Development of SiPM batch aging and performance measurement system

[Background]As a new type of optoelectronic detector developed in recent years, SiPM (Silicon Photomultiplier) has the advantages of low cost, miniaturization and low working voltage. It has been widely used in particle detection, medical imaging, high-energy physics and other fields, especially in the field of large-area particle imaging. But large-area imaging requires a large number of SiPMs, so it is very important to achieve a large number of SiPMs batch screening, aging and performance measurements. [Purpose] This study aims to design a batch performance measurement system for SiPMs that enables the simultaneous aging and performance assessment of 512 SiPMs (the number can be further expanded). [Methods] An online control program was developed in Python to measure the aging performance of 512 SiPMs under conditions of 30 °C, 40% relative humidity and an operating voltage of 29V. Subsequently, using the relative derivative method, the variation in the breakdown voltage of the SiPMs was studied under diff