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Title: Direction sensitive neutron detector

Abstract

A neutron detector includes a pressure vessel, an electrically conductive field cage assembly within the pressure vessel and an imaging subsystem. A pressurized gas mixture of CF.sub.4, .sup.3He and .sup.4He at respective partial pressures is used. The field cage establishes a relatively large drift region of low field strength, in which ionization electrons generated by neutron-He interactions are directed toward a substantially smaller amplification region of substantially higher field strength in which the ionization electrons undergo avalanche multiplication resulting in scintillation of the CF.sub.4 along scintillation tracks. The imaging system generates two-dimensional images of the scintillation patterns and employs track-finding to identify tracks and deduce the rate and direction of incident neutrons. One or more photo-multiplier tubes record the time-profile of the scintillation tracks permitting the determination of the third coordinate.

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Trustees of Boston University, Boston, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1341874
Patent Number(s):
9,557,423
Application Number:
12/893,221
Assignee:
Trustees of Boston University (Boston, MA) CHO
DOE Contract Number:  
FG02-06ER41425; FG02-05ER41385; FG02-05ER41360
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Sep 29
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., and Inglis, Andrew. Direction sensitive neutron detector. United States: N. p., 2017. Web.
Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., & Inglis, Andrew. Direction sensitive neutron detector. United States.
Ahlen, Steven, Fisher, Peter, Dujmic, Denis, Wellenstein, Hermann F., and Inglis, Andrew. Tue . "Direction sensitive neutron detector". United States. https://www.osti.gov/servlets/purl/1341874.
@article{osti_1341874,
title = {Direction sensitive neutron detector},
author = {Ahlen, Steven and Fisher, Peter and Dujmic, Denis and Wellenstein, Hermann F. and Inglis, Andrew},
abstractNote = {A neutron detector includes a pressure vessel, an electrically conductive field cage assembly within the pressure vessel and an imaging subsystem. A pressurized gas mixture of CF.sub.4, .sup.3He and .sup.4He at respective partial pressures is used. The field cage establishes a relatively large drift region of low field strength, in which ionization electrons generated by neutron-He interactions are directed toward a substantially smaller amplification region of substantially higher field strength in which the ionization electrons undergo avalanche multiplication resulting in scintillation of the CF.sub.4 along scintillation tracks. The imaging system generates two-dimensional images of the scintillation patterns and employs track-finding to identify tracks and deduce the rate and direction of incident neutrons. One or more photo-multiplier tubes record the time-profile of the scintillation tracks permitting the determination of the third coordinate.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {1}
}

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