS 4
BP 1657
EP 1669
DI 10.1137/120878744
PG 13
WC Mathematics, Applied
SC Mathematics
GA 059JG
UT WOS:000312700400011
ER
PT J
AU Peet, YT
Fischer, PF
AF Peet, Yulia T.
Fischer, Paul F.
TI STABILITY ANALYSIS OF INTERFACE TEMPORAL DISCRETIZATION IN GRID
OVERLAPPING METHODS
SO SIAM JOURNAL ON NUMERICAL ANALYSIS
LA English
DT Article
DE grid overlapping methods; temporal stability; explicit interface
extrapolation; backward-differentiation scheme; matrix analysis
ID UNSTEADY INCOMPRESSIBLE FLOWS; NAVIER-STOKES EQUATIONS; DIMENSIONS;
FRAMEWORK; SCHEMES
AB We investigate the stability of a temporal discretization of interface terms in grid overlapping methods. A matrix stability analysis is performed on a model problem of the one-dimensional diffusion equation on overlapping grids. The scheme stability is first analyzed theoretically, and a proof of the unconditional stability of the first-order interface extrapolation scheme with the first- and second-order time integration for any overlap size is presented. For the higher-order schemes, we obtain explicit estimates of the spectral radius of the corresponding discrete matrix operator and document the values of the stability threshold depending on the number of grid points and the size of overlap. The influence of iterations on stability properties is also investigated. Numerical experiments are then presented relating the obtained stability bounds to the observed numerical values. Semidiscrete analysis confirms the derived scaling for the stability bounds.
C1 [Peet, Yulia T.] Northwestern Univ, Dept Engn Sci & Appl Math, Evanston, IL 60208 USA.
[Peet, Yulia T.; Fischer, Paul F.] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA.
RP Peet, YT (reprint author), Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA.
EM ypeet@asu.edu; fischer@mcs.anl.gov
FU NSF RTG grant [DMS-0636574]; SHARP project of the U.S. Department of
Energy [DE-AC02-06CH11357]
FX Received by the editors April 18, 2011; accepted for publication (in
revised form) October 2, 2012; published electronically December 19,
2012. We acknowledge the financial support of this work by NSF RTG grant
DMS-0636574 and the SHARP project of the U.S. Department of Energy under
contract DE-AC02-06CH11357.
NR 43
TC 1
Z9 1
U1 0
U2 4
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 0036-1429
J9 SIAM J NUMER ANAL
JI SIAM J. Numer. Anal.
PY 2012
VL 50
IS 6
BP 3375
EP 3401
DI 10.1137/110831234
PG 27
WC Mathematics, Applied
SC Mathematics
GA 059VG
UT WOS:000312733000025
ER
PT J
AU Kannan, A
Shanbhag, UV
AF Kannan, Aswin
Shanbhag, Uday V.
TI DISTRIBUTED COMPUTATION OF EQUILIBRIA IN MONOTONE NASH GAMES VIA
ITERATIVE REGULARIZATION TECHNIQUES
SO SIAM JOURNAL ON OPTIMIZATION
LA English
DT Article
DE Nash games; variational inequalities; distributed algorithms; Tikhonov
regularization; proximal point; iterative regularization
ID PROXIMAL POINT ALGORITHM; UPLINK POWER-CONTROL;
VARIATIONAL-INEQUALITIES; NONCOOPERATIVE GAME; OPTICAL NETWORKS;
COMPLEMENTARITY-PROBLEMS; CONGESTION CONTROL; OSNR OPTIMIZATION;
FLOW-CONTROL; CONVERGENCE
AB We consider the development of single-timescale schemes for the distributed computation of equilibria associated with Nash games in which each player solves a convex program. Equilibria associated with such games are wholly captured by the solution set of a variational inequality. Our focus is on a class of games, termed monotone Nash games, that lead to monotone variational inequalities. Distributed extensions of standard approaches for solving such variational problems are characterized by two challenges: (1) Unless suitable assumptions (such as strong monotonicity) are imposed on the mapping arising in the specification of the variational inequality, iterative methods often require the solution of a sequence of regularized problems, a naturally two-timescale process that is harder to implement in practice. (2) Additionally, algorithm parameters for all players (such as steplengths and regularization parameters) have to be chosen centrally and communicated to all players; importantly, these parameters cannot be independently chosen by a player. Motivated by these shortcomings, we present two practically implementable distributed regularization schemes that work on a single timescale; specifically, each scheme requires precisely one gradient or projection step at every iteration. Of these, the first is an iterative Tikhonov regularization (ITR) scheme, while the second is an analogously constructed iterative proximal-point (IPP) method. Both schemes are characterized by the property that the regularization/centering parameter are updated after every iteration, rather than when one has approximately solved the regularized problem. To aid in distributed settings requiring limited coordination across players, the schemes allow players to select their parameters independently and do not insist on central prescription of such parameters. We conclude with an application of these schemes on a networked Cournot game with nonlinear prices.
C1 [Kannan, Aswin] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA.
[Shanbhag, Uday V.] Penn State Univ, Dept Ind & Mfg Engn, University Pk, PA 16802 USA.
RP Kannan, A (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM akannan@mcs.anl.gov; udaybag@psu.edu
FU NSF [CCF-0728863]; DOE [DE-SC0003879]
FX Received by the editors February 22, 2011; accepted for publication (in
revised form) April 25, 2012; published electronically October 2, 2012.
This work has been partially supported by NSF award CCF-0728863 and DOE
award DE-SC0003879, and a conference version appears as [19]. A subset
of this work was completed when both authors were in the Department of
Industrial and Enterprise Systems Engineering at the University of
Illinois.
NR 41
TC 8
Z9 8
U1 1
U2 1
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1052-6234
J9 SIAM J OPTIMIZ
JI SIAM J. Optim.
PY 2012
VL 22
IS 4
BP 1177
EP 1205
DI 10.1137/110825352
PG 29
WC Mathematics, Applied
SC Mathematics
GA 059VT
UT WOS:000312734300001
ER
PT J
AU Boggs, PT
Gay, DM
Griffiths, SK
Lewis, RM
Long, KR
Nash, S
Nilson, RH
AF Boggs, Paul T.
Gay, David M.
Griffiths, Stewart K.
Lewis, Robert Michael
Long, Kevin R.
Nash, Stephen
Nilson, Robert H.
TI OPTIMIZATION ALGORITHMS FOR HIERARCHICAL PROBLEMS WITH APPLICATION TO
NANOPOROUS MATERIALS
SO SIAM JOURNAL ON OPTIMIZATION
LA English
DT Article
DE multigrid optimization; multilevel optimization; nonlinear optimization;
complex hierarchical optimization
ID NANOSTRUCTURED MATERIALS
AB We present optimization algorithms for the design of complex hierarchical systems, motivated by applications to the design of nanoporous materials. Nanoporous materials have a broad range of engineering applications, including gas storage and filtration, electrical energy storage in batteries and capacitors, and catalysis. The design of such materials involves modeling of the material over many length scales, leading to a hierarchy of mathematical models. Our algorithms are also hierarchical in structure with the goal of exploiting the model hierarchy to obtain solutions more rapidly. We discuss the choice of optimization models, initialization schemes, the hierarchical optimization algorithm, software design, and computational results.
C1 [Boggs, Paul T.; Griffiths, Stewart K.; Nilson, Robert H.] Sandia Natl Labs, Computat Sci & Math Res, Livermore, CA 94551 USA.
[Gay, David M.] AMPL Optimizat, Albuquerque, NM 87103 USA.
[Lewis, Robert Michael] Coll William & Mary, Dept Math, Williamsburg, VA 23187 USA.
[Long, Kevin R.] Texas Tech Univ, Dept Math, Lubbock, TX 79409 USA.
[Nash, Stephen] George Mason Univ, SEOR Dept, Fairfax, VA 22030 USA.
RP Boggs, PT (reprint author), Sandia Natl Labs, Computat Sci & Math Res, Livermore, CA 94551 USA.
EM ptboggs@sandia.gov; dmg@ampl.com; skgriff@sandia.gov; rmlewi@wm.edu;
kevin.long@ttu.edu; snash@gmu.edu; rhnilso@sandia.gov
OI Nash, Stephen/0000-0002-7412-1791
FU Department of Energy Office of Advanced Scientific Computing Research
[10-014804]
FX Received by the editors August 15, 2011; accepted for publication (in
revised form) July 6, 2012; published electronically October 9, 2012.
This work was supported by the Department of Energy Office of Advanced
Scientific Computing Research under contract 10-014804.
NR 38
TC 4
Z9 4
U1 0
U2 11
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1052-6234
EI 1095-7189
J9 SIAM J OPTIMIZ
JI SIAM J. Optim.
PY 2012
VL 22
IS 4
BP 1285
EP 1308
DI 10.1137/110856411
PG 24
WC Mathematics, Applied
SC Mathematics
GA 059VT
UT WOS:000312734300005
ER
PT J
AU Appelo, D
Petersson, NA
AF Appeloe, Daniel
Petersson, N. Anders
TI A FOURTH-ORDER ACCURATE EMBEDDED BOUNDARY METHOD FOR THE WAVE EQUATION
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE wave equation; embedded boundary; finite differences
ID FINITE-DIFFERENCE SCHEMES; HIGH-ORDER DISCRETIZATION; ELASTIC-WAVES;
EVOLUTION; APPROXIMATIONS; FREQUENCIES; DIMENSIONS; FLOW
AB A fourth-order accurate embedded boundary method for the scalar wave equation with Dirichlet or Neumann boundary conditions is described. The method is based on a compact Pade-type discretization of spatial derivatives together with a Taylor series method (modified equation) in time. A novel approach for enforcing boundary conditions is introduced which uses interior boundary points instead of exterior ghost points. This technique removes the small-cell stiffness problem for both Dirichlet and Neumann boundary conditions, is more accurate and robust than previous methods based on exterior ghost points, and guarantees that the solution is single-valued when slender bodies are treated. Numerical experiments are presented to illustrate the stability and accuracy of the method as well as its application to problems with complex geometries.
C1 [Appeloe, Daniel] Univ New Mexico, Dept Math & Stat, Albuquerque, NM 87131 USA.
[Petersson, N. Anders] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA.
RP Appelo, D (reprint author), Univ New Mexico, Dept Math & Stat, Albuquerque, NM 87131 USA.
EM appelo@unm.edu; petersson1@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX This author's work was performed under the auspices of the U.S.
Department of Energy by Lawrence Livermore National Laboratory under
contract DE-AC52-07NA27344. This is contribution LLNL-JRNL-417163.
NR 31
TC 0
Z9 0
U1 3
U2 8
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2012
VL 34
IS 6
BP A2982
EP A3008
DI 10.1137/09077223X
PG 27
WC Mathematics, Applied
SC Mathematics
GA 059XC
UT WOS:000312737900007
ER
PT J
AU Kolev, TV
Vassilevski, PS
AF Kolev, Tzanio V.
Vassilevski, Panayot S.
TI PARALLEL AUXILIARY SPACE AMG SOLVER FOR H(div) PROBLEMS
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE parallel algebraic multigrid; H(div) problems; Raviart-Thomas elements;
auxiliary space preconditioning
ID FINITE-ELEMENT METHODS; STOKES EQUATIONS; H(CURL); PRECONDITIONERS;
REGULARIZATION; APPROXIMATION; DOMAINS
AB In this paper we present a family of scalable preconditioners for matrices arising in the discretization of H(div) problems using the lowest order Raviart-Thomas finite elements. Our approach belongs to the class of "auxiliary space"-based methods and requires only the finite element stiffness matrix plus some minimal additional discretization information about the topology and orientation of mesh entities. We provide a detailed algebraic description of the theory, parallel implementation, and different variants of this parallel auxiliary space divergence solver (ADS) and discuss its relations to the Hiptmair-Xu (HX) auxiliary space decomposition of H(div) [SIAM J. Numer. Anal., 45 (2007), pp. 2483-2509] and to the auxiliary space Maxwell solver AMS [J. Comput. Math., 27 (2009), pp. 604-623]. An extensive set of numerical experiments demonstrates the robustness and scalability of our implementation on large-scale H(div) problems with large jumps in the material coefficients.
C1 [Kolev, Tzanio V.; Vassilevski, Panayot S.] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA.
RP Kolev, TV (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA.
EM tzanio@llnl.gov; panayot@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344 (LLNL-JRNL-520391)]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344 (LLNL-JRNL-520391). The U.S. Government retains a
nonexclusive, royalty-free license to publish or reproduce the published
form of this contribution, or allow others to do so, for U. S.
Government purposes. Copyright is owned by SIAM to the extent not
limited by these rights.
NR 48
TC 8
Z9 8
U1 0
U2 3
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2012
VL 34
IS 6
BP A3079
EP A3098
DI 10.1137/110859361
PG 20
WC Mathematics, Applied
SC Mathematics
GA 059XC
UT WOS:000312737900012
ER
PT J
AU Bui-Thanh, T
Ghattas, O
Higdon, D
AF Tan Bui-Thanh
Ghattas, Omar
Higdon, David
TI ADAPTIVE HESSIAN-BASED NONSTATIONARY GAUSSIAN PROCESS RESPONSE SURFACE
METHOD FOR PROBABILITY DENSITY APPROXIMATION WITH APPLICATION TO
BAYESIAN SOLUTION OF LARGE-SCALE INVERSE PROBLEMS
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE probability density approximation; Gaussian process; response surface;
adaptive sampling; computer experimental design; nonstationary; curse of
dimensionality; Bayesian inversion; covariance function; membership
probability; adjoint; Hessian
ID PDE-CONSTRAINED OPTIMIZATION; SPATIAL COVARIANCE STRUCTURE; ACTIVE DATA
SELECTION; KRYLOV-SCHUR METHODS; UNCERTAINTY QUANTIFICATION;
MODEL-REDUCTION; CALIBRATION; ALGORITHMS; DESIGN; SOLVER
AB We develop an adaptive Hessian-based non-stationary Gaussian process (GP) response surface method for approximating a probability density function (pdf) that exploits its structure, particularly the Hessian of its negative logarithm. Of particular interest to us are pdfs that arise from the Bayesian solution of large-scale inverse problems, which imply very expensive-to-evaluate pdfs. The method can be considered as a piecewise adaptive Gaussian approximation in which a Gaussian tailored to the local Hessian of the negative log probability density is constructed for each subregion in high dimensional parameter space. The task of efficiently partitioning the parameter space into subregions is done implicitly through Hessian-informed membership probability functions. The GP machinery is then employed to glue all local Gaussian approximations into a global analytical response surface that is far cheaper to evaluate than the original expensive probability density. The resulting response surface is also equipped with an analytical variance estimate that can be used to assess the uncertainty of the approximation. One of the key components of our proposed approach is an adaptive sampling strategy for exploring the parameter space efficiently during the computer experimental design step, which aims to find training points with high probability density. The detailed construction and an analysis of the method are presented. We then demonstrate the accuracy and efficiency of the proposed method on several example problems, including inverse shape electromagnetic scattering in 24-dimensional parameter space.
C1 [Tan Bui-Thanh] Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA.
[Ghattas, Omar] Univ Texas Austin, Jackson Sch Geosci, Austin, TX 78712 USA.
[Ghattas, Omar] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA.
[Higdon, David] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Bui-Thanh, T (reprint author), Univ Texas Austin, Inst Computat Engn & Sci, Austin, TX 78712 USA.
EM buithanhtan2000@yahoo.com; OMAR@ices.utexas.edu; dhigdon@lanl.gov
FU AFOSR [FA9550-09-1-0608]; DOE [DE-SC0002710, DE-FC52-08NA28615,
DEFC02-06ER25782]; NSF [CMS-1028889, OPP-0941678, DMS-0724746,
CMS-0619078]
FX This research was supported by AFOSR grant FA9550-09-1-0608; DOE grants
DE-SC0002710, DE-FC52-08NA28615, and DEFC02-06ER25782; and NSF grants
CMS-1028889, OPP-0941678, DMS-0724746, and CMS-0619078.
NR 68
TC 6
Z9 6
U1 1
U2 12
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
EI 1095-7197
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2012
VL 34
IS 6
BP A2837
EP A2871
DI 10.1137/110851419
PG 35
WC Mathematics, Applied
SC Mathematics
GA 059XC
UT WOS:000312737900001
ER
PT J
AU Wang, B
Miller, G
Colella, P
AF Wang, Bei
Miller, Greg
Colella, Phil
TI AN ADAPTIVE, HIGH-ORDER PHASE-SPACE REMAPPING FOR THE TWO DIMENSIONAL
VLASOV-POISSON EQUATIONS
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE particle-in-cell (PIC) methods; adaptive mesh refinement; phase-space
remapping; numerical noise; two dimensional Vlasov-Poisson equation;
parallel scalability
ID PARTICLE-IN-CELL; NUMERICAL-SIMULATION; HYDRODYNAMICS; PLASMAS; FLOWS;
BEAMS
AB The numerical solution of the high dimensional Vlasov equation is usually performed by particle-in-cell (PIC) methods. However, due to numerical noise, it is challenging to use PIC methods to get a precise description of the distribution function in phase space. To control the numerical error, we introduce an adaptive phase-space remapping which regularizes the particle distribution by periodically reconstructing the distribution function on a hierarchy of phase-space grids with high-order interpolations. The positivity of the distribution function can be preserved using a local redistribution technique. While the one dimensional algorithm has been well established [B. Wang, G. Miller, and P. Colella, SIAM J. Sci. Comput., 33 (2011), pp. 3509-3537], we present the two dimensional algorithm and its parallel implementation in this paper. A performance study of the parallel implementation is included. We discuss the scalability of the algorithm on massively parallel computers.
C1 [Wang, Bei] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA.
[Miller, Greg] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA.
[Colella, Phil] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Appl Numer Algorithms Grp, Berkeley, CA 94720 USA.
RP Wang, B (reprint author), Princeton Univ, Princeton Inst Computat Sci & Engn, Princeton, NJ 08540 USA.
EM beiwang@princeton.edu; grgmiller@ucdavis.edu; colella@hpcrdm.lbl.gov
RI Wang, Bei/G-4605-2014
OI Wang, Bei/0000-0003-4942-9652
FU U.S. Department of Energy Office of Advanced Scientific Computing
Research at Lawrence Berkeley National Laboratory [DE-AC02-05CH11231];
U.S. Department of Energy Office of Science [DE-AC03-76SF00098]; DOE
[DE-SC0001981]
FX This work was supported by the U.S. Department of Energy Office of
Advanced Scientific Computing Research under contract number
DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory and it used
resources of the National Energy Research Scientific Computing center,
which is supported by the U.S. Department of Energy Office of Science
under contract number DE-AC03-76SF00098.; This author's work was
supported by DOE contract number DE-SC0001981.
NR 33
TC 3
Z9 3
U1 1
U2 3
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2012
VL 34
IS 6
BP B909
EP B924
DI 10.1137/120872954
PG 16
WC Mathematics, Applied
SC Mathematics
GA 059XC
UT WOS:000312737900021
ER
PT J
AU Haidar, A
Ltaief, H
Dongarra, J
AF Haidar, Azzam
Ltaief, Hatem
Dongarra, Jack
TI TOWARD A HIGH PERFORMANCE TILE DIVIDE AND CONQUER ALGORITHM FOR THE
DENSE SYMMETRIC EIGENVALUE PROBLEM
SO SIAM JOURNAL ON SCIENTIFIC COMPUTING
LA English
DT Article
DE divide and conquer; symmetric eigenvalue solver; tile algorithms;
dynamic scheduling
ID TRIDIAGONAL EIGENPROBLEM; RESTRICTED RANK; MATRICES; EIGENVECTORS;
PERTURBATIONS; FACTORIZATION
AB Classical solvers for the dense symmetric eigenvalue problem suffer from the first step, which involves a reduction to tridiagonal form that is dominated by the cost of accessing memory during the panel factorization. The solution is to reduce the matrix to a banded form, which then requires the eigenvalues of the banded matrix to be computed. The standard divide and conquer algorithm can be modified for this purpose. The paper combines this insight with tile algorithms that can be scheduled via a dynamic runtime system to multicore architectures. A detailed analysis of performance and accuracy is included. Performance improvements of 14-fold and 4-fold speedups are reported relative to LAPACK and Intel's Math Kernel Library.
C1 [Haidar, Azzam; Dongarra, Jack] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
[Ltaief, Hatem] KAUST Supercomp Lab, Thuwal, Saudi Arabia.
[Dongarra, Jack] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN USA.
[Dongarra, Jack] Univ Manchester, Sch Math, Manchester, Lancs, England.
[Dongarra, Jack] Univ Manchester, Sch Comp Sci, Manchester, Lancs, England.
RP Haidar, A (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA.
EM haidar@eecs.utk.edu; Hatem.Ltaief@kaust.edu.sa; dongarra@eecs.utk.edu
RI Dongarra, Jack/E-3987-2014;
OI Ltaief, Hatem/0000-0002-6897-1095
FU National Science Foundation; Department of Energy; Microsoft Research
FX This work was partially supported by the National Science Foundation,
Department of Energy, and Microsoft Research.
NR 44
TC 3
Z9 3
U1 0
U2 2
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1064-8275
J9 SIAM J SCI COMPUT
JI SIAM J. Sci. Comput.
PY 2012
VL 34
IS 6
BP C249
EP C274
DI 10.1137/110823699
PG 26
WC Mathematics, Applied
SC Mathematics
GA 059XC
UT WOS:000312737900022
ER
PT S
AU Honscheid, K
Elliott, A
Annis, J
Bonati, M
Buckley-Geer, E
Castander, F
Dacosta, L
Fausti, A
Karliner, I
Kuhlmann, S
Neilsen, E
Patton, K
Reil, K
Roodman, A
Thaler, J
Serrano, S
Santos, MS
Suchyta, E
AF Honscheid, K.
Elliott, A.
Annis, J.
Bonati, M.
Buckley-Geer, E.
Castander, F.
daCosta, L.
Fausti, A.
Karliner, I.
Kuhlmann, S.
Neilsen, E.
Patton, K.
Reil, K.
Roodman, A.
Thaler, J.
Serrano, S.
Santos, M. Soares
Suchyta, E.
CA Dark Energy Survey Collaboration
BE Radziwill, NM
Chiozzi, G
TI The Readout and Control System of the Dark Energy Camera
SO SOFTWARE AND CYBERINFRASTRUCTURE FOR ASTRONOMY II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference On Software and Cyberinfrastructure for Astronomy II
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Dark Energy Survey; DECam; data acquisition; control system; camera;
survey; Blanco; CTIO
AB The Dark Energy Camera (DECam) is a new 520 Mega Pixel CCD camera with a 3 square degree field of view designed for the Dark Energy Survey (DES). DES is a high precision, multi-bandpass, photometric survey of 5000 square degrees of the southern sky. DECam is currently being installed at the prime focus of the Blanco 4-m telescope at the Cerro-Tololo International Observatory (CTIO). In this paper we describe SISPI, the data acquisition and control system of the Dark Energy Camera. SISPI is implemented as a distributed multi-processor system with a software architecture based on the Client-Server and Publish-Subscribe design patterns. The underlying message passing protocol is based on PYRO, a powerful distributed object technology system written entirely in Python. A distributed shared variable system was added to support exchange of telemetry data and other information between different components of the system. We discuss the SISPI infrastructure software, the image pipeline, the observer console and user interface architecture, image quality monitoring, the instrument control system, and the observation strategy tool.
C1 [Honscheid, K.; Elliott, A.; Patton, K.; Suchyta, E.] Ohio State Univ, Columbus, OH 43210 USA.
[Annis, J.; Buckley-Geer, E.; Neilsen, E.; Santos, M. Soares] Fermilab Natl Accelerator Lab, Batavia, IL USA.
[Bonati, M.] Nat Optic Astron Observatories, Tucson, AZ USA.
[Castander, F.; Serrano, S.] IEEC, Barcelona, Spain.
[daCosta, L.; Fausti, A.] Observatorio Natl, Rio De Janeiro, Brazil.
[Thaler, J.] Univers Illinois, Urbana, IL USA.
[Kuhlmann, S.] Argonne Natl Lab, Chicago, IL USA.
[Reil, K.; Roodman, A.] SLAC, Menlo Pk, CA USA.
RP Honscheid, K (reprint author), Ohio State Univ, Columbus, OH 43210 USA.
RI De Vicente, Juan/H-3242-2015;
OI De Vicente, Juan/0000-0001-8318-6813; Suchyta, Eric/0000-0002-7047-9358
FU U.S. Department of Energy; U.S. National Science Foundation; Ministry of
Science and Education of Spain; Science and Technology Facilities
Council of the United Kingdom; Science and Technology Facilities Council
of the United Kingdom, the Higher Education Funding Council for England;
National Center for Supercomputing Applications at the University of
Illinois at Urbana-Champaign; Kavli Institute of Cosmological Physics at
the University of Chicago; Financiadora de Estudos e Projetos; Fundacao
Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro;
Conselho Nacional de Desenvolvimento Cientfico e Tecnologico and the
Ministerio da Ciencia e Tecnologia; Deutsche Forschungsgemeinschaft;
Argonne National Laboratories; University of California at Santa Cruz;
University of Cambridge; Centro de Investigaciones Energeticas;
Medioambientales y Tecnologicas-Madrid; University of Chicago;
University College London; DES-Brazil; Fermilab; University of
Edinburgh; University of Illinois at Urbana-Champaign; Institut de
Ciencies de l'Espai (IEEC/ CSIC); Institut de Fisica d'Altes Energies;
Lawrence Berkeley National Laboratory; Ludwig-Maximilians Universitat
and the associated Excellence Cluster Universe; University of Michigan;
National Optical Astronomy Observatory; Ohio State University;
University of Pennsylvania; University of Portsmouth; SLAC; Stanford
University; University of Sussex; Texas AM University
FX Funding for the DES Projects has been provided by the U.S. Department of
Energy, the U.S. National Science Foundation, the Ministry of Science
and Education of Spain, the Science and Technology Facilities Council of
the United Kingdom, the Higher Education Funding Council for England,
the National Center for Supercomputing Applications at the University of
Illinois at Urbana-Champaign, the Kavli Institute of Cosmological
Physics at the University of Chicago, Financiadora de Estudos e
Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do
Rio de Janeiro, Conselho Nacional de Desenvolvimento Cientfico e
Tecnologico and the Ministerio da Ciencia e Tecnologia, the Deutsche
Forschungsgemeinschaft and the Collaborating Institutions in the Dark
Energy Survey.; The Collaborating Institutions are Argonne National
Laboratories, the University of California at Santa Cruz, the University
of Cambridge, Centro de Investigaciones Energeticas, Medioambientales y
Tecnologicas-Madrid, the University of Chicago, University College
London, DES-Brazil, Fermilab, the University of Edinburgh, the
University of Illinois at Urbana-Champaign, the Institut de Ciencies de
l'Espai (IEEC/ CSIC), the Institut de Fisica d'Altes Energies, the
Lawrence Berkeley National Laboratory, the Ludwig-Maximilians
Universitat and the associated Excellence Cluster Universe, the
University of Michigan, the National Optical Astronomy Observatory, the
University of Nottingham, the Ohio State University, the University of
Pennsylvania, the University of Portsmouth, SLAC, Stanford University,
the University of Sussex, and Texas A&M University.
NR 8
TC 5
Z9 5
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9152-7
J9 PROC SPIE
PY 2012
VL 8451
AR 845112
DI 10.1117/12.925717
PG 15
WC Astronomy & Astrophysics; Computer Science, Software Engineering; Optics
SC Astronomy & Astrophysics; Computer Science; Optics
GA BDD99
UT WOS:000312888700037
ER
PT S
AU Kubanek, P
Prouza, M
Kotov, I
O'Connor, P
Doherty, P
Frank, J
AF Kubanek, Petr
Prouza, Michael
Kotov, Ivan
O'Connor, Paul
Doherty, Peter
Frank, James
BE Radziwill, NM
Chiozzi, G
TI Use of RTS2 for LSST multiple channel CCD characterisation
SO SOFTWARE AND CYBERINFRASTRUCTURE FOR ASTRONOMY II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference On Software and Cyberinfrastructure for Astronomy II
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE observatory software; CCD testing; LSST
AB RTS2, or Remote Telescope System 2nd Version, is a modular observatory control system. Development of RTS2 began in 2003 and since then it has been used at more than 20 observatories world-wide. Its main users are small, fully autonomous observatories, performing target of opportunity observations.
Since June 2007 RTS2 has been used at Brookhaven National Laboratory (BNL) to control the acquisition of images for the Large Synoptic Survey Telescope (LSST) CCD characterisation. The CCD test laboratory includes multiple devices which need to be controlled in order to perform the electro-optical testing of the CCD. The configuration of the devices must be recorded in order for that information to be used later during data analysis.
The main factors leading to use of RTS2 were its availability, open - source code, and modular design which allows its fast customisation to fit changing needs of a R&D project.
This article focuses on the description of changes to the system which allow for the integration of LSST's multiple output CCD imagers. The text provides details of the multiple channel implementation, which parts of the system were affected, and how these changes influenced overall system design. It also describes how easy and fast it was to run the multiple channel instrument on night and twilight sky during prototype CCD testing, and demonstrates how the complex routines, such as twilight skyflats acquisitions, worked out of the box.
C1 [Kubanek, Petr; Prouza, Michael] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
[Kotov, Ivan; O'Connor, Paul; Frank, James] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Doherty, Peter] Harvard Univ, Cambridge, MA 02138 USA.
RP Kubanek, P (reprint author), Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic.
EM kubanek@fzu.cz
RI Kubanek, Petr/G-7209-2014; Prouza, Michael/F-8514-2014
OI Prouza, Michael/0000-0002-3238-9597
FU KONTAKT of the Ministry of Education, Youth and Sports of the Czech
Republic [ME09052]; EU [283783]; National Science Foundation [0809409];
Department of Energy with SLAC National Accelerator Laboratory
[DE-AC02-76-SFO0515]; MDM
FX PK and MP would like to acknowledge grant ME09052 of program KONTAKT of
the Ministry of Education, Youth and Sports of the Czech Republic and EU
grant project GLORIA No.283783(FP7-Capacities).This manuscript has been
co-authored by employees of Brookhaven Science Associates, LLC. LSST
project activities are supported in part by the National Science
Foundation through Governing Cooperative Agreement 0809409 managed by
the Association of Universities for Research in Astronomy (AURA),and the
Department of Energy under contract DE-AC02-76-SFO0515 with the SLAC
National Accelerator Laboratory. Additional LSST funding comes from
private donations, grants to universities, and in-kind support from
LSSTC Institutional Members. Data were obtained in part using the 1.3m
McGraw-Hill Telescope of the MDM Observatory. We would like to
acknowledge Bob Barrof the MDM observatory for his excellent support
before, during and after MDM tests. We are thankful to LSST internal
reviewers (notably Jon Thaler) for comments and suggestions.
NR 11
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Z9 1
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9152-7
J9 PROC SPIE
PY 2012
VL 8451
AR 84512T
DI 10.1117/12.926929
PG 12
WC Astronomy & Astrophysics; Computer Science, Software Engineering; Optics
SC Astronomy & Astrophysics; Computer Science; Optics
GA BDD99
UT WOS:000312888700090
ER
PT S
AU Maire, J
Perrin, MD
Doyon, R
Chilcote, J
Larkin, JE
Weiss, JL
Marois, C
Konopacky, QM
Millar-Blanchaer, M
Graham, JR
Dunn, J
Galicher, R
Marchis, F
Wiktorowicz, SJ
Labrie, K
Thomas, SJ
Goodsell, SJ
Rantakyro, FT
Palmer, DW
Macintosh, BA
AF Maire, Jerome
Perrin, Marshall D.
Doyon, Rene
Chilcote, Jeffrey
Larkin, James E.
Weiss, Jason L.
Marois, Christian
Konopacky, Quinn M.
Millar-Blanchaer, Maxwell
Graham, James R.
Dunn, Jennifer
Galicher, Raphael
Marchis, Franck
Wiktorowicz, Sloane J.
Labrie, Kathleen
Thomas, Sandrine J.
Goodsell, Stephen J.
Rantakyro, Fredrik T.
Palmer, David W.
Macintosh, Bruce A.
BE Radziwill, NM
Chiozzi, G
TI Test results for the Gemini Planet Imager data reduction pipeline
SO SOFTWARE AND CYBERINFRASTRUCTURE FOR ASTRONOMY II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference On Software and Cyberinfrastructure for Astronomy II
CY JUL 01-04, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Data reduction pipeline; speckle suppression; exoplanets; high contrast
imaging
ID HR 8799; STAR; MASS
AB The Gemini Planet Imager (GPI) is a new facility instrument for the Gemini Observatory designed to detect and characterize planets and debris disks orbiting nearby stars; its science camera is a near infrared integral field spectrograph. We have developed a data pipeline for this instrument, which will be made publicly available to the community. The GPI data reduction pipeline (DRP) incorporates all necessary image reduction and calibration steps for high contrast imaging in both the spectral and polarimetric modes, including datacube generation, wavelength solution, astrometric and photometric calibrations, and speckle suppression via ADI and SSDI algorithms. It is implemented in IDL as a flexible modular system, and includes both command line and graphical interface tools including a customized viewer for GPI datacubes.
This GPI data reduction pipeline is currently working very well, and is in use daily processing data during the instrument's ongoing integration and test period at UC Santa Cruz. Here we summarize the results from recent pipeline tests, and present reductions of instrument test data taken with GPI. We will continue to refine and improve these tools throughout the rest of GPI's testing and commissioning, and they will be released to the community, including both IDL source code and compiled versions that can be used without an IDL license.
C1 [Maire, Jerome; Konopacky, Quinn M.; Millar-Blanchaer, Maxwell; Graham, James R.] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada.
[Perrin, Marshall D.] Space Telescope Sci Inst, Baltimore, MD 21218 USA.
[Doyon, Rene; Galicher, Raphael] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada.
[Larkin, James E.; Weiss, Jason L.] UCLA Div Astron, Los Angeles, CA 90095 USA.
[Marois, Christian; Dunn, Jennifer; Galicher, Raphael] Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada.
[Marchis, Franck; Wiktorowicz, Sloane J.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA.
[Labrie, Kathleen; Thomas, Sandrine J.; Goodsell, Stephen J.] Gemini Observ, Hilo, HI USA.
[Rantakyro, Fredrik T.] AURA, Gemini, Gemini Observ, La Serena, Chile.
[Palmer, David W.; Macintosh, Bruce A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Maire, J (reprint author), Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada.
EM maire@di.utoronto.ca; mperrin@stsci.edu
NR 16
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9152-7
J9 PROC SPIE
PY 2012
VL 8451
AR 84513G
DI 10.1117/12.926202
PG 11
WC Astronomy & Astrophysics; Computer Science, Software Engineering; Optics
SC Astronomy & Astrophysics; Computer Science; Optics
GA BDD99
UT WOS:000312888700109
ER
PT S
AU Soufli, R
Fernandez-Perea, M
Robinson, JC
Baker, SL
Alameda, J
Gullikson, EM
AF Soufli, Regina
Fernandez-Perea, Monica
Robinson, Jeff C.
Baker, Sherry L.
Alameda, Jennifer
Gullikson, Eric M.
BE Takahashi, T
Murray, SS
DenHerder, JWA
TI Corrosion-resistant, high-reflectance Mg/SiC multilayer coatings for
solar physics in the 25-80 nm wavelength region
SO SPACE TELESCOPES AND INSTRUMENTATION 2012: ULTRAVIOLET TO GAMMA RAY
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Space Telescopes and Instrumentation 2012 - Ultraviolet to
Gamma Ray
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE Mg/SiC multilayers; corrosion; EUV reflectance measurements; solar
physics
ID ULTRAVIOLET; REFLECTIVITY; LIGHT
AB The corrosion mechanisms in Mg/SiC multilayers have been elucidated and corrosion-resistant Mg/SiC multilayer coatings have been demonstrated using spontaneously intermixed Al-Mg corrosion barrier layers. The corrosion-resistant Mg/SiC multilayers can achieve high reflectance simultaneously in up to three narrow wavelength bands within the 25-80 nm wavelength region, making them attractive candidates for solar physics instrumentation and for other applications.
C1 [Soufli, Regina; Fernandez-Perea, Monica; Robinson, Jeff C.; Baker, Sherry L.; Alameda, Jennifer] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Soufli, R (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM regina.soufli@llnl.gov
NR 21
TC 1
Z9 1
U1 1
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9144-2
J9 PROC SPIE
PY 2012
VL 8443
AR 84433R
DI 10.1117/12.926589
PG 6
WC Engineering, Aerospace; Instruments & Instrumentation; Optics
SC Engineering; Instruments & Instrumentation; Optics
GA BDA92
UT WOS:000312391600108
ER
PT S
AU Soufli, R
Spiller, E
Windt, DL
Robinson, JC
Gullikson, EM
Rodriguez-de Marcos, L
Fernandez-Perea, M
Baker, SL
Aquila, AL
Dollar, FJ
Mendez, JA
Larruquert, JI
Golub, L
Boerner, P
AF Soufli, Regina
Spiller, Eberhard
Windt, David L.
Robinson, Jeff C.
Gullikson, Eric M.
Rodriguez-de Marcos, Luis
Fernandez-Perea, Monica
Baker, Sherry L.
Aquila, Andrew L.
Dollar, Franklin J.
Antonio Mendez, Jose
Larruquert, Juan I.
Golub, Leon
Boerner, Paul
BE Takahashi, T
Murray, SS
DenHerder, JWA
TI In-band and out-of-band reflectance calibrations of the EUV multilayer
mirrors of the Atmospheric Imaging Assembly instrument aboard the Solar
Dynamics Observatory
SO SPACE TELESCOPES AND INSTRUMENTATION 2012: ULTRAVIOLET TO GAMMA RAY
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Space Telescopes and Instrumentation 2012 - Ultraviolet to
Gamma Ray
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE EUV multilayers; reflectance measurements; Solar Dynamics Observatory;
Atmospheric Imaging Assembly
ID ABSOLUTE PHOTOABSORPTION MEASUREMENTS; EXTREME-ULTRAVIOLET LITHOGRAPHY;
X-RAY REGION; OPTICAL-CONSTANTS; THIN-FILMS; ENERGY REGION; SI; YTTRIUM;
SILICON; 1216-A
AB Experimental multilayer reflectance data on flight mirrors and witnesses for three extreme ultraviolet (EUV) channels of the Atmospheric Imaging Assembly (AIA) instrument aboard NASA's Solar Dynamics Observatory are presented and compared to theoretical models. The relevance of these results to the performance of the AIA instrument is discussed.
C1 [Soufli, Regina; Spiller, Eberhard; Robinson, Jeff C.; Fernandez-Perea, Monica; Baker, Sherry L.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Soufli, R (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM regina.soufli@llnl.gov
RI Dollar, Franklin/C-9214-2013;
OI Dollar, Franklin/0000-0003-3346-5763; Larruquert,
Juan/0000-0001-6356-9702
NR 28
TC 3
Z9 3
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9144-2
J9 PROC SPIE
PY 2012
VL 8443
AR 84433C
DI 10.1117/12.927274
PG 12
WC Engineering, Aerospace; Instruments & Instrumentation; Optics
SC Engineering; Instruments & Instrumentation; Optics
GA BDA92
UT WOS:000312391600095
ER
PT S
AU Vogel, JK
Pivovaroff, MJ
Nagarkar, VV
Kudrolli, H
Madsen, KK
Koglin, JE
Hailey, CJ
Craig, WW
Christensen, FE
Brejnholt, NF
AF Vogel, Julia K.
Pivovaroff, Michael J.
Nagarkar, Vivek V.
Kudrolli, Haris
Madsen, Kristin Kruse
Koglin, Jason E.
Hailey, Charles J.
Craig, William W.
Christensen, Finn E.
Brejnholt, Nicolai F.
BE Takahashi, T
Murray, SS
DenHerder, JWA
TI Application of an EMCCD Camera for Calibration of Hard X-Ray Telescopes
SO SPACE TELESCOPES AND INSTRUMENTATION 2012: ULTRAVIOLET TO GAMMA RAY
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Space Telescopes and Instrumentation 2012 - Ultraviolet to
Gamma Ray
CY JUL 01-06, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE EMCCD; NuSTAR; hard x-ray mission; x-ray detectors; calibration;
scintillator
AB Recent technological innovations make it feasible to construct efficient hard x-ray telescopes for space-based astronomical missions. Focusing optics are capable of improving the sensitivity in the energy range above 10 keV by orders of magnitude compared to previously used instruments. The last decade has seen focusing optics developed for balloon experiments and they are implemented in approved space missions such as the Nuclear Spectroscopic Telescope Array (NuSTAR). The full characterization of x-ray optics for astrophysical missions, including measurement of the point spread function (PSF) as well as scattering and reflectivity properties of substrate coatings, requires a large area detector with very high spatial resolution and sensitivity, photon counting and energy discriminating capability. Novel back-thinned Electron Multiplying Charge-Coupled Devices (EMCCDs) are suitable detectors for ground-based calibrations if combined with a scintillating material. This optical coupling of the EMCCD chip to a microcolumnar CsI(Tl) scintillator can be achieved via a fiberoptic taper. Not only does this detector system exhibit low noise and high spatial resolution inherent to CCDs, but the EMCCD is also able to handle high frame rates. Additionally, thick CsI(Tl) yields high detection efficiency for x-rays. In this paper, we discuss the advantages of using an EMCCD to calibrate hard x-ray optics. We will illustrate the promising features of this detector solution using examples of data obtained during the ground calibration of the NuSTAR telescopes performed at Columbia University during 2010/2011. Finally, we give an outlook on latest development and optimizations.
C1 [Vogel, Julia K.; Pivovaroff, Michael J.; Craig, William W.] Lawrence Livermore Natl Lab, Phys & Life Sci Dept, Livermore, CA USA.
RP Vogel, JK (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Dept, Livermore, CA USA.
EM vogel9@llnl.gov
RI Pivovaroff, Michael/M-7998-2014;
OI Pivovaroff, Michael/0000-0001-6780-6816; Madsen,
Kristin/0000-0003-1252-4891
NR 16
TC 1
Z9 1
U1 1
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9144-2
J9 PROC SPIE
PY 2012
VL 8443
AR 84432L
DI 10.1117/12.926386
PG 11
WC Engineering, Aerospace; Instruments & Instrumentation; Optics
SC Engineering; Instruments & Instrumentation; Optics
GA BDA92
UT WOS:000312391600071
ER
PT S
AU Carlton, D
Lambson, B
Gu, Z
Dhuey, S
Gao, L
Hughes, B
Olynick, D
Rettner, C
Scholl, A
Youngblood, B
Young, A
Krivorotov, I
Parkin, S
Bokor, J
AF Carlton, David
Lambson, Brian
Gu, Zheng
Dhuey, Scott
Gao, Li
Hughes, Brian
Olynick, Deirdre
Rettner, Charles
Scholl, Andreas
Youngblood, Brian
Young, Anthony
Krivorotov, Ilya
Parkin, Stuart
Bokor, Jeffrey
BE Drouhin, HJ
Wegrowe, JE
Razeghi, M
TI Signal Propagation in Dipole Coupled Nanomagnets for Logic Applications
SO SPINTRONICS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Spintronics V
CY AUG 12-16, 2012
CL San Diego, CA
SP SPIE
DE Nanomagnetic Logic; Post CMOS; Logic; Nanomagnetism
AB As conventional Silicon-based transistors reach their scaling limits, novel devices for performing computations have emerged as alternatives to continue the improvements in information technology that have benefited society over the past 40 years. One candidate that has shown great promise recently is a device that performs logical computations using dipole coupled nanomagnets. In this paper, we discuss recent advances that have led to a greater understanding of signal propagation in nanomagnet arrays. In particular, we highlight recent experimental work towards the imaging of a propagating magnetic cascade.
C1 [Carlton, David; Dhuey, Scott; Olynick, Deirdre; Scholl, Andreas; Young, Anthony] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Lambson, Brian; Gu, Zheng; Bokor, Jeffrey] Univ Calif Berkeley, Dept EECS, Berkeley, CA 94720 USA.
[Gao, Li; Hughes, Brian; Rettner, Charles; Parkin, Stuart] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA.
[Youngblood, Brian; Krivorotov, Ilya] Univ Calif Irvine, Dept Phys, Irvine, CA 92697 USA.
RP Carlton, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM dbcarlton@lbl.gov
RI Bokor, Jeffrey/A-2683-2011
FU DARPA; Western Institute of Nanoelectronics ( WIN); Center for Energy
Efficient Electronics Sciences [ECCS-0939514]; Office of Science, Office
of Basic Energy Sciences; Division of Materials Sciences and Engineering
of the US Department of Energy [DE-AC02-05CH11231]
FX This work was supported in part by the DARPA Non- Volatile Logic
Program, the Western Institute of Nanoelectronics ( WIN) and the Center
for Energy Efficient Electronics Sciences ( NSF Award Number
ECCS-0939514). Work at the Molecular Foundry and the Advanced Light
Source, Lawrence Berkeley National Laboratory was supported by the
Director, Office of Science, Office of Basic Energy Sciences, Division
of Materials Sciences and Engineering of the US Department of Energy
under Contract No. DE-AC02-05CH11231.
NR 12
TC 0
Z9 0
U1 0
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9178-7
J9 PROC SPIE
PY 2012
VL 8461
AR 84610W
DI 10.1117/12.930776
PG 8
WC Optics; Physics, Condensed Matter
SC Optics; Physics
GA BDF65
UT WOS:000313037400016
ER
PT J
AU Auld, J
Sokolov, V
Fontes, A
Bautista, R
AF Auld, Joshua
Sokolov, Vadim
Fontes, Angela
Bautista, Rene
TI Internet-based stated response survey for no-notice emergency
evacuations
SO TRANSPORTATION LETTERS-THE INTERNATIONAL JOURNAL OF TRANSPORTATION
RESEARCH
LA English
DT Article
DE emergency evacuation; survey; stated-response; evacuation behavior;
no-notice evacuations
ID MODEL
AB Large-scale evacuations from major cities during no-notice events - such as chemical or radiological attacks, hazardous material spills, or earthquakes - have an obvious impact on large regions rather than on just the directly affected area. The scope of the impact includes the accommodation of emergency evacuation traffic throughout a very large area and the planning of resources to respond appropriately to the needs of the affected population. Compared to events with advance notice, such as evacuations based on hurricanes approaching an affected area, the response to no-notice events relies exclusively on pre-planning and general regional emergency preparedness. In this paper we present the design, methodology and results of a survey which was conducted in order to obtain empirical data on individuals' responses to no-notice evacuation which can be used to calibrate an evacuee behavior model for planning purposes. The results of the survey show that people are more likely to evacuate if they see others evacuating and whether the evacuation ordered or recommended making little difference. When the event risk is moderate evacuees are more likely to evacuate to a shelter than when the risk is high, in this case people are more likely to evacuate to friends or family house and hotels. The area covered in the sample mostly includes the Chicago Metropolitan Area. However, we argue that the regional differences in the response to a no-notice evacuation are likely to be negligible, in contrast to advanced-notice evacuations where conditioning may occur. Thus, the results of the survey could be applicable nation-wide..
C1 [Auld, Joshua; Sokolov, Vadim] Argonne Natl Lab, TRACC, Argonne, IL 60439 USA.
[Fontes, Angela; Bautista, Rene] Univ Chicago, Stat & Methodol Dept NORC, Chicago, IL 60603 USA.
RP Auld, J (reprint author), Argonne Natl Lab, TRACC, 9700 S Cass Ave,Bldg 222, Argonne, IL 60439 USA.
EM jauld@anl.gov; vsokolov@anl.gov; fontes-angela@norc.org;
bautista-rene@norc.org
FU Regional Catastrophic Preparedness Grant Program; City of Chicago Office
of Emergency Management and Communications [21787]
FX Funding for this project provided by the Regional Catastrophic
Preparedness Grant Program and the City of Chicago Office of Emergency
Management and Communications, Grant #21787: Regional Transportation
Simulation Tool for Evacuation Planning.
NR 16
TC 0
Z9 0
U1 1
U2 10
PU J ROSS PUBL
PI FORT LAUDERDALE
PA 5765 N ANDREWS WAY, FORT LAUDERDALE, FL 33309 USA
SN 1942-7867
J9 TRANSP LETT
JI Transp. Lett.
PD JAN
PY 2012
VL 4
IS 1
BP 41
EP 53
DI 10.3328/TL.2012.04.01.41-53
PG 13
WC Transportation; Transportation Science & Technology
SC Transportation
GA 061TN
UT WOS:000312871300004
ER
PT S
AU Ccedil;iraci, S
Sozer, H
Tekinerdogan, B
AF Ciraci, Selim
Sozer, Hasan
Tekinerdogan, Bedir
BE Bai, X
Belli, F
Bertino, E
Chang, CK
Elci, A
Seceleanu, C
Xie, H
Zulkernine, M
TI An Approach for Detecting Inconsistencies between Behavioral Models of
the Software Architecture and the Code
SO 2012 IEEE 36TH ANNUAL COMPUTER SOFTWARE AND APPLICATIONS CONFERENCE
(COMPSAC)
SE Proceedings International Computer Software and Applications Conference
LA English
DT Proceedings Paper
CT 36th Annual IEEE International Computer Software and Applications
Conference (COMPSAC)
CY JUL 16-20, 2012
CL Izmir Inst Technol (IZTECH), Izmir, TURKEY
SP IEEE, IEEE Comp Soc, Iowa State Univ Sci & Technol
HO Izmir Inst Technol (IZTECH)
DE Software architectures; Runtime verification; Inconsistency detection
ID DESIGN; IMPLEMENTATION; SYSTEMS
AB In practice, inconsistencies between architectural documentation and the code might arise due to improper implementation of the architecture or the separate, uncontrolled evolution of the code. Several approaches have been proposed to detect inconsistencies between the architecture and the code but these tend to be limited for capturing inconsistencies that might occur at runtime. We present a runtime verification approach for detecting inconsistencies between the dynamic behavior of the documented architecture and the actual runtime behavior of the system. The approach is supported by a set of tools that implement the architecture and the code patterns in Prolog, and automatically generate runtime monitors for detecting inconsistencies. We illustrate the approach and the toolset for a Crisis Management System case study.
C1 [Ciraci, Selim] Pacific NW Natl Lab, Richland, WA 99352 USA.
[Sozer, Hasan] Ozyegin Univ, Istanbul, Turkey.
[Tekinerdogan, Bedir] Bilkent Univ, Ankara, Turkey.
RP Ccedil;iraci, S (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM selim.ciraci@pnnl.gov; hasan.sozer@ozyegin.edu.tr;
bedir@cs.bilkent.edu.tr
NR 23
TC 2
Z9 2
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 0730-3157
BN 978-0-7695-4736-7
J9 P INT COMP SOFTW APP
PY 2012
BP 257
EP 266
DI 10.1109/COMPSAC.2012.36
PG 10
WC Computer Science, Software Engineering; Computer Science, Theory &
Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BDA81
UT WOS:000312376000038
ER
PT S
AU Weisgraber, TH
Alder, BJ
AF Weisgraber, Todd H.
Alder, Berni J.
BE Mareschal, M
Santos, A
TI Computer Experiments on the Onset of Turbulence
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitiv, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE channel flow; turbulence; flow stability
ID ROUGH CHANNEL; FLOW; HYDRODYNAMICS; INSTABILITY; MODELS
AB We are investigating if small amplitude distributed wall roughness, combined with fluctuations, could nucleate the onset of turbulence in bounded flows. Our direct numerical simulations of turbulent transition isolate the effects of the roughness since the only direct flow perturbations we consider are those due to natural hydrodynamic fluctuations. To properly resolve the range of length scales, we developed a conservative mesh refinement approach for the lattice-Boltzmann method.
C1 [Weisgraber, Todd H.; Alder, Berni J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Weisgraber, TH (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
NR 13
TC 0
Z9 0
U1 0
U2 5
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 30
EP 33
DI 10.1063/1.4769465
PG 4
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200003
ER
PT S
AU Venkattraman, A
Alexeenko, AA
Gallis, MA
Ivanov, MS
AF Venkattraman, A.
Alexeenko, A. A.
Gallis, M. A.
Ivanov, M. S.
BE Mareschal, M
Santos, A
TI A Comparative Study of No-Time-Counter and Majorant Collision Frequency
Numerical Schemes in DSMC
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitividad, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE non-equilibrium flows; direct simulation Monte Carlo; majorant collision
frequency; Bobylev solution
ID SHOCK-WAVE; FLOW
AB The direct simulation Monte Carlo (DSMC) method is a stochastic approach to solve the Boltzmann equation and is built on various numerical schemes for transport, collision and sampling. This work aims to compare and contrast two popular O(N) DSMC collision schemes - no-time-counter (NTC) and majorant collision frequency (MCF) - with the goal of identifying the fundamental differences. MCF and NTC schemes are used in DSMC simulations of a spatially homogeneous equilibrium gas to study convergence with respect to various collision parameters. While the MCF scheme forces the reproduction of the exponential distribution of time between collisions, the NTC scheme requires larger number of simulators per cell to reproduce this Poisson process. The two collision schemes are also applied to the spatially homogeneous relaxation from an isotropic non-Maxwellian given by the Bobylev exact solution to the Boltzmann equation. While the two schemes produce identical results at large times, the initial relaxation shows some differences during the first few timesteps.
C1 [Venkattraman, A.; Alexeenko, A. A.; Ivanov, M. S.] Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA.
[Gallis, M. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
[Ivanov, M. S.] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Novosibirsk 630090, Russia.
RP Venkattraman, A (reprint author), Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA.
RI Alexeenko, Alina/B-7168-2011
FU NNSA Center for Prediction of Reliability; Integrity and Survivability
of Microsystems at Purdue University [DE- FC52- 08NA28617]; U. S.
Department of Energy's National Nuclear Security Administration [DE-
AC04- 94AL85000]
FX This work has been supported by NNSA Center for Prediction of
Reliability, Integrity and Survivability of Microsystems at Purdue
University under contract number DE- FC52- 08NA28617. A part of this
work was performed at Sandia National Laboratories. Sandia National
Laboratories is a multi- program laboratorymanaged and operated by
Sandia Corporation, a wholly owned subsidiary of Lockheed Martin
Corporation, for the U. S. Department of Energy's National Nuclear
Security Administration under contract DE- AC04- 94AL85000.
NR 13
TC 1
Z9 1
U1 0
U2 3
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 489
EP 495
DI 10.1063/1.4769577
PG 7
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200063
ER
PT S
AU Moore, CH
Hopkins, MM
Crozier, PS
Boerner, JJ
Musson, LC
Hooper, RW
Bettencourt, MT
AF Moore, Chris H.
Hopkins, Matthew M.
Crozier, Paul S.
Boerner, Jeremiah J.
Musson, Lawrence C.
Hooper, Russell W.
Bettencourt, Matthew T.
BE Mareschal, M
Santos, A
TI 1D PIC-DSMC Simulations of Breakdown in Microscale Gaps
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitiv, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE Particle-In-Cell; Direct Simulation Monte Carlo; Multi-Scale; Breakdown;
Microdischarge
ID CROSS-SECTIONS; DISSOCIATIVE RECOMBINATION; ELECTRON-EMISSION;
ATMOSPHERIC AIR; IONIZATION; EXCITATION; DISCHARGES; IMPACT; GASES;
ARGON
AB An explicit electrostatic particle-in-cell (PIC) code with complex boundary conditions and direct simulation Monte Carlo (DSMC) particle collisions is utilized to investigate one dimensional direct current breakdown between two electrodes separated by air at STP. The simulation model includes Auger neutralization and cold field electron emission from the cathode as well as electron-neutral elastic, ionization, and excitation interactions. The simulated breakdown voltages at various electrode gap sizes are compared to experimental data and the Paschen curve. It is found that cold field electron emission can explain the breakdown voltage deviation from the Paschen curve measured for small gaps. Breakdown in large gaps proceeds over multiple ion transit timescales as electrons created via Auger neutralization of ions at the cathode quickly stream across the gap, creating new ions which accelerate towards the cathode and release another "pulse" of electrons. If the resultant pulse of electrons is larger than the initial pulse, then this process can build up a significant quasi-neutral plasma in the gap and the voltage drop across the gap will occur primarily across the (thin) sheath. Breakdown is accelerated if the electric field at the cathode surface is large enough for significant cold field emission flux, which increases the plasma density and decreases the Debye length and thus the sheath size, further increasing the electric field and cold field emission flux from the cathode surface. Breakdown in air pressure gaps was found to be sensitive to the differential scattering cross section for electron-neutral interactions. Isotropic scattering of elastic collisions results in lower breakdown voltages at moderate gaps (several mean free paths) and higher breakdown voltages for large gap sizes compared to when more accurate forward-biased scattering distributions are used. The dependence of breakdown voltage on the scattering distribution is due to a competition between increased backscattering resulting in a larger effective path length across the gap versus changes in the electron energy distribution function.
C1 [Moore, Chris H.; Hopkins, Matthew M.; Crozier, Paul S.; Boerner, Jeremiah J.; Musson, Lawrence C.; Hooper, Russell W.; Bettencourt, Matthew T.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Moore, CH (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
RI bettencourt, matthew/I-5924-2014
NR 23
TC 1
Z9 1
U1 0
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 629
EP 636
DI 10.1063/1.4769601
PG 8
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200082
ER
PT S
AU Balakrishnan, K
Bell, JB
Donev, A
Garcia, AL
AF Balakrishnan, Kaushik
Bell, John B.
Donev, Aleksandar
Garcia, Alejandro L.
BE Mareschal, M
Santos, A
TI Fluctuating Hydrodynamics and Direct Simulation Monte Carlo
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitividad, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE Thermal fluctuations; DSMC; Turing instability; Reaction-diffusion
systems
ID STOCHASTIC SIMULATION; ALGORITHM REFINEMENT; DILUTE GAS; EQUATION;
SYSTEM; MODEL
AB Thermodynamic fluctuations are significant at microscopic scales even when hydrodynamic transport models (i.e., Navier-Stokes equations) are still accurate; a well-known example is Rayleigh scattering, which makes the sky blue. Interesting phenomena also appear in non-equilibrium systems, such as the enhancement of diffusion during mixing due to the correlation of velocity and concentration fluctuations. Direct Simulation Monte Carlo (DSMC) simulations are useful in the study of hydrodynamic fluctuations due to their computational efficiency and ability to model molecular detail, such as internal energy and chemical reactions. More recently, finite volume schemes based on the fluctuating hydrodynamic equations of Landau and Lifshitz have been formulated and validated by comparisons with DSMC simulations. This paper discusses some of the relevant numerical issues and physical effects investigated using DSMC and stochastic Navier-Stokes simulations. This paper also presents the multi-component fluctuating hydrodynamic equations, including chemical reactions, and illustrates their numerical solutions in the study of Turing patterns. We find that behind a propagating reaction front, labyrinth patterns are produced due to the coupling of reactions and species diffusion. In general, fluctuations accelerate the propagation speed of the leading front but differences are observed in the Turing patterns depending on the origin of the fluctuations (stochastic hydrodynamic fluxes versus Langevin chemistry).
C1 [Balakrishnan, Kaushik; Bell, John B.] Lawrence Berkeley Nat Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA.
[Donev, Aleksandar] New York Univ, Courant Inst Math Sci, New York, NY 10012 USA.
[Garcia, Alejandro L.] San Jose State Univ, Dept Phys & Astron, San Jose, CA 95192 USA.
RP Balakrishnan, K (reprint author), Lawrence Berkeley Nat Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA.
NR 45
TC 2
Z9 2
U1 0
U2 11
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 695
EP 704
DI 10.1063/1.4769610
PG 10
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200091
ER
PT S
AU Gallis, MA
Torczynski, JR
AF Gallis, Michael A.
Torczynski, John R.
BE Mareschal, M
Santos, A
TI The Effect of Internal Energy on Chemical Reaction Rates as Predicted by
Bird's Quantum-Kinetic Model
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitiv, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE DSMC; Non-equilibrium; Quantum-Kinetic; Internal Energy; Chemical
Reactions
ID DSMC
AB The effect of non-equilibrium internal energy excitation on the reaction rates predicted by Bird's Quantum-Kinetic (Q-K) model for dissociation and exchange reactions is analyzed. The effect of vibrational non-equilibrium is treated explicitly by the Q-K model. The effect of rotational non-equilibrium is introduced as a perturbation to the effect of vibrational non-equilibrium in chemical reactions. For dissociation reactions, a small but measurable improvement in the rates is observed. For exchange reactions, the change is negligible. These findings are in agreement with experimental observations and theoretical predictions. The results from one-dimensional stagnation-streamline and two-dimensional axi-symmetric DSMC code implementations of the original and modified Q-K models are compared for a typical re-entry flow. The influence of rotational non-equilibrium in promoting chemical reactions is seen to be small for this type of flow.
C1 [Gallis, Michael A.; Torczynski, John R.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA.
RP Gallis, MA (reprint author), Sandia Natl Labs, Engn Sci Ctr, POB 5800, Albuquerque, NM 87185 USA.
NR 17
TC 0
Z9 0
U1 1
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 1051
EP 1060
DI 10.1063/1.4769658
PG 10
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200139
ER
PT S
AU Soorkia, S
Leone, SR
Wilson, KR
AF Soorkia, Satchin
Leone, Stephen R.
Wilson, Kevin R.
BE Mareschal, M
Santos, A
TI Radical-Neutral Chemical Reactions Studied at Low Temperature with VUV
Synchrotron Photoionization Mass Spectrometry
SO 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012, VOLS. 1 AND
2
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 28th International Symposium on Rarefied Gas Dynamics (RGD)
CY JUL 09-13, 2012
CL Zaragoza, SPAIN
SP Minist Econ & Competitividad, Govt Aragon, Dept Ind & Innovat, Aragoneese Agcy Res & Dev (ARAID), Univ Zaragoza, Zaragoza Sci Ctr Adv Modeling (ZCAM), Inst Biocomputat & Study Complex Syst (BiFi), Parallel Interface Direct Simulat Monte Carlo (PIDSMC) Software Inc
DE Low-temperature kinetics; product branching ratios; radical-neutral
chemical reactions; Titan; planetary atmospheres; pulsed Laval nozzles;
ethynyl radical
ID PULSED LAVAL NOZZLE; RATE COEFFICIENTS; ALLENE CH2=C=CH2;
UNSATURATED-HYDROCARBONS; KINETICS; C2H; EXPANSIONS; BENZENE; TITAN; CN
AB A pulsed Laval nozzle apparatus employing tunable VUV synchrotron photoionization and quadrupole mass spectrometry for the study of radical-neutral chemical reactions of importance for modeling the atmosphere of Titan and the outer planets is described. The apparatus enables the study of low-temperature kinetics and isomer-resolved product branching of highly reactive radicals with unsaturated hydrocarbons reactions. The low-temperature branching ratio for the reaction of the ethynyl radical (C2H) with allene (C3H4) has been measured for the first time at 79 K. This reaction is found to yield 1,4-pentadiyne as the major reaction product (50 +/- 10%), followed by ethynylallene (28 +/- 10%) and methyldiacetylene (22 +/- 10%) via H-atom elimination from the initially formed C5H5 adduct. The derived branching ratios can be directly used to predict the chemical evolution of Titan's atmosphere.
C1 [Soorkia, Satchin] Univ Paris 11, Inst Sci Mol Orsay, CNRS 8214, Orsay, France.
[Leone, Stephen R.] Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA.
[Leone, Stephen R.; Wilson, Kevin R.] Lawrence Berkeley Natl Lab, Chem Sci Div, Berkeley, CA 94720 USA.
RP Soorkia, S (reprint author), Univ Paris 11, Inst Sci Mol Orsay, CNRS 8214, Orsay, France.
FU National Aeronautics and Space Administration [NNX09AB60G]; Office of
Science; Office of Basic Energy Sciences of the U. S. Department of
Energy at Lawrence Berkeley National Laboratory [DE- AC02- 05CH11231]
FX The support of personnel ( S. S.) for this research by the National
Aeronautics and Space Administration ( Grant No. NNX09AB60G) is
gratefully acknowledged. The Advanced Light Source and Chemical Sciences
Division ( S. R. L. and K. R. W.) are supported by the Director, Office
of Science, Office of Basic Energy Sciences of the U. S. Department of
Energy under Contract No. DE- AC02- 05CH11231 at Lawrence Berkeley
National Laboratory.
