Design and development of multi-channel front end electronics based on dual-polarity charge-to-digital converter for SiPM detector applications  

作　　者：Yu‑Ying Li Chang‑Yu Li Kun Hu 

机构地区：[1]Institute of Frontier and Interdisciplinary Science,Shandong University,Qingdao 266237,China

出　　处：《Nuclear Science and Techniques》2023年第2期1-12,共12页核技术（英文）

基　　金：supported by the Natural Science Foundation of Shandong Province (No. ZR2022QA039);the Program of Qilu Young Scholars of Shandong University

摘　　要：With the development of silicon photomultiplier(SiPM)technology,front-end electronics for SiPM signal processing have been highly sought after in various fields.A compact 64-channel front-end electronics(FEE)system achieved by fieldprogrammable gate array-based charge-to-digital converter(FPGA-QDC)technology was built and developed.The FEE consists of an analog board and FPGA board.The analog board incorporates commercial amplifiers,resistors,and capacitors.The FPGA board is composed of a low-cost FPGA.The electronics performance of the FEE was evaluated in terms of noise,linearity,and uniformity.A positron emission tomography(PET)detector with three different readout configurations was designed to validate the readout capability of the FEE for SiPM-based detectors.The PET detector was made of a 15×15 lutetium–yttrium oxyorthosilicate(LYSO)crystal array directly coupled with a SiPM array detector.The experimental results show that FEE can process dual-polarity charge signals from the SiPM detectors.In addition,it shows a good energy resolution for 511-keV gamma photons under the dual-end readout for the LYSO crystal array irradiated by a Na-22 source.Overall,the FEE based on FPGA-QDC shows promise for application in SiPM-based radiation detectors.

关 键 词：Readout electronics Charge measurement Radiation detector Silicon photomultiplier Field-programmable gate array 

分 类 号：TL81[核科学技术—核技术及应用]