Three Dimension Distribution of Electric Field in GEM Gas Detectors

  • The 3D distribution of electric field in GEM (Gas Electron Multiplier) electrode is calculated based on the finite element method. The transmissivity of electric field lines in four types of GEM are obtained, these are 33.12%,34 85%,40.70%, and 16.70% for double-conical, cylindrical, single-conical and inverse-conical electrodes respectively. The three dimensional calculation of electric field in GEM agrees with the experimental data better than the two dimensional calculation.
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  • [1] .Fabio Sauli.Nucl.Instr.and Meth.,2003,A505:195-1982.LI Cheng,XU Zi-Zong.Nuclear Electronics Detection Technology,2000,20(5):351(in Chinese)(李澄,许咨宗.核电子学与探测技术,2000,20(5):351)3.Bouianov O,Bouianov M,Orava R et al.Nucl.Instr.and Meth.,2000,A450:277 -2874.Bouianov O,Bouianov M,Orava R et al.Nucl.Instr.and Meth.,2001,A458:698 -7095.3D Simulat ion of Charge Transf er in a Gas Electron Multiplier (GEM)and Comparison to Experiment.CERN-OPEN-99-3736.Tomas Motos Lopez.Electrostatic Field Calculation of the Gas ElectronMult iplier (GEM) Using Ansofts 3D Field Simulator.CERN/IT/99-57.QIANG Yi.Research on the Propert ies of Avalanche in Gas ElectronMultiplier,Thesis of University of Science and Technology of China,2002(in chinese)(强翼,GEM 探测器体放大性能研究,中国科学技术大学毕业论文,2002)
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ZHOU Yi, LI Cheng, AN Shao-Hui and XU Zi-Zong. Three Dimension Distribution of Electric Field in GEM Gas Detectors[J]. Chinese Physics C, 2004, 28(3): 299-303.
ZHOU Yi, LI Cheng, AN Shao-Hui and XU Zi-Zong. Three Dimension Distribution of Electric Field in GEM Gas Detectors[J]. Chinese Physics C, 2004, 28(3): 299-303. shu
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Received: 2003-06-25
Revised: 1900-01-01
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Three Dimension Distribution of Electric Field in GEM Gas Detectors

    Corresponding author: LI Cheng,
  • Department of Modern Physics,University of Science and Technology of China,Hefei 230027,China

Abstract: The 3D distribution of electric field in GEM (Gas Electron Multiplier) electrode is calculated based on the finite element method. The transmissivity of electric field lines in four types of GEM are obtained, these are 33.12%,34 85%,40.70%, and 16.70% for double-conical, cylindrical, single-conical and inverse-conical electrodes respectively. The three dimensional calculation of electric field in GEM agrees with the experimental data better than the two dimensional calculation.

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