NR 28
TC 0
Z9 0
U1 1
U2 10
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1115-9
J9 AIP CONF PROC
PY 2012
VL 1501
BP 1365
EP 1372
DI 10.1063/1.4769699
PG 8
WC Engineering, Aerospace; Astronomy & Astrophysics
SC Engineering; Astronomy & Astrophysics
GA BDB01
UT WOS:000312411200180
ER
PT J
AU Pun, A
Hanifi, DA
Kiel, G
O'Brien, E
Liu, Y
AF Pun, Andrew
Hanifi, David A.
Kiel, Gavin
O'Brien, Evan
Liu, Yi
TI Facile Route to an All-Organic, Triply Threaded, Interlocked Structure
by Templated Dynamic Clipping
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE host-guest systems; rotaxanes; self-assembly; supramolecular chemistry;
template synthesis
ID ARTIFICIAL MOLECULAR MUSCLES; DIRECTED SYNTHESIS; COORDINATION CAGES;
COVALENT CHEMISTRY; BISTABLE ROTAXANES; BORROMEAN RINGS; CROWN-ETHER;
ONE-POT; POLYROTAXANES; CATENANES
C1 [Pun, Andrew; Hanifi, David A.; Kiel, Gavin; O'Brien, Evan; Liu, Yi] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA USA.
[Pun, Andrew; Kiel, Gavin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA.
RP Liu, Y (reprint author), Lawrence Berkeley Natl Lab, Mol Foundry, 1 Cyclotron Rd,MS 67R6110, Berkeley, CA USA.
EM yliu@lbl.gov
RI Liu, yi/A-3384-2008; Foundry, Molecular/G-9968-2014
OI Liu, yi/0000-0002-3954-6102;
FU Office of Science, Office of Basic Energy Sciences, Scientific User
Facilities Division, of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX This work was performed at the Molecular Foundry, Lawrence Berkeley
National Laboratory, supported by the Office of Science, Office of Basic
Energy Sciences, Scientific User Facilities Division, of the U.S.
Department of Energy under Contract No. DE-AC02-05CH11231.
NR 93
TC 18
Z9 18
U1 2
U2 51
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 52
BP 13119
EP 13122
DI 10.1002/anie.201207048
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 057HD
UT WOS:000312552900042
PM 23161742
ER
PT J
AU Niehof, JT
Morley, SK
Friedel, RHW
AF Niehof, J. T.
Morley, S. K.
Friedel, R. H. W.
TI Association of cusp energetic ions with geomagnetic storms and substorms
SO ANNALES GEOPHYSICAE
LA English
DT Article
DE Magnetospheric physics; Energetic particles, trapped; Magnetopause,
cusp, and boundary layers; Storms and substorms
ID MAGNETIC DIPOLARIZATION; ACCELERATION REGION; EXTERIOR CUSP; BOW SHOCK;
MAGNETOSPHERE; CLUSTER; EVENTS; FIELD; INSTRUMENT; PARTICLES
AB Energetic ions observed in the cusp have been explained as a result of processes within the magnetosphere, but also proposed as a driver of some of those same processes. This study assesses potential connections between energetic ions observed in the cusp and geomagnetic storm and substorm activity. These connections may suggest sources of cusp energetic particles (CEPs), or imply effects of these particles on magnetospheric dynamics. We identify CEPs from six years of cusp crossings by the Polar satellite, relating them to storm and substorm onsets. CEPs showed no significant dependence on storms but did show a weak, statistically significant, increase after substorm onsets. CEPs had no significant association with subsequent storm or substorm onsets. We conclude that substorm acceleration may contribute to CEPs but CEPs are unlikely to contribute to global magnetospheric dynamics.
C1 [Niehof, J. T.; Morley, S. K.; Friedel, R. H. W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Niehof, J. T.] Boston Univ, Ctr Space Phys, Boston, MA 02215 USA.
RP Niehof, JT (reprint author), Los Alamos Natl Lab, MS D466, Los Alamos, NM 87545 USA.
EM jniehof@lanl.gov
RI Morley, Steven/A-8321-2008; Friedel, Reiner/D-1410-2012
OI Morley, Steven/0000-0001-8520-0199; Friedel, Reiner/0000-0002-5228-0281
FU NASA [NNG05GD23G]
FX We are grateful to T. Fritz for useful conversations and providing data
from CAMMICE MICS. We thank the POLAR MFE and POLAR HYDRA teams for the
use of data from their instruments, the OMNI team for their assimilative
solar wind datasets, and J. Gannon for USGS Dst data. We also thank
contributors to the NumPy, SciPy, and matplotlib tools, and our SpacePy
co-authors at LANL. While at Boston University, JTN was supported by
NASA grant NNG05GD23G. We thank the reviewers for detailed, useful
comments and suggestions.
NR 49
TC 1
Z9 1
U1 1
U2 5
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 0992-7689
EI 1432-0576
J9 ANN GEOPHYS-GERMANY
JI Ann. Geophys.
PY 2012
VL 30
IS 12
BP 1633
EP 1643
DI 10.5194/angeo-30-1633-2012
PG 11
WC Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology &
Atmospheric Sciences
SC Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences
GA 058WV
UT WOS:000312666500002
ER
PT J
AU Li, L
Chen, CH
Huang, C
Huang, HY
Zhang, GF
Wang, YJ
Wang, HL
Lou, SR
Qiao, LP
Zhou, M
Chen, MH
Chen, YR
Streets, DG
Fu, JS
Jang, CJ
AF Li, L.
Chen, C. H.
Huang, C.
Huang, H. Y.
Zhang, G. F.
Wang, Y. J.
Wang, H. L.
Lou, S. R.
Qiao, L. P.
Zhou, M.
Chen, M. H.
Chen, Y. R.
Streets, D. G.
Fu, J. S.
Jang, C. J.
TI Process analysis of regional ozone formation over the Yangtze River
Delta, China using the Community Multi-scale Air Quality modeling system
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID PRIDE-PRD2004 CAMPAIGN; BOUNDARY-CONDITIONS; IBERIAN PENINSULA; SURFACE
OZONE; PART II; EMISSIONS; POLLUTION; PREDICTIONS; POLLUTANTS; EPISODE
AB A high O-3 episode was detected in urban Shanghai, a typical city in the Yangtze River Delta (YRD) region in August 2010. The CMAQ integrated process rate method is applied to account for the contribution of different atmospheric processes during the high pollution episode. The analysis shows that the maximum concentration of ozone occurs due to transport phenomena, including vertical diffusion and horizontal advective transport. Gas-phase chemistry producing O-3 mainly occurs at the height of 300-1500 m, causing a strong vertical O-3 transport from upper levels to the surface layer. The gas-phase chemistry is an important sink for O-3 in the surface layer, coupled with dry deposition. Cloud processes may contribute slightly to the increase of O-3 due to convective clouds or to the decrease of O-3 due to scavenging. The horizontal diffusion and heterogeneous chemistry contributions are negligible during the whole episode. Modeling results show that the O-3 pollution characteristics among the different cities in the YRD region have both similarities and differences. During the buildup period, the O-3 starts to appear in the city regions of the YRD and is then transported to the surrounding areas under the prevailing wind conditions. The O-3 production from photochemical reaction in Shanghai and the surrounding area is most significant, due to the high emission intensity in the large city; this ozone is then transported out to sea by the westerly wind flow, and later diffuses to rural areas like Chongming island, Wuxi and even to Nanjing. The O-3 concentrations start to decrease in the cities after sunset, due to titration of the NO emissions, but ozone can still be transported and maintain a significant concentration in rural areas and even regions outside the YRD region, where the NO emissions are very small.
C1 [Li, L.; Chen, C. H.; Huang, C.; Huang, H. Y.; Zhang, G. F.; Wang, H. L.; Lou, S. R.; Qiao, L. P.; Zhou, M.; Chen, M. H.; Chen, Y. R.] Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China.
[Wang, Y. J.] Shanghai Univ, Inst Environm Pollut & Hlth, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China.
[Streets, D. G.] Argonne Natl Lab, Decis & Informat Sci Div, Argonne, IL 60439 USA.
[Fu, J. S.] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN 37996 USA.
[Jang, C. J.] US EPA, Off Air Qual Planning & Stand, Res Triangle Pk, NC 27711 USA.
RP Chen, CH (reprint author), Shanghai Acad Environm Sci, Shanghai 200233, Peoples R China.
EM chench@saes.sh.cn
RI 杨, 宇栋/F-6250-2012; Huang, Cheng/I-7099-2015;
OI Streets, David/0000-0002-0223-1350
FU National Non-profit Scientific Research Program for Environmental
Protection [201009001, 201209001]; Science and Technology Commission of
Shanghai Municipality [11231200500]; National Natural Science Foundation
of China (NSFC) [41205122, 41105102]
FX This study was supported by the National Non-profit Scientific Research
Program for Environmental Protection via grant No. 201009001 and
201209001, the Science and Technology Commission of Shanghai
Municipality Fund Project via grant No. 11231200500, and the National
Natural Science Foundation of China (NSFC) via grant No. 41205122 and
No. 41105102. The authors appreciate the suggestions made by the
reviewers that helped greatly to improve this paper.
NR 39
TC 17
Z9 20
U1 9
U2 58
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 22
BP 10971
EP 10987
DI 10.5194/acp-12-10971-2012
PG 17
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 055JG
UT WOS:000312411300023
ER
PT J
AU Cahill, JF
Suski, K
Seinfeld, JH
Zaveri, RA
Prather, KA
AF Cahill, J. F.
Suski, K.
Seinfeld, J. H.
Zaveri, R. A.
Prather, K. A.
TI The mixing state of carbonaceous aerosol particles in northern and
southern California measured during CARES and CalNex 2010
SO ATMOSPHERIC CHEMISTRY AND PHYSICS
LA English
DT Article
ID FLIGHT MASS-SPECTROMETRY; LOS-ANGELES BASIN; BIOMASS BURNING PARTICLES;
SAN-JOAQUIN VALLEY; BLACK CARBON; ATMOSPHERIC AEROSOLS; SINGLE
PARTICLES; ORGANIC AEROSOL; LASER DESORPTION/IONIZATION; CONTROLLED
DIMENSIONS
AB Carbonaceous aerosols impact climate directly by scattering and absorbing radiation, and hence play a major, although highly uncertain, role in global radiative forcing. Commonly, ambient carbonaceous aerosols are internally mixed with secondary species such as nitrate, sulfate, and ammonium, which influences their optical properties, hygroscopicity, and atmospheric lifetime, thus impacting climate forcing. Aircraft-aerosol time-of-flight mass spectrometry (A-ATOFMS), which measures single-particle mixing state, was used to determine the fraction of organic and soot aerosols that are internally mixed and the variability of their mixing state in California during the Carbonaceous Aerosols and Radiative Effects Study (CARES) and the Research at the Nexus of Air Quality and Climate Change (CalNex) field campaigns in the late spring and early summer of 2010. Nearly 88% of all A-ATOFMS measured particles (100-1000 nm in diameter) were internally mixed with secondary species, with 96% and 75% of particles internally mixed with nitrate and/or sulfate in southern and northern California, respectively. Even though atmospheric particle composition in both regions was primarily influenced by urban sources, the mixing state was found to vary greatly, with nitrate and soot being the dominant species in southern California, and sulfate and organic carbon in northern California. Furthermore, mixing state varied temporally in northern California, with soot becoming the prevalent particle type towards the end of the study as regional pollution levels increased. The results from these studies demonstrate that the majority of ambient carbonaceous particles in California are internally mixed and are heavily influenced by secondary species that are most prevalent in the particular region. Based on these findings, considerations of regionally dominant sources and secondary species, as well as temporal variations of aerosol physical and optical properties, will be required to obtain more accurate predictions of the climate impacts of aerosol in California.
C1 [Cahill, J. F.; Suski, K.; Prather, K. A.] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
[Seinfeld, J. H.] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA.
[Zaveri, R. A.] Pacific NW Natl Lab, Atmpspher Sci & Global Div, Richland, WA 99352 USA.
[Prather, K. A.] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA.
RP Prather, KA (reprint author), Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA.
EM kprather@ucsd.edu
RI Prather, Kimberly/A-3892-2008;
OI Prather, Kimberly/0000-0003-3048-9890; Zaveri,
Rahul/0000-0001-9874-8807; Cahill, John/0000-0002-9866-4010
FU University of California San Diego-Pacific Northwest National Laboratory
Aerosol Chemistry and Climate Institute; California Air Resources Board
[09-333]; NOAA [NA090AR4310128]; US Department of Energy (DOE), Office
of Biological and Environmental Research (OBER); US DOE at PNNL
[DE-AC06-76RLO 1830]; Atmospheric Radiation Measurement (ARM) Program
FX We would like to acknowledge the University of California San
Diego-Pacific Northwest National Laboratory Aerosol Chemistry and
Climate Institute and the California Air Resources Board Agreement
#09-333 for providing the funding for this work. Stephen R. Springston
provided in flight gas phase concentrations during the CARES campaign.
The authors are also grateful to the flight crews during the CARES and
CalNex studies, most notably John Hubbe, Jason Tomlinson, Scott Hersey,
Andrew Metcalf, and Haflidi Jonsson, as well as Jessie Creamean and
Melanie Zauscher of the Prather Group for their help with this project.
The Twin Otter portion of this work was supported by NOAA grant
NA090AR4310128. Funding for data collection on-board the G-1 aircraft
was provided by the Atmospheric Radiation Measurement (ARM) Program
sponsored by the US Department of Energy (DOE), Office of Biological and
Environmental Research (OBER). This research was also supported by the
US DOE's Atmospheric System Research (ASR) Program under Contract
DE-AC06-76RLO 1830 at PNNL.
NR 85
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U1 6
U2 78
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1680-7316
EI 1680-7324
J9 ATMOS CHEM PHYS
JI Atmos. Chem. Phys.
PY 2012
VL 12
IS 22
BP 10989
EP 11002
DI 10.5194/acp-12-10989-2012
PG 14
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 055JG
UT WOS:000312411300024
ER
PT J
AU Pramanick, A
Prewitt, AD
Forrester, JS
Jones, JL
AF Pramanick, Abhijit
Prewitt, Anderson D.
Forrester, Jennifer S.
Jones, Jacob L.
TI Domains, Domain Walls and Defects in Perovskite Ferroelectric Oxides: A
Review of Present Understanding and Recent Contributions
SO CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
LA English
DT Review
DE domains; domain walls; ferroelectric; perovskite
ID ATOMIC-FORCE MICROSCOPY; TRANSMISSION ELECTRON-MICROSCOPY; MISFIT
RELAXATION MECHANISMS; BARIUM-TITANATE CERAMICS; BATIO3 SINGLE-CRYSTALS;
THIN-FILMS; POLYCRYSTALLINE FERROELECTRICS; X-RAY; PIEZOELECTRIC
NONLINEARITY; POLARIZATION REVERSAL
AB Ferroelectric oxides are used in many modern technologies including sensors, actuators, thin-film memories and energy harvesting. Ferroelectrics of similar composition often show wide variations in their characteristic properties. Such variations in properties can be largely attributed to differences in the structural arrangements of domains and distributions of defects within a multidomain/polycrystalline material. Recent developments in characterization techniques and first-principle calculations have significantly advanced our understanding of how ferroelectric domains interact with material defects, and thereby influence the properties of a material. This review provides a broad outlook of the contributions from different experimental and computational studies that have clarified the structure of domains, domain walls and defects in perovskite ferroelectric oxides, and the evolution of these structures under the application of electric fields. It is intended that an integrated viewpoint of these issues, as provided here, will further motivate synergistic activities between the various research groups and industries towards the development and characterization of ferroelectric oxides.
C1 [Pramanick, Abhijit] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
[Prewitt, Anderson D.; Forrester, Jennifer S.; Jones, Jacob L.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA.
RP Pramanick, A (reprint author), Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA.
EM pramanicka@ornl.gov
RI Pramanick, Abhijit/D-9578-2011; Jones, Jacob/A-8361-2008
OI Pramanick, Abhijit/0000-0003-0687-4967;
FU U.S. Department of the Army [W911NF-09-1-0435]; U.S. National Science
Foundation [DMR-0746902]; Laboratory Directed Research and Development
Fund of the Oak Ridge National Laboratory
FX JJ, ADP, and JSF acknowledge partial support for this work from the U.S.
Department of the Army under W911NF-09-1-0435 and the U.S. National
Science Foundation under award number DMR-0746902. AP acknowledges
support from a Laboratory Directed Research and Development Fund of the
Oak Ridge National Laboratory.
NR 191
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Z9 27
U1 29
U2 259
PU TAYLOR & FRANCIS INC
PI PHILADELPHIA
PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
SN 1040-8436
EI 1547-6561
J9 CRIT REV SOLID STATE
JI Crit. Rev. Solid State Mat. Sci.
PY 2012
VL 37
IS 4
BP 243
EP 275
DI 10.1080/10408436.2012.686891
PG 33
WC Materials Science, Multidisciplinary; Physics, Condensed Matter
SC Materials Science; Physics
GA 051KK
UT WOS:000312125100002
ER
PT S
AU Ziock, KP
Braverman, JB
Fabris, L
Harrison, MJ
AF Ziock, Klaus-Peter
Braverman, Josh. B.
Fabris, Lorenzo
Harrison, Mark J.
BE Kamerman, GW
Steinvall, O
Lewis, KL
Hollins, RC
Merlet, TJ
Gruneisen, MT
Dusek, M
Rarity, JG
Bishop, GJ
Gonglewski, J
TI The other end of the scale: Coded apertures in the near field for
high-resolution 3D gamma event localization in bulk scintillators
SO ELECTRO-OPTICAL REMOTE SENSING, PHOTONIC TECHNOLOGIES, AND APPLICATIONS
VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Electro-Optical Remote Sensing, Photonic Technologies, and
Applications VI
CY SEP 24-26, 2012
CL Edinburgh, SCOTLAND
SP SPIE, SELEX GALILEO, THALES
DE coded aperture; gamma-ray detector; position-sensitive gamma-ray
detector; scintillator
ID RAY IMAGER; CAMERAS
AB Coded apertures were originally developed by the high-energy astrophysical community for use in imaging high-energy photons (x- and y-rays) for which focusing optics are ineffective. We are now taking what was developed as a tool for use in the extreme far field at high energies to encode spatial information at optical wavelengths in the extreme near field to enhance the performance of position-sensitive x- and gamma-ray scintillator detectors. Spatial resolution for events within bulk scintillators is limited by the size of the light "spot" available at the sides of the scintillator, where phototransducers convert the light to an electrical signal The ability to localize an event is determined by how well one can determine the centroid and the size of the spot. Generally, performance is limited to many millimeters in all three spatial dimensions, and one cannot resolve simultaneous events that are closer together than the width of the light spot (frequently of order 10 mm) For this reason, many applications requiring the finest spatial resolution subdivide the scintillator into tiny elements and use a digital approach to determine event location. However, that technique significantly complicates the overall instrument and sacrifices energy resolution because the light collection efficiency varies with event location within the subdivided scintillator. We are building a device that overcomes these shortcomings by using an optical coded-aperture shadow mask between a bulk crystal and a position-sensitive phototransducer. Simulations indicate that we can achieve millimeter-scale localization in all three spatial dimensions while resolving simultaneous energy depositions. The technique and progress toward its realization will be presented.
C1 [Ziock, Klaus-Peter; Fabris, Lorenzo; Harrison, Mark J.] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
[Ziock, Klaus-Peter; Braverman, Josh. B.] Univ Tenn, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Ziock, KP (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM ziockk@ornl.gov
RI Fabris, Lorenzo/E-4653-2013
OI Fabris, Lorenzo/0000-0001-5605-5615
FU U. S. Department of Energy; Office of Research and Engineering [NA- 22];
[DE- AC05- 00OR22725.]
FX This work was supported by the U. S. Department of Energy, Office of
Research and Engineering ( NA- 22). Oak Ridge National Laboratory is
managed for the U. S. Department of Energy under contract DE- AC05-
00OR22725.
NR 22
TC 0
Z9 0
U1 0
U2 10
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9283-8
J9 PROC SPIE
PY 2012
VL 8542
AR 854210
DI 10.1117/12.979787
PG 12
WC Engineering, Electrical & Electronic; Optics
SC Engineering; Optics
GA BDA59
UT WOS:000312346500030
ER
PT J
AU Polsky, R
Harper, JC
Brozik, SM
AF Polsky, Ronen
Harper, Jason C.
Brozik, Susan M.
BE Ozsoz, M
TI Nanomaterial-Based Electrochemical DNA Detection
SO ELECTROCHEMICAL DNA BIOSENSORS
LA English
DT Article; Book Chapter
ID WALLED CARBON NANOTUBES; FIELD-EFFECT TRANSISTORS; SINGLE-NUCLEOTIDE
POLYMORPHISMS; ULTRASENSITIVE ELECTRICAL DETECTION; SEQUENCE-SPECIFIC
DETECTION; LAYER COVALENT ATTACHMENT; LABEL-FREE DETECTION; GOLD
NANOPARTICLES; MODIFIED ELECTRODE; HYBRIDIZATION DETECTION
C1 [Polsky, Ronen; Harper, Jason C.; Brozik, Susan M.] Sandia Natl Labs, Biosensors & Nanomat, Albuquerque, NM 87185 USA.
RP Polsky, R (reprint author), Sandia Natl Labs, Biosensors & Nanomat, POB 5800,MS-0892, Albuquerque, NM 87185 USA.
EM rpolsky@sandia.gov
NR 144
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U1 0
U2 0
PU PAN STANFORD PUBLISHING PTE LTD
PI SINGAPORE
PA PENTHOUSE LEVEL, SUNTEC TOWER 3, 8 TEMASEK BLVD, SINGAPORE, 038988,
SINGAPORE
BN 978-981-4303-98-9
PY 2012
BP 427
EP 479
D2 10.1201/b11988
PG 53
WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Chemistry, Analytical
SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology;
Chemistry
GA BDC82
UT WOS:000312697700015
ER
PT J
AU Gangloff, RP
Somerday, BP
AF Gangloff, Richard P.
Somerday, Brian P.
BE Gangloff, RP
Somerday, BP
TI Gaseous hydrogen embrittlement of materials in energy technologies
Volume 2: Mechanisms, modelling and future developments Introduction
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
2: MECHANISMS, MODELLING AND FUTURE DEVELOPMENTS
SE Woodhead Publishing in Materials
LA English
DT Editorial Material; Book Chapter
C1 [Gangloff, Richard P.] Univ Virginia, Sch Engn & Appl Sci, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA.
[Somerday, Brian P.] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Gangloff, RP (reprint author), Univ Virginia, Sch Engn & Appl Sci, Dept Mat Sci & Engn, 395 McCormick Rd,POB 400745, Charlottesville, VA 22904 USA.
EM rpg7y@Virginia.edu; bpsomer@sandia.gov
NR 0
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U1 1
U2 2
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-537-4
J9 WOODHEAD PUBL MATER
PY 2012
BP XV
EP XIX
PG 5
WC Energy & Fuels; Metallurgy & Metallurgical Engineering
SC Energy & Fuels; Metallurgy & Metallurgical Engineering
GA BCW20
UT WOS:000311641600001
ER
PT B
AU Dadfarnia, M
Sofronis, P
Somerday, BP
Balch, DK
Schembri, P
AF Dadfarnia, M.
Sofronis, P.
Somerday, B. P.
Balch, D. K.
Schembri, P.
BE Gangloff, RP
Somerday, BP
TI Degradation models for hydrogen embrittlement
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
2: MECHANISMS, MODELLING AND FUTURE DEVELOPMENTS
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE hydrogen embrittlement; subcritical cracking; intergranular cracking;
ductile fracture; grain boundary decohesion; void growth
ID GRAIN-BOUNDARY DIFFUSION; NICKEL-BASE ALLOYS; HIGH-PURITY NICKEL;
CRACK-GROWTH; VOID GROWTH; BRITTLE-FRACTURE; CONTINUUM MODEL;
PLASTIC-FLOW; METALS; DECOHESION
AB In this chapter, we present a solid mechanics modeling and simulation effort to elucidate the linking of the macroscopic embrittlement phenomenology to the features of the microstructural degradation mechanisms ahead of a crack tip in the austenitic Fe-Ni-Co alloy IN903. In general, we find that the deformation and hydrogen fields in the fracture process depend strongly on the initial and boundary conditions, thus reflecting the variety of fracture modes. In particular, for intergranular crack growth in wedge opening load specimens in hydrogen gas we predict fracture process zones that are large in comparison to the typical characteristic diffusion distances. For ductile cracking in gaseous environments, we find that the process is controlled by the average spacing of the carbides.
C1 [Dadfarnia, M.; Sofronis, P.] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA.
[Somerday, B. P.; Balch, D. K.] Sandia Natl Labs, Livermore, CA 94550 USA.
[Schembri, P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Sofronis, P (reprint author), Univ Illinois, Dept Mech Sci & Engn, 158 Mech Engn Bldg,MC 244,1206 W Green St, Urbana, IL 61801 USA.
EM sofronis@illinois.edu; BPSomer@sandia.gov; schembri@lanl.gov
OI Dadfarnia, Mohsen/0000-0002-5218-971X
NR 61
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U1 0
U2 3
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-537-4; 978-0-85709-536-7
J9 WOODHEAD PUBL MATER
PY 2012
BP 326
EP 377
PG 52
WC Energy & Fuels; Metallurgy & Metallurgical Engineering
SC Energy & Fuels; Metallurgy & Metallurgical Engineering
GA BCW20
UT WOS:000311641600012
ER
PT S
AU Guildenbecher, DR
Gao, J
Reu, PL
Chen, J
AF Guildenbecher, Daniel R.
Gao, Jian
Reu, Phillip L.
Chen, Jun
BE Schmit, J
Creath, K
Towers, CE
Burke, J
TI Digital holography reconstruction algorithms to estimate the morphology
and depth of non-spherical, absorbing particles
SO INTERFEROMETRY XVI: TECHNIQUES AND ANALYSIS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Interferometry XVI - Techniques and Analysis
CY AUG 13-15, 2012
CL San Diego, CA
SP SPIE
DE Digital holography; particle detection; depth detection; non-spherical
particle morphology
ID IN-LINE HOLOGRAPHY; FRESNEL DIFFRACTION; EXTRACTION; APERTURES;
LOCATION; SYSTEM; SIZE
AB In digital holography an object wave is numerically reconstructed from a recorded hologram. Using this technique it is possible to detect the position and size of particles in a 3D domain. In this work, particular focus is placed on quantification of particles with non-spherical morphologies. The in-line configuration is chosen due to the simplicity of the optical setup and minimal distortions of in-plane morphologies. However, this geometry is also characterized by a large depth-of-focus and high uncertainty in the detected depth. To quantify these uncertainties, this work begins with the definition of a non-dimensional model of hologram recording and reconstruction applied to single spherical and non-spherical particles. Typical CCD noise sources are included. Application of this model to two particle detection methods reveals the relevant merits and limitations of each particle detection method. From the lessons learned, a new hybrid particle detection method is proposed. Simulations indicate the hybrid method significantly improves upon the accuracy of the measured depth and particle morphologies. Furthermore, the proposed method automatically determines the optimum threshold for each particle, and, therefore, requires minimal user inputs. Finally, initial experimental results for spherical particles confirm the accuracy of the proposed hybrid method.
C1 [Guildenbecher, Daniel R.; Reu, Phillip L.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Gao, Jian; Chen, Jun] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA.
RP Guildenbecher, DR (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM drguild@sandia.gov
RI Gao, Jian/Q-6457-2016
OI Gao, Jian/0000-0003-3744-453X
FU United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX The authors would like to thank Daniel J. Scoglietti for help with the
optical setup and Lindsay M. Gloe for the particle size measurements
using the Malvern Mastersizer, both are from Sandia National
Laboratories. Sandia National Laboratories is a multiprogram laboratory
operated by Sandia Corporation, a Lockheed Martin Company, for the
United States Department of Energy's National Nuclear Security
Administration under contract No. DE-AC04-94AL85000.
NR 26
TC 2
Z9 2
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9210-4
J9 PROC SPIE
PY 2012
VL 8493
AR 849303
DI 10.1117/12.928869
PG 12
WC Optics; Radiology, Nuclear Medicine & Medical Imaging; Spectroscopy
SC Optics; Radiology, Nuclear Medicine & Medical Imaging; Spectroscopy
GA BCZ60
UT WOS:000312212400003
ER
PT J
AU Gladish, CV
Holland, DM
Holland, PR
Price, SF
AF Gladish, Carl V.
Holland, David M.
Holland, Paul R.
Price, Stephen F.
TI Ice-shelf basal channels in a coupled ice/ocean model
SO JOURNAL OF GLACIOLOGY
LA English
DT Article
ID OCEAN CIRCULATION BENEATH; PINE ISLAND GLACIER; WEST ANTARCTICA; SHEET
DYNAMICS; GREENLAND; WATERS; FLOW; VELOCITY; RETREAT; PLUMES
AB A numerical model for an interacting ice shelf and ocean is presented in which the ice-shelf base exhibits a channelized morphology similar to that observed beneath Petermann Gletscher's (Greenland) floating ice shelf. Channels are initiated by irregularities in the ice along the grounding line and then enlarged by ocean melting. To a first approximation, spatially variable basal melting seaward of the grounding line acts as a steel-rule die or a stencil, imparting a channelized form to the ice base as it passes by. Ocean circulation in the region of high melt is inertial in the along-channel direction and geostrophically balanced in the transverse direction. Melt rates depend on the wavelength of imposed variations in ice thickness where it enters the shelf, with shorter wavelengths reducing overall melting. Petermann Gletscher's narrow basal channels may therefore act to preserve the ice shelf against excessive melting. Overall melting in the model increases for a warming of the subsurface water. The same sensitivity holds for very slight cooling, but for cooling of a few tenths of a degree a reorganization of the spatial pattern of melting leads, surprisingly, to catastrophic thinning of the ice shelf 12 km from the grounding line. Subglacial discharge of fresh water along the grounding line increases overall melting. The eventual steady state depends on when discharge is initiated in the transient history of the ice, showing that multiple steady states of the coupled system exist in general.
C1 [Gladish, Carl V.] New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates.
[Gladish, Carl V.; Holland, David M.] NYU, New York, NY USA.
[Holland, Paul R.] British Antarctic Survey, NERC, Cambridge CB3 0ET, England.
[Price, Stephen F.] Los Alamos Natl Lab, Los Alamos, NM USA.
RP Gladish, CV (reprint author), New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates.
EM cvg222@nyu.edu
RI Holland, Paul/G-2796-2012; Price, Stephen /E-1568-2013
OI Price, Stephen /0000-0001-6878-2553
FU IMPACTS project; US Department of Energy's Program in Biological and
Environmental Research
FX We thank Andrew Fleming and Tom Milgate for providing Figure 1. Bill
Lipscomb provided valuable guidance regarding model coupling. Adrian
Jenkins made helpful suggestions regarding entrainment and subglacial
discharge. This study was funded by the IMPACTS project sponsored by the
US Department of Energy's Program in Biological and Environmental
Research.
NR 48
TC 24
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U1 2
U2 28
PU CAMBRIDGE UNIV PRESS
PI CAMBRIDGE
PA EDINBURGH BLDG, SHAFTESBURY RD, CB2 8RU CAMBRIDGE, ENGLAND
SN 0022-1430
EI 1727-5652
J9 J GLACIOL
JI J. Glaciol.
PY 2012
VL 58
IS 212
BP 1227
EP 1244
DI 10.3189/2012JoG12J003
PG 18
WC Geography, Physical; Geosciences, Multidisciplinary
SC Physical Geography; Geology
GA 056HQ
UT WOS:000312479400017
ER
PT J
AU Gallagher, KG
Dees, DW
Jansen, AN
Abraham, DP
Kang, SH
AF Gallagher, Kevin G.
Dees, Dennis W.
Jansen, Andrew N.
Abraham, Daniel P.
Kang, Sun-Ho
TI A Volume Averaged Approach to the Numerical Modeling of Phase-Transition
Intercalation Electrodes Presented for LixC6
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID LITHIUM-GRAPHITE INTERCALATION; ION POSITIVE ELECTRODES; STAGE
TRANSFORMATION; DISCHARGE MODEL; NEGATIVE ELECTRODE; BATTERY MATERIALS;
INSERTION CELL; GENERAL-THEORY; KINETICS; LIFEPO4
AB An approach for the volume averaged numerical modeling of phase-transition intercalation electrodes is presented for lithiated graphite, LixC6, in lithium-ion batteries. The proposed method directly treats phase formation and growth through a modified form of the Avrami equation enabling the physics-based mathematical model to capture the additional time constant observed in the two phase regions of lithiated graphite as ell as a portion of the hysteresis commonly observed between charge and discharge voltage. The graphite phase diagram was taken to be composed of three stages, or phases, each with a Nernstian or ideal solution based equilibrium potential function. The behavior of the potential rise from a current pulse in the two-phase region is matched well with this methodology resulting in higher valued diffusion coefficients than found when only a single-phase approach is used. Simulated results for mesocarbon microbeads show the co-existence of all three phases within the electrode during higher rate discharges. Concentration dependent diffusion coefficients are found to be necessary to match experimental results at rates significantly higher than 1C. The model is shown to be capable of exhibiting core-shell behavior when fitted phase-transformation rate constants are sufficiently high in value, although not observed for MCMB. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.015301jes] All rights reserved.
C1 [Gallagher, Kevin G.; Dees, Dennis W.; Jansen, Andrew N.; Abraham, Daniel P.; Kang, Sun-Ho] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Gallagher, KG (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM kevin.gallagher@anl.gov
RI Jansen, Andrew/Q-5912-2016
OI Jansen, Andrew/0000-0003-3244-7790
FU Vehicle Technologies Program, Hybrid and Electric Systems at the U.S.
Department of Energy, Office of Energy Efficiency and Renewable Energy;
Argonne, a U.S. Department of Energy Office of Science laboratory
[DE-AC02-06CH11357]; DOE Vehicle Technologies Program (VTP); Applied
Battery Research (ABR) for Transportation Program
FX Support from the Vehicle Technologies Program, Hybrid and Electric
Systems, David Howell (Team Lead) and Peter Faguy, at the U.S.
Department of Energy, Office of Energy Efficiency and Renewable Energy,
is gratefully acknowledged. The submitted manuscript has been created by
UChicago Argonne, LLC, Operator of Argonne National Laboratory
("Argonne"). Argonne, a U.S. Department of Energy Office of Science
laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S.
Government retains for itself, and others acting on its behalf, a
paid-up nonexclusive, irrevocable worldwide license in said article to
reproduce, prepare derivative works, distribute copies to the public,
and perform publicly and display publicly, by or on behalf of the
Government. The single-layer pouch cells were produced at the U.S.
Department of Energy's (DOE) Cell Fabrication Facility, Argonne National
Laboratory. The Cell Fabrication Facility is fully supported by the DOE
Vehicle Technologies Program (VTP) within the core funding of the
Applied Battery Research (ABR) for Transportation Program.
NR 53
TC 15
Z9 15
U1 3
U2 53
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A2029
EP A2037
DI 10.1149/2.015301jes
PG 9
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500017
ER
PT J
AU Stephenson, D
Kim, S
Chen, F
Thomsen, E
Viswanathan, V
Wang, W
Sprenkle, V
AF Stephenson, David
Kim, Soowhan
Chen, Feng
Thomsen, Edwin
Viswanathan, Vilayanur
Wang, Wei
Sprenkle, Vincent
TI Electrochemical Model of the Fe/V Redox Flow Battery
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID CELL MODEL; ELECTROLYTE
AB A zero-dimensional electrochemical model of the Fe/V redox flow battery (RFB) is presented that can model RFB performance at low flow rates (< 0.5 mL min(-1) cm(-2)) and varied temperatures. The electrochemical model is appropriate for practical RFBs and provides good agreement with experimental data. In addition, a proposed non-ideal electrode model is introduced that accounts for higher voltage losses at low flow rates. Semi-quantitative operation strategies and electrode design guidelines can be obtained from the model. We found that ohmic losses associated with the electrolyte were dominating our electrode losses, which means operating the cell at higher temperature will reduce electrolyte ohmic losses and viscosity, thus leading to higher system efficiency. Thinner electrodes than the 4.5-mm-thick felt used in this study should reduce ohmic losses as well as pumping losses if the same space velocity is maintained. This electrochemical model can be easily incorporated into system-level and cost models, which will help in system optimization, system control, and pump selection and help avoid potential risks of large scale RFB system development. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.052212jes] All rights reserved.
C1 [Stephenson, David; Kim, Soowhan; Chen, Feng; Thomsen, Edwin; Viswanathan, Vilayanur; Wang, Wei; Sprenkle, Vincent] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Stephenson, D (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA.
EM David.Stephenson@pnnl.gov; soowhankim@gmail.com
RI Wang, Wei/F-4196-2010; Chen, Feng/A-9314-2013
OI Wang, Wei/0000-0002-5453-4695;
FU U.S. Department of Energy (DOE) Office of Electricity Delivery and
Energy Reliability (OE); DOE by Battelle [DE-AC05-76RL01830]
FX The authors acknowledge the financial support from the U.S. Department
of Energy (DOE) Office of Electricity Delivery and Energy Reliability
(OE). We are grateful for useful discussions with Liyu Li and Zhenguo
Yang, former program managers at the Pacific Northwest National
Laboratory, who are now at UniEnergy Technologies. We are also grateful
for useful discussions with Dr. Imre Gyuk, the program manager of the
Energy Storage and Power Electronics Program at DOE-OE. Pacific
Northwest National Laboratory is a multiprogram national laboratory
operated for the DOE by Battelle under Contract DE-AC05-76RL01830.
NR 32
TC 8
Z9 9
U1 3
U2 26
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A1993
EP A2000
DI 10.1149/2.052212jes
PG 8
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500011
ER
PT J
AU Tang, M
Newman, J
AF Tang, Maureen
Newman, John
TI Why is the Solid-Electrolyte-Interphase Selective? Through-Film
Ferrocenium Reduction on Highly Oriented Pyrolytic Graphite
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID LI-ION CELLS; OVERCHARGE PROTECTION; METAL-ELECTRODES; BATTERIES;
SPECTROSCOPY; CARBON; MODEL; SALT; SEI
AB To determine if the solid-electrolyte-interphase (SEI) selectively permits reduction of redox shuttles because of specific surface interactions, through-film ferrocenium reduction was studied on the edge and basal planes of highly oriented pyrolytic graphite (HOPG). Monitoring ferrocene kinetics in-situ during SEI formation demonstrated that the SEI formed in LiPF6-based electrolyte is unstable on both graphite orientations, and that introducing just 1.6 mM of PF6- to the electrolyte chemically dissolves the SEI formed in LiClO4-based electrolyte. When PF6- was avoided completely, a 2 V overpotential was sufficient to reduce ferrocenium through the SEI on the basal plane, suggesting through-film tunneling. On the edge plane, more complicated behavior was observed. On both orientations, the shuttle cation can function as an oxidizing agent that corrodes the SEI. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.028212jes] All rights reserved.
C1 [Tang, Maureen; Newman, John] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
[Tang, Maureen; Newman, John] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Tang, M (reprint author), Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA.
EM mtang@berkeley.edu
FU Office of Vehicle Technologies of the U.S. Department of Energy
[DE-AC02-05CH11231]
FX Jeff Dahn, John Kerr, and Gao Liu contributed suggestions for the
selectivity of SEI that led to this study. This work was supported by
the Assistant Secretary for Energy Efficiency and Renewable Energy,
Office of Vehicle Technologies of the U.S. Department of Energy under
Contract No. DE-AC02-05CH11231.
NR 29
TC 12
Z9 12
U1 2
U2 52
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A1922
EP A1927
DI 10.1149/2.028212jes
PG 6
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500002
ER
PT J
AU Tenhaeff, WE
Perry, KA
Dudney, NJ
AF Tenhaeff, W. E.
Perry, K. A.
Dudney, N. J.
TI Impedance Characterization of Li Ion Transport at the Interface between
Laminated Ceramic and Polymeric Electrolytes
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID LITHIUM BATTERIES; COMPOSITE ELECTROLYTES; PHASE-DIAGRAMS; CONDUCTIVITY;
BEHAVIOR
AB Large, dominating resistances to lithium transport at interfaces between polymeric and ceramic electrolytes is a significant limitation that must be resolved for the development of composite solid electrolytes. Laminated bilayers of lithium ion conducting glass ceramics and polymer electrolytes were studied in order to provide well-defined interfaces for the quantification of interfacial resistances. A completely dry fabrication protocol was developed to ensure intimate contact between the two phases. Interfacial resistances were then characterized by impedance spectroscopy, which revealed small, statistically significant resistances above the melting temperatures of the polymer electrolytes. These interfacial processes did not dominate the overall resistive response, representing a significant improvement over previous observations. Characterization of the laminated electrolytes by scanning electron microscopy (SEM) revealed intimate interfacial contact between the phases, and energy dispersive X-ray spectroscopy (EDS) confirmed the absence of significant compositional deviations at the interfaces. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.063212jes] All rights reserved.
C1 [Tenhaeff, W. E.; Perry, K. A.; Dudney, N. J.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Tenhaeff, WE (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
EM tenhaeffwe@oml.gov
RI Dudney, Nancy/I-6361-2016
OI Dudney, Nancy/0000-0001-7729-6178
FU ORNL's Shared Research Equipment (ShaRE) User Facility; Office of Basic
Energy Sciences, U.S. Department of Energy
FX This work was supported by the Assistant Secretary for Energy Efficiency
and Renewable Energy, Office of Vehicle Technologies of the U.S.
Department of under the Batteries for Advanced Transportation
Technologies (BATT) Program. Research also supported by ORNL's Shared
Research Equipment (ShaRE) User Facility, which is sponsored by the
Office of Basic Energy Sciences, U.S. Department of Energy.
NR 34
TC 5
Z9 5
U1 3
U2 59
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A2118
EP A2123
DI 10.1149/2.063212jes
PG 6
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500030
ER
PT J
AU Yang, XL
Peng, G
Zhang, LL
Liang, G
Duan, S
Huang, YH
Ignatov, A
Croft, MC
AF Yang, Xue-Lin
Peng, Gang
Zhang, Lu-Lu
Liang, Gan
Duan, Song
Huang, Yun-Hui
Ignatov, Alexander
Croft, Mark C.
TI Enhanced Electrochemical Performance of LiFePO4 Cathode Material
Promoted by CdO and Carbon Co-Coating
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID LITHIUM-ION BATTERIES; COMPOSITE
AB A novel CdO and carbon co-coated LiFePO4 (LFP) cathode material has been synthesized, and the effect of CdO on the physicochemical properties and electrochemical performance has been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-Ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), transmission electron microscopy (TEM) and electrochemical measurements. The results show that the LFP/(C+CdO) particles are coated with a mixed layer (about 2 similar to 3 nm) combined by amorphous carbon and CdO. Compared to the LFP/C electrode, the capacity retention ratio and high C-rate performance for LFP/(C+CdO) have been effectively improved, which is due to the enhanced structural stability, the reduced charge-transfer resistance, and the increased electronic conductivity. Therefore, the CdO and carbon co-coating is an effective surface modification technique. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.014301jes] All rights reserved.
C1 [Yang, Xue-Lin; Peng, Gang; Zhang, Lu-Lu; Duan, Song] Three Gorges Univ, Coll Mech & Mat Engn, Yichang 443002, Hubei, Peoples R China.
[Liang, Gan] Sam Houston State Univ, Dept Phys, Huntsville, TX 77341 USA.
[Huang, Yun-Hui] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China.
[Ignatov, Alexander; Croft, Mark C.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA.
[Croft, Mark C.] Brookhaven Natl Lab, NSLS, Upton, NY 11973 USA.
RP Yang, XL (reprint author), Three Gorges Univ, Coll Mech & Mat Engn, Yichang 443002, Hubei, Peoples R China.
EM xlyang@ctgu.edu.cn; luluzhang924@gmail.com
RI Huang, Yunhui/C-3752-2014
FU Natural Science Foundation of China [51272128, 50972075, 50825203];
Excellent Youth Foundation of Hubei Scientific Committee [2011CDA093];
National Science Foundation [CHE-0718482]; Research Corporation for
Science Advancement; ERG from Sam Houston State University
FX This work was financially supported by Natural Science Foundation of
China (grant nos. 51272128, 50972075, 50825203), Excellent Youth
Foundation of Hubei Scientific Committee (2011CDA093), National Science
Foundation under Grants (No. CHE-0718482), an award from Research
Corporation for Science Advancement and an ERG grant from Sam Houston
State University. Moreover, the authors are grateful to Dr. Jianlin Li
at Three Gorges University for his kind support to our research and to
the staff at Beam Line X-19A of NSLS for the assistance in XAS
measurement.
NR 26
TC 4
Z9 4
U1 1
U2 30
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A2096
EP A2099
DI 10.1149/2.014301jes
PG 4
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500027
ER
PT J
AU Zhu, Y
Li, Y
Bettge, M
Abraham, DP
AF Zhu, Ye
Li, Yan
Bettge, Martin
Abraham, Daniel P.
TI Positive Electrode Passivation by LiDFOB Electrolyte Additive in
High-Capacity Lithium-Ion Cells
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID GRAPHITE ANODES; BATTERIES; DIFLUORO(OXALATO)BORATE
AB The effect of LiF2BC2O4 (LiDFOB) electrolyte additive on the capacity and impedance characteristics of cells with Li1.2Ni0.15Mn0.55Co0.1O2-based positive, graphite-based negative and LiPF6-based electrolyte is evaluated using a combination of electrochemical cycling and surface analysis techniques. The impedance rise in these cells occurs primarily at the positive electrode whereas the capacity loss results from lithium trapping at the negative electrode. The LiDFOB serves as a bifunctional additive and reduces both cell capacity loss and impedance rise by reacting at both electrodes; probable reaction mechanisms have been highlighted in this article. X-ray photoelectron spectroscopy (XPS) data show that the LiDFOB additive forms a thicker passivation layer that inhibits electrolyte oxidation and reduces dissolution of Mn, Ni, Co ions from the positive electrode. Secondary ion mass spectroscopy (SIMS) data show that a thinner but more robust SEI forms at the negative electrode, which helps maintain cell capacity. The synergistic effects of LiDFOB at both electrodes results in a marked improvement in cell electrochemical performance. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.083212jes] All rights reserved.
C1 [Zhu, Ye; Li, Yan; Bettge, Martin; Abraham, Daniel P.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Li, Yan] Univ Rochester, Mat Sci Program, Rochester, NY 14627 USA.
RP Zhu, Y (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM abraham@anl.gov
RI Zhu, Ye/H-3602-2012; Li, Yan/H-2957-2012
OI Li, Yan/0000-0002-9801-7243
FU U.S. Department of Energy's Vehicle Technologies Program; U.S.
Department of Energy Office of Science laboratory [DE-AC02-06CH11357];
DOE
FX Support from the U.S. Department of Energy's Vehicle Technologies
Program, specifically from Dave Howell and Peter Faguy, is gratefully
acknowledged. The submitted manuscript has been created by UChicago
Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"),
Argonne, a U.S. Department of Energy Office of Science laboratory, is
operated under Contract No. DE-AC02-06CH11357. We acknowledge use of the
Center for Microanalysis of Materials (CMM) at the Frederick Seitz
Materials Research Laboratory, University of Illinois at
Urbana-Champaign (Illinois), and acknowledge discussions with R. Haasch
and T. Spila. We are grateful to B. Polzin, A. Jansen, and S. Trask from
the U.S. Department of Energy's (DOE) Cell Fabrication Facility (CFF),
Argonne National Laboratory for providing the electrodes used in this
work. The CFF is fully supported by the DOE Vehicle Technologies Program
(VTP) within the core funding of the Applied Battery Research (ABR) for
Transportation Program. We also acknowledge valuable discussions with D.
Dees and W. Lu during the course of this work.
NR 26
TC 68
Z9 71
U1 9
U2 77
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP A2109
EP A2117
DI 10.1149/2.083212jes
PG 9
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500029
ER
PT J
AU Mason, KS
Neyerlin, KC
Kuo, MC
Horning, KC
More, KL
Herring, AM
AF Mason, K. Sykes
Neyerlin, Kenneth C.
Kuo, Mei-Chen
Horning, Kiersten C.
More, Karren L.
Herring, Andrew M.
TI Investigation of a Silicotungstic Acid Functionalized Carbon on Pt
Activity and Durability for the Oxygen Reduction Reaction
SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY
LA English
DT Article
ID ELECTROLYTE FUEL-CELLS; SUPPORTED PLATINUM NANOPARTICLES; PARTICLE-SIZE;
CRYSTALLITE SIZE; CATALYSTS; CO; SURFACES; ELECTROREDUCTION;
HETEROPOLYACIDS; OXIDATION
AB Colloidal Pt prepared by an ethylene glycol reduction method was deposited onto Ketjen black carbon supports functionalized with (0, 3.2, 7.1, and 15.9wt%) 11-silicotungstic acid (Pt/SiW11-C). Electrochemical characterization of the catalysts was performed using rotating disk electrodes (RDE) in 0.1 M HClO4 electrolyte. XRD and TEM showed smaller crystallite size and more uniform deposition of Pt nanoparticles for Pt/SiW11-C catalysts. respectively. A maximum in the ORR mass activity of 373 mA/mg(Pt) was observed for the 3.2wt% SiW11 catalyst. an 18% improvement over Pt/C. An increase in the electrochemical area (ECA) due to lower Pt particle size and more narrow size distribution is attributed to providing the mass activity enhancement. After 30,000 durability cycles in the potential range 0.6-1.0 V. Pt/SiW11-C showed less Pt particle growth (TEM), and a factor of 1.4 improvement in terms of mass activity retention. After 6.000 durability cycles in the potential range 1.0-1.6 V, Pt/SiW11-C showed a factor of 2 increase in mass activity retention compared to Pt/C. The improvement is attributed to a slower rate of carbon corrosion. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.068212jes] All rights reserved.
C1 [Mason, K. Sykes; Kuo, Mei-Chen; Horning, Kiersten C.; Herring, Andrew M.] Colorado Sch Mines, Dept Chem & Biol Engn, Golden, CO 80401 USA.
[Mason, K. Sykes; Neyerlin, Kenneth C.] Natl Renewable Energy Lab, Hydrogen Technol & Syst Ctr, Golden, CO 80401 USA.
[More, Karren L.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Mason, KS (reprint author), Colorado Sch Mines, Dept Chem & Biol Engn, Golden, CO 80401 USA.
EM aherring@mines.edu
RI More, Karren/A-8097-2016;
OI More, Karren/0000-0001-5223-9097; Herring, Andrew/0000-0001-7318-5999
FU US DOE office of Energy Efficiency and Renewable Energy
[DE-AC36-08GO28308]
FX We thank Shyam Kocha from the National Renewable Energy Laboratory
(NREL) and Satyananda Kishore Pilli for many useful discussions. We
thank the US DOE office of Energy Efficiency and Renewable Energy for
financial support under contract No DE-AC36-08GO28308. We thank the
Nanomaterials Characterization Facility (CU-Boulder) for XPS
experiments. Finally, we thank Huffman Laboratories for ICP-AES
analysis.
NR 46
TC 1
Z9 2
U1 2
U2 22
PU ELECTROCHEMICAL SOC INC
PI PENNINGTON
PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
SN 0013-4651
J9 J ELECTROCHEM SOC
JI J. Electrochem. Soc.
PY 2012
VL 159
IS 12
BP F871
EP F879
DI 10.1149/2.068212jes
PG 9
WC Electrochemistry; Materials Science, Coatings & Films
SC Electrochemistry; Materials Science
GA 052XI
UT WOS:000312233500071
ER
PT B
AU Hackenberg, RE
AF Hackenberg, R. E.
BE Pereloma, E
Edmonds, DV
TI The historical development of phase transformations understanding in
ferrous alloys
SO PHASE TRANSFORMATIONS IN STEELS, VOL 1: FUNDAMENTALS AND
DIFFUSION-CONTROLLED TRANSFORMATIONS
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE history; kinetics; metallography; microstructure; X-ray diffraction
ID IRON-CARBON ALLOYS; FE-C ALLOYS; BAINITE TRANSFORMATION; MARTENSITIC
TRANSFORMATIONS; FERRITE TRANSFORMATION; PROEUTECTOID FERRITE; SILICON
STEEL; SOLID-STATE; FREE-ENERGY; INTERNATIONAL-CONFERENCE
AB This chapter reviews the historical evolution of phase transformations understanding as it was developed in steels and other ferrous alloys. The focus is on the discoveries, dead ends, confusions, controversies, and achievements in the 1880-1925 period when the age-old 'hardening problem' in steel was pursued using metallography, thermal analysis, and the Gibbs phase rule. The shift in paradigm regarding metal structure and phase transformations was completed in the following period, 1925-1970, when breakthroughs afforded by X-ray diffraction and other techniques shed new light on all transformations. The evolving interactions of physical metallurgy with chemistry, physics, and other fields will be highlighted.
C1 Los Alamos Natl Lab, Mat Sci & Technol Div MST 6, Los Alamos, NM 87545 USA.
RP Hackenberg, RE (reprint author), Los Alamos Natl Lab, Mat Sci & Technol Div MST 6, Mail Stop G770,POB 1663, Los Alamos, NM 87545 USA.
EM roberth@lanl.gov
NR 344
TC 0
Z9 0
U1 0
U2 4
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-610-4; 978-1-84569-970-3
J9 WOODHEAD PUBL MATER
PY 2012
BP 3
EP 55
PG 53
WC Metallurgy & Metallurgical Engineering
SC Metallurgy & Metallurgical Engineering
GA BCW17
UT WOS:000311640100003
ER
PT J
AU Schryver, J
Shankar, M
Xu, SH
AF Schryver, Jack
Shankar, Mallikarjun
Xu, Songhua
GP ACM
TI Moving from Descriptive to Causal Analytics: Case Study of Discovering
Knowledge from US Health Indicators Warehouse
SO PROCEEDINGS OF THE 2012 INTERNATIONAL WORKSHOP ON SMART HEALTH AND
WELLBEING
LA English
DT Proceedings Paper
CT ACM International Workshop on Smart Health and Wellbeing (SHB)
Co-located with 21st ACM International Conference on Information and
Knowledge Management
CY OCT 29, 2012
CL Maui, HI
SP Assoc Com Machinery Special Interest Grp Information Retrieval (ACN SIGIR), Assoc Com Machinery SIGWEB (ACM SIGWEB)
DE Community health indicators; multivariate statistics; machine learning;
visual analytics
ID MECHANISMS
AB The knowledge management community has introduced a multitude of methods for knowledge discovery on large datasets. In the context of public health intelligence, we integrated and incorporated some of these methods into an analyst's workflow that proceeds from the data-centric descriptive level of analysis to the model-centric causal level of reasoning. We show several case studies of the proposed analyst's workflow as applied to the US Health Indicators Warehouse (HIW), which is a medium scale, public dataset regarding community health information as collected by the US federal government. In our case studies, we demonstrate a series of visual analytics efforts targeted at the HIW, including visual analysis according to correlation matrices, multivariate outlier analysis, multiple linear regression of Medicare costs, confirmatory factor analysis, and hybrid scatterplot and heatmap visualization for distributions of a group of health indicators. We conclude by sketching a preliminary framework for examining causal dependence hypotheses for future data science research in public health.(1)
C1 [Schryver, Jack; Shankar, Mallikarjun; Xu, Songhua] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA.
RP Schryver, J (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
EM schryverjc@ornl.gov; shankarm@ornl.gov; xus1@ornl.gov
OI Shankar, Mallikarjun/0000-0001-5289-7460
NR 17
TC 1
Z9 1
U1 1
U2 9
PU ASSOC COMPUTING MACHINERY
PI NEW YORK
PA 1515 BROADWAY, NEW YORK, NY 10036-9998 USA
BN 978-1-4503-1712-2
PY 2012
BP 1
EP 8
PG 8
WC Computer Science, Artificial Intelligence; Computer Science, Information
Systems; Medical Informatics
SC Computer Science; Medical Informatics
GA BDC69
UT WOS:000312660200001
ER
PT J
AU Chi, EC
Kolda, TG
AF Chi, Eric C.
Kolda, Tamara G.
TI ON TENSORS, SPARSITY, AND NONNEGATIVE FACTORIZATIONS
SO SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS
LA English
DT Article
DE nonnegative tensor factorization; nonnegative CANDECOMP-PARAFAC; Poisson
tensor factorization; Lee-Seung multiplicative updates;
majorization-minimization algorithms
ID CONSTRAINED LEAST-SQUARES; MATRIX FACTORIZATION; RECONSTRUCTION
ALGORITHMS; CONVERGENCE; DIVERGENCE; PARAFAC; VALUES
AB Tensors have found application in a variety of fields, ranging from chemometrics to signal processing and beyond. In this paper, we consider the problem of multilinear modeling of sparse count data. Our goal is to develop a descriptive tensor factorization model of such data, along with appropriate algorithms and theory. To do so, we propose that the random variation is best described via a Poisson distribution, which better describes the zeros observed in the data as compared to the typical assumption of a Gaussian distribution. Under a Poisson assumption, we fit a model to observed data using the negative log-likelihood score. We present a new algorithm for Poisson tensor factorization called CANDECOMP-PARAFAC alternating Poisson regression (CP-APR) that is based on a majorization-minimization approach. It can be shown that CP-APR is a generalization of the Lee-Seung multiplicative updates. We show how to prevent the algorithm from converging to non-KKT points and prove convergence of CP-APR under mild conditions. We also explain how to implement CP-APR for large-scale sparse tensors and present results on several data sets, both real and simulated.
C1 [Chi, Eric C.] Univ Calif Los Angeles, Dept Human Genet, Los Angeles, CA 90095 USA.
[Kolda, Tamara G.] Sandia Natl Labs, Livermore, CA USA.
RP Chi, EC (reprint author), Univ Calif Los Angeles, Dept Human Genet, Los Angeles, CA 90095 USA.
EM ecchi@ucla.edu; tgkolda@sandia.gov
RI Kolda, Tamara/B-1628-2009;
OI Kolda, Tamara/0000-0003-4176-2493; Chi, Eric/0000-0003-4647-0895
FU U.S. Department of Energy Computational Science Graduate Fellowship
[DE-FG02-97ER25308]; U.S. Department of Energy; U.S. Department of
Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
FX The work of this author was fully supported by the U.S. Department of
Energy Computational Science Graduate Fellowship under grant
DE-FG02-97ER25308.; The work of this author was funded by the applied
mathematics program at the U.S. Department of Energy and Sandia National
Laboratories, a multiprogram laboratory operated by Sandia Corporation,
a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 56
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Z9 23
U1 1
U2 21
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 0895-4798
J9 SIAM J MATRIX ANAL A
JI SIAM J. Matrix Anal. Appl.
PY 2012
VL 33
IS 4
BP 1272
EP 1299
DI 10.1137/110859063
PG 28
WC Mathematics, Applied
SC Mathematics
GA 059VB
UT WOS:000312732500012
ER
PT S
AU Bionta, MR
French, D
Cryan, JP
Glownia, JM
Hartmann, N
Nicholson, DJ
Baker, K
Bostedt, C
Cammarrata, M
Chollet, M
Ding, YT
Fritz, DM
Durbin, SM
Feng, YP
Harmand, M
Fry, AR
Kane, DJ
Krzywinski, J
Lemke, HT
Messerschmidt, M
Ratner, DF
Schorb, S
Toleikis, S
Zhu, DL
White, WE
Coffee, RN
AF Bionta, Mina R.
French, Doug
Cryan, James P.
Glownia, James M.
Hartmann, Nick
Nicholson, David J.
Baker, Kevin
Bostedt, Christoph
Cammarrata, Marco
Chollet, Matthieu
Ding, Yuntao
Fritz, Davis M.
Durbin, Steve M.
Feng, Yiping
Harmand, Marion
Fry, Alan R.
Kane, Daniel J.
Krzywinski, Jacek
Lemke, Henrik T.
Messerschmidt, Marc
Ratner, Daniel F.
Schorb, Sebastian
Toleikis, Sven
Zhu, Diling
White, William E.
Coffee, Ryan N.
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Spectral encoding based measurement of x-ray/optical relative delay to
similar to 10 fs rms
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE ultrafast optics; ultrafast x-rays; thin films; ultrafast dynamics;
LCLS; FEL; dielectric response; spectral encoding
ID RAYS
AB A recently demonstrated single-shot measurement of the relative delay between x-ray FEL pulses and optical laser pulses has now been improved to similar to 10 fs rms error and has successfully been demonstrated for both soft and hard x-ray pulses. It is based on x-ray induced step-like reduction in optical transmissivity of a semiconductor membrane (Si3N4). The transmissivity is probed by an optical continuum spanning 450 - 650 nm where spectral chirp provides a mapping of the step in spectrum to the arrival time of the x-ray pulse relative to the optical laser system.
C1 [Bionta, Mina R.; French, Doug; Glownia, James M.; Hartmann, Nick; Nicholson, David J.; Bostedt, Christoph; Chollet, Matthieu; Ding, Yuntao; Fritz, Davis M.; Feng, Yiping; Fry, Alan R.; Krzywinski, Jacek; Lemke, Henrik T.; Messerschmidt, Marc; Ratner, Daniel F.; Schorb, Sebastian; Zhu, Diling; White, William E.; Coffee, Ryan N.] SLAC Natl accelerator Lab, Linac Coherent Light source, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
[Cryan, James P.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Glownia, James M.; Nicholson, David J.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA.
[Glownia, James M.] SLAC Natl Accelerator Lab, PULSE Inst Ulatrafast Energy Sci, Menlo Pk, CA 94025 USA.
[Baker, Kevin] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Cammarrata, Marco; Durbin, Steve M.] Univ Rennes, F-35014 Rennes, France.
[Harmand, Marion; Toleikis, Sven] DESY, Hamburg, Germany.
[Kane, Daniel J.] Mesa Photon LLC, Santa Fe, NM 87505 USA.
RP Bionta, MR (reprint author), SLAC Natl accelerator Lab, Linac Coherent Light source, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
EM mbionta@slac.stanford.edu; offee@slac.stanford.edu
RI Messerschmidt, Marc/F-3796-2010; harmand, marion/Q-1248-2016; Lemke,
Henrik Till/N-7419-2016
OI Messerschmidt, Marc/0000-0002-8641-3302; harmand,
marion/0000-0003-0713-5824; Lemke, Henrik Till/0000-0003-1577-8643
NR 22
TC 3
Z9 3
U1 2
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 85040M
DI 10.1117/12.929097
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900014
ER
PT S
AU Caleman, C
Timneanu, N
Martin, AV
White, TA
Scott, HA
Barty, A
Aquila, A
Chapman, HN
AF Caleman, Carl
Timneanu, Nicusor
Martin, Andrew V.
White, Thomas A.
Scott, Howard A.
Barty, Anton
Aquila, Andrew
Chapman, Henry N.
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Modeling of XFEL induced ionization and atomic displacement in protein
nanocrystals
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE X-ray Free Electron Laser; Serial femtosecond crystallography; non;
local thermodynamics equilibrium; radiation damage
ID FREE-ELECTRON LASER; X-RAY PULSES; RADIATION-DAMAGE; HYDRODYNAMIC
SIMULATION; DENSE-PLASMAS; RESOLUTION; OPERATION; CASCADES; CRYSTALS;
WATER
AB X-ray free-electron lasers enable high-resolution imaging of biological materials by using short enough pulses to outrun many of the effects of radiation damage. Experiments conducted at the LCLS have obtained diffraction data from single particles and protein nanocrystals at doses to the sample over 3 GGy. The details of the interaction of the X-ray FEL pulse with the sample determine the limits of this new paradigm for imaging. Recent studies suggest that in the case of crystalline samples, such as protein nanocrystals, the atomic displacements and loss of bound electrons in the crystal (due to the high X-ray intensity) has the effect of gating the diffraction signal, and hence making the experiment less radiation sensitive. Only the incident photon intensity in the first part of the pulse, before the Bragg diffraction has died out, is relevant to acquiring signal and the rest of the pulse will mainly contribute to a diffuse background. In this work we use a plasma based non-local thermodynamic equilibrium code to explore the displacement and the ionization of a protein nanocrystal at various X-ray wavelengths and intensities.
