The prototype SIGMA detector is the first p-type segmented inverted-coaxial germanium detector to be manufactured for γ-ray tracking and imaging purposes [1,2]. The γ-ray tracking and imaging capability of SIGMA requires a high precision of measuring the interaction positions of γ-ray radiation with the detector which is strongly dependent upon the achieved position resolution. The γ-ray interaction position is determined by extracting the charge pulses from both a small p-type point contact on the rare face of the detector and the outer n-type electrode which is electrically segmented into 18 segments. In order to determine the position resolution of SIGMA, pulse shape analysis (PSA) methods using chi-squared minimisation technique will be applied which require a signal database of all possible positions of γ-ray interactions with the detector volume. For this reason, the detector response has been simulated using Agata Detector Library (ADL)  to generate theoretical pulse shapes for the SIGMA detector. The simulated signals were validated against their equivalent experimental signals at known positions in order to build such signal database which is currently being developed.
|Your name||Ahmed Alharbi|
|Institute||University of Liverpool|