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TitleSilicon photomultiplier-based Compton Telescope for safety and security
AuthorSinclair, L; Saull, P; Hanna, D; Seywerd, H; MacLeod, A; Boyle, P
SourceProceedings of the IEEE Nuclear Science Symposium and Medical Imaging Conference; IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers) 61, 5, 2013 p. 1-8,
Alt SeriesEarth Sciences Sector, Contribution Series 20130305
PublisherIEEE NSS-MIC Conference Record Archive
MeetingIEEE Nuclear Science Symposium and Medical Imaging Conference; Seoul; KP; October 27 - November 2, 2013
Mediapaper; on-line; digital
File formatpdf
Subjectsgeophysics; Health and Safety; health hazards; gamma-ray surveys
Illustrationsphotographs; tables; plots; spectra
ProgramCanadian Hazard Information Service, Canadian Hazard Information Service
AbstractA Compton gamma imager has been designed for use in consequence management operations and in security investigations. The imager uses solid inorganic scintillator, known for robust performance in field survey conditions, and was constrained in overall size by the requirement that it be operable from a variety of platforms, and person transportable among them. In order to introduce minimal dead material in the path of the incoming and scattered gamma rays, custom silicon photomultipliers (SiPMs), with a thin glass substrate, were used to collect the scintillation light from the scatter layers. To move them out of the path of the gamma rays, preamplification electronics
for the silicon photomultiplers were located a distance from the imager. This imager, the Silicon photomultiplier Compton Telescope for Safety and Security (SCoTSS) is able to provide a one-degree image resolution in a 90? field of view for a 10 mCi point source 40 m distant, within about one minute, for photopeak energies ranging from 344 keV to 1274 keV. Here, we present a comprehensive performance study of the SCoTSS imager.
Summary(Plain Language Summary, not published)
Prompted by the needs of NRCan's Nuclear Emergency Response group under the Canadian Hazards Information Service, we built a gamma imager which can show the locations of radioactivity overlaid on a photograph of the surroundings. The imager is innovative and of scientific interest in the fields of radiation detection, medical imaging, and light collection. This conference proceedings contribution is the first publication of the quantitative performance measures of the imager.