C1 [Caleman, Carl; Timneanu, Nicusor; White, Thomas A.; Barty, Anton; Chapman, Henry N.] DESY, Ctr Free Electron Laser Sci, Notkestr 85, DE-22607 Hamburg, Germany.
[Caleman, Carl] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden.
[Martin, Andrew V.] Univ Melbourne, ARC Ctr Excellence Coherent Xray Sci, Sch Phys, Melbourne, Vic 3010, Australia.
[Timneanu, Nicusor] Uppsala Univ, Ctr Biomed, Dept Cell & Mol Biol, S-75120 Uppsala, Sweden.
[Scott, Howard A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Chapman, Henry N.] Univ Hamburg, D-22761 Hamburg, Germany.
[Aquila, Andrew] European XFEL GmbH, D-22607 Hamburg, Germany.
RP Caleman, C; Timneanu, N (reprint author), DESY, Ctr Free Electron Laser Sci, Notkestr 85, DE-22607 Hamburg, Germany.
EM carl.caleman@cfel.de; nicusor@xray.bmc.uu.se
RI Timneanu, Nicusor/C-7691-2012;
OI Timneanu, Nicusor/0000-0001-7328-0400; MARTIN,
ANDREW/0000-0003-3704-1829
FU Helmholtz Association through the Center for Free-Electron Laser
Science; The Swedish Research foundation; The Swedish Foundation; The
Swedish National Infrastructure for Computing, UPPMAX [S00111- 71]
FX Helmholtz Association through the Center for Free-Electron Laser
Science, The Swedish Research foundation and The Swedish Foundation for
Strategic Research for financial support. The Swedish National
Infrastructure for Computing, UPPMAX ( project S00111- 71) and Professor
David van der Spoel for computational resources.
NR 51
TC 1
Z9 1
U1 0
U2 13
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 85040H
DI 10.1117/12.929294
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900011
ER
PT S
AU Chuang, YD
Doering, D
Cruz, AG
Tahir, N
Andresen, NC
Chow, KP
Contarato, D
Cummings, CL
Domning, EE
Joseph, J
Pepper, JS
Smith, BV
Zizka, G
Ford, C
Lee, WS
Weaver, M
Pattheye, L
Weizeorickf, J
Denes, P
Hussain, Z
AF Chuang, Yi-De
Doering, Dionisio
Cruz, Alejandro G.
Tahir, Nadeem
Andresen, Nord C.
Chow, Ken P.
Contarato, Devis
Cummings, Curtis L.
Domning, Edward E.
Joseph, John
Pepper, John S.
Smith, Brian V.
Zizka, G.
Ford, Christopher
Lee, Wei-Sheng
Weaver, Matt
Pattheye, Luc
Weizeorickf, John
Denes, Peter
Hussain, Zahid
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Resonant soft X-ray scattering endstation for time-resolved pump-probe
measurements at LCLS
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE time-resolved resonant soft X-ray scattering spectroscopy; electronic
orderings; emergent material properties; pump-probe experiments; cFCCD;
free electron laser
ID MANGANITES; INSULATOR
AB Localized charge, spin and orbital degrees of freedom can compete with electronic itinerancy and such competition lies at the heart of emergent material properties. To study these electronic orderings, resonant soft X-ray scattering (RSXS) spectroscopy has been demonstrated as one of the most powerful direct probes, and its time-resolved capability can be implemented through pump-probe technique. The ultrafast/ultra-intense X-ray pulses from LCLS can be used as the probe in the time-resolved RSXS experiments, but the inherent fluctuations in intensity and timing between pulses can degrade the superior temporal resolution. To overcome such fluctuations, a compact fast CCD (cFCCD) was developed to enable shot-by-shot data acquisitions and a dedicated RSXS endstation, constructed to house this cFCCD and other single-channel photon detectors, has been extensively used at both ALS and LCLS. Time-resolved RSXS experiments on La1.75Sr0.25NiO4 nickelate have revealed an unexpected transient behavior of charge and spin ordering (CO/SO) states. After 800nm laser excitation, the CO can be fully suppressed at higher pump fluence while SO remains detectable, creating a transient state that is not accessible by tuning thermodynamic variables. Furthermore, two distinct time scales are identified in the recovery of CO and can be attributed to the amplitude (fast) and phase (slow) dynamics of order parameter. A new version of cFCCD, with eight times the detection area and the readout electronics moved into vacuum side to minimize the pickup noise, has been developed and will be incorporated into the RSXS endstation.
C1 [Chuang, Yi-De; Cruz, Alejandro G.; Tahir, Nadeem; Hussain, Zahid] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
[Doering, Dionisio; Andresen, Nord C.; Chow, Ken P.; Contarato, Devis; Cummings, Curtis L.; Domning, Edward E.; Joseph, John; Pepper, John S.; Smith, Brian V.; Zizka, G.; Denes, Peter] Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94720 USA.
[Tahir, Nadeem] Nat Ctr Phys, Islamabad 44000, Pakistan.
[Ford, Christopher; Lee, Wei-Sheng; Weaver, Matt] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Pattheye, Luc] Paul Scherrer Inst, CH-5232 Villigen, Switzerland.
[Weizeorickf, John] Argonne Natl Lab, Argonne, IL 60439 USA.
RP Chuang, YD (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
FU U. S. Department of Energy [DE- AC02- 05CH11231]; Department of Energy,
Office of Basic Energy Science, through Stanford Institute for Materials
and Energy Science
FX Lawrence Berkeley National Laboratory is supported by the Director,
Office of Science, Office of Basic Energy Sciences, of the U. S.
Department of Energy under Contract No. DE- AC02- 05CH11231. W. S. Lee
acknowledges support from Department of Energy, Office of Basic Energy
Science, through Stanford Institute for Materials and Energy Science.
NR 24
TC 0
Z9 0
U1 0
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 85040G
DI 10.1117/12.931492
PG 8
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900010
ER
PT S
AU Feng, YP
Zhu, DL
Robert, A
Lemke, HT
Chollet, M
Fritz, DM
Hastings, JB
Feldkamp, JM
Cammarata, M
Moeller, S
Yabashi, M
Tono, K
Huang, XR
AF Feng, Yiping
Zhu, Diling
Robert, Aymeric
Lemke, Henrik T.
Chollet, Matthieu
Fritz, David M.
Hastings, Jerome B.
Feldkamp, Jan M.
Cammarata, Marco
Moeller, Stephen
Yabashi, Makina
Tono, Kensuke
Huang, Xianrong
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Ultra-thin Bragg crystals for LCLS beam-sharing operation
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE LCLS; hard X-rays; SASE; FEL; beam-sharing; silicon; single crystal
AB The advent of X-ray Free-electron Laser (FEL) such as the Linac Coherent Light Source (LCLS) has and will continue to enable breakthroughs and discoveries in a wide range of scientific disciplines including physics, chemistry, structural biology, and material science. It has created high demand on user beamtime that is often left unfulfilled. We report here the fabrication, characterization and X-ray measurements of ultra-thin silicon single-crystal membranes for potentially beam-sharing the LCLS beam. Using a special fabrication process, samples of (111), (110), and (100) orientations were made with thicknesses ranging from 5 to 20 mu m. Both high-resolution rocking curves and white-beam topographic data were first obtained using synchrotron X-rays, demonstrating near ideal diffraction qualities. Subsequent tests using the full LCLS FEL beam revealed lattice distortions from beam-induced membrane vibrations, which were then shown to be effectively reduced by ambient air or with smaller membrane dimensions. These findings are paving a way for a practical beam-sharing implementation at LCLS in the near future.
C1 [Feng, Yiping; Zhu, Diling; Robert, Aymeric; Lemke, Henrik T.; Chollet, Matthieu; Fritz, David M.; Hastings, Jerome B.; Feldkamp, Jan M.; Cammarata, Marco; Moeller, Stephen] SLAC Natl Accelerator Lab, Linac Coherent Light Source, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
[Yabashi, Makina; Tono, Kensuke] RIKEN, SPring 8, Hyogo, Japan.
[Huang, Xianrong] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Feng, YP (reprint author), SLAC Natl Accelerator Lab, Linac Coherent Light Source, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
EM yfeng@slac.stanford.edu
RI Lemke, Henrik Till/N-7419-2016
OI Lemke, Henrik Till/0000-0003-1577-8643
NR 2
TC 3
Z9 3
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 85040V
DI 10.1117/12.930944
PG 6
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900019
ER
PT S
AU Hill, KW
Bitter, M
Delgado-Aparacio, L
Pablant, NA
Beiersdorfer, P
del Rio, MS
Zhang, L
AF Hill, K. W.
Bitter, M.
Delgado-Aparacio, L.
Pablant, N. A.
Beiersdorfer, P.
del Rio, M. Sanchez
Zhang, L.
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI X-Ray Imaging and Imaging Spectroscopy of Fusion Plasmas and
Light-Source Experiments with Spherical Optics and Pixel Array Detectors
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE X-ray; imaging; spectroscopy; diagnostic; plasma; synchrotron
ID SPECTRA; CRYSTALS
AB High resolution (lambda/Delta lambda similar to 10,000) 1D imaging x-ray spectroscopy using a spherically bent crystal and a 2D hybrid pixel array detector (PAD) is used world wide for Doppler measurements of ion-temperature (Ti) and plasma flow-velocity profiles in magnetic confinement fusion (MCF) plasmas. Meter sized plasmas are diagnosed with cm spatial resolution and 10 ms time resolution. This concept can also be used as a diagnostic of small sources, such as inertial confinement fusion (ICF) plasmas and targets on x-ray light source beam lines, with spatial resolution of microns. A new concept of using matched pairs of spherically bent crystals for monochromatic stigmatic 2D x-ray imaging of mm sized sources offers the possibility of spatial resolution of microns and large solid angle, relative to that achieved with pinhole imaging. Other potential applications of the 2D imaging schemes include x-ray lithography and x-ray microscopy for biological and materials science research. Measurements from MFE plasmas, as well as laboratory experiments and ray tracing computations validating the 1D imaging spectroscopy and 2D x-ray imaging techniques will be presented.
C1 [Hill, K. W.; Bitter, M.; Delgado-Aparacio, L.; Pablant, N. A.] Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
[Beiersdorfer, P.] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA.
[del Rio, M. Sanchez] European Synchrotron Radiat Facil, F-38043 Grenoble, France.
[Zhang, L.] Chinese Acad Sci, Inst Plasma Phys, Hefei 23003, Peoples R China.
RP Hill, KW (reprint author), Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA.
EM khill@pppl.gov
FU U. S. Department of Energy [DE- ACO2- 76CHO- 3073]; LLNL [DE- AC52-
07NA- 27344]
FX This work was performed under the auspices of the U. S. Department of
Energy by PPPL under contract DE- ACO2- 76CHO- 3073 and LLNL under
Contract DE- AC52- 07NA- 27344.
NR 27
TC 2
Z9 2
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 850405
DI 10.1117/12.930063
PG 14
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900004
ER
PT S
AU Loh, ND
Starodub, D
Lomb, L
Hampton, CY
Martin, AV
Sierra, RG
Barty, A
Aquila, A
Schulz, J
Steinbrener, J
Shoeman, RL
Kassemeyer, S
Bostedt, C
Bozek, J
Epp, SW
Erk, B
Hartmann, R
Rolles, D
Rudenko, A
Rudek, B
Foucar, L
Kimmel, N
Weidenspointner, G
Hauser, G
Holl, P
Pedersoli, E
Liang, MN
Hunter, MS
Gumprecht, L
Coppola, N
Wunderer, C
Graafsma, H
Maia, FRNC
Ekeberg, T
Hantke, M
Fleckenstein, H
Hirsemann, H
Nass, K
White, TA
Tobias, HJ
Farquar, GR
Benner, WH
Hau-Riege, S
Reich, C
Hartmann, A
Soltau, H
Marchesini, S
Bajt, S
Barthelmess, M
Strueder, L
Ullrich, J
Bucksbaum, P
Hodgson, KO
Frank, M
Schlichting, I
Chapman, HN
Bogan, MJ
AF Loh, N. Duane
Starodub, Dmitri
Lomb, Lukas
Hampton, Christina Y.
Martin, Andrew V.
Sierra, Raymond G.
Barty, Anton
Aquila, Andrew
Schulz, Joachim
Steinbrener, Jan
Shoeman, Robert L.
Kassemeyer, Stephan
Bostedt, Christoph
Bozek, John
Epp, Sascha W.
Erk, Benjamin
Hartmann, Robert
Rolles, Daniel
Rudenko, Artem
Rudek, Benedikt
Foucar, Lutz
Kimmel, Nils
Weidenspointner, Georg
Hauser, Guenter
Holl, Peter
Pedersoli, Emanuele
Liang, Mengning
Hunter, Mark S.
Gumprecht, Lars
Coppola, Nicola
Wunderer, Cornelia
Graafsma, Heinz
Maia, Filipe R. N. C.
Ekeberg, Tomas
Hantke, Max
Fleckenstein, Holger
Hirsemann, Helmut
Nass, Karol
White, Thomas A.
Tobias, Herbert J.
Farquar, George R.
Benner, W. Henry
Hau-Riege, Stefan
Reich, Christian
Hartmann, Andreas
Soltau, Heike
Marchesini, Stefano
Bajt, Sasa
Barthelmess, Miriam
Strueder, Lothar
Ullrich, Joachim
Bucksbaum, Philip
Hodgson, Keith O.
Frank, Matthias
Schlichting, Ilme
Chapman, Henry N.
Bogan, Michael J.
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Profiling structured beams using injected aerosols
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE aerosols; diffraction; imaging; beam profiling; beam diagnostics;
Hartmann sensor; x-ray free-electron laser; LCLS
ID FREE-ELECTRON LASER
AB Profiling structured beams produced by X-ray free-electron lasers (FELs) is crucial to both maximizing signal intensity for weakly scattering targets and interpreting their scattering patterns. Earlier ablative imprint studies describe how to infer the X-ray beam profile from the damage that an attenuated beam inflicts on a substrate. However, the beams in-situ profile is not directly accessible with imprint studies because the damage profile could be different from the actual beam profile. On the other hand, although a Shack-Hartmann sensor is capable of in-situ profiling, its lenses may be quickly damaged at the intense focus of hard X-ray FEL beams. We describe a new approach that probes the in-situ morphology of the intense FEL focus. By studying the translations in diffraction patterns from an ensemble of randomly injected sub- micron latex spheres, we were able to determine the non-Gaussian nature of the intense FEL beam at the Linac Coherent Light Source (SLAC National Laboratory) near the FEL focus. We discuss an experimental application of such a beam-profiling technique, and the limitations we need to overcome before it can be widely applied.
C1 [Loh, N. Duane; Starodub, Dmitri; Hampton, Christina Y.; Sierra, Raymond G.; Bucksbaum, Philip; Hodgson, Keith O.; Bogan, Michael J.] SLAC Natl Accelerator Lab, PULSE Inst, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
[Lomb, Lukas; Steinbrener, Jan; Shoeman, Robert L.; Kassemeyer, Stephan; Schlichting, Ilme] Max Planck Inst Med Forschung, D-69120 Heidelberg, Germany.
[Martin, Andrew V.; Liang, Mengning; Gumprecht, Lars; Fleckenstein, Holger; Nass, Karol; White, Thomas A.; Chapman, Henry N.] DESY, Ctr Free Elect Laser Sci, D-22607 Hamburg, Germany.
[Aquila, Andrew; Schulz, Joachim; Coppola, Nicola] European XFEL GmbH, D-22607 Hamburg, Germany.
[Bostedt, Christoph; Bozek, John] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Epp, Sascha W.; Erk, Benjamin; Rolles, Daniel; Rudenko, Artem; Rudek, Benedikt; Foucar, Lutz] CFEL, Max Planck Adv Study Grp, D-22607 Hamburg, Germany.
[Hartmann, Robert; Holl, Peter; Reich, Christian; Hartmann, Andreas; Soltau, Heike] PNSensor GmbH, D-80803 Munich, Germany.
[Kimmel, Nils; Weidenspointner, Georg; Hauser, Guenter; Strueder, Lothar] Max Planck Inst Halbleiterlabor, D-81739 Munich, Germany.
[Pedersoli, Emanuele] Sincrotrone Trieste, I-34149 Trieste, Italy.
[Hunter, Mark S.; Farquar, George R.; Benner, W. Henry; Hau-Riege, Stefan; Frank, Matthias] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Wunderer, Cornelia; Graafsma, Heinz; Hirsemann, Helmut; Bajt, Sasa; Barthelmess, Miriam] DESY, Photon Sci, D-22607 Hamburg, Germany.
[Maia, Filipe R. N. C.; Marchesini, Stefano] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Ekeberg, Tomas; Hantke, Max] Uppsala Univ, Lab Mol Biophys, Uppsala, Sweden.
[Tobias, Herbert J.] Cornell Univ, Ithaca, NY 14853 USA.
[Ullrich, Joachim] Max Planck Inst Kernphysik, D-69029 Heidelberg, Germany.
RP Loh, ND (reprint author), SLAC Natl Accelerator Lab, PULSE Inst, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
EM uaneloh@slac.stanford.edu; mbogan@slac.stanford.edu
RI Loh, Duane/I-7371-2013; Rudek, Benedikt/A-5100-2017; Bogan,
Mike/I-6962-2012; Schlichting, Ilme/I-1339-2013; Rocha Neves Couto Maia,
Filipe/C-3146-2014; Bozek, John/E-9260-2010; Frank, Matthias/O-9055-2014
OI Epp, Sascha/0000-0001-6366-9113; Pedersoli,
Emanuele/0000-0003-0572-6735; Loh, Duane/0000-0002-8886-510X; graafsma,
heinz/0000-0003-2304-667X; MARTIN, ANDREW/0000-0003-3704-1829; Bogan,
Mike/0000-0001-9318-3333; Rocha Neves Couto Maia,
Filipe/0000-0002-2141-438X; Bozek, John/0000-0001-7486-7238;
FU Human Frontier Science Program ( N. D. L., M. J. B.); AMOS program
within the Chemical Sciences, Geosciences, and Biosciences Division of
the Office of Basic Energy Sciences, Office of Science; U. S. DOE; DOE
[DE- AC52- 07NA27344]; Max Planck Society; Hamburg Ministry of Science
and Research; Joachim Herz Stiftung; Hamburg School for Structure and
Dynamics in Infection; CBST at UC [PHY 0120999]; National Nuclear
Security Administration [DE- AC52- 07NA27344]; University of California
Laboratory [09- LR- 05- 118036- BARA]; Swedish Research Council, the
European Research Council; Knut och Alice Wallenbergs Stiftelse; DFG
FX Experiments were carried out at the LCLS, a national user facility
operated by Stanford University on behalf of the U. S. Department of
Energy ( DOE), Office of Basic Energy Sciences. We acknowledge support
by the following: Human Frontier Science Program ( N. D. L., M. J. B.);
AMOS program within the Chemical Sciences, Geosciences, and Biosciences
Division of the Office of Basic Energy Sciences, Office of Science, U.
S. DOE ( N. D. L., R. G. S., C. Y. H., D. S., and M. J. B.); DOE through
the SLAC Laboratory Directed Research and Development Program and by
Lawrence Livermore National Laboratory under Contract DE- AC52-
07NA27344; the Max Planck Society for funding the development and
operation of the CAMP instrument within the ASG at CFEL; the Hamburg
Ministry of Science and Research and Joachim Herz Stiftung as part of
the Hamburg Initiative for Excellence in Research ( LEXI); the Hamburg
School for Structure and Dynamics in Infection; CBST at UC under
Cooperative Agreement No. PHY 0120999. Lawrence Livermore National
Laboratory ( LLNL) is operated by Lawrence Livermore National Security (
LLC) for the U. S. DOE, National Nuclear Security Administration under
Contract DE- AC52- 07NA27344. Work by LLNL has been supported, in part,
by University of California Laboratory Fee grant 09- LR- 05- 118036-
BARA. We thank the staff of the LCLS for their support in carrying out
these experiments. We also acknowledge support from the Swedish Research
Council, the European Research Council, Knut och Alice Wallenbergs
Stiftelse, and the DFG Cluster of Excellence at the Munich Centre for
Advanced Photonics. The Max Planck Advanced Study Group at CFEL
acknowledges technical support by R. Andritschke, K. G " artner, O. H "
alker, S. Herrmann, A. H " omke, Ch. Kaiser, K.- U. K " uhnel, W.
Leitenberger, D. Miessner, D. Pietschner, M. Porro, R. Richter, G.
Schaller, C. Schmidt, F. Schopper, C.- D. Schr " oter, Ch. Thamm, A.
Walenta, A. Ziegler, and H. Gorke. N. D. Loh would like to thank G. J.
Williams for his insightful suggestions and comments.
NR 18
TC 1
Z9 1
U1 0
U2 11
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 850403
DI 10.1117/12.930075
PG 10
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900002
ER
PT S
AU Roseker, W
Lee, S
Walther, M
Schulte-Schrepping, H
Franz, H
Gray, A
Sikorski, M
Fuoss, PH
Stephenson, GB
Robert, A
Grubel, G
AF Roseker, Wojciech
Lee, Sooheyong
Walther, Michael
Schulte-Schrepping, Horst
Franz, Hermann
Gray, Amber
Sikorski, Marcin
Fuoss, Paul H.
Stephenson, G. Brian
Robert, Aymeric
Gruebel, Gerhard
BE Moeller, SP
Yabashi, M
HauRiege, SP
TI Hard x-ray delay line for x-ray photon correlation spectroscopy and
jitter-free pump-probe experiments at LCLS
SO X-RAY FREE-ELECTRON LASERS: BEAM DIAGNOSTICS, BEAMLINE INSTRUMENTATION,
AND APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on X-Ray Free-Electron Lasers - Beam Diagnostics, Beamline
Instrumentation, and Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE delay line; X-ray optics; XPCS; FEL; coherence
ID FREE-ELECTRON LASER; SPECKLE
AB A hard X-ray delay line device capable of splitting single FEL X-ray pulses into two adjustable fractions and recombining them with the goal of performing X-ray Photon Correlation Spectroscopy and pump - probe type studies was designed. The performance of the device has been verified at the XPP and XCS instruments of LCLS. The measured throughput of the device at 7.9 keV is 3.6%. The coherence properties of the LCLS beam passing through the delay line were investigated by analyzing speckle patterns produced by single LCLS pulses. A high speckle contrast of 0.69 was found, indicating the feasibility of performing coherence based experiments with the delay line.
C1 [Roseker, Wojciech; Walther, Michael; Schulte-Schrepping, Horst; Franz, Hermann; Gruebel, Gerhard] DESY, Notkestr 85, D-22607 Hamburg, Germany.
[Lee, Sooheyong] Korea Res Inst Stand & Sci, Taejon 305340, South Korea.
[Gray, Amber; Sikorski, Marcin; Robert, Aymeric] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[Fuoss, Paul H.; Stephenson, G. Brian] Argonne Natl Lab, Div Sci Mat, Argonne, IL 60439 USA.
[Stephenson, G. Brian] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
RP Roseker, W (reprint author), DESY, Notkestr 85, D-22607 Hamburg, Germany.
EM wojciech.roseker@desy.de
RI Gray, Amber/B-5992-2015
OI Gray, Amber/0000-0002-6557-297X
FU German Federal Ministry for Education and Research [BMBF- 05K10KTB]; DFG
[SFB925]; Excellence cluster Frontiers in Quantum Photon Science; U. S.
Department of Energy, Office of Basic Energy Sciences, Division of
Materials Sciences and Engineering
FX We would like to gratefully acknowledge support from German Federal
Ministry for Education and Research under Contract No. BMBF- 05K10KTB;
DFG within SFB925 and the Excellence cluster Frontiers in Quantum Photon
Science. Portions of this research were carried out at the Linac
Coherent Light Source ( LCLS) at the SLAC National Accelerator
Laboratory. LCLS is an Office of Science User Facility operated for the
U. S. Department of Energy Office of Science by Stanford University. P.
H. F. and G. B. S. were supported by the U. S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering.
NR 15
TC 6
Z9 6
U1 1
U2 12
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9221-0
J9 PROC SPIE
PY 2012
VL 8504
AR 85040I
DI 10.1117/12.929759
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCX56
UT WOS:000311837900012
ER
PT S
AU Quinn, H
Graham, P
Morgan, K
Baker, Z
Caffrey, M
Smith, D
Bell, R
AF Quinn, Heather
Graham, Paul
Morgan, Keith
Baker, Zachary
Caffrey, Michael
Smith, Dave
Bell, Randy
GP IEEE
TI On-Orbit Results for the Xilinx Virtex-4 FPGA
SO 2012 IEEE RADIATION EFFECTS DATA WORKSHOP (REDW)
SE IEEE Radiation Effects Data Workshop
LA English
DT Proceedings Paper
CT IEEE Radiation Effects Data Workshop (REDW) is Part of the Nuclear and
Space Radiation Effects Conference (NSREC)
CY JUL 16-20, 2012
CL Miami, FL
SP IEEE Nucl & Plasma Sci Soc, Inst Elect & Elect Engineers Inc (IEEE)
AB This paper provides information regarding the use of the Xilinx Virtex-4 field-programmable gate array in a spacecraft deployed to low-earth orbit. The results are compared to pre-deployment accelerated and fault-injection testing.
C1 [Quinn, Heather; Graham, Paul; Morgan, Keith; Baker, Zachary; Caffrey, Michael; Smith, Dave] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
[Bell, Randy] Dept Energy, Washington, DC 20585 USA.
RP Quinn, H (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM hquinn@lanl.gov
FU Los Alamos National Security, LLC (LANS); Los Alamos National Laboratory
[DE-AC52-06NA25396]; U.S. Department of Energy; U.S. Government
FX This work has been authored by an employee of the Los Alamos National
Security, LLC (LANS), operator of the Los Alamos National Laboratory
under Contract No. DE-AC52-06NA25396 with the U.S. Department of Energy.
The U.S. Government has rights to use, reproduce, and distribute this
information. The public may copy and use this information without
charge, provided that this Notice and any statement of authorship are
reproduced on all copies. Neither the Government nor LANS makes any
warranty, express or implied, or assumes any liability or responsibility
for the use of this information. The Los Alamos National Laboratory
strongly supports academic freedom and a researcher's right to publish;
therefore, the Laboratory as an institution does not endorse the
viewpoint of a publication or guarantee its technical correctness. This
paper is published under LAUR-12-22759.
NR 10
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 2154-0519
BN 978-1-4673-2732-9; 978-1-4673-2731-2
J9 IEEE RADIAT EFFECTS
PY 2012
PG 8
WC Engineering, Electrical & Electronic; Physics, Fluids & Plasmas;
Physics, Nuclear
SC Engineering; Physics
GA BDA37
UT WOS:000312293800009
ER
PT J
AU Wright, JL
McQueen, M
Wellman, L
AF Wright, Jason L.
McQueen, Miles
Wellman, Lawrence
GP IEEE
TI Analyses Of Two End-User Software Vulnerability Exposure Metrics
SO 2012 SEVENTH INTERNATIONAL CONFERENCE ON AVAILABILITY, RELIABILITY AND
SECURITY (ARES)
LA English
DT Proceedings Paper
CT 7th International Conference on Availability, Reliability and Security
(ARES)
CY AUG 20-24, 2012
CL Prague, CZECH REPUBLIC
SP Soc ICT Knowledge Transfer, Secure
DE security; metrics; experimental security
ID SECURITY
AB The risk due to software vulnerabilities will not be completely resolved in the near future. Instead, putting reliable vulnerability measures into the hands of end-users so that informed decisions can be made regarding the relative security exposure incurred by choosing one software package over another is of importance. To that end, we propose two new security metrics, average active vulnerabilities (AAV) and vulnerability free days (VFD). These metrics capture both the speed with which new vulnerabilities are reported to vendors and the rate at which software vendors fix them.
We then examine how the metrics are computed using currently available data sets and demonstrate their estimation in a simulation experiment using four different browsers as a case study. Finally, we discuss how the metrics may be used by the various stakeholders of software to aid usage decisions.
C1 [Wright, Jason L.; McQueen, Miles; Wellman, Lawrence] Idaho Natl Lab, Idaho Falls, ID USA.
RP Wright, JL (reprint author), Idaho Natl Lab, Idaho Falls, ID USA.
EM jlwright@ieee.org; miles.mcqueen@inl.gov; lawrence.wellman@inl.gov
OI Wright, Jason/0000-0002-6443-1681
NR 16
TC 2
Z9 2
U1 1
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
BN 978-0-7695-4775-6
PY 2012
BP 1
EP 10
DI 10.1109/ARES.2012.33
PG 10
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BCX66
UT WOS:000311858100001
ER
PT J
AU Cao, YH
Zhou, BZ
Chen, SL
Xiao, JH
Wang, XM
Gu, LH
AF Cao, Yonghui
Zhou, Benzhi
Chen, Shuanglin
Xiao, Jianghua
Wang, Xiaoming
Gu, Lianhong
GP IEEE
TI Effect of drought stress on photosynthetic properties of Illicium
lanceolatum
SO 2012 WORLD AUTOMATION CONGRESS (WAC)
LA English
DT Proceedings Paper
CT World Automation Congress (WAC)
CY JUN 24-28, 2012
CL Puerto Vallarta, MEXICO
SP TSI Enterprises Inc
DE The Chinese anise; ecotypes; drought stress; photosynthetic parameters
ID GROWTH
AB Understanding the relationship between plants and water has been a major subject of research in plant physiological ecology. Illicium lanceolatum is a conventional medicinal plant species in China. No study has been done to understand the mechanism of how this species responds to water and light conditions. One year old seedlings of four ecotypes were transplanted into pots and drought stress was applied by withholding water for different time-periods. Results show that photosynthetic parameters differ significantly in these ecotypes during the drought stress and the recovery period. As the drought stress progressed, the light saturation points (LSP) and the light compensation point (LCP) declined. The maximum photosynthetic ratio (Pmax) increases initially and then decreases rapidly during the drought treatment period. The apparent photon quantum yield (AQY) increases as drought stress progressed. Significant changes in LSP, LCP, AQY and Pmax, occur between the recovery period and the pre-drought treatment condition, but the level of relative difference is affected by the ecotypes. During the recovery period, the LSP of WN, KH and LA ecotypes is higher than the pre-drought treatment condition, the LCP also recovers rapidly, and AQY also remains at a high level. These results indicate that the four ecotypes are different in the capacity to adapt to light intensity and water stress. The photosynthetic response curve also changes in response to drought stress. Therefore, I. lanceolatum requires a growing environment to provide adequate soil moisture as well as light intensity.
C1 [Cao, Yonghui; Zhou, Benzhi; Chen, Shuanglin; Xiao, Jianghua; Wang, Xiaoming] Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
[Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN USA.
RP Cao, YH (reprint author), Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
FU Science and Technology Department of Zhejiang Province; Gene Company Ltd
FX This work was supported by the project about I.lanceolatum research and
a grant from Science and Technology Department of Zhejiang Province,
China. This work was also supported by Gene Company Ltd..
NR 10
TC 0
Z9 0
U1 0
U2 1
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-4497-5
PY 2012
PG 6
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BCJ87
UT WOS:000310335802070
ER
PT J
AU Li, XJ
Zhou, BZ
Wang, XM
Cao, YH
Hong, YF
Tang, YL
Gu, LH
AF Li, Xiaojing
Zhou, Benzhi
Wang, Xiaoming
Cao, Yonghui
Hong, Yifeng
Tang, Yilin
Gu, Lianhong
GP IEEE
TI Seasonal variation of physiological indexes on resprouting of Schima
superba after the 2008 ice storm
SO 2012 WORLD AUTOMATION CONGRESS (WAC)
LA English
DT Proceedings Paper
CT World Automation Congress (WAC)
CY JUN 24-28, 2012
CL Puerto Vallarta, MEXICO
SP TSI Enterprises Inc
DE ice storm; Schima superba; resprouing; physiological indexes; seasonal
variation
ID LAND-USE; REGENERATION; FOREST; PHOTOSYNTHESIS; PERSISTENCE; EVERGREEN;
HISTORY; TREES
AB Schima superba, one of the typical components of subtropical evergreen broad-leaf forest community, suffered from 2008 ice strom. With five 400 m(2) randomly-established plots in Zhejiang of China, the status of Schima superba was classified into three patterns: uprooted, decapitated and undamaged. Leaf samples were picked up and mixed from four directions and different positions of trees for physiological indexes determination in March, May, July, September and November, respectively. The average chlorophyll (a+b) content of uprooted, decapitated and undamaged trees in the latter half of the year increased by 10.8%, 21.3% and 8.1% than that of the first half of the year, respectively. Carotenoid content showed a gradual decrease tendency in the uprooted trees and an increase tendency in the decapitated and undamaged trees. LMA showed a gradual increase tendency and their peaks all occurred in September. Nitrogen and phosphorus content of undamaged trees were highest, followed by decapitated trees, and those in uprooted trees were the lowest.
C1 [Li, Xiaojing; Zhou, Benzhi; Wang, Xiaoming; Cao, Yonghui; Hong, Yifeng; Tang, Yilin] Chinese Acad Forest, Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
[Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN USA.
RP Li, XJ (reprint author), Chinese Acad Forest, Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
FU Non-profit Industry Special Fund of State Forestry Administration of
China [201104006]; Chinese Academy of Forestry [CAFYBB2008006]
FX This study was sponsored by Non-profit Industry Special Fund of State
Forestry Administration of China(Grant 201104006) and Chinese Academy of
Forestry (Grant CAFYBB2008006).
NR 19
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-4497-5
PY 2012
PG 4
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BCJ87
UT WOS:000310335801139
ER
PT J
AU Tang, YL
Zhou, BZ
Wang, XM
Cao, YH
Li, XJ
Gu, LH
AF Tang, Yilin
Zhou, Benzhi
Wang, Xiaoming
Cao, Yonghui
Li, Xiaojing
Gu, Lianhong
GP IEEE
TI Dynamics of litterfall production of moso bamboo plantations after the
2008 ice storm
SO 2012 WORLD AUTOMATION CONGRESS (WAC)
LA English
DT Proceedings Paper
CT World Automation Congress (WAC)
CY JUN 24-28, 2012
CL Puerto Vallarta, MEXICO
SP TSI Enterprises Inc
DE ice storm; litterfall production; moso bamboo; altitude; dynamics;
Dagangshan
ID MAUNA-LOA; FORESTS; DECOMPOSITION; NORTHEAST; HAWAII
AB To assess the effects of the 2008 ice storm on litterfall production (LP) of moso bamboo (Phyllostachys pubescens) plantations, three plots were established respectively at low elevation site (350 m asl) and high elevation site (650 m asl) in June, 2008 at Mount Dagangshan, Jiangxi Province. Based on the survey during the period from June, 2008 to December, 2010, we concluded: (1) the accumulated litterfall production of moso bamboo plantations during the period of 31 monthes was estimated to be 4385.8 kg.ha, with a monthly average of 141.5 kg.ha. Litterfall production in on-year (2009) was 1.5 times of the amount in off-year (2010). Dued to the 2008 ice storm, the year of 2008 had a lower litterfall production than the year of 2010. Compared with the period between June and December of 2008, litterfall production at high and low elevation increased by 18.81% and 31.97% in the same period of 2010, respectively. (2) ANOVA analysis for independent sample (TABLE II.) showed that the difference of litterfall production between 350 m asl and 650 m asl was not significant (P>0.05). (3) There existed large fluctuation in litterfall production among different months. Generally speaking, litterfall production were relatively high during the period from April to June. And the low amount appeared in January, February and December.
C1 [Tang, Yilin; Zhou, Benzhi; Wang, Xiaoming; Cao, Yonghui; Li, Xiaojing] Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
[Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN USA.
RP Tang, YL (reprint author), Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China.
EM tungtung1102@hotmail.com
FU Non-profit Industry Special Fund of State Forestry Administration of
China [201104008]; Chinese Academy of Forestry [CAFYBB2008006]
FX This study was sponsored by Non-profit Industry Special Fund of State
Forestry Administration of China (Grant 201104008) and Chinese Academy
of Forestry (Grant CAFYBB2008006).
NR 18
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4673-4497-5
PY 2012
PG 4
WC Automation & Control Systems; Engineering, Electrical & Electronic
SC Automation & Control Systems; Engineering
GA BCJ87
UT WOS:000310335802096
ER
PT S
AU Stockli, MP
AF Stockli, Martin P.
BE Kuraica, M
Mijatovic, Z
TI Plasma-Wall Interactions in the Cesiated SNS H- Ion Source
SO 26TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED
GASES (SPIG 2012)
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 26th Summer School and International Symposium on the Physics of Ionized
Gases (SPIG)
CY AUG 27-31, 2012
CL Zrenjanin, SERBIA
SP Sci & Technol Dev Republ Serbia, Minist Educ, Prov Secretariat Sci & Technol Dev, Inst Francais Serbie, Biser Zrenjanin
ID BEAM; DESIGN
AB High-current H- ion beams are needed to drive high-power accelerators as well as to heat future fusion reactors with neutral beams. The most productive H- sources enhance the production of H- ions with caesium. Cs lowers the work functions of the metal walls, which increases the probability of ions to capture a second electron when bouncing back from the metal plasma walls. However, caesium also causes voltage break downs that can be severe and cause significant downtime. SNS has developed a frugal caesium management, which uses a single injection of similar to 4 mg of caesium to produce similar to 50 mA of H- beam without decay for up to 6 weeks. This paper presents calculations and experimental data, which suggest the persistence of the caesium enhanced H- beams are due to 1) thermally limiting the Cs emission, and 2) conditioning for high purity hydrogen plasma, which eliminates the sputtering of Cs by non-hydrogen ions, and 3) hydrogen ions being too light to sputter Cs.
C1 Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37830 USA.
RP Stockli, MP (reprint author), Oak Ridge Natl Lab, Spallat Neutron Source, Oak Ridge, TN 37830 USA.
EM stockli@ornl.gov
NR 20
TC 2
Z9 2
U1 1
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 399
AR 012001
DI 10.1088/1742-6596/399/1/012001
PG 10
WC Physics, Fluids & Plasmas; Physics, Multidisciplinary
SC Physics
GA BDA07
UT WOS:000312261700001
ER
PT S
AU Baker, KL
AF Baker, Kevin L.
BE Khounsary, AM
ODell, SL
Bifano, TG
TI X-Ray Wavefront Characterization with Two-Dimensional Wavefront Sensors:
Shearing Interferometers and Hartmann Wavefront Sensors
SO ADAPTIVE X-RAY OPTICS II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive X-Ray Optics II
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Metrology; X-rays; shearing interferometer; Hartmann sensor; wave-front
sensing
ID ELECTRON-DENSITY CHARACTERIZATION; PLASMAS
AB Phase reconstructions from a two-dimensional shearing interferometer, based on two orthogonal phase gratings in a single plane, and a Hartmann sensor are compared. Design alternatives for both wavefront sensors are given and simulated performance of both the two-dimensional x-ray shearing interferometer and Hartmann wavefront sensor are presented for two different phase profiles. The first comparison is an evaluation of metrology on DT ice layers in an inertial confinement fusion capsule and the second comparison is a high frequency "asterisk" phase profile. Both of these sensors can measure the two-dimensional wave-front gradient of an x-ray beam, as well as the x-ray absorption. These instruments measure the two-dimensional wave-front gradient in a single measurement and the wavefront sensor is located in a single plane making them much less sensitive to vibrations than most other wavefront sensing techniques.
C1 Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Baker, KL (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave,L-481, Livermore, CA 94550 USA.
NR 25
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9220-3
J9 PROC SPIE
PY 2012
VL 8503
AR 85030G
DI 10.1117/12.945986
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ42
UT WOS:000312165200014
ER
PT S
AU Hart, M
Codona, J
Codona, R
Ammons, SM
Macintosh, BA
AF Hart, Michael
Codona, Johanan
Codona, Robert
Ammons, S. Mark
Macintosh, Bruce A.
BE Khounsary, AM
ODell, SL
Bifano, TG
TI Conceptual design of a grazing incidence X-ray deformable mirror using
voice-coil actuators
SO ADAPTIVE X-RAY OPTICS II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive X-Ray Optics II
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Adaptive optics; deformable mirrors; X-ray optics
AB High-energy beams of X-rays used in studies of molecular structure have imperfect wavefront quality. Improved point-spread functions can in principle be made by adjustment of a deformable mirror (DM) in the beam train. Conventional DMs are unsuitable because they are not intended for use at the necessary grazing incidence angles, and the optical surface is not sufficiently stable. We describe the conceptual design for a new DM that addresses the requirements of this application. Our design draws on successful strategies employed in the adaptive secondary mirrors at the MMT and LBT telescopes, including the use of voice-coil actuators with collocated capacitive position sensors.
C1 [Hart, Michael; Codona, Johanan; Codona, Robert] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
[Ammons, S. Mark; Macintosh, Bruce A.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Hart, M (reprint author), Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA.
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU U. S. Department of Energy by Lawrence Livermore National Laboratory
[DE- AC52- 07NA27344]; LLNL LDRD office [11- ERD- 015.]; University of
Arizona; Lawrence Livermore National Security [B597543]
FX This work was performed under the auspices of the U. S. Department of
Energy by Lawrence Livermore National Laboratory under Contract DE-
AC52- 07NA27344. This project was enabled by the LLNL LDRD office
through program 11- ERD- 015. Work at the University of Arizona was
supported by Lawrence Livermore National Security under contract
B597543.
NR 8
TC 0
Z9 0
U1 1
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9220-3
J9 PROC SPIE
PY 2012
VL 8503
AR 850304
DI 10.1117/12.939997
PG 12
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ42
UT WOS:000312165200004
ER
PT S
AU Pardini, T
Poyneer, LA
Plinta, A
Cavaco, JL
Pivovaroff, MJ
AF Pardini, Tommaso
Poyneer, Lisa A.
Plinta, Audrey
Cavaco, Jeffrey L.
Pivovaroff, Michael J.
BE Khounsary, AM
ODell, SL
Bifano, TG
TI Simulating Wavefront Correction via Deformable Mirrors at X-Ray
Beamlines
SO ADAPTIVE X-RAY OPTICS II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive X-Ray Optics II
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Adaptive x-ray optics; deformable mirrors; wavefront correction;
wavefront simulations
ID FREE-ELECTRON LASER
AB Deformable mirrors (DMs) have been successfully used in astronomical adaptive optics at visible and near-infrared wavelengths,greatly reducing atmospheric-induced aberrations. Building up on the extensive techniques and methods developed for these applications, we propose to extend this capability to the soft and hard x-ray regime in order to take full advantage of the beam quality characteristic of new facilities such as the National Synchrotron Light Source (NSLS-II), and the Linac Coherent Light Source (LCLS). Achieving this goal challenges both current mirror manufacturing techniques and wavefront propagation modeling. Lawrence Livermore National Laboratory (LLNL), in collaboration with Northrop Grumman AOA Xinetics Inc., is currently developing an x-ray deformable mirror to correct for wave-front aberrations introduced along the beam path of a typical x-ray beamline. To model the expected performance of such a mirror, we have developed a simulation based on the wavefront propagation code PROPER. We will present the current implementation of the software, which models actuation of a deformable mirror and evaluates its effect on wavefront correction.
C1 [Pardini, Tommaso; Poyneer, Lisa A.; Pivovaroff, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Plinta, Audrey; Cavaco, Jeffrey L.] Northrop Grumman, AOA Xinet INC, Devens, MA 01434 USA.
RP Pardini, T (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM pardini2@llnl.gov
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[E-AC 52 07 NA 27344]; Document Release [LLNL-PROC-568453]
FX This work performed under the auspices of the U.S. Department of Energy
by Lawrence Livermore National Laboratory under Contract DE-AC 52 07 NA
27344. Document Release Number LLNL-PROC-568453.
NR 11
TC 1
Z9 1
U1 2
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9220-3
J9 PROC SPIE
PY 2012
VL 8503
AR 85030H
DI 10.1117/12.947739
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ42
UT WOS:000312165200015
ER
PT S
AU Poyneer, LA
Bauman, B
Macintosh, B
AF Poyneer, Lisa A.
Bauman, Brian
Macintosh, Bruce
BE Khounsary, AM
ODell, SL
Bifano, TG
TI Aliasing in a Hartmann wavefront sensor at x-ray wavelengths
SO ADAPTIVE X-RAY OPTICS II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Adaptive X-Ray Optics II
CY AUG 14, 2012
CL San Diego, CA
SP SPIE
DE Adaptive optics; Hartmann sensor; X-ray optics; aliasing; wavefront
sensing
ID FOURIER-TRANSFORM
AB The Hartmann Sensor is a simple and well-established method to interrogate wavefront quality. Recently the Hartmann sensor has been used at very short wavelengths, including the extreme UV. Here we consider the Hartmann sensor and its ability to measure the wavefront of an x-ray beam. We use both analytic methods and a wave-optics, Fresnel-diffraction simulation. The Hartmann sensor samples the wavefront, which means that it is susceptible to aliasing (the non-linear phenomenon where high-spatial frequency components are incorrectly measured as low-spatial frequency components). Our analysis shows that aliasing is more severe in the Hartmann sensor than in the corresponding (optical) Shack-Hartmann. Aliasing worsens as Hartmann hole size shrinks. The wave-optics simulations show that for reasonable optics-polishing errors and Hartmann mask design, aliasing errors can be of the same magnitude as the phase that is to be measured.
C1 [Poyneer, Lisa A.; Bauman, Brian; Macintosh, Bruce] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Poyneer, LA (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM poyneer1@llnl.gov
NR 15
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9220-3
J9 PROC SPIE
PY 2012
VL 8503
AR 85030I
DI 10.1117/12.946116
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ42
UT WOS:000312165200016
ER
PT S
AU Artemiev, NA
Chow, KP
La Civita, D
Merthe, DJ
Chuang, YD
McKinney, WR
Yashchuk, VV
AF Artemiev, Nikolay A.
Chow, Ken P.
La Civita, Daniele
Merthe, Daniel J.
Chuang, Yi-De
McKinney, Wayne R.
Yashchuk, Valeriy V.
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Optimal setting of bendable optics based on FEA calculations
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE x-ray optics; Kirkpatrick-Baez; bendable mirrors; characteristic
function; regression analysis; long trace profiler; metrology of x-ray
optics; Finite Element Analysis; FEA
ID X-RAY MIRRORS; DESIGN
AB Recently, a technique for optimal tuning and calibration of bendable x-ray optics using surface slope data obtained with a slope measuring long trace profiler (LTP) was developed at the Advanced Light Source (ALS) optical metrology laboratory (OML) [Opt. Eng. 48(8), 083601 (2009)]. In this technique, slope distributions measured at different settings of the bending couples at each end of a flat substrate are used to construct bender characteristic functions. Using regression analysis with the experimental characteristic functions, optimal settings of the benders that best approximate the desired shape in slope are determined. In this work, we describe a method for finding a bender's characteristic functions based on Finite Element Analysis (FEA) of a complete mirror assembly. The accuracy of the characteristic functions found by simulation is verified by cross comparison with experimental characteristic functions for a long (450 mm) highly curved bendable mirror. The mirror has a sagittally shaped substrate developed for the ALS MERLIN beamline 4.3.0, with a total slope variation 15 mrad. Calculating FEA characteristic functions in the design stage allowed better understanding of the design of the bender's adjustment mechanism. By calculating FEA characteristic functions a priori, we significantly decrease the time needed in the OML for tuning the mirror. Because the calculated characteristic functions are free of the errors inherent to measurements made in the lab, the tuning is even more accurate.
C1 [Artemiev, Nikolay A.; Chow, Ken P.; Merthe, Daniel J.; Chuang, Yi-De; McKinney, Wayne R.; Yashchuk, Valeriy V.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
[La Civita, Daniele] European XFEL, D-22765 Hamburg, Germany.
RP Artemiev, NA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, 1 Cyclotron Rd, Berkeley, CA 94720 USA.
EM NArtemiev@lbl.gov
RI McKinney, Wayne/F-2027-2014
OI McKinney, Wayne/0000-0003-2586-3139
FU Office of Science, Office of Basic Energy Sciences, Material Science
Division; U. S. Department of Energy at Lawrence Berkeley National
Laboratory [DE- AC02- 05CH11231]
FX The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, Material Science Division, of
the U. S. Department of Energy under Contract No. DE- AC02- 05CH11231 at
Lawrence Berkeley National Laboratory.
NR 20
TC 1
Z9 1
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 850107
DI 10.1117/12.929098
PG 18
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300006
ER
PT S
AU Artemiev, NA
Merthe, DJ
Cocco, D
Kelez, N
McCarville, TJ
Pivovaroff, MJ
Rich, DW
Turner, JL
McKinney, WR
Yashchuk, VV
AF Artemiev, Nikolay A.
Merthe, Daniel J.
Cocco, Daniele
Kelez, Nicholas
McCarville, Thomas J.
Pivovaroff, Michael J.
Rich, David W.
Turner, James L.
McKinney, Wayne R.
Yashchuk, Valeriy V.
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Cross comparison of surface slope and height optical metrology with a
super-polished plane Si mirror
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE X-ray optics; synchrotron radiation; metrology of X-ray optics; long
trace profiler; optical interferometry; super-polished flat X-ray
mirror; optical metrology; wave-front preserving optics
AB We report on a cross-comparison of low-spatial-frequency surface slope and height metrology with a super-polished flat X-ray mirror Si substrate fabricated for the Stanford Linear Accelerator Center Linac Coherent Light Source hard X-ray mirror system HOMS-3. The substrate with overall dimensions of 450 x 30 x 50 mm(3) was specified to have a radius of curvature between 150 km and 195 km with a residual (after subtraction of the best-fit cylinder) slope variation on the level of 0.1 mu rad rms, when measured in the tangential direction over a clear aperture of 380 x 5 mm(2). Surface slope metrology with an accuracy of better than 60 nrad rms was performed with an upgraded long trace profiler LTP-II and an auto-collimator-based developmental LTP (DLTP). The instruments are available at Advanced Light Source optical metrology laboratory. Surface figure in the height domain was characterized at the Lawrence Livermore National Laboratory X-ray science and technology group with a large field-of-view ZYGO(TM) (12 in) interferometer. The error of the interferometric measurement is estimated to be approximately 0.5 nm rms. We describe in detail the experimental methods and techniques that achieved state-of-the-art metrology with the super-high quality optic under test. We also discuss the relation between surface slope and height metrology and the principle problems of their cross-comparison. We show that with some precautions cross comparison can be made reliably, providing supplemental information on surface figure quality.
C1 [Artemiev, Nikolay A.; Merthe, Daniel J.; McKinney, Wayne R.; Yashchuk, Valeriy V.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Cocco, Daniele; Kelez, Nicholas; Rich, David W.; Turner, James L.] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA.
[McCarville, Thomas J.; Pivovaroff, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Artemiev, NA (reprint author), Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM NArtemiev@lbl.gov
RI McKinney, Wayne/F-2027-2014; Pivovaroff, Michael/M-7998-2014
OI McKinney, Wayne/0000-0003-2586-3139; Pivovaroff,
Michael/0000-0001-6780-6816
FU Office of Science, Office of Basic Energy Sciences, Material Science
Division; U. S. Department of Energy at Lawrence Berkeley National
Laboratory [DE- AC02- 05CH11231]
FX The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, Material Science Division, of
the U. S. Department of Energy under Contract No. DE- AC02- 05CH11231 at
Lawrence Berkeley National Laboratory.
NR 22
TC 3
Z9 3
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 850105
DI 10.1117/12.945915
PG 11
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300004
ER
PT S
AU Gubarev, MV
Merthe, DJ
Kilaru, K
Kester, T
Eng, R
Ramsey, B
McKinney, WR
Takacs, PZ
Yashchuk, VV
AF Gubarev, Mikhail V.
Merthe, Daniel J.
Kilaru, Kiranmayee
Kester, Thomas
Eng, Ron
Ramsey, Brian
McKinney, Wayne R.
Takacs, Peter Z.
Yashchuk, Valeriy V.
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Progress of multi-beam long trace-profiler development
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE Long trace profiler; optical metrology; x-ray optics metrology;
multi-beam profiler; surface profile measurement; Grazing incidence
X-ray optics; X-ray mandrel metrology
ID MIRRORS
AB The multi-beam long trace profiler (LTP) under development at NASA's Marshall Space Flight Center[ 1] is designed to increase the efficiency of metrology of replicated X-ray optics. The traditional LTP operates on a single laser beam that scans along the test surface to detect the slope errors. While capable of exceptional surface slope accuracy, the LTP single beam scanning has slow measuring speed. As metrology constitutes a significant fraction of the time spent in optics production, an increase in the efficiency of metrology helps in decreasing the cost of fabrication of the x-ray optics and in improving their quality. Metrology efficiency can be increased by replacing the single laser beam with multiple beams that can scan a section of the test surface at a single instance. The increase in speed with such a system would be almost proportional to the number of laser beams. A collaborative feasibility study has been made and specifications were fixed for a multi-beam long trace profiler. The progress made in the development of this metrology system is presented.
C1 [Gubarev, Mikhail V.; Kilaru, Kiranmayee; Kester, Thomas; Eng, Ron; Ramsey, Brian] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
[Merthe, Daniel J.; McKinney, Wayne R.; Yashchuk, Valeriy V.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Takacs, Peter Z.] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Gubarev, MV (reprint author), NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35812 USA.
EM Mikhail.V.Gubarev@nasa.gov
RI McKinney, Wayne/F-2027-2014
OI McKinney, Wayne/0000-0003-2586-3139
FU MSFC's technology investment program; LLC with the U. S. Department of
Energy [DE- AC02- 98CH10886]; U. S. Department of Energy; Office of
Science, Office of Basic Energy Sciences, Material Science Division; U.
S. Department of Energy at Lawrence Berkeley National Laboratory [DE-
AC02- 05CH11231]; United States Government
FX We would like to acknowledge the partial funding available for this work
from MSFC's technology investment program. Also, acknowledgements to
Lawrence Berkeley National Laboratory for providing the LTP control
software code in order to speed up the development process. This
manuscript has been authored, in part, by Brookhaven Science Associates,
LLC under Contract No. DE- AC02- 98CH10886 with the U. S. Department of
Energy. The Advanced Light Source is supported by the Director, Office
of Science, Office of Basic Energy Sciences, Material Science Division,
of the U. S. Department of Energy under Contract No. DE- AC02- 05CH11231
at Lawrence Berkeley National Laboratory.; This document was prepared as
an account of work sponsored by the United States Government. While this
document is believed to contain correct information, neither the United
States Government nor any agency thereof, nor The Regents of the
University of California, nor any of their employees, makes any
warranty, express or implied, or assumes any legal responsibility for
the accuracy, completeness, or usefulness of any information, apparatus,
product, or process disclosed, or represents that its use would not
infringe privately owned rights. Reference herein to any specific
commercial product, process, or service by its trade name, trademark,
manufacturer, or otherwise, does not necessarily constitute or imply its
endorsement, recommendation, or favoring by the United States Government
or any agency thereof, or The Regents of the University of California.
The views and opinions of authors expressed herein do not necessarily
state or reflect those of the United States Government or any agency
thereof or The Regents of the University of California.
NR 6
TC 2
Z9 2
U1 1
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 85010B
DI 10.1117/12.930056
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300010
ER
PT S
AU Marathe, S
Wojcik, MJ
Kujala, NG
Macrander, AT
Wen, HH
Liu, C
Fezzaa, K
Divan, R
Mancini, DC
Assoufid, L
AF Marathe, Shashidhara
Wojcik, Michael J.
Kujala, Naresh G.
Macrander, Albert T.
Wen, Han H.
Liu, Chian
Fezzaa, Kamel
Divan, Ralu
Mancini, Derrick C.
Assoufid, Lahsen
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Development of Grating-based Hard X-ray Talbot Interferometry for Optics
and Beam Wavefront Characterization at the Advanced Photon Source
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE Grating interferometry; Talbot effect; Metrology; Wave-front sensing;
X-ray optics
ID WHITE SYNCHROTRON-RADIATION; SHEARING INTERFEROMETER; PHASE TOMOGRAPHY;
CONTRAST
AB Here we report on the effort to develop a hard x-ray grating interferometry technique for application to hard x-ray optics and wavefront characterization at the Advanced Photon Source (APS), Argonne National Laboratory, USA. We will mention the motivation for developing an x-ray interferometer at the APS and discuss the design of the interferometer. We will also describe the efforts in fabricating 2-D gratings and a new type of grating having nanometer periods for high-energy x-ray applications. The preliminary results obtained using x-ray Talbot interferometers built at APS, using a broadband (pink) beam and a monochromatic beam demonstrate the importance of this tool as a metrology instrument for optics and beam wavefront diagnostics.
C1 [Marathe, Shashidhara; Kujala, Naresh G.; Macrander, Albert T.; Liu, Chian; Fezzaa, Kamel; Assoufid, Lahsen] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
[Wojcik, Michael J.; Mancini, Derrick C.] Ctr Nanoscale Mat, Argonne Natl Lab, Argonne, IL 60439 USA.
[Wen, Han H.] NHLBI Natl Inst Hlth, Bethesda, MD 20892 USA.
RP Marathe, S (reprint author), Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA.
FU U. S. DOE [DE- AC02- 06CH11357]
FX Use of the Advanced Photon Source and Center for Nanoscale Materials,
Office of Science User Facilities operated for the U.S. Department of
Energy (DOE) Office of Science by Argonne National Laboratory, was
supported by the U.S. DOE under Contract No. DE- AC02- 06CH11357.
NR 14
TC 0
Z9 0
U1 1
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 85010J
DI 10.1117/12.974896
PG 7
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300015
ER
PT S
AU Martinez-Galarce, D
Soufli, R
Windt, DL
Bruner, M
Gullikson, E
Khatri, S
Spiller, E
Robinson, J
Baker, S
Prast, E
AF Martinez-Galarce, Dennis
Soufli, Regina
Windt, David L.
Bruner, Marilyn
Gullikson, Eric
Khatri, Shayna
Spiller, Eberhard
Robinson, Jeff
Baker, Sherry
Prast, Evan
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Microroughness measurements and EUV calibration of the Solar Ultraviolet
Imager multilayer-coated mirrors
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE SUVI; EUV solar physics; EUV optics; multilayer optics; PSD of EUV
optics; EUV optics surface scatter
ID TELESCOPE; IRRADIANCE; MISSION; REGION; CORONA
AB The Solar Ultraviolet Imager (SUVI) is one of several instruments that will fly on board the next generation of Geostationary Operational Environmental Satellites (GOES) -R and -S platforms, as part of NOAA's space weather monitoring fleet. SUVI is a Generalized Cassegrain telescope that employs multilayer-coated optics that operate in six extreme ultraviolet (EUV) narrow bandpasses centered at 93.9, 131.2, 171.1, 195.1, 284.2 and 303.8 angstrom. Once operational, over the mission lifetime expected to last up to 10 years, SUVI will record full disk, EUV spectroheliograms every few minutes, where this data will be used to better understand the effects of solar produced EUV radiation on Earth and the near-Earth environment. The material presented herein will touch upon general aspects of the SUVI optical design, as well as the fabrication, super polishing and metrology of the fabricated mirrors, including measured EUV spectral performance.
C1 [Martinez-Galarce, Dennis] Lockheed Martin Adv Technol Ctr, 3251 Hanover Dr, Palo Alto, CA 94305 USA.
[Soufli, Regina; Spiller, Eberhard; Robinson, Jeff; Baker, Sherry] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Windt, David L.] Reflect X ray Opt, New York, NY 10027 USA.
[Bruner, Marilyn] Bermar Sci Technol, Palo Alto, CA 94306 USA.
[Gullikson, Eric] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Khatri, Shayna] L 3 Commun IOS Tinsley, Richmond, CA 94806 USA.
[Prast, Evan] Res Elect Opt, Boulder, CO 80301 USA.
RP Martinez-Galarce, D (reprint author), Lockheed Martin Adv Technol Ctr, 3251 Hanover Dr, Palo Alto, CA 94305 USA.
FU National Oceanic and Atmospheric Administration's; National Aeronautic
and Space Adminstration's support for the SUVI program, under NASA
[NNG07HW20C]; U. S. Department of Energy by Lawrence Livermore National
Laboratory [DE- AC52- 07NA27344]; University of California Lawrence
Berkeley National Laboratory [DE- AC03- 76F00098]; Office of Science,
Office of Basic Energy Sciences; U. S. Department of Energy [DE- AC02-
05CH11231]
FX We wish to thank the National Oceanic and Atmospheric Administration's
and the National Aeronautic and Space Adminstration's support for the
SUVI program, under NASA contract NNG07HW20C. This work was also, in
part, performed under the auspices of the U. S. Department of Energy by
Lawrence Livermore National Laboratory under Contract No. DE- AC52-
07NA27344, and by the University of California Lawrence Berkeley
National Laboratory under Contract No. DE- AC03- 76F00098. The Advanced
Light Source is supported by the Director, Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy under Contract
No. DE- AC02- 05CH11231.
NR 22
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 85010I
DI 10.1117/12.953571
PG 19
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300014
ER
PT S
AU McKinney, WR
Yashchuk, VV
Merthe, DJ
Artemiev, NA
Goldberg, K
AF McKinney, Wayne R.
Yashchuk, Valeriy V.
Merthe, Daniel J.
Artemiev, Nikolay A.
Goldberg, Kenneth
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Ex situ tuning of bendable x-ray mirrors for optimal beamline
performance
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE bendable mirrors; x-rays; x-ray optics; synchrotron radiation;
synchrotron beamline; Kirkpatrick-Baez
AB We extend analytical and numerical methods recently developed at the Advanced Light Source (ALS) optical metrology laboratory (OML) for optimal tuning and calibration of bendable x-ray optics based on ex situ measurements with surface slope profilers [Opt. Eng. 48(8), 083601 (2009); Proc. SPIE 8141, 8141-19 (2011)]. We minimize the rms variation of residual slope deviations from ideal surface figure. Previously, our adjustment assumed the deviations were weighted equally across the optic. In this work, we analyze the case when the mirror length is significant with respect to the imaging conjugate. This corresponds, for example, to high de-magnification by bendable Kirkpatrick Baez mirror pairs, used near the ends of synchrotron and free electron laser beamlines for micro-and nano-focusing that often results in a very short mirror to image distance, of the same order of magnitude as the mirror's length. In this case, contributions to focal distortion of residual errors of mirror surface figure (appearing due to mechanical alignment tolerances, sagittal shaping errors, and the limited number of adjustable parameters inherent in a two-couple bender) strongly depend on position across the optic. Specifically, the downstream deviations from exact shape should be weighted less because the rays have a shorter path to travel to the image. Here, we derive an analytical expression for the weighting function and present a mathematical background for the bending adjustment procedure for optimization of the mirror's beamline performance. The efficacy of the optimization is demonstrated for a short-focus mirror used for diffraction limited focusing at ALS beamline 12.3.2.
C1 [McKinney, Wayne R.; Yashchuk, Valeriy V.; Merthe, Daniel J.; Artemiev, Nikolay A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
[Goldberg, Kenneth] Lawrence Berkeley Natl Lab, Ctr X Ray Optic, Berkeley, CA 94720 USA.
RP McKinney, WR (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
EM wrmckinney@lbl.gov
RI McKinney, Wayne/F-2027-2014
OI McKinney, Wayne/0000-0003-2586-3139
FU Office of Science, Office of Basic Energy Sciences, Material Science
Division; U. S. Department of Energy and by the DOE Laboratory Directed
Research and Development Program at Lawrence Berkeley National
Laboratory [DE- AC02- 05CH11231]
FX The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, Material Science Division, of
the U. S. Department of Energy and by the DOE Laboratory Directed
Research and Development Program under Contract No. DE- AC02- 05CH11231
at Lawrence Berkeley National Laboratory.
NR 9
TC 3
Z9 3
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 850109
DI 10.1117/12.930156
PG 8
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300008
ER
PT S
AU Merthe, DJ
Yashchuk, VV
Goldberg, KA
Kunz, M
Tamura, N
McKinney, WR
Artemiev, NA
Celestre, RS
Morrison, GY
Anderson, E
Smith, BV
Domning, EE
Rekawa, SB
Padmore, HA
AF Merthe, Daniel J.
