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Development of an Optimized Converter Layer for a Silicon-Carbide-Based Neutron Sensor for the Detection of Fissionable Materials

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Published
Publication date26/10/2019
Host publication2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
PublisherIEEE
Number of pages7
ISBN (electronic)9781728141640
<mark>Original language</mark>English
Event2019 IEEE Nuclear Science Symposium and Medical Imaging Conference - Manchester Central Convention Centre, Manchester, United Kingdom
Duration: 26/10/20192/11/2019
Conference number: 26

Conference

Conference2019 IEEE Nuclear Science Symposium and Medical Imaging Conference
Abbreviated titleIEEE NSS/MIC 2019
Country/TerritoryUnited Kingdom
CityManchester
Period26/10/192/11/19

Conference

Conference2019 IEEE Nuclear Science Symposium and Medical Imaging Conference
Abbreviated titleIEEE NSS/MIC 2019
Country/TerritoryUnited Kingdom
CityManchester
Period26/10/192/11/19

Abstract

We describe the early stage development of a miniature silicon carbide neutron sensor, for applications including robotic monitoring at the Fukushima Daiichi nuclear power plant, specifically, within the primary containment vessel for
fuel debris detection and retrieval. Monte Carlo simulations using MCNP 6.2 and Geant4 10.05.01 are used to investigate and optimize converter layers for thermal neutron detection. Performance of a 10B4C:SiC detector system is investigated in detail and a neutron detection efficiency ∼4% is predicted, with
a gamma discrimination ratio of the order of 105.