skip to main content

Title: Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experiments

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 C{sub 2}F{sub 6}, 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.
Authors:
; ; ; ; ; ;  [1] ;  [2] ; ;  [3] ;  [4] ;  [5] ;  [6]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. National Security Technologies, LLC, Los Alamos, New Mexico 87544 (United States)
  3. Atomic Weapons Establishment, Aldermaston, Berkshire RG7 4PR (United Kingdom)
  4. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
  5. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  6. Laboratory for Laser Energetics, Rochester, New York 14623 (United States)
Publication Date:
OSTI Identifier:
22303711
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CHERENKOV COUNTERS; ENERGY DENSITY; GAMMA DETECTION; GAMMA SPECTRA; LASERS; MEV RANGE; SEALS; SENSITIVITY; TARGET CHAMBERS; US NATIONAL IGNITION FACILITY