现代应用物理2025，Vol.16Issue(6)：31-41,11.DOI:10.12061/j.issn.2095-6223.202408001
一种用于SiPM阵列探测器全部通道读出的前端电子学系统
A Front-End Electronics System for Full-Channel Readout of SiPM Array Detectors
摘要
Abstract
To achieve single-particle measurement of low intensity pulsed X/γ rays produced by bremsstrahlung of high-energy electron beams in space,a front-end electronics system for full-channel readout of SiPM array detectors is developed based on near-saturation amplification discrimination method and traditional time over threshold(TOT)techniques.By using low-bandwidth operational amplifier and differential output discriminator,this system acquires comprehensive physical information,including energy,timing and intensity.Subsequently,valid pulsed X/γ-ray events are identified within the FPGA of the back-end digital circuitry through pulse width and timestamp coincidence.This paper introduces the design scheme,performance test and physical verification of front-end electronics system,obtaining the pulse width-energy spectrum and time-intensity spectrum within the low-energy range(50-200 keV).The measurement results show that the pulse width is positively correlated with energy in low-energy region,and picking out the effective signal by pulse width coincidence.The near-saturation amplification improves the timing accuracy,which can reach 800 ps after correction.关键词
硅光电倍增管/探测器阵列/低带宽近饱和放大/时间过阈Key words
silicon photo-multiplier(SiPM)/detector array/low-bandwidth near-saturation amplification/time over threshold(TOT)分类
能源科技引用本文复制引用
陈彦丽,欧阳晓平,谭新建,魏福利,翁秀峰,夏惊涛,刘霄..一种用于SiPM阵列探测器全部通道读出的前端电子学系统[J].现代应用物理,2025,16(6):31-41,11.基金项目
国家自然科学基金资助项目(D051200001) （D051200001）
