STCF RICH原型探测器的测试电子学系统构建与联调测试

侯宝临; 赵雷; 陈朕; 张志永; 刘倩; 丰建鑫; 汪安琪; 邵明; 刘建北; 李嘉铭; 封常青; 刘树彬; 安琪

doi:10.7538/yzk.2020.youxian.0045

STCF RICH原型探测器的测试电子学系统构建与联调测试

核探测与核电子学国家重点实验室,中国科学技术大学,安徽合肥230026
西南科技大学信息工程学院,四川绵阳621010
中国科学院大学物理科学学院,北京100049

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出版历程
- 刊出日期: 2020-06-19

Development of Verification Electronics System for STCF RICH Prototype Detector and Its Testing with Detector

State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China
School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 环形成像切伦科夫（RICH）探测器作为超级陶粲装置（STCF）带电强子(π/K/p)鉴别的技术选项之一，采用厚型气体电子倍增器+微网格气体（THGEM+Micromegas）混合探测器结构以实现对切伦科夫光的探测。针对RICH原型探测器的信号读出，构建了一套1 024通道测试电子学系统，并与探测器进行了联合测试。该测试电子学系统使用高密接插件与RICH原型探测器进行连接，探测器输出信号通过测试电子学系统上的AGET和ADC芯片进行放大、成形和波形数字化，输出的数据经FPGA处理后通过千兆以太网传输至后端PC并进行数据分析。测试结果表明，在120 fC输入动态范围下，系统的等效噪声电荷（ENC）小于0.3 fC，且具有良好的输入-输出线性。该系统成功应用于RICH原型探测器切伦科夫成像束流实验中，并取得了良好的切伦科夫光成像结果。
- 超级陶粲装置 ,
- AGET ,
- RICH原型探测器 ,
- 多通道测试电子学系统
Abstract: The ring imaging Cherenkov (RICH) prototype detector, which is based on a thick gaseous electron multiplier+micro mesh gas (THGEM+Micromegas) hybrid detector structure to detect Cherenkov light, is one of the technical options for particle identification of charged hadron (π/K/p) at the super tau-charm facility (STCF). The setup of 1 024-channel verification electronics system for the RICH prototype detector and the test result with the detector were presented. The verification electronics system imports signal from the RICH prototype detector through high-density connectors, and uses the AGET and ADC ASICs for signal amplification, shaping, and waveform digitization. The digital data are then processed by the FPGA and finally transferred to a remote PC for data analysis. The results show that the system equivalent noise charge (ENC) is less than 0.3 fC and the good input-output linearity is achieved with an input dynamic range of 120 fC. The verification electronics system is successfully applied in the beam test of the RICH prototype detector, and good Cherenkov light images are obtained.
- super tau-charm facility ,
- AGET ,
- RICH prototype detector ,
- multi-channel verification electronics system

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