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 CF4, 3He and 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:
- Issue Date:
- Research Org.:
- Boston Univ., MA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1341874
- Patent Number(s):
- 9557423
- Application Number:
- 12/893,221
- Assignee:
- Trustees of Boston University (Boston, MA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
- 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 CF4, 3He and 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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