Performance simulation and structure design of Binode CdZnTe gamma-ray detector

A new electrode structure CdZnTe （Cadmium Zinc Telluride） detector named Binode CdZnTe has been pro- posed in this paper. Together with the softwares of MAXWELL, GEANT4, and ROOT, the charge collec- tion process and its gamma spectrum of the detector have been simulated and the detector structure has been optimized. In order to improve its performance further, Compton scattering effect correction has been used. The simulation results demonstrate that with refined design and Compton scattering effect correction, Binode CdZnTe detectors is capable of achieving 3.92% FWHM at 122 keV, and 1.27% FWHM at 662 keV. Com- pared with other single-polarity （electron-only） detector configurations, Binode CdZnTe detector offers a cost effective and simple structure alternative with comparable energy resolution.