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Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experimentsa)

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4892553· OSTI ID:1244530
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. National Security Technologies, LLC, Los Alamos, NM (United States)
  3. Atomic Weapons Establishment, Berkshire (United Kingdom)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
+ Show Author Affiliations

A new Gas Cherenkov Detector (GCD) with low-energy threshold and high sensitivity, currently known as Super GCD (or GCD-3 at OMEGA), is being developed for use at the OMEGA Laser Facility and the National Ignition Facility (NIF). Super GCD is designed to be pressurized to ≤400 psi (absolute) and uses all metal seals to allow the use of fluorinated gases inside the target chamber. This will allow the gamma energy threshold to be run as low at 1.8 MeV with 400 psi (absolute) of C2F6, opening up a new portion of the gamma ray spectrum. Super GCD operating at 20 cm from TCC will be ~400 × more efficient at detecting DT fusion gammas at 16.7 MeV than the Gamma Reaction History diagnostic at NIF (GRH-6m) when operated at their minimum thresholds.

Research Organization:
National Security Technologies, LLC, Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
DOE Contract Number:
AC52-06NA25946
OSTI ID:
1244530
Report Number(s):
DOE/NV/25946--2225
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 85; ISSN 0034-6748; ISSN RSINAK
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

References (9)

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Observation of high-energy deuterium–tritium fusion gamma rays using gas Cherenkov detectors
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journal November 2003
Conceptual design of the gamma-to-electron magnetic spectrometer for the National Ignition Facility journal November 2014
Observation of d–t fusion gamma rays (invited) journal March 2003
Measurement of DT fusion and neutron-induced gamma-rays using gas Cherenkov Detector journal August 2010
The National Ignition Facility: Laser Performance and First Experiments journal April 2005
Measurement of areal density in the ablators of inertial-confinement-fusion capsules via detection of ablator (n, n′γ) gamma-ray emission journal April 2013
Geant4—a simulation toolkit
  • Agostinelli, S.; Allison, J.; Amako, K.
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journal July 2003
Initial performance results of the OMEGA laser system journal January 1997

Figures / Tables (4)

Figure 2(p. 2)figure Figure 2
Figure-1(p. 2)figure Figure-1
Figure 3(p. 3)figure Figure 3
Figure 4(p. 3)figure Figure 4

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Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
NIF
gamma rays
high-energy density physics
gas Cerenkov detector