Optimization of the gamma reaction history diagnostic for double-shell pusher areal density and reaction history measurements on the National Ignition Facility

Dwyer, Robert Harrison; Meaney, Kevin Daniel; Geppert-Kleinrath, Hermann; Loomis, Eric Nicholas; Robey, Harry F.; Mohamed, Zaarah Lyla; Fry, Cathleen Elizabeth; Kim, Yong Ho

doi:10.1063/5.0189085

Optimization of the gamma reaction history diagnostic for double-shell pusher areal density and reaction history measurements on the National Ignition Facility

Journal Article · Mon Mar 18 00:00:00 EDT 2024 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0189085· OSTI ID:2350645

^[1]; ^[2]; ^[2]; ^[2]; ^[2]; ^[2]; ^[2]; ^[2]

Univ. of Rochester, NY (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

The double-shell inertial confinement fusion campaign, which consists of an aluminum ablator, a foam cushion, a high-Z pusher (tungsten or molybdenum), and liquid deuterium–tritium (DT) fuel, aims for its first DT filled implosions on the National Ignition Facility (NIF) in 2024. The high-Z, high density pusher does not allow x-rays to escape the double-shell capsule. Therefore, nuclear diagnostics such as the Gamma Reaction History (GRH) diagnostic on the NIF are crucial for understanding high-Z implosion performance. To optimize the GRH measurement of fusion reaction history and the pusher’s areal density, the MCNP6.3-based forward model of the detector was built. When calculating the neutron-induced inelastic gamma ray production, the interaction of neutrons with the compressed fuel was additionally included. By folding the calculated gamma ray spectrum output and the previously calibrated GRH detector responses, the optimum set of GRH energy thresholds for measuring the pusher areal density is determined to be 2.9 and 6.3 MeV for DT double-shell experiments. In addition, the effect of the down-scattering of neutrons on the gamma ray spectrum, the minimum required yield for measurements, and the attenuation of the gamma rays through the pusher are analyzed.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

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

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2350645

Report Number(s):: LA-UR--23-33214

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 95; ISSN 0034-6748

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

Country of Publication:: United States

Language:: English

References (22)

