典型文献
A large area 3He tube array detector with vacuum operation capacity for the SANS instrument at the CSNS
文献摘要:
The small-angle neutron scattering(SANS)instrument,one of the first three instruments of the China Spallation Neutron Source(CSNS),is designed to probe the microscopic and mesoscopic structures of materials in the scale range 1-100 nm.A large-area3He tube array detector has been constructed and operates at the CSNS SANS instrument since August 2018.It consists of 120 linear position-sensitive detector tubes,each 1 m in length and 8 mm in diameter,and filled with 3He gas at 20 bar to obtain a high detection efficiency.The3He tubes were divided into ten modules,providing an overall area of 1000 mm×1020 mm with a high count rate capability.Because each tube is installed independently,the detector can be quickly repaired in situ by replacing damaged tubes.To reduce air scattering,the SANS detector must operate in a vacuum environment(0.1 mbar).An all-metal sealing technique was adopted to avoid high-voltage breakdown by ensuring a high-voltage connection and an electronic sys-tem working in an atmospheric environment.A position resolution of 7.8±0.1 mm(full width at maximum)is measured along the length of the tubes,with a high detection efficiency of 81±2%at 2 A.Operating over the past four years,the detector appears to perform well and with a high stability,which supports the SANS instrument to finish approximately 200 user scientific programs.
文献关键词:
中图分类号:
作者姓名:
Xing-Fen Jiang;Jian-Rong Zhou;Hong Luo;Liang Xiao;Xiao-Juan Zhou;Hong Xu;Yuan-Guang Xia;Xiao-Guang Wu;Lin Zhu;Wen-Qing Yang;Gui-An Yang;Bei-Ju Guan;Hong-Yu Zhang;Yu-Bin Zhao;Zhi-Jia Sun;Yuan-Bo Chen
作者机构:
State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Spallation Neutron Source Science Center,Dongguan 523803,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处:
引用格式:
[1]Xing-Fen Jiang;Jian-Rong Zhou;Hong Luo;Liang Xiao;Xiao-Juan Zhou;Hong Xu;Yuan-Guang Xia;Xiao-Guang Wu;Lin Zhu;Wen-Qing Yang;Gui-An Yang;Bei-Ju Guan;Hong-Yu Zhang;Yu-Bin Zhao;Zhi-Jia Sun;Yuan-Bo Chen-.A large area 3He tube array detector with vacuum operation capacity for the SANS instrument at the CSNS)[J].核技术(英文版),2022(07):94-103
A类:
area3He,The3He
B类:
large,array,detector,vacuum,operation,capacity,SANS,CSNS,small,angle,neutron,scattering,one,first,three,instruments,China,Spallation,Neutron,Source,designed,probe,microscopic,mesoscopic,structures,materials,scale,range,has,been,constructed,operates,since,August,It,consists,linear,position,sensitive,tubes,each,length,diameter,filled,gas,obtain,high,detection,efficiency,were,divided,into,ten,modules,providing,overall,count,capability,Because,installed,independently,can,quickly,repaired,situ,by,replacing,damaged,To,reduce,must,environment,mbar,An,metal,sealing,technique,was,adopted,avoid,voltage,breakdown,ensuring,connection,electronic,sys,tem,working,atmospheric,resolution,full,width,maximum,measured,along,Operating,past,four,years,appears,perform,well,stability,which,supports,finish,approximately,user,scientific,programs
AB值:
0.564794
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