Effect of divider current on 7.62cm photomultiplier tube performance

Gang WANG; Yuekun HENG; Xiaohua LI; Nan LI; Zhimin WANG; Miao HE; Fengjiao LUO; Liangsheng HUANG; Mengzhao LI; Yuzhen YANG; Yan ZHANG; Kaile WEN

doi:10.11889/j.0253-3219.2018.hjs.41.080402

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Effect of divider current on 7.62cm photomultiplier tube performance

NUCLEAR ELECTRONICS AND INSTRUMENTATION | 更新时间：2021-05-19

- Effect of divider current on 7.62cm photomultiplier tube performance
- NUCLEAR TECHNIQUES Vol. 41, Issue 8, Article number: 080402(2018)
- 作者机构：
  
  1.南华大学衡阳 421001
  2.中国科学院高能物理研究所北京 100049
  3.核探测和核电子学国家重点实验室北京 100049
  4.中国科学院大学北京 100049
- 作者简介：
- 基金信息：
  
  Strategic Priority Research Program of Chinese Academy of Sciences
- DOI：10.11889/j.0253-3219.2018.hjs.41.080402
  CLC： TL813
- Received：29 August 2017，
  
  Revised：16 January 2018，
  
  Published：2018-08
- 稿件说明：
移动端阅览
Gang WANG, Yuekun HENG, Xiaohua LI, et al. Effect of divider current on 7.62cm photomultiplier tube performance[J]. Nuclear techniques, 2018, 41(8): 080402
DOI：

Gang WANG, Yuekun HENG, Xiaohua LI, et al. Effect of divider current on 7.62cm photomultiplier tube performance[J]. Nuclear techniques, 2018, 41(8): 080402 DOI： 10.11889/j.0253-3219.2018.hjs.41.080402.

摘要

7.62cm（3英寸）光电倍增管（Photomultiplier Tube，PMT）是江门中微子实验（Jiangmen Underground Neutrino Observatory，JUNO）巨型探测器的重要组成部分，以此构成的一套独立探测系统，承担着独立物理测量、与50.8cm（20英寸）PMT探测系统相互检验等重要任务。为提高探测系统的可靠性，使每个7.62cm PMT供电高压的单通道电流不超过10 μA，研究了不同高压电流对7.62cm PMT探测性能的影响。采用三种高压电流的分压器，对海南展创生产的型号为XP72B20（样管编号为70069）的7.62cm PMT的性能进行实验测试，包括增益、能量分辨率、峰谷比和阳极输出信号的非线性。结果表明：不同分压电流对7.62cm PMT性能的影响较小。这个结果为该7.62cm PMT在JUNO探测器中使用小分压电流的方案提供了重要的实验依据。

Abstract

Background

The 7.62cm (3-inch) photomultiplier tube (PMT) is an important component of the Jiangmen Underground Neutrino Observatory (JUNO) giant detector

which will work as an independent detection system for the physics measurements

and will calibrate as well as crosscheck the 50.8cm (20-inch) PMT detection system. It is required that the single-channel current supply of each 7.62cm PMT high voltage does not exceed 10 μA.

Purpose

This study aims to reduce the performance requirements of the high-voltage power supply system and improve the reliability of the system.

Methods

The effects of different high-voltage currents on the detection performance of the 7.62cm PMT are studied by experiments. Three kinds of high voltage current dividers were used to test the performance of an HZC XP72B20 7.62cm PMT sample (serial number 70069)

including gain

energy resolution

peak to valley ratio and non-linearity of the anode output signal.

Results

The change of the divider current has negligible impact on these probing performances.

Conclusions

This result provides an important experimental reference for the use of small divider current in the JUNO detector for the 7.62cm PMT.

关键词

Keywords

references

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