Performance Characteristics of HYDRA – A Multi-physics Simulation Code from LLNL Langer, Steven H.; Karlin, Ian; Marinak, Michael M. Lecture Notes in Computer Science https://doi.org/10.1007/978-3-319-17353-5_15	book	January 2015
ENDF/B-VIII.0: The 8 th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering Data Brown, D. A.; Chadwick, M. B.; Capote, R. Nuclear Data Sheets, Vol. 148 https://doi.org/10.1016/j.nds.2018.02.001	journal	February 2018
In situ calibration of the Gamma Reaction History instrument using reference samples (“pucks”) for areal density measurements Hoffman, N. M.; Herrmann, H. W.; Kim, Y. H. EPJ Web of Conferences, Vol. 59 https://doi.org/10.1051/epjconf/20135913019	journal	January 2013
Diagnosing inertial confinement fusion gamma ray physics (invited) Herrmann, H. W.; Hoffman, N.; Wilson, D. C. Review of Scientific Instruments, Vol. 81, Issue 10 https://doi.org/10.1063/1.3495770	journal	October 2010
Neutron spectrometry—An essential tool for diagnosing implosions at the National Ignition Facility (invited) Johnson, M. Gatu; Frenje, J. A.; Casey, D. T. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4728095	journal	October 2012
Multi-shot analysis of the gamma reaction history diagnostic Sayre, D. B.; Bernstein, L. A.; Church, J. A. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4729492	journal	October 2012
Pulse dilation gas Cherenkov detector for ultra-fast gamma reaction history at the NIF (invited) Geppert-Kleinrath, H.; Herrmann, H. W.; Kim, Y. H. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039377	journal	October 2018
Design considerations for indirectly driven double shell capsules Montgomery, D. S.; Daughton, W. S.; Albright, B. J. Physics of Plasmas, Vol. 25, Issue 9 https://doi.org/10.1063/1.5042478	journal	September 2018
Experimental study of energy transfer in double shell implosions Merritt, E. C.; Sauppe, J. P.; Loomis, E. N. Physics of Plasmas, Vol. 26, Issue 5 https://doi.org/10.1063/1.5086674	journal	May 2019
Improved inertial confinement fusion gamma reaction history ¹² C gamma-ray signal by direct subtraction Meaney, K. D.; Kim, Y. H.; Herrmann, H. W. Review of Scientific Instruments, Vol. 90, Issue 11 https://doi.org/10.1063/1.5092501	journal	November 2019
Improved calibration of the OMEGA gas Cherenkov detector Zylstra, A. B.; Herrmann, H. W.; Kim, Y. H. Review of Scientific Instruments, Vol. 90, Issue 12 https://doi.org/10.1063/1.5128765	journal	December 2019
Carbon ablator areal density at fusion burn: Observations and trends at the National Ignition Facility Meaney, K. D.; Kim, Y.; Geppert-Kleinrath, H. Physics of Plasmas, Vol. 27, Issue 5 https://doi.org/10.1063/1.5139913	journal	May 2020
Time resolved ablator areal density during peak fusion burn on inertial confinement fusion implosions Meaney, K. D.; Hoffman, N. M.; Kim, Y. Physics of Plasmas, Vol. 28, Issue 3 https://doi.org/10.1063/5.0038206	journal	March 2021
Achieving record hot spot energies with large HDC implosions on NIF in HYBRID-E Kritcher, A. L.; Zylstra, A. B.; Callahan, D. A. Physics of Plasmas, Vol. 28, Issue 7 https://doi.org/10.1063/5.0047841	journal	July 2021
Total fusion yield measurements using deuterium–tritium gamma rays Meaney, K. D.; Kim, Y.; Geppert-Kleinrath, H. Physics of Plasmas, Vol. 28, Issue 10 https://doi.org/10.1063/5.0055846	journal	October 2021
Gamma-ray measurements for inertial confinement fusion applications Kim, Yongho; Herrmann, Hans W. Review of Scientific Instruments, Vol. 94, Issue 4 https://doi.org/10.1063/5.0126969	journal	April 2023
Los Alamos National Laboratory Double Shell Program Target Development Schmidt, Derek William; Donovan, Patrick Mark; Edwards, Stephanie Lynn Fusion Science and Technology, Vol. 79, Issue 7 https://doi.org/10.1080/15361055.2023.2213812	journal	June 2023
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas Frenje, J. A. Plasma Physics and Controlled Fusion, Vol. 62, Issue 2 https://doi.org/10.1088/1361-6587/ab5137	journal	January 2020
ICF gamma-ray reaction history diagnostics Herrmann, H. W.; Young, C. S.; Mack, J. M. Journal of Physics: Conference Series, Vol. 244, Issue 3 https://doi.org/10.1088/1742-6596/244/3/032047	journal	August 2010
C 13 ( n , 2 n γ ) C 12 γ -ray production in the 14–16 MeV incident neutron energy range McEvoy, A. M.; Herrmann, H. W.; Kim, Y. Physical Review C, Vol. 103, Issue 6 https://doi.org/10.1103/physrevc.103.064607	journal	June 2021
Diagnostic signature of the compressibility of the inertial-confinement-fusion pusher Meaney, K. D.; Kim, Y. H.; Geppert-Kleinrath, H. Physical Review E, Vol. 101, Issue 2 https://doi.org/10.1103/physreve.101.023208	journal	February 2020
The National Ignition Facility Diagnostic Set at the Completion of the National Ignition Campaign, September 2012 Kilkenny, J. D.; Bell, P. M.; Bradley, D. K. Fusion Science and Technology, Vol. 69, Issue 1 https://doi.org/10.13182/fst15-173	journal	February 2016

Similar Records

Forward Modeling of Gamma Reaction History Signatures From Anticipated Deuterium-Tritium Filled MagLIF Implosions on Sandia’s Z-Machine

Journal Article · Fri Aug 23 00:00:00 EDT 2024 · IEEE Transactions on Plasma Science · OSTI ID:2477792

Improved inertial confinement fusion gamma reaction history ¹²C gamma-ray signal by direct subtraction

Journal Article · Wed Nov 06 23:00:00 EST 2019 · Review of Scientific Instruments · OSTI ID:1574754

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Double-Shell
Fusion
Gamma detectors
ICF
Inertial confinement fusion
MCNP
Nuclear diagnostics
Nuclear fusion
Plasma
Plasma physics
Thermonuclear fusion
Thermonuclear physics

Optimization of the gamma reaction history diagnostic for double-shell pusher areal density and reaction history measurements on the National Ignition Facility

Citation Formats

References (22)

Similar Records

Related Subjects