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Proceedings Paper

Nine element Si-based pillar structured thermal neutron detector
Author(s): R. J. Nikolic; A. M. Conway; R. Radev; Q. Shao; L. Voss; T. F. Wang; J. R. Brewer; C. L. Cheung; L. Fabris; C. L. Britton; M. N. Ericson
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Paper Abstract

Solid state thermal neutron detectors are desirable for replacing the current 3He based technology, which has some limitations arising from stability, sensitivity to microphonics and the recent shortage of 3He. Our approach to designing such solid state detectors is based on the combined use of high aspect ratio silicon PIN pillars surrounded by 10B, the neutron converter material. To date, our highest measured detection efficiency is 20%. An efficiency of greater than 50% is expected while maintaining high gamma rejection, low power operation and fast timing for multiplicity counting for our engineered device architecture. The design of our device structure, progress towards a nine channel system and detector scaling challenges are presented.

Paper Details

Date Published: 27 August 2010
PDF: 9 pages
Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78050O (27 August 2010); doi: 10.1117/12.862391
Show Author Affiliations
R. J. Nikolic, Lawrence Livermore National Lab. (United States)
A. M. Conway, Lawrence Livermore National Lab. (United States)
R. Radev, Lawrence Livermore National Lab. (United States)
Q. Shao, Lawrence Livermore National Lab. (United States)
L. Voss, Lawrence Livermore National Lab. (United States)
T. F. Wang, Lawrence Livermore National Lab. (United States)
J. R. Brewer, Univ. of Nebraska-Lincoln (United States)
C. L. Cheung, Univ. of Nebraska-Lincoln (United States)
L. Fabris, Oak Ridge National Lab. (United States)
C. L. Britton, Oak Ridge National Lab. (United States)
M. N. Ericson, Oak Ridge National Lab. (United States)


Published in SPIE Proceedings Vol. 7805:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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