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

Title: Deuterium-tritium neutron yield measurements with the 4.5 m neutron-time-of-flight detectors at NIF

Abstract

The first several campaigns of laser fusion experiments at the National Ignition Facility (NIF) included a family of high-sensitivity scintillator/photodetector neutron-time-of-flight (nTOF) detectors for measuring deuterium-deuterium (DD) and DT neutron yields. The detectors provided consistent neutron yield (Y{sub n}) measurements from below 10{sup 9} (DD) to nearly 10{sup 15} (DT). The detectors initially demonstrated detector-to-detector Y{sub n} precisions better than 5%, but lacked in situ absolute calibrations. Recent experiments at NIF now have provided in situ DT yield calibration data that establish the absolute sensitivity of the 4.5 m differential tissue harmonic imaging (DTHI) detector with an accuracy of {+-}10% and precision of {+-}1%. The 4.5 m nTOF calibration measurements also have helped to establish improved detector impulse response functions and data analysis methods, which have contributed to improving the accuracy of the Y{sub n} measurements. These advances have also helped to extend the usefulness of nTOF measurements of ion temperature and downscattered neutron ratio (neutron yield 10-12 MeV divided by yield 13-15 MeV) with other nTOF detectors.

Authors:
; ; ; ;  [1];  [2]
  1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
  2. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States)
Publication Date:
OSTI Identifier:
22093808
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; 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; CALIBRATION; DATA ANALYSIS; DEUTERIUM; ION TEMPERATURE; LASER RADIATION; MEV RANGE 10-100; NEUTRON DETECTION; PULSES; RADIATION DETECTORS; RESPONSE FUNCTIONS; SENSITIVITY; THERMONUCLEAR REACTORS; TIME-OF-FLIGHT METHOD; TRITIUM; US NATIONAL IGNITION FACILITY

Citation Formats

Moran, M. J., Bond, E. J., Clancy, T. J., Eckart, M. J., Khater, H. Y., and Glebov, V. Yu. Deuterium-tritium neutron yield measurements with the 4.5 m neutron-time-of-flight detectors at NIF. United States: N. p., 2012. Web. doi:10.1063/1.4739077.
Moran, M. J., Bond, E. J., Clancy, T. J., Eckart, M. J., Khater, H. Y., & Glebov, V. Yu. Deuterium-tritium neutron yield measurements with the 4.5 m neutron-time-of-flight detectors at NIF. United States. doi:10.1063/1.4739077.
Moran, M. J., Bond, E. J., Clancy, T. J., Eckart, M. J., Khater, H. Y., and Glebov, V. Yu. Mon . "Deuterium-tritium neutron yield measurements with the 4.5 m neutron-time-of-flight detectors at NIF". United States. doi:10.1063/1.4739077.
@article{osti_22093808,
title = {Deuterium-tritium neutron yield measurements with the 4.5 m neutron-time-of-flight detectors at NIF},
author = {Moran, M. J. and Bond, E. J. and Clancy, T. J. and Eckart, M. J. and Khater, H. Y. and Glebov, V. Yu.},
abstractNote = {The first several campaigns of laser fusion experiments at the National Ignition Facility (NIF) included a family of high-sensitivity scintillator/photodetector neutron-time-of-flight (nTOF) detectors for measuring deuterium-deuterium (DD) and DT neutron yields. The detectors provided consistent neutron yield (Y{sub n}) measurements from below 10{sup 9} (DD) to nearly 10{sup 15} (DT). The detectors initially demonstrated detector-to-detector Y{sub n} precisions better than 5%, but lacked in situ absolute calibrations. Recent experiments at NIF now have provided in situ DT yield calibration data that establish the absolute sensitivity of the 4.5 m differential tissue harmonic imaging (DTHI) detector with an accuracy of {+-}10% and precision of {+-}1%. The 4.5 m nTOF calibration measurements also have helped to establish improved detector impulse response functions and data analysis methods, which have contributed to improving the accuracy of the Y{sub n} measurements. These advances have also helped to extend the usefulness of nTOF measurements of ion temperature and downscattered neutron ratio (neutron yield 10-12 MeV divided by yield 13-15 MeV) with other nTOF detectors.},
doi = {10.1063/1.4739077},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 83,
place = {United States},
year = {2012},
month = {10}
}