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Proceedings Paper

Development of neutron shields for gamma-ray detectors
Author(s): Jaesub Hong; Charles J. Hailey; William W. Craig
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Paper Abstract

The importance of shields for suppressing neutron-induced background in new classes of (gamma) -ray detectors such as CZT has been emphasized for a variety of reasons. These include high cross-sections for neutron interactions in detector materials and inefficient vetoing of neutrons in conventional active shields. We previously demonstrated through Monte-Carlo simulation how our new approach, supershields, is superior to the monolithic, biatomic neutron shields which have been developed in the past. Here we show the construction of several prototype models for supershields using B and H. We verify the performance of these supershields through lab experiments using radioactive sources and monoenergetic neutron beam at the Radiological Research Accelerator Facility, and compare the results with monolithic neutron shields. We also discuss the implications of this experiment for designs of supershields in general.

Paper Details

Date Published: 10 November 1998
PDF: 11 pages
Proc. SPIE 3445, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX, (10 November 1998); doi: 10.1117/12.330270
Show Author Affiliations
Jaesub Hong, Columbia Univ. (United States)
Charles J. Hailey, Columbia Univ. (United States)
William W. Craig, Columbia Univ. (United States)

Published in SPIE Proceedings Vol. 3445:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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