GEANT4 simulation and spectrum restoration of a pixelated X-ray detector

TL;DR

This paper presents a detailed GEANT4 simulation and a novel spectrum restoration method for a pixelated CdTe X-ray detector, enabling accurate recovery of incident spectra without hardware corrections.

Contribution

The study introduces a comprehensive simulation combined with a custom electronic response model that restores X-ray spectra without hardware charge sharing corrections.

Findings

Successful spectrum restoration from measured data

Simulation accurately models detector electronic response

Method reduces need for hardware corrections

Abstract

We perform a detailed simulation of a pixelated CdTe detector using the GEANT4 toolkit completed with a custom code emulating the detector's electronic response. We demonstrate that a measured tungsten X-ray spectrum can be majorly restored back to the original incident spectrum using the developed model, without requiring the dedicated hardware charge sharing correction.