Yashchuk, Valeriy V.
Goldberg, Kenneth A.
Kunz, Martin
Tamura, Nobumichi
McKinney, Wayne R.
Artemiev, Nikolay A.
Celestre, Richard S.
Morrison, Gregory Y.
Anderson, Erik
Smith, Brian V.
Domning, Edward E.
Rekawa, Senajith B.
Padmore, Howard A.
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Methodology for optimal in situ alignment and setting of bendable optics
for diffraction-limited focusing of soft x-rays
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE metrology of x-ray optics; synchrotron radiation; nano-focusing;
shearing interferometry; Hartman test; knife edge measurement
ID FOURIER-TRANSFORM METHOD; FRINGE-PATTERN ANALYSIS; RONCHI TEST;
MATHEMATICAL-THEORY; MIRRORS; INTERFEROMETRY; RECONSTRUCTION;
COMMUNICATION; CURVATURE; NM
AB We demonstrate a comprehensive and broadly applicable methodology for the optimal in situ configuration of bendable soft x-ray Kirkpatrick-Baez mirrors. The mirrors used for this application are preset at the ALS Optical Metrology Laboratory prior to beamline installation. The in situ methodology consists of a new technique for simultaneously setting the height and pitch angle of each mirror. The benders of both mirrors were then optimally tuned in order to minimize ray aberrations to a level below the diffraction-limited beam waist size of 200 nm (horizontal) x 100 nm (vertical). After applying this methodology, we measured a beam waist size of 290 nm (horizontal) x 130 nm (vertical) with 1 nm light using the Foucault knife-edge test. We also discuss the utility of using a grating-based lateral shearing interferometer with quantitative wavefront feedback for further improvement of bendable optics.
C1 [Merthe, Daniel J.; Yashchuk, Valeriy V.; Kunz, Martin; Tamura, Nobumichi; McKinney, Wayne R.; Artemiev, Nikolay A.; Celestre, Richard S.; Smith, Brian V.; Domning, Edward E.; Rekawa, Senajith B.; Padmore, Howard A.] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94270 USA.
[Goldberg, Kenneth A.] Lawrence Berkeley Natl Lab, Ctr X Ray Opt, Berkeley, CA 94270 USA.
[Morrison, Gregory Y.; Anderson, Erik] Lawrence Berkeley Natl Lab, Engn Div, Berkeley, CA 94270 USA.
RP Merthe, DJ (reprint author), Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94270 USA.
RI McKinney, Wayne/F-2027-2014
OI McKinney, Wayne/0000-0003-2586-3139
FU Office of Science, Office of Basic Energy Sciences, Material Science
Division; U. S. Department of Energy at Lawrence Berkeley National
Laboratory [DE- AC02- 05CH11231]; Laboratory Directed Research and
Development Program of Lawrence Berkeley National Laboratory
FX The Advanced Light Source is supported by the Director, Office of
Science, Office of Basic Energy Sciences, Material Science Division, of
the U. S. Department of Energy under Contract No. DE- AC02- 05CH11231 at
Lawrence Berkeley National Laboratory. This work was supported by the
Laboratory Directed Research and Development Program of Lawrence
Berkeley National Laboratory. This document was prepared as an account
of work sponsored by the United States Government. While this document
is believed to contain correct information, neither the United States
Government nor any agency thereof, nor The Regents of the University of
California, nor any of their employees make any warranty, express or
implied, or assume any legal responsibility for the accuracy,
completeness, or usefulness of any information, apparatus, product, or
process disclosed, or represent that its use would not infringe
privately owned rights. Reference herein to any specific commercial
product, process, or service by its trade name, trademark, manufacturer,
or otherwise, does not necessarily constitute or imply its endorsement,
recommendation, or favoring by the United States Government or any
agency thereof, or The Regents of the University of California. The
views and opinions of authors expressed herein do not necessarily state
or reflect those of the United States Government or any agency thereof
or The Regents of the University of California.
NR 43
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Z9 2
U1 1
U2 4
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 850108
DI 10.1117/12.930023
PG 16
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300007
ER
PT S
AU Soufli, R
Baker, SL
Gullikson, EM
McCarville, T
Robinson, JC
Martinez-Galarce, D
Fernandez-Perea, M
Pivovaroff, MJ
AF Soufli, Regina
Baker, Sherry L.
Gullikson, Eric M.
McCarville, Tom
Robinson, Jeff C.
Martinez-Galarce, Dennis
Fernandez-Perea, Monica
Pivovaroff, Michael J.
BE Assoufid, L
Takacs, PZ
Asundi, AK
TI Review of substrate materials, surface metrologies and polishing
techniques for current and future-generation EUV/x-ray optics
SO ADVANCES IN METROLOGY FOR X-RAY AND EUV OPTICS IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Advances in Metrology for X-Ray and EUV Optics IV
CY AUG 12, 2012
CL San Diego, CA
SP SPIE
DE EUV/x-ray optics; polishing; figure; roughness; glass; silicon; silicon
carbide
ID EXTREME-ULTRAVIOLET LITHOGRAPHY; POINT-DIFFRACTION INTERFEROMETER;
FREE-ELECTRON LASER; MULTILAYER OPTICS; TOOL; SCATTERING; RESOLUTION;
ACCURACY; COATINGS; MIRRORS
AB This manuscript presents a review of recent advances in EUV/x-ray substrate specification, fabrication and metrology for photolithography, synchrotron sources, free-electron laser sources, solar physics and astronomy. Highlights from ultra-low-expansion glass substrates, silicon and silicon carbide substrates are presented. Selected emerging substrate materials and fabrication technologies are also discussed.
C1 [Soufli, Regina; Baker, Sherry L.; McCarville, Tom; Robinson, Jeff C.; Fernandez-Perea, Monica; Pivovaroff, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
[Gullikson, Eric M.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Martinez-Galarce, Dennis] Lockheed Martin Adv Technol Ctr, Palo Alto, CA 94305 USA.
RP Soufli, R (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
EM regina.soufli@llnl.gov
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU U. S. Department of Energy by Lawrence Livermore National Laboratory
[DE- AC52- 07NA27344]; University of California Lawrence Berkeley
National Laboratory [DE- AC03- 76F00098]; Office of Science, Office of
Basic Energy Sciences; U. S. Department of Energy [DE- AC02- 05CH11231];
SDO EUV
FX This work was performed under the auspices of the U. S. Department of
Energy by Lawrence Livermore National Laboratory under Contract DE-
AC52- 07NA27344 and by the University of California Lawrence Berkeley
National Laboratory under Contract No. DE- AC03- 76F00098. The Advanced
Light Source is supported by the Director, Office of Science, Office of
Basic Energy Sciences, of the U. S. Department of Energy under Contract
No. DE- AC02- 05CH11231. Funding for a portion of the EUVL results
presented in this paper was provided by the EUV LLC ( through a
Cooperative Research and Development Agreement) and by Sematech. Funding
for the SDO EUV multilayer optics was provided by the Smithsonian
Astrophysical Observatory. Funding for the LCLS optics was provided by
SLAC National Accelerator Laboratory. Other funding was provided by
Lockheed Martin Corporation Internal Research and Development.
NR 49
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U1 1
U2 14
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9218-0
J9 PROC SPIE
PY 2012
VL 8501
AR 850102
DI 10.1117/12.954852
PG 9
WC Optics; Physics, Applied
SC Optics; Physics
GA BCZ43
UT WOS:000312165300001
ER
PT J
AU Danilovic, N
Subbaraman, R
Strmcnik, D
Chang, KC
Paulikas, AP
Stamenkovic, VR
Markovic, NM
AF Danilovic, N.
Subbaraman, Ram
Strmcnik, D.
Chang, Kee-Chul
Paulikas, A. P.
Stamenkovic, V. R.
Markovic, Nenad M.
TI Enhancing the Alkaline Hydrogen Evolution Reaction Activity through the
Bifunctionality of Ni(OH)2/Metal Catalysts
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE electrocatalysis; electrochemistry; hydrogen; hydrogen evolution
reaction; surface chemistry
ID SINGLE-CRYSTAL SURFACES; ACID-SOLUTIONS; ELECTRODES; OXIDATION;
ELECTROCHEMISTRY; TEMPERATURE; ELECTROLYTES; ADSORPTION; KINETICS;
TRENDS
C1 [Danilovic, N.; Subbaraman, Ram; Strmcnik, D.; Chang, Kee-Chul; Paulikas, A. P.; Stamenkovic, V. R.; Markovic, Nenad M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
RP Markovic, NM (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM nmmarkovic@anl.gov
RI Chang, Kee-Chul/O-9938-2014
OI Chang, Kee-Chul/0000-0003-1775-2148
FU Office of Science, Office of Basic Energy Sciences, Division of
Materials Science, U.S. Department of Energy [DE-AC0-06CH11357];
Chemical Sciences and Engineering Division at Argonne National
Laboratory
FX This work was supported by the Office of Science, Office of Basic Energy
Sciences, Division of Materials Science, U.S. Department of Energy,
under contract number DE-AC0-06CH11357. N.D. would like to thank the
Chemical Sciences and Engineering Division at Argonne National
Laboratory for funding.
NR 30
TC 72
Z9 72
U1 19
U2 221
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 50
BP 12495
EP 12498
DI 10.1002/anie.201204842
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 052QS
UT WOS:000312213800018
PM 23129151
ER
PT J
AU Smetana, V
Lin, QS
Pratt, DK
Kreyssig, A
Ramazanoglu, M
Corbett, JD
Goldman, AI
Miller, GJ
AF Smetana, Volodymyr
Lin, Qisheng
Pratt, Daniel K.
Kreyssig, Andreas
Ramazanoglu, Mehmet
Corbett, John D.
Goldman, Alan I.
Miller, Gordon J.
TI A Sodium-Containing Quasicrystal: Using Gold To Enhance Sodium's
Covalency in Intermetallic Compounds
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE intermetallic phases; metal-metal interactions; quasicrystals
ID BERGMAN-TYPE; PHASES; SYSTEM; APPROXIMANTS; CLUSTERS; INDIUM; SN;
DIFFRACTION; NETWORK
C1 [Smetana, Volodymyr; Lin, Qisheng; Corbett, John D.; Miller, Gordon J.] Iowa State Univ, Dept Chem, Ames Lab, US DOE, Ames, IA 50011 USA.
[Pratt, Daniel K.; Kreyssig, Andreas; Ramazanoglu, Mehmet; Goldman, Alan I.] Iowa State Univ, Dept Phys & Astron, Ames Lab, US DOE, Ames, IA 50011 USA.
RP Miller, GJ (reprint author), Iowa State Univ, Dept Chem, Ames Lab, US DOE, Ames, IA 50011 USA.
EM gmiller@iastate.edu
RI Smetana, Volodymyr/C-1340-2015;
OI Smetana, Volodymyr/0000-0003-0763-1457
FU Office of the Basic Energy Sciences, Materials Sciences Division, U. S.
Department of Energy (DOE); DOE [DE-AC02-07CH11358]; US DOE
[DE-AC02-06CH11357]
FX We are indebted to J. Jacobs for ICP-MS analyses and K. Dennis for DSC
measurements. The research was supported by the Office of the Basic
Energy Sciences, Materials Sciences Division, U. S. Department of Energy
(DOE). Ames Laboratory is operated for DOE by Iowa State University
under contract No. DE-AC02-07CH11358. Use of the Advanced Photon Source
was supported by the US DOE under Contract No. DE-AC02-06CH11357.
NR 26
TC 21
Z9 21
U1 1
U2 37
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
EI 1521-3773
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 51
BP 12699
EP 12702
DI 10.1002/anie.201207076
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 053WG
UT WOS:000312305400007
PM 23193014
ER
PT J
AU Huang, J
Buyukcakir, O
Mara, MW
Coskun, A
Dimitrijevic, NM
Barin, G
Kokhan, O
Stickrath, AB
Ruppert, R
Tiede, DM
Stoddart, JF
Sauvage, JP
Chen, LX
AF Huang, Jier
Buyukcakir, Onur
Mara, Michael W.
Coskun, Ali
Dimitrijevic, Nada M.
Barin, Gokhan
Kokhan, Oleksandr
Stickrath, Andrew B.
Ruppert, Romain
Tiede, David M.
Stoddart, J. Fraser
Sauvage, Jean-Pierre
Chen, Lin X.
TI Highly Efficient Ultrafast Electron Injection from the Singlet MLCT
Excited State of Copper(I) Diimine Complexes to TiO2 Nanoparticles
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE charge transfer; complexes; copper; nanoparticles; structural dynamics
ID SENSITIZED SOLAR-CELLS; PHOTOINDUCED STRUCTURAL-CHANGE; THIN-FILMS;
X-RAY; FEMTOSECOND FLUORESCENCE; ABSORPTION-SPECTROSCOPY; POLYPYRIDINE
COMPLEXES; TRANSIENT ABSORPTION; DYNAMICS; DYE
C1 [Huang, Jier; Dimitrijevic, Nada M.; Kokhan, Oleksandr; Stickrath, Andrew B.; Tiede, David M.; Chen, Lin X.] Chem Sci & Engn Argonne Natl Lab, Argonne, IL 60439 USA.
[Dimitrijevic, Nada M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
[Buyukcakir, Onur; Mara, Michael W.; Coskun, Ali; Barin, Gokhan; Stoddart, J. Fraser; Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA.
[Ruppert, Romain] Univ Strasbourg, Inst Chim, F-67000 Strasbourg, France.
[Sauvage, Jean-Pierre] Univ Strasbourg, Inst Sci & Ingn Supramol, F-67000 Strasbourg, France.
RP Chen, LX (reprint author), Chem Sci & Engn Argonne Natl Lab, Argonne, IL 60439 USA.
EM lchen@anl.gov
RI COSKUN, Ali/C-1045-2008; Stoddart, James /H-1518-2011; Buyukcakir,
Onur/D-6871-2015;
OI COSKUN, Ali/0000-0002-4760-1546; Buyukcakir, Onur/0000-0003-4626-8232;
Kokhan, Oleksandr/0000-0001-9867-8044
FU U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences [DE-AC02-06CH11357, DE-SC0000989, DE-AC02-06-CH11357]; NERC
(Non-Equilibrium Research Center), an Energy Frontier Research Center;
Scientific and Technological Research Council of Turkey (TUBITAK)
FX The ultrafast laser and X-ray characterization and analysis are
supported by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences, Under Contract No. DE-AC02-06CH11357. The
synthesis of the complexes is supported as part of the NERC
(Non-Equilibrium Research Center), an Energy Frontier Research Center
funded by the U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences under the Award Number DE-SC0000989. Use of the
Advanced Photon Source at Argonne National Laboratory was supported by
the U.S. Department of Energy, Office of Science, Office of Basic Energy
Sciences, under Contract No. DE-AC02-06-CH11357. The authors thank Dr.
Xiaoyi Zhang, Dr. Kristoffer Haldrup, and Megan Shelby for their
assistance in the XTA experiment, and Dr. Xiao-Min Lin for the help in
total reflection UV/Vis spectra. O.B. thanks to the Scientific and
Technological Research Council of Turkey (TUBITAK) for a fellowship
program. MLCT = metal-to-ligand charge transfer.
NR 46
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U1 0
U2 69
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
EI 1521-3773
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 51
BP 12711
EP 12715
DI 10.1002/anie.201204341
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 053WG
UT WOS:000312305400010
PM 23136096
ER
PT S
AU Shields, EA
AF Shields, Eric A.
BE Tescher, AG
TI Super-Resolution Pre-Processing of Data from Undersampled Imaging
Systems for Phase Diversity
SO APPLICATIONS OF DIGITAL IMAGE PROCESSING XXXV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Applications of Digital Image Processing XXXV
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Phase diversity; phase retrieval; super-resolution
ID RETRIEVAL; RECONSTRUCTION; ALGORITHMS; IMAGES
AB Phase diversity algorithms allow wavefront and an estimate of the scene to be reconstructed from multiple images with a known phase change between measurements. These algorithms rely on sampling requirements that are frequently not met in remote sensing imaging systems. It is demonstrated that super-resolution pre-processing of imagery from undersampled systems can effectively increase the sampling, thereby allowing application of traditional phase diversity algorithms. Experimental results are presented for both a point object and an extended scene.
C1 Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Shields, EA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM eashiel@sandia.gov
NR 15
TC 0
Z9 0
U1 2
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9216-6
J9 PROC SPIE
PY 2012
VL 8499
AR 849903
DI 10.1117/12.928854
PG 8
WC Engineering, Electrical & Electronic; Imaging Science & Photographic
Technology
SC Engineering; Imaging Science & Photographic Technology
GA BCZ51
UT WOS:000312200600002
ER
PT J
AU Shui, JL
Okasinski, JS
Zhao, D
Almer, JD
Liu, DJ
AF Shui, Jiang-Lan
Okasinski, John S.
Zhao, Dan
Almer, Jonathan D.
Liu, Di-Jia
TI Microfocused X-ray Study on Precipitate Formation in the Separator
Region of Nonaqueous Li-O2 Batteries
SO CHEMSUSCHEM
LA English
DT Article
DE electrochemistry; energy conversion; lithium; sustainable chemistry;
X-ray diffraction
ID LITHIUM-AIR BATTERIES; OXYGEN REDUCTION; ELECTROCHEMICAL PERFORMANCE;
GRAPHENE NANOSHEETS; LI/AIR BATTERIES; ELECTRODE; CATALYST; CARBON;
OXIDE; RECHARGEABILITY
AB Using a microfocused synchrotron X-ray diffraction (mu-XRD) method, we systematically investigated the distributions of insoluble lithium precipitates, which formed through electrolyte decomposition, separately in all three regions (cathode, separator, and anode) of failed batteries with a spatial resolution of 20 mu m. We found unexpectedly that there was a significantly higher concentration (almost twice as much) of precipitates in the separator than in the cathode. SEM revealed that the precipitates grew on the separator fiber surface, ultimately obstructing the pores serving as the ion-transport channel. A refurbished battery, which was composed of a spent separator from a failed battery, showed a much higher overpotential and shorter cycle life than that found in a new battery.
C1 [Shui, Jiang-Lan; Zhao, Dan; Liu, Di-Jia] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Okasinski, John S.; Almer, Jonathan D.] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Argonne, IL 60439 USA.
RP Liu, DJ (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
EM djliu@anl.gov
RI Zhao, Dan/D-5975-2011
OI Zhao, Dan/0000-0002-4427-2150
FU Office of Science, US Department of Energy [DE-AC02-06CH11357]; Argonne
National Laboratory
FX This work and the use of the Advanced Photon Source and Electron
Microscopy Center are supported by Office of Science, US Department of
Energy under contract DE-AC02-06CH11357. The financial support by the
Grand Challenge program of Argonne National Laboratory is gratefully
acknowledged.
NR 51
TC 19
Z9 19
U1 6
U2 102
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1864-5631
J9 CHEMSUSCHEM
JI ChemSusChem
PY 2012
VL 5
IS 12
BP 2421
EP 2426
DI 10.1002/cssc.201200555
PG 6
WC Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
SC Chemistry; Science & Technology - Other Topics
GA 052TB
UT WOS:000312220300018
PM 23047616
ER
PT S
AU Frogget, BC
Cata, BM
Cox, BC
DeVore, DO
Esquibel, DL
Frayer, DK
Furlanetto, MR
Holtkamp, DB
Kaufman, MI
Malone, RM
Romero, VT
AF Frogget, Brent C.
Cata, Brian M.
Cox, Brian C.
DeVore, Douglas O.
Esquibel, David L.
Frayer, Daniel K.
Furlanetto, Michael R.
Holtkamp, David B.
Kaufman, Morris I.
Malone, Robert M.
Romero, Vincent T.
BE Furlong, C
Gorecki, C
Novak, EL
TI A fisheye lens as a photonic Doppler velocimetry probe
SO INTERFEROMETRY XVI: APPLICATIONS
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Interferometry XVI - Applications
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE photonic Doppler velocimetry; PDV; fisheye lens; single-mode fiber
ID HETERODYNE TECHNIQUES
AB A new fisheye lens design is used as a miniature probe to measure the velocity distribution of an imploding surface along many lines of sight. Laser light, directed and scattered back along each beam on the surface, is Doppler shifted by the moving surface and collected into the launching fiber. The received light is mixed with reference laser light in each optical fiber in a technique called photonic Doppler velocimetry, providing a continuous time record.
An array of single-mode optical fibers sends laser light through the fisheye lens. The lens consists of an index-matching positive element, two positive doublet groups, and two negative singlet elements. The optical design minimizes beam diameters, physical size, and back reflections for excellent signal collection. The fiber array projected through the fisheye lens provides many measurement points of surface coverage over a hemisphere with very little crosstalk. The probe measures surface movement with only a small encroachment into the center of the cavity.
The fiber array is coupled to the index-matching element using index-matching gel. The array is bonded and sealed into a blast tube for ease of assembly and focusing. This configuration also allows the fiber array to be flat polished at a common object plane. In areas where increased measurement point density is desired, the fibers can be close packed. To further increase surface density coverage, smaller-diameter cladding optical fibers may be used.
C1 [Frogget, Brent C.; Cata, Brian M.; Cox, Brian C.; DeVore, Douglas O.; Esquibel, David L.; Frayer, Daniel K.; Kaufman, Morris I.; Malone, Robert M.; Romero, Vincent T.] Natl Secur Technol LLC, POB 809, Los Alamos, NM 87544 USA.
[Furlanetto, Michael R.; Holtkamp, David B.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Frogget, BC (reprint author), Natl Secur Technol LLC, POB 809, Los Alamos, NM 87544 USA.
EM froggebc@nv.doe.gov
FU National Security Technologies, LLC [DE-AC52-06NA25946]; U.S. Department
of Energy
FX This manuscript has been authored by National Security Technologies,
LLC, under Contract No. DE-AC52-06NA25946 with the U.S. Department of
Energy. The United States Government retains and the publisher, by
accepting the article for publication, acknowledges that the United
States Government retains a non-exclusive, paid-up, irrevocable,
worldwide license to publish or reproduce the published form of the
manuscript, or allow others to do so, for United States Government
purposes.
NR 10
TC 4
Z9 4
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9211-1
J9 PROC SPIE
PY 2012
VL 8494
AR 84940D
DI 10.1117/12.930195
PG 10
WC Materials Science, Characterization & Testing; Optics
SC Materials Science; Optics
GA BCZ59
UT WOS:000312211100013
ER
PT J
AU Davisson, ML
Hamilton, TF
Tompson, AFB
AF Davisson, M. Lee
Hamilton, Terry F.
Tompson, Andrew F. B.
TI Radioactive waste buried beneath Runit Dome on Enewetak Atoll, Marshall
Islands
SO INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
LA English
DT Article
DE Runit Dome; Enewetak Atoll; radioactive waste; radiological monitoring;
radionuclide migration
ID LONG-LIVED RADIONUCLIDES; ORGANIC-MATTER; HUMIC-ACID; TEST-SITE;
PLUTONIUM; CS-137; RADIOCESIUM; ADSORPTION; CONTAMINATION; GROUNDWATER
AB In the early 1970s after extensive characterisation of fallout the US Pacific Proving Grounds located at Enewetak Atoll began rehabilitation in preparation for the return of indigenous people who were relocated during the Cold War. Cleanup entailed removal and collection of similar to 545 GBq of contaminated topsoil, vegetation, and debris (concrete and metal) that was subsequently entombed within an unlined crater produced by an 18 kT surface test and capped with a concrete dome. The site is now known as the Runit Dome. Currently, the US Department of Energy conducts comprehensive radiological monitoring of people living on Enewetak Atoll, but characterisation of exposure risks posed by Runit Dome have been limited to catastrophic release scenarios and periodic atoll-wide environmental surveys. Furthermore, evidence indicates open hydraulic communication between waste and intruding ocean water, with migration pathways leading to local groundwater and circulating lagoon waters. Radionuclide migration is likely facilitated by colloids and dissolution/complexation reactions under low-pH anoxic conditions.
C1 [Davisson, M. Lee; Hamilton, Terry F.; Tompson, Andrew F. B.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Davisson, ML (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM davisson2@llnl.gov; hamilton18@llnl.gov; tompson1@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]; Office of International Health Studies at the DOE
FX We thank our partners at the Office of International Health Studies at
the DOE for funding support. Dr. William Robison provided helpful
comments on the original manuscript. This work performed under the
auspices of the U.S. Department of Energy by Lawrence Livermore National
Laboratory under Contract DE-AC52-07NA27344.
NR 50
TC 1
Z9 1
U1 2
U2 14
PU INDERSCIENCE ENTERPRISES LTD
PI GENEVA
PA WORLD TRADE CENTER BLDG, 29 ROUTE DE PRE-BOIS, CASE POSTALE 856, CH-1215
GENEVA, SWITZERLAND
SN 0957-4352
J9 INT J ENVIRON POLLUT
JI Int. J. Environ. Pollut.
PY 2012
VL 49
IS 3-4
BP 161
EP 178
DI 10.1504/IJEP.2012.050897
PG 18
WC Environmental Sciences
SC Environmental Sciences & Ecology
GA 054UY
UT WOS:000312371400002
ER
PT S
AU Meirer, F
Demenev, E
Giubertoni, D
Gennaro, S
Vanzetti, L
Pepponi, G
Bersani, M
Sahiner, MA
Steinhauser, G
Foad, MA
Woicik, JC
Mehta, A
Pianetta, P
AF Meirer, F.
Demenev, E.
Giubertoni, D.
Gennaro, S.
Vanzetti, L.
Pepponi, G.
Bersani, M.
Sahiner, M. A.
Steinhauser, G.
Foad, M. A.
Woicik, J. C.
Mehta, A.
Pianetta, P.
BE Pelaz, L
Santos, I
Duffy, R
Torregrosa, F
Bourdelle, K
TI Formation Of Arsenic Rich Silicon Oxide Under Plasma Immersion Ion
Implantation And Laser Annealing
SO ION IMPLANTATION TECHNOLOGY 2012
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT 19th International Conference on Ion Implantation Technology (IIT)
CY JUN 25-29, 2012
CL Valladolid, SPAIN
SP Adv Ion Beam Technol, Inc, Appl Mat, Inc, ATMI, Axcelis Technologies, Inc, CORE Syst, Elmet Technologies, Inc, Evans Analyt Grp LLC, Excico, High Voltage Engn Europa B V, IBS, NISSIN Ion Equipement Co Ltd, Plansee-Electrograph, Praxair, Inc, Probion Anal, SemEquip, Inc/Ceradyne, SEN Corp
DE Arsenic; Silicon; Plasma Immersion Ion Implantation; Laser Annealing;
SIMS; EXAFS; XPS
ID SHALLOW; SI
AB Samples produced by plasma immersion ion implantation of Arsenic in Silicon using a non-pulsed plasma source and subsequent laser annealing were investigated with respect to As depth distribution, oxide thickness, and As local order using SIMS, XPS, INAA and EXAFS analysis. A surface layer (similar to 10 nm), was identified as an As-rich Si oxide formed after implantation. The thickness of this layer was found to be larger for samples annealed using a low thermal budget up to a threshold where probably melting occurred. Dopant depth profile was re-distributed whereas the final oxide film of these samples showed thicknesses of a few nm. The retained As dose exhibited an apparent drastic increase. A hypothesis for the processes involved is presented based on experimental evidence.
C1 [Meirer, F.; Demenev, E.; Giubertoni, D.; Gennaro, S.; Vanzetti, L.; Pepponi, G.; Bersani, M.] Fdn Bruno Kessler, Ctr Mat & Microsyst, I-38123 Povo, Trento, Italy.
[Sahiner, M. A.] Seton Hall Univ, Dept Phys, S Orange, NJ 07079 USA.
[Steinhauser, G.] Vienna Univ Technol, Inst Atom, A-1020 Vienna, Austria.
[Foad, M. A.] Appl Mat Inc, Santa Clara, CA 95052 USA.
[Woicik, J. C.] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA.
[Mehta, A.; Pianetta, P.] Stanford Synchrotron Radiat Lightsource, SLAC, Stanford, CA 94025 USA.
RP Meirer, F (reprint author), Fdn Bruno Kessler, Ctr Mat & Microsyst, I-38123 Povo, Trento, Italy.
RI Steinhauser, Georg/O-7283-2014; Meirer, Florian/H-7642-2016;
OI Steinhauser, Georg/0000-0002-6114-5890; Meirer,
Florian/0000-0001-5581-5790; Giubertoni, Damiano/0000-0001-8197-8729;
Pepponi, Giancarlo/0000-0002-7397-1946
NR 13
TC 4
Z9 4
U1 0
U2 6
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1109-8
J9 AIP CONF PROC
PY 2012
VL 1496
BP 183
EP 188
DI 10.1063/1.4766520
PG 6
WC Engineering, Electrical & Electronic; Physics, Applied
SC Engineering; Physics
GA BCZ36
UT WOS:000312160700043
ER
PT S
AU Miller, BW
Barber, HB
Barrett, HH
Liu, ZL
Nagarkar, VV
Furenlid, LR
AF Miller, Brian W.
Barber, H. Bradford
Barrett, Harrison H.
Liu, Zhonglin
Nagarkar, Vivek V.
Furenlid, Lars R.
BE Barber, HB
Roehrig, H
TI Progress in BazookaSPECT: High-Resolution, Dynamic Scintigraphy with
Large-Area Imagers
SO MEDICAL APPLICATIONS OF RADIATION DETECTORS II
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Medical Applications of Radiation Detectors II
CY AUG 16, 2012
CL San Diego, CA
SP SPIE
DE BazookaSPECT; dynamic scintigraphy; gamma-ray imaging; small-animal
imaging; columnar scintillators
ID ULTRA-HIGH-RESOLUTION; PINHOLE
AB We present recent progress in BazookaSPECT, a high-resolution, photon-counting gamma-ray detector. It is a new class of scintillation detector that combines columnar scintillators, image intensifiers, and CCD (charge-coupled device) or CMOS (complementary metal-oxide semiconductors) sensors for high-resolution imaging. A key feature of the BazookaSPECT paradigm is the capability to easily design custom detectors in terms of the desired intrinsic detector resolution and event detection rate. This capability is possible because scintillation light is optically amplified by the image intensifier prior to being imaging onto the CCD/CMOS sensor, thereby allowing practically any consumer-grade CCD/CMOS sensor to be used for gamma-ray imaging. Recent efforts have been made to increase the detector area by incorporating fiber-optic tapers between the scintillator and image intensifier, resulting in a 16x increase in detector area. These large-area BazookaSPECT detectors can be used for full-body imaging and we present preliminary results of their use as dynamic scintigraphy imagers for mice and rats. Also, we discuss ongoing and future developments in BazookaSPECT and the improved event-detection rate capability that is achieved using Graphics Processing Units (GPUs), multi-core processors, and new high-speed, USB 3.0 CMOS cameras.
C1 [Miller, Brian W.] Pacific NW Natl Lab, Radiat Detect & Nucl Sci Grp, Natl Secur Directorate, Richland, WA 99352 USA.
RP Miller, BW (reprint author), Pacific NW Natl Lab, Radiat Detect & Nucl Sci Grp, Natl Secur Directorate, Richland, WA 99352 USA.
EM brian.miller@pnnl.gov
RI Miller, Brian/A-3710-2014
OI Miller, Brian/0000-0002-3435-8268
FU Center for Gamma-Ray Imaging; NIH [P41-EB002035]; Linus Pauling
Distinguished Postdoctoral Fellowship
FX This work is supported by the Center for Gamma-Ray Imaging, NIH Grant
P41-EB002035. Updates to BazookaSPECT acquisition software to
accommodate new USB 3.0 CMOS cameras described in this paper were
conducted under the Laboratory Directed Research and Development Program
at Pacific Northwest National Laboratory, a multiprogram national
laboratory operated by Battelle for the U.S. Department of Energy. BWM
is grateful for the support of a Linus Pauling Distinguished
Postdoctoral Fellowship at PNNL. We would also like to thank Christy
Barber for assistance with small-animal imaging experiments.
NR 26
TC 6
Z9 6
U1 2
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9225-8
J9 PROC SPIE
PY 2012
VL 8508
AR 85080F
DI 10.1117/12.966810
PG 14
WC Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BCZ44
UT WOS:000312165400010
ER
PT S
AU Gilmore, DK
Kahn, S
Hascall, P
Ku, J
O'Connor, P
Rasmussen, A
Riot, V
Singal, J
AF Gilmore, D. Kirk
Kahn, Steven
Hascall, Pat
Ku, John
O'Connor, Paul
Rasmussen, Andrew
Riot, Vincent
Singal, Jack
BE Angeli, GZ
Dierickx, P
TI The LSST Camera Instrument Model
SO MODELING, SYSTEMS ENGINEERING, AND PROJECT MANAGEMENT FOR ASTRONOMY V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Modeling, Systems Engineering, and Project Management for
Astronomy V
CY JUL 01-03, 2012
CL Amsterdam, NETHERLANDS
SP SPIE
DE LSST; telescope; camera; modeling
ID FIELD; CCD
AB The design of the Large Synoptic Survey Telescope (LSST) requires a camera system of unprecedented size and complexity. Achieving the science goals of the LSST project, through design, fabrication, integration, and operation, requires a thorough understanding of the camera performance. Essential to this effort is the camera modeling which defines the effects of a large number of potential mechanical, optical, electronic or sensor variations which can only be captured with sophisticated instrument modeling that incorporates all of the crucial parameters. This paper presents the ongoing development of LSST camera instrument modeling and details the parametric issues and attendant analysis involved with this modeling.
C1 [Gilmore, D. Kirk; Kahn, Steven; Hascall, Pat; Ku, John; Rasmussen, Andrew; Singal, Jack] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
[O'Connor, Paul] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Riot, Vincent] Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA.
RP Gilmore, DK (reprint author), SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA.
FU National Science Foundation through Governing Cooperative [0809409];
Department of Energy [DE- AC02- 76- SFO0515]
FX LSST project activities are supported in part by the National Science
Foundation through Governing Cooperative Agreement 0809409 managed by
the Association of Universities for Research in Astronomy ( AURA), and
the Department of Energy under contract DE- AC02- 76- SFO0515 with the
SLAC National Accelerator Laboratory. Additional LSST funding comes from
private donations, grants to universities, and in- kind support from
LSSTC Institutional Members.
NR 10
TC 0
Z9 0
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9150-3
J9 PROC SPIE
PY 2012
VL 8449
AR 84490W
DI 10.1117/12.926611
PG 16
WC Astronomy & Astrophysics; Computer Science, Information Systems; Optics
SC Astronomy & Astrophysics; Computer Science; Optics
GA BCZ67
UT WOS:000312226800027
ER
PT J
AU Stapp, HP
AF Stapp, Henry P.
TI Reply to a Critic: "Mind Efforts, Quantum Zeno Effect and Environmental
Decoherence"
SO NEUROQUANTOLOGY
LA English
DT Editorial Material
DE Quantum Zeno effect; mind; brain; Stapp's interactive dualism;
decoherence
AB The original Copenhagen interpretation of quantum mechanics was offered as a pragmatic methodology for making predictions about future experiences on the basis of knowledge gleaned from past experiences. It was, therefore, fundamentally about mental realities, and refrained from speaking about a more inclusive reality. Von Neumann created, later, what is called the orthodox formulation of quantum mechanics. It incorporates all of the Copenhagen-based predictions about connections between experiences into a rationally coherent conception of a dynamically integrated psychophysical reality. Von Neumann's formulation allows the same laws and concepts that are used to make predictions about atomic phenomena to account for the capacity of our mental intentions to influence our bodily actions. Danko Georgiev claims to have found logical flaws in my use of von Neumann's theory to explain this causal effectiveness of our mental intentions. The bulk of Georgiev's paper gives a detailed discussion of a system with just two base states, up and down. This is not an adequate model of the pertinent physical system, a human brain. Georgiev's attempt to relate his two-state work to the case at hand is flawed by statements such as "...in von Neumann's formulation there are no such things as minds, spirits, ghosts, or souls, ..." Von Neumann's formulation certainly does involve minds. Georgiev's choice of words seems designed to suggest that I am introducing mental qualities and assumptions that go beyond what are already parts of von Neumann's theory. I explain here why these allegations, and all his other allegations of errors, are incorrect.
C1 Lawrence Berkeley Natl Lab, Berkeley, CA USA.
RP Stapp, HP (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA USA.
EM hpstapp@lbl.gov
NR 5
TC 9
Z9 9
U1 0
U2 2
PU ANKA PUBLISHER
PI BORNOVA
PA 116-11 SOK NO.10 K 2 D 2, BORNOVA, IZMIR 35050, TURKEY
SN 1303-5150
J9 NEUROQUANTOLOGY
JI NeuroQuantology
PY 2012
VL 10
IS 4
BP 601
EP 605
PG 5
WC Neurosciences
SC Neurosciences & Neurology
GA 052PP
UT WOS:000312210700002
ER
PT S
AU Allured, R
Okajima, T
Soufli, R
Fernandez-Perea, M
Daly, RO
Marlowe, H
Griffiths, ST
Pivovaroff, MJ
Kaaret, P
AF Allured, Ryan
Okajima, Takashi
Soufli, Regina
Fernandez-Perea, Monica
Daly, Ryan O.
Marlowe, Hannah
Griffiths, Scott T.
Pivovaroff, Michael J.
Kaaret, Philip
BE Gregory, GG
Davis, AJ
TI An Examination of the Sensitivity and Systematic Error of the NASA GEMS
Bragg Reflection Polarimeter Using Monte-Carlo Simulations
SO NOVEL OPTICAL SYSTEMS DESIGN AND OPTIMIZATION XV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Novel Optical Systems Design and Optimization XV
CY AUG 15-16, 2012
CL San Diego, CA
SP SPIE
DE Polarimetry; GEMS; BRP; Bragg Reflection Polarimeter; Systematic Error;
Minimum Detectable Polarization
ID X-RAY-POLARIZATION
AB The Bragg Reflection Polarimeter (BRP) on the NASA Gravity and Extreme Magnetism Small Explorer Mission is designed to measure the linear polarization of astrophysical sources in a narrow band centered at about 500 eV. X-rays are focused by Wolter I mirrors through a 4.5 m focal length to a time projection chamber (TPC) polarimeter, sensitive between 2-10 keV. In this optical path lies the BRP multilayer reflector at a nominal 45 degree incidence angle. The reflector reflects soft X-rays to the BRP detector and transmits hard X-rays to the TPC. As the spacecraft rotates about the optical axis, the reflected count rate will vary depending on the polarization of the incident beam. However, false polarization signals may be produced due to misalignments and spacecraft pointing wobble. Monte-Carlo simulations have been carried out, showing that the false modulation is below the statistical uncertainties for the expected focal plane offsets of less than or similar to 2 mm.
C1 [Allured, Ryan; Daly, Ryan O.; Marlowe, Hannah; Griffiths, Scott T.; Kaaret, Philip] Univ Iowa, Iowa City, IA 52240 USA.
[Soufli, Regina; Fernandez-Perea, Monica; Pivovaroff, Michael J.] Lawrence Livermore Natl Lab, Livermore, CA USA.
[Okajima, Takashi] Goddard Space Flight Ctr, Greenbelt, MD USA.
RP Allured, R (reprint author), Univ Iowa, Iowa City, IA 52240 USA.
RI Pivovaroff, Michael/M-7998-2014
OI Pivovaroff, Michael/0000-0001-6780-6816
FU U.S. Department of Energy by Lawrence Liver more National Laboratory
[DE-AC5207NA27344]; University of California Lawrence Berkeley National
Laboratory [DE-AC0376F00098]; NASA [NNX08AY58G]
FX This work was performed under he auspices of the U.S. Department of
Energy by Lawrence Liver more National Laboratory under Contract No.
DE-AC5207NA27344 and by the University of California Lawrence Berkeley
National Laboratory under Contract No.DE-AC0376F00098.Ryan Allured and
Philip Kaaret acknowledge partial support from NASA grant NNX08AY58G.
NR 16
TC 0
Z9 0
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9204-3
J9 PROC SPIE
PY 2012
VL 8487
AR 848703
DI 10.1117/12.930065
PG 11
WC Optics
SC Optics
GA BCZ54
UT WOS:000312205500003
ER
PT S
AU Manuel, AM
McCarville, TJ
Seppala, LG
Klingmann, JL
Kalantar, DH
AF Manuel, Anastacia M.
McCarville, Tom J.
Seppala, Lynn G.
Klingmann, Jeff L.
Kalantar, Daniel H.
BE Sasian, J
Youngworth, RN
TI OPPOSED PORT ALIGNMENT SYSTEM (OPAS): A COMMERCIAL ASTRONOMICAL
TELESCOPE MODIFIED FOR VIEWING THE INTERIOR OF THE NIF TARGET CHAMBER
SO OPTICAL SYSTEM ALIGNMENT, TOLERANCING, AND VERIFICATION VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical System Alignment, Tolerancing, and Verification VI
CY AUG 12-13, 2012
CL San Diego, CA
SP SPIE
DE NIF; Telescope; Alignment
AB The National Ignition Facility (NIF) requires high resolution live images of regions inside the target chamber in order to align diagnostic instruments to fusion targets and to monitor target stability. To view the interior of the target chamber, we modified a commercial 11-inch Schmidt-Cassegrain telescope to develop the Opposed Port Alignment System (OPAS). There are two OPAS systems installed on the target chamber ports directly opposite the diagnostics. This paper describes the optical design, highlighting the two key modifications of the telescope. The first key modification was to reposition the Schmidt corrector plate and to uniquely mount the secondary mirror to a precision translation stage to adjust focus from 5.5 m to infinity. The stage is carefully aligned to ensure that the telescope's optical axis lies on a straight line during focus adjustments. The second key modification was a custom three element lens that flattens the field, corrects residual aberrations of the Schmidt-Cassegrain and, with a commercial 1: 1 relay lens, projects the final image plane onto a large format 50 mega-pixel camera. The OPAS modifications greatly extend the Schmidt-Cassegrain telescope's field of view, producing nearly diffraction-limited images over a flat field covering +/- 0.4 degrees. Also discussed in the paper are the alignment procedure and the hardware layout of the telescope.
C1 [Manuel, Anastacia M.; McCarville, Tom J.; Seppala, Lynn G.; Klingmann, Jeff L.; Kalantar, Daniel H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA.
RP Manuel, AM (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA.
EM manuel2@llnl.gov
NR 9
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9208-1
J9 PROC SPIE
PY 2012
VL 8491
AR 84910E
DI 10.1117/12.928726
PG 9
WC Optics
SC Optics
GA BCZ57
UT WOS:000312209900011
ER
PT S
AU Tanbakuchi, A
Smith, M
Mercier, J
Vigil, S
Embree, T
Ison, A
AF Tanbakuchi, A.
Smith, M.
Mercier, J.
Vigil, S.
Embree, T.
Ison, A.
BE Sasian, J
Youngworth, RN
TI Optical design and performance testing of an athermal SWIR gas
correlation imager
SO OPTICAL SYSTEM ALIGNMENT, TOLERANCING, AND VERIFICATION VI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Optical System Alignment, Tolerancing, and Verification VI
CY AUG 12-13, 2012
CL San Diego, CA
SP SPIE
DE gas correlation imager; athermal optical design; SWIR imager
AB Gas correlation imagers are important instruments for remotely detecting effluent emissions. However, making a functional design for field testing is non-trivial given the range of environmental conditions the system may be operated under and the required matched imaging performance for both channels. We present a dual channel 7 degree full field of view f/2.5 athermal optical design athermalized from 0 to 50 degrees C that operates in the wavelength range of 2.0 to 2.5 microns suitable for methane imaging. We present the optical design, tolerance budget, and alignment plan used for the system. Predicted and as-built performance data including interferometric and ensquared energy measurements for both imaging channels are also shown.
C1 [Tanbakuchi, A.; Smith, M.; Mercier, J.; Vigil, S.; Embree, T.; Ison, A.] Sandia Natl Labs, Albuquerque, NM 87184 USA.
RP Tanbakuchi, A (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87184 USA.
EM atanbak@sandia.gov
NR 10
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9208-1
J9 PROC SPIE
PY 2012
VL 8491
AR 84910B
DI 10.1117/12.928001
PG 13
WC Optics
SC Optics
GA BCZ57
UT WOS:000312209900008
ER
PT S
AU Kim, HJ
Kim, JW
Lee, HH
Lee, B
Kim, JJ
AF Kim, Hyo Jung
Kim, Ji Whan
Lee, Hyun Hwi
Lee, Byeondu
Kim, Jang-Joo
BE Kafafi, ZH
Brabec, CJ
Lane, PA
TI GISAXS studies of initial growth mode and nanostructure of bulk
heterojunction layers in planar type metal phthalocyanine molecules
SO ORGANIC PHOTOVOLTAICS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Organic Photovoltaics XIII Part of the Symposium on
Organic Photonics Plus Electronics at the SPIE Optics Plus Photonics
International Meeting
CY AUG 14-16, 2012
CL San Diego, CA
SP SPIE, 1-Mat Inc
DE metal pthalocyanine; OPVs; bulk heterojunction; nanostructure; GISAXS
AB ZnPc and CuPc molecules stacked similar way in the film, but showed different growth modes in thermal evaporation. The distribution of CuPc crystals did not change by the film thickness, whereas the distribution of ZnPc became random as the increase of the film thickness. The disc type nanograins of CuPc were quite regularly distributed at the initial growth regime and the regular distribution of nanograins was kept during the film growth. On the other hand, ZnPc consisted in ellipsoid shaped nanograins and the distribution of nanograins was not regular in the initial growth regime. The irregular distribution of nanograins changed to the regular mode at the later growth regime by showing structure factor in GISAXS measurement. The different initial nanograin distribution in ZnPc and CuPc was related to the different nanostructure in the mixed layer with C60 to form the bulk heterojunction.
C1 [Kim, Hyo Jung; Kim, Ji Whan; Kim, Jang-Joo] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea.
[Lee, Hyun Hwi] Ponang Accelerator Lab, Pohang 790783, South Korea.
[Lee, Byeondu] Argonne Natl Lab, Adv Photon Source, Xray Sci div, Argonne, IL 60439 USA.
RP Kim, HJ (reprint author), Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea.
EM hjkim08@snu.ac.kr
OI Kim, Jang-Joo/0000-0002-3500-7494
FU New & Renewable Energy RD program; Ministry of Knowledge Economy,
Republic of Korea [20093020010040]; Korea Science and Engineering
Foundation (NRF); Korea government (MEST) [R15-2008-006-01001-0]; Brain
Korea 21
FX GIWAXS data were successfully measured at Advanced Photon Source by help
of Dr. S. Soenke. This research was supported by New & Renewable Energy
R&D program (20093020010040) under the Ministry of Knowledge Economy,
Republic of Korea, the Korea Science and Engineering Foundation (NRF)
NCRC grant funded by the Korea government (MEST) (R15-2008-006-01001-0)
and Brain Korea 21 Project 2010.
NR 7
TC 0
Z9 0
U1 0
U2 3
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9194-7
J9 PROC SPIE
PY 2012
VL 8477
AR 84771C
DI 10.1117/12.929324
PG 3
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCZ62
UT WOS:000312215000027
ER
PT S
AU Nikiforov, MP
Darling, SB
AF Nikiforov, Maxim P.
Darling, Seth B.
BE Kafafi, ZH
Brabec, CJ
Lane, PA
TI A simple and inexpensive encapsulation route for high throughput
characterization of organic photovoltaic devices
SO ORGANIC PHOTOVOLTAICS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Organic Photovoltaics XIII Part of the Symposium on
Organic Photonics Plus Electronics at the SPIE Optics Plus Photonics
International Meeting
CY AUG 14-16, 2012
CL San Diego, CA
SP SPIE, 1-Mat Inc
ID SOLAR-CELLS; OXYGEN; MECHANISM
C1 [Nikiforov, Maxim P.; Darling, Seth B.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Nikiforov, MP (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA.
NR 13
TC 0
Z9 0
U1 0
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9194-7
J9 PROC SPIE
PY 2012
VL 8477
AR 84771J
DI 10.1117/12.930101
PG 4
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCZ62
UT WOS:000312215000033
ER
PT S
AU Tanenbaum, DM
Hermenau, M
Voroshazi, E
Lloyd, MT
Galagan, Y
Zimmermann, B
Hosel, M
Dam, HF
Jorgensen, M
Gevorgyan, S
Kudret, S
Maes, W
Lutsen, L
Vanderzande, D
Wurfel, U
Andriessen, R
Rosch, R
Hoppe, H
Lira-Cantu, M
Teran-Escobar, G
Dupuis, A
Bussiere, PO
Rivaton, A
Uzunoglu, GY
Germack, D
Andreasen, B
Madsen, MV
Norrman, K
Bundgaard, E
Krebs, FC
AF Tanenbaum, David M.
Hermenau, Martin
Voroshazi, Eszter
Lloyd, Matthew T.
Galagan, Yulia
Zimmermann, Birger
Hosel, Markus
Dam, Henrik F.
Jorgensen, Mikkel
Gevorgyan, Suren
Kudret, Suleyman
Maes, Wouter
Lutsen, Laurence
Vanderzande, Dirk
Wuerfel, Uli
Andriessen, Ronn
Roesch, Roland
Hoppe, Harald
Lira-Cantu, Monica
Teran-Escobar, Gerardo
Dupuis, Aurelie
Bussiere, Pierre-Olivier
Rivaton, Agnes
Uzunoglu, Gulsah Y.
Germack, David
Andreasen, Birgitta
Madsen, Morten V.
Norrman, Kion
Bundgaard, Eva
Krebs, Frederik C.
BE Kafafi, ZH
Brabec, CJ
Lane, PA
TI Stability and degradation of organic photovoltaics fabricated, aged, and
characterized by the ISOS 3 inter-laboratory collaboration
SO ORGANIC PHOTOVOLTAICS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Organic Photovoltaics XIII Part of the Symposium on
Organic Photonics Plus Electronics at the SPIE Optics Plus Photonics
International Meeting
CY AUG 14-16, 2012
CL San Diego, CA
SP SPIE, 1-Mat Inc
DE Organic Photovoltaics Stability; Organic Photovoltaics Degradation
Mechanisms; Organic Photovoltaics Characterization
AB Seven distinct sets (n >= 12) of state of the art organic photovoltaic devices were prepared by leading research laboratories in a collaboration planned at the Third International Summit on Organic Photovoltaic Stability (ISOS-3). All devices were shipped to DTU and characterized simultaneously up to 1830 h in accordance with established ISOS-3 protocols under three distinct illumination conditions: accelerated full sun simulation; low level indoor fluorescent lighting; and dark storage with daily measurement under full sun simulation. Three nominally identical devices were used in each experiment both to provide an assessment of the homogeneity of the samples and to distribute samples for a variety of post soaking analytical measurements at six distinct laboratories enabling comparison at various stages in the degradation of the devices. Characterization includes current-voltage curves, light beam induced current (LBIC) imaging, dark lock-in thermography (DLIT), photoluminescence (PL), electroluminescence (EL), in situ incident photon-to-electron conversion efficiency (IPCE), time of flight secondary ion mass spectrometry (TOF-SIMS), cross sectional electron microscopy (SEM), UV visible spectroscopy, fluorescence microscopy, and atomic force microscopy (AFM). Over 100 devices with more than 300 cells were used in the study. We present here design of the device sets, results both on individual devices and uniformity of device sets from the wide range of characterization methods applied at different stages of aging under the three illumination conditions. We will discuss how these data can help elucidate the degradation mechanisms as well as the benefits and challenges associated with the unprecedented size of the collaboration.
C1 [Tanenbaum, David M.; Hosel, Markus; Dam, Henrik F.; Jorgensen, Mikkel; Gevorgyan, Suren; Andreasen, Birgitta; Madsen, Morten V.; Norrman, Kion; Bundgaard, Eva; Krebs, Frederik C.] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark.
[Tanenbaum, David M.] Pomona Coll, Dept Phys & Astron, Claremont, CA 91711 USA.
[Hermenau, Martin] Tech Univ Dresden, Inst Angew Photophys, Arbeitsgrp Organ Solarzellen OSOL, D-01062 Dresden, Germany.
[Voroshazi, Eszter] IMEC, B-3000 Leuven, Belgium.
[Voroshazi, Eszter] Katholieke Univ Leuven, ESAT, B-3000 Leuven, Belgium.
[Lloyd, Matthew T.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Galagan, Yulia; Andriessen, Ronn] Holst Ctr, NL-5656 AE Eindhoven, Netherlands.
[Zimmermann, Birger; Wuerfel, Uli] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany.
[Kudret, Suleyman; Maes, Wouter; Lutsen, Laurence; Vanderzande, Dirk] Hasselt Univ, B-3590 Diepenbeek, Belgium.
[Roesch, Roland; Hoppe, Harald] Ilmenau Univ Technol, Inst Phys, D-98693 Ilmenau, Germany.
[Lira-Cantu, Monica; Teran-Escobar, Gerardo] ETSE, Lab Nanostructured Mat Photovolta Energy, CSIC, CIN2, E-08193 Bellaterra, Barcelona, Spain.
[Dupuis, Aurelie; Bussiere, Pierre-Olivier; Rivaton, Agnes] Univ Clermont Ferrand, Clermont Univ, LPMM, Clermont Ferrand, France.
[Dupuis, Aurelie; Bussiere, Pierre-Olivier; Rivaton, Agnes] CNRS, UMR6505, LPMM, F-63177 Aubiere, France.
[Uzunoglu, Gulsah Y.] TUBITAK Natl Metrol Inst UME, Photon & Elect Sensors Lab, TR-41470 Gebze, Kocaeli, Turkey.
[Germack, David] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Tanenbaum, DM (reprint author), Tech Univ Denmark, Dept Energy Convers & Storage, Frederiksborgvej 399, DK-4000 Roskilde, Denmark.
RI Vanderzande, Dirk JM/C-4757-2015; Andreasen, Birgitta/J-8101-2015; Maes,
Wouter/A-7575-2009;
OI Lira-Cantu, Monica/0000-0002-3393-7436; Jorgensen,
Mikkel/0000-0002-7729-1497; Krebs, Frederik C/0000-0003-1148-4314;
Bundgaard, Eva/0000-0003-3244-5779; Andreasen,
Birgitta/0000-0002-3778-4035; Maes, Wouter/0000-0001-7883-3393;
Gevorgyan, Suren/0000-0001-9906-5485
NR 3
TC 1
Z9 1
U1 0
U2 14
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9194-7
J9 PROC SPIE
PY 2012
VL 8477
AR 847704
DI 10.1117/12.930451
PG 9
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCZ62
UT WOS:000312215000003
ER
PT S
AU Boyd, RN
Famiano, MA
Meyer, BS
Motizuki, Y
Kajino, T
Roederer, IU
AF Boyd, R. N.
Famiano, M. A.
Meyer, B. S.
Motizuki, Y.
Kajino, T.
Roederer, I. U.
BE Kubono, S
Hayakawa, T
Kajino, T
Miyatake, H
Motobayashi, T
Nomoto, K
TI The r-Process in Metal Poor Stars and Black Hole Formation
SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT International Symposium on Origin of Matter and Evolutions of Galaxies
(OMEG)
CY NOV 14-17, 2011
CL Univ Tokyo, Ctr Nucl Study (CNS), Wako, JAPAN
SP RIKEN Nishina Ctr (RNC), Natl Astronom Observ Japan (NAO), Inst Particle & Nucl Studies, Osaka Univ, Res Ctr Nucl Phys (RCNP), Konan Univ, Fac Sci & Engn, Hokkaido Univ, Fac Sci, High Energy Accelerator Res Org (KEK)
HO Univ Tokyo, Ctr Nucl Study (CNS)
ID S-PROCESS NUCLEOSYNTHESIS; NEUTRON-CAPTURE ELEMENTS; SPECTROSCOPIC
ANALYSIS; GALAXY; SUPERNOVAE; HD-122563; WINDS; LEAD; END
AB Nucleosynthesis of heavy nuclei in metal-poor stars is generally ascribed to the r-process, as the abundance pattern in many such stars agrees with the inferred Solar r-process abundances. Nonetheless, a significant number of these stars do not share this r-process template. We suggest that many such stars have begun an r-process, but it was prevented from running to completion in more massive stars by collapse to black holes, creating a "truncated r-process", or "tr-process". The observed fraction of tr-process stars is found to be consistent with expectations from the initial mass function (IMF), and we suggest that an apparent sharp truncation observed at around mass 160 could result from a combination of collapses to black holes and the difficulty of observing the higher mass rare earths. We test the tr-process hypothesis with calculations that are terminated before all r-process trajectories have been ejected. These produce qualitative agreement with observation when both black hole collapse and observational realities are taken into account
C1 [Boyd, R. N.] Lawrence Livermore Natl Lab, L-050, Livermore, CA 94550 USA.
[Famiano, M. A.] Western Michigan Univ, Dept Phys, Joint Inst Nuclear Astrophys, Kalamazoo, MI 49008 USA.
[Meyer, B. S.] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA.
[Motizuki, Y.] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan.
[Kajino, T.] Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan.
Univ Tokyo, Grad Sch Sci, Dept Astron, Tokyo 1130033, Japan.
[Roederer, I. U.] Carnegie Inst Washington Observ, Pasadena, CA 91101 USA.
RP Boyd, RN (reprint author), Lawrence Livermore Natl Lab, L-050, Livermore, CA 94550 USA.
EM boyd11@llnl.gov; motizuki@riken.jp; kajino@nao.ac.jp
NR 25
TC 0
Z9 0
U1 0
U2 0
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1096-1
J9 AIP CONF PROC
PY 2012
VL 1484
BP 105
EP 110
DI 10.1063/1.4763381
PG 6
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BCZ35
UT WOS:000312157700018
ER
PT S
AU Smith, MS
Nesaraja, CD
Lingerfelt, EJ
Koura, H
Kondev, FG
AF Smith, Michael S.
Nesaraja, Caroline D.
Lingerfelt, Eric J.
Koura, Hiroyuki
Kondev, Filip G.
BE Kubono, S
Hayakawa, T
Kajino, T
Miyatake, H
Motobayashi, T
Nomoto, K
TI Comparison of Nuclear Mass Models at nuclearmasses.org
SO ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011
SE AIP Conference Proceedings
LA English
DT Proceedings Paper
CT International Symposium on Origin of Matter and Evolutions of Galaxies
(OMEG)
CY NOV 14-17, 2011
CL Univ Tokyo, Ctr Nucl Study (CNS), Wako, JAPAN
SP RIKEN Nishina Ctr (RNC), Natl Astronom Observ Japan (NAO), Inst Particle & Nucl Studies, Osaka Univ, Res Ctr Nucl Phys (RCNP), Konan Univ, Fac Sci & Engn, Hokkaido Univ, Fac Sci, High Energy Accelerator Res Org (KEK)
HO Univ Tokyo, Ctr Nucl Study (CNS)
DE nuclear masses; software; visualization; separation energies; nuclear
models; rp-process; r-process; superheavy elements
ID FORMULA
AB Nuclear masses are crucial in many astrophysics studies, as well as other areas of basic and applied nuclear science. There are now many different global theoretical models of nuclear masses - but choosing the best model for a given application can be challenging. The suite of codes online at nuclearmasses.org greatly facilitates the comparison of nuclear models with evaluated masses as well as the intercomparison of theoretical models. We demonstrate the utility of this suite by comparing the RMS deviations of 13 different theoretical mass models from the AME2003 evaluated masses over mass ranges appropriate for astrophysics.
C1 [Smith, Michael S.; Nesaraja, Caroline D.; Lingerfelt, Eric J.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
[Lingerfelt, Eric J.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
[Koura, Hiroyuki] Japan Atom Energy Agcy, Ibaraki 3191195, Japan.
[Kondev, Filip G.] Nucl Engn Div, Argonne Natl Lab, Argonne, IL 60439 USA.
RP Smith, MS (reprint author), Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA.
EM koura.hiroyuki@jaea.go.jp
OI Nesaraja, Caroline/0000-0001-5571-8341; Koura,
Hiroyuki/0000-0003-1057-4000
FU Office of Nuclear Physics; U. S. Department of Energy
FX Research sponsored by the Office of Nuclear Physics, U. S. Department of
Energy
NR 16
TC 0
Z9 0
U1 0
U2 2
PU AMER INST PHYSICS
PI MELVILLE
PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
SN 0094-243X
BN 978-0-7354-1096-1
J9 AIP CONF PROC
PY 2012
VL 1484
BP 421
EP 423
DI 10.1063/1.4763440
PG 3
WC Astronomy & Astrophysics
SC Astronomy & Astrophysics
GA BCZ35
UT WOS:000312157700077
ER
PT J
AU Miller, MK
AF Miller, M. K.
BE Pereloma, E
Edmonds, DV
TI Atom probe tomography for studying phase transformations in steels
SO PHASE TRANSFORMATIONS IN STEELS, VOL 2: DIFFUSIONLESS TRANSFORMATIONS,
HIGH STRENGTH STEELS, MODELLING AND ADVANCED ANALYTICAL TECHNIQUES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE atom probe tomography; three-dimensional atom probe; nucleation;
spinodal decomposition; phase separation; local electrode atom probe
ID FE-CR ALLOYS; SPINODAL DECOMPOSITION; COMPUTER-MODELS; SPECIMEN
PREPARATION; NEUTRON-IRRADIATION; LEVEL; RECONSTRUCTION; AMPLITUDE;
CHROMIUM
AB Atom probe tomography is a three-dimensional micro- or nano-characterization technique that is routinely used to visualize and quantify the microstructure of materials at the atomic level. In this chapter, an overview of the technique of atom probe tomography is presented as it pertains to phase transformation in steels. The electropolishing and focused-ion beam-based methods used to fabricate the needle-shaped specimens of steels are summarized. The typical methods, such as atom maps and isoconcentration surfaces, used to visualize the phases and other fine scale microstructural features are outlined. The common methods used to analyze and quantify the various types of phase transformations in steels, including the early stages of nucleation and spinodal decomposition, are discussed.
C1 Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
RP Miller, MK (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA.
EM millermk@ornl.gov
NR 47
TC 0
Z9 0
U1 0
U2 3
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-611-1
J9 WOODHEAD PUBL MATER
PY 2012
BP 532
EP 556
PG 25
WC Mathematics, Applied; Metallurgy & Metallurgical Engineering; Materials
Science, Characterization & Testing
SC Mathematics; Metallurgy & Metallurgical Engineering; Materials Science
GA BCW05
UT WOS:000311636400019
ER
PT S
AU Murachi, T
Tanabe, H
Park, SJ
Gullikson, E
Ogase, T
Abe, T
Hayashi, N
AF Murachi, Tetsunori
Tanabe, Hiroyoshi
Park, Seh-Jin
Gullikson, Eric
Ogase, Taichi
Abe, Tsukasa
Hayashi, Naoya
BE Kato, K
TI Direct phase-shift measurement of thin & thick absorber EUV masks
SO PHOTOMASK AND NEXT-GENERATION LITHOGRAPHY MASK TECHNOLOGY XIX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Photomask and Next-Generation Lithography Mask Technology
XIX
CY APR 17-19, 2012
CL Yokohama, JAPAN
SP PMJ Photomask Japan, BACUS, SPIE
DE EUVL multi layered mask; thin and thick absorber; phase-shift effect;
Reflectometer; LBNL
ID LIGHT
AB The measurement and extraction method of phase-shift values for thin & thick absorber Extreme Ultra-Violet (EUV) masks has been studied by both of experiments and simulations. We fabricated 4 EUV masks with different absorber thicknesses. We first estimated the phase-shift values from the absorber thicknesses of each mask and the n&k values which were derived in advance by other experiments. This method is indirect and may contain plate-by-plate errors. In order to extract the phase-shift values directly, we developed a phase-shift measurement method based on scatterometry. We measured the reflectivity of the open and dark area of the 4 masks by using the EUV reflectometer at Lawrence Berkeley National Laboratory (LBNL). We also measured the diffracted light intensities of grating pattern. The phase-shift values were derived from these data assuming an interference of reflected and diffracted lights. We calibrated the method by including the shadowing effect of 6 degree incident angle, and adding the information on the measured mask patterns. The extraction results of phase-shift values by this method agreed well within the error bar. The absorber thickness having 180 degree phase-shift, which works as an embedded attenuated phase-shifting mask, could be somewhere between 66 nm and 76 nm. The measurement accuracy of this method depends on the phase-shift values. The error becomes the largest at 180 degree phase-shift, and the worst one in this experiment was much larger than the proposed phase-shift measurement accuracy of +/- 2 degree ([1]). Much effort will be required to achieve this target.
