Multichannel SiPM test readout system for gamma-ray measurements with monolithic inorganic CeBr_{3}

TL;DR

This study evaluates a multichannel SiPM-based readout system coupled with CeBr_{3} crystals for gamma-ray detection, analyzing energy resolution and efficiency across different sources, biases, and crystal sizes.

Contribution

It introduces a novel multichannel SiPM readout system for CeBr_{3} gamma-ray detectors and assesses its performance with various configurations.

Findings

Performance varies with crystal thickness and bias voltage.

Energy resolution depends on source and detector parameters.

Preliminary data indicates promising detection efficiency.

Abstract

Energy resolution and the detection efficiency for gamma quanta are fundamental properties in the construction of detectors for ionizing radiation. In this study, a SiPM-based photodetector coupled to a monolithic inorganic CeBr_{3} crystal is exposed to gamma rays in order to study the performance of the CeBr_{3} crystal. Measurements are made using three different radioactive sources - ^{137}Cs, ^{22}Na, and ^{60}Co. For each source, the measurements are conducted at several SiPM bias voltages. Furthermore, two CeBr_{3} crystals with different thicknesses are used in order to study how detector efficiency is affected by crystal dimensions. A preliminary analysis of the data is presented.