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Title: The National Ignition Facility neutron time-of-flight system and its initial performance (invited)

Abstract

The National Ignition Facility (NIF) successfully completed its first inertial confinement fusion (ICF) campaign in 2009. A neutron time-of-flight (nTOF) system was part of the nuclear diagnostics used in this campaign. The nTOF technique has been used for decades on ICF facilities to infer the ion temperature of hot deuterium (D{sub 2}) and deuterium-tritium (DT) plasmas based on the temporal Doppler broadening of the primary neutron peak. Once calibrated for absolute neutron sensitivity, the nTOF detectors can be used to measure the yield with high accuracy. The NIF nTOF system is designed to measure neutron yield and ion temperature over 11 orders of magnitude (from 10{sup 8} to 10{sup 19}), neutron bang time in DT implosions between 10{sup 12} and 10{sup 16}, and to infer areal density for DT yields above 10{sup 12}. During the 2009 campaign, the three most sensitive neutron time-of-flight detectors were installed and used to measure the primary neutron yield and ion temperature from 25 high-convergence implosions using D{sub 2} fuel. The OMEGA yield calibration of these detectors was successfully transferred to the NIF.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ; ; ; ;  [2] more »; « less
  1. Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623 (United States)
  2. Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States)
Publication Date:
OSTI Identifier:
22055769
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 81; Journal Issue: 10; Other Information: (c) 2010 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; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCURACY; CALIBRATION; CONVERGENCE; DENSITY; DEUTERIUM; DOPPLER BROADENING; ICF DEVICES; IMPLOSIONS; INERTIAL CONFINEMENT; ION TEMPERATURE; NEUTRON DETECTION; NEUTRONS; PERFORMANCE; PLASMA; SENSITIVITY; SENSORS; TIME-OF-FLIGHT METHOD; TRITIUM; US NATIONAL IGNITION FACILITY; YIELDS

Citation Formats

Glebov, V Yu, Sangster, T C, Stoeckl, C, Knauer, J P, Theobald, W, Marshall, K L, Shoup, III, M J, Buczek, T, Cruz, M, Duffy, T, Romanofsky, M, Fox, M, Pruyne, A, Moran, M J, Lerche, R A, McNaney, J, Kilkenny, J D, Eckart, M J, Schneider, D, Munro, D, and others, and. The National Ignition Facility neutron time-of-flight system and its initial performance (invited). United States: N. p., 2010. Web. doi:10.1063/1.3492351.
Glebov, V Yu, Sangster, T C, Stoeckl, C, Knauer, J P, Theobald, W, Marshall, K L, Shoup, III, M J, Buczek, T, Cruz, M, Duffy, T, Romanofsky, M, Fox, M, Pruyne, A, Moran, M J, Lerche, R A, McNaney, J, Kilkenny, J D, Eckart, M J, Schneider, D, Munro, D, & others, and. The National Ignition Facility neutron time-of-flight system and its initial performance (invited). United States. doi:10.1063/1.3492351.
Glebov, V Yu, Sangster, T C, Stoeckl, C, Knauer, J P, Theobald, W, Marshall, K L, Shoup, III, M J, Buczek, T, Cruz, M, Duffy, T, Romanofsky, M, Fox, M, Pruyne, A, Moran, M J, Lerche, R A, McNaney, J, Kilkenny, J D, Eckart, M J, Schneider, D, Munro, D, and others, and. Fri . "The National Ignition Facility neutron time-of-flight system and its initial performance (invited)". United States. doi:10.1063/1.3492351.
@article{osti_22055769,
title = {The National Ignition Facility neutron time-of-flight system and its initial performance (invited)},
author = {Glebov, V Yu and Sangster, T C and Stoeckl, C and Knauer, J P and Theobald, W and Marshall, K L and Shoup, III, M J and Buczek, T and Cruz, M and Duffy, T and Romanofsky, M and Fox, M and Pruyne, A and Moran, M J and Lerche, R A and McNaney, J and Kilkenny, J D and Eckart, M J and Schneider, D and Munro, D and others, and},
abstractNote = {The National Ignition Facility (NIF) successfully completed its first inertial confinement fusion (ICF) campaign in 2009. A neutron time-of-flight (nTOF) system was part of the nuclear diagnostics used in this campaign. The nTOF technique has been used for decades on ICF facilities to infer the ion temperature of hot deuterium (D{sub 2}) and deuterium-tritium (DT) plasmas based on the temporal Doppler broadening of the primary neutron peak. Once calibrated for absolute neutron sensitivity, the nTOF detectors can be used to measure the yield with high accuracy. The NIF nTOF system is designed to measure neutron yield and ion temperature over 11 orders of magnitude (from 10{sup 8} to 10{sup 19}), neutron bang time in DT implosions between 10{sup 12} and 10{sup 16}, and to infer areal density for DT yields above 10{sup 12}. During the 2009 campaign, the three most sensitive neutron time-of-flight detectors were installed and used to measure the primary neutron yield and ion temperature from 25 high-convergence implosions using D{sub 2} fuel. The OMEGA yield calibration of these detectors was successfully transferred to the NIF.},
doi = {10.1063/1.3492351},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 10,
volume = 81,
place = {United States},
year = {2010},
month = {10}
}