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Title: High-dynamic-range neutron time-of-flight detector used to infer the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yield and ion temperature on OMEGA

Abstract

Upgraded microchannel-plate–based photomultiplier tubes (MCP-PMT’s) with increased stability to signal-shape linearity have been implemented on the 13.4-m neutron time-of-flight (nTOF) detector at the Omega Laser Facility. This diagnostic uses oxygenated xylene doped with diphenyloxazole C{sub 15}H{sub 11}NO + p-bis-(o-methylstyryl)-benzene (PPO + bis-MSB) wavelength shifting dyes and is coupled through four viewing ports to fast-gating MCP-PMT’s, each with a different gain to allow one to measure the light output over a dynamic range of 1 × 10{sup 6}. With these enhancements, the 13.4-m nTOF can measure the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yields and average ion temperatures in a single line of sight. Once calibrated for absolute neutron sensitivity, the nTOF detectors can be used to measure the neutron yield from 1 × 10{sup 9} to 1 × 10{sup 14} and the ion temperature with an accuracy approaching 5% for both the D(t,n){sup 4}He and D(d,n){sup 3}He reactions.

Authors:
; ; ; ; ; ; ; ;  [1]
  1. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States)
Publication Date:
OSTI Identifier:
22596535
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ACCURACY; BENZENE; DIAGNOSTIC USES; DOPED MATERIALS; DYES; GAIN; HARBORS; HELIUM 3; HELIUM 4; ION TEMPERATURE; LASERS; MICROCHANNEL ELECTRON MULTIPLIERS; NEUTRONS; PHOTOMULTIPLIERS; SENSITIVITY; SHAPE; SIGNALS; TIME-OF-FLIGHT METHOD; XYLENES; YIELDS

Citation Formats

Forrest, C. J., E-mail: cforrest@lle.rochester.edu, Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Radha, P. B., Regan, S. P., Romanofsky, M. H., Sangster, T. C., Shoup, M. J., and Stoeckl, C. High-dynamic-range neutron time-of-flight detector used to infer the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yield and ion temperature on OMEGA. United States: N. p., 2016. Web. doi:10.1063/1.4960412.
Forrest, C. J., E-mail: cforrest@lle.rochester.edu, Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Radha, P. B., Regan, S. P., Romanofsky, M. H., Sangster, T. C., Shoup, M. J., & Stoeckl, C. High-dynamic-range neutron time-of-flight detector used to infer the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yield and ion temperature on OMEGA. United States. https://doi.org/10.1063/1.4960412
Forrest, C. J., E-mail: cforrest@lle.rochester.edu, Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Radha, P. B., Regan, S. P., Romanofsky, M. H., Sangster, T. C., Shoup, M. J., and Stoeckl, C. 2016. "High-dynamic-range neutron time-of-flight detector used to infer the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yield and ion temperature on OMEGA". United States. https://doi.org/10.1063/1.4960412.
@article{osti_22596535,
title = {High-dynamic-range neutron time-of-flight detector used to infer the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yield and ion temperature on OMEGA},
author = {Forrest, C. J., E-mail: cforrest@lle.rochester.edu and Glebov, V. Yu. and Goncharov, V. N. and Knauer, J. P. and Radha, P. B. and Regan, S. P. and Romanofsky, M. H. and Sangster, T. C. and Shoup, M. J. and Stoeckl, C.},
abstractNote = {Upgraded microchannel-plate–based photomultiplier tubes (MCP-PMT’s) with increased stability to signal-shape linearity have been implemented on the 13.4-m neutron time-of-flight (nTOF) detector at the Omega Laser Facility. This diagnostic uses oxygenated xylene doped with diphenyloxazole C{sub 15}H{sub 11}NO + p-bis-(o-methylstyryl)-benzene (PPO + bis-MSB) wavelength shifting dyes and is coupled through four viewing ports to fast-gating MCP-PMT’s, each with a different gain to allow one to measure the light output over a dynamic range of 1 × 10{sup 6}. With these enhancements, the 13.4-m nTOF can measure the D(t,n){sup 4}He and D(d,n){sup 3}He reaction yields and average ion temperatures in a single line of sight. Once calibrated for absolute neutron sensitivity, the nTOF detectors can be used to measure the neutron yield from 1 × 10{sup 9} to 1 × 10{sup 14} and the ion temperature with an accuracy approaching 5% for both the D(t,n){sup 4}He and D(d,n){sup 3}He reactions.},
doi = {10.1063/1.4960412},
url = {https://www.osti.gov/biblio/22596535}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 87,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}