Simulation technique of Monte-Carlo for an HPGE detector based on a crystal of highly pure germanium

The technique (principles) of constructing a model of a gamma-ray detector based on a crystal of highly pure germanium is considered. In order to implement the research using a unified (Monte-Carlo) method, computer models of two detectors with different efficiencies were created to describe the process of registering gamma radiation in the crystal volume, taking into account the main processes in the detector crystal. The results of comparing the designed and simulated response efficiency of detectors constructed by the same technique but with different input parameters are obtained. A successful detector model construction scheme was established from the point of view of registration efficiency; the geometric parameters of the main detector components were determined. The development of this approach allows creating detector models based on highly pure germanium using a standard procedure. The research results might be useful for the development of gamma spectrometers or their calibration before use.