An analogue front-end ASIC prototype designed for PMT signal readout

作     者：刘建峰 赵雷 于莉 梁宇 秦家军 杨云帆 邬维浩 刘树彬 安琪 

作者机构：State Key Laboratory of Particle Detection and ElectronicsUniversity of Science and Technology of China Department of Modern PhysicsUniversity of Science and Technology of China 

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

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2016年第40卷第6期

页      码：49-58页

摘      要：The Water Cherenkov Detector Array （WCDA） is one of the core detectors in the Large High Altitude Air Shower Observatory （LHAASO）, and it consists of 3600 photomultiplier tubes （PMTs）. Both high resolution time and charge measurement are required over a large dynamic range from 1 photoelectron （P.E.） to 4000 P.E. The prototype of an analogue front-end Application Specific Integrated Circuit （ASIC） fabricated using Global Foundry 0.35 μm CMOS technology is designed to read out the PMT signal in the WCDA. This ASIC employs leading edge discrimination and an （RC）4 shaping structure. Combined with the following Time-to-Digital Converter （TDC） and Analog-to-Digital Converter （ADC）, both the arrival time and charge of the PMT signal can be measured. Initial test results indicate that time resolution is better than 350 ps and charge resolution is better than 10% at 1 P.E. and better than 1% with large input signals （300 P.E. to 4000 P.E.）. Besides, this ASIC has a good channel-to-channel isolation of more than 84 dB and the temperature dependency of charge measurement is less than 5% in the range 0 50℃.

主 题 词：analog ASIC charge measurement time measurement LHAASO WCDA 

学科分类：07[理学] 070401[070401] 0704[理学-天文学类] 

核心收录：

D　O　I：10.1088/1674-1137/40/6/066101

馆 藏 号：203108991...