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High-yield magnetic recoil neutron spectrometer on the National Ignition Facility for operation up to 60 MJ.
Gatu Johnson, M; Johnson, T M; Lahmann, B J; Séguin, F H; Sperry, B; Bhandarkar, N; Bionta, R M; Casco, E; Casey, D T; Mackinnon, A J; Masters, N; Moore, A; Nikroo, A; Hoppe, M; Mohammed, R; Sweet, W; Freeman, C; Picciotto, V; Roumell, J; Frenje, J A.
  • Gatu Johnson M; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Johnson TM; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Lahmann BJ; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Séguin FH; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Sperry B; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Bhandarkar N; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bionta RM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Casco E; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Casey DT; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Mackinnon AJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Masters N; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Moore A; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Nikroo A; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hoppe M; General Atomics, San Diego, California 92186, USA.
  • Mohammed R; General Atomics, San Diego, California 92186, USA.
  • Sweet W; General Atomics, San Diego, California 92186, USA.
  • Freeman C; State University of New York at Geneseo, Geneseo, New York 14454, USA.
  • Picciotto V; State University of New York at Geneseo, Geneseo, New York 14454, USA.
  • Roumell J; State University of New York at Geneseo, Geneseo, New York 14454, USA.
  • Frenje JA; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Rev Sci Instrum ; 93(8): 083513, 2022 Aug 01.
Article en En | MEDLINE | ID: mdl-36050054
ABSTRACT
Recent progress at the National Ignition Facility (NIF), with neutron yields of order 1 × 1017, places new constraints on diagnostics used to characterize implosion performance. The Magnetic Recoil neutron Spectrometer (MRS), which is routinely used to measure yield, ion temperature (Tion), and down-scatter ratio (dsr), has been adapted to allow measurements of dsr up to 5 × 1017, and yield and Tion up to 2 × 1018 in the near term with new data processing techniques and conversion foil solutions. This paper presents a solution for extending MRS operation up to a yield of 2 × 1019 (60 MJ) by moving the spectrometer outside of the NIF shield wall. This will not only enhance the upper yield limit by 10× but also improve signal-to-background by 5×.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article