C1 [Murachi, Tetsunori; Tanabe, Hiroyoshi] Intel KK, 5-6 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
[Park, Seh-Jin] Intel Corp, Santa Clara, CA 95054 USA.
[Gullikson, Eric] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Ogase, Taichi; Abe, Tsukasa; Hayashi, Naoya] Dai Nippon Printing Co Ltd, Fukuoka, Saitama 2, Japan.
RP Murachi, T (reprint author), Intel KK, 5-6 Tokodai, Tsukuba, Ibaraki 3002635, Japan.
NR 10
TC 2
Z9 2
U1 0
U2 0
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9136-7
J9 PROC SPIE
PY 2012
VL 8441
AR 84411M
DI 10.1117/12.976817
PG 10
WC Optics; Imaging Science & Photographic Technology
SC Optics; Imaging Science & Photographic Technology
GA BCZ50
UT WOS:000312199500057
ER
PT S
AU Jonsson, JC
Curcija, C
AF Jonsson, Jacob C.
Curcija, Charlie
BE Hanssen, LM
TI Inter-laboratory comparison using integrating sphere spectrophotometers
to measure reflectance and transmittance of specular, diffuse, and
light-redirecting glazing products
SO REFLECTION, SCATTERING, AND DIFFRACTION FROM SURFACES III
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reflection, Scattering, and Diffraction from Surfaces III
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Light-scattering; integrating spheres; inter-laboratory comparison
ID SCATTERING SAMPLES; SIGNAL OUTPUT; EMISSIVITY; ANGLE; GLASS
AB An inter-laboratory comparison (ILC) between glazing manufacturers that submit data to the International Glazing Database (IGDB) is carried out every four years. This time a large number of independent laboratories were included in addition to the IGBD submitters, in total over 50 boxes of samples were sent out in parallel.
Each box contained 5 specular samples, consisting of clear float glass, low-e coated glass, laminates, and an applied film on clear glass. New for the IGDB submitters were 5 diffuse samples, 2 fritted glass samples, a diffuse laminate, a light-redirecting daylighting film, and a shade fabric with an inhomogeneous pattern.
The samples were characterized by each participant in the solar optical range, 300 nm - 2500 nm, as well as the thermal infrared from 5 mu m-25 mu m. Spectral data was inspected for anomalies such as systematic absorption and non-continuous steps due to instrument design and operation.
Spectral averaged data was calculated and used to compare the results from the different laboratories. Such comparisons indicated that use of a diffuse reference for specular measurements marginally increased the measured result. For diffuse products the effects of sphere geometry and design influenced the results to a significant degree.
C1 [Jonsson, Jacob C.; Curcija, Charlie] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
RP Jonsson, JC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, 1 Cyclotron Rd,MS90-3111, Berkeley, CA 94720 USA.
EM jcjonsson@lbl.gov
NR 35
TC 1
Z9 1
U1 0
U2 13
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9212-8
J9 PROC SPIE
PY 2012
VL 8495
AR 849509
DI 10.1117/12.932104
PG 15
WC Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BCZ58
UT WOS:000312210500008
ER
PT J
AU Mahurin, SM
Hillesheim, PC
Yeary, JS
Jiang, DE
Dai, S
AF Mahurin, Shannon M.
Hillesheim, Patrick C.
Yeary, Joshua S.
Jiang, De-en
Dai, Sheng
TI High CO2 solubility, permeability and selectivity in ionic liquids with
the tetracyanoborate anion
SO RSC ADVANCES
LA English
DT Article
ID SENSITIZED SOLAR-CELLS; CO2/N-2 SEPARATION; IMIDAZOLIUM CATION;
CARBON-DIOXIDE; MEMBRANES; CAPTURE; PERFORMANCE; SOLVENTS
AB Five different ionic liquids containing the tetracyanoborate anion were synthesized and evaluated for CO2 separation performance. Measured CO2 solubility values were exceptionally high compared to analogous ionic liquids with different anions and ranged from 0.128 mol L-1 atm(-1) to 0.148 mol L-1 atm(-1). In addition, CO2 permeability and CO2/N-2 selectivity values were measured using a supported ionic liquid membrane architecture and the separations performance of the ionic liquid membranes exceeded the Robeson upper bound. These results establish the distinct potential of ionic liquids with the tetracyanoborate, [B(CN)(4)], anion for the separation of CO2.
C1 [Mahurin, Shannon M.; Hillesheim, Patrick C.; Yeary, Joshua S.; Jiang, De-en; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
[Dai, Sheng] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
RP Mahurin, SM (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
EM mahurinsm@ornl.gov; dais@ornl.gov
RI Jiang, De-en/D-9529-2011; Dai, Sheng/K-8411-2015
OI Jiang, De-en/0000-0001-5167-0731; Dai, Sheng/0000-0002-8046-3931
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, U.S. Department of Energy; Advanced Research
Projects Agency - Energy, U.S. Department of Energy
FX S.M.M, J.S.Y., D.J., and S. D. were sponsored by the Division of
Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy
Sciences, U.S. Department of Energy. P. C. H. was supported by the
Advanced Research Projects Agency - Energy, U.S. Department of Energy.
NR 43
TC 48
Z9 48
U1 4
U2 86
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 31
BP 11813
EP 11819
DI 10.1039/c2ra22342b
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051SJ
UT WOS:000312147400030
ER
PT J
AU Narayanan, M
Pan, MC
Liu, SS
Tong, S
Hong, S
Ma, BH
Balachandran, U
AF Narayanan, Manoj
Pan, Mengchun
Liu, Shanshan
Tong, Sheng
Hong, Seungbum
Ma, Beihai
Balachandran, Uthamalingam
TI Effect of stress state on the domain configuration and switching
behavior in ferroelectric thin films
SO RSC ADVANCES
LA English
DT Article
ID LEAD-ZIRCONATE-TITANATE; ELECTROMECHANICAL PROPERTIES;
ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES; CERAMICS; RELAXOR; PZT;
LA; TRANSFORMATION; CAPACITORS
AB The effect of ferroelastic coupling in ferroelectric thin films under in-plane compressive and tensile stress states was investigated under the framework of the Landau-Ginzburg-Devonshire theory coupled with microscopic examinations and characterization measurements. Piezoresponse force microscopy imaging and synchrotron studies suggested the presence of increased c-domain population in PLZT films (Pb0.92La0.08Zr0.52Ti0.48O3) under compressive stress than tensile stress. Stress-induced ferroelectric order (SFO) persisted in PLZT films at temperatures greater than the Curie temperature. The SFO was dependent on the magnitude of the stress, not the stress state, and PLZT films on nickel and silicon substrates exhibited stress-induced remanent polarization values of 8 mu C cm(-2) and 4 mu C cm(-2), respectively. Pre-stressing thin films using thermal expansion mismatch shows promise as a method to develop high-temperature piezoelectric devices and has advantages over inducing misfit strains.
C1 [Narayanan, Manoj; Liu, Shanshan; Ma, Beihai; Balachandran, Uthamalingam] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA.
[Pan, Mengchun; Hong, Seungbum] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Tong, Sheng] Univ Cincinnati, Coll Engn & Appl Sci, Cincinnati, OH 45221 USA.
[Hong, Seungbum] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Narayanan, M (reprint author), Argonne Natl Lab, Div Energy Syst, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM mnarayanan@anl.gov; hong@anl.gov
RI Tong, Sheng/A-2129-2011; Liu, Shanshan/A-6143-2012; Hong,
Seungbum/B-7708-2009; Ma, Beihai/I-1674-2013
OI Tong, Sheng/0000-0003-0355-7368; Hong, Seungbum/0000-0002-2667-1983; Ma,
Beihai/0000-0003-3557-2773
FU U. S. Department of Energy, Vehicle Technologies Program
[DE-AC02-06CH11357]; Office of Science, Office of Basic Energy Sciences
[DE-AC02-06CH11357]
FX This work was supported by the U. S. Department of Energy, Vehicle
Technologies Program, under Contract DE-AC02-06CH11357. The work
benefited from the use of PFM supported by Office of Science, Office of
Basic Energy Sciences under Contract DE-AC02-06CH11357. Authors thank Dr
Hua Zhou at the Advanced Photon Source for help with the XRD
measurements. All model calculations, sample preparation, and
experiments were planned, conducted, and analyzed by M.N. The PFM
experiments and analysis were conducted by M. P. and S. H.; S. T., and
S. L. contributed equally to the manuscript.
NR 45
TC 3
Z9 3
U1 1
U2 37
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 31
BP 11901
EP 11907
DI 10.1039/c2ra20678a
PG 7
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051SJ
UT WOS:000312147400041
ER
PT S
AU Fong, RWL
Saari, H
Miller, R
Teutsch, J
Vogel, SC
AF Fong, R. W. L.
Saari, H.
Miller, R.
Teutsch, J.
Vogel, S. C.
BE Chandra, T
Ionescu, M
Mantovani, D
TI A Differential Scanning Calorimetry (DSC) Study of Phase Changes in an
As-received Zr-2.5Nb Pressure Tube Material during Continuous Heating
and Cooling
SO THERMEC 2011, PTS 1-4
SE Materials Science Forum
LA English
DT Proceedings Paper
CT 7th International Conference on Processing and Manufacturing of Advanced
Materials
CY AUG 01-05, 2011
CL Quebec City, CANADA
SP Minerals, Metals & Mat Soc
DE Zr-2.5Nb; DSC; neutron diffraction; phase changes; continuous heating;
cooling
ID BETA-PHASE; BEHAVIOR
AB Differential scanning calorimetry (DSC) has been used to study the phase changes in samples of as-received Zr-2.5Nb pressure tube material by continuous heating and cooling. Two different heating rates (5 and 20 degrees C/min) were used to heat the sample up to 1050 degrees C. After a short time hold at 1050 degrees C, all the samples were continuously cooled to 300 degrees C at a rate of 20 degrees C/min. On continuous heating, the DSC signals obtained showed two endothermic transitions. The low-temperature transition, occurring between about 500 and 650 degrees C, is attributed to a thermal decomposition of metastable niobium-stabilized beta-phase. The higher-temperature transition, occurring between 600 and 950 degrees C, is due to phase transformations of hcp alpha-Zr to bcc beta-Zr, as previously confirmed in a companion study on the same pressure-tube material that was examined in-situ by neutron diffraction. The neutron diffraction results provided a positive identification of the two phases and also a quantification of the beta-phase present in the sample at different heating temperatures, and thus provided a guide to extract the volume fraction of beta-phase from the DSC signals obtained in this study. The DSC signals revealed only one exothermic transition which is correlated to the reverse transformation of beta-Zr to alpha-Zr, as previously identified in the companion neutron diffraction study of the same pressure tube material.
C1 [Fong, R. W. L.] Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada.
[Saari, H.; Miller, R.; Teutsch, J.] Carleton Univ, Dept Mech & Aerosp Engn, Ottawa, ON, Canada.
[Vogel, S. C.] Alamos Natl Lab, Lujan Ctr, LANSCE, Los Alamos, NM 87545 USA.
RP Fong, RWL (reprint author), Atom Energy Canada Ltd, Chalk River Labs, Chalk River, ON K0J 1J0, Canada.
EM fongr@aecl.ca; hsaari@mae.carleton.ca; rmiller@mae.carleton.ca;
jteutsch@connect.carleton.ca; sven@lanl.gov
RI Lujan Center, LANL/G-4896-2012;
OI Vogel, Sven C./0000-0003-2049-0361
NR 7
TC 1
Z9 1
U1 0
U2 4
PU TRANS TECH PUBLICATIONS LTD
PI DURNTEN-ZURICH
PA KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, SWITZERLAND
SN 0255-5476
J9 MATER SCI FORUM
PY 2012
VL 706-709
BP 853
EP +
DI 10.4028/www.scientific.net/MSF.706-709.853
PG 2
WC Materials Science, Multidisciplinary
SC Materials Science
GA BBW89
UT WOS:000308517300141
ER
PT J
AU Elgowainy, A
Zhou, Y
Vyas, AD
Mahalik, M
Santini, D
Wang, M
AF Elgowainy, Amgad
Zhou, Yan
Vyas, Anant D.
Mahalik, Matthew
Santini, Danilo
Wang, Michael
TI Impacts of Charging Choices for Plug-In Hybrid Electric Vehicles in 2030
Scenario
SO TRANSPORTATION RESEARCH RECORD
LA English
DT Article
AB This study systematically examined the potential impacts of recharging scenarios for multiple plug-in hybrid electric vehicles (PHEVs) in the western United States-in particular, the service area of the Western Electricity Coordinating Council (WECC)-in 2030. The goal of the study was twofold: to examine the impact of scenarios for market penetration and charging of PHEVs on the electric utilities and transmission grid and to estimate the potential reductions in petroleum use and greenhouse gas (GHG) emissions attributable to PHEV miles traveled on primarily grid electricity. Three charging scenarios for PHEVS were examined: (a) begin recharging upon arrival at home at the end of the last daily trip, (b) complete recharging of batteries just before the start of the first daily trip, and (c) any additional charging opportunity during the daytime. The three charging scenarios produced distinct hourly electric load profiles, with the opportunity-charging scenario resulting in a significant increase in load during the daytime. However, when the utility dispatch simulations were run for these charging scenarios in the WECC area, they all exhibited similar marginal-generation mixes (dominated by the natural gas combined-cycle technology) to satisfy the PHEV load, and GHG emissions were within 2% of each other. A well-to-wheel analysis revealed that the marginal-generation mixes produced 40% to 45% lower GHG emissions by PHEVs than did conventional gasoline internal combustion engine vehicles.
C1 [Elgowainy, Amgad; Zhou, Yan; Vyas, Anant D.; Mahalik, Matthew; Santini, Danilo; Wang, Michael] Argonne Natl Lab, Ctr Transportat Res, Argonne, IL 60439 USA.
RP Elgowainy, A (reprint author), Argonne Natl Lab, Ctr Transportat Res, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM aelgowainy@anl.gov
FU Vehicle Technology Program, Office of Energy Efficiency and Renewable
Energy, U.S. Department of Energy
FX This work was supported by the Vehicle Technology Program, Office of
Energy Efficiency and Renewable Energy, U.S. Department of Energy. The
authors thank the Autonomie Group for providing vehicle simulation
results for this analysis.
NR 28
TC 11
Z9 11
U1 1
U2 8
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0361-1981
J9 TRANSPORT RES REC
JI Transp. Res. Record
PY 2012
IS 2287
BP 9
EP 17
DI 10.3141/2287-02
PG 9
WC Engineering, Civil; Transportation; Transportation Science & Technology
SC Engineering; Transportation
GA 048NF
UT WOS:000311918500003
ER
PT J
AU Lin, ZH
Dong, J
Liu, CZ
Greene, D
AF Lin, Zhenhong
Dong, Jing
Liu, Changzheng
Greene, David
TI Estimation of Energy Use by Plug-In Hybrid Electric Vehicles Validating
Gamma Distribution for Representing Random Daily Driving Distance
SO TRANSPORTATION RESEARCH RECORD
LA English
DT Article
ID VARIABILITY
AB The fuel and electricity consumptions of plug-in hybrid electric vehicles (PHEVs) are sensitive to the variation of daily vehicle miles traveled (DVMT). Although some researchers have assumed that DVMT follows a gamma distribution, such an assumption has yet to be validated. On the basis of continuous travel data from the Global Positioning System for 382 vehicles, each tracked for at least 183 days, the authors of this study validated the gamma assumption in the context of PHEV energy analysis. Small prediction errors caused by the gamma assumption were found in PHEV fuel use, electricity use, and energy cost. Validating the reliability of the gamma distribution paves the way for its application in energy use analysis of PHEVs in the real world. The gamma distribution can be easily specified with few pieces of driver information and is relatively easy for mathematical manipulation. Validation with real world travel data enables confident use of the gamma distribution in a variety of applications, such as the development of vehicle consumer choice models, the quantification of range anxiety for battery electric vehicles, the investigation of the role of charging infrastructure, and the construction of online calculators that provide personal estimates of PHEV energy use.
C1 [Lin, Zhenhong; Dong, Jing; Liu, Changzheng; Greene, David] Oak Ridge Natl Lab, Natl Transportat Res Ctr, Knoxville, TN 37932 USA.
RP Lin, ZH (reprint author), Oak Ridge Natl Lab, Natl Transportat Res Ctr, 2360 Cherahala Blvd, Knoxville, TN 37932 USA.
EM linz@ornl.gov
RI Liu, Changzheng/J-4268-2014
OI Liu, Changzheng/0000-0003-0052-4552
FU Vehicle Technologies Program, Office of Energy Efficiency and Renewable
Energy, U.S. Department of Energy; UT-Battelle, LLC.
FX This study was sponsored by the Vehicle Technologies Program, Office of
Energy Efficiency and Renewable Energy, U.S. Department of Energy, with
UT-Battelle, LLC. The authors thank Phil Patterson, Jake Ward, and
Dennis Smith for their support.
NR 26
TC 11
Z9 11
U1 1
U2 15
PU NATL ACAD SCIENCES
PI WASHINGTON
PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA
SN 0361-1981
J9 TRANSPORT RES REC
JI Transp. Res. Record
PY 2012
IS 2287
BP 37
EP 43
DI 10.3141/2287-05
PG 7
WC Engineering, Civil; Transportation; Transportation Science & Technology
SC Engineering; Transportation
GA 048NF
UT WOS:000311918500006
ER
PT S
AU Malone, RM
Baker, SA
Brown, KK
Curtis, AH
Esquibel, DL
Frayer, DK
Frogget, BC
Furlanetto, MR
Garten, JR
Haines, TJ
Howe, RA
Huerta, JA
Kaufman, MI
King, NSP
Lutz, SS
McGillivray, KD
Smith, AS
AF Malone, Robert M.
Baker, Stuart A.
Brown, Kristina K.
Curtis, Alden H.
Esquibel, David L.
Frayer, Daniel K.
Frogget, Brent C.
Furlanetto, Michael R.
Garten, James R.
Haines, Todd J.
Howe, Russell A.
Huerta, Joe A.
Kaufman, Morris I.
King, Nicholas S. P.
Lutz, Stephen S.
McGillivray, Kevin D.
Smith, Andrew S.
BE Betensky, EI
Yamanashi, T
TI ` Design and assembly of a telecentric zoom lens for the Cygnus x-ray
source
SO ZOOM LENSES IV
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Zoom Lenses IV
CY AUG 12-13, 2012
CL San Diego, CA
SP SPIE
DE zoom lens; telecentric lens design; optical metrology; optical alignment
AB Cygnus is a high-energy radiographic x-ray source. The rod-pinch x-ray diode produces a point source measuring 1 mm diameter. The target object is placed 1.5 m from the x-ray source, with a large LYSO scintillator at 2.4 m. Different-sized objects are imploded within a containment vessel. A large pellicle deflects the scintillator light out of the x-ray path into an 11-element zoom lens coupled to a CCD camera. The zoom lens and CCD must be as close as possible to the scintillator to maximize light collection. A telecentric lens design minimizes image blur from a volume source. To maximize the resolution of test objects of different sizes, the scintillator and zoom lens can be translated along the x-ray axis. Zoom lens magnifications are changed when different-sized scintillators and recording cameras are used (50 or 62 mm square format). The LYSO scintillator measures 200 x 200 mm and is 5 mm thick. The scintillator produces blue light peaking at 435 nm, so special lens materials are required. By swapping out one lens element and allowing all lenses to move, the zoom lens can also use a CsI(Tl) scintillator that produces green light centered at 550 nm. All lenses are coated with anti-reflective coating for both wavelength bands. Two sets of doublets, the stop, and the CCD camera move during zoom operations. One doublet has XY compensation. The first three lenses use fused silica for radiation damage control. The 60 lb of glass inside the 340 lb mechanical structure is oriented vertically.
C1 [Malone, Robert M.; Baker, Stuart A.; Brown, Kristina K.; Curtis, Alden H.; Esquibel, David L.; Frayer, Daniel K.; Frogget, Brent C.; Kaufman, Morris I.; Smith, Andrew S.] Natl Secur Technol LLC, POB 809, Los Alamos, NM 87544 USA.
[Furlanetto, Michael R.; Haines, Todd J.; King, Nicholas S. P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Garten, James R.; Howe, Russell A.; Huerta, Joe A.; McGillivray, Kevin D.] Nat Secur Technol LLC, Las Vegas, NV 89193 USA.
[Lutz, Stephen S.] Nat Secur Technol LLC, Santa Barbara, CA 93111 USA.
RP Malone, RM (reprint author), Natl Secur Technol LLC, POB 809, Los Alamos, NM 87544 USA.
EM malonerm@nv.doe.gov
NR 4
TC 3
Z9 3
U1 0
U2 5
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9205-0
J9 PROC SPIE
PY 2012
VL 8488
AR 84880B
DI 10.1117/12.929160
PG 14
WC Optics; Imaging Science & Photographic Technology
SC Optics; Imaging Science & Photographic Technology
GA BCZ53
UT WOS:000312205300010
ER
PT J
AU Ji, F
Aji, AM
Dinan, J
Buntinas, D
Balaji, P
Thakur, R
Feng, WC
Ma, XS
AF Ji, Feng
Aji, Ashwin M.
Dinan, James
Buntinas, Darius
Balaji, Pavan
Thakur, Rajeev
Feng, Wu-Chun
Ma, Xiaosong
GP IEEE
BE Min, G
Lefevre, L
Hu, J
Liu, L
Yang, LT
Seelam, S
TI DMA-Assisted, Intranode Communication in GPU Accelerated Systems
SO 2012 IEEE 14TH INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING
AND COMMUNICATIONS & 2012 IEEE 9TH INTERNATIONAL CONFERENCE ON EMBEDDED
SOFTWARE AND SYSTEMS (HPCC-ICESS)
LA English
DT Proceedings Paper
CT 14th IEEE International Conference on High Performance Computing and
Communications (HPCC) / IEEE 9th International Conference on Embedded
Software and Systems (ICESS)
CY JUN 25-28, 2012
CL Liverpool, ENGLAND
SP IEEE, IEEE Comp Soc, Univ Bradford, IEEE Tech Comm Scalable Comp
ID IMPLEMENTATION; MPI
AB Accelerator awareness has become a pressing issue in data movement models, such as MPI, because of the rapid deployment of systems that utilize accelerators. In our previous work, we developed techniques to enhance MPI with accelerator awareness, thus allowing applications to easily and efficiently communicate data between accelerator memories. In this paper, we extend this work with techniques to perform efficient data movement between accelerators within the same node using a DMA-assisted, peer-to-peer intranode communication technique that was recently introduced for NVIDIA GPUs. We present a detailed design of our new approach to intranode communication and evaluate its improvement to communication and application performance using micro-kernel benchmarks and a 2D stencil application kernel.
C1 [Ji, Feng; Ma, Xiaosong] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA.
[Aji, Ashwin M.; Feng, Wu-Chun] Virginia Tech, Dept Comp Sci, Blacksburg, VA USA.
[Dinan, James; Buntinas, Darius; Balaji, Pavan; Thakur, Rajeev] Argonne Natl Lab, Mat & Comp Sci Div, Argonne, IL 60439 USA.
RP Ji, F (reprint author), N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA.
EM fji@ncsu.edu; aaji@cs.vt.edu; dinan@mcs.anl.gov; buntinas@mcs.anl.gov;
balaji@mcs.anl.gov; thakur@mcs.anl.gov; feng@cs.vt.edu; ma@cs.ncsu.edu
FU National Science Foundation through Career [CNS-0546301, CNS-0915861,
MRI-0960081, CSR-0916719]; NSF Center for High- Performance Recongurable
Computing [IIP-0804155]; U.S. Department of Energy [DE-AC02-06CH11357];
NCSU; ORNL; Keeneland Computing Facility at the Georgia Institute of
Technology; National Science Foundation [OCI-0910735]
FX This work was supported in part by the National Science Foundation
through Career Award CNS-0546301; awards CNS-0915861, MRI-0960081, and
CSR-0916719; and award I/UCRC IIP-0804155 via the NSF Center for High-
Performance Recongurable Computing. This work was also supported by the
U.S. Department of Energy under Contract DE-AC02-06CH11357 and X. Mas
joint appointment between NCSU and ORNL. The authors also used resources
provided by the Keeneland Computing Facility at the Georgia Institute of
Technology, which is supported by the National Science Foundation under
contract OCI-0910735.
NR 19
TC 1
Z9 1
U1 0
U2 4
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
BN 978-0-7695-4749-7
PY 2012
BP 461
EP 468
DI 10.1109/HPCC.2012.69
PG 8
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BCK16
UT WOS:000310377500060
ER
PT J
AU Aji, AM
Dinan, J
Buntinas, D
Balaji, P
Feng, WC
Bisset, KR
Thakur, R
AF Aji, Ashwin M.
Dinan, James
Buntinas, Darius
Balaji, Pavan
Feng, Wu-chun
Bisset, Keith R.
Thakur, Rajeev
GP IEEE
BE Min, G
Lefevre, L
Hu, J
Liu, L
Yang, LT
Seelam, S
TI MPI-ACC: An Integrated and Extensible Approach to Data Movement in
Accelerator-Based Systems
SO 2012 IEEE 14TH INTERNATIONAL CONFERENCE ON HIGH PERFORMANCE COMPUTING
AND COMMUNICATIONS & 2012 IEEE 9TH INTERNATIONAL CONFERENCE ON EMBEDDED
SOFTWARE AND SYSTEMS (HPCC-ICESS)
LA English
DT Proceedings Paper
CT 14th IEEE International Conference on High Performance Computing and
Communications (HPCC) / IEEE 9th International Conference on Embedded
Software and Systems (ICESS)
CY JUN 25-28, 2012
CL Liverpool, ENGLAND
SP IEEE, IEEE Comp Soc, Univ Bradford, IEEE Tech Comm Scalable Comp
DE MPI; GPU; CUDA; OpenCL; MPI-ACC
AB Data movement in high-performance computing systems accelerated by graphics processing units (GPUs) remains a challenging problem. Data communication in popular parallel programming models, such as the Message Passing Interface (MPI), is currently limited to the data stored in the CPU memory space. Auxiliary memory systems, such as GPU memory, are not integrated into such data movement frameworks, thus providing applications with no direct mechanism to perform end-to-end data movement. We introduce MPI-ACC, an integrated and extensible framework that allows end-to-end data movement in accelerator-based systems. MPI-ACC provides productivity and performance benefits by integrating support for auxiliary memory spaces into MPI. MPI-ACC's runtime system enables several key optimizations, including pipelining of data transfers and balancing of communication based on accelerator and node architecture. We demonstrate the extensible design of MPI-ACC by using the popular CUDA and OpenCL accelerator programming interfaces. We examine the impact of MPI-ACC on communication performance and evaluate application-level benefits on a large-scale epidemiology simulation.
C1 [Aji, Ashwin M.; Feng, Wu-chun] Virginia Tech, Dept Comp Sci, Blacksburg, VA 24061 USA.
[Dinan, James; Buntinas, Darius; Balaji, Pavan; Thakur, Rajeev] Math & Comp Sci Div, Argonne Natl Lab, Blacksburg, VA USA.
[Bisset, Keith R.] Virginia Bioinformat Inst, Blacksburg, VA USA.
RP Aji, AM (reprint author), Virginia Tech, Dept Comp Sci, Blacksburg, VA 24061 USA.
EM aaji@cs.vt.edu; dinan@mcs.anl.gov; buntinas@mcs.anl.gov;
balaji@mcs.anl.gov; feng@cs.vt.edu; kbisset@vbi.vt.edu;
thakur@mcs.anl.gov
FU U.S. Department of Energy [DE-AC02-06CH11357]; NSF via the Center for
High-Performance Recongurable Computing [I/UCRC IIP-0804155,
MRI-0960081, CSR-0916719]; NSF PetaApps [OCI-0904844]; DTRA CNIMS
[HDTRA1-11-D-0016-0001]; NIH MI-DAS [2U01GM070694-09, 3U01FM070694-09S1]
FX This work was supported in part by the U.S. Department of Energy
contract DE-AC02-06CH11357, NSF grant I/UCRC IIP-0804155 via the NSF
Center for High-Performance Recongurable Computing, NSF grant
MRI-0960081, NSF grant CSR-0916719, NSF PetaApps Grant OCI-0904844, DTRA
CNIMS Contract HDTRA1-11-D-0016-0001, and NIH MI-DAS Grants
2U01GM070694-09 and 3U01FM070694-09S1.
NR 13
TC 5
Z9 5
U1 0
U2 1
PU IEEE COMPUTER SOC
PI LOS ALAMITOS
PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
BN 978-0-7695-4749-7
PY 2012
BP 647
EP 654
DI 10.1109/HPCC.2012.92
PG 8
WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic
SC Computer Science; Engineering
GA BCK16
UT WOS:000310377500083
ER
PT J
AU Jung, S
Foston, M
Kalluri, UC
Tuskan, GA
Ragauskas, AJ
AF Jung, Seokwon
Foston, Marcus
Kalluri, Udaya C.
Tuskan, Gerald A.
Ragauskas, Arthur J.
TI 3D Chemical Image using TOF-SIMS Revealing the Biopolymer Component
Spatial and Lateral Distributions in Biomass
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE 3D TOF-SIMS; biomass; imaging mass spectrometry; wood
ID LIGNOCELLULOSIC BIOMASS; TENSION WOOD; BIOFUEL PRODUCTION; FIBER
SURFACES; RECALCITRANCE; PRETREATMENT; MODEL; XPS
C1 [Jung, Seokwon; Foston, Marcus; Ragauskas, Arthur J.] Georgia Inst Technol, Sch Chem & Biochem, BioEnergy Sci Ctr, Atlanta, GA 30332 USA.
[Kalluri, Udaya C.; Tuskan, Gerald A.] Oak Ridge Natl Lab, BioEnergy Sci Ctr, Oak Ridge, TN 37831 USA.
[Kalluri, Udaya C.; Tuskan, Gerald A.] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
RP Ragauskas, AJ (reprint author), Georgia Inst Technol, Sch Chem & Biochem, BioEnergy Sci Ctr, 500 10th St NW, Atlanta, GA 30332 USA.
EM Art.Ragauskas@chemistry.gatech.edu
RI Tuskan, Gerald/A-6225-2011;
OI Tuskan, Gerald/0000-0003-0106-1289; Ragauskas,
Arthur/0000-0002-3536-554X
FU US Department of Energy; Office of Biological and Environmental Research
in the DOE Office of Science; BioEnergy Science Center (BESC)
FX This work is also supported by the US Department of Energy and BioEnergy
Science Center (BESC). The BESC is a U.S. Department of Energy Bioenergy
Research Center supported by the Office of Biological and Environmental
Research in the DOE Office of Science. TOF-SIMS = time-of-flight
secondary-ion mass spectrometry. A.J.R. wishes to thank J.B. Stothers
for his guidance and support of his academic career.
NR 25
TC 17
Z9 17
U1 3
U2 48
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 48
BP 12005
EP 12008
DI 10.1002/anie.201205243
PG 4
WC Chemistry, Multidisciplinary
SC Chemistry
GA 045OB
UT WOS:000311705000013
PM 23109300
ER
PT J
AU Zhang, GQ
Scott, BL
Hanson, SK
AF Zhang, Guoqi
Scott, Brian L.
Hanson, Susan K.
TI Mild and Homogeneous Cobalt-Catalyzed Hydrogenation of C=C, C=O, and C=N
Bonds
SO ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
LA English
DT Article
DE cobalt; homogeneous catalysis; hydrogenation; synthetic methods
ID ASYMMETRIC HYDROGENATION; ALKENE HYDROGENATION; CARBONYL-COMPLEXES;
HYDRIDE COMPLEXES; ALKYL COMPLEXES; 3-COORDINATE; DINITROGEN; CHEMISTRY;
MECHANISM; KINETICS
C1 [Zhang, Guoqi; Scott, Brian L.; Hanson, Susan K.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA.
[Zhang, Guoqi; Scott, Brian L.; Hanson, Susan K.] Los Alamos Natl Lab, Mat Phys Applicat Div, Los Alamos, NM 87545 USA.
RP Hanson, SK (reprint author), Los Alamos Natl Lab, Div Chem, MS J582, Los Alamos, NM 87545 USA.
EM skhanson@lanl.gov
RI Zhang, Guoqi/K-7617-2012; Scott, Brian/D-8995-2017
OI Zhang, Guoqi/0000-0001-6071-8469; Scott, Brian/0000-0003-0468-5396
FU Los Alamos National Laboratory LDRD Early Career Award [20110537ER]
FX This work was supported by Los Alamos National Laboratory LDRD Early
Career Award (20110537ER).
NR 41
TC 100
Z9 100
U1 4
U2 129
PU WILEY-V C H VERLAG GMBH
PI WEINHEIM
PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
SN 1433-7851
J9 ANGEW CHEM INT EDIT
JI Angew. Chem.-Int. Edit.
PY 2012
VL 51
IS 48
BP 12102
EP 12106
DI 10.1002/anie.201206051
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 045OB
UT WOS:000311705000036
PM 23042754
ER
PT S
AU Olson, DG
Lynd, LR
AF Olson, Daniel G.
Lynd, Lee R.
BE Gilbert, HJ
TI TRANSFORMATION OF CLOSTRIDIUM THERMOCELLUM BY ELECTROPORATION
SO CELLULASES
SE Methods in Enzymology
LA English
DT Review; Book Chapter
ID CELLULASE; DELETION; ETHANOL
AB In this work, we provide detailed instructions for transformation of Clostridium thermocellum by electroporation. In addition, we describe two schemes for genetic modification: allelic replacement where the gene of interest is replaced by an antibiotic marker and markerless gene deletion where the gene of interest is removed and the selective markers are recycled. The markerless gene deletion technique can also be used for insertion of genes onto the C. thermocellum chromosome.
C1 [Olson, Daniel G.; Lynd, Lee R.] Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
[Lynd, Lee R.] Mascoma Corp, Lebanon, NH USA.
[Lynd, Lee R.] Dartmouth Coll, Dept Biol, Hanover, NH 03755 USA.
[Olson, Daniel G.; Lynd, Lee R.] BioEnergy Sci Ctr, Oak Ridge, TN USA.
RP Olson, DG (reprint author), Dartmouth Coll, Thayer Sch Engn, Hanover, NH 03755 USA.
RI Lynd, Lee/N-1260-2013; Olson, Daniel/F-2058-2011
OI Lynd, Lee/0000-0002-5642-668X; Olson, Daniel/0000-0001-5393-6302
NR 13
TC 35
Z9 36
U1 0
U2 24
PU ELSEVIER ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0076-6879
BN 978-0-12-415931-0
J9 METHOD ENZYMOL
JI Methods Enzymol.
PY 2012
VL 510
BP 317
EP 330
DI 10.1016/B978-0-12-415931-0.00017-3
PG 14
WC Biochemical Research Methods; Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA BBU32
UT WOS:000308194700017
PM 22608734
ER
PT S
AU Gardner, JG
Keating, DH
AF Gardner, Jeffrey G.
Keating, David H.
BE Gilbert, HJ
TI GENETIC AND FUNCTIONAL GENOMIC APPROACHES FOR THE STUDY OF PLANT CELL
WALL DEGRADATION IN CELLVIBRIO JAPONICUS
SO CELLULASES
SE Methods in Enzymology
LA English
DT Review; Book Chapter
ID GRAM-NEGATIVE BACTERIA; BROAD-HOST-RANGE; ESCHERICHIA-COLI; VALINE
METABOLISM; SELECTION; VECTORS; CLONING; BIOSYNTHESIS; ISOLEUCINE;
INSERTION
AB Microbial degradation of plant cell walls is a critical contributor to the global carbon cycle, and enzymes derived from microbes play a key role in the sustainable biofuels industry. Despite its biological and biotechnological importance, relatively little is known about how microbes degrade plant cell walls. Much of this gap in knowledge has resulted from difficulties in extending modern molecular tools to the study of plant cell wall-degrading microbes. The bacterium Cellvibrio japonicus has recently emerged as a powerful model system for the study of microbial plant cell wall degradation. C. japonicus is unique among microbial model systems in that it possesses the ability to carry out the complete degradation of plant cell wall polysaccharides. Furthermore, an extensive array of genetic and molecular tools exists for functional genomic analysis. In this review, we describe progress in the development of methodology for the functional genomic study of plant cell wall degradation by this microbe, and discuss future directions for research.
C1 [Gardner, Jeffrey G.; Keating, David H.] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
RP Gardner, JG (reprint author), Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA.
NR 31
TC 7
Z9 7
U1 0
U2 26
PU ELSEVIER ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0076-6879
BN 978-0-12-415931-0
J9 METHOD ENZYMOL
JI Methods Enzymol.
PY 2012
VL 510
BP 331
EP 347
DI 10.1016/B978-0-12-415931-0.00018-5
PG 17
WC Biochemical Research Methods; Biochemistry & Molecular Biology
SC Biochemistry & Molecular Biology
GA BBU32
UT WOS:000308194700018
PM 22608735
ER
PT J
AU Fliedner, TM
Graessle, DH
Meineke, V
Feinendegen, LE
AF Fliedner, Theodor M.
Graessle, Dieter H.
Meineke, Viktor
Feinendegen, Ludwig E.
TI HEMOPOIETIC RESPONSE TO LOW DOSE-RATES OF IONIZING RADIATION SHOWS STEM
CELL TOLERANCE AND ADAPTATION
SO DOSE-RESPONSE
LA English
DT Article
DE chronic irradiation; hemopoietic tolerance; stem cell adaptation
ID CONTINUOUS IRRADIATION; BODY IRRADIATION; PROGENITOR CELLS; BONE-MARROW;
EXPOSURE; MOUSE; CONSEQUENCES; DOSIMETRY; WORKSHOP; THERAPY
AB Chronic exposure of mammals to low dose-rates of ionizing radiation affects proliferating cell systems as a function of both dose-rate and the total dose accumulated. The lower the dose-rate the higher needs to be the total dose for a deterministic effect, i.e., tissue reaction to appear. Stem cells provide for proliferating, maturing and functional cells. Stem cells usually are particularly radiosensitive and damage to them may propagate to cause failure of functional cells. The paper revisits 1) medical histories with emphasis on the hemopoietic system of the victims of ten accidental chronic radiation exposures, 2) published hematological findings of long-term chronically gamma-irradiated rodents, and 3) such findings in dogs chronically exposed in large life-span studies. The data are consistent with the hypothesis that hemopoietic stem and early progenitor cells have the capacity to tolerate and adapt to being repetitively hit by energy deposition events. The data are compatible with the "injured stem cell hypothesis", stating that radiation-injured stem cells, depending on dose-rate, may continue to deliver clones of functional cells that maintain homeostasis of hemopoiesis throughout life. Further studies perhaps on separated hemopoietic stem cells may unravel the molecular-biology mechanisms causing radiation tolerance and adaptation.
C1 [Feinendegen, Ludwig E.] Univ Dusseldorf, Dusseldorf, Germany.
[Feinendegen, Ludwig E.] Brookhaven Natl Lab, Upton, NY 11973 USA.
[Fliedner, Theodor M.; Graessle, Dieter H.] Univ Ulm, Radiat Med Res Grp, D-89069 Ulm, Germany.
[Fliedner, Theodor M.; Graessle, Dieter H.] Univ Ulm, WHO Liaison Inst Radiat Accid Management, D-89069 Ulm, Germany.
[Meineke, Viktor] Univ Ulm, Bundeswehr Inst Radiobiol, D-89069 Ulm, Germany.
RP Feinendegen, LE (reprint author), Univ Dusseldorf, Dusseldorf, Germany.
EM feinendegen@gmx.net
NR 48
TC 15
Z9 15
U1 0
U2 4
PU INT DOSE-RESPONSE SOC
PI AMHERST
PA UNIV MASSACHUSETTS SPH, MORRILL SCI CTR 1, N344, 639 N PLEASANT ST,
AMHERST, MA 01003-9298 USA
SN 1559-3258
J9 DOSE-RESPONSE
JI Dose-Response
PY 2012
VL 10
IS 4
BP 644
EP 663
DI 10.2203/dose-response.12-014.Feinendegen
PG 20
WC Pharmacology & Pharmacy; Radiology, Nuclear Medicine & Medical Imaging;
Toxicology
SC Pharmacology & Pharmacy; Radiology, Nuclear Medicine & Medical Imaging;
Toxicology
GA 050VB
UT WOS:000312081100014
PM 23304110
ER
PT J
AU Vega, JA
Jimenez, E
Dupuy, JL
Linn, RR
AF Vega, J. A.
Jimenez, E.
Dupuy, J. -L.
Linn, R. R.
TI Effects of flame interaction on the rate of spread of heading and
suppression fires in shrubland experimental fires
SO INTERNATIONAL JOURNAL OF WILDLAND FIRE
LA English
DT Article
ID BEHAVIOR; WIND; FUEL; MOORLANDS; FLOWS; SLOPE
AB Suppression fires are frequently used in wildland firefighting operations. However, little is known about how suppression fires behave and how the main front and the suppression fire interact. Lack of information limits the operational use and effectiveness of suppression fires and compromises the safety of firefighters. A series of experimental fires were conducted in a shrubland fuel complex in Galicia to quantify the effect of the interaction between a heading fire burning upslope with the prevailing wind and a suppression fire burning downslope from a control line against the wind. An empirical model was developed to estimate the possible effect of interaction between fronts on the rate of spread of both fronts. For heading fires, the explanatory variables were: wind speed on the windward side of the fire, distance between fronts and slope angle. In contrast, for suppression fires, the only significant explanatory variable was the distance between fronts. The models reflected the observed low to moderate acceleration in the rate of spread of both fronts and the short distance over which interaction occurred (<20 m). The study revealed that the safe and effective use of suppression firing is more limited than previously expected. In fact, with moderately high wind velocities on flat and moderately steep terrain, the use of line firing appeared unsafe.
C1 [Vega, J. A.; Jimenez, E.] Ctr Invest Forestal Lourizan, E-36080 Pontevedra, Spain.
[Dupuy, J. -L.] INRA, Unite Rech 629, F-84914 Avignon 9, France.
[Linn, R. R.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87544 USA.
RP Vega, JA (reprint author), Ctr Invest Forestal Lourizan, POB 127, E-36080 Pontevedra, Spain.
EM jose.antonio.vega.hidalgo@xunta.es
FU European Commission through FIRE PARADOX [FP6-018505]; SATFOR
[SOE2/P2/E457]; Ministry of Education and Science of Spain; FEDER
[RTA2009-00153-C03]
FX This study was funded by the European Commission through the FIRE
PARADOX (FP6-018505) and SATFOR (SOE2/P2/E457) projects, and by the
Ministry of Education and Science of Spain through the co-financed FEDER
project RTA2009-00153-C03. We are grateful to A. Arellano for valuable
field assistance and all those who also helped with field and laboratory
work, particularly J. R. Gonzalez, E. Perez, J. Pardo, M. Lopez, B.
Gonzalez, J. Gallego and D. Vieira. We also appreciate the collaboration
of the Direccion Xeral de Montes, Xunta de Galicia, particularly D. Diaz
and the Comunidad de Montes de Deza-Tabeiros. We would also like to
thank two anonymous reviewers and the associate editor for their useful
comments and suggestions, which helped to improve an earlier version of
the manuscript.
NR 61
TC 0
Z9 0
U1 3
U2 9
PU CSIRO PUBLISHING
PI COLLINGWOOD
PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA
SN 1049-8001
J9 INT J WILDLAND FIRE
JI Int. J. Wildland Fire
PY 2012
VL 21
IS 8
BP 950
EP 960
DI 10.1071/WF10124
PG 11
WC Forestry
SC Forestry
GA 043PV
UT WOS:000311557400003
ER
PT J
AU Tian, CC
Chai, SH
Zhu, X
Wu, ZL
Binder, A
Bauer, JC
Brwon, S
Chi, MF
Veith, GM
Guo, YL
Dai, S
AF Tian, Chengcheng
Chai, Song-Hai
Zhu, Xiang
Wu, Zili
Binder, Andrew
Bauer, J. Chris
Brwon, Suree
Chi, Miaofang
Veith, Gabriel M.
Guo, Yanglong
Dai, Sheng
TI In situ growth synthesis of heterostructured LnPO(4)-SiO2 (Ln = La, Ce,
and Eu) mesoporous materials as supports for small gold particles used
in catalytic CO oxidation
SO JOURNAL OF MATERIALS CHEMISTRY
LA English
DT Article
ID LOW-TEMPERATURE OXIDATION; GAS SHIFT REACTION; CARBON-MONOXIDE; AU/TIO2
CATALYSTS; AU/SIO2 CATALYST; H-2-RICH GAS; AU; NANOPARTICLES; TITANIA;
HYDROXYAPATITE
AB A general in situ growth method was successfully employed to prepare lanthanide phosphate-SiO2 mesostructured cellular foams (MCFs) (LnPO(4)-MCFs; Ln = La, Ce, and Eu; MCFs SiO2). These heterostructured MCFs (LnPO(4)-MCFs) feature binary interpenetrating LnPO(4) and silica frameworks, large surface areas, and uniform mesopore diameters. They were characterized by small-angle X-ray scattering, X-ray diffraction, nitrogen sorption, and transmission electron microscopy. The essence of this in situ growth synthesis lies in the controlled heterogeneous reaction of highly dispersed lanthanide oxides embedded in MCFs with phosphate ions in solution, leading to the formation of highly dispersed crystalline phosphate nanorods (nanocrystalline LnPO(4)) on the walls of MCFs. The resultant heterostructured LnPO(4)-MCFs were used as a novel support system for gold catalysts in CO oxidation at low temperatures. Gold precursor species can be readily introduced on LnPO(4) nanophases of LnPO(4)-MCFs via a simple deposition-precipitation method. The resulting Au-LnPO(4)-MCF (2 wt% Au) catalysts exhibited high catalytic activities even below room temperatures. Because of the alteration of surface properties engineered by the in situ growth methodology and the strong interaction of metallic gold species with LnPO(4), these catalysts are highly sinter-resistant. Although some cationic Au species are also present on the LnPO(4)-MCF surfaces, the metallic gold species are shown to be the key catalytic active sites for CO oxidation via in situ infrared spectroscopy.
C1 [Tian, Chengcheng; Zhu, Xiang; Guo, Yanglong] E China Univ Sci & Technol, Key Lab Adv Mat, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China.
[Tian, Chengcheng; Chai, Song-Hai; Zhu, Xiang; Wu, Zili; Bauer, J. Chris; Dai, Sheng] Oak Ridge Natl Lab, Chem Sci Div, Oak Ridge, TN 37831 USA.
[Binder, Andrew; Brwon, Suree] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA.
[Chi, Miaofang; Veith, Gabriel M.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA.
RP Guo, YL (reprint author), E China Univ Sci & Technol, Key Lab Adv Mat, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China.
EM ylguo@ecust.edu.cn; dais@ornl.gov
RI Chai, Song-Hai/A-9299-2012; Bauer, John/J-3150-2012; Zhu,
Xiang/P-6867-2014; Chi, Miaofang/Q-2489-2015; Dai, Sheng/K-8411-2015
OI Chai, Song-Hai/0000-0002-4152-2513; Zhu, Xiang/0000-0002-3973-4998; Chi,
Miaofang/0000-0003-0764-1567; Dai, Sheng/0000-0002-8046-3931
FU Division of Chemical Sciences, Geosciences, and Biosciences, Office of
Basic Energy Sciences, US Department of Energy [De-AC05-00OR22725]; Oak
Ridge National Laboratory; Scientific User Facilities Division, Office
of Basic Energy Science, US Department of Energy; Oak Ridge National
Laboratory (ORNL) Shared Research Equipment (SHaRE) User Facility;
Scientific User Facilities Division, Office of Basic Energy Sciences, US
Department of Energy (DOE); National Basic Research Program of China
[2010CB732300, 2013CB933201]; Program for New Century Excellent Talents
in University [NCET-09-0343]; Shu Guang Project [10SG30]; 111 Project
[B08021]
FX The research was sponsored by the Division of Chemical Sciences,
Geosciences, and Biosciences, Office of Basic Energy Sciences, US
Department of Energy, under Contract no. De-AC05-00OR22725 with Oak
Ridge National Laboratory managed and operated by UT-Battelle, LLC. The
DRIFTS experiment was conducted at the Center for Nanophase Materials
Sciences, which is sponsored at Oak Ridge National Laboratory by the
Scientific User Facilities Division, Office of Basic Energy Science, US
Department of Energy. Microscopy research was supported in part by Oak
Ridge National Laboratory (ORNL) Shared Research Equipment (SHaRE) User
Facility, which is sponsored by the Scientific User Facilities Division,
Office of Basic Energy Sciences, US Department of Energy (DOE). CCT and
YLG thank the National Basic Research Program of China (2010CB732300,
2013CB933201), Program for New Century Excellent Talents in University
(NCET-09-0343), the Shu Guang Project (10SG30), and 111 Project
(B08021).
NR 56
TC 11
Z9 11
U1 6
U2 78
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 0959-9428
J9 J MATER CHEM
JI J. Mater. Chem.
PY 2012
VL 22
IS 48
BP 25227
EP 25235
DI 10.1039/c2jm35416k
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 049GN
UT WOS:000311970800032
ER
PT J
AU Kim, S
Kim, C
Jhon, YI
Noh, JK
Vemuri, SH
Smith, R
Chung, KY
Jhon, MS
Cho, BW
AF Kim, Soo
Kim, Chunjoong
Jhon, Young-In
Noh, Jae-Kyo
Vemuri, Sesha Hari
Smith, Robert
Chung, Kyung Yoon
Jhon, Myung S.
Cho, Byung-Won
TI Synthesis of layered-layered 0.5Li(2)MnO(3)center dot 0.5LiCoO(2)
nanocomposite electrode materials by the mechanochemical process and
first principles study
SO JOURNAL OF MATERIALS CHEMISTRY
LA English
DT Article
ID RECHARGEABLE LITHIUM BATTERIES; LICOO2 CATHODE MATERIAL; HIGH-ENERGY
CATHODE; LI-ION BATTERIES; SOLID-SOLUTIONS; ELECTROCHEMICAL PROPERTIES;
POSITIVE-ELECTRODE; HIGH-CAPACITY; HIGH-POWER; MN
AB Li2MnO3-stabilized LiCoO2 electrode materials were synthesized using the method of mechanochemical process. Li2MnO3 was prepared and the mechanochemical process was carried out with LiCoO2, which yielded the layered-layered integrated structure nanocomposites. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and high-resolution transmission electron microscopy studies confirmed the structural integration of 0.5Li(2)MnO(3)center dot 0.5LiCoO(2) electrode materials. We also performed the high temperature heat treatment, where our 0.5Li(2)MnO(3)center dot 0.5LiCoO(2) electrode materials showed improvement in the discharge capacity (similar to 180 mA h g(-1)) with good cycleability. To obtain a physical insight into the performance of the nanocomposite structure, we carried out first principles calculations to obtain activation energy barriers of Li+ de-/intercalation, which suggested that utilizing both Li2MnO3 and LiCoO2 components can enhance the Li+ diffusion for the layered-layered integrated structure.
C1 [Jhon, Young-In; Jhon, Myung S.] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea.
[Vemuri, Sesha Hari; Smith, Robert; Jhon, Myung S.] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA.
[Kim, Soo; Noh, Jae-Kyo; Chung, Kyung Yoon; Cho, Byung-Won] Korea Inst Sci & Technol, Ctr Energy Convergence, Seoul 136791, South Korea.
[Kim, Chunjoong] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA.
RP Jhon, MS (reprint author), Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea.
EM mj3a@andrew.cmu.edu; bwcho@kist.re.kr
RI Chung, Kyung Yoon/E-4646-2011;
OI Chung, Kyung Yoon/0000-0002-1273-746X; Kim, Soo/0000-0002-1701-6784
FU National Research Foundation of Korea; Korean Government (MEST)
[NRF-2011-C1AAA001-0030538]; Ministry of Education, Science and
Technology (MEST) [2011-00115]; Office of Vehicle Technologies of the
U.S. Department of Energy [DE-AC02-05CH11231]; Korea Science and
Engineering Foundation through the WCU project
FX The work at Korea Institute of Science and Technology (KIST) was
supported by the National Research Foundation of Korea Grant funded by
the Korean Government (MEST) (NRF-2011-C1AAA001-0030538), which is
funded by the Ministry of Education, Science and Technology (MEST)
(grant number: 2011-00115). The work at Lawrence Berkeley National
Laboratory (LBNL) was supported by the Assistant Secretary for Energy
Efficiency and Renewable Energy, Office of Vehicle Technologies of the
U.S. Department of Energy under contract no. DE-AC02-05CH11231. The work
at Sungkyunkwan University and Carnegie Mellon University was supported
by Korea Science and Engineering Foundation through the WCU project.
NR 50
TC 23
Z9 24
U1 1
U2 64
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 0959-9428
J9 J MATER CHEM
JI J. Mater. Chem.
PY 2012
VL 22
IS 48
BP 25418
EP 25426
DI 10.1039/c2jm35654f
PG 9
WC Chemistry, Physical; Materials Science, Multidisciplinary
SC Chemistry; Materials Science
GA 049GN
UT WOS:000311970800055
ER
PT J
AU Valiei, A
Kumar, A
Mukherjee, PP
Liu, Y
Thundat, T
AF Valiei, Amin
Kumar, Aloke
Mukherjee, Partha P.
Liu, Yang
Thundat, Thomas
TI A web of streamers: biofilm formation in a porous microfluidic device
SO LAB ON A CHIP
LA English
DT Article
ID MICROBIAL BIOFILMS; BACTERIAL BIOFILMS; GROWTH; MEDIA; LAMINAR; BIOCHIP
AB Using a microfabricated porous media mimic platform, we investigated how fluid flow influences the formation of filamentous structures, known as streamers, between porous media structures. We demonstrate how hydrodynamics govern the formation, morphology and the distribution of these biofilm streamers in the device. Our work establishes that, under favorable hydrodynamic conditions, streamers can often act as precursors to mature microbial structures found in complex geometries, such as those involved in porous media.
C1 [Valiei, Amin; Thundat, Thomas] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada.
[Kumar, Aloke] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA.
[Mukherjee, Partha P.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA.
[Liu, Yang] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2, Canada.
RP Thundat, T (reprint author), Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada.
EM kumara1@ornl.gov; thundat@ualberta.ca
RI Kumar, Aloke/A-9122-2011
FU Canada Excellence Research Chair (CERC) program
FX The authors would like to thank Professor Howard Ceri from the
Biological Sciences Department of the University of Calgary for
providing bacterial strains. Research conducted at University of Alberta
and authors also acknowledge financial support from the Canada
Excellence Research Chair (CERC) program.
NR 30
TC 27
Z9 27
U1 1
U2 39
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1473-0197
J9 LAB CHIP
JI Lab Chip
PY 2012
VL 12
IS 24
BP 5133
EP 5137
DI 10.1039/c2lc40815e
PG 5
WC Biochemical Research Methods; Chemistry, Multidisciplinary; Nanoscience
& Nanotechnology
SC Biochemistry & Molecular Biology; Chemistry; Science & Technology -
Other Topics
GA 049EJ
UT WOS:000311964700002
PM 23123600
ER
PT J
AU Lewis, LJ
Perez, D
AF Lewis, Laurent J.
Perez, Danny
BE Yang, G
TI Computer Models of Laser Ablation in Liquids
SO LASER ABLATION IN LIQUIDS: PRINCIPLES AND APPLICATIONS IN THE
PREPARATION OF NANOMATERIALS
LA English
DT Article; Book Chapter
ID FLIGHT MASS-SPECTROSCOPY; PHASE-EXPLOSION; MOLECULAR-DYNAMICS;
FEMTOSECOND PULSES; SOLID INTERACTION; ORGANIC-SOLIDS; PICOSECOND;
MECHANISMS; SIMULATION; SILICON
AB Computer simulations have provided a wealth of information on the physics of ablation, notably in the case of solids in vacuum or in a gaseous environment. We present a simple two-dimensional molecular-dynamics model that we have developed to study-at a generic level-the ablation of materials by intense, ultrashort laser pulses, and summarize the basic principles that underlie thermal ablation in "dry" materials, insisting on the importance of considering the thermodynamics pathways in order to understand the phenomenon. We move on to discuss the corresponding case of "wet" materials, that is materials that are immersed in a liquid. Because it confines the solid and slows down expansion, the liquid affects ablation significantly, notably the relative efficiency of the various ablation mechanisms, leading in particular to the complete inhibition of phase explosion at lower fluences, reduced ablation yields, and important changes in the composition of the plume. As a consequence, at fluences above the ablation threshold, the size of the ejected nanoclusters is smaller in the presence of the liquid.
C1 [Lewis, Laurent J.] Univ Montreal, Dept Phys & Regroupement Quebecois Mat Pointe RQM, Montreal, PQ H3C 3J7, Canada.
[Perez, Danny] Los Alamos Natl Lab, Theoret Div T1, Los Alamos, NM 87545 USA.
RP Lewis, LJ (reprint author), Univ Montreal, Dept Phys & Regroupement Quebecois Mat Pointe RQM, CP 6128,Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada.
EM Laurent.Lewis@UMontreal.CA; danny_perez@lanl.gov
NR 76
TC 3
Z9 3
U1 0
U2 1
PU PAN STANFORD PUBLISHING PTE LTD
PI SINGAPORE
PA PENTHOUSE LEVEL, SUNTEC TOWER 3, 8 TEMASEK BLVD, SINGAPORE, 038988,
SINGAPORE
BN 978-981-4241-52-6
PY 2012
BP 111
EP 155
D2 10.1201/b11623
PG 45
WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary;
Physics, Applied
SC Science & Technology - Other Topics; Materials Science; Physics
GA BCX26
UT WOS:000311821900003
ER
PT S
AU Dabney, MS
Mahn, AH
van Hest, MFAM
Ginley, DS
AF Dabney, M. S.
Mahn, A. H.
van Hest, M. F. A. M.
Ginley, D. S.
BE Reutzel, EW
TI Laser Nucleation and Solid Phase Crystallization of a-Si:H
SO LASER MATERIAL PROCESSING FOR SOLAR ENERGY
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Laser Material Processing for Solar Energy
CY AUG 15-16, 2012
CL San Diego, CA
SP SPIE
DE Laser; Nucleation; Stress; Crystallization; Silicon; Film
ID METAL-INDUCED CRYSTALLIZATION; POLYCRYSTALLINE SILICON FILMS;
AMORPHOUS-SILICON; GRAIN-GROWTH; EXCIMER-LASER; RAMAN-SPECTROSCOPY;
THIN-FILMS; H FILMS; TEMPERATURE; DEPOSITION
AB The ability to grow large-area, large-grained polycrystalline silicon on inexpensive substrates is becoming increasingly important for photovoltaic (PV) devices. With large-grained (grain size > 10 mu m) 10 mu m thick films it is possible with light trapping to achieve PV efficiencies exceeding 15%. If crystallites could be nucleated and grown for longer times before native nucleation occurs, then potentially these much larger grain, thin film silicon material could be produced. The interaction of sub-crystallization threshold laser fluence with hydrogenated amorphous silicon (a-Si:H) has been demonstrated on a macroscopic scale to shorten the incubation time in subsequently thermally annealed films. Further examination of crystallite laser nucleation, found that nucleation was suppressed around PECVD a-Si:H thin film(50-100nm) sample edges, and scratches, in addition to laser-ablated areas, extending as much as 100-200 mu m laterally from these features. Optical microscopy and stepwise high temperature thermal annealing were used to investigate this behavior for the a-Si: H films deposited on glass substrates. The nucleation rates were measured in the treated and untreated regions. The data suggests that these features (edges, scratches, and laser ablated areas) provide stress relief by interrupting the surface connectivity. We confirm the existence of stress and stress relief by mu-Raman measurements of the crystallite transverse optical peak position relative to that of c-Si. PECVD films were annealed at temperatures between 540-600C, to enable a determination of r(n) at each anneal temperature. The temperature dependent measurements enabled the determination of the nucleation rate activation energies (E-A), and how they are affected by film stress.
C1 [Dabney, M. S.; Mahn, A. H.; van Hest, M. F. A. M.; Ginley, D. S.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Dabney, MS (reprint author), Natl Renewable Energy Lab, 12313 Denver W Pkwy, Golden, CO 80401 USA.
NR 47
TC 0
Z9 0
U1 0
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9190-9
J9 PROC SPIE
PY 2012
VL 8473
AR 84730E
DI 10.1117/12.928943
PG 10
WC Energy & Fuels; Optics; Physics, Applied
SC Energy & Fuels; Optics; Physics
GA BCY47
UT WOS:000312032300011
ER
PT S
AU Wagner, A
Donaldson, L
Ralph, J
AF Wagner, Armin
Donaldson, Lloyd
Ralph, John
BE Jouann, L
Lapierre, C
TI Lignification and Lignin Manipulations in Conifers
SO LIGNINS: BIOSYNTHESIS, BIODEGRADATION AND BIOENGINEERING
SE Advances in Botanical Research
LA English
DT Review; Book Chapter
ID CINNAMYL-ALCOHOL-DEHYDROGENASE; RADIATA D DON; SPRUCE PICEA-ABIES;
PLANT-CELL WALLS; ALFALFA MEDICAGO-SATIVA; A O-METHYLTRANSFERASE; MUTANT
PINE DEFICIENT; COA REDUCTASE CCR; COMPRESSION WOOD; LOBLOLLY-PINE
AB Lignification is integral to wood formation and has been studied in great detail in conifers for decades. This effort has resulted in detailed knowledge about the chemical composition, structure and content of lignin in different cell and wood types. Lignin distribution and biochemical composition has been resolved at an ultra-structural level, and structural models for conifer lignin have been established. Recent years have seen significant advances in our molecular-level understanding of lignification, and in conifer monolignol biosynthesis. The majority of the genes involved have been identified and the molecular functions of several have been experimentally verified. Suppression of lignin-related genes confirmed that lignin is vital for plant fitness and vascular integrity in conifers and established that conifers do not tolerate substantial reductions in lignin content. Significant gaps in our understanding of conifer lignification nevertheless remain. Aspects of lignification about which we still know relatively little include: the regulatory cascades that trigger lignification, metabolic connections between monolignol biosynthesis and other metabolic processes, the cellular biology of monolignol biosynthesis, the transport of monolignols to the apoplast, the role of monolignol glucosides in lignification, the process of lignin initiation, and the interaction of lignin with other cell wall polymers such as non-cellulosic polysaccharides. These significant gaps in our understanding provide ample opportunity for new and exciting discoveries on lignification in conifers.
C1 [Wagner, Armin; Donaldson, Lloyd] Scion, Rotorua, New Zealand.
[Ralph, John] Univ Wisconsin, Dept Biochem, Madison, WI 53705 USA.
[Ralph, John] US DOE, Great Lakes Bioenergy Res Ctr, Madison, WI USA.
[Ralph, John] Wisconsin Bioenergy Initiat, Madison, WI USA.
RP Wagner, A (reprint author), Scion, Private Bag 3020, Rotorua, New Zealand.
EM armin.wagner@scionresearch.com
NR 160
TC 15
Z9 15
U1 6
U2 68
PU ELSEVIER ACADEMIC PRESS INC
PI SAN DIEGO
PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 USA
SN 0065-2296
BN 978-0-12-416023-1
J9 ADV BOT RES
JI Adv. Bot. Res.
PY 2012
VL 61
BP 37
EP 76
DI 10.1016/B978-0-12-416023-1.00002-1
PG 40
WC Plant Sciences
SC Plant Sciences
GA BBU26
UT WOS:000308191200003
ER
PT S
AU Mendelsberg, RJ
AF Mendelsberg, Rueben J.
