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清华大学学报(自然科学版)  2015, Vol. 55 Issue (6): 691-694    
  工程物理 本期目录 | 过刊浏览 | 高级检索 |
针对位置灵敏涂硼稻草管中子探测器的读出电子学设计
于昊1, 宫辉1, 王永强2, 王学武1, 李荐民1, 李元景1, 康克军1
1. 清华大学 工程物理系, 粒子技术与辐射成像教育部重点实验室, 北京 100084;
2. 同方威视技术股份有限公司, 北京 100084
Readout electronics for position sensitive boron coated straw detector
YU Hao1, GONG Hui1, WANG Yongqiang2, WANG Xuewu1, LI Jianmin1, LI Yuanjing1, KANG Kejun1
1. Key Laboratory of Particle and Radiation Imaging of the Ministry of Education, Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
2. NUCTECH Company Limited, Beijing 100084, China
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摘要 涂硼稻草管中子探测器将替代3He管探测器应用在清华大学微型脉冲强子源(CPHS)小角散射谱仪上。该文设计了针对该新型位置灵敏中子探测器的读出电子学系统, 通过分析探测器和前端电路的噪声, 得出了位置分辨率的估算方法, 并结合根据探测器输出信号特征优化了电路参数。对1.0 m长的涂硼稻草管及其读出电子学系统分别进行了电荷注入测试和中子束流测试, 位置分辨率的测试结果分别为2.7 mm和4.5 mm。实验结果表明:涂硼稻草管及其读出电子学系统的性能可以满足CPHS小角散射谱仪对中子位置测量的需求。
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于昊
宫辉
王永强
王学武
李荐民
李元景
康克军
关键词 涂硼稻草管读出电子学位置灵敏中子探测器    
Abstract:Boron coated straw neutron detectors are being developed for use in the small-angle neutron scattering (SANS) instrument of the compact pulsed hadron source (CPHS) in Tsinghua University. This paper describes the readout electronics system for the position sensitive detector. The position resolution is estimated based on a noise analysis of the detector and the front end electronics. Then, the circuit parameters are optimized to improve the output signal characteristics. The position resolution of the detector and the readout electronics were evaluated using a charge injection test and a neutron beam test, with a position resolution of 2.7 mm in the charge injection test and 4.5 mm in the neutron beam test. The results that the detector and readout electronics meet the requirements for the neutron position measurement in the CPHS SANS instrument.
Key wordsboron coated straw detector    readout electronics    position sensitivity    neutron detector
收稿日期: 2014-11-25      出版日期: 2015-09-08
ZTFLH:  TL822  
通讯作者: 宫辉, 助理研究员。E-mail: gonghui@mail.tsinghua.edu.cn     E-mail: gonghui@mail.tsinghua.edu.cn
引用本文:   
于昊, 宫辉, 王永强, 王学武, 李荐民, 李元景, 康克军. 针对位置灵敏涂硼稻草管中子探测器的读出电子学设计[J]. 清华大学学报(自然科学版), 2015, 55(6): 691-694.
YU Hao, GONG Hui, WANG Yongqiang, WANG Xuewu, LI Jianmin, LI Yuanjing, KANG Kejun. Readout electronics for position sensitive boron coated straw detector. Journal of Tsinghua University(Science and Technology), 2015, 55(6): 691-694.
链接本文:  
http://jst.tsinghuajournals.com/CN/  或          http://jst.tsinghuajournals.com/CN/Y2015/V55/I6/691
  图1 读出电路结构框图
  图2 前端电路的噪声等效电路
  表1 不同滤波时间常数下和信号与差信号的等效噪声电荷
  图3 5次测量叠加后的位置谱
  图4 测量得到的位置与实际位置的线性关系
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