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Title: Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum

Abstract

An aerogel Cherenkov detector is proposed to measure the X-ray energy spectrum from the Cygnus - intense flash X-ray source operated at the Nevada National Security Site. An array of aerogels set at a variety of thresholds between 1 ~ 3 MeV will be adequate to map out the bremsstrahlung X-ray production of the Cygnus, where the maximum energy of the spectrum is normally around 2.5 MeV. In addition to Cherenkov radiation from aerogels, one possible competing light-production mechanism is optical transition radiation (OTR), which may be significant in aerogels due to the large number of transitions from SiO2 clusters to vacuum voids. To examine whether OTR is a problem, four aerogel samples were tested using a mono-energetic electron beam (varied in the range of 1 ~ 3 MeV) at NSTec Los Alamos Operations. It was demonstrated that aerogels can be used as a Cherenkov medium, where the rate of the light production is about two orders magnitude higher when the electron beam energy is above threshold.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
Publication Date:
Research Org.:
Nevada National Security Site/National Security Technologies, LLC (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10)
OSTI Identifier:
1507437
Report Number(s):
DOE/NV/03624-2913
DOE Contract Number:  
DE-AC52-06NA25946
Resource Type:
Conference
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: Paper for the 21st Topical High-Temperature Plasma Diagnostics conference held June 5-9, 2016 in Madison, WI. Website: http://apps.union.wisc.edu/htpd2016/.
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum

Citation Formats

Kim, Y., Herrmann, H. W., McEvoy, A. M., Young, C. S., Hamilton, C., Schwellenbach, D. D., Malone, R. M., Kaufman, M. I., and Smith, A. S. Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum. United States: N. p., 2016. Web. doi:10.1063/1.4960541.
Kim, Y., Herrmann, H. W., McEvoy, A. M., Young, C. S., Hamilton, C., Schwellenbach, D. D., Malone, R. M., Kaufman, M. I., & Smith, A. S. Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum. United States. doi:10.1063/1.4960541.
Kim, Y., Herrmann, H. W., McEvoy, A. M., Young, C. S., Hamilton, C., Schwellenbach, D. D., Malone, R. M., Kaufman, M. I., and Smith, A. S. Mon . "Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum". United States. doi:10.1063/1.4960541. https://www.osti.gov/servlets/purl/1507437.
@article{osti_1507437,
title = {Aerogel Cherenkov Detector for Characterizing the Intense Flash X-ray Source, Cygnus, Spectrum},
author = {Kim, Y. and Herrmann, H. W. and McEvoy, A. M. and Young, C. S. and Hamilton, C. and Schwellenbach, D. D. and Malone, R. M. and Kaufman, M. I. and Smith, A. S.},
abstractNote = {An aerogel Cherenkov detector is proposed to measure the X-ray energy spectrum from the Cygnus - intense flash X-ray source operated at the Nevada National Security Site. An array of aerogels set at a variety of thresholds between 1 ~ 3 MeV will be adequate to map out the bremsstrahlung X-ray production of the Cygnus, where the maximum energy of the spectrum is normally around 2.5 MeV. In addition to Cherenkov radiation from aerogels, one possible competing light-production mechanism is optical transition radiation (OTR), which may be significant in aerogels due to the large number of transitions from SiO2 clusters to vacuum voids. To examine whether OTR is a problem, four aerogel samples were tested using a mono-energetic electron beam (varied in the range of 1 ~ 3 MeV) at NSTec Los Alamos Operations. It was demonstrated that aerogels can be used as a Cherenkov medium, where the rate of the light production is about two orders magnitude higher when the electron beam energy is above threshold.},
doi = {10.1063/1.4960541},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {6}
}

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