BE Cabrini, S
Mokari, T
TI Localized surface plasmon resonance of degenerate semiconducting
nanocrystal ensembles with various shape distributions
SO NANOPHOTONIC MATERIALS IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Nanophotonic Materials IX
CY AUG 15-16, 2012
CL San Diego, CA
SP SPIE
DE localized surface plasmons; semiconductor nanocrystals; Drude Model;
Mie-Gans Theory; absorbance
ID SILICON NANOCRYSTALS; OXIDE NANOCRYSTALS; RAMAN-SCATTERING; QUANTUM
DOTS; ABSORPTION; GOLD; DEVICES; SILVER; FILMS
AB Nanocrystals of degenerate semiconductors come in a variety of shapes, which have profound influence on the localized surface plasmons which are supported. Ensembles of such nanocrystals are never perfect and will always show a distribution of shapes. By embedding the Drude model into Mie scattering theory, the effect of the shape inhomogeneity on the absorbance spectrum of a nanocrystal ensemble can be approximated for a few common cases such as nanorods and nanodiscs as well as general ellipsoids. Using various distributions of aspect ratios, broadening and shifting of the various plasmonic absorption peaks is observed for nanorod and nanodisc ensembles. Similar behavior is also observed for ensembles of nearly spherical nanocrystals, which emphasizes the importance of accounting for nanocrystal shape inhomogeneity when investigating broadening mechanisms of nanocrystal plasmonic absorbance.
C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94536 USA.
RP Mendelsberg, RJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94536 USA.
EM rmendelsberg@lbl.gov
NR 41
TC 0
Z9 0
U1 3
U2 21
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9173-2
J9 PROC SPIE
PY 2012
VL 8456
AR 845602
DI 10.1117/12.931096
PG 11
WC Nanoscience & Nanotechnology; Optics
SC Science & Technology - Other Topics; Optics
GA BCY17
UT WOS:000311963400001
ER
PT S
AU Ohodnicki, PR
Brown, TD
Buric, MP
Baltrus, JP
Chorpening, B
AF Ohodnicki, Paul R., Jr.
Brown, Thomas D.
Buric, Michael P.
Baltrus, John P.
Chorpening, B.
BE Cabrini, S
Mokari, T
TI Plasmon Resonance at Extreme Temperatures in Sputtered Au Nanoparticle
Incorporated TiO2 Films
SO NANOPHOTONIC MATERIALS IX
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Nanophotonic Materials IX
CY AUG 15-16, 2012
CL San Diego, CA
SP SPIE
DE TiO2; Au; surface plasmon resonance; high temperature; optical gas
sensing
ID METAL-OXIDE-FILMS; GAS SENSORS; THIN-FILMS; SENSITIVITY; NANOCOMPOSITES;
DEPENDENCE; CO
AB Sensor technologies that can operate under extreme conditions including high temperatures, high pressures, highly reducing and oxidizing environments, and corrosive gases are needed for process monitoring and control in advanced fossil energy applications. Au nanoparticle incorporated metal oxide thin films have recently been demonstrated to show a useful optical response to changing ambient gases at high temperatures as a result of modifications to the localized surface plasmon resonance (LSPR) of the Au nanoparticles. Au nanoparticle incorporated TiO2 films were prepared through sputter deposition techniques followed by high temperature oxidation treatments. Upon exposure to a 4% H-2/N-2 gas atmosphere at elevated temperatures, a shift of the absorption resonance associated with Au nanoparticles to shorter wavelengths is observed, as demonstrated in the literature previously. In this work, we also demonstrate that there is a shift of similar magnitude in the scattering resonance associated with Au. The LSPR absorption peak was monitored as a function of temperature up to 850 degrees C demonstrating a broadening and a decrease in the maximum peak absorptance. Calculations performed in the quasi-static approximation are also presented to explain observed changes in LSPR as a function of temperature and to illustrate the effects on sensitivity of Au - based LSPR sensor materials for extreme temperature applications.
C1 [Ohodnicki, Paul R., Jr.; Brown, Thomas D.; Baltrus, John P.] Natl Energy Technol Lab, Chem & Surface Sci Div, Pittsburgh, PA 15236 USA.
[Buric, Michael P.; Chorpening, B.] Natl Energy Technol Lab, Energy Syst Dynam Div, Morgantown, WV 26507 USA.
RP Ohodnicki, PR (reprint author), Natl Energy Technol Lab, Chem & Surface Sci Div, Pittsburgh, PA 15236 USA.
EM Paul.Ohodnicki@NETL.DOE.GOV
FU U.S. DOE Advanced Research / Cross-cutting Technologies program at the
National Energy Technology Laboratory; agency of the United States
Government
FX This work was funded by the U.S. DOE Advanced Research / Cross-cutting
Technologies program at the National Energy Technology Laboratory
managed by Patricia Rawls ( project manager) and Robert Romanosky (
technology manager). This report was prepared as an account of work
sponsored by an agency of the United States Government. Neither the
United States Government nor any agency thereof, nor any of their
employees, makes any warranty, express or implied, or assumes any legal
liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process disclosed,
or represents that its use would not infringe privately owned rights.
Reference herein to any specific commercial product, process, or service
by trade name, trademark, manufacturer, or otherwise does not
necessarily constitute or imply its endorsement, recommendation, or
favoring by the United States Government or any agency thereof. The
views and opinions of authors expressed herein do not necessarily state
or reflect those of the United States Government or any agency thereof.
NR 26
TC 5
Z9 5
U1 2
U2 11
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9173-2
J9 PROC SPIE
PY 2012
VL 8456
AR 845608
DI 10.1117/12.930058
PG 12
WC Nanoscience & Nanotechnology; Optics
SC Science & Technology - Other Topics; Optics
GA BCY17
UT WOS:000311963400004
ER
PT S
AU Padmaperuma, AB
Fernandez, CA
AF Padmaperuma, Asanga B.
Fernandez, Carlos A.
BE So, F
Adachi, C
TI Heteroleptic cyclometalated Ir(III) complexes with charge transporting
groups: A theoretical study
SO ORGANIC LIGHT EMITTING MATERIALS AND DEVICES XVI
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Organic Light Emitting Materials and Devices XVI
CY AUG 12-15, 2012
CL San Diego, CA
SP SPIE
DE Organic light emitting devices; rational design; organometallic iridium
phosphorescent; DFT; TD-DFT
ID LIGHT-EMITTING-DIODES; IRIDIUM; DENDRIMERS; EFFICIENCY
AB Efficient and stable high energy organic light emitting devices (OLEDs) are a vital component of new generation general illumination solutions. However, large charge imbalances in the emissive layer of OLEDs lead to charge accumulation and subsequent side reactions which lowers the device efficiency and dramatically shortens operational lifetime. Radical changes in the way emitter materials are designed are needed to address this problem. Conventional approaches have only focused on color tuning; however, multi-functional emitter materials are needed to assist the transport of charge in the emissive layer. We have designed new organometallic iridium phosphorescent materials with bipolar charge transport properties to be used in high energy OLEDs and white light configurations. Theoretical data presented here indicates that these new emitter complexes would improve charge transport in the emissive layer.
C1 [Padmaperuma, Asanga B.; Fernandez, Carlos A.] Pacific NW Natl Lab, Appl Mat Sci Grp, Energy Proc & Mat Div, Richland, WA 99352 USA.
RP Padmaperuma, AB (reprint author), Pacific NW Natl Lab, Appl Mat Sci Grp, Energy Proc & Mat Div, Richland, WA 99352 USA.
EM asanga.padmaperuma@pnnl.gov
NR 12
TC 0
Z9 0
U1 1
U2 1
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9193-0
J9 PROC SPIE
PY 2012
VL 8476
AR 84760A
DI 10.1117/12.949510
PG 6
WC Materials Science, Multidisciplinary; Optics
SC Materials Science; Optics
GA BCY45
UT WOS:000312027600003
ER
PT S
AU Hernandez-Sanchez, BA
Boyle, TJ
Villone, J
Yang, P
Kinnan, M
Hoppe, S
Thoma, S
Hattar, K
Doty, FP
AF Hernandez-Sanchez, Bernadette A.
Boyle, Timothy J.
Villone, Janelle
Yang, Pin
Kinnan, Mark
Hoppe, Sarah
Thoma, Steve
Hattar, Khalid
Doty, F. Patrick
BE Grim, GP
Barber, HB
TI Size Effects on the Properties of High Z Scintillator Materials
SO PENETRATING RADIATION SYSTEMS AND APPLICATIONS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Penetrating Radiation Systems and Applications XIII
CY AUG 13-15, 2012
CL San Diego, CA
SP SPIE
DE Nanoscintillators; Metal Tungstates MWO4 (M = Ca, Pb, Cd); Ion Beam
Induced Luminesce (IBIL); Photoluminescence (PL); Cathodoluminescence
(CL)
AB Particle size effects of nano- and polycrystalline metal tungstate MWO4 (M = Ca, Pb, Cd) scintillators were examined through a comparison of commercially available powders and solution precipitation prepared nanoscaled materials. The scintillation behaviors of nanoparticles and commercial powders were examined with ion beam induced luminescence (IBIL), photoluminescence (PL), and cathodoluminescence (CL) spectroscopy techniques. For commercial microns sized MWO4 powders, spectral emission differences between CL and PL were only observed for Cd and Pb tungstates when compared to reported single crystals. The IBIL wavelength emissions also differed from the commercial MWO4 CL and PL data and were red shifted by 28 and 14 nm for CaWO4 and CdWO4; respectively, while PbWO4 had no significant change. IBIL analysis on CaWO4 nanoparticles produced a 40 nm blue shift from the commercial powder emission. These preliminary results suggest that both size and cation Z may affect the emission properties of the MWO4 scintillators.
C1 [Hernandez-Sanchez, Bernadette A.; Boyle, Timothy J.; Villone, Janelle; Yang, Pin; Kinnan, Mark; Hoppe, Sarah; Thoma, Steve; Hattar, Khalid] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Doty, F. Patrick] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Hernandez-Sanchez, BA (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM baherna@sandia.gov
FU DOE and the Laboratory Directed Research Development (LDRD); U.S.
Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX This work was partially supported by DOE and the Laboratory Directed
Research Development (LDRD) Program. Sandia National Laboratories is a
multi- program laboratory managed and operated by Sandia Corporation, a
wholly owned subsidiary of Lockheed Martin Corporation, for the U.S.
Department of Energy's National Nuclear Security Administration under
contract DE-AC04-94AL85000.
NR 8
TC 0
Z9 0
U1 2
U2 9
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9226-5
J9 PROC SPIE
PY 2012
VL 8509
AR 85090G
DI 10.1117/12.930163
PG 6
WC Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BCZ45
UT WOS:000312165500009
ER
PT S
AU Hoppe, SM
Hattar, K
Boyle, TJ
Villone, J
Yang, P
Doty, FP
Hernandez-Sanchez, BA
AF Hoppe, Sarah M.
Hattar, Khalid
Boyle, Timothy J.
Villone, Janelle
Yang, Pin
Doty, F. Patrick
Hernandez-Sanchez, Bernadette A.
BE Grim, GP
Barber, HB
TI Application of in-situ ion irradiation TEM and 4D tomography to advanced
scintillator materials
SO PENETRATING RADIATION SYSTEMS AND APPLICATIONS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Penetrating Radiation Systems and Applications XIII
CY AUG 13-15, 2012
CL San Diego, CA
SP SPIE
DE TEM; in-situ ion irradiation; scintillator; cadmium tungstate;
nanomaterials
ID CADMIUM TUNGSTATE; VISUALIZATION
AB Scintillating nanomaterials are being investigated as replacements for fragile, difficult to synthesize single crystal radiation detectors, but greater insight into their structural stability when exposed to extreme environments is needed to determine long-term performance. An initial study using high-Z cadmium tungstate (CdWO4) nanorods and an in-situ ion irradiation transmission electron microscope ((ITEM)-T-3) was performed to determine the feasibility of these extreme environment experiments. The (ITEM)-T-3 presents a unique capability that permits the real time characterization of nanostructures exposed to various types of ion irradiation. In this work, we investigated the structural evolution of CdWO4 nanorods exposed to 50 nA of 3 MeV copper (3+) ions. During the first several minutes of exposure, the nanorods underwent significant structural evolution. This appears to occur in two steps where the nanorods are first segmented into smaller sections followed by the sintering of adjacent particles into larger nanostructures. An additional study combined in-situ ion irradiation with electron tomography to record tilt series after each irradiation dose; which were then processed into 3D reconstructions to show radiation damage to the material over time. Analyses to understand the mechanisms and structure-property relationships involved are ongoing.
C1 [Hoppe, Sarah M.; Hattar, Khalid; Boyle, Timothy J.; Villone, Janelle; Yang, Pin; Hernandez-Sanchez, Bernadette A.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Doty, F. Patrick] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Hattar, K (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
EM khattar@sandia.gov
FU DOE, Office of Science, Office of Basic Energy Sciences; U.S. Department
of Energy's National Nuclear Security Administration [AC04- 94AL85000]
FX This work was partially supported by DOE, Office of Science, Office of
Basic Energy Sciences. Sandia National Laboratories is a multi- program
laboratory managed and operated by Sandia Corporation, a wholly owned
subsidiary of Lockheed Martin Corporation, for the U.S. Department of
Energy's National Nuclear Security Administration under contract DE-
AC04- 94AL85000.
NR 14
TC 0
Z9 0
U1 1
U2 8
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9226-5
J9 PROC SPIE
PY 2012
VL 8509
AR 85090F
DI 10.1117/12.929933
PG 7
WC Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BCZ45
UT WOS:000312165500008
ER
PT S
AU Mariam, FG
Merrill, FE
Espinoza, CJ
Heidemann, JA
Hollander, BJ
Kwiatkowski, KK
Lopez, JD
Lopez, RP
Marr-Lyon, M
McNeil, WV
Morley, DJ
Morris, C
Murray, MM
Nedrow, P
Perry, JO
Saunders, A
Tainter, AM
Trouw, FR
Tupa, D
AF Mariam, F. G.
Merrill, F. E.
Espinoza, C. J.
Heidemann, J. A.
Hollander, B. J.
Kwiatkowski, K. K.
Lopez, J. D.
Lopez, R. P.
Marr-Lyon, M.
McNeil, W. V.
Morley, D. J.
Morris, C.
Murray, M. M.
Nedrow, P.
Perry, J. O.
Saunders, A.
Tainter, A. M.
Trouw, F. R.
Tupa, D.
BE Grim, GP
Barber, HB
TI Proton radiography: its uses and resolution scaling
SO PENETRATING RADIATION SYSTEMS AND APPLICATIONS XIII
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Penetrating Radiation Systems and Applications XIII
CY AUG 13-15, 2012
CL San Diego, CA
SP SPIE
DE proton radiography; charged particle radiography; flash radiography;
tomography
AB Modern proton radiography (pRad), which was invented at the Los Alamos National Laboratory (LANL), is especially well suited for investigation of dense materials. When compared to x-radiography, the mean free path of protons is much longer resulting in near-optimum radiographic transmission. The proton radiography facility at LANL which utilizes the 800 MeV proton beam at the Los Alamos Neutron Sciences Center (LANSCE), is a user facility mainly serving the weapons community. The temporal structure of the beam coupled with high quantum efficiency multi-frame cameras has enabled the acquisition of up to 41 radiographic frames over the duration of dynamic processes typically lasting a few tens of microseconds. Sample results from the pRad facility at LANL are presented. The position resolution of proton radiography can be improved both by using higher energy proton beams and by using magnifying lenses. We present theoretical studies for both improvements.
C1 [Mariam, F. G.; Merrill, F. E.; Espinoza, C. J.; Heidemann, J. A.; Hollander, B. J.; Kwiatkowski, K. K.; Lopez, J. D.; Lopez, R. P.; Marr-Lyon, M.; McNeil, W. V.; Morley, D. J.; Morris, C.; Murray, M. M.; Nedrow, P.; Perry, J. O.; Saunders, A.; Tainter, A. M.; Trouw, F. R.; Tupa, D.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA.
RP Mariam, FG (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA.
OI Hollander, Brian/0000-0003-1836-2424; Morris,
Christopher/0000-0003-2141-0255; Perry, John/0000-0003-3639-5617; Tupa,
Dale/0000-0002-6265-5016; Merrill, Frank/0000-0003-0603-735X
NR 12
TC 0
Z9 1
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9226-5
J9 PROC SPIE
PY 2012
VL 8509
AR 850904
DI 10.1117/12.930569
PG 12
WC Optics; Radiology, Nuclear Medicine & Medical Imaging
SC Optics; Radiology, Nuclear Medicine & Medical Imaging
GA BCZ45
UT WOS:000312165500001
ER
PT J
AU Assary, RS
Kim, T
Low, JJ
Greeley, J
Curtiss, LA
AF Assary, Rajeev S.
Kim, Taejin
Low, John J.
Greeley, Jeff
Curtiss, Larry A.
TI Glucose and fructose to platform chemicals: understanding the
thermodynamic landscapes of acid-catalysed reactions using high-level ab
initio methods
SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS
LA English
DT Article
ID FURFURYL ALCOHOL POLYMERIZATION; BETA-D-GLUCOSE; TRANSPORTATION FUELS;
AQUEOUS-SOLUTION; LEVULINIC ACID; FREE-ENERGY; MOLECULAR-DYNAMICS;
CONVERSION; BIOMASS; DEHYDRATION
AB Molecular level understanding of acid-catalysed conversion of sugar molecules to platform chemicals such as hydroxy-methyl furfural (HMF), furfuryl alcohol (FAL), and levulinic acid (LA) is essential for efficient biomass conversion. In this paper, the high-level G4MP2 method along with the SMD solvation model is employed to understand detailed reaction energetics of the acid-catalysed decomposition of glucose and fructose to HMF. Based on protonation free energies of various hydroxyl groups of the sugar molecule, the relative reactivity of gluco-pyranose, fructo-pyranose and fructo-furanose are predicted. Calculations suggest that, in addition to the protonated intermediates, a solvent assisted dehydration of one of the fructo-furanosyl intermediates is a competing mechanism, indicating the possibility of multiple reaction pathways for fructose to HMF conversion in aqueous acidic medium. Two reaction pathways were explored to understand the thermodynamics of glucose to HMF; the first one is initiated by the protonation of a C2-OH group and the second one through an enolate intermediate involving acyclic intermediates. Additionally, a pathway is proposed for the formation of furfuryl alcohol from glucose initiated by the protonation of a C2-OH position, which includes a C-C bond cleavage, and the formation of formic acid. The detailed free energy landscapes predicted in this study can be used as benchmarks for further exploring the sugar decomposition reactions, prediction of possible intermediates, and finally designing improved catalysts for biomass conversion chemistry in the future.
C1 [Assary, Rajeev S.; Curtiss, Larry A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA.
[Assary, Rajeev S.] Northwestern Univ, Evanston, IL 60208 USA.
[Kim, Taejin] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL USA.
[Low, John J.] Argonne Natl Labs, Argonne Leadership Comp Facil, Argonne, IL 60439 USA.
[Greeley, Jeff; Curtiss, Larry A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA.
RP Assary, RS (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM assary@anl.gov; curtiss@anl.gov
RI KIM, TAE JIN/M-7994-2014; Surendran Assary, Rajeev/E-6833-2012
OI KIM, TAE JIN/0000-0002-0096-303X; Surendran Assary,
Rajeev/0000-0002-9571-3307
FU Institute for Atom-efficient Chemical Transformations (IACT), an Energy
Frontier Research Center; U.S. Department of Energy, Office of Science,
and Office of Basic Energy Sciences; Office of Sciences of the U.S.
Department of Energy [DE-AC02-05CH11231]
FX This material is based upon work supported as part of the Institute for
Atom-efficient Chemical Transformations (IACT), an Energy Frontier
Research Center funded by the U.S. Department of Energy, Office of
Science, and Office of Basic Energy Sciences. We gratefully acknowledge
grants of computer time from EMSL, a national scientific user facility
located at Pacific Northwest National Laboratory, the ANL Laboratory
Computing Resource Center (LCRC), and the ANL Center for Nanoscale
Materials. This research used resources of the National Energy Research
Scientific Computing Center, which is supported by the Office of
Sciences of the U.S. Department of Energy under Contract No.
DE-AC02-05CH11231.
NR 48
TC 24
Z9 24
U1 4
U2 96
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1463-9076
J9 PHYS CHEM CHEM PHYS
JI Phys. Chem. Chem. Phys.
PY 2012
VL 14
IS 48
BP 16603
EP 16611
DI 10.1039/c2cp41842h
PG 9
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 045ZQ
UT WOS:000311735700012
PM 22932938
ER
PT J
AU Vidal, AB
Liu, P
AF Vidal, Alba B.
Liu, Ping
TI Density functional study of water-gas shift reaction on M3O3x/Cu(111)
SO PHYSICAL CHEMISTRY CHEMICAL PHYSICS
LA English
DT Article
ID INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET;
OXIDE CLUSTERS; ELECTRONIC-STRUCTURE; (TIO2)(N) N=1-4; SURFACES;
CATALYSTS; NANOPARTICLES; PHASE
AB Density functional theory (DFT) was employed to study the water dissociation and water-gas shift (WGS) reaction on a series of inverse model catalysts, M3O3x/Cu(111) (M = Mg, Ti, Zr, Mo, W; x = 1, 2, 3). It has been found that the WGS reaction on Cu can be facilitated by introducing various oxides to lower the barrier of water dissociation. Accordingly, the calculated reaction energy for water dissociation was used as a scaling descriptor to screen the WGS activity of oxide-Cu model catalysts. Our calculations show that the activity towards water dissociation decreases in a sequence: Mg3O3/Cu(111) > Zr3O6/Cu(111) > Ti3O6/Cu(111) > W3O9/Cu(111), Mo3O9/Cu(111). It seems that Mg3O3/Cu(111) is the best WGS catalyst among the systems studied here, being able to dissociate water with no barrier. During the process, both Cu and oxides participate in the reaction directly. The strong M3O3x-Cu interaction is able to tune the electronic structure of M3O3x and therefore the activity towards water dissociation. Further studies of the overall WGS reaction on Mg3O3/Cu(111) show that water dissociation may not be the key step to control the WGS reaction on Mg3O3/Cu(111) and the removal of H from Mg3O3 can be problematic. The strong interaction between H and O from Mg3O3 blocks the O sites for further water dissociation and therefore the WGS reaction. Our study observes a very different behavior of oxide clusters in such small size from the bigger ones supported on Cu(111) and provides new insight into the rational design of the WGS catalysts.
C1 [Vidal, Alba B.; Liu, Ping] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Vidal, Alba B.] IVIC, Ctr Quim, Caracas 1020 A, Venezuela.
RP Liu, P (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM pingliu3@bnl.gov
FU US Department of Energy, Division of Chemical Sciences
[DE-AC02-98CH10886]
FX This research was carried out at Brookhaven National Laboratory under
contract DE-AC02-98CH10886 with the US Department of Energy, Division of
Chemical Sciences. The DFT calculations were carried out using the
computing facilities at the Center for Functional Nanomaterials at
Brookhaven National Laboratory and National Energy Research Scientific
Computing (NERSC) Center.
NR 52
TC 16
Z9 16
U1 3
U2 48
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1463-9076
EI 1463-9084
J9 PHYS CHEM CHEM PHYS
JI Phys. Chem. Chem. Phys.
PY 2012
VL 14
IS 48
BP 16626
EP 16632
DI 10.1039/c2cp42091k
PG 7
WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical
SC Chemistry; Physics
GA 045ZQ
UT WOS:000311735700015
PM 22955873
ER
PT J
AU Kim, N
Rousseau, A
Rask, E
AF Kim, Namwook
Rousseau, Aymeric
Rask, Eric
TI Vehicle-level control analysis of 2010 Toyota Prius based on test data
SO PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF
AUTOMOBILE ENGINEERING
LA English
DT Article
DE Supervisory control; vehicle testing; simulation and modeling; Prius;
hybrid electric vehicles; Autonomie
ID BATTERIES
AB The Prius, a power-split hybrid electric vehicle developed by Toyota, has been the top-selling vehicle in the United States hybrid electric vehicle market for the last decade. The transmission system of the vehicle is a frequent theme of study for hybrid electric vehicles. However, the control concept of the vehicle is not well known, since analyzing control behaviors requires well-designed facilities to obtain testing results and well-defined processes to analyze the obtained results. Argonne National Laboratory has these resources and capabilities. In addition, Argonne has produced a reliable simulation tool, Autonomie, by which a vehicle model for the 2010 Prius is developed on the basis of the analyzed results, and it is validated with the results of testing. The developed model demonstrates that results of vehicle performance from simulation are close to those of from real-world tests-within 5%. The main focus of this study is to provide information about the supervisory control for the 2010 Prius, so that researchers can reproduce the real-world behavior of the vehicle through simulations. The analyzed control ideas based on the testing results will be very helpful in terms of understanding the control behavior of the vehicle, and the information resulting from this study is useful to develop the controller for the vehicle at a simulation level.
C1 [Kim, Namwook; Rousseau, Aymeric; Rask, Eric] Argonne Natl Lab, Lemont, IL USA.
RP Kim, N (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Lemont, IL USA.
EM nakim@anl.gov
FU US Department of Energy's Vehicle Technology Office; Argonne, a US
Department of Energy Office of Science laboratory [DE-AC02-06CH11357]
FX This work was supported by the US Department of Energy's Vehicle
Technology Office under the direction of David Anderson and Lee Slezak.
The submitted manuscript has been created by UChicago Argonne, LLC,
Operator of Argonne National Laboratory ("Argonne"). Argonne, a US
Department of Energy Office of Science laboratory, is operated under
Contract No. DE-AC02-06CH11357. The US Government retains for itself,
and others acting on its behalf, a paid-up nonexclusive, irrevocable
worldwide license in said article to reproduce, prepare derivative
works, distribute copies to the public, and perform publicly and display
publicly, by or on behalf of the Government.
NR 16
TC 5
Z9 5
U1 4
U2 19
PU SAGE PUBLICATIONS LTD
PI LONDON
PA 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
SN 0954-4070
J9 P I MECH ENG D-J AUT
JI Proc. Inst. Mech. Eng. Part D-J. Automob. Eng.
PY 2012
VL 226
IS D11
BP 1483
EP 1494
DI 10.1177/0954407012445955
PG 12
WC Engineering, Mechanical; Transportation Science & Technology
SC Engineering; Transportation
GA 051TC
UT WOS:000312149300005
ER
PT S
AU Deline, C
Stokes, A
Silverman, TJ
Rummel, S
Jordan, D
Kurtz, S
AF Deline, Chris
Stokes, Adam
Silverman, Timothy J.
Rummel, Steve
Jordan, Dirk
Kurtz, Sarah
BE Dhere, NG
Wohlgemuth, JH
TI Electrical bias as an alternate method for reproducible measurement of
copper indium gallium diselenide (CIGS) photovoltaic
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Thin film; Photovoltaic; Transients; Metastability; CIGS; Forward Bias
ID SOLAR-CELLS; VOLTAGE; DEVICES
AB Light-to-dark metastable changes in thin-film photovoltaic (PV) modules can introduce uncertainty when measuring module performance on indoor flash testing equipment. This study describes a method to stabilize module performance through forward-bias current injection rather than light exposure. Measurements of five pairs of thin-film copper indium gallium diselenide (CIGS) PV modules indicate that forward-bias exposure maintained the PV modules at a stable condition (within 1%) while the unbiased modules degraded in performance by up to 12%. It was also found that modules exposed to forward bias exhibited stable performance within about 3% of their long-term outdoor exposed performance. This carrier-injection method provides a way to reduce uncertainty arising from fast transients in thin-film module performance between the time a module is removed from light exposure and when it is measured indoors, effectively simulating continuous light exposure by injecting minority carriers that behave much as photocarriers do. This investigation also provides insight into the initial light-induced transients of thin-film modules upon outdoor deployment.
C1 [Deline, Chris; Stokes, Adam; Silverman, Timothy J.; Rummel, Steve; Jordan, Dirk; Kurtz, Sarah] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Deline, C (reprint author), Natl Renewable Energy Lab, 16253 Denver W Blvd, Golden, CO 80401 USA.
RI Deline, Christopher/K-5998-2013
OI Deline, Christopher/0000-0002-9867-8930
NR 18
TC 2
Z9 2
U1 0
U2 6
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 84720G
DI 10.1117/12.929899
PG 12
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900005
ER
PT S
AU Lira-Cantu, M
Tanenbaum, DM
Norrman, K
Voroshazi, E
Hermenau, M
Lloyd, MT
Teran-Escobar, G
Galagan, Y
Zimmermann, B
Hosel, M
Dam, HF
Jorgensen, M
Gevorgyan, S
Lutsen, L
Vanderzande, D
Hoppe, H
Rosch, R
Wurfel, U
Andriessen, R
Rivaton, A
Uzunoglu, GY
Germack, D
Andreasen, B
Madsen, MV
Bundgaard, E
Krebs, FC
AF Lira-Cantu, Monica
Tanenbaum, David M.
Norrman, Kion
Voroshazi, Eszter
Hermenau, Martin
Lloyd, Matthew T.
Teran-Escobar, Gerardo
Galagan, Yulia
Zimmermann, Birger
Hosel, Markus
Dam, Henrik F.
Jorgensen, Mikkel
Gevorgyan, Suren
Lutsen, Laurence
Vanderzande, Dirk
Hoppe, Harald
Roesch, Roland
Wuerfel, Uli
Andriessen, Ronn
Rivaton, Agnes
Uzunoglu, Gulsah Y.
Germack, David
Andreasen, Birgitta
Madsen, Morten V.
Bundgaard, Eva
Krebs, Frederik C.
BE Dhere, NG
Wohlgemuth, JH
TI Combined Characterization Techniques to Understand the Stability of a
Variety of Organic Photovoltaic Devices - the ISOS-3 inter-laboratory
collaboration
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Polymer solar cells; organic solar cells; stability; metal electrodes;
polymer/metal interaction; degradation
ID POLY(3-HEXYLTHIOPHENE) P3HT; POLYTHIOPHENES; METALLIZATION
AB This work is part of the inter-laboratory collaboration to study the stability of seven distinct sets of state-of-the-art organic photovoltaic (OPVs) devices prepared by leading research laboratories. All devices have been shipped to and degraded at the Danish Technical University (DTU, formerly RISO-DTU) up to 1830 hours in accordance with established ISOS-3 protocols under defined illumination conditions. In this work we present a summary of the degradation response observed for the NREL sample, an inverted OPV of the type ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag/Al, under full sun stability test. The results reported from the combination of the different characterization techniques results in a proposed degradation mechanism. The final conclusion is that the failure of the photovoltaic response of the device with time under full sun solar simulation, is mainly due to the degradation of the electrodes and not to the active materials of the solar cell.
C1 [Lira-Cantu, Monica; Teran-Escobar, Gerardo] ETSE, Ctr Invest Nanociencia & Nanotecnol CIN2, CSIC, Lab Nanostruct Mat Photovolta Energy, Campus UAB,Edifici Q,2nd Floor, Barcelona, Spain.
[Tanenbaum, David M.; Norrman, Kion; Hosel, Markus; Dam, Henrik F.; Jorgensen, Mikkel; Gevorgyan, Suren; Andreasen, Birgitta; Madsen, Morten V.; Bundgaard, Eva; Krebs, Frederik C.] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark.
[Tanenbaum, David M.; Hermenau, Martin] Pomona Coll, Dept Phys & Astron, Claremont, CA 91711 USA.
[Voroshazi, Eszter] IMEC, B-3000 Louvain, Belgium.
[Voroshazi, Eszter] Katholieke Univ Leuven, B-3000 Louvain, Belgium.
[Norrman, Kion] Tech Univ Dresden, Inst Angew Photophys, Arbeitsgrp Organ Solarzellen OSOL, D-01062 Dresden, Germany.
[Lloyd, Matthew T.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Galagan, Yulia; Andriessen, Ronn] Holst Ctr, NL-5656 Eindhoven, Netherlands.
[Zimmermann, Birger] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany.
[Lutsen, Laurence] IMEC, IMOMEC Assoc Lab, B-3590 Diepenbeek, Belgium.
[Vanderzande, Dirk] Hasselt Univ, E-08193 Barcelona, Spain.
[Hoppe, Harald; Roesch, Roland] Tech Univ Ilmenau, Inst Phys, G-98693 Ilmenau, Germany.
[Uzunoglu, Gulsah Y.] TUBITAK Natl Metrol Inst UME, TR-41470 Gebze, Kocaeli, Turkey.
[Germack, David] Brookhaven Natl Lab, Condensed Matter Phys, Upton, NY 11973 USA.
[Rivaton, Agnes] Clermont Univ, Univ Blaise Pascal, LPMM, Clermont Ferrand, France.
[Rivaton, Agnes] CNRS, UMR6505, LPMM, F-63177 Clermont Ferrand, France.
RP Lira-Cantu, M (reprint author), ETSE, Ctr Invest Nanociencia & Nanotecnol CIN2, CSIC, Lab Nanostruct Mat Photovolta Energy, Campus UAB,Edifici Q,2nd Floor, Barcelona, Spain.
EM monica.lira@cin2.es
RI Vanderzande, Dirk JM/C-4757-2015; Andreasen, Birgitta/J-8101-2015;
OI Andreasen, Birgitta/0000-0002-3778-4035; Hosel,
Markus/0000-0001-7731-1964; Gevorgyan, Suren/0000-0001-9906-5485;
Lira-Cantu, Monica/0000-0002-3393-7436; Jorgensen,
Mikkel/0000-0002-7729-1497; Krebs, Frederik C/0000-0003-1148-4314;
Bundgaard, Eva/0000-0003-3244-5779
NR 7
TC 1
Z9 1
U1 0
U2 17
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 847203
DI 10.1117/12.929579
PG 6
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900001
ER
PT S
AU Miller, DC
Wohlgemuth, JH
AF Miller, David C.
Wohlgemuth, John H.
BE Dhere, NG
Wohlgemuth, JH
TI Examination of a Junction-Box Adhesion Test for Use in Photovoltaic
Module Qualification
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE reliability; accelerated stress testing; polymers
AB Engineering robust adhesion of the junction-box (j-box) is a hurdle typically encountered by photovoltaic (PV) module manufacturers during product development. There are historical incidences of adverse effects (e. g., fires) caused when the j-box/adhesive/module system has failed in the field. The addition of a weight to the j-box during the "damp heat" IEC qualification test is proposed to verify the basic robustness of its adhesion system. The details of the proposed test will be described, in addition to the preliminary results obtained using representative materials and components. The described discovery experiments examine moisture-cured silicone, foam tape, and hot-melt adhesives used in conjunction with PET or glass module "substrates." To be able to interpret the results, a set of material-level characterizations was performed, including thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. PV j-boxes were adhered to a substrate, loaded with a prescribed weight, and then placed inside an environmental chamber (at 85 degrees C, 85% relative humidity). Some systems did not remain attached through the discovery experiments. Observed failure modes include delamination (at the j-box/adhesive or adhesive/substrate interface) and phase change/creep. The results are discussed in the context of the application requirements, in addition to the plan for the formal experiment supporting the proposed modification to the qualification test.
C1 [Miller, David C.; Wohlgemuth, John H.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Miller, DC (reprint author), Natl Renewable Energy Lab, 15013 Denver W Pkwy, Golden, CO 80401 USA.
NR 19
TC 0
Z9 0
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 84720M
DI 10.1117/12.929793
PG 13
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900011
ER
PT S
AU Miller, DC
Gu, XH
Ji, L
Kelly, G
Nickel, N
Norum, P
Shioda, T
Tamizhmani, G
Wohlgemuth, JH
AF Miller, David C.
Gu, Xiaohong
Ji, Liang
Kelly, George
Nickel, Nichole
Norum, Paul
Shioda, Tsuyoshi
Tamizhmani, Govindasamy
Wohlgemuth, John H.
BE Dhere, NG
Wohlgemuth, JH
TI Examination of a Size-Change Test for Photovoltaic Encapsulation
Materials
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE material characteristics; quality assurance; shrinkage; polymer
AB We examine a proposed test standard that can be used to evaluate the maximum representative change in linear dimensions of sheet encapsulation products for photovoltaic modules (resulting from their thermal processing). The proposed protocol is part of a series of material-level tests being developed within Working Group 2 of the Technical Committee 82 of the International Electrotechnical Commission. The characterization tests are being developed to aid module design (by identifying the essential characteristics that should be communicated on a datasheet), quality control (via internal material acceptance and process control), and failure analysis. Discovery and interlaboratory experiments were used to select particular parameters for the size-change test. The choice of a sand substrate and aluminum carrier is explored relative to other options. The temperature uniformity of +/- 5 degrees C for the substrate was confirmed using thermography. Considerations related to the heating device (hot-plate or oven) are explored. The time duration of 5 minutes was identified from the time-series photographic characterization of material specimens (EVA, ionomer, PVB, TPO, and TPU). The test procedure was revised to account for observed effects of size and edges. The interlaboratory study identified typical size-change characteristics, and also verified the absolute reproducibility of +/- 5% between laboratories.
C1 [Miller, David C.; Wohlgemuth, John H.] Natl Renewable Energy Lab, 15013 Denver W Pkwy, Golden, CO 80401 USA.
[Gu, Xiaohong] NIST, Gaithersburg, MD 20899 USA.
[Ji, Liang] Underwriters Labs Inc UL, Northbrook, IL 60062 USA.
[Kelly, George] BP Solar USA, Frederick, MD 21703 USA.
[Nickel, Nichole] Dow Chem Co USA, Midland, MI 48674 USA.
[Norum, Paul] SolarWorld Ind Amer, Camarillo, CA 93012 USA.
[Shioda, Tsuyoshi] Mitsui Chem Inc, Chiba 2990265, Japan.
[Tamizhmani, Govindasamy] TUV Rheinland PTL, Tempe, AZ 85282 USA.
RP Miller, DC (reprint author), Natl Renewable Energy Lab, 15013 Denver W Pkwy, Golden, CO 80401 USA.
EM David.Miller@nrel.gov
FU U.S. Department of Energy [DE-AC36-08GO28308]; National Renewable Energy
Laboratory; National Institute of Standards and Technology of the U.S.
Department of Commerce
FX The authors are grateful to Dr. Michael Kempe, Dr. Sarah Kurtz, Dr. John
Pern, and Stephen Glick of the National Renewable Energy Laboratory for
their help/discussion with specimen fixturing, specimen handling,
experimental methods, and other subsequent analysis. This work was
supported by the U.S. Department of Energy under Contract No.
DE-AC36-08GO28308 with the National Renewable Energy Laboratory and the
National Institute of Standards and Technology of the U.S. Department of
Commerce..
NR 7
TC 0
Z9 0
U1 0
U2 2
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 84720T
DI 10.1117/12.929796
PG 12
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900014
ER
PT S
AU Pern, FJ
Yan, F
Zaunbrecher, K
To, B
Perkins, J
Noufi, R
AF Pern, F. J.
Yan, F.
Zaunbrecher, K.
To, B.
Perkins, J.
Noufi, R.
BE Dhere, NG
Wohlgemuth, JH
TI INVESTIGATION of some transparent metal oxides as damp heat protective
coating for CIGS solar cells
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Transparent metal oxide; Al-doped ZnO; amorphous InZnO; ZnSnO; ALD
Al2O3; CIGS solar cell; damp heat stability
AB We investigated the protective effectiveness of some transparent metal oxides (TMO) on CIGS solar cell coupons against damp heat (DH) exposure at 85 degrees C and 85% relative humidity (RH). Sputter-deposited bilayer ZnO (BZO) with up to 0.5 mu m Al-doped ZnO (AZO) layer and 0.2-mu m bilayer InZnO were used as "inherent" part of device structure on CdS/CIGS/Mo/SLG. Sputter-deposited 0.2-mu m ZnSnO and atomic layer deposited (ALD) 0.1-mu m Al2O3 were used as overcoat on typical BZO/CdS/CIGS/Mo/SLG solar cells. The results were all negative - all TMO-coated CIGS cells exhibited substantial degradation in DH. Combining the optical photographs, PL and EL imaging, SEM surface micromorphology, coupled with XRD, I-V and QE measurements, the causes of the device degradations are attributed to hydrolytic corrosion, flaking, micro-cracking, and delamination induced by the DH moisture. Mechanical stress and decrease in crystallinity (grain size effect) could be additional degrading factors for thicker AZO grown on CdS/CIGS.
C1 [Pern, F. J.; Yan, F.; Zaunbrecher, K.; To, B.; Perkins, J.; Noufi, R.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA.
RP Pern, FJ (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA.
EM john.pern@nrel.gov
NR 46
TC 1
Z9 1
U1 0
U2 17
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 84720I
DI 10.1117/12.930539
PG 15
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900007
ER
PT S
AU Pern, FJ
Noufi, R
AF Pern, F. J.
Noufi, R.
BE Dhere, NG
Wohlgemuth, JH
TI STABILITY of CIGS solar cells and component materials evaluated by a
step-stress accelerated degradation test method
SO RELIABILITY OF PHOTOVOLTAIC CELLS, MODULES, COMPONENTS, AND SYSTEMS V
SE Proceedings of SPIE
LA English
DT Proceedings Paper
CT Conference on Reliability of Photovoltaic Cells, Modules, Components,
and Systems V
CY AUG 13-16, 2012
CL San Diego, CA
SP SPIE
DE Step-stress accelerated degradation test (SSADT); encapsulated test
structure; CIGS solar cell; Mo on SLG; Al-doped ZnO window layer; AlNi
contact grid; damp heat stability; performance reliability
ID IMPEDANCE
AB A step-stress accelerated degradation testing (SSADT) method was employed for the first time to evaluate the stability of CuInGaSe2 (CIGS) solar cells and device component materials in four Al-framed test structures encapsulated with an edge sealant and three kinds of backsheet or moisture barrier film for moisture ingress control. The SSADT exposure used a 15 degrees C and then a 15% relative humidity (RH) increment step, beginning from 40 degrees C/40% RH (T/RH = 40/40) to 85 degrees C/70% RH (85/70) as of the moment. The voluminous data acquired and processed as of total DH = 3956 h with 85/70 = 704 h produced the following results. The best CIGS solar cells in sample Set-1 with a moisture-permeable TPT backsheet showed essentially identical I-V degradation trend regardless of the Al-doped ZnO (AZO) layer thickness ranging from standard 0.12 mu m to 0.50 mu m on the cells. No clear "stepwise" feature in the I-V parameter degradation curves corresponding to the SSADT T/RH/time profile was observed. Irregularity in I-V performance degradation pattern was observed with some cells showing early degradation at low T/RH < 55/55 and some showing large Voc, FF, and efficiency degradation due to increased series Rs (ohm-cm(2)) at T/RH = 70/70. Results of (electrochemical) impedance spectroscopy (ECIS) analysis indicate degradation of the CIGS solar cells corresponded to increased series resistance Rs (ohm) and degraded parallel (minority carrier diffusion/recombination) resistance Rp, capacitance C, overall time constant Rp*C, and "capacitor quality" factor (CPE-P), which were related to the cells' p-n junction properties. Heating at 85/70 appeared to benefit the CIGS solar cells as indicated by the largely recovered CPE-P factor. Device component materials, Mo on soda lime glass (Mo/SLG), bilayer ZnO (BZO), AlNi grid contact, and CdS/CIGS/Mo/SLG in test structures with TPT showed notable to significant degradation at T/RH = 70/70. At T/RH = 85/70, substantial blistering of BZO layers on CIGS cell pieces was observed that was not seen on BZO/glass, and a CdS/CIGS sample displayed a small darkening and then flaking feature. Additionally, standard AlNi grid contact was less stable than thin Ni grid contact at T/RH = 70/70. The edge sealant and moisture-blocking films were effective to block moisture ingress, as evidenced by the good stability of most CIGS solar cells and device components at T/RH = 85/70 for 704 h, and by preservation of the initial blue color on the RH indicator strips. The SSADT experiment is ongoing to be completed at T/RH = 85/85.
C1 [Pern, F. J.; Noufi, R.] Natl Renewable Energy Lab, Natl Ctr Photovolta, Golden, CO 80401 USA.
RP Pern, FJ (reprint author), Natl Renewable Energy Lab, Natl Ctr Photovolta, 1617 Cole Blvd, Golden, CO 80401 USA.
EM john.pern@nrel.gov
NR 37
TC 1
Z9 1
U1 0
U2 7
PU SPIE-INT SOC OPTICAL ENGINEERING
PI BELLINGHAM
PA 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
SN 0277-786X
BN 978-0-8194-9189-3
J9 PROC SPIE
PY 2012
VL 8472
AR 84720J
DI 10.1117/12.930541
PG 14
WC Energy & Fuels; Optics
SC Energy & Fuels; Optics
GA BCY48
UT WOS:000312032900008
ER
PT J
AU Formo, EV
Fu, WJ
Rondinone, AJ
Dai, S
AF Formo, Eric V.
Fu, Wujun
Rondinone, Adam J.
Dai, Sheng
TI Utilizing AgCl:Ag and AgCl mesostructures as solid precursors in the
formation of highly textured silver nanomaterials via electron-beam
induced decomposition
SO RSC ADVANCES
LA English
DT Article
ID INDUCED DEPOSITION; FACILE SYNTHESIS; AT-AGCL; NANOSTRUCTURES; EFFICIENT
AB Herein, we report on the facile synthesis of AgCl:Ag and AgCl mesocubes with edge lengths up to 500 nm. When these mesostructures were placed under an electron beam, localized heating resulted in the decomposition of the AgCl regions of the respective materials leading to the formation of highly textured silver nanostructures. Furthermore, we utilized the AgCl:Ag and AgCl mesocubes along with their respective silver analogs for use in surface enhanced Raman spectroscopy (SERS) applications.
C1 [Formo, Eric V.; Fu, Wujun; Rondinone, Adam J.; Dai, Sheng] Oak Ridge Natl Lab, Ctr Nanophase Mat, Oak Ridge, TN 37831 USA.
[Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA.
RP Formo, EV (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat, Oak Ridge, TN 37831 USA.
EM dais@ornl.gov
RI Rondinone, Adam/F-6489-2013; Dai, Sheng/K-8411-2015
OI Rondinone, Adam/0000-0003-0020-4612; Dai, Sheng/0000-0002-8046-3931
FU Oak Ridge National Laboratory; Division of Scientific User Facilities,
U.S. Department of Energy; E.V. Formo and W. Fu to the ORNL Postdoctoral
Research Associates Program; U.S. Department of Energy
[DE-AC05-00OR22725]
FX This research was conducted at the Center for Nanophase Materials
Sciences, which is sponsored by the Oak Ridge National Laboratory by the
Division of Scientific User Facilities, U.S. Department of Energy. The
research was supported in part by the appointment of E.V. Formo and W.
Fu to the ORNL Postdoctoral Research Associates Program, administered
jointly by ORNL and the Oak Ridge Associated Universities. The Oak Ridge
National Laboratory is managed by UT-Battelle, LLC for the U.S.
Department of Energy under contract DE-AC05-00OR22725.
NR 17
TC 5
Z9 5
U1 1
U2 24
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 25
BP 9359
EP 9361
DI 10.1039/c2ra21037a
PG 3
WC Chemistry, Multidisciplinary
SC Chemistry
GA 050NS
UT WOS:000312061000005
ER
PT J
AU Shi, F
Wang, P
Duan, YH
Link, D
Morreale, B
AF Shi, Fan
Wang, Ping
Duan, Yuhua
Link, Dirk
Morreale, Bryan
TI Recent developments in the production of liquid fuels via catalytic
conversion of microalgae: experiments and simulations
SO RSC ADVANCES
LA English
DT Review
ID FREE FATTY-ACIDS; SUPERCRITICAL-FLUID EXTRACTION; RESPONSE-SURFACE
METHODOLOGY; RENEWABLE ENERGY-PRODUCTION; ALGAE-DERIVED BIODIESEL;
HYDROTHERMAL LIQUEFACTION; BIO-OIL; STEARIC-ACID; NANNOCHLOROPSIS SP;
THERMOCHEMICAL LIQUEFACTION
AB Due to continuing high demand, depletion of non-renewable resources and increasing concerns about climate change, the use of fossil fuel-derived transportation fuels faces relentless challenges both from a world markets and an environmental perspective. The production of renewable transportation fuel from microalgae continues to attract much attention because of its potential for fast growth rates, high oil content, ability to grow in unconventional scenarios, and inherent carbon neutrality. Moreover, the use of microalgae would minimize "food versus fuel'' concerns associated with several biomass strategies, as microalgae do not compete with food crops in the food chain. This paper reviews the progress of recent research on the production of transportation fuels via homogeneous and heterogeneous catalytic conversions of microalgae. This review also describes the development of tools that may allow for a more fundamental understanding of catalyst selection and conversion processes using computational modelling. The catalytic conversion reaction pathways that have been investigated are fully discussed based on both experimental and theoretical approaches. Finally, this work makes several projections for the potential of various thermocatalytic pathways to produce alternative transportation fuels from algae, and identifies key areas where the authors feel that computational modelling should be directed to elucidate key information to optimize the process.
C1 [Shi, Fan; Wang, Ping; Duan, Yuhua; Link, Dirk; Morreale, Bryan] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
[Shi, Fan] URS Corp, Pittsburgh, PA 15219 USA.
RP Shi, F (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA.
EM Fan.shi@netl.doe.gov; Yuhua.duan@netl.doe.gov
RI Duan, Yuhua/D-6072-2011
OI Duan, Yuhua/0000-0001-7447-0142
FU National Energy Technology Laboratory's Office of Research and
Development [DE-FE-0004000]
FX This work was performed partially in support of the National Energy
Technology Laboratory's Office of Research and Development under
contract number DE-FE-0004000 with activity number 4000.5.660.251.003.
The authors thank Dr S. Chen and Dr D. C. Sorescu for reading part of
the manuscript, and appreciate proofreading by J. Fink and C. Wamsley
(internal technical writers).
NR 188
TC 15
Z9 15
U1 0
U2 88
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 26
BP 9727
EP 9747
DI 10.1039/c2ra21594b
PG 21
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051OL
UT WOS:000312136800002
ER
PT J
AU Cao, SL
Pu, YQ
Studer, M
Wyman, C
Ragauskas, AJ
AF Cao, Shilin
Pu, Yunqiao
Studer, Michael
Wyman, Charles
Ragauskas, Arthur J.
TI Chemical transformations of Populus trichocarpa during dilute acid
pretreatment
SO RSC ADVANCES
LA English
DT Article
ID CELLULOLYTIC ENZYME LIGNIN; MILLED WOOD LIGNIN; CELLULOSIC ETHANOL;
BUDDLEJA-DAVIDII; CORN STOVER; ASPEN WOOD; BIOFUELS; BIOMASS;
HYDROLYSIS; POPLAR
AB In this study, Populus trichocarpa was subjected to dilute acid pretreatment at varying pretreatment times. The three major components of lignocellulosic biomass, namely cellulose, hemicellulose and lignin, were isolated from the starting and dilute acid pretreated poplar. Gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) techniques were utilized to elucidate structural transformations of poplar during dilute acid pretreatment. The results demonstrated that the pretreatment dissolved hemicelluloses and disrupted structural features of lignin and polysaccharides. As revealed by NMR, the aryl-O-ether linkage (beta-O-4) of lignin was extensively cleaved and lignin repolymerization occurred during pretreatment. The lignin was also observed to have a decrease in S/G ratio and methoxyl group content and these changes were accompanied with an increase in condensed lignin. The dilute acid pretreatment resulted in a reduction in molecular weight of cellulose and hemicellulose, while no prominent change of molecular weight was observed for lignin. The polydispersity index of cellulose appeared to increase initially within a short time of pretreatment (0.3-1 min) and start to decrease with longer pretreatment time during the bulk phase of chain scission (5.4-26.8 min). The DA pretreatment demonstrated no significant impact on the crystalline index (CrI) of cellulose particularly within the short time range of pretreatments examined in this study, with CrI remaining almost unchanged during the pretreatment time of 0.3-5.4 min and a slight increase observed as the pretreatment time extended to 8.5 and 26.8 min.
C1 [Pu, Yunqiao; Ragauskas, Arthur J.] Georgia Inst Technol, Inst Paper Sci & Technol, Atlanta, GA 30332 USA.
[Studer, Michael; Wyman, Charles] Univ Calif Riverside, Ctr Environm Res & Technol, Bourns Coll Engn, Riverside, CA 92521 USA.
[Wyman, Charles] Univ Calif Riverside, Chem & Environm Engn Dept, Bourns Coll Engn, Riverside, CA 92521 USA.
[Cao, Shilin; Pu, Yunqiao; Studer, Michael; Wyman, Charles; Ragauskas, Arthur J.] BioEnergy Sci Ctr, Oak Ridge, TN USA.
[Cao, Shilin; Ragauskas, Arthur J.] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA.
RP Cao, SL (reprint author), Fujian Agr & Forestry Univ, Coll Mat Engn, Fuzhou, Peoples R China.
EM yunqiao.pu@ipst.gatech.edu; arthur.ragauskas@chemistry.gatech.edu
OI Pu, Yunqiao/0000-0003-2554-1447; Ragauskas, Arthur/0000-0002-3536-554X
FU BioEnergy Science Center (BESC); Office of Biological and Environmental
Research in the DOE Office of Science; DOE Office of Biological and
Environmental Research through the BioEnergy Science Center
[DE-AC05-00OR22725]
FX This work was supported and performed as part of the BioEnergy Science
Center (BESC). The BioEnergy Science Center is a U.S. Department of
Energy Bioenergy Research Center supported by the Office of Biological
and Environmental Research in the DOE Office of Science. The authors
would like to gratefully acknowledge the financial support from DOE
Office of Biological and Environmental Research through the BioEnergy
Science Center (DE-AC05-00OR22725).
NR 47
TC 41
Z9 42
U1 1
U2 30
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 29
BP 10925
EP 10936
DI 10.1039/c2ra22045h
PG 12
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051QS
UT WOS:000312142700023
ER
PT J
AU Chen, AQ
Bao, YW
Ge, XX
Shin, Y
Du, D
Lin, YH
AF Chen, Aiqiong
Bao, Yuanwu
Ge, Xiaoxiao
Shin, Yongsoon
Du, Dan
Lin, Yuehe
TI Magnetic particle-based immunoassay of phosphorylated p53 using protein
cage templated lead phosphate and carbon nanospheres for signal
amplification
SO RSC ADVANCES
LA English
DT Article
ID ELECTROCHEMICAL IMMUNOSENSOR; CANCER; NANOPARTICLES; ELECTRODES;
GRAPHENE; DISTINCT; POLYMER; ASSAY
AB Phosphorylated p53 at serine 15 (phospho-p53(15)) is a potential biomarker of gamma-radiation exposure. In this paper, we described a new magnetic particle (MP)-based electrochemical immunoassay of human phospho-p53(15) using carbon nanospheres (NS) and protein cage nanoparticles (PCN) for signal amplification. Greatly enhanced sensitivity was achieved for three reasons: 1) PCN and the p53(15) signal antibody (p53(15) Ab(2)) are linked to the carbon NS (PCN-p53(15) Ab(2)-NS) as a label; 2) PCN increases the amount of metal ions in the cavity of each apoferritin; 3) MPs capture a large amount of primary antibodies. Protein cage templated metallic phosphates, instead of enzymes, as multi-labels have the advantage of eliminating the addition of mediator or immunoreagents and, thus, makes the immunoassay system simpler. Subsequent stripping voltametric analysis, detected olead ions on a disposable screen-printed electrode. The response current was proportional to the phospho-p53(15) concentration in the range of 0.02 to 20 ng mL(-1) with a detection limit of 0.01 ng mL(-1), which was 30-fold lower than that of the ELISA measurement of phospho-p53(15). This method shows an acceptable stability and reproducibility and the assay results for phospho-p53(15)-spiked human serum presented good recovery rates.
C1 [Chen, Aiqiong; Ge, Xiaoxiao; Du, Dan] Cent China Normal Univ, Coll Chem, Key Lab Pesticides, Minist Educ, Wuhan 430079, Peoples R China.
[Bao, Yuanwu] Sundia MediTech Co, DMPK Dept, Shanghai 201203, Peoples R China.
[Shin, Yongsoon; Lin, Yuehe] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Chen, AQ (reprint author), Cent China Normal Univ, Coll Chem, Key Lab Pesticides, Minist Educ, Wuhan 430079, Peoples R China.
EM dudan@mail.ccnu.edu.cn; yuehe.lin@pnnl.gov
RI Du, Dan (Annie)/G-3821-2012; Lin, Yuehe/D-9762-2011
OI Lin, Yuehe/0000-0003-3791-7587
FU National Natural Science Foundation of China [21075047]; self-determined
research funds of CCNU from the colleges' basic research and operation
of MOE [CCNU11C01002]; CounterACT Program, Office of the Director,
National Institutes of Health (OD); National Institute of Neurological
Disorders and Stroke (NINDS) [U01 NS058161-01]; Battelle for US-DOE
[DE-AC05-76RL01830]
FX This work was supported by the National Natural Science Foundation of
China (21075047) and the self-determined research funds of CCNU from the
colleges' basic research and operation of MOE (CCNU11C01002). Y. Lin
acknowledges the financial support by the CounterACT Program, Office of
the Director, National Institutes of Health (OD) and the National
Institute of Neurological Disorders and Stroke (NINDS), Grant Number U01
NS058161-01. The contents of this publication are solely the
responsibility of the authors and do not necessarily represent the
official views of the NIH. Pacific Northwest National Laboratory is
operated by Battelle for US-DOE under Contract DE-AC05-76RL01830.
NR 29
TC 8
Z9 8
U1 4
U2 38
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 29
BP 11029
EP 11034
DI 10.1039/c2ra20994b
PG 6
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051QS
UT WOS:000312142700034
ER
PT J
AU Lin, YG
Lin, CK
Miller, JT
Hsu, YK
Chen, YC
Chen, LC
Chen, KH
AF Lin, Yan-Gu
Lin, Chi-Kai
Miller, Jeffrey T.
Hsu, Yu-Kuei
Chen, Ying-Chu
Chen, Li-Chyong
Chen, Kuei-Hsien
TI Photochemically active reduced graphene oxide with controllable
oxidation level
SO RSC ADVANCES
LA English
DT Article
ID GRAPHITE OXIDE; NANOSHEETS; REDUCTION; WATER
AB We have developed a novel one-step and effective electro-chemical (EC) method to directly exfoliate graphite into thin reduced graphene oxide (RGO) nanosheets at room temperature. The oxidation degree of the RGOs depends on the switching potentials of the EC synthesis. The high switching potential can significantly increase the C/O ratio of the RGOs. The ability to control the light-absorption of the RGOs by simply adjusting the switching potentials can be further achieved. Additionally, we also construct a RGO-ZnO heterojunction and investigate its photoelectro-chemical (PEC) properties. The results show that highly photoactive RGO as a photosensitizer can make H-2 evolution easier and improve the photoconversion ability of ZnO under visible-light irradiation. This approach presents us with a possibility for the environmentally friendly, ultrafast, low-cost, and large-scale production of RGOs and great potential in solar-energy conversion applications of graphene-based materials.
C1 [Lin, Yan-Gu; Chen, Kuei-Hsien] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
[Lin, Yan-Gu; Lin, Chi-Kai; Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
[Lin, Yan-Gu; Chen, Ying-Chu; Chen, Li-Chyong; Chen, Kuei-Hsien] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10617, Taiwan.
[Hsu, Yu-Kuei] Natl Dong Hwa Univ, Dept Optoelect Engn, Hualien 97401, Taiwan.
RP Lin, YG (reprint author), Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan.
EM yglin@anl.gov; linc@cmt.anl.gov
RI Dom, Rekha/B-7113-2012; sinica, iams/F-4084-2012; Chen,
Kuei-Hsien/F-7924-2012; lin, chikai/D-4986-2014; Hsu,
Yu-Kuei/H-6591-2014; Chen, Li-Chyong/B-1705-2015
OI Chen, Li-Chyong/0000-0001-6373-7729
FU National Science Council, Dragon's Gate Program, Taiwan; NSC; IAMS; NTU;
Argonne National Laboratory
FX This work was supported by the National Science Council, Dragon's Gate
Program, Taiwan. We gratefully thank NSC, IAMS, NTU and Argonne National
Laboratory for financial support for this project.
NR 18
TC 8
Z9 8
U1 1
U2 29
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 30
BP 11258
EP 11262
DI 10.1039/c2ra21988c
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051RR
UT WOS:000312145400016
ER
PT J
AU Hsu, YK
Yu, CH
Chen, YC
Lin, YG
AF Hsu, Yu-Kuei
Yu, Chun-Hao
Chen, Ying-Chu
Lin, Yan-Gu
TI Hierarchical Cu2O photocathodes with nano/microspheres for solar
hydrogen generation
SO RSC ADVANCES
LA English
DT Article
ID VISIBLE-LIGHT ILLUMINATION; TITANIUM PHOSPHATE ZTP; PHOTOELECTROCHEMICAL
ACTIVITY; THIN-FILMS; WATER; CUO; REDUCTION; COMPOSITE; FABRICATION;
ELECTRODES
AB A hierarchical p-type Cu2O film with nano/microspheres on copper foil is successfully synthesized via a facile and cost-effective liquid reduction route through transformation of a lotus-like CuO/Cu(OH)(2) nanosheet/nanowire structure. Various sizes of sphere-like Cu2O are transformed from CuO nanosheets and Cu(OH)(2) nanowires by chemically reducing the oxides from Cu2+ to Cu1+ in a solution of ascorbic acid at a low temperature of 60 degrees C. Mott-Schottky analysis shows the flat band potential of the sphere-like Cu2O film to be -0.11 V and an acceptor concentration of 2.7 x 10(20) cm(-3). A direct band gap of 2.02 eV in Cu2O film is determined by incident photon-to-electron conversion efficiency measurements. Significantly, this hierarchical Cu2O photocathode exhibits remarkable photoelectrochemical activity in visible light. These results demonstrate that the Cu2O film with nano/microspheres has great potential in solar hydrogen applications.
C1 [Hsu, Yu-Kuei; Yu, Chun-Hao] Natl Dong Hwa Univ, Dept Optoelect Engn, Hualien, Taiwan.
[Chen, Ying-Chu] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan.
[Lin, Yan-Gu] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA.
RP Hsu, YK (reprint author), Natl Dong Hwa Univ, Dept Optoelect Engn, Hualien, Taiwan.
EM ykhsu@mail.ndhu.edu.tw
RI Hsu, Yu-Kuei/H-6591-2014
FU National Dong Hwa University; National Science Council of the Republic
of China, Taiwan [NSC 101-2221-E-259-011]
FX The authors would like to thank the National Dong Hwa University and the
National Science Council of the Republic of China, Taiwan, for
financially supporting this research under Contract No. NSC
101-2221-E-259-011.
NR 27
TC 24
Z9 24
U1 7
U2 90
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 2046-2069
J9 RSC ADV
JI RSC Adv.
PY 2012
VL 2
IS 32
BP 12455
EP 12459
DI 10.1039/c2ra21979d
PG 5
WC Chemistry, Multidisciplinary
SC Chemistry
GA 051SU
UT WOS:000312148500061
ER
PT S
AU Slavici, V
Varier, R
Cooperman, G
Harrison, RJ
AF Slavici, Vlad
Varier, Raghu
Cooperman, Gene
Harrison, Robert J.
GP IEEE
TI Adapting Irregular Computations to Large CPU-GPU Clusters in the MADNESS
Framework
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
ID MULTIRESOLUTION QUANTUM-CHEMISTRY; MULTIWAVELET BASES
AB Graphics Processing Units (GPUs) are becoming the workhorse of scalable computations. MADNESS is a scientific framework used especially for computational chemistry. Most MADNESS applications use operators that involve many small tensor computations, resulting in a less regular organization of computations on GPUs. A single GPU kernel may have to multiply by hundreds of small square matrices (with fixed dimension ranging from 10 to 28). We demonstrate a scalable CPU-GPU implementation of the MADNESS framework over a 500-node partition on the Titan supercomputer. For this hybrid CPU-GPU implementation, we observe up to a 2.3-times speedup compared to an equivalent CPU-only implementation with 16 cores per node. For smaller matrices, we demonstrate a speedup of 2.2-times by using a custom CUDA kernel rather than a cuBLAS-based kernel.
