skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3];  [4];  [5];  [6];  [1]
  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
Publication Date:
Research Org.:
National Security Technologies, LLC, Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1244530
Report Number(s):
DOE/NV/25946-2225
Journal ID: ISSN 0034-6748; RSINAK
DOE Contract Number:  
AC52-06NA25946
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 85; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; gas Cerenkov detector; gamma rays, high-energy density physics; NIF

Citation Formats

Herrmann, H. W., Kim, Y. H., Young, C. S., Fatherley, V. E., Lopez, F. E., Oertel, J. A., Malone, R. M., Rubery, M. S., Horsfield, C. J., Stoeffl, W., Zylstra, A. B., Shmayda, W. T., and Batha, S. H. Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experimentsa). United States: N. p., 2014. Web. doi:10.1063/1.4892553.
Herrmann, H. W., Kim, Y. H., Young, C. S., Fatherley, V. E., Lopez, F. E., Oertel, J. A., Malone, R. M., Rubery, M. S., Horsfield, C. J., Stoeffl, W., Zylstra, A. B., Shmayda, W. T., & Batha, S. H. Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experimentsa). United States. doi:10.1063/1.4892553.
Herrmann, H. W., Kim, Y. H., Young, C. S., Fatherley, V. E., Lopez, F. E., Oertel, J. A., Malone, R. M., Rubery, M. S., Horsfield, C. J., Stoeffl, W., Zylstra, A. B., Shmayda, W. T., and Batha, S. H. Sat . "Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experimentsa)". United States. doi:10.1063/1.4892553. https://www.osti.gov/servlets/purl/1244530.
@article{osti_1244530,
title = {Extended performance gas Cherenkov detector for gamma-ray detection in high-energy density experimentsa)},
author = {Herrmann, H. W. and Kim, Y. H. and Young, C. S. and Fatherley, V. E. and Lopez, F. E. and Oertel, J. A. and Malone, R. M. and Rubery, M. S. and Horsfield, C. J. and Stoeffl, W. and Zylstra, A. B. and Shmayda, W. T. and Batha, S. H.},
abstractNote = {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.},
doi = {10.1063/1.4892553},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 85,
place = {United States},
year = {2014},
month = {11}
}

Journal Article:

Figures / Tables:

Figure 2 Figure 2: Simulated signals for GCD-1 and GCD-3 at 14 MeV threshold. The undesired precursor (p1) is dominant for GCD-1 (blue) and overlaps with the Cherenkov signal (s1). The precursor (p3) is significantly reduced for GCD-3 (red) and the signal (s3) is delayed an additional 0.25 ns so as tomore » minimize overlap. The addition of a forward shield ring reduces the p3 precursor further (black) without affecting s3, allowing the precursor to essentially return to baseline prior to s3.« less

Save / Share:

Works referenced in this record:

Geant4—a simulation toolkit
journal, July 2003

  • Agostinelli, S.; Allison, J.; Amako, K.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3
  • DOI: 10.1016/S0168-9002(03)01368-8

Conceptual design of the gamma-to-electron magnetic spectrometer for the National Ignition Facility
journal, November 2014

  • Kim, Y.; Herrmann, H. W.; Jorgenson, H. J.
  • Review of Scientific Instruments, Vol. 85, Issue 11
  • DOI: 10.1063/1.4892900

Measurement of DT fusion and neutron-induced gamma-rays using gas Cherenkov Detector
journal, August 2010


Initial performance results of the OMEGA laser system
journal, January 1997


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

  • Hoffman, N. M.; Herrmann, H. W.; Kim, Y. H.
  • Physics of Plasmas, Vol. 20, Issue 4
  • DOI: 10.1063/1.4799799

The National Ignition Facility: Laser Performance and First Experiments
journal, April 2005

  • Moses, Edward I.; Wuest, Craig R.
  • Fusion Science and Technology, Vol. 47, Issue 3
  • DOI: 10.13182/FST47-314

Observation of d–t fusion gamma rays (invited)
journal, March 2003

  • Caldwell, S. E.; Berggren, R. R.; Davis, B. A.
  • Review of Scientific Instruments, Vol. 74, Issue 3
  • DOI: 10.1063/1.1534932

ICF gamma-ray reaction history diagnostics
journal, August 2010


    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.