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Title: Cherenkov detector analysis for implosions with multiple nuclear reactions

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.5038901· OSTI ID:1483532
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Atomic Weapons Establishment (AWE), Reading (United Kingdom). Plasma Physics Dept.
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Nuclear reactions that produce γ rays occur in inertial fusion implosions and are commonly measured with Cherenkov detectors. Typically a detector is primarily sensitive to a single reaction, but in some implosions, multiple fusion reactions can occur and are combined in the data. Here we discuss an analysis technique using multiple thresholded detectors to reproduce the individual burn histories from reactions like DT and HT fusion, which is applicable to separated-reactant mix experiments. Finally, requirements for this technique and resulting analysis uncertainties are quantified using synthetic data.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; LANL Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-06NA52396
OSTI ID:
1483532
Alternate ID(s):
OSTI ID: 1459748
Report Number(s):
LA-UR-18-23811
Journal Information:
Review of Scientific Instruments, Vol. 89, Issue 10; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (13)

Progress towards ignition on the National Ignition Facility journal July 2013
Development of the CD Symcap platform to study gas-shell mix in implosions at the National Ignition Facility journal September 2014
Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experiments journal November 2014
Development of the indirect‐drive approach to inertial confinement fusion and the target physics basis for ignition and gain journal November 1995
Atomic mix in directly driven inertial confinement implosions journal November 2011
Development and characterization of sub-100 ps photomultiplier tubes journal October 2010
First Observations of Nonhydrodynamic Mix at the Fuel-Shell Interface in Shock-Driven Inertial Confinement Implosions journal April 2014
Fusion neutrons from the gas–pusher interface in deuterated-shell inertial confinement fusion implosions journal March 1998
Initial performance results of the OMEGA laser system journal January 1997
Measurements of an Ablator-Gas Atomic Mix in Indirectly Driven Implosions at the National Ignition Facility journal January 2014
Effects of Fuel-Shell Mix upon Direct-Drive, Spherical Implosions on OMEGA journal September 2002
Simultaneous measurement of the HT and DT fusion burn histories in inertial fusion implosions journal May 2017
The National Ignition Facility: enabling fusion ignition for the 21st century journal November 2004

Cited By (2)

Improved calibration of the OMEGA gas Cherenkov detector journal December 2019
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas journal January 2020

Figures / Tables (12)

FIG. 1(p. 3)figure FIG. 1
FIG. 2(p. 3)figure FIG. 2
TABLE I(p. 3)table TABLE I
FIG. 3(p. 4)figure FIG. 3
FIG. 4(p. 4)figure FIG. 4
FIG. 5(p. 4)figure FIG. 5
FIG. 6(p. 5)figure FIG. 6
FIG. 7(p. 5)figure FIG. 7
FIG. 8(p. 5)figure FIG. 8
FIG. 10(p. 6)figure FIG. 10
FIG. 9(p. 6)figure FIG. 9
TABLE II(p. 6)table TABLE II

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Cherenkov detectors
data analysis
nuclear reactions and processes
threshold energy
regression analysis
gamma rays
gamma spectra
nuclear fusion