Analog front-end prototype electronics for the LHAASO WCDA  

作　　者：马聪 赵雷 郭宇翔 刘建峰 刘树彬 安琪 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China [2]Department of Modern Physics, University of Science and Technology of China

出　　处：《Chinese Physics C》2016年第1期79-85,共7页中国物理C（英文版）

基　　金：Supported by Knowledge Innovation Program of the Chinese Academy of Sciences(KJCX2-YW-N27);National Natural Science Foundation of China(11175174);CAS Center for Excellence in Particle Physics(CCEPP)

摘　　要：In the readout electronics of the Water Cerenkov Detector Array （WCDA） in the Large High Altitude Air Shower Observatory （LHAASO） experiment, both high-resolution charge and time measurement are required over a dynamic range from 1 photoelectron （P.E.） to 4000 P.E. The Analog Front-end （AFE） circuit is one of the crucial parts in the readout electronics. We designed and optimized a prototype of the AFE through parameter calculation and circuit simulation~ and conducted initial electronics tests on this prototype to evaluate its performance. Test results indicate that the charge resolution is better than 1%@4000 P.E. and remains better than 10%@1 P.E., and the time resolution is better than 0.5 ns RMS, which is better than the application requirements.In the readout electronics of the Water Cerenkov Detector Array （WCDA） in the Large High Altitude Air Shower Observatory （LHAASO） experiment, both high-resolution charge and time measurement are required over a dynamic range from 1 photoelectron （P.E.） to 4000 P.E. The Analog Front-end （AFE） circuit is one of the crucial parts in the readout electronics. We designed and optimized a prototype of the AFE through parameter calculation and circuit simulation~ and conducted initial electronics tests on this prototype to evaluate its performance. Test results indicate that the charge resolution is better than 1%@4000 P.E. and remains better than 10%@1 P.E., and the time resolution is better than 0.5 ns RMS, which is better than the application requirements.

关 键 词：LHAASO WCDA AFE charge measurement time measurement 

分 类 号：P171[天文地球—天文学]