C1 [Slavici, Vlad; Varier, Raghu; Cooperman, Gene] Northeastern Univ, Boston, MA 02115 USA.
[Harrison, Robert J.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA.
RP Slavici, V (reprint author), Northeastern Univ, Boston, MA 02115 USA.
EM vslav@ccs.neu.edu; varier@ccs.neu.edu; gene@ccs.neu.edu;
rjharrison@ornl.gov
FU National Science Foundation [CCF 0916133]
FX This work was partially supported by the National Science Foundation
under Grant CCF 0916133.
NR 19
TC 0
Z9 0
U1 0
U2 7
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 1
EP 9
DI 10.1109/CLUSTER.2012.42
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500001
ER
PT S
AU Yoshii, K
Iskra, K
Gupta, R
Beckman, P
Vishwanath, V
Yu, CJ
Coghlan, S
AF Yoshii, Kazutomo
Iskra, Kamil
Gupta, Rinku
Beckman, Pete
Vishwanath, Venkatram
Yu, Chenjie
Coghlan, Susan
GP IEEE
TI Evaluating Power-Monitoring Capabilities on IBM Blue Gene/P and Blue
Gene/Q
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
AB Power consumption is becoming a critical factor as we continue our quest toward exascale computing. Yet, actual power utilization of a complete system is an insufficiently studied research area. Estimating the power consumption of a large-scale system is a nontrivial task because a large number of components are involved and because power requirements are affected by the (unpredictable) workloads. Clearly needed is a power-monitoring infrastructure that can provide timely and accurate feedback to system developers and application writers so that they can optimize the use of this precious resource. Many existing large-scale installations do feature power-monitoring sensors; however, those are part of environmental-and health-monitoring subsystems and were not designed with application-level power consumption measurements in mind.
In this paper, we evaluate the existing power monitoring of IBM Blue Gene systems, with the goal of understanding what capabilities are available and how they fare with respect to spatial and temporal resolution, accuracy, latency, and other characteristics. We find that with a careful choice of dedicated microbenchmarks, we can obtain meaningful power consumption data even on Blue Gene/P, where the interval between available data points is measured in minutes. We next evaluate the monitoring subsystem on Blue Gene/Q, and are able to study the power characteristics of FPU and memory subsystems of Blue Gene/Q. We find the monitoring subsystem capable of providing second-scale resolution of power data conveniently separated between node components with seven seconds latency. This represents a significant improvement in power monitoring infrastructure, and hope future systems will enable real-time power measurement in order to better understand application behavior at a finer granularity.
C1 [Yoshii, Kazutomo; Iskra, Kamil; Gupta, Rinku; Beckman, Pete; Vishwanath, Venkatram; Yu, Chenjie] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Coghlan, Susan] Argonne Natl Lab, Leadership Comp Facil, Argonne, IL 60439 USA.
RP Yoshii, K (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
FU Office of Advanced Scientific Computer Research; Office of Science, U.S.
Department of Energy [DE- AC02-06CH11357]
FX This work was supported by the Office of Advanced Scientific Computer
Research, Office of Science, U.S. Department of Energy, under Contract
DE- AC02-06CH11357. This research used resources of the Argonne
Leadership Computing Facility at Argonne National Laboratory.
NR 23
TC 4
Z9 4
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 36
EP 44
DI 10.1109/CLUSTER.2012.62
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500005
ER
PT S
AU Lofstead, J
Dayal, J
Schwan, K
Oldfield, R
AF Lofstead, Jay
Dayal, Jai
Schwan, Karsten
Oldfield, Ron
GP IEEE
TI (DT)-T-2: Doubly Distributed Transactions for High Performance and
Distributed Computing
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
AB Current exascale computing projections suggest rather than a monolithic simulation running for the majority of the machine, a collection of components comprising the scientific discovery process will be employed in an online workflow. This move to an online workflow scenario requires knowledge that inter-step operations are completed and correct before the next phase begins. Further, dynamic load balancing or fault tolerance techniques may dynamically deploy or redeploy resources for optimal use of computing resources. These newly configured resources should only be used if they are successfully deployed.
Our (DT)-T-2 system offers a mechanism to support these kinds of operations by providing database-like transactions with distributed servers and clients. Ultimately, with adequate hardware support, full ACID compliance is possible for the transactions. To prove the viability of this approach, we show that the (DT)-T-2 protocol has less than 1.2 seconds of overhead using 4096 clients and 32 servers with good scaling characteristics using this initial prototype implementation.
C1 [Lofstead, Jay; Oldfield, Ron] Sandia Natl Labs, CSRI, Livermore, CA 94550 USA.
[Dayal, Jai; Schwan, Karsten] Georgia Inst Technol, CERCS, Atlanta, GA 30332 USA.
RP Lofstead, J (reprint author), Sandia Natl Labs, CSRI, Livermore, CA 94550 USA.
FU U.S. Department of Energy's National Nuclear Security Administration
[DE-AC04-94AL85000]
FX Sandia National Laboratories is a multi-program laboratory managed and
operated by Sandia Corporation, a wholly owned subsidiary of Lockheed
Martin Corporation, for the U.S. Department of Energys National Nuclear
Security Administration under contract DE-AC04-94AL85000.
NR 24
TC 1
Z9 1
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 90
EP 98
DI 10.1109/CLUSTER.2012.79
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500011
ER
PT S
AU Manzanares, A
Bent, J
Wingate, M
Gibson, G
AF Manzanares, Adam
Bent, John
Wingate, Meghan
Gibson, Garth
GP IEEE
TI The Power and Challenges of Transformative I/O
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
ID ROLLBACK-RECOVERY; SYSTEMS
AB Extracting high data bandwidth and metadata rates from parallel file systems is notoriously difficult. User workloads almost never achieve the performance of synthetic benchmarks. The reason for this is that real-world applications are not as well-aligned, well-tuned, or consistent as are synthetic benchmarks. There are at least three possible ways to address this challenge: modification of the real-world workloads, modification of the underlying parallel file systems, or reorganization of the real-world workloads using transformative middleware. In this paper, we demonstrate that transformative middleware is applicable across a large set of high performance computing workloads and is portable across the three major parallel file systems in use today. We also demonstrate that our transformative middleware layer is capable of improving the write, read, and metadata performance of I/O workloads by up to 150x, 10x, and 17x respectively, on workloads with processor counts of up to 65,536.
C1 [Manzanares, Adam; Wingate, Meghan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Bent, John] EMC Corp, Los Angeles, CA USA.
[Wingate, Meghan] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
RP Manzanares, A (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
EM nmtadam@gmail.com; John.Bent@emc.com; meghan@lanl.gov; garth@cs.cmu.edu
OI Gibson, Garth/0000-0002-6656-7080
NR 29
TC 2
Z9 2
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 144
EP 154
DI 10.1109/CLUSTER.2012.86
PG 11
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500017
ER
PT S
AU Chen, C
Chen, Y
Roth, PC
AF Chen, Chao
Chen, Yong
Roth, Philip C.
GP IEEE
TI DOSAS: Mitigating the Resource Contention in Active Storage Systems
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
DE dynamic active storage; active storage; resource contention; high
performance computing; data intensive computing; parallel I/O; parallel
file systems
AB Active storage provides an effective method to mitigate the I/O bottleneck problem of data intensive high performance computing applications. It can reduce the amount of data transferred as the application runs by moving appropriate computations close to the data. Prior research has achieved considerable progress in developing several active storage prototypes. However, existing studies have neglected the impact of resource contention when concurrent processes request IO operations from the same storage node simultaneously, which happens frequently in practice. In this paper, we analyze the impact of resource contention on active storage systems. Motivated by our analysis, we propose a novel Dynamic Operation Scheduling Active Storage architecture to address the resource contention issue. It offloads the active processing operations dynamically between storage nodes and compute nodes according to the system environment. By evaluating our architecture, we observed that: (1) resource contention is a critical problem for active storage systems, (2) the proposed dynamic operation scheduling method mitigates the problem, and (3) the new active storage architecture outperforms existing active storage systems.
C1 [Chen, Chao; Chen, Yong] Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA.
[Roth, Philip C.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA.
RP Chen, C (reprint author), Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA.
EM chao.chen@ttu.edu; yong.chen@ttu.edu; rothpc@ornl.gov
FU Oak Ridge Associated Universities (ORAU); National Science Foundation
[CNS-1162488]
FX This research is sponsored in part by the Oak Ridge Associated
Universities (ORAU) Ralph E. Powe Junior Faculty Enhancement Award and
by the National Science Foundation under grant CNS-1162488. The authors
acknowledge Forrest Sheng Bao for his contribution to the scheduling
algorithm, and the High Performance Computing Center (HPCC) at Texas
Tech University at Lubbock for providing HPC resources that have
contributed to the research results reported within this paper. URL:
http:// www. hpcc. ttu. edu.
NR 23
TC 4
Z9 4
U1 0
U2 5
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 164
EP 172
DI 10.1109/CLUSTER.2012.66
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500019
ER
PT S
AU Zhou, Z
Saule, E
Aktulga, HM
Yang, C
Ng, EG
Maris, P
Vary, JP
Catalyurek, UV
AF Zhou, Zheng
Saule, Erik
Aktulga, Hasan Metin
Yang, Chao
Ng, Esmond G.
Maris, Pieter
Vary, James P.
Catalyuerek, Uemit V.
GP IEEE
TI An Out-of-core Eigensolver on SSD-equipped Clusters
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
AB Obtaining highly accurate predictions on properties of light atomic nuclei using the Configuration Interaction (CI) approach requires computing few extremal eigenpairs of a large many-body nuclear Hamiltonian matrix, (H) over cap. A forefront challenge in CI calculations is the massive size of (H) over cap and its eigenvectors. The emergence of clusters equipped with non-volatile NAND-flash memory based solid state drives (SSD) presents unique opportunities. In this paper, we present the implementation details of an out-of-core eigensolver using a novel distributed out-of-core linear algebra framework, called DOoC+LAF. The framework provides an easy-to-use high-level application interface for linear algebra operations while providing efficient execution by orchestrating pipelined execution of computation, communication and I/O. We demonstrate the effectiveness of our out-of-core eigensolver implemented using DOoC+LAF by reporting performance results on large-scale eigenvalue problems arising in nuclear structure calculations.
C1 [Zhou, Zheng; Saule, Erik; Catalyuerek, Uemit V.] Ohio State Univ, Dept Biomed Informat, Columbus, OH 43210 USA.
[Zhou, Zheng] Wuhan Univ, Sch Comp, Wuhan, Peoples R China.
[Aktulga, Hasan Metin; Yang, Chao; Ng, Esmond G.] Lawrence Berkeley Natl Lab, Computat Res Div, Lawrence, KS USA.
[Maris, Pieter; Vary, James P.] Iowa State Univ Sci & Technol, Ames, IA 50011 USA.
[Catalyuerek, Uemit V.] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA.
RP Zhou, Z (reprint author), Ohio State Univ, Dept Biomed Informat, Columbus, OH 43210 USA.
OI Catalyurek, Umit/0000-0002-5625-3758
FU U. S. Department of Energy [DEFC02-09ER41582, DE-FG02-87ER40371, DE-
FC0206ER2775]; US NSF [0643969, 0904809, 0904802, 0904782]; Office of
Science of the U. S. Department of Energy
FX This work was supported in part by U. S. Department of Energy Grant
DEFC02-09ER41582 (SciDAC/ UNEDF), DE-FG02-87ER40371, and DE-
FC0206ER2775, and by the US NSF grants 0643969, 0904809 and 0904802, and
0904782. Computational resources were provided by the National Energy
Research Supercomputer Center (NERSC), which is supported by the Office
of Science of the U. S. Department of Energy. The authors would like to
thank Shane Canon for his help regarding the SSD- testbed.
NR 11
TC 1
Z9 1
U1 0
U2 8
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 248
EP 256
DI 10.1109/CLUSTER.2012.76
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500028
ER
PT S
AU Mametjanov, A
Lowell, D
Ma, CC
Norris, B
AF Mametjanov, Azamat
Lowell, Daniel
Ma, Ching-Chen
Norris, Boyana
GP IEEE
TI Autotuning Stencil-Based Computations on GPUs
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
DE autotuning; stencil; CUDA; GPU
ID GRAPHICS; SYSTEMS
AB Finite-difference, stencil-based discretization approaches are widely used in the solution of partial differential equations describing physical phenomena. Newton-Krylov iterative methods commonly used in stencil-based solutions generate matrices that exhibit diagonal sparsity patterns. To exploit these structures on modern GPUs, we extend the standard diagonal sparse matrix representation and define new matrix and vector data types in the PETSc parallel numerical toolkit. We create tunable CUDA implementations of the operations associated with these types after identifying a number of GPU-specific optimizations and tuning parameters for these operations. We discuss our implementation of GPU autotuning capabilities in the Orio framework and present performance results for several kernels, comparing them with vendor-tuned library implementations.
C1 [Mametjanov, Azamat; Lowell, Daniel; Norris, Boyana] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
[Ma, Ching-Chen] Rose Hulman Inst Technol, Comp Sci & Software Engn, Terre Haute, IN 47803 USA.
RP Mametjanov, A (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA.
EM azamat@mcs.anl.gov; dlowell@mcs.anl.gov; mac@rose-hulman.edu;
norris@mcs.anl.gov
FU U.S. Department of Energy Office of Science [DE-AC02-06CH11357]
FX This work was supported by the U.S. Department of Energy Office of
Science under Contract No. DE-AC02-06CH11357.
NR 22
TC 4
Z9 4
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 266
EP 274
DI 10.1109/CLUSTER.2012.46
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500030
ER
PT S
AU He, J
Sun, XH
Thakur, R
AF He, Jun
Sun, Xian-He
Thakur, Rajeev
GP IEEE
TI KNOWAC: I/O Prefetch via Accumulated Knowledge
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
AB The lasting memory-wall problem combined with the newly emerged big-data problem makes data access delay the first citizen of performance optimizations of cluster computing. Reduction of data access delay, however, is application dependent. It depends on the data access behaviors of the underlying applications. Therefore, leaning and understanding data access behaviors is a must for effective data access optimizations. Modern microprocessors are equipped with hardware data prefetchers, which predict data access patterns and prefetch data for CPU. However, memory systems in design do not have the capability to understand data access behaviors for performance optimizations. In this study, we propose a novel approach, named KNOWAC, to collect I/O information automatically through high-level I/O libraries. KNOWAC accumulates I/O knowledge and reveals data usage patterns by exploring the collected high-level I/O characteristics. The discovered data usage patterns can be used for different I/O optimizations. We apply KNOWAC to I/O prefetch under the framework of PnetCDF in this study. Experimental results on a real-world application show that KNOWAC is promising and has a true practical value in mitigating the I/O bottleneck.
C1 [He, Jun; Sun, Xian-He] IIT, Dept Comp Sci, Chicago, IL 60616 USA.
[Thakur, Rajeev] Argonne Natl Lab, Multimedia & Comp Sci Div, Argonne, IL 60439 USA.
RP He, J (reprint author), IIT, Dept Comp Sci, Chicago, IL 60616 USA.
EM jhe24@iit.edu; sun@iit.edu; thakur@mcs.anl.gov
FU National Science Foundation [CCF-0621435, CCF-0937877]
FX The authors are thankful to Karen Schuchardt of Pacific Northwest
National Laboratory, Quincey Koziol of HDF Group, Rob Ross of Argonne
National Laboratory for their constructive and thoughtful suggestions
toward this study. This research was supported in part by National
Science Foundation under NSF grant CCF-0621435 and CCF-0937877.
NR 26
TC 5
Z9 5
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 429
EP 437
DI 10.1109/CLUSTER.2012.83
PG 9
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500048
ER
PT S
AU Hsu, WH
Wang, CF
Ma, KL
Yu, HF
Chen, JH
AF Hsu, Wei-Hsien
Wang, Chun-Fu
Ma, Kwan-Liu
Yu, Hongfeng
Chen, Jacqueline H.
GP IEEE
TI A Job Scheduling Design for Visualization Services using GPU Clusters
SO 2012 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING (CLUSTER)
SE IEEE International Conference on Cluster Computing
LA English
DT Proceedings Paper
CT IEEE International Conference on Cluster Computing
CY SEP 24-28, 2012
CL Beijing, PEOPLES R CHINA
SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp (TCSC), Sugon, Intel, Inspur, VMWare, Mellanox, PARATERA, BLSC, LoongStore, Nvidia
ID MULTICOMPUTERS
AB Modern large-scale heterogeneous computers incorporating GPUs offer impressive processing capabilities. It is desirable to fully utilize such systems for serving multiple users concurrently to visualize large data at interactive rates. However, as the disparity between data transfer speed and compute speed continues to increase in heterogeneous systems, data locality becomes crucial for performance. We present a new job scheduling design to support multi-user exploration of large data in a heterogeneous computing environment, achieving near optimal data locality and minimizing I/O overhead. The targeted application is a parallel visualization system which allows multiple users to render large volumetric data sets in both interactive mode and batch mode. We present a cost model to assess the performance of parallel volume rendering and quantify the efficiency of job scheduling. We have tested our job scheduling scheme on two heterogeneous systems with different configurations. The largest test volume data used in our study has over two billion grid points. The timing results demonstrate that our design effectively improves data locality for complex multi-user job scheduling problems, leading to better overall performance of the service.
C1 [Hsu, Wei-Hsien; Wang, Chun-Fu; Ma, Kwan-Liu] Univ Calif Davis, Dept Comp Sci, Davis, CA 95616 USA.
[Yu, Hongfeng; Chen, Jacqueline H.] Sandia Natl Labs, Livermore, CA USA.
RP Hsu, WH (reprint author), Univ Calif Davis, Dept Comp Sci, Davis, CA 95616 USA.
EM whhsu@ucdavis.edu; cfwang@ucdavis.edu; ma@cs.ucdavis.edu;
hyu@sandia.gov; jhchen@sandia.gov
FU U. S. Department of Energy [DE-FC02-06ER25777, DE-FC0210ER26039,
DE-FC02-12ER26072]; U. S. National Science Foundation [OCI-0749217,
CCF0811422, OCI-0749227, OCI-0850566, OCI-0950008, CCF0938114]
FX This work has been sponsored in part by the U. S. Department of Energy
through grants DE-FC02-06ER25777, DE-FC0210ER26039, and
DE-FC02-12ER26072, program manager Lucy Nowell. This work has also been
supported in part by the U. S. National Science Foundation through
grants OCI-0749217, CCF0811422, OCI-0749227, OCI-0850566, OCI-0950008,
and CCF0938114. Computational resources have been made available on
Eureka at the Argonne National Laboratory.
NR 28
TC 3
Z9 3
U1 0
U2 8
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
SN 1552-5244
J9 IEEE INT C CL COMP
PY 2012
BP 523
EP 533
DI 10.1109/CLUSTER.2012.63
PG 11
WC Computer Science, Hardware & Architecture
SC Computer Science
GA BCW41
UT WOS:000311667500058
ER
PT S
AU Bazavov, A
Ding, HT
Petreczky, P
AF Bazavov, A.
Ding, H. -T.
Petreczky, P.
GP IOP
TI Quark number susceptibilities and color screening at high temperatures
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID SU(2) GAUGE-THEORY; FINITE-TEMPERATURE; SPECTRAL FUNCTIONS; MASSES; QCD
AB We discuss lattice calculations of quark number susceptibilities and the free energy of a static quark anti-quark pair in 2+1 flavor QCD at high temperatures using the HISQ action. We compare our lattice calculations with perturbative results.
C1 [Bazavov, A.; Ding, H. -T.; Petreczky, P.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Bazavov, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
OI Ding, Heng-Tong/0000-0003-0590-081X
NR 32
TC 2
Z9 2
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012017
DI 10.1088/1742-6596/389/1/012017
PG 7
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100017
ER
PT S
AU da Silva, CL
AF da Silva, Cesar Luiz
CA PHENIX Collaboration
GP IOP
TI Gamma, chi(c) and psi ' production and nuclear modifications from PHENIX
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID J/PSI; SUPPRESSION; COLLISIONS; MATTER
AB We report on the most recent measurements of bottomonia and excited states of charmonium made by PHENIX in mid- and forward rapidities at root s = 200 GeV. We also discuss the prospects for future measurements and concerns in using the color screening of different quarkonia states in heavy ion collisions as a quantitative observable for the temperature reached at the strong interacting quark gluon plasma.
C1 [da Silva, Cesar Luiz; PHENIX Collaboration] LANL, Los Alamos, NM 87544 USA.
RP da Silva, CL (reprint author), LANL, POB 1663-H846, Los Alamos, NM 87544 USA.
EM slash@bnl.gov
NR 22
TC 0
Z9 0
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012026
DI 10.1088/1742-6596/389/1/012026
PG 6
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100026
ER
PT S
AU Debbe, R
AF Debbe, R.
CA STAR Collaboration
GP IOP
TI Rho Meson Diffraction off Au Nuclei
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID COMPLEX NUCLEI; PHOTOPRODUCTION; COLLISIONS
AB The STAR Ultra Peripheral Collisions program has collected a substantial sample of rho mesons and for the first time at RHIC energies it has been able to extract the distribution of momentum transfert t from diffractive elastic scattering off the Au ion. The resulting difraction pattern is consistent with coherent scattering off a nuclear object the size of the Au nuclei. Measurements of this nature can offer insights and guidance to the ongoing preparations for the new electron ion programs.
C1 [Debbe, R.; STAR Collaboration] Brookhaven Natl Lab, Upton, NY 11973 USA.
RP Debbe, R (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA.
EM debbe@bnl.gov
NR 13
TC 3
Z9 3
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012042
DI 10.1088/1742-6596/389/1/012042
PG 8
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100042
ER
PT S
AU Sakaguchi, T
AF Sakaguchi, Takao
CA PHENIX Collaboration
GP IOP
TI Direct Photons: Flow, Thermal Yield and High p(T) R-AA from the PHENIX
experiment at RHIC
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID HEAVY-ION COLLISIONS
AB Electromagnetic radiation has been of interest in heavy ion collisions because it sheds light on early stages of the collisions where hadronic probes do not provide direct information since hadronization and hadronic interactions occur later. The latest results on direct photon measurements in Au+Au collisions together with ones in d+Au collisions from the PHENIX experiment at RHIC provide thermodynamic properties of the matter produced in the heavy ion collisions. An unexpectedly large positive elliptic flow measured for direct photons are hard to be explained by many models.
C1 [Sakaguchi, Takao; PHENIX Collaboration] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
RP Sakaguchi, T (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA.
EM takao@bnl.gov
NR 17
TC 0
Z9 0
U1 0
U2 0
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012020
DI 10.1088/1742-6596/389/1/012020
PG 8
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100020
ER
PT S
AU Stankus, P
AF Stankus, Paul
CA PHENIX Collaboration
GP IOP
TI Recent Flow Results from PHENIX
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
AB The phenomenon of collective flow, as revealed through azimuthal anisotropies of the "bulk" of produced hadrons, has been one of the most information-rich sectors of observables measured in RHIC and LHC heavy-ion collisions. A new wealth of data on bulk azimuthal anisotropies is now becoming available, including measurements involving (i) higher-order harmonics, (ii) identified hadrons, (iii) forward and backward rapidities, and (iv) system and beam energy dependencies. The latest compendium of flow results from PHENIX is reviewed and their range of physics implications will be discussed
C1 [Stankus, Paul] Oak Ridge Natl Lab, Oak Ridge, TN USA.
RP Stankus, P (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
EM paul.w.stankus@gmail.com
NR 5
TC 0
Z9 0
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012008
DI 10.1088/1742-6596/389/1/012008
PG 8
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100008
ER
PT S
AU Steinheimer, J
Xu, Z
Gudima, K
Botvina, A
Mishustin, I
Bleicher, M
Stocker, H
AF Steinheimer, J.
Xu, Z.
Gudima, K.
Botvina, A.
Mishustin, I.
Bleicher, M.
Stoecker, H.
GP IOP
TI Anti- and Hypermatter Research at the Facility for Antiproton and Ion
Research FAIR
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID BARYONIC MATTER; COLLISIONS; STRANGENESS; HYPERNUCLEI; NUCLEUS; PHYSICS
AB Within the next six years, the Facility for Antiproton and Ion Research (FAIR) is built adjacent to the existing accelerator complex of the GSI Helmholtz Center for Heavy Ion Research at Darmstadt, Germany. Thus, the current research goals and the technical possibilities are substantially expanded. With its worldwide unique accelerator and experimental facilities, FAIR will provide a wide range of unprecedented fore-front research in the fields of hadron, nuclear, atomic, plasma physics and applied sciences which are summarized in this article. As an example this article presents research efforts on strangeness at FAIR using heavy ion collisions, exotic nuclei from fragmentation and antiprotons to tackle various topics in this area. In particular, the creation of hypernuclei and antimatter is investigated.
C1 [Steinheimer, J.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
[Xu, Z.] Dept Phys, Brookhaven Natl Lab, Upton, NY 11973 USA.
Lab, Upton, NY 11973 USA.
[Gudima, K.; Botvina, A.; Mishustin, I.; Bleicher, M.; Stoecker, H.] Goethe Univ Frankfurt, FIAS, Frankfurt, Germany.
[Gudima, K.] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia.
[Botvina, A.] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia.
[Mishustin, I.] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia.
[Stoecker, H.] GSI Helmholtzzentrum Schwerionenforschung Gm, D-64291 D- Darmstadt, Germany.
RP Steinheimer, J (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA.
EM jsfroschauer@lbl.gov
RI Stoecker, Horst/D-6173-2013; Stoecker, Horst/F-8382-2012
OI Stoecker, Horst/0000-0002-3282-3664; Stoecker, Horst/0000-0002-3282-3664
FU HGS-HIRe; Hessian LOEWE initiative through the Helmholtz International
center for FAIR (HIC for FAIR); Frankfurt Center for Scientific
Computing (CSC); Feodor Lynen fellowship of the Alexander von Humboldt
foundation; Office of Nuclear Physics in the US Department of Energy's
Office of Science [DE-AC02-05CH11231]; Russia [NS-215.2012.2]
FX This work was supported by HGS-HIRe and the Hessian LOEWE initiative
through the Helmholtz International center for FAIR (HIC for FAIR).
Computational resources were provided by Frankfurt Center for Scientific
Computing (CSC) .J. S. acknowledges a Feodor Lynen fellowship of the
Alexander von Humboldt foundation. This work was supported by the Office
of Nuclear Physics in the US Department of Energy's Office of Science
under Contract No. DE-AC02-05CH11231. I.M. acknowledges partial support
from grant NS-215.2012.2 (Russia).
NR 37
TC 3
Z9 3
U1 0
U2 2
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012022
DI 10.1088/1742-6596/389/1/012022
PG 8
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100022
ER
PT S
AU Vitev, I
AF Vitev, Ivan
GP IOP
TI Results on high transverse momentum quarkonium production and
dissociation in heavy ion collisions
SO 28TH WINTER WORKSHOP ON NUCLEAR DYNAMICS 2012
SE Journal of Physics Conference Series
LA English
DT Proceedings Paper
CT 28th Winter Workshop on Nuclear Dynamics (WWND)
CY APR 07-14, 2012
CL PR
ID MATTER
AB We calculate the yields of quarkonia in heavy ion collisions at RHIC and the LHC as a function of the transverse momentum. Based upon NRQCD, these results include both color-singlet and color-octet contributions and feed-down effects from excited states. In reactions with ultra-relativistic nuclei, we focus on the consistent implementation of dynamically calculated nuclear matter effects, such as coherent power corrections, cold nuclear matter energy loss and the Cronin effect, in the initial state and collisional dissociation of quarkonia in the final state, as they traverse through the QGP. Theoretical results are presented for J/psi and Gamma and compared to experimental data where applicable. At RHIC, a good description of the high-p(T) J/psi, modification observed in central Cu+Cu and Au+Au collisions can be achieved within the model uncertainties. We find that J/psi, measurements in proton-nucleus reactions are needed to constrain the magnitude of cold nuclear matter effects. At the LHC, a good description of the experimental data can be achieved only in mid-central and peripheral Pb+Pb collisions.
C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
RP Vitev, I (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA.
EM ivitev@lanl.gov
NR 19
TC 0
Z9 0
U1 0
U2 1
PU IOP PUBLISHING LTD
PI BRISTOL
PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
SN 1742-6588
J9 J PHYS CONF SER
PY 2012
VL 389
AR 012029
DI 10.1088/1742-6596/389/1/012029
PG 8
WC Physics, Multidisciplinary; Physics, Nuclear
SC Physics
GA BCX88
UT WOS:000311907100029
ER
PT J
AU Whiteman, DN
Cadirola, M
Venable, D
Calhoun, M
Miloshevich, L
Vermeesch, K
Twigg, L
Dirisu, A
Hurst, D
Hall, E
Jordan, A
Vomel, H
AF Whiteman, D. N.
Cadirola, M.
Venable, D.
Calhoun, M.
Miloshevich, L.
Vermeesch, K.
Twigg, L.
Dirisu, A.
Hurst, D.
Hall, E.
Jordan, A.
Voemel, H.
TI Correction technique for Raman water vapor lidar signal-dependent bias
and suitability for water vapor trend monitoring in the upper
troposphere
SO ATMOSPHERIC MEASUREMENT TECHNIQUES
LA English
DT Article
ID LONG-TERM MEASUREMENTS; INTERNATIONAL H2O PROJECT;
ATMOSPHERIC-TEMPERATURE; HUMIDITY MEASUREMENTS; FLUORESCENCE-SPECTRA;
PART I; AWEX-G; VALIDATION; RADIOSONDE; CALIBRATION
AB The MOHAVE-2009 campaign brought together diverse instrumentation for measuring atmospheric water vapor. We report on the participation of the ALVICE (Atmospheric Laboratory for Validation, Interagency Collaboration and Education) mobile laboratory in the MOHAVE-2009 campaign. In appendices we also report on the performance of the corrected Vaisala RS92 radiosonde measurements during the campaign, on a new radiosonde based calibration algorithm that reduces the influence of atmospheric variability on the derived calibration constant, and on other results of the ALVICE deployment. The MOHAVE-2009 campaign permitted the Raman lidar systems participating to discover and address measurement biases in the upper troposphere and lower stratosphere. The ALVICE lidar system was found to possess a wet bias which was attributed to fluorescence of insect material that was deposited on the telescope early in the mission. Other sources of wet biases are discussed and data from other Raman lidar systems are investigated, revealing that wet biases in upper tropospheric (UT) and lower stratospheric (LS) water vapor measurements appear to be quite common in Raman lidar systems. Lower stratospheric climatology of water vapor is investigated both as a means to check for the existence of these wet biases in Raman lidar data and as a source of correction for the bias. A correction technique is derived and applied to the ALVICE lidar water vapor profiles. Good agreement is found between corrected ALVICE lidar measurments and those of RS92, frost point hygrometer and total column water. The correction is offered as a general method to both quality control Raman water vapor lidar data and to correct those data that have signal-dependent bias. The influence of the correction is shown to be small at regions in the upper troposphere where recent work indicates detection of trends in atmospheric water vapor may be most robust. The correction shown here holds promise for permitting useful upper tropospheric water vapor profiles to be consistently measured by Raman lidar within NDACC (Network for the Detection of Atmospheric Composition Change) and elsewhere, despite the prevalence of instrumental and atmospheric effects that can contaminate the very low signal to noise measurements in the UT.
C1 [Whiteman, D. N.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
[Cadirola, M.] Ecotronics LLC, Clarksburg, MD 20871 USA.
[Venable, D.; Calhoun, M.] Howard Univ, Washington, DC 20059 USA.
[Miloshevich, L.] Milo Sci LLC, Lafayette, CO 80026 USA.
[Vermeesch, K.; Twigg, L.] SSAI, Lanham, MD 20706 USA.
[Dirisu, A.] Oak Ridge Associated Univ, Oak Ridge, TN 37381 USA.
[Hurst, D.; Hall, E.; Jordan, A.] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
[Hurst, D.; Hall, E.; Jordan, A.] NOAA, Earth Syst Res Lab, Global Monitoring Div, Boulder, CO 80305 USA.
[Voemel, H.] Lindenberg Observ, Lindenberg, Germany.
RP Whiteman, DN (reprint author), NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
EM david.n.whiteman@nasa.gov
RI Hurst, Dale/D-1554-2016
OI Hurst, Dale/0000-0002-6315-2322
NR 60
TC 8
Z9 8
U1 0
U2 12
PU COPERNICUS GESELLSCHAFT MBH
PI GOTTINGEN
PA BAHNHOFSALLEE 1E, GOTTINGEN, 37081, GERMANY
SN 1867-1381
J9 ATMOS MEAS TECH
JI Atmos. Meas. Tech.
PY 2012
VL 5
IS 11
BP 2893
EP 2916
DI 10.5194/amt-5-2893-2012
PG 24
WC Meteorology & Atmospheric Sciences
SC Meteorology & Atmospheric Sciences
GA 046ZK
UT WOS:000311804400025
ER
PT S
AU Zhu, Y
Frey, HC
AF Zhu, Y.
Frey, H. C.
BE Rao, AD
TI Integrated gasification combined cycle (IGCC) systems
SO COMBINED CYCLE SYSTEMS FOR NEAR-ZERO EMISSION POWER GENERATION
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE gasification; gas turbine combined cycle; CO2 capture
ID COMMERCIALLY READY TECHNOLOGY; CO2 CAPTURE; POWER-PLANTS; COAL;
HYDROGEN; COPRODUCTION; PERFORMANCE; SEQUESTRATION; ELECTRICITY;
MEMBRANES
AB Concerns about climate change and the energy crisis have stimulated interest in developing advanced clean coal energy systems with high efficiency and near-zero emissions. Integrated gasification combined cycle (IGCC) technology typically has lower emissions and greater fuel flexibility than conventional coal-based power generation technologies. Specifically, IGCC enables effective precombustion CO2 capture with less efficiency reduction than a conventional pulverized coal power plant. In this chapter, the design of major process components, including gasifier, water-gas shift, gas cleanup and gas turbine combined cycle, is described. The emissions control technologies for particulate matter, sulfur, mercury, CO2 and nitrogen oxide used by IGCC systems are summarized. The advantages and limitations of IGCC technology at nominal design and off-design conditions are reviewed. Future trends in improvement of thermal performance and environmental signature are also summarized.
C1 [Zhu, Y.] Pacific NW Natl Lab, Richland, WA 99354 USA.
[Frey, H. C.] N Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA.
RP Zhu, Y (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99354 USA.
EM yunhua.zhu@pnl.gov; frey@ncsu.edu
NR 78
TC 2
Z9 2
U1 2
U2 6
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-618-0
J9 WOODHEAD PUBL SER EN
PY 2012
IS 32
BP 129
EP 161
D2 10.1533/9780857096180
PG 33
WC Energy & Fuels
SC Energy & Fuels
GA BCV81
UT WOS:000311626200005
ER
PT S
AU Richards, G
Williams, M
Casleton, K
AF Richards, G.
Williams, M.
Casleton, K.
BE Rao, AD
TI Novel cycles: oxy-combustion turbine cycle systems
SO COMBINED CYCLE SYSTEMS FOR NEAR-ZERO EMISSION POWER GENERATION
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE novel power systems; oxy-fuel cycles; CO2 capture; gas turbines;
oxy-combustion turbine cycles; combined cycle power systems; zero CO2
emission cycles
ID GAS-TURBINE; CO2 CAPTURE; FUEL CYCLES; CHEMICAL RECUPERATION; MATIANT
CYCLE; POWER; PLANT; SEQUESTRATION; PERFORMANCE; TECHNOLOGY
AB This chapter presents a discussion of recent developments in oxy-fuel combustion systems for the creation of near-zero emission power plants to control CO2 emissions. Rather than oxy-fuel approaches for pulverized coal boilers, the focus in this review is on oxy-fuel turbine-based combined cycle systems. These power cycles seek to capitalize on the direct separation of CO2 from an oxy-fuel combustion product stream as a method to manage CO2 emissions during power generation. This review discusses some of the novel oxy-fuel cycle configurations and describes the component operating conditions as well as performance needed to achieve high efficiency. A summary of the status of oxy-fuel combustors, turbomachinery and heat exchangers is presented; it discusses points that need to be considered in the development of turbomachinery for oxy-fuel applications. While a variety of different cycle configurations have been proposed in the literature, some of these cycle differences center on the choice of the dominant working fluid (CO2 or water) and how the cycle exploits the extraction of work from the heated fluid. Compared with existing gas turbines, the change in working fluid is likely to require specially built components to achieve desired efficiencies. Further, the combustion system in these cycles is substantially different from those in conventional natural gas combined cycles because the oxy-fuel process is ideally designed to operate with no excess oxygen. Impacts of these and other differences are discussed.
C1 [Richards, G.; Casleton, K.] Natl Energy Technol Lab, Morgantown, WV 26507 USA.
[Williams, M.] URS Corp, Morgantown, WV 26501 USA.
RP Richards, G (reprint author), Natl Energy Technol Lab, 3610 Collins Ferry Rd,POB 880, Morgantown, WV 26507 USA.
EM george.richards@netl.doe.gov
NR 67
TC 1
Z9 1
U1 0
U2 1
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-618-0
J9 WOODHEAD PUBL SER EN
PY 2012
IS 32
BP 186
EP 219
D2 10.1533/9780857096180
PG 34
WC Energy & Fuels
SC Energy & Fuels
GA BCV81
UT WOS:000311626200007
ER
PT S
AU Frey, HC
Zhu, Y
AF Frey, H. C.
Zhu, Y.
BE Rao, AD
TI Techno-economic analysis of combined cycle systems
SO COMBINED CYCLE SYSTEMS FOR NEAR-ZERO EMISSION POWER GENERATION
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE techno-economic analysis; natural gas combined cycle; integrated
combined cycle; CO2 capture
ID POWER-SYSTEMS; UNCERTAINTY; PLANT
AB This chapter introduces techno-economic analysis (TEA) methodology. Case studies of pulverized coal (PC), natural gas combined cycle (NGCC) and integrated gasification combined cycle (IGCC) systems without and with the impacts of CO2 capture are presented, illustrating the application of TEA methods and comparing performance, emissions and costs of these power generation alternatives. The advantage and disadvantage of different process simulation methods for TEA are described. IGCC systems are estimated to have less relative decrease in efficiency and increase in capital and levelized costs than the other technology options. Given uncertainties in the costs of CO2 capture, and that IGCC technologies are at an earlier stage of commercial deployment than PC and NGCC technologies, the potential cost advantage of IGCC with CO2 capture is promising but requires ongoing evaluation.
C1 [Frey, H. C.] N Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA.
[Zhu, Y.] Pacific NW Natl Lab, Richland, WA 99354 USA.
RP Frey, HC (reprint author), N Carolina State Univ, Dept Civil Construct & Environm Engn, Campus Box 7908, Raleigh, NC 27695 USA.
EM frey@ncsu.edu; yunhua.zhu@pnl.gov
NR 30
TC 2
Z9 2
U1 2
U2 4
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-618-0; 978-0-85709-013-3
J9 WOODHEAD PUBL SER EN
PY 2012
IS 32
BP 306
EP 328
D2 10.1533/9780857096180
PG 23
WC Energy & Fuels
SC Energy & Fuels
GA BCV81
UT WOS:000311626200012
ER
PT J
AU Puso, MA
Sanders, J
Settgast, R
Liu, B
AF Puso, Michael A.
Sanders, Jessica
Settgast, Randy
Liu, Ben
TI An embedded mesh method in a multiple material ALE
SO COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
LA English
DT Article
DE Coupled Euler-Lagrange; Overlapping mesh methods; Lagrange multiplier
methods
ID FLUID-STRUCTURE INTERACTION; FINITE-ELEMENT-METHOD; LAGRANGE MULTIPLIER;
FORMULATION; SIMULATION; EFFICIENT; CONTACT; FLOW
AB A new approach for treating the mechanical interactions of overlapping finite element meshes is presented. Referred to as embedded mesh methods here, these overlapping mesh methods typically include a foreground solid mesh and a background Euler fluid grid or solid mesh. A number of different approaches have been used in previous work to characterize the interactions of the background and foreground meshes at the interface. Lagrange multipliers are well suited to enforce the continuity constraints but care must be taken such that the resulting formulation is stable. Several Lagrange multiplier techniques are examined in this work and applied to coupling solid meshes and fluid-structure interaction type problems. In addition, details regarding implementation in a two-step, multi-material, Arbitrary Lagrangian Eulerian (ALE) code are presented. Example problems demonstrate convergence and applicability to a range of problems. In particular, the fluid-structure interaction examples focus on blast applications. (C) 2012 Elsevier B.V. All rights reserved.
C1 [Puso, Michael A.; Sanders, Jessica; Settgast, Randy; Liu, Ben] Lawrence Livermore Natl Lab, Methods Dev Grp, Livermore, CA 94550 USA.
RP Puso, MA (reprint author), 7000 East Ave, Livermore, CA 94550 USA.
EM puso1@llnl.gov; sanders39@llnl.gov; settgast@llnl.gov; liu15@llnl.gov
NR 39
TC 5
Z9 5
U1 1
U2 12
PU ELSEVIER SCIENCE SA
PI LAUSANNE
PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND
SN 0045-7825
J9 COMPUT METHOD APPL M
JI Comput. Meth. Appl. Mech. Eng.
PY 2012
VL 245
BP 273
EP 289
DI 10.1016/j.cma.2012.07.014
PG 17
WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary
Applications; Mechanics
SC Engineering; Mathematics; Mechanics
GA 044VZ
UT WOS:000311654600020
ER
PT J
AU Travia, NE
Monreal, MJ
Scott, BL
Kiplinger, JL
AF Travia, Nicholas E.
Monreal, Marisa J.
Scott, Brian L.
Kiplinger, Jaqueline L.
TI Thorium-mediated ring-opening of tetrahydrofuran and the development of
a new thorium starting material: preparation and chemistry of
ThI4(DME)(2)
SO DALTON TRANSACTIONS
LA English
DT Article
ID RAY CRYSTAL-STRUCTURES; MONOMER-DIMER EQUILIBRIUM; INTERMOLECULAR
HYDROAMINATION; ORGANOMETALLIC CHEMISTRY; ORGANOACTINIDE COMPLEXES;
TRIMETHYLSILYL IODIDE; MOLECULAR-STRUCTURES; URANIUM ALKOXIDES; TERMINAL
ALKYNES; LIGAND
AB The thorium(IV) tetraiodide complex ThI4(DME)(2) (3) (DME = 1,2-dimethoxyethane) has been prepared in high yield by reacting the corresponding chloride complex ThCl4(DME)(2) with an excess of trimethylsilyl iodide (Me3SiI) in toluene. This new route avoids the use of thorium metal as a reagent. ThI4(DME)(2) (3) exhibits excellent thermal stability compared to ThI4(THF)(4) (1), which undergoes rapid ring-opening of THF at ambient temperature to yield the iodobutoxide complex ThI3[O(CH2)(4)I](THF)(3) (2). Subsequent ligand-exchange between 2 and DME affords ThI3[O(CH2)(4)I](DME)(2) (11), which can be converted to 3 with Me3SiI. Salt metathesis between 2 and K(L-Me) (L-Me = (2,6-(Pr2C6H3)-Pr-i)NC(Me)CHC(Me)N(2,6-(Pr2C6H3)-Pr-i)) cleanly gives (L-Me) ThI2[O(CH2)(4)I](THF) (10), which is a rare example of a thorium beta-diketiminate complex. Complexes 2, 10, and 11 represent the first reported examples of THF ring-opening mediated by thorium. The synthetic utility of ThI4(DME)(2) (3) is demonstrated by preparation of thorium(IV) alkoxide, amide, and organometallic compounds.
C1 [Travia, Nicholas E.; Monreal, Marisa J.; Scott, Brian L.; Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Kiplinger, JL (reprint author), Los Alamos Natl Lab, Mail Stop J-514, Los Alamos, NM 87545 USA.
EM kiplinger@lanl.gov
RI Kiplinger, Jaqueline/B-9158-2011; Scott, Brian/D-8995-2017
OI Kiplinger, Jaqueline/0000-0003-0512-7062; Scott,
Brian/0000-0003-0468-5396
FU LANL G.T. Seaborg Institute for Transactinium Science; LANL; LANL LDRD
program; Division of Chemical Sciences, Office of Basic Energy Science,
Heavy Element Chemistry program
FX For financial support of this work, we acknowledge the LANL G.T. Seaborg
Institute for Transactinium Science (postdoctoral fellowships to N.E.T.
and M.J.M.), LANL (Director's and Frederick Reines PD Fellowships to
M.J.M.), the LANL LDRD program, and the Division of Chemical Sciences,
Office of Basic Energy Science, Heavy Element Chemistry program. Dr
David L. Clark (LANL) and Prof Daniel Rabinovich (UNC-Charlotte) are
gratefully acknowledged for helpful discussions and for sharing
unpublished results.
NR 58
TC 14
Z9 14
U1 2
U2 24
PU ROYAL SOC CHEMISTRY
PI CAMBRIDGE
PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND
SN 1477-9226
J9 DALTON T
JI Dalton Trans.
PY 2012
VL 41
IS 48
BP 14514
EP 14523
DI 10.1039/c2dt31676e
PG 10
WC Chemistry, Inorganic & Nuclear
SC Chemistry
GA 043CH
UT WOS:000311520000008
PM 23027565
ER
PT J
AU Henson, V
Sanders, G
AF Henson, Van Emden
Sanders, Geoffrey
TI LOCALLY SUPPORTED EIGENVECTORS OF MATRICES ASSOCIATED WITH CONNECTED AND
UNWEIGHTED POWER-LAW GRAPHS
SO ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS
LA English
DT Article
DE graph Laplacian; adjacency matrix; eigenvectors; eigenvalues; sparse
matrices
ID EIGENVALUE PROBLEMS; LAPLACIAN; NETWORKS
AB We identify a class of graph substructures that yields locally supported eigenvectors of matrices associated with unweighted and undirected graphs, such as the various types of graph Laplacians and adjacency matrices. We discuss how the detection of these substructures gives rise to an efficient calculation of the locally supported eigenvectors and how to exploit the sparsity of such eigenvectors to coarsen the graph into a (possibly) much smaller graph for calculations involving multiple eigenvectors. This preprocessing step introduces no spectral error and, for some graphs, may amount to considerable computational savings when computing any desired eigenpair. As an example, we discuss how these vectors are useful for estimating the commute time between any two vertices and bounding the error associated with approximations for some pairs of vertices.
C1 [Henson, Van Emden; Sanders, Geoffrey] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94551 USA.
RP Henson, V (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Box 808,L-561, Livermore, CA 94551 USA.
EM henson5@llnl.gov; sanders29@llnl.gov
FU U.S. Department of Energy by Lawrence Livermore National Laboratory
[DE-AC52-07NA27344]
FX This work was performed under the auspices of the U.S. Department of
Energy by Lawrence Livermore National Laboratory under Contract
DE-AC52-07NA27344.
NR 28
TC 2
Z9 2
U1 0
U2 2
PU KENT STATE UNIVERSITY
PI KENT
PA ETNA, DEPT MATHEMATICS & COMPUTER SCIENCE, KENT, OH 44242-0001 USA
SN 1068-9613
J9 ELECTRON T NUMER ANA
JI Electron. Trans. Numer. Anal.
PY 2012
VL 39
BP 353
EP 378
PG 26
WC Mathematics, Applied
SC Mathematics
GA 047KW
UT WOS:000311840500021
ER
PT B
AU Rawls, GB
Adams, T
Newhouse, NL
AF Rawls, G. B.
Adams, T.
Newhouse, N. L.
BE Gangloff, RP
Somerday, BP
TI Hydrogen production and containment
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE hydrogen containment; hydrogen vessels; ASME Code for Hydrogen; DOT
cylinders in hydrogen service; composite vessels in hydrogen service;
hydrogen leakage; hydrogen piping
AB The focus in this chapter is on the review of relevant consensus codes and standards as they relate to the design, manufacture, and operation of pressurized vessels and piping/pipeline system for gaseous hydrogen service. Major areas of emphasis for these reviews have centered on the following: (1) material composition and property control, (2) failure mechanism, to include fatigue, (3) design specifications and margins, (4) post-fabrication testing and post-installation evaluation/examination, and (5) impact of leak rates and leakage phenomena. In addition, embedded within the discussions on code and standard requirements are anecdotal accounts of 'real world' pressurized hydrogen vessel and piping/pipeline failures and challenges with design. Finally, the overarching goal of this chapter is to indicate the complexity of design of system for pressurized hydrogen service and to demonstrate the significant role that consensus codes and standards play in providing an invaluable framework to helping overcome these challenges through aiding the safe design and operation of pressurized hydrogen systems and components.
C1 [Rawls, G. B.; Adams, T.] Savannah River Natl Lab, Aiken, SC 29808 USA.
RP Rawls, GB (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA.
EM george.rawls@srnl.doe.gov; nnewhouse@lincolncomposites.com
NR 58
TC 0
Z9 0
U1 0
U2 0
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9
J9 WOODHEAD PUBL MATER
PY 2012
BP 3
EP 50
D2 10.1533/9780857093899
PG 48
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400002
ER
PT J
AU Gangloff, RP
Somerday, BP
AF Gangloff, Richard P.
Somerday, Brian P.
BE Gangloff, RP
Somerday, BP
TI Gaseous hydrogen embrittlement of materials in energy technologies
Volume 1: The problem, its characterisation and effects on particular
alloy classes Introduction
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Editorial Material; Book Chapter
C1 [Gangloff, Richard P.] Univ Virginia, Dept Mat Sci & Engn, Sch Engn & Appl Sci, Charlottesville, VA 22904 USA.
[Somerday, Brian P.] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Gangloff, RP (reprint author), Univ Virginia, Dept Mat Sci & Engn, Sch Engn & Appl Sci, 395 McCormick Rd,POB 400745, Charlottesville, VA 22904 USA.
EM rpg7y@Virginia.edu; bpsomer@sandia.gov
NR 0
TC 0
Z9 0
U1 0
U2 1
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9
J9 WOODHEAD PUBL MATER
PY 2012
BP XIX
EP XXIII
D2 10.1533/9780857093899
PG 5
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400001
ER
PT B
AU Nibur, KA
Somerday, BP
AF Nibur, K. A.
Somerday, B. P.
BE Gangloff, RP
Somerday, BP
TI Fracture and fatigue test methods in hydrogen gas
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE facture mechanics tests; mechanical properties; gaseous hydrogen
embrittlement; fracture threshold; fatigue
ID HIGH-PRESSURE HYDROGEN; AUSTENITIC STAINLESS-STEELS; HIGH-STRENGTH
STEELS; CRACK-GROWTH; ENVIRONMENT EMBRITTLEMENT; GASEOUS-HYDROGEN;
LOW-TEMPERATURES; PROPAGATION; DEFORMATION; THRESHOLD
AB The objective of this chapter is to review the various testing methods for measuring the effects of hydrogen on mechanical properties of metal alloys. Emphasis is placed on testing techniques conducted in gaseous hydrogen environments. For these in situ test methods, the conditions necessary for ensuring the measured results are conservative and repeatable as well as relevant to design needs for structural components are described. Increasing hydrogen gas pressure and purity, and reducing dynamic loading rates, generally enhance the severity of hydrogen embrittlement. Thus selection of test parameters must consider the effects of these variables. Screening tests, such as tensile and disk rupture techniques, provide qualitative methods for evaluating the relative behavior of metals and alloys in gaseous hydrogen environments, but these tests do not provide data that enable a quantitative assessment of the performance of structural metals in service. For this latter purpose, tests that explicitly address crack initiation and growth under quasi-static or cyclic loading are more relevant. Specifically, fracture mechanics test methods provide such quantitative measurements of hydrogen-assisted crack propagation, and similitude concepts enable these data to be employed in structural life assessments.
C1 [Nibur, K. A.] Hy Performance Mat Testing LLC, Bend, OR 97701 USA.
[Somerday, B. P.] Sandia Natl Labs, Livermore, CA 94550 USA.
RP Nibur, KA (reprint author), Hy Performance Mat Testing LLC, Bend, OR 97701 USA.
EM Kevin@hy-performancetesting.com; bpsomer@sandia.gov
NR 106
TC 3
Z9 3
U1 0
U2 1
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9; 978-1-84569-677-1
J9 WOODHEAD PUBL MATER
PY 2012
BP 195
EP 236
D2 10.1533/9780857093899
PG 42
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400008
ER
PT B
AU Murakami, Y
Ritchie, RO
AF Murakami, Y.
Ritchie, R. O.
BE Gangloff, RP
Somerday, BP
TI Effects of hydrogen on fatigue-crack propagation in steels
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE metals; hydrogen embrittlement; high cycle fatigue; low cycle fatigue;
slip bands
ID AUSTENITIC STAINLESS-STEELS; PRESSURE-VESSEL STEEL; HIGH-STRENGTH
STEELS; NICKEL-BASE ALLOYS; NEAR-THRESHOLD; FRACTURE-BEHAVIOR; DUCTILE
FRACTURE; GROWTH-BEHAVIOR; ALPHA-TITANIUM; IRON
AB This chapter presents a review of several important phenomena associated with the influence of hydrogen on the process of the growth of fatigue cracks in steels. In the first part of the chapter, we describe the influence of internal hydrogen for higher-strength low alloy (Cr-Mo) and austenitic stainless steel; in the second part, a corresponding description of the influence of external hydrogen (hydrogen gas) on fatigue-crack propagation in several classes of lower-strength pressure vessel and piping steels is given.
We show that several critical mechanistic phenomena can be enhanced by the presence of internal hydrogen, including the localization of slip bands in fatigue, the in situ transformation to strain-induced martensite in stainless steels (Types 304, 316 and 316L), and the effect of frequency on fatigue-crack growth rates. The nature of the fatigue fracture surface, specifically the morphology of the fatigue striations, and the consequent role of fatigue crack closure, can also be influenced by hydrogen.
With regard to the influence of external hydrogen (gaseous hydrogen), based on measurements over a wide range of growth rates from 10(-11) to 10(-5) m/cycle, we show that crack-propagation rates can be significantly higher in dehumidified gaseous hydrogen as compared to moist air in two distinct regimes of crack growth, namely, at the intermediate range of growth typically above similar to 10(-8) m/cycle and at the threshold region below similar to 10(-9) m/cycle approaching lattice dimensions/cycle. In lower strength steels, both effects are seen at maximum stress intensities K-max far below the threshold stress intensity for hydrogen-assisted cracking under sustained (non-cyclic) loading.
Comparing the influence of internal and external hydrogen, the acceleration in fatigue-crack growth rates due to hydrogen can be interpreted as a function of hydrogen concentration at crack tip, slip localization and any variation in the active mechanisms of crack closure.
C1 [Murakami, Y.] Kyushu Univ, Nishi Ku, Int Inst Carbon Neutral Res I2CNER, Fukuoka 8190395, Japan.
[Murakami, Y.] Natl Inst Adv Ind Sci & Technol, Res Ctr Hydrogen Ind Use & Storage HYDROGENIUS, Nishi Ku, Fukuoka 8190395, Japan.
[Ritchie, R. O.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
[Ritchie, R. O.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Murakami, Y (reprint author), Kyushu Univ, Nishi Ku, Int Inst Carbon Neutral Res I2CNER, Fukuoka 8190395, Japan.
EM ymura@mech.kyushu-u.ac.jp; roritchie@lbl.gov
NR 65
TC 2
Z9 2
U1 0
U2 5
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9; 978-1-84569-677-1
J9 WOODHEAD PUBL MATER
PY 2012
BP 379
EP 417
D2 10.1533/9780857093899
PG 39
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400012
ER
PT J
AU Garrison, WM
Moody, NR
AF Garrison, W. M., Jr.
Moody, N. R.
BE Gangloff, RP
Somerday, BP
TI Hydrogen embrittlement of high strength steels
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE steel; microstructure; hydrogen embrittlement; stress corrosion
cracking; fracture initiation; crack growth rates; rare earths; retained
austenite; reverted austenite
ID STRESS-CORROSION CRACKING; MARTENSITIC STAINLESS-STEEL; SECONDARY
HARDENING STEEL; HIGH-TEMPERATURE AUSTENITIZATION; INDUCED INTERGRANULAR
FRACTURE; RARE-EARTH ADDITIONS; T-200 MARAGING-STEEL; AISI 4340 STEEL;
LOW-ALLOY STEEL; 3.5 PCT NACL
AB This chapter reviews experimental studies of the hydrogen embrittlement of high strength steels. The focus has been on six types of steel, having distinctly different microstructures. The six steel types are the low alloy steels, high toughness secondary hardening steels such as AF1410, hot work die steels, martensitic secondary hardening stainless steels, maraging steels and precipitation strengthened martensitic stainless steels. The susceptibilities of these classes of steel to hydrogen embrittlement as measured by the effects of hydrogen on fracture initiation and subsequent crack growth are discussed when the steels are tested in hydrogen gas, when the hydrogen has been introduced by charging and when the hydrogen embrittlement is associated with stress corrosion cracking in distilled water or salt water.
C1 [Garrison, W. M., Jr.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
[Moody, N. R.] Sandia Natl Labs, Livermore, CA 94551 USA.
RP Garrison, WM (reprint author), Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
EM wmg@andrew.cmu.edu; nrmoody@sandia.gov
NR 203
TC 3
Z9 3
U1 0
U2 7
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9
J9 WOODHEAD PUBL MATER
PY 2012
BP 421
EP 492
D2 10.1533/9780857093899
PG 72
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400013
ER
PT B
AU Marchi, CS
AF Marchi, C. San
BE Gangloff, RP
Somerday, BP
TI Hydrogen embrittlement of stainless steels and their welds
SO GASEOUS HYDROGEN EMBRITTLEMENT OF MATERIALS IN ENERGY TECHNOLOGIES, VOL
1: THE PROBLEM, ITS CHARACTERISATION AND EFFECTS ON PARTICULAR ALLOY
CLASSES
SE Woodhead Publishing in Materials
LA English
DT Article; Book Chapter
DE austenitic stainless steels; hydrogen-assisted fracture; external and
internal hydrogen; strain-induced martensite; models of
hydrogen-assisted deformation and fracture; material-property
relationships; effect of environment
ID STACKING-FAULT ENERGY; STRAIN-INDUCED MARTENSITE; ENVIRONMENTALLY
ASSISTED CRACKING; TEMPERATURE BRITTLE-FRACTURE; PLASTIC-DEFORMATION;
AUSTENITIC STEELS; DISLOCATION INTERACTIONS; NUMERICAL SIMULATIONS;
PERMEATION BEHAVIOR; TENSILE PROPERTIES
AB This chapter reviews the current state of understanding of hydrogen-assisted deformation and fracture of austenitic stainless steels for use in gaseous hydrogen. The basic characteristics of austenitic stainless steels are presented, focusing on the alloys most commonly used in gaseous hydrogen service. Hydrogen transport in austenitic alloys is briefly discussed, followed by a summary of the important characteristics of internal and external hydrogen environments. A few brief comments are given on models of hydrogen-assisted deformation and fracture with emphasis on hydrogen-enhanced localized plasticity. Observations of fracture are summarized for austenitic stainless steel in the presence of hydrogen and related to the tendency for localized deformation in this material class. In the following section, the basic trends of hydrogen-assisted deformation and fracture are outlined with examples from the literature for tensile, fracture and fatigue testing, respectively. In concluding, necessary research and development activities mentioned throughout the text are summarized in the context of unambiguously elucidating the micromechanisms of hydrogen-assisted fracture in austenitic stainless steels.
C1 Sandia Natl Labs, Livermore, CA 94550 USA.
RP Marchi, CS (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA.
EM cwsanma@sandia.gov
NR 152
TC 1
Z9 1
U1 0
U2 1
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
BN 978-0-85709-389-9; 978-1-84569-677-1
J9 WOODHEAD PUBL MATER
PY 2012
BP 592
EP 623
D2 10.1533/9780857093899
PG 32
WC Energy & Fuels; Materials Science, Multidisciplinary
SC Energy & Fuels; Materials Science
GA BCW71
UT WOS:000311701400017
ER
PT S
AU Petculescu, G
Wu, RQ
McQueeney, R
AF Petculescu, Gabriela
Wu, Ruqian
McQueeney, Robert
BE Buschow, KHJ
TI MAGNETOELASTICITY OF BCC FE-GA ALLOYS
SO HANDBOOK OF MAGNETIC MATERIALS, VOL 20
SE Handbook of Magnetic Materials
LA English
DT Article; Book Chapter
ID INDUCED MAGNETIC-ANISOTROPY; SHORT-RANGE ORDER; IRON-RICH ALLOYS;
SINGLE-CRYSTALS; ELECTRONIC-STRUCTURE; TRANSITION-METALS;
MAGNETOSTRICTION CONSTANTS; TEMPERATURE-DEPENDENCE; DIFFUSE SCATTERING;
ELASTIC-CONSTANTS
C1 [Petculescu, Gabriela] Univ SW Louisiana, Lafayette, LA 70504 USA.
[Wu, Ruqian] Univ Calif Irvine, Irvine, CA USA.
[McQueeney, Robert] Iowa State Univ, Ames Lab, Ames, IA USA.
RP Petculescu, G (reprint author), Univ SW Louisiana, Lafayette, LA 70504 USA.
EM gp@louisiana.edu
RI McQueeney, Robert/A-2864-2016
OI McQueeney, Robert/0000-0003-0718-5602
NR 120
TC 13
Z9 13
U1 0
U2 1
PU NORTH HOLLAND, ELSEVIER SCIENCE PUBL BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1567-2719
BN 978-0-444-56377-4; 978-0-444-56371-2
J9 HBK MAGN MAT
PY 2012
VL 20
BP 123
EP 226
DI 10.1016/B978-0-444-56371-2.00003-9
PG 104
WC Materials Science, Multidisciplinary; Physics, Applied
SC Materials Science; Physics
GA BCT24
UT WOS:000311344200004
ER
PT J
AU Pooser, RC
Earl, DD
Evans, PG
Williams, B
Schaake, J
Humble, TS
AF Pooser, Raphael C.
Earl, Dennis D.
Evans, Philip G.
Williams, Brian
Schaake, Jason
Humble, Travis S.
TI FPGA-based gating and logic for multichannel single photon counting
SO JOURNAL OF MODERN OPTICS
LA English
DT Article
DE optical instrumentation and technology; single photon detector; SPAD;
multichannel photon counting; FPGA coincidence logic
ID INGAAS/INP AVALANCHE PHOTODIODE; TELECOMMUNICATION WAVELENGTHS; DETECTOR
AB We present results characterizing multichannel InGaAs single photon detectors utilizing gated passive quenching circuits (GPQC), self-differencing techniques, and field programmable gate array (FPGA)-based logic for both diode gating and coincidence counting. Utilizing FPGAs for the diode gating frontend and the logic counting backend has the advantage of low cost compared to custom built logic circuits and current off-the-shelf detector technology. Further, FPGA logic counters have been shown to work well in quantum key distribution (QKD) test beds. Our setup combines multiple independent detector channels in a reconfigurable manner via an FPGA backend and post processing in order to perform coincidence measurements between any two or more detector channels simultaneously. Using this method, states from a multi-photon polarization entangled source are detected and characterized via coincidence counting on the FPGA. Photons detection events are also processed by the quantum information toolkit for application testing (QITKAT).
C1 [Pooser, Raphael C.; Earl, Dennis D.; Evans, Philip G.; Williams, Brian; Schaake, Jason] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
[Williams, Brian; Schaake, Jason] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA.
[Humble, Travis S.] Oak Ridge Natl Lab, Computat Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Pooser, RC (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA.
EM pooserrc@ornl.gov
OI Pooser, Raphael/0000-0002-2922-453X
FU Defense Threats Reduction Agency; Department of Energy Office of
Electricity; U.S. Department of energy [DE-AC05-00OR22725]
FX T.S.H., D. D. E., and B. W. acknowledge support from the Defense Threats
Reduction Agency. R. C. P. acknowledges support from the Department of
Energy Office of Electricity. The authors thank A. Restelli and J.
