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TitleSimulations of a scintillator compton gamma imager for safety and security
AuthorSinclair, L E; Hanna, D S; Macleod, A M L; Saull, P R B
SourceIEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers) vol. 56, no. 3, 2009 p. 1262-1268, (Open Access)
Alt SeriesEarth Sciences Sector, Contribution Series 20090119
Mediapaper; on-line; digital
File formatpdf
Subjectsenvironmental geology; nuclear applications; nuclear waste disposal
ProgramCanadian Hazard Information Service
AbstractWe are designing an all-scintillator Compton gamma imager for use in security investigations and remediation actions involving radioactive threat material. To satisfy requirements for a rugged and portable instrument, we have chosen solid scintillator for the active volumes of both the scatter and absorber detectors. Using the BEAMnrc/EGSnrc Monte Carlo simulation package, we have constructed models using four different materials for the scatter detector: LaBr3, NaI, CaF2, and PVT. We have compared the detector performances using angular resolution, efficiency, and image resolution. We find that while PVT provides worse performance than that of the detectors based entirely on inorganic scintillators, all of the materials investigated for the scatter detector have the potential to provide performance adequate for our purposes.