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Title: Accelerating fissile material detection with a neutron source

Abstract

A neutron detector system for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly to count neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. The system includes a Poisson neutron generator for in-beam interrogation of a possible fissile neutron source and a DC power supply that exhibits electrical ripple on the order of less than one part per million. Certain voltage multiplier circuits, such as Cockroft-Walton voltage multipliers, are used to enhance the effective of series resistor-inductor circuits components to reduce the ripple associated with traditional AC rectified, high voltage DC power supplies.

Inventors:
;
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1600204
Patent Number(s):
10451749
Application Number:
15/419,916
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
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DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/30/2017
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Rowland, Mark S., and Snyderman, Neal J. Accelerating fissile material detection with a neutron source. United States: N. p., 2019. Web.
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Rowland, Mark S., & Snyderman, Neal J. Accelerating fissile material detection with a neutron source. United States.
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Rowland, Mark S., and Snyderman, Neal J. Tue . "Accelerating fissile material detection with a neutron source". United States. https://www.osti.gov/servlets/purl/1600204.
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@article{osti_1600204,
title = {Accelerating fissile material detection with a neutron source},
author = {Rowland, Mark S. and Snyderman, Neal J.},
abstractNote = {A neutron detector system for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly to count neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. The system includes a Poisson neutron generator for in-beam interrogation of a possible fissile neutron source and a DC power supply that exhibits electrical ripple on the order of less than one part per million. Certain voltage multiplier circuits, such as Cockroft-Walton voltage multipliers, are used to enhance the effective of series resistor-inductor circuits components to reduce the ripple associated with traditional AC rectified, high voltage DC power supplies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 22 00:00:00 EDT 2019},
month = {Tue Oct 22 00:00:00 EDT 2019}
}
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Works referenced in this record:

Count logic circuit
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Cosmic-ray-induced ship-effect neutron measurements and implications for cargo scanning at borders
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Advanced electronics for faster time-correlation analysis of pulse sequences
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patent-application, March 2007

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  • https://doi.org/10.1016/S0168-9002(00)00304-1
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