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Title: Pillar-structured neutron detector based multiplicity system

Abstract

This work demonstrates the potential of silicon pillars filled with boron-10 as a sensor technology for a compact and portable neutron multiplicity system. Solid-state, semiconductor based neutron detectors may enable completely new detector form factors, offer an alternate approach to helium-3 based systems, and reduce detector weight and volume requirements. Thirty-two pillar-structured neutron detectors were assembled into a system with an active area of over 20 cm2 and were used in this work to demonstrate the feasibility of this sensor technology as a potential replacement for helium-3 based gas detectors. Multiplicity measurements were successfully carried out using a californium-252 neutron source, in which the source mass, system efficiency, and die-away time were determined. As a result, this demonstration shows that these solid-state detectors could allow for a more compact and portable system that could be used for special nuclear material identification in the field.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1418939
Alternate Identifier(s):
OSTI ID: 1549339
Report Number(s):
LLNL-JRNL-734176
Journal ID: ISSN 0168-9002; TRN: US1801317
Grant/Contract Number:  
AC52-07NA27344; LLNL-JRNL-734176
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 877; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 98 NUCLEAR DISARMAMENT, SAFEGUARDS AND PHYSICAL PROTECTION; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Murphy, John W., Shao, Qinghui, Voss, Lars F., Kerr, Phil L., Fabris, Lorenzo, Conway, Adam M., and Nikolic, Rebecca J. Pillar-structured neutron detector based multiplicity system. United States: N. p., 2017. Web. https://doi.org/10.1016/j.nima.2017.09.060.
Murphy, John W., Shao, Qinghui, Voss, Lars F., Kerr, Phil L., Fabris, Lorenzo, Conway, Adam M., & Nikolic, Rebecca J. Pillar-structured neutron detector based multiplicity system. United States. https://doi.org/10.1016/j.nima.2017.09.060
Murphy, John W., Shao, Qinghui, Voss, Lars F., Kerr, Phil L., Fabris, Lorenzo, Conway, Adam M., and Nikolic, Rebecca J. Wed . "Pillar-structured neutron detector based multiplicity system". United States. https://doi.org/10.1016/j.nima.2017.09.060. https://www.osti.gov/servlets/purl/1418939.
@article{osti_1418939,
title = {Pillar-structured neutron detector based multiplicity system},
author = {Murphy, John W. and Shao, Qinghui and Voss, Lars F. and Kerr, Phil L. and Fabris, Lorenzo and Conway, Adam M. and Nikolic, Rebecca J.},
abstractNote = {This work demonstrates the potential of silicon pillars filled with boron-10 as a sensor technology for a compact and portable neutron multiplicity system. Solid-state, semiconductor based neutron detectors may enable completely new detector form factors, offer an alternate approach to helium-3 based systems, and reduce detector weight and volume requirements. Thirty-two pillar-structured neutron detectors were assembled into a system with an active area of over 20 cm2 and were used in this work to demonstrate the feasibility of this sensor technology as a potential replacement for helium-3 based gas detectors. Multiplicity measurements were successfully carried out using a californium-252 neutron source, in which the source mass, system efficiency, and die-away time were determined. As a result, this demonstration shows that these solid-state detectors could allow for a more compact and portable system that could be used for special nuclear material identification in the field.},
doi = {10.1016/j.nima.2017.09.060},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 877,
place = {United States},
year = {2017},
month = {10}
}

Works referenced in this record:

Plutonium measurements with a fast-neutron multiplicity counter for nuclear safeguards applications
journal, November 2014

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Statistical estimation of the performance of a fast-neutron multiplicity system for nuclear material accountancy
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Models for a three-parameter analysis of neutron signal correlation measurements for fissile material assay
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