Design of a high-sampling-rate electronic module for array-detector positron annihilation lifetime measurements

作     者：Jiale Cai Daowu Li Yingjie Wang Zhiming Zhang Peilin Wang Haohui Tang Baoyi Wang Xingzhong Cao Fuyan Liu Long Wei 

作者机构：Beijing Engineering Research Center of Radiographic Techniques and EquipmentInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Nuclear Science and TechnologyUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Radiation Detection Technology and Methods》 (辐射探测技术与方法（英文）)

年 卷 期：2019年第3卷第3期

页      面：127-135页

学科分类：0401[教育学-教育学] 04[教育学] 

基　　金：the National Natural Science Foundation of China(Grant Nos.11475206 11675191 and 11475197) 

主　　题：Digital constant fraction discriminator FPGA DRS4 Positron lifetime 

摘      要：Introduction In this study,a high-time-resolution electronic module with a high channel density and low power consumption was designed for the measurement of the multi-detector array positron annihilation *** electronic module consisted of 32 input channels,and each channel provided a high sampling rate up to 5.12 GSPS based on a Domino Ring Sampler 4(DRS4)*** to the high-speed flash analog-digital converter(FADC),DRS4 chip has a higher channel density with an affordable lower price and power *** The developed electronic module was also capable of real-time data analysis for directly extracting the time information of input signals at the data acquisition site,thereby significantly decreasing the data *** digital constant fraction discriminator(DCFD)algorithm was implemented in the field programmable gate array(FPGA)for performing the time *** The coincidence time resolution of the electronic module was measured,and the test results revealed a value of 26 ps.A prototypical 16-pixel detector module of the multi-detector system was evaluated using this electronic module,and the coincidence time resolution of the prototypical module was 411.84 *** The electronic module was confirmed to satisfy the severe requirements of the multi-array-detector positron annihilation lifetime measurement *** was also suitable for other high-time-resolution,high-channel-density,costeffective,and low-power-consumption applications.