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

Title: Alternatives to Helium-3 for Neutron Multiplicity Counters

Abstract

Multiplicity counters are an example of a neutron detection system affected by the shortage of 3He. Efforts are underway to identify potential 3He neutron detector replacements for use in multiplicity counters. Boron-10 and 6Li based systems are two of the options being explored as near-term 3He alternatives for neutron multiplicity counters. Simulations of BF3, 10B-lined proportional counters and 6Li/ZnS(Ag) sheets in various configurations have been performed with the Monte Carlo particle transport code MCNPX and compared to simulations of existing 3He counters. The system performances are being compared using figure of merits that are the square or cube of the total system efficiency divided by the die-away time. Design considerations include developing a system with enough neutron detection material to achieve the highest possible efficiency, while simultaneously minimizing system size. Adequate moderation is required to thermalize the incident neutrons for increased counting efficiency but as the system size increases so will the die-away time (average lifetime of neutrons in the counter). The optimal moderator configuration is one for which the increase in neutron detection efficiency is not defeated by an increase in die-away time. Thus, the entire system performance must be evaluated with every configuration change. The simulation results willmore » be validated against a bench-top demonstrator unit design based on the system identified through simulations as having the highest performance potential. Presented here are the simulation results with various configurations of BF3 filled proportional counters, 10B lined proportional counters and 6Li/ZnS(Ag) sheets, and preliminary bench-top measurements.« less

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1113610
Report Number(s):
PNNL-SA-92075
NN2001000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Journal Name:
IEEE Transactions on Nuclear Science, 60(2):510-514
Additional Journal Information:
Conference: Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2012), October 27-November 3, 2012, Anaheim, CA, 547-553
Publisher:
IEEE, Piscataway, NJ, United States(US).
Country of Publication:
United States
Language:
English
Subject:
Alternatives to Helium-3 for Neutron Multiplicity Counters

Citation Formats

Lintereur, Azaree T., Ely, James H., Kouzes, Richard T., Siciliano, Edward R., Swinhoe, Martyn T., and Woodring, Mitchell L. Alternatives to Helium-3 for Neutron Multiplicity Counters. United States: N. p., 2012. Web. doi:10.1109/NSSMIC.2012.6551168.
Lintereur, Azaree T., Ely, James H., Kouzes, Richard T., Siciliano, Edward R., Swinhoe, Martyn T., & Woodring, Mitchell L. Alternatives to Helium-3 for Neutron Multiplicity Counters. United States. doi:10.1109/NSSMIC.2012.6551168.
Lintereur, Azaree T., Ely, James H., Kouzes, Richard T., Siciliano, Edward R., Swinhoe, Martyn T., and Woodring, Mitchell L. Sun . "Alternatives to Helium-3 for Neutron Multiplicity Counters". United States. doi:10.1109/NSSMIC.2012.6551168.
@article{osti_1113610,
title = {Alternatives to Helium-3 for Neutron Multiplicity Counters},
author = {Lintereur, Azaree T. and Ely, James H. and Kouzes, Richard T. and Siciliano, Edward R. and Swinhoe, Martyn T. and Woodring, Mitchell L.},
abstractNote = {Multiplicity counters are an example of a neutron detection system affected by the shortage of 3He. Efforts are underway to identify potential 3He neutron detector replacements for use in multiplicity counters. Boron-10 and 6Li based systems are two of the options being explored as near-term 3He alternatives for neutron multiplicity counters. Simulations of BF3, 10B-lined proportional counters and 6Li/ZnS(Ag) sheets in various configurations have been performed with the Monte Carlo particle transport code MCNPX and compared to simulations of existing 3He counters. The system performances are being compared using figure of merits that are the square or cube of the total system efficiency divided by the die-away time. Design considerations include developing a system with enough neutron detection material to achieve the highest possible efficiency, while simultaneously minimizing system size. Adequate moderation is required to thermalize the incident neutrons for increased counting efficiency but as the system size increases so will the die-away time (average lifetime of neutrons in the counter). The optimal moderator configuration is one for which the increase in neutron detection efficiency is not defeated by an increase in die-away time. Thus, the entire system performance must be evaluated with every configuration change. The simulation results will be validated against a bench-top demonstrator unit design based on the system identified through simulations as having the highest performance potential. Presented here are the simulation results with various configurations of BF3 filled proportional counters, 10B lined proportional counters and 6Li/ZnS(Ag) sheets, and preliminary bench-top measurements.},
doi = {10.1109/NSSMIC.2012.6551168},
journal = {IEEE Transactions on Nuclear Science, 60(2):510-514},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {11}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: