A diamond detector for inertial confinement fusion X-ray bang-time measurements at the National Ignition Facility

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An instrument has been developed to measure X-ray bang-time for inertial confinement fusion capsules; the time interval between the start of the laser pulse and peak X-ray emission from the fuel core. The instrument comprises chemical vapor deposited polycrystalline diamond photoconductive X-ray detectors with highly ordered pyrolytic graphite X-ray monochromator crystals at the input. Capsule bang-time can be measured in the presence of relatively high thermal and hard X-ray background components due to the selective band pass of the crystals combined with direct and indirect X-ray shielding of the detector elements. A five channel system is being commissioned at the ... continued below

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MacPhee, A G; Brown, C; Burns, S; Celeste, J; Glenzer, S H; Hey, D et al. November 9, 2010.

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An instrument has been developed to measure X-ray bang-time for inertial confinement fusion capsules; the time interval between the start of the laser pulse and peak X-ray emission from the fuel core. The instrument comprises chemical vapor deposited polycrystalline diamond photoconductive X-ray detectors with highly ordered pyrolytic graphite X-ray monochromator crystals at the input. Capsule bang-time can be measured in the presence of relatively high thermal and hard X-ray background components due to the selective band pass of the crystals combined with direct and indirect X-ray shielding of the detector elements. A five channel system is being commissioned at the National Ignition Facility at Lawrence Livermore National Laboratory for implosion optimization measurements as part of the National Ignition Campaign. Characteristics of the instrument have been measured demonstrating that X-ray bang-time can be measured with {+-} 30ps precision, characterizing the soft X-ray drive to +/- 1eV or 1.5%.

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PDF-file: 18 pages; size: 3 Mbytes

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  • Journal Name: Journal of Instrumentation, vol. 6, n/a, February 1, 2011, P02009; Journal Volume: 6

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  • Report No.: LLNL-JRNL-463743
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1018776
  • Archival Resource Key: ark:/67531/metadc847147

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 9, 2010

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 5, 2016, 2:15 p.m.

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MacPhee, A G; Brown, C; Burns, S; Celeste, J; Glenzer, S H; Hey, D et al. A diamond detector for inertial confinement fusion X-ray bang-time measurements at the National Ignition Facility, article, November 9, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc847147/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.