基于波形采样的CEPC电磁量能器读出单元测试系统

李明慧; 牛萍娟; 董明义; 赵航; 胡鹏; 于丽媛; 胡涛; 王志刚

doi:10.11889/j.0253-3219.2018.hjs.41.010402

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基于波形采样的CEPC电磁量能器读出单元测试系统

核电子学与仪器 | 更新时间：2021-05-19

- 基于波形采样的CEPC电磁量能器读出单元测试系统
- A testing system of scintillator readout unit based on waveform sampling for CEPC ECAL
- 核技术 2018年41卷第1期文章编号：010402
- 作者机构：
  
  1.天津工业大学电气工程与自动化学院天津 300387
  2.中国科学院大学北京 100049
  3.中国科学院高能物理研究所北京 100049
  4.核探测与核电子学国家重点实验室北京 100049
- 作者简介：
  
  [ "李明慧, 女, 1992年出生, 2015年毕业于天津理工中环信息学院, 现为硕士研究生, 研究领域为光电检测技术", "LI Minghui, female, born in 1992, graduated from Zhonghuan Information College, Tianjin University of Technology in 2015, master student, focusing on electric detecting technique" ]
  王志刚, E-mail:wangzhg@ihep.ac.cn WANG Zhigang, E-mail:wangzhg@ihep.ac.cn
- 基金信息：
  
  国家重点研发计划(2016YFA0400400);中国科学院高能物理研究所科技创新项目(542014IHEPZZBS10653);国家自然科学基金(11675196)
- DOI：10.11889/j.0253-3219.2018.hjs.41.010402
  中图分类号： TL99
- 收稿日期：2017-10-12，
  
  修回日期：2017-11-14，
  
  纸质出版日期：2018-01-10
- 稿件说明：
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李明慧, 牛萍娟, 董明义, 等. 基于波形采样的CEPC电磁量能器读出单元测试系统[J]. 核技术, 2018,41(1):010402

Minghui LI, Pingjuan NIU, Mingyi DONG, et al. A testing system of scintillator readout unit based on waveform sampling for CEPC ECAL[J]. Nuclear techniques, 2018, 41(1): 010402
李明慧, 牛萍娟, 董明义, 等. 基于波形采样的CEPC电磁量能器读出单元测试系统[J]. 核技术, 2018,41(1):010402 DOI： 10.11889/j.0253-3219.2018.hjs.41.010402.

Minghui LI, Pingjuan NIU, Mingyi DONG, et al. A testing system of scintillator readout unit based on waveform sampling for CEPC ECAL[J]. Nuclear techniques, 2018, 41(1): 010402 DOI： 10.11889/j.0253-3219.2018.hjs.41.010402.

摘要

随着环形正负电子对撞机（Circular Electron Positron Collider，CEPC）方案的提出，由硅光电倍增管（Silicon Photomultiplier，SiPM）和塑料闪烁体组成的读出单元作为电磁量能器的预研方案之一，逐渐成为研究热点。在探测器预研阶段需要对读出单元性能进行充分研究，因此我们设计了一套自动化测试系统用于对读出单元进行测试、分析并改善其性能。利用DT5751波形采样插件、SiPM驱动电路板、步进电机、低压电源、继电器等完成硬件搭建，以LabVIEW为开发平台完成了软件的串行协议接口之间的通信，实现了读出单元的自动化测试，编写了相应的数据处理程序。在此基础上进行了SiPM刻度、闪烁体发光均匀性以及反射材料对光输出影响的研究。测试结果表明，ESR反射膜包裹的塑闪条具有最高的光输出，塑闪条耦合10 μm像素SiPM的光输出为耦合25 μm像素SiPM的三分之一。

Abstract

Background

In the proposal of the circular electron positron collider (CEPC) scheme

readout unit consisting of a silicon photomultiplier (SiPM) and a plastic scintillator has become a research hotspot as one of the main options of electromagnetic calorimeter (ECAL).

Purpose

This study aims to optimize the detector prototype by setup an automated testing system to test

analyze and improve the performance of each readout unit of CEPC ECAL.

Methods

Based on the DT5751 waveform sampling plug-in module

SiPM drive circuit

stepper motor

low-voltage power supply (LVPS)

relay

etc

the hardware of CEPC ECAL readout unit was built up whilst the software was developed with the LabVIEW. Repeated measurements were carried out to find the optimized parameters

and the SiPM calibration was performed.

Results

Experimental results show that proposed automated testing system satisfied basic requirements of CEPC ECAL readout unit. Setup of the testing platform of scintillator readout unit based on waveform sampling is option for CEPC ECAL and be used for SiPM calibration

scintillator uniformity of light output and reflective material study.

Conclusion

The experiment rwsult shows that the plastic scintillator strip with the ESR has the highest light yeild and the light yeild of 25 μm coupled with SiPM 3 times than 10 μm.

关键词

Keywords

references

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