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TitleA two-pixel Compton imager
AuthorSaull, P R B; Sinclair, L E; Seywerd, H C J; Boyle, P J; MacLeod, A M L; Hanna, D S
SourceProceedings of SPIE, the international society of optical engineering vol. 76651E, 2010, 11 pages,
Alt SeriesEarth Sciences Sector, Contribution Series 20100032
MeetingSPIE Defense, Security and Sensing 2010; Orlando, FL; US; April 5-9, 2010
Mediaon-line; digital
File formatpdf
Subjectsgeophysics; remote sensing; radar imagery; gamma-ray surveys; EGSnrc; Geant4
ProgramCanadian Hazard Information Service, Canadian Hazard Information Service
AbstractWe are designing a Compton imager for use in security investigations and in radiological incident remediation. Previously, results from simulations of a system consisting of several layers of pixellated solid scintillator for both the scatter and absorber detectors were reported. We have now established a two-pixel test stand for validation of the simulations. The stand consists of a single scatter pixel fixed in space, and a single absorber pixel affixed to a two-dimensional translator. Automated translation of the absorber pixel to different positions allows for the acquisition of data at multiple Compton scattering angles, thereby building up a dataset from an effectively multi-channel Compton imager. Here we present performance characteristics for an imager composed of a single 1 cm3 pixel of NaI(Tl) for the scatter detector, and a single 1 cm3 pixel of LaBr3 for the absorber detector.