Electronic readout system for MWPC detector used in CSNS

REN Hailong; ZHAO Yubin; WEN Shuangchun; LU Ruiqi

doi:10.11889/j.0253-3219.2015.hjs.38.050402

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Electronic readout system for MWPC detector used in CSNS

更新时间：2021-03-03

- Electronic readout system for MWPC detector used in CSNS
- NUCLEAR TECHNIQUES Vol. 38, Issue 5, Article number: 050402(2015)
- 作者机构：
  
  1. 湖南大学物理与微电子科学学院,长沙,410082
  2. 东莞中子科学中心,东莞,523808
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2015.hjs.38.050402
  CLC：
- Published：08 May 2015
- 稿件说明：
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REN Hailong, ZHAO Yubin, WEN Shuangchun, et al. Electronic readout system for MWPC detector used in CSNS[J]. Nuclear techniques, 2015, 38(5): 050402
DOI：

REN Hailong, ZHAO Yubin, WEN Shuangchun, et al. Electronic readout system for MWPC detector used in CSNS[J]. Nuclear techniques, 2015, 38(5): 050402 DOI： 10.11889/j.0253-3219.2015.hjs.38.050402.

摘要

中国散裂中子源(China Spallation Neutron Source

CSNS)中的多功能反射谱仪采用二维多丝正比室探测器(Multi-Wire Proportional Chamber

MWPC)来获取入射中子的位置信息。本文介绍了一种结构简单的MWPC位置读出方法。该方法采用挪威IDEAS公司的64通道电荷灵敏专用集成电路(Application Specific Integrated Circuit

ASIC) VA64tap2.1，克服了传统方法硬件复杂、功耗大、成本高的缺点。另外，系统可通过测量阳极电荷量区分中子和γ射线，提高测量精度。在现有条件下对读出系统进行测试，测试结果表明：系统能完成读出任务，且所选ASIC芯片功耗低(每通道0.3 mW)、噪声小(<0.35 fC)、动态范围大(?200–+160 fC)、集成度高（单片64通道），可用于MWPC探测器的位置读出。

Abstract

Background: China Spallation Neutron Source (CSNS) is a scientific facility used for studying neutron characteristics and detecting the micro structure of materials. Purpose: This study aims to obtain the position and charge information of incident neutrons for the multipurpose reflectometer of CSNS. Methods: An electronic readout system is designed to detect and handle the signals from a two-dimensional Multi-Wire Proportional Chamber (MWPC). An Application Specific Integrated Circuit (ASIC) chip VA64tap2.1

made by IDEAS company

is applied to get the position and charge information in MWPC. The readout system is comprised of a VA64tap2.1-based readout board

a firmware for Field-Programmable Gate Array (FPGA) and an application program in PC. Results: The tests results show that the system can fulfill the readout requirements

and the ASIC chip is of low noise (less than 0.35fC when connected the MWPC detector)

low power dissipation (less than 0.3 mW per channel)

large dynamic range (?200?+160fC) and high integration (64 channels/board). Conclusion: This electronic readout system can be used in particle position detection. Abstract

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WANG Xiuku

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Related Institution

State Key Laboratory of Particle Detection and Electronics

Institute of High Energy Physics, Chinese Academy of Sciences

University of Chinese Academy of Sciences

Key Laboratory of Particle and Astrophysics, Chinese Academy of Sciences

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