GEOSCAN, résultats de la recherche


TitreA two-pixel Compton imager
AuteurSaull, 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,
Séries alt.Secteur des sciences de la Terre, Contribution externe 20100032
RéunionSPIE Defense, Security and Sensing 2010; Orlando, FL; US; avril 5-9, 2010
Documentpublication en série
Mediaen ligne; numérique
Sujetstélédétection; imagerie radar; levés par rayons gamma; géophysique
ProgrammeService d'information sur les dangers naturels au Canada, Service d'information sur les dangers naturels au Canada
Résumé(disponible en anglais seulement)
We 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.