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Proceedings Paper

3He neutron detector design for active detection of cargo containers
Author(s): Daniel B. McDevitt; J. W. Eberhard; Scott Zelakiewicz; Aaron Maschinot
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Paper Abstract

We report on the design of a neutron detector using industry standard 3He tubes to count delayed neutrons during the interrogation of cargo containers for the presence of Special Nuclear Material (SNM). Simulations of the detector design were run for delayed neutron spectra for a variety of cargos containing SNM using the Monte Carlo computer code COG. The simulations identified parameters crucial to optimize the detector design. These choices include moderating material type and thickness, tube spacing, tube pressure and number of tubes. An experimental prototype was also constructed based on the simulated design specifications. This paper discusses the parameters that lead up to the optimized detector design. It also compares the performance of the Monte Carlo simulated design and the experimental detector when exposed to a 239Pu-Be source.

Paper Details

Date Published: 25 April 2008
PDF: 7 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 694508 (25 April 2008); doi: 10.1117/12.774146
Show Author Affiliations
Daniel B. McDevitt, GE Global Research Lab. (United States)
J. W. Eberhard, GE Global Research Lab. (United States)
Scott Zelakiewicz, GE Global Research Lab. (United States)
Aaron Maschinot, GE Global Research Lab. (United States)

Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)

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