Pulse shape simulation of p-type point contact germanium detector used in the rare physics events search

Abstract

In this work, we have developed the simulation tools to study the pulse shape of the p-type point contact germanium (pPCGe) detectors. Charge signal pulse has been simulated within the pPCGe detectors, based on the “Shockley–Ramo modeling” and has been compared to the experimentally measured charge signal pulse. We have also utilized the “finite difference method” technique for simulating the electric field within the pPCGe detector volume to study the drifting process of the charge carrier. The simulated charge signal pulse, based on our simulation tools, has been found compatible with the experimental results.