Test of a ^(3)He neutron detector readout electronics prototype for CSNS multipurpose physics neutron diffractometer  

作　　者：Xiao-guang Wu Yu-bin Zhao Hong Luo Jian-rong Zhou Liang Xiao Xiao-juan Zhou Bei-ju Guan Xing-cheng Tian Lin Zhu Xing-fen Jiang Zhi-jia Sun 

机构地区：[1]State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,Chinese Academy of Sciences(CAS),Beijing 100049,China [2]University of Chinese Academy of Sciences(UCAS),Beijing 100049,China [3]Spallation Neutron Source Science Center,Dongguan 523803,China

出　　处：《Radiation Detection Technology and Methods》2021年第2期200-206,共7页辐射探测技术与方法（英文）

基　　金：the State Key Laboratory of Particle Detection and Electronics and supported by a grant from the Scientific Research Foundation of Advanced talents(innovation team)of DGUT(No.KCYCXPT2016004).

摘　　要：Background Large areas of 3He neutron detector array and corresponding readout electronics are used in the MPI built at China Spallation Neutron Source(CSNS)to measure the position and flight time of scattered neutrons,and MPI has a high requirement for the position resolution of 3He neutron detector.A 3He neutron detector readout electronics prototype composed of two front-end boards and one digital readout board is designed to meet the above requirements.Purpose Testing the whole readout electronics system before its mass production to ensure it can run correctly and fulfill the functional and performance requirements.Methods The test of the readout electronics prototype is implemented in the laboratory,and a signal generator is used to generate electronic signals instead of actual neutron signals.The position resolution test of the readout electronics prototype with 3He tubes is carried out in the No.20 beamline measurement room of CSNS.Results and Conclusion The functional and performance tests in the laboratory state that the readout electronics prototype can fulfill the readout requirements.The typical value of charge resolution is 0.85 fC;the integral nonlinearity of charge is 0.094%in the input charge range from 100 to 800 fC.The position resolution test result of the prototype with 3He tubes is better than the design requirement of 10 mm and also quite good compared with that of some other commercial products.These tests provide a reliable basis for the mass production of the readout electronics prototype.

关 键 词：CSNS MPI 3He tube Readout electronics prototype Functional and performance tests 

分 类 号：O57[理学—粒子物理与原子核物理]