Top-level physics requirements and simulated performance of the MRSt on the National Ignition Facility

Kunimune, J. H.; Frenje, J. A.; Berg, G. P. A.; Trosseille, C. A.; Nora, R. C.; Waltz, C. S.; Moore, A. S.; Kilkenny, J. D.; Mackinnon, A. J.

doi:10.1063/5.0040745

Top-level physics requirements and simulated performance of the MRSt on the National Ignition Facility

Journal Article · Wed Mar 03 23:00:00 EST 2021 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0040745· OSTI ID:1860644

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Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Univ. of Notre Dame, IN (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The time-resolving Magnetic Recoil Spectrometer (MRSt) for the National Ignition Facility (NIF) has been identified by the US National Diagnostic Working Group as one of the transformational diagnostics that will reshape the way inertial confinement fusion (ICF) implosions are diagnosed. The MRSt will measure the time-resolved neutron spectrum of an implosion, from which the time-resolved ion temperature, areal density, and yield will be inferred. Top-level physics requirements for the MRSt were determined based on simulations of numerous ICF implosions with varying degrees of alpha heating, P2 asymmetry, and mix. Synthetic MRSt data were subsequently generated for different configurations using Monte–Carlo methods to determine its performance in relation to the requirements. The system was found to meet most requirements at current neutron yields at the NIF. This work was supported by the DOE and LLNL.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344; NA0003868

OSTI ID:: 1860644

Alternate ID(s):: OSTI ID: 1769219

Report Number(s):: LLNL-JRNL-832903; 1049601

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 92; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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