Evaluation of Compton scattering sequence reconstruction algorithms for a portable position sensitive radioactivity detector based on pixelated Cd(Zn)Te crystals

摘要

We present extensive simulation studies on the performance of algorithms forthe Compton sequence reconstruction used for the development of a portablespectroscopic instrument (COCAE), with the capability to localize and identifyradioactive sources, by exploiting the Compton scattering imaging. VariousCompton Sequence reconstruction algorithms have been compared using a largenumber of simulated events. These algorithms are based on Compton kinematics,as well as on statistical test criteria that exploit the redundant informationof events having two or more photon interactions in the active detector'svolume. The efficiency of the best performing technique is estimated for a widerange of incident gamma-ray photons emitted from point-like gamma sources.