SYMPOSIA PAPER Published: 01 January 2007

Spent Fuel Monitoring with Silicon Carbide Semiconductor Neutron/Gamma Detectors


Silicon carbide semiconductor radiation detectors have been demonstrated for neutron and gamma-ray monitoring of spent nuclear fuel. Neutrons and gamma rays were monitored simultaneously over a 2050-h period, resulting in a gamma dose of over 6000 Gy to the SiC detector. No changes in the neutron and gamma-ray sensitivity were observed as a result of the gamma-ray exposure. After the spentfuel measurements, the absolute neutron sensitivity was determined in a standard neutron field, and the degree of gamma-ray and neutron spectrum overlap were determined through exposures in intense gamma ray fields. No overlap was observed for gamma-ray dose rates up to 100 G/h.

Author Information

Natsume, T.
Mitsubishi Heavy Industries, LTD., Hyogo-ken, Japan
Doi, H.
Nuclear Development Corporation 622-12, Tokaimura Ibaraki, Japan
Ruddy, F., H.
Westinghouse Electric Company, Pittsburgh, PA
Seidel, J., G.
Westinghouse Electric Company, Pittsburgh, PA
Dulloo, A., R.
Westinghouse Electric Company, Pittsburgh, PA
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Developed by Committee: E10
Pages: 424–431
DOI: 10.1520/STP45471S
ISBN-EB: 978-0-8031-6242-6
ISBN-13: 978-0-8031-3412-6