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Title: Performance of coincidence-based PSD on LiF/ZnS Detectors for Multiplicity Counting

Abstract

Abstract: Mass accountancy measurement is a nuclear nonproliferation application which utilizes coincidence and multiplicity counters to verify special nuclear material declarations. With a well-designed and efficient detector system, several relevant parameters of the material can be verified simultaneously. 6LiF/ZnS scintillating sheets may be used for this purpose due to a combination of high efficiency and short die-away times in systems designed with this material, but involve choices of detector geometry and exact material composition (e.g., the addition of Ni-quenching in the material) that must be optimized for the application. Multiplicity counting for verification of declared nuclear fuel mass involves neutron detection in conditions where several neutrons arrive in a short time window, with confounding gamma rays. This paper considers coincidence-based Pulse-Shape Discrimination (PSD) techniques developed to work under conditions of high pileup, and the performance of these algorithms with different detection materials. Simulated and real data from modern LiF/ZnS scintillator systems are evaluated with these techniques and the relationship between the performance under pileup and material characteristics (e.g., neutron peak width and total light collection efficiency) are determined, to allow for an optimal choice of detector and material.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1334884
Report Number(s):
PNNL-SA-114839
DN2001000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2015), October 31-November 7, 2015, San Diego, California
Country of Publication:
United States
Language:
English

Citation Formats

Robinson, Sean M., Stave, Sean C., Lintereur, Azaree, Siciliano, Edward R., Cowles, Christian C., Kouzes, Richard T., and Behling, Richard S. Performance of coincidence-based PSD on LiF/ZnS Detectors for Multiplicity Counting. United States: N. p., 2016. Web. doi:10.1109/NSSMIC.2015.7581753.
Robinson, Sean M., Stave, Sean C., Lintereur, Azaree, Siciliano, Edward R., Cowles, Christian C., Kouzes, Richard T., & Behling, Richard S. Performance of coincidence-based PSD on LiF/ZnS Detectors for Multiplicity Counting. United States. doi:10.1109/NSSMIC.2015.7581753.
Robinson, Sean M., Stave, Sean C., Lintereur, Azaree, Siciliano, Edward R., Cowles, Christian C., Kouzes, Richard T., and Behling, Richard S. Thu . "Performance of coincidence-based PSD on LiF/ZnS Detectors for Multiplicity Counting". United States. doi:10.1109/NSSMIC.2015.7581753.
@article{osti_1334884,
title = {Performance of coincidence-based PSD on LiF/ZnS Detectors for Multiplicity Counting},
author = {Robinson, Sean M. and Stave, Sean C. and Lintereur, Azaree and Siciliano, Edward R. and Cowles, Christian C. and Kouzes, Richard T. and Behling, Richard S.},
abstractNote = {Abstract: Mass accountancy measurement is a nuclear nonproliferation application which utilizes coincidence and multiplicity counters to verify special nuclear material declarations. With a well-designed and efficient detector system, several relevant parameters of the material can be verified simultaneously. 6LiF/ZnS scintillating sheets may be used for this purpose due to a combination of high efficiency and short die-away times in systems designed with this material, but involve choices of detector geometry and exact material composition (e.g., the addition of Ni-quenching in the material) that must be optimized for the application. Multiplicity counting for verification of declared nuclear fuel mass involves neutron detection in conditions where several neutrons arrive in a short time window, with confounding gamma rays. This paper considers coincidence-based Pulse-Shape Discrimination (PSD) techniques developed to work under conditions of high pileup, and the performance of these algorithms with different detection materials. Simulated and real data from modern LiF/ZnS scintillator systems are evaluated with these techniques and the relationship between the performance under pileup and material characteristics (e.g., neutron peak width and total light collection efficiency) are determined, to allow for an optimal choice of detector and material.},
doi = {10.1109/NSSMIC.2015.7581753},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Oct 06 00:00:00 EDT 2016},
month = {Thu Oct 06 00:00:00 EDT 2016}
}

Conference:
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