Nine element Si-based pillar structured thermal neutron detector

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

doi:10.1117/12.862391

27 August 2010 Nine element Si-based pillar structured thermal neutron detector

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

Author Affiliations +

Proceedings Volume 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII; 78050O (2010) https://doi.org/10.1117/12.862391
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

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.

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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, and M. N. Ericson "Nine element Si-based pillar structured thermal neutron detector", Proc. SPIE 7805, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XII, 78050O (27 August 2010); https://doi.org/10.1117/12.862391

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