Study on temperature coefficient of CdTe detector used for X-rays detection

TL;DR

This study investigates how temperature variations affect the performance of CdTe detectors used for X-ray detection, highlighting the importance of temperature control for accuracy and stability.

Contribution

The paper presents a precise temperature control system and experimental results on the temperature coefficient of CdTe detectors for X-ray detection.

Findings

Energy resolution deteriorates with increasing temperature.

Detection efficiency decreases as temperature rises.

Detectors perform best below 10°C with 8 keV X-rays.

Abstract

The temperature of the working environment is a key factor in determining the properties of semiconductor detectors, and it affects the absolute accuracy and stability of the standard detector. In order to determine the temperature coefficient of CdTe detector used for X-rays detection, a precise temperature control system was designed. In this experiment, detectors and radiographic source were set inside the thermostat with temperature of 0-40 Celsius degree, so that the temperature can be regulated for the test of the temperature coefficient of CdTe detector. Studies had shown that, with the increase of the temperature, the energy resolution and detection efficiency of the CdTe detector would deteriorate, and under 10 Celsius degree the detectors have better performance with the 8 keV X-rays.