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Recent Achievement of gas electron multiplier

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Semiconductor Photonics and Technology 2004年第1期10卷 62-67页

作者： WANGLin XIAYi-ben WANGLin-jun ZHANGMing-long YANGYing ZHANGWei-li RUANJian-feng SchoolofMater.Sci.andEng. ShanghaiUniversityShanghai201800CHN

gas electron multiplier (GEM) as a novel gas detector,due to it’s simple structure,high performance,well compatibility etc.,is widely used in high-energy physics,nuclear physics and other *** this review,the principl... 详细信息

关键词： gas electron multiplier gas detector Micro-strip gas chamber

Design and construction of a TPC prototype based on GEM detector readout

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Chinese Physics C 2008年第1期32卷 52-55页

作者：李玉兰曹良俊祁辉荣李金康克军李元景来永芳高原宁杨振伟 Dept.of Engineering Physics Tsinghua University Institute of Chemical Defense

A time projection chamber （TPC） readout by gas electron multipliers （GEM） detector is a very promising candidate for the central tracking system of ILC （International Linear Collider）. A prototype is designed and set up in our lab and introduced here. The tests during and after the assembly prove that the prototype TPC has been constructed successfully. It is ready for further study.

关键词： time projection chamber gas electron multiplier endcap readout

Study on the novel neutron-to-proton convertor for improving the detection efficiency of a triple GEM based fast neutron detector

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Chinese Physics C 2015年第2期39卷 39-43页

作者：王晓冬杨贺润任忠国张俊伟杨磊张春晖哈日巴拉安旅行胡碧涛 School of Nuclear Science and Technology Lanzhou University Institute of Modern Physics Chinese Academy of Sciences China Academy of Engineering Physics Inner Mongolia Center for Disease Control and Prevention LWD Logging Center China Petroleum Logging CO. LTD.

A high-efficiency fast neutron detector prototype based on a triple gas electron multiplier（GEM） detector, which, coupled with a novel multi-layered high-density polyethylene（HDPE） as a neutron-to-proton converter for improving the neutron detection efficiency, is introduced and tested with the Am-Be neutron source in the Institute of Modern Physics（IMP） at Lanzhou in the present work. First, the developed triple GEM detector is tested by measuring its effective gain and energy resolution with55 Fe X-ray source to ensure that it has a good *** effective gain and obtained energy resolution is 5.0×104and around 19.2%, respectively. Secondly, the novel multi-layered HDPE converter is coupled with the cathode of the triple GEM detector making it a high-efficiency fast neutron detector. Its effective neutron response is four times higher than that of the traditional single-layered conversion technique when the converter layer number is 38.

关键词： gas electron multiplier deposited energy Am-Be neutron source neutron detection efficiency fast neutron detector

Monte Carlo simulation of GEM-based for 14 MeV neutron detector

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Science China(Physics,Mechanics & Astronomy) 2013年第9期56卷 1740-1744页

作者： WANG XiaoDong ZHANG YuLian ZHANG ChunHui HU BiTao School of Nuclear Science and Technology Lanzhou University

A new concept of neutron detector based on gas electron multiplier(GEM) technology is presented in this paper,in which a novel multi-layer high density polyethylene(HDPE) as neutron-to-proton converter is proposed and studied with Geant4 toolkit for fast 14 MeV *** preliminary results show that the detection efficiency of the detector with 400 converter units is higher than 2.3% and reconstruction accuracy of the incident neutron position is higher than 2.6%.

关键词： gas electron multiplier 14 MeV neutron detection efficiency position reconstruction

Discriminating cosmic muons and X-rays based on rise time using a GEM detector

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Chinese Physics C 2016年第8期40卷 72-75页

作者：吴会寅赵圣鹰王晓冬章先鸣祁辉荣张伟吴柯岩胡碧涛张毅 School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China School of Nuclear Science and Technology University of South China Hengyang 421001 China State Key Laboratory of Particle Detection and electronics Beijing 100049 China

gas electron multiplier （GEM） detectors have been used in cosmic muon scattering tomography and neutron imaging over the last decade. In this work, a triple GEM device with an effective readout area of 10 cm × 10 cm is developed, and a method of discriminating between cosmic muons and X-rays based on rise time is tested. The energy resolution of the GEM detector is tested by 55Fe ray source to prove the GEM detector has a good performance. Analysis of the complete signal-cycles allows us to get the rise time and pulse heights. The experiment result indicates that cosmic muons and X-rays can be discriminated with an appropriate rise time threshold.

关键词： gas electron multiplier cosmic muon X-ray rising time discrimination