典型文献
A stopping layer concept to improve the spatial resolution of gas-electron-multiplier neutron detector
文献摘要：
In recent years,gas electron multiplier(GEM)neutron detectors have been developing towards high spatial resolution and high dynamic counting range.We propose a novel concept of an Al stopping layer to enable the detector to achieve sub-millimeter(sub-mm)spatial resolution.The neutron conversion layer is coated with the Al stopping layer to limit the emission angle of ions into the drift region.The short track projection of ions is obtained on the signal readout board,and the detector would get good spatial resolution.The spatial resolutions of the GEM neutron detector with the Al stopping layer are simulated and optimized based on Geant4GarfieldInterface.The spatial resolution of the detector is 0.76 mm and the thermal neutron detection efficiency is about 0.01％when the Al stopping layer is 3.0 μm thick,the drift region is 2 mm thick,the strip pitch is 600 μm,and the digital readout is employed.Thus,the GEM neutron detector with a simple detector structure and a fast readout mode is developed to obtain a high spatial resolution and high dynamic counting range.It could be used for the direct measurement of a high-flux neutron beam,such as Bragg transmission imaging,very small-angle scattering neutron detection and neutron beam diagnostic.
文献关键词：
中图分类号：
作者姓名：
Jianjin Zhou;Jianrong Zhou;Xiaojuan Zhou;Lin Zhu;Jianqing Yang;Guian Yang;Yi Zhang;Baowei Ding;Bitao Hu;Zhijia Sun;Limin Duan;Yuanbo Chen
作者机构：
School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;Spallation Neutron Source Science Center,Dongguan 523803,China;State Key Laboratory of Particle Detection and Electronics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Institute of Modem Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Jianjin Zhou;Jianrong Zhou;Xiaojuan Zhou;Lin Zhu;Jianqing Yang;Guian Yang;Yi Zhang;Baowei Ding;Bitao Hu;Zhijia Sun;Limin Duan;Yuanbo Chen-.A stopping layer concept to improve the spatial resolution of gas-electron-multiplier neutron detector)[J].中国物理B（英文版）,2022(05):256-261
A类：
Geant4GarfieldInterface
B类：
stopping,layer,concept,improve,spatial,gas,electron,multiplier,neutron,recent,years,GEM,detectors,have,been,developing,towards,high,dynamic,counting,range,We,propose,novel,enable,achieve,sub,millimeter,conversion,coated,limit,emission,angle,into,drift,region,short,track,projection,obtained,signal,readout,board,would,get,good,resolutions,are,simulated,optimized,thermal,detection,efficiency,about,when,thick,strip,pitch,digital,employed,Thus,simple,structure,fast,mode,developed,It,could,used,direct,measurement,flux,beam,such,Bragg,transmission,imaging,very,small,scattering,diagnostic
AB值：
0.435468
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