Bienfang at NIST for their knowledge and discussions on SPD gating. The
authors also thank Craig Deibele at ORNL for his expertise in comb
filters. This work was performed at Oak Ridge National Laboratory,
operated by UT-Battelle for the U.S. Department of energy under Contract
No. DE-AC05-00OR22725. The work has been authored by a contractor of the
U.S. Government. Accordingly, the U. S. Government retains a
nonexclusive, royalty-free license to publish or reproduce the published
form of this work, or to allow others to do so for U. S. Government
purposes.
NR 26
TC 3
Z9 4
U1 1
U2 22
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0950-0340
J9 J MOD OPTIC
JI J. Mod. Opt.
PY 2012
VL 59
IS 17
BP 1500
EP 1511
DI 10.1080/09500340.2012.706325
PG 12
WC Optics
SC Optics
GA 039BS
UT WOS:000311218400007
ER
PT J
AU Grice, WP
Bennink, RS
Evans, PG
Humble, TS
Schaake, JC
AF Grice, W. P.
Bennink, R. S.
Evans, P. G.
Humble, T. S.
Schaake, J. C.
TI Auxiliary entanglement in photon pairs for multi-photon entanglement
SO JOURNAL OF MODERN OPTICS
LA English
DT Article
DE entanglement; quantum optics; down-conversion
AB A growing number of experiments make use of multiple pairs of photons generated in the process of spontaneous parametric down-conversion. We show that entanglement in unwanted degrees of freedom can adversely affect the results of these experiments. We also discuss techniques to reduce or eliminate spectral and spatial entanglement, and we present results from two-photon polarization-entangled source with almost no entanglement in these degrees of freedom. Finally, we present two methods for the generation of four-photon polarization-entangled states. In one of these methods, four-photon can be generated without the need for intermediate two-photon entanglement.
C1 [Grice, W. P.; Bennink, R. S.; Evans, P. G.; Humble, T. S.; Schaake, J. C.] Oak Ridge Natl Lab, Oak Ridge, TN USA.
[Schaake, J. C.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA.
RP Grice, WP (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA.
EM gricew@ornl.gov
RI Grice, Warren/L-8466-2013;
OI Grice, Warren/0000-0003-4266-4692
FU Oak Ridge National Laboratory; AFRL [F4HBKC1013G001]; US Department of
Energy [DE-AC05-00OR22725]
FX This work was sponsored by the Laboratory Directed Research and
Development Program of Oak Ridge National Laboratory, managed by
UT-Battelle, LLC, for the US Department of Energy. W. G. also
acknowledges the Governments' support in the publication of this paper
under AFRL Contract No. F4HBKC1013G001.; This material is published by
permission of Oak Ridge National Laboratory, operated by UT-Battelle,
LLC for the US Department of Energy under Contract No.
DE-AC05-00OR22725. The US Government retains for itself, and others
acting on its behalf, a paid-up, non-exclusive, and irrevocable
worldwide license in said article to reproduce, prepare derivative
works, distribute copies to the public, and perform publicly and display
publicly, by or on behalf of the Government
NR 21
TC 2
Z9 2
U1 0
U2 11
PU TAYLOR & FRANCIS LTD
PI ABINGDON
PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
SN 0950-0340
J9 J MOD OPTIC
JI J. Mod. Opt.
PY 2012
VL 59
IS 17
BP 1538
EP 1545
DI 10.1080/09500340.2012.705342
PG 8
WC Optics
SC Optics
GA 039BS
UT WOS:000311218400010
ER
PT J
AU Ganis, B
Pencheva, G
Wheeler, MF
Wildey, T
Yotov, I
AF Ganis, Benjamin
Pencheva, Gergina
Wheeler, Mary F.
Wildey, Tim
Yotov, Ivan
TI A FROZEN JACOBIAN MULTISCALE MORTAR PRECONDITIONER FOR NONLINEAR
INTERFACE OPERATORS
SO MULTISCALE MODELING & SIMULATION
LA English
DT Article
DE multiscale; mortar finite element; domain decomposition; multiphase
flow; nonlinear interface problem
ID FINITE-ELEMENT-METHOD; BALANCING DOMAIN DECOMPOSITION; ELLIPTIC
PROBLEMS; POROUS-MEDIA; OSCILLATING COEFFICIENTS; FLOW; CONVERGENCE;
SIMULATION; GRIDS
AB We present an efficient approach for preconditioning systems arising in multiphase flow in a parallel domain decomposition framework known as the mortar mixed finite element method. Subdomains are coupled together with appropriate interface conditions using mortar finite elements. These conditions are enforced using an inexact Newton-Krylov method, which traditionally required the solution of nonlinear subdomain problems on each interface iteration. A new preconditioner is formed by constructing a multiscale basis on each subdomain for a fixed Jacobian and time step. This basis contains the solutions of nonlinear subdomain problems for each degree of freedom in the mortar space and is applied using an efficient linear combination. Numerical experiments demonstrate the relative computational savings of recomputing the multiscale preconditioner sparingly throughout the simulation versus the traditional approach.
C1 [Ganis, Benjamin; Pencheva, Gergina; Wheeler, Mary F.] Univ Texas Austin, ICES, Austin, TX 78712 USA.
[Wildey, Tim] Sandia Natl Labs, Optimizat & Uncertainty Quantificat Dept, Albuquerque, NM 87185 USA.
[Yotov, Ivan] Univ Pittsburgh, Dept Math, Pittsburgh, PA 15260 USA.
RP Ganis, B (reprint author), Univ Texas Austin, ICES, Austin, TX 78712 USA.
EM bganis@ices.utexas.edu; gergina@ices.utexas.edu; mfw@ticam.utexas.edu;
tmwilde@sandia.gov; yotov@math.pitt.edu
FU Center for Frontiers of Subsurface Energy Security, an Energy Frontier
Research Center; U.S. Department of Energy, Office of Science, Office of
Basic Energy Sciences [DE-SC0001114]; DOE [DE-FG02-04ER25618]; NSF [DMS
0813901]; U.S. Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This material is based upon work supported as part of the Center for
Frontiers of Subsurface Energy Security, an Energy Frontier Research
Center funded by the U.S. Department of Energy, Office of Science,
Office of Basic Energy Sciences under award DE-SC0001114. The first and
fifth authors were partially supported by the DOE grant
DE-FG02-04ER25618 and the NSF grant DMS 0813901.; Sandia National
Laboratories is a multiprogram laboratory managed and operated by Sandia
Corporation, a wholly owned subsidiary of Lockheed Martin Corporation,
for the U.S. Department of Energy's National Nuclear Security
Administration under contract DE-AC04-94AL85000.
NR 34
TC 6
Z9 6
U1 1
U2 6
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1540-3459
J9 MULTISCALE MODEL SIM
JI Multiscale Model. Simul.
PY 2012
VL 10
IS 3
BP 853
EP 873
DI 10.1137/110826643
PG 21
WC Mathematics, Interdisciplinary Applications; Physics, Mathematical
SC Mathematics; Physics
GA 044NX
UT WOS:000311628100008
ER
PT J
AU Jiang, L
Presho, M
AF Jiang, L.
Presho, M.
TI A RESOURCEFUL SPLITTING TECHNIQUE WITH APPLICATIONS TO DETERMINISTIC AND
STOCHASTIC MULTISCALE FINITE ELEMENT METHODS
SO MULTISCALE MODELING & SIMULATION
LA English
DT Article
DE multiscale finite element methods; Green's function; stochastic elliptic
equations; reduction of parameter space dimension
ID PARTIAL-DIFFERENTIAL-EQUATIONS; RANDOM INPUT DATA; ELLIPTIC PROBLEMS;
POROUS-MEDIA; COLLOCATION METHOD; COEFFICIENTS; GRIDS
AB In this paper we use a splitting technique to develop new multiscale basis functions for the multiscale finite element method (MsFEM). The multiscale basis functions are iteratively generated using a Green's kernel. The Green's kernel is based on the first differential operator of the splitting. The proposed MsFEM is applied to deterministic elliptic equations and stochastic elliptic equations, and we show that the proposed MsFEM can considerably reduce the dimension of the random parameter space for stochastic problems. By combining the method with sparse grid collocation methods, the need for a prohibitive number of deterministic solves is alleviated. We rigorously analyze the convergence of the proposed method for both the deterministic and stochastic elliptic equations. Computational complexity discussions are also offered to supplement the convergence analysis. A number of numerical results are presented to confirm the theoretical findings.
C1 [Jiang, L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
[Presho, M.] Texas A&M Univ, Inst Appl Math & Computat Sci, College Stn, TX 77843 USA.
RP Jiang, L (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA.
EM ljiang@lanl.gov; mpresho@math.tamu.edu
FU Department of Energy at Los Alamos National Laboratory
[DE-AC52-06NA25396]; DOE Office of Advanced Scientific Computing
Research (ASCR) program in Applied Mathematical Sciences
FX This work was funded by the Department of Energy at Los Alamos National
Laboratory under contract DE-AC52-06NA25396 and the DOE Office of
Advanced Scientific Computing Research (ASCR) program in Applied
Mathematical Sciences.
NR 26
TC 7
Z9 7
U1 0
U2 3
PU SIAM PUBLICATIONS
PI PHILADELPHIA
PA 3600 UNIV CITY SCIENCE CENTER, PHILADELPHIA, PA 19104-2688 USA
SN 1540-3459
J9 MULTISCALE MODEL SIM
JI Multiscale Model. Simul.
PY 2012
VL 10
IS 3
BP 954
EP 985
DI 10.1137/110843253
PG 32
WC Mathematics, Interdisciplinary Applications; Physics, Mathematical
SC Mathematics; Physics
GA 044NX
UT WOS:000311628100012
ER
PT S
AU Calderoni, P
Cabet, C
AF Calderoni, P.
Cabet, C.
BE Feron, D
TI Corrosion issues in molten salt reactor (MSR) systems
SO NUCLEAR CORROSION SCIENCE AND ENGINEERING
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE molten salt; corrosion; nuclear system; fluorides; nickel alloys
ID STRUCTURAL-MATERIALS; FLUORIDE; BERYLLIUM; FLIBE; COMPATIBILITY;
ELECTRODE; ALLOYS; FLINAK; MELT
AB This chapter discusses corrosion phenomena in nuclear system employing molten salts as liquid fuel or coolant material. First, molten salt reactor concepts are reviewed, along with a brief historical perspective on their development. The physical and chemical phenomena involved in the corrosion process in molten salt media are then described. The references on corrosion data available from systems operation and R&D activities are then discussed in detail, along with quantitative and phenomenological observation. Finally, monitoring methods are discussed along with the limited information on corrosion control and lifetime prediction based on the limited experience available.
C1 [Calderoni, P.] Idaho Natl Lab, Nucl Sci & Technol Div, Idaho Falls, ID 83415 USA.
[Cabet, C.] CEA, French Atom Energy & Alternat Energies Commiss, Lab Etude Corros Non Aqueuse, DEN,DANS,DPC,SCCME, F-91191 Gif Sur Yvette, France.
RP Calderoni, P (reprint author), Idaho Natl Lab, Nucl Sci & Technol Div, POB 1625, Idaho Falls, ID 83415 USA.
EM Pattrick.Calderoni@inl.gov; celine.cabet@cea.fr
OI Calderoni, Pattrick/0000-0002-2316-6404
NR 46
TC 1
Z9 1
U1 0
U2 7
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-534-3; 978-1-84569-765-5
J9 WOODHEAD PUBL SER EN
PY 2012
IS 22
BP 842
EP 865
D2 10.1533/9780857095343
PG 24
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA BCV45
UT WOS:000311568600024
ER
PT S
AU Teysseyre, S
AF Teysseyre, S.
BE Feron, D
TI Corrosion issues in supercritical water reactor (SCWR) systems
SO NUCLEAR CORROSION SCIENCE AND ENGINEERING
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE supercritical water cooled reactor; corrosion; stress corrosion
cracking; irradiation assisted stress corrosion cracking
ID NICKEL-BASED ALLOYS; TYPE-316 STAINLESS-STEEL; AUSTENITIC ALLOYS;
HIGH-TEMPERATURE; STEAM OXIDATION; MECHANICAL-PROPERTIES; ALUMINIDE
COATINGS; ZIRCONIUM ALLOYS; FERRITIC STEEL; CHROMIUM ION
AB This chapter discusses the issues of corrosion and stress corrosion cracking for the supercritical water cooled reactor (SCWR) concepts. After a brief description of reactor concepts, the availability and relevance of corrosion data obtained for other supercritical systems are discussed. The chapter then presents currently available data on corrosion and stress corrosion cracking for SCWR by alloy classes and the mitigation techniques investigated.
C1 Idaho Natl Lab, Adv Test Reactor Natl Sci User Facil, Idaho Falls, ID 83415 USA.
RP Teysseyre, S (reprint author), Idaho Natl Lab, Adv Test Reactor Natl Sci User Facil, POB 1625, Idaho Falls, ID 83415 USA.
EM Sebastien.Teysseyre@inl.gov
NR 121
TC 2
Z9 2
U1 1
U2 4
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-534-3
J9 WOODHEAD PUBL SER EN
PY 2012
IS 22
BP 866
EP 905
D2 10.1533/9780857095343
PG 40
WC Materials Science, Multidisciplinary; Nuclear Science & Technology
SC Materials Science; Nuclear Science & Technology
GA BCV45
UT WOS:000311568600025
ER
PT S
AU Negin, CA
Szilagyi, A
AF Negin, C. A.
Szilagyi, A.
BE Laraia, M
TI Managing the transition from operation to decommissioning of a nuclear
facility
SO NUCLEAR DECOMMISSIONING: PLANNING, EXECUTION AND INTERNATIONAL
EXPERIENCE
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE nuclear decommissioning; nuclear facility transition; nuclear
management; transition end state
AB This chapter addresses planning, management, and conduct of activities during the period of transition from the cessation of operations of a nuclear facility to the beginning of final decommissioning. Management of this phase of the facility life cycle is as a project, compared with the production mode of the operations phase. The subjects addressed range from strategic planning to execution for a transition project. Particular emphasis is on creating detailed specifications for the technical and administrative conditions to be achieved that define the completion of the transition project.
C1 [Negin, C. A.] Project Enhancement Corp, Germantown, MD 20874 USA.
[Szilagyi, A.] US DOE, Germantown, MD 20874 USA.
RP Negin, CA (reprint author), Project Enhancement Corp, 20300 Century Blvd,Ste 175, Germantown, MD 20874 USA.
EM cnegin@pec1.net; Andrew.Szilagyi@em.doe.gov
NR 6
TC 0
Z9 0
U1 0
U2 0
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-533-6
J9 WOODHEAD PUBL SER EN
PY 2012
IS 36
BP 117
EP 149
D2 10.1533/9780857095336
PG 33
WC Nuclear Science & Technology
SC Nuclear Science & Technology
GA BCV42
UT WOS:000311567600007
ER
PT S
AU Mukherjee, PP
Schulz, VP
Becker, J
Glatt, E
Wiegmann, A
AF Mukherjee, P. P.
Schulz, V. P.
Becker, J.
Glatt, E.
Wiegmann, A.
BE Hartnig, C
Roth, C
TI Microstructure reconstruction and transport simulation in polymer
electrolyte membrane fuel cells
SO POLYMER ELECTROLYTE MEMBRANE AND DIRECT METHANOL FUEL CELL TECHNOLOGY,
VOL 1: FUNDAMENTALS AND PERFORMANCE OF LOW TEMPERATURE FUEL CELLS
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE polymer electrolyte fuel cell; PEFC; stochastic microstructure
reconstruction; effective property estimation; direct numerical method
ID DIRECT NUMERICAL-SIMULATION; CATALYST LAYER; POROUS-MEDIA; GDL
STRUCTURE; IMAGES; FLOW
AB The polymer electrolyte fuel cell (PEFC) consists of disparate porous media microstructures, e.g. catalyst layer, microporous layer, gas diffusion layer, as the key components for achieving the desired performance attributes. The microstructure-transport interactions are of paramount importance to the performance and durability of the PEFC. In this chapter, a systematic description of the stochastic microstructure reconstruction techniques along with the numerical methods to estimate effective transport properties and to study the influence of the porous structures on the underlying transport behavior is presented.
C1 [Mukherjee, P. P.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
[Schulz, V. P.] Duale Hsch Baden Wurttemburg Mannheim, D-68163 Mannheim, Germany.
[Becker, J.; Glatt, E.; Wiegmann, A.] Fraunhofer ITWM, D-67663 Kaiserslautern, Germany.
RP Mukherjee, PP (reprint author), Oak Ridge Natl Lab, Comp Sci & Math Div, 1 Bethel Valley Rd,POB 2008,Mail Stop 6164, Oak Ridge, TN 37831 USA.
EM mukherjee.pp@gmail.com
NR 49
TC 1
Z9 1
U1 0
U2 1
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-547-3
J9 WOODHEAD PUBL SER EN
PY 2012
IS 30
BP 219
EP 253
PG 35
WC Energy & Fuels
SC Energy & Fuels
GA BCU90
UT WOS:000311540000010
ER
PT S
AU Hinebaugh, J
Bazylak, A
Mukherjee, PP
AF Hinebaugh, J.
Bazylak, A.
Mukherjee, P. P.
BE Hartnig, C
Roth, C
TI Multi-scale modeling of two-phase transport in polymer electrolyte
membrane fuel cells
SO POLYMER ELECTROLYTE MEMBRANE AND DIRECT METHANOL FUEL CELL TECHNOLOGY,
VOL 1: FUNDAMENTALS AND PERFORMANCE OF LOW TEMPERATURE FUEL CELLS
SE Woodhead Publishing Series in Energy
LA English
DT Article; Book Chapter
DE polymer electrolyte membrane fuel cell; PEMFC; two-phase transport;
porous media; pore network model; lattice Boltzmann model; direct
numerical simulation; macroscopic upscaling
ID GAS-DIFFUSION LAYERS; LIQUID WATER TRANSPORT; RAYLEIGH-TAYLOR
INSTABILITY; DIRECT NUMERICAL-SIMULATION; LATTICE BOLTZMANN-EQUATION;
PORE-NETWORK; MULTIPHASE FLOW; CATALYST LAYER; GDL STRUCTURE;
FLUID-FLOWS
AB The porous components, e.g. gas diffusion layer (GDL) and catalyst layer (CL) of the polymer electrolyte membrane fuel cell (PEMFC), possess unique material properties and microstructural variations, which leads to challenges in numerically modeling the prevalent multiphase flow and transport. Due to the volume-averaged nature, the continuum-based computational models fail to capture the influence of the pore morphology and microstructural heterogeneity on the two-phase transport behavior. Pore-scale modeling, namely the pore network model and the lattice Boltzmann model, are discussed as promising avenues for modeling two-phase flow in the PEMFC porous components at the microstructure-level. The importance of macroscopic upscaling from pore-scale transport behavior is further elucidated to shed light on the microstructure-transport-performance interplay in PEMFCs.
C1 [Hinebaugh, J.; Bazylak, A.] Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada.
[Mukherjee, P. P.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Bazylak, A (reprint author), Univ Toronto, Dept Mech & Ind Engn, 5 Kings Coll Rd, Toronto, ON M5S 3G8, Canada.
EM abazylak@mie.utoronto.ca; mukherjee.pp@gmail.com
RI Hinebaugh, James/D-4593-2013
OI Hinebaugh, James/0000-0002-1137-824X
NR 59
TC 2
Z9 2
U1 0
U2 2
PU WOODHEAD PUBL LTD
PI CAMBRIDGE
PA ABINGTON HALL ABINGTON, CAMBRIDGE CB1 6AH, CAMBS, ENGLAND
SN 2044-9364
BN 978-0-85709-547-3
J9 WOODHEAD PUBL SER EN
PY 2012
IS 30
BP 254
EP 290
PG 37
WC Energy & Fuels
SC Energy & Fuels
GA BCU90
UT WOS:000311540000011
ER
PT B
AU Kubista, M
Rusnakova, V
Svec, D
Sjogreen, B
Tichopad, A
AF Kubista, Mikael
Rusnakova, Vendula
Svec, David
Sjoegreen, Bjoern
Tichopad, Ales
BE Filion, M
TI GenEx: Data Analysis Software
SO QUANTITATIVE REAL-TIME PCR IN APPLIED MICROBIOLOGY
LA English
DT Article; Book Chapter
ID QUANTITATIVE PCR; DESIGN
AB As the qPCR field advances, the design of experiments and the analysis of data are becoming more important and more challenging. Calculation of relative expression of a reporter gene to a reference gene in pairs of samples using the Delta Delta Cq method is no longer sufficient. Studies are now designed using multiple markers, nested levels, exploring or confirming the effect of multiple factors, occasionally in paired designs, etc. Proper handling of such data requires software that support the planning and design of experiments, and data analysis. Several software with these capacities are emerging. This chapter describes some of the features of one of the most powerful of those: GenEx from MultiD Analysis.
C1 [Kubista, Mikael; Svec, David] TATAA Bioctr, Gothenburg, Sweden.
[Kubista, Mikael; Rusnakova, Vendula; Svec, David] Acad Sci Czech Republic, Dept Biotechnol, Prague, Czech Republic.
[Sjoegreen, Bjoern] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA USA.
[Tichopad, Ales] Charles Univ Prague, Med Fac Pilsen, Prague, Czech Republic.
[Tichopad, Ales] Tech Univ Munich, Freising Weihenstephan, Germany.
RP Kubista, M (reprint author), TATAA Bioctr, Gothenburg, Sweden.
EM mikael.kubista@tataa.com; vendula.rusnakova@img.cas.cz;
david.svec@tataa.com; sjogreen2@11nl.gov; tichopad@ceeor.com
RI Novosadova, Vendula/G-6388-2014; Kubista, Mikael/A-5689-2008
OI Kubista, Mikael/0000-0002-2940-352X
NR 9
TC 2
Z9 2
U1 0
U2 6
PU CAISTER ACADEMIC PRESS
PI WYMONDHAM
PA 32 HEWITTS LANE, WYMONDHAM NR 18 0JA, ENGLAND
BN 978-1-908230-01-0
PY 2012
BP 63
EP 84
PG 22
WC Biotechnology & Applied Microbiology; Microbiology
SC Biotechnology & Applied Microbiology; Microbiology
GA BCW26
UT WOS:000311650600004
ER
PT J
AU Liu, C
Lovato, ML
Blumenthal, WR
AF Liu, C.
Lovato, M. L.
Blumenthal, W. R.
GP TMS
TI INTERFACIAL STRENGTH OF Al/Zr/DU-10%wtMo SUBJECT TO DIFFERENT LOADING
MODES
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE Interfacial strength; Al/Zr/DU-10wt%Mo; Mixed-mode loading; DIC
AB Compact tension (CT) experiments were conducted with fixtures that allowed mode-I (tensile opening mode), mode-II (shearing mode), and mixed-mode loading to measure the interfacial strength between HIP-clad Al and Al, and Al and Zr/DU-10wt%Mo. Specimens were made with the same HIP process used for making thin composite foils, but instead used 25 mm thick Al-6061 cladding that allowed specimens to be gripped without adhesives. Three configurations of specimens were tested: (1) Al/Al specimens with a pre-crack along the seam; (2) specimens containing both a Zr/DU-10wt%Mo layer and an Al/Al seam along part of the interface; and (3) specimens containing only a Zr/DU-10wt%Mo layer at the interface, but with a pre-notch along part of the interface. Digital image correlation (DIC) was used to measure full-field deformations during the test. The results show that mode-I loaded interfaces exhibit the weakest strength and the widest scatter. The strength increases when more shearing component is introduced.
C1 [Liu, C.; Lovato, M. L.; Blumenthal, W. R.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Liu, C (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
NR 2
TC 0
Z9 0
U1 0
U2 2
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4
PY 2012
BP 241
EP 248
PG 8
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500032
ER
PT J
AU Liu, C
Lovato, ML
Blumenthal, WR
AF Liu, C.
Lovato, M. L.
Blumenthal, W. R.
GP TMS
TI UNIAXIAL TENSION OF FRICTION-WELDED 304 STAINLESS STEEL AND 6061
ALUMINUM
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE 304 stainless steel; 6061 aluminum; DIC; Friction-welded; Tensile test
AB A study of friction-welded 304 stainless steel and 6061 aluminum was conducted using uniaxial tension loading and optical two-dimensional digital image correlation (2D-DIC) to generate full field deformation maps on the surface of the specimen and to quantify the mechanical stress-strain response. A significant observation was that failure did not occur at the friction-welded interface, but instead occurred within a strain-localized neck region in the aluminum approximately 1.5 mm away from the weld interface. A detailed analysis of the 2D-DIC data set for one test specimen was used to illustrate how the mechanical response of the aluminum changed significantly from its "pre-weld" behavior due to the friction-weld process on a sub-millimeter length scale. A methodology for quantifying the mechanical property variations in the aluminum as a function of the distance from the welded interface was demonstrated using multiple, high spatial resolution, post-test "virtual extensometers".
C1 [Liu, C.; Lovato, M. L.; Blumenthal, W. R.] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Liu, C (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
NR 1
TC 0
Z9 0
U1 1
U2 5
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4
PY 2012
BP 249
EP 256
PG 8
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500033
ER
PT B
AU Sabau, AS
Gorti, SB
Peter, WH
Chen, W
Yamamoto, Y
AF Sabau, Adrian S.
Gorti, Sarma B.
Peter, William H.
Chen, Wei
Yamamoto, Yukinori
GP TMS
TI NUMERICAL SIMULATION OF COLD PRESSING OF ARMSTRONG CP-TITANIUM POWDER
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
ID RETURN MAPPING ALGORITHM; LOW-COST TITANIUM; DENSIFICATION BEHAVIOR;
ALLOY POWDER; METAL; PLASTICITY; COMPACTION; MODELS
AB Numerical simulation results for the cold pressing of Armstrong CP-Ti powder are presented. The computational model was implemented in the commercial finite element program ABAQUS (TM). Several simulation cases were conducted for cylindrical samples with different friction coefficients and different compaction pressures, under both single-action and dual-action uniaxial pressing. Numerical simulation results for the density distribution are compared against experimental data in order to validate the computational model.
Notice: This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.
C1 [Sabau, Adrian S.; Peter, William H.; Chen, Wei] Oak Ridge Natl Lab, Mat Sci & Technol Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
[Gorti, Sarma B.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA.
RP Sabau, AS (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA.
RI Chen, Wei/C-1110-2011;
OI Sabau, Adrian/0000-0003-3088-6474
FU U.S. DOE [DEAC05-00OR22725, 17881]
FX This research was sponsored by the U.S. DOE, and carried out at ORNL,
under Contract DEAC05-00OR22725 with UT-Battelle, LLC. This research was
sponsored by the U.S. DOE, EERE Industrial Technology Program Office,
under CPS Agreement # 17881.
NR 25
TC 0
Z9 0
U1 0
U2 5
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4; 978-1-118-29607-3
PY 2012
BP 521
EP 528
PG 8
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500067
ER
PT B
AU Shet, S
Ravindra, N
Yan, YF
Al-Jassim, M
AF Shet, Sudhakar
Ravindra, Nuggehalli
Yan, Yanfa
Al-Jassim, Mowafak
GP TMS
TI DOPING AND CO-DOPING OF BANDGAP-ENGINEERED ZnO FILMS FOR SOLAR DRIVEN
HYDROGEN PRODUCTION
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE co-doping; photoelectrochemical; thin film
ID ALIGNED NANORODS; ZNO(AL,N) FILMS; THIN-FILMS
AB Co-doped ZnO:(Al,N) and ZnO:(Ga,N) films were deposited by co-sputtering using radio-frequency magnetron sputtering on F-doped tin-oxide-coated glass. We found that the ZnO:(Al, N) and ZnO:(Ga, N) films exhibited greatly enhanced crystallinity compared to ZnO: N films doped by pure N and deposited under similar conditions. Furthermore, the ZnO:(Al, N) and ZnO:(Ga, N) films showed much higher N-incorporation than ZnO: N films deposited with pure N doping. As a result, the ZnO:(Ga, N) films showed significantly higher photocurrents than ZnO: N doped only by N. The ZnO:(Cu,Ga) films were synthesized by RF magnetron sputtering in O-2 gas ambient at room temperature and then annealed at 500 degrees C in air for 2 hours. We found that the carrier concentration tuning does not significantly change the bandgap and crystallinity of the ZnO: Cu films. However, it can optimize the carrier concentration and thus dramatically enhance PEC response for the bandgap-reducedp-type ZnO thin films.
C1 [Shet, Sudhakar; Yan, Yanfa; Al-Jassim, Mowafak] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Shet, Sudhakar; Ravindra, Nuggehalli] New Jersey Inst Technol, Newark, NJ 07102 USA.
RP Shet, S (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Dom, Rekha/B-7113-2012
FU U.S. Department of Energy
FX This work was supported by the U.S. Department of Energy.
NR 11
TC 0
Z9 0
U1 3
U2 8
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4; 978-1-118-29607-3
PY 2012
BP 641
EP 649
PG 9
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500082
ER
PT B
AU Shet, S
Ahn, KS
Ravindra, N
Yan, YF
Al-Jassim, M
AF Shet, Sudhakar
Ahn, Kwang-Soon
Ravindra, Nuggehalli
Yan, Yanfa
Al-Jassim, Mowafak
GP TMS
TI NITROGEN DOPED ZnO (ZnO:N) THIN FILMS DEPOSITED BY REACTIVE RF MAGNETRON
SPUTTERING FOR PEC APPLICATIONS
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE N-doping; photoelectrochemical; thin film
ID ALIGNED NANORODS; ZNO(AL,N) FILMS; WATER; HYDROGEN; PHOTOCATALYSIS;
CELLS; TIO2
AB ZnO:N films were deposited by reactive RF magnetron sputtering on F-doped tin oxide coated glass substrates in mixed N-2 and O-2 gas ambient. Their PEC properties were measured and compared with those of as-deposited and annealed ZnO films. The ZnO: N films exhibit photoresponse in the visible-light region, yielding higher total photocurrents than ZnO thin films. ZnO: N thin films with reduced bandgaps were synthesized by reactive RF magnetron sputtering using ZnO target at 100 degrees C followed by post deposition annealing at 500 degrees C in air for 2 h. ZnO: N thin films showed enhanced N incorporation and shift of the optical absorption into the visible light regions. As a result, ZnO: N films showed improved PEC response, compared to ZnO thin films
C1 [Shet, Sudhakar; Yan, Yanfa; Al-Jassim, Mowafak] Natl Renewable Energy Lab, Golden, CO 80401 USA.
[Shet, Sudhakar; Ravindra, Nuggehalli] New Jersey Inst Technol, Newark, NJ 07102 USA.
[Ahn, Kwang-Soon] Yeungnam Univ, Sch Display & Chem Engn, Kyongsan 712749, South Korea.
RP Shet, S (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA.
RI Dom, Rekha/B-7113-2012
FU U.S. Department of Energy
FX This work was supported by the U.S. Department of Energy.
NR 23
TC 0
Z9 0
U1 3
U2 9
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4; 978-1-118-29607-3
PY 2012
BP 669
EP 676
PG 8
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500085
ER
PT B
AU Abedrabbo, S
Lahlouh, B
Shet, S
Fiory, AT
Ravindra, NM
AF Abedrabbo, S.
Lahlouh, B.
Shet, S.
Fiory, A. T.
Ravindra, N. M.
GP TMS
TI SPIN-COATED ERBIUM-DOPED SILICA SOL-GEL FILMS ON SILICON
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 1: MATERIALS PROCESSING AND INTERFACES
LA English
DT Proceedings Paper
CT Symposium on Materials Processing and Interfaces from 141st TMS Annual
Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE Photoluminescence; Thin films; Silicon; Sol-gel processing
ID EARTH ALUMINOSILICATE GLASSES; 1.5 MU-M; WAVE-GUIDES; HEAT-TREATMENT;
PHOTOLUMINESCENCE; SOL->GEL->GLASS; TEMPERATURE; FABRICATION; EMISSION
AB This work reports optical functionality contained in, as well as and produced by, thin film coatings. A sol-gel process, formulated with precursor active ingredients of erbium oxide and tetraethylorthosilicate (TEOS), was used for spin-coating thin (similar to 130 nm) erbium-doped (similar to 6 at. %) silica films on single-crystal silicon. Annealed films produce infrared emission in the 1.5-mu m band from erbium ions in the film, as well as greatly enhancing (similar to 100X) band-gap emission from the underlying silicon. The distinctly different mechanisms for the two modes of optical activities are interpreted in terms of optical emission theory and modeling; prospects for optoelectronic applications are discussed.
C1 [Abedrabbo, S.; Fiory, A. T.; Ravindra, N. M.] New Jersey Inst Technol, Dept Phys, Newark, NJ 07901 USA.
[Abedrabbo, S.] Stevens Inst Technol, Dept Phys & Engn Phys, Hoboken, NJ 07030 USA.
[Abedrabbo, S.; Lahlouh, B.] Univ Jordan, Dept Phys, Amman 11942, Jordan.
[Shet, S.] Natl Renewable Energy Lab, Golden, CO 80401 USA.
RP Abedrabbo, S (reprint author), New Jersey Inst Technol, Dept Phys, Newark, NJ 07901 USA.
FU University of Jordan; New Jersey Institute of Technology; U.S. National
Renewable Energy Laboratory
FX Partial support by the University of Jordan, the New Jersey Institute of
Technology, and the U.S. National Renewable Energy Laboratory are
gratefully acknowledged.
NR 36
TC 0
Z9 0
U1 1
U2 5
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35607-4; 978-1-118-29607-3
PY 2012
BP 677
EP 684
PG 8
WC Materials Science, Characterization & Testing; Materials Science,
Coatings & Films; Materials Science, Composites
SC Materials Science
GA BCV73
UT WOS:000311614500086
ER
PT B
AU Kuramoto, S
Setoyama, D
Furuta, T
Withey, E
Morris, JW
AF Kuramoto, S.
Setoyama, D.
Furuta, T.
Withey, E.
Morris, J. W., Jr.
GP TMS
TI LOCALIZED CRYSTAL ROTATION IN GUM METAL AT IDEAL STRENGTH
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 2: MATERIALS PROPERTIES, CHARACTERIZATION, AND MODELING
LA English
DT Proceedings Paper
CT Symposium on Materials Properties, Characterization and Modeling from
141st TMS Annual Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE Gum Metal; ideal strength; crystal rotation
ID PLASTIC-DEFORMATION; NANOPILLARS
AB Localized crystal rotation in a multifunctional Ti-36Nb-2Ta-3Zr-0.3O alloy (mass %), Gum Metal, was analyzed in a nano-pillar specimen during in situ nano-compression test. The resolved shear stress in the nano-pillar approaches its ideal shear strength during the compression test. The diffraction patterns during compressive deformation showed that crystal rotation of as much as 30 degrees occurs continuously in the small deformed area of the pillar specimen. Such crystal rotation was generated just after the onset of plastic deformation, and the rotation angle increased gradually during plastic deformation. It does seem clear that heterogeneous plastic shear contributes significantly to the substantial local lattice rotation, while the large available elastic deformation could support the heterogeneous plastic deformation without catastrophic failure. The local crystal rotation behavior is also discussed in relation to the shear orientation and the Schmid factor in the loading direction. The overall deformation pattern resembles that observed in similar experiments on metallic glasses.
C1 [Kuramoto, S.; Setoyama, D.; Furuta, T.] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan.
[Withey, E.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA.
[Morris, J. W., Jr.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA.
RP Kuramoto, S (reprint author), Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan.
FU US National Science Foundation [DMR 1105081]; Toyota Motor Corporation
under University of California, Berkeley
FX We thank Dr. N. Nagasako in Toyota Central R&D Laboratories Inc. for
discussions on deformation behavior of Gum Metal at ideal strength. JWM
acknowledges support from the US National Science Foundation under grant
DMR 1105081, and from Toyota Motor Corporation under a grant to the
University of California, Berkeley.
NR 11
TC 0
Z9 0
U1 0
U2 5
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35700-2; 978-1-118-29609-7
PY 2012
BP 675
EP 682
PG 8
WC Nanoscience & Nanotechnology; Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Metallurgy & Metallurgical
Engineering
GA BCV71
UT WOS:000311607900083
ER
PT B
AU Mamun, MA
Farha, AH
Ufuktepe, Y
Elsayed-Ali, HE
Elmustafa, AA
AF Mamun, M. A.
Farha, A. H.
Ufuktepe, Y.
Elsayed-Ali, H. E.
Elmustafa, A. A.
GP TMS
TI INVESTIGATION OF THE CRYSTAL STRUCTURE ON THE NANOMECHANICAL PROPERTIES
OF PULSED LASER DEPOSITED NBN THIN FILMS
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 2: MATERIALS PROPERTIES, CHARACTERIZATION, AND MODELING
LA English
DT Proceedings Paper
CT Symposium on Materials Properties, Characterization and Modeling from
141st TMS Annual Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE NbN; PLD; Nanoindentation; Hardness; Modulus; Nanomechanical properties;
XRD; AFM; SEM; EPMA; Crystal structure
ID MECHANICAL-PROPERTIES; PHASE
AB The nanomechanical properties of NbN/Nb deposited by pulsed laser deposition (PLD) were investigated as a function of the film/substrate crystal structure. In addition to the beta-Nb2N phase, the X-ray diffraction shows peaks correspond to delta-NbN cubic and delta '-NbN hexagonal phases. Several samples were tested of varied crystal structure between dominant cubic to dominant hexagonal. X-ray diffraction analysis, scanning electron microscopy, atomic force microscopy were employed to characterize their phases, microstructure, and surface morphology. Nanoindentation was used to investigate the nanomechanical properties of the films. A Nanoindenter XP equipped with a DCM II head was used in conjunction with the continuous stiffness method (CSM) in depth and load control modes to evaluate the hardness and modulus of the NbN thin films as a function of the crystal structure. The results show that there are clear effects of the crystal structure on the elastic modulus and hardness of the PLD-grown NbN films.
C1 [Mamun, M. A.; Elmustafa, A. A.] Old Dominion Univ, Dept Mech Engn, Norfolk, VA 23529 USA.
[Farha, A. H.; Elsayed-Ali, H. E.] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
[Mamun, M. A.; Farha, A. H.; Elsayed-Ali, H. E.; Elmustafa, A. A.] Appl Res Ctr, Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Ufuktepe, Y.] Cukurova Univ, Dept Phys, Adana TR-01330, Turkey.
RP Mamun, MA (reprint author), Old Dominion Univ, Dept Mech Engn, Norfolk, VA 23529 USA.
NR 15
TC 0
Z9 0
U1 0
U2 6
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35700-2; 978-1-118-29609-7
PY 2012
BP 715
EP 722
PG 8
WC Nanoscience & Nanotechnology; Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Metallurgy & Metallurgical
Engineering
GA BCV71
UT WOS:000311607900088
ER
PT B
AU Mamun, MA
Tapily, K
Moutanabbir, O
Gu, D
Baumgart, H
Elmustafa, AA
AF Mamun, M. A.
Tapily, K.
Moutanabbir, O.
Gu, D.
Baumgart, H.
Elmustafa, A. A.
GP TMS
TI NANOMECHANICAL PROPERTIES OF HYDROGEN IMPLANTED AIN FOR LAYER TRANSFER
BY ION-INDUCED SPLITTING
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 2: MATERIALS PROPERTIES, CHARACTERIZATION, AND MODELING
LA English
DT Proceedings Paper
CT Symposium on Materials Properties, Characterization and Modeling from
141st TMS Annual Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE AIN; Hydrogen-fluence; Hydrogen implantation; Nanoindentation; Hardness;
Modulus; AFM; TEM; Crystal structure
AB The nanomechanical and structural properties of epitaxially grown AIN were investigated as a function of different Hydrogen-fluences and thermal evolution by nanoindentation, atomic force microscopy, and high resolution transmission electron microscopy. A 2 mu m thick AIN layer was epitaxially grown on sapphire substrates. The nanomechanical properties were measured using a Nano Indenter (R) XP by Agilent. The AIN samples were implanted with hydrogen ions at 50 keV with various fluences ranging from 0.5 x 10(17)cm(-2) to 3 x 10(17)cm(-2). The modulus and hardness were carefully determined for each sample. A virgin non-implanted AIN sample was also used as benchmarking. The samples were then annealed in air at temperatures ranging from 300 degrees C to 600 degrees C for 5 min to study the influence of pre-layer splitting treatments on the nanomechanical properties. High resolution transmission electron microscopy (TEM) cross-sections are presented to corroborate the findings from nanoindentation analysis. There is a clear dependence of the hardness on implanted hydrogen dose. As the hydrogen dose increases as received AIN sample hardens. Once the H implantation was introduced, the hardness increased from 18 GPa for the virgin sample to similar to 25 GPa for the highest fluence of 3x10(17) H cm(-2).
C1 [Mamun, M. A.; Elmustafa, A. A.] Old Dominion Univ, Dept Mech & Aerosp Engn, Norfolk, VA 23529 USA.
[Tapily, K.; Gu, D.; Baumgart, H.] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA.
[Mamun, M. A.; Tapily, K.; Gu, D.; Baumgart, H.; Elmustafa, A. A.] Appl Res Ctr, Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA.
[Moutanabbir, O.] Max Plank Inst Microstruct Phys, Halle, Germany.
RP Mamun, MA (reprint author), Old Dominion Univ, Dept Mech & Aerosp Engn, Norfolk, VA 23529 USA.
RI Moutanabbir, Oussama/A-4001-2009
NR 5
TC 0
Z9 0
U1 0
U2 1
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35700-2; 978-1-118-29609-7
PY 2012
BP 723
EP 730
PG 8
WC Nanoscience & Nanotechnology; Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Metallurgy & Metallurgical
Engineering
GA BCV71
UT WOS:000311607900089
ER
PT J
AU Knezevic, M
McCabe, RJ
Lebensohn, RA
Tome, CN
Mihaila, B
AF Knezevic, Marko
McCabe, Rodney J.
Lebensohn, Ricardo A.
Tome, Carlos N.
Mihaila, Bogdan
GP TMS
TI FINITE ELEMENT IMPLEMENTATION OF A SELF-CONSISTENT POLYCRYSTAL
PLASTICITY MODEL: APPLICATION TO alpha-URANIUM
SO TMS 2012 141ST ANNUAL MEETING & EXHIBITION - SUPPLEMENTAL PROCEEDINGS,
VOL 2: MATERIALS PROPERTIES, CHARACTERIZATION, AND MODELING
LA English
DT Proceedings Paper
CT Symposium on Materials Properties, Characterization and Modeling from
141st TMS Annual Meeting and Exhibition
CY MAR 11-15, 2012
CL Orlando, CA
SP TMS
DE Uranium; Constitutive Modeling; Finite Element Method
ID DEFORMATION; TEXTURE; EVOLUTION
AB We present an improved implementation of the viscoplastic self-consistent (VPSC) polycrystalline model in an implicit finite element (FE) framework, which accounts for a dislocation-based hardening law for multiple slip and twinning modes at the micro-scale crystal level. The model is applied to simulate at the macro-scale the highly anisotropic mechanical response of wrought alpha-uranium. In doing this, a finite element integration point is considered as a polycrystalline material point, whose meso-scale mechanical response is obtained by the mean-field VPSC homogenization scheme. Simple compression, simple tension, and simple shear tests on polycrystalline wrought uranium are used to demonstrate the accuracy of the implemented model.
C1 [Knezevic, Marko; McCabe, Rodney J.; Lebensohn, Ricardo A.; Tome, Carlos N.; Mihaila, Bogdan] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RP Knezevic, M (reprint author), Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA.
RI Mihaila, Bogdan/D-8795-2013; Lebensohn, Ricardo/A-2494-2008
OI Mihaila, Bogdan/0000-0002-1489-8814; Lebensohn,
Ricardo/0000-0002-3152-9105
NR 9
TC 9
Z9 9
U1 1
U2 6
PU MINERALS, METALS & MATERIALS SOC
PI WARRENDALE
PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA
BN 978-1-118-35700-2
PY 2012
BP 789
EP 796
PG 8
WC Nanoscience & Nanotechnology; Metallurgy & Metallurgical Engineering
SC Science & Technology - Other Topics; Metallurgy & Metallurgical
Engineering
GA BCV71
UT WOS:000311607900097
ER
PT S
AU Stamper-Kurn, DM
Thywissen, JH
AF Stamper-Kurn, Dan M.
Thywissen, J. H.
BE Levin, K
Fetter, AL
StamperKurn, DM
TI EXPERIMENTAL METHODS OF ULTRACOLD ATOMIC PHYSICS
SO ULTRACOLD BOSONIC AND FERMIONIC GASES
SE Contemporary Concepts of Condensed Matter Science
LA English
DT Article; Book Chapter
ID BOSE-EINSTEIN CONDENSATE; FESHBACH RESONANCES; OPTICAL LATTICES; SINGLE
ATOMS; GAS; SPECTROSCOPY; SCATTERING; MOLECULES; CLOUDS; LIGHT
C1 [Stamper-Kurn, Dan M.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Stamper-Kurn, Dan M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
[Thywissen, J. H.] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.
[Thywissen, J. H.] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada.
RP Stamper-Kurn, DM (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
RI Stamper-Kurn, Dan/B-5442-2015; Thywissen, Joseph/E-8235-2010
OI Stamper-Kurn, Dan/0000-0002-4845-5835; Thywissen,
Joseph/0000-0002-7007-8204
NR 65
TC 1
Z9 1
U1 0
U2 1
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1572-0934
BN 978-0-444-53862-8
J9 CONT CONCEPT CONDENS
PY 2012
BP 1
EP 26
DI 10.1016/B978-0-444-53857-4.00001-5
PG 26
WC Physics, Condensed Matter
SC Physics
GA BCT00
UT WOS:000311306500003
ER
PT S
AU Fetter, AL
Levin, K
Stamper-Kurn, DM
AF Fetter, Alexander L.
Levin, Kathryn
Stamper-Kurn, Dan M.
BE Levin, K
Fetter, AL
StamperKurn, DM
TI Ultracold Bosonic and Fermionic Gases PREFACE
SO ULTRACOLD BOSONIC AND FERMIONIC GASES
SE Contemporary Concepts of Condensed Matter Science
LA English
DT Editorial Material; Book Chapter
C1 [Fetter, Alexander L.] Stanford Univ, Geballe Lab Adv Mat, Dept Phys, Stanford, CA 94305 USA.
[Levin, Kathryn] Univ Chicago, James Franck Inst, Chicago, IL 60637 USA.
[Stamper-Kurn, Dan M.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA.
[Fetter, Alexander L.] Stanford Univ, Geballe Lab Adv Mat, Dept Appl Phys, Stanford, CA 94305 USA.
[Stamper-Kurn, Dan M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA.
RP Fetter, AL (reprint author), Stanford Univ, Geballe Lab Adv Mat, Dept Phys, Stanford, CA 94305 USA.
RI Stamper-Kurn, Dan/B-5442-2015
OI Stamper-Kurn, Dan/0000-0002-4845-5835
NR 0
TC 0
Z9 0
U1 0
U2 0
PU ELSEVIER SCIENCE BV
PI AMSTERDAM
PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
SN 1572-0934
BN 978-0-444-53862-8
J9 CONT CONCEPT CONDENS
PY 2012
BP XI
EP XIII
PG 3
WC Physics, Condensed Matter
SC Physics
GA BCT00
UT WOS:000311306500002
ER
PT J
AU Gong, KP
Cho, Y
Vukmirovic, MB
Liu, P
Ma, C
Su, D
Adzic, RR
AF Gong, Kuanping
Cho, YongMan
Vukmirovic, Miomir B.
Liu, Ping
Ma, Chao
Su, Dong
Adzic, Radoslav R.
TI Tetrahedral Palladium Nanocrystals: A New Support for Platinum Monolayer
Electrocatalysts with High Activity and Stability in the Oxygen
Reduction Reaction
SO ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH
IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
LA English
DT Article
DE Tetrahedral Palladium; Platinum Monolayer; Oxygen Reduction Reaction;
DFT
ID CATALYTIC-ACTIVITY; SHELL; SCIENCE; METALS; SIZE
AB The recent availability of tetrahedral palladium (Pd-TH) nanocrystals with cleaned surfaces allowed us to evaluate their facet-specific electrochemical properties as a new support of platinum monolayer (Pt-ML) catalysts. The Pd-Pt-ML core-shell electrocatalyst was examined by combining structural analyses and Density Functional Theory (DFT) with electrochemical techniques. The surfaces of the Pd-TH core are composed of (Ill) facets wherein the Pd atoms are highly coordinated and have low surface energy. Our results revealed that in comparison with sphere Pd (Pd-SP)-supported Pt-ML or pure Pt, the Pd-TH-supported Pt-ML features more surface contraction and a downshift of d-band relative to the Fermi level. These geometric- and electronic-effects determine the higher activity of Pt-ML/Pd-TH/C for the oxygen reduction reaction (ORR) compared to that of Pt-ML/Pd-SP/C. This shape-property interdependence illuminated new approaches to basic- and applied- research on Pt-based ORR electrocatalysts of significant importance to the widespread use of fuel cells.
C1 [Gong, Kuanping; Cho, YongMan; Vukmirovic, Miomir B.; Liu, Ping; Adzic, Radoslav R.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
[Ma, Chao; Su, Dong] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA.
[Cho, YongMan] SABIC Technol Ctr, Chem Catalysis Sect, Riyadh 11551, Saudi Arabia.
RP Adzic, RR (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA.
EM adzic@bnl.gov
RI Su, Dong/A-8233-2013; Choi, YongMan/N-3559-2014; Ma, Chao/J-4569-2015
OI Su, Dong/0000-0002-1921-6683; Choi, YongMan/0000-0003-4276-1599;
FU U. S. Department of Energy, Divisions of Chemical an Material Sciences
[DE-AC02-98CH10886]; Office of Science of the U. S. DOE
[DE-AC02-05CH11231]
FX This work is supported by U. S. Department of Energy, Divisions of
Chemical an Material Sciences, under the Contract No. DE-AC02-98CH10886.
We thank the National Energy Research Scientific Computing Center
(NERSC), which is supported by the Office of Science of the U. S. DOE
under Contract No. DE-AC02-05CH11231 and BNL's Center for Functional
Nanomaterials (CFN) for computational time.
NR 28
TC 8
Z9 8
U1 5
U2 51
PU OLDENBOURG VERLAG
PI MUNICH
PA LEKTORAT MINT, POSTFACH 80 13 60, D-81613 MUNICH, GERMANY
SN 0942-9352
J9 Z PHYS CHEM
JI Z. Phys. Chemie-Int. J. Res. Phys. Chem. Chem. Phys.
PY 2012
VL 226
IS 9-10
BP 1025
EP 1038
DI 10.1524/zpch.2012.0239
PG 14
WC Chemistry, Physical
SC Chemistry
GA 047WC
UT WOS:000311871200014
ER
PT J
AU Beerwinkle, AD
Singh, RP
Kirikera, GR
AF Beerwinkle, Austin D.
Singh, Raman P.
Kirikera, Goutham R.
GP IEEE
TI Simulating Quartz Resonators at High Temperature and Pressure:
Limitations Regarding Lack of Temperature Derivatives of Third-Order
Elastic Coefficients
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
ID BEHAVIOR
AB It is known that the currently available anisotropic material properties of quartz allow for finite element simulations that closely match experimental resonator frequency response with respect to both changes in pressure near ambient temperatures and changes in temperature near ambient pressures. However, as observed in the current work, such models can be shown to deviate from experimental frequency values when high temperatures and pressures are applied simultaneously to the resonator. A three-dimensional finite element model was developed based on the linear field equations for superposed small vibrations onto nonlinear thermoelastic stressed media given by Lee and Yong [1]. The frequency response of the model was then benchmarked to experimental data from a commercially available quartz pressure sensor with temperature ranging from 50 degrees C to 200 degrees C and pressure from 14 psi to 20,000 psi. Such conditions directly correspond to current uses of quartz resonators as temperature and pressure sensors for the oil and gas industry.
The normalized frequency response to the change in external pressure matched very well with experimental data for lower temperatures, having a maximum deviation of only 7.5% at 20,000 psi, when assuming constant 50 degrees C temperature. However, the same deviation grew to about 25.7% at 20,000 psi assuming a higher 200 degrees C constant temperature. Similarly, the temperature-frequency response from 50 degrees C to 200 degrees C matched the experimental trend well for lower pressures, but this agreement deteriorated as pressure increased. It is hypothesized that changes in the nonlinear elastic coefficients with temperature yield the primary source of error at high combined temperature and pressure. These changes, which are quantified in the temperature derivatives of the third-order elastic coefficients, are not currently available in literature and thus are not supported by the model.
C1 [Beerwinkle, Austin D.] Sandia Natl Labs, Albuquerque, NM 87185 USA.
RP Beerwinkle, AD (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
NR 6
TC 0
Z9 0
U1 0
U2 0
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 349
EP 352
DI 10.1109/ULTSYM.2011.0083
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400082
ER
PT J
AU Chin, TL
Greve, DW
Oppenheim, IJ
AF Chin, T. -L.
Greve, D. W.
Oppenheim, Irving J.
GP IEEE
TI Compact Antennas for Wireless Langasite SAW Sensors
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
DE Surface acoustic wave; sensor; temperature; langasite; wireless
AB Wireless surface acoustic wave sensors are an attractive solution to harsh environment sensing. In this paper we explore several different compact antenna designs for use with langasite SAW devices. We find that folded dipole and meander dipole antennas represent a good compromise between physical size and efficiency of coupling between the antenna and the SAW device. Wireless operation has been achieved up to 650 degrees C with a meander dipole that is about one quarter wavelength in the largest dimension.
C1 [Chin, T. -L.; Greve, D. W.; Oppenheim, Irving J.] Natl Energy Technol Lab, Pittsburgh, PA USA.
RP Chin, TL (reprint author), Natl Energy Technol Lab, Pittsburgh, PA USA.
NR 7
TC 0
Z9 0
U1 1
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 826
EP 829
DI 10.1109/ULTSYM.2011.0202
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400199
ER
PT J
AU Olsson, RH
Ziaei-Moayyed, M
Kim, B
Reinke, C
Su, MF
Hopkins, P
Soliman, YM
Goettler, DF
Leseman, ZC
El-Kady, I
AF Olsson, Roy H., III
Ziaei-Moayyed, Maryam
Kim, Bongsang
Reinke, Charles
Su, Mehmet F.
Hopkins, Patrick
Soliman, Yasser M.
Goettler, Drew F.
Leseman, Zayd C.
El-Kady, Ihab
GP IEEE
TI Micro and Nano Fabricated Phononic Crystals: Technology and Applications
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
DE Acoustic Bandgap; Elastic Bandgap; Microelectromechanical Systems;
Microfabrication; Phononic Bandgap; Phononic Crystal; Phononic Crystal
Cavity
ID BAND-GAP
AB With the application of microfabrication techniques, phononic crystals have been transformed over the past decade: from hand assembled millimeter-to-meter scale crystals consisting of metal balls in water or epoxy, to precisely machined crystals with sub-micron features operating at frequencies in excess of 1 GHz. This paper reviews the contributions of Sandia National Laboratories to micro and nano scale phononic crystal devices including: the integration of piezoelectric transducers, the choice of phononic crystal materials, phononic crystal design, and the application of phononic crystals to radio frequency and thermal management applications.
C1 [Olsson, Roy H., III; Ziaei-Moayyed, Maryam; Kim, Bongsang; Reinke, Charles; Hopkins, Patrick; El-Kady, Ihab] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
[Su, Mehmet F.; Soliman, Yasser M.; Goettler, Drew F.; Leseman, Zayd C.; El-Kady, Ihab] Univ New Mexico, Albuquerque, NM USA.
RP Olsson, RH (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA.
RI El-Kady, Ihab/D-2886-2013;
OI El-Kady, Ihab/0000-0001-7417-9814; Reinke, Charles/0000-0002-5869-9817
FU Laboratory Directed Research and Development (LDRD) program at Sandia
National Laboratories; DARPA Chip Scale Spectrum Analyzers (CSSA)
Program; United States Department of Energy's National Nuclear Security
Administration [DE-AC04-94AL85000]
FX This work was supported by the Laboratory Directed Research and
Development (LDRD) program at Sandia National Laboratories and by the
DARPA Chip Scale Spectrum Analyzers (CSSA) Program. Sandia National
Laboratories is a multiprogram laboratory operated by the Sandia
Corporation, Lockheed Martin Company, for the United States Department
of Energys National Nuclear Security Administration under contract
DE-AC04-94AL85000.
NR 26
TC 0
Z9 0
U1 0
U2 9
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 983
EP 988
DI 10.1109/ULTSYM.2011.0241
PG 6
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400224
ER
PT J
AU Kim, B
Nguyen, J
Reinke, C
Shaner, E
Harris, CT
El-Kady, I
Olsson, RH
AF Kim, Bongsang
Janet Nguyen
Reinke, Charles
Shaner, Eric
Harris, C. Thomas
El-Kady, Ihab
Olsson, Roy H., III
GP IEEE
TI Thermal Conductivity Manipulation in Lithographically Patterned Single
Crystal Silicon Phononic Crystal Structures
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
DE phononic crystals; phonon scattering; boundary scattering; thermal
conductivity; heat transfer; thermal model
AB The thermal conductivity of single crystal silicon was engineered using lithographically formed phononic crystals. Specifically, sub-micron periodic through-holes were patterned in 500nm-thick silicon membranes to construct phononic crystals, and through phonon scattering enhancement, heat transfer was significantly reduced. The thermal conductivity of silicon phononic crystals was measured as low as 32.6W/mK, which is a similar to 75% reduction compared to bulk silicon thermal conductivity [1]. This corresponds to a 37% reduction even after taking into account the contributions of the thin-film and volume reduction effects, while the electrical conductivity was reduced only by as much as the volume reduction effect. The demonstrated method uses conventional lithography-based technologies that are directly applicable to diverse micro/nano-scale devices, leading toward huge performance improvements where heat management is important.
C1 [Kim, Bongsang; Janet Nguyen; Reinke, Charles; Shaner, Eric; Harris, C. Thomas; El-Kady, Ihab; Olsson, Roy H., III] Sandia Natl Labs, Adv MEMS Dept, Albuquerque, NM 87185 USA.
RP Kim, B (reprint author), Sandia Natl Labs, Adv MEMS Dept, POB 5800, Albuquerque, NM 87185 USA.
EM bonkim@sandia.gov
RI El-Kady, Ihab/D-2886-2013;
OI El-Kady, Ihab/0000-0001-7417-9814; Reinke, Charles/0000-0002-5869-9817
NR 8
TC 0
Z9 0
U1 0
U2 2
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 1308
EP 1311
DI 10.1109/ULTSYM.2011.0323
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400305
ER
PT J
AU Mitri, FG
Sinha, DN
AF Mitri, Farid G.
Sinha, Dipen N.
GP IEEE
TI Creating a nanocomposite metamaterial structure using the radiation
force of ultrasound standing waves
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
DE ultrasound standing wave; radiation force; nanoparticles; X-Ray
micro-computed tomography
ID ACOUSTIC METAMATERIALS; DIFFRACTION LIMIT; FABRICATION; DEVICES
AB We propose to use the method based on the acoustic radiation force of counter-propagating (or standing) waves (at 1 MHz) generated inside a resonator cavity to direct the organization of nanoparticle clusters in a host fluid and create periodic arrays that are solidified in a bulk matrix. Gradually, the periodic pattern becomes permanent with full cure of the epoxy matrix so as to form a 3D periodic structure. We also show particle assembly by superimposing two ultrasound waves propagating in perpendicular directions. Furthermore, x-ray micro-computed tomography is used as a quality control tool to map the internal structure and characterize each nanocomposite. The fabrication method is a fast, cost-effective, versatile tool and not limited to a particular frequency so as to create metamaterials with different periodicities. The particles may consist of any material (metal, insulator, semiconductor, superconductor, nanowires, or tubes, CNTs, etc.), and other geometries (cylindrical, hexagonal, and other symmetries) may be also possible. Though not investigated here, the ultimate aim is to use the present results as a base for the development of finite-element models which take into account all the structural features to explore the various metamaterial functionalities in optical, acoustical, thermal, or even gravitational applications.
C1 [Mitri, Farid G.; Sinha, Dipen N.] Los Alamos Natl Lab, Acoust & Sensor Technol Team, MPA Sensors & Electrochem Devices 11, Los Alamos, NM 87545 USA.
RP Mitri, FG (reprint author), Los Alamos Natl Lab, Acoust & Sensor Technol Team, MPA Sensors & Electrochem Devices 11, Los Alamos, NM 87545 USA.
EM mitri@lanl.gov; sinha@lanl.gov
OI Sinha, Dipen/0000-0002-3606-7907
NR 15
TC 1
Z9 1
U1 2
U2 9
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 1556
EP 1558
DI 10.1109/ULTSYM.2011.0386
PG 3
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400367
ER
PT J
AU Labyed, Y
Huang, LJ
AF Labyed, Yassin
Huang, Lianjie
GP IEEE
TI Detecting Small Targets Using Windowed Time-Reversal MUSIC Imaging: A
Phantom Study
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
AB Time reversal with multiple signal classification (TR-MUSIC) is a super-resolution imaging method for detecting targets smaller than the ultrasound wavelength. This method is valid only when the number of targets is fewer than the number of transducer elements used to interrogate the medium. We develop a windowed TR-MUSIC imaging method for obtaining high-resolution images even when the number of targets exceeds the number of transducer elements. Our method is based on dividing the imaging plane into sub-regions and applying the TR-MUSIC algorithm to the windowed backscattered signals corresponding to each sub-region. The images of all sub-regions are then combined to form the total image. We use tissue-mimicking phantom data acquired with a synthetic-aperture ultrasound system to demonstrate the significantly improved quality and resolution of the images obtained with the windowed TR-MUSIC method, particularly when the number of targets are larger than the number of transducer elements.
C1 [Labyed, Yassin; Huang, Lianjie] Los Alamos Natl Lab, Los Alamos, NM 87545 USA.
RP Labyed, Y (reprint author), Los Alamos Natl Lab, Mail Stop D443, Los Alamos, NM 87545 USA.
EM yassin@lanl.gov; ljh@lanl.gov
NR 7
TC 0
Z9 0
U1 0
U2 4
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 1579
EP 1582
DI 10.1109/ULTSYM.2011.0392
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400373
ER
PT J
AU Griffin, JW
Posakony, GJ
Harris, RV
Baldwin, DL
Jones, AM
Bond, LJ
AF Griffin, J. W.
Posakony, G. J.
Harris, R. V.
Baldwin, D. L.
Jones, A. M.
Bond, L. J.
GP IEEE
TI High Temperature Ultrasonic Transducers for In-Service Inspection of
Liquid Metal Fast Reactors
SO 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)
LA English
DT Proceedings Paper
CT IEEE International Ultrasonics Symposium (IUS)
CY OCT 18-21, 2011
CL Orlando, FL
SP IEEE, PZFlex, Avago Technologies
DE fast-spectrum reactors; inspection; liquid metal; ultrasonic
AB In-service inspection of liquid metal (sodium) fast reactors requires the use of ultrasonic transducers capable of operating at high temperatures (>200 degrees C), high gamma radiation fields, and the chemically reactive liquid sodium environment. In the early- to mid-1970s, the U.S. Atomic Energy Commission supported development of high-temperature, submersible single-element transducers, used for scanning and under-sodium imaging in the Fast Flux Test Facility and the Clinch River Breeder Reactor. Current work is building on this technology to develop the next generation of high-temperature linear ultrasonic transducer arrays for under-sodium viewing and in-service inspections.
C1 [Griffin, J. W.; Posakony, G. J.; Harris, R. V.; Baldwin, D. L.; Jones, A. M.; Bond, L. J.] Pacific NW Natl Lab, Richland, WA 99352 USA.
RP Griffin, JW (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA.
EM jeff.griffin@pnnl.gov
NR 6
TC 0
Z9 0
U1 0
U2 3
PU IEEE
PI NEW YORK
PA 345 E 47TH ST, NEW YORK, NY 10017 USA
BN 978-1-4577-1252-4
PY 2012
BP 1924
EP 1927
DI 10.1109/ULTSYM.2011.0479
PG 4
WC Engineering, Electrical & Electronic
SC Engineering
GA BCD91
UT WOS:000309918400459
ER
EF