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Measurement and simulation of the hybrid structure gaseous detector gain

文献类型：期刊论文

作者Ou YQ(欧阳群); Wang HY(王海云); Wen ZW(温志文); Qi HR(祁辉荣); Zhang YL(张余炼); Ouyang, Q; Chen, YB; Zhang, J; Wen, ZW; Hu, BT
刊名ACTA PHYSICA SINICA物理学报
出版日期2017
卷号66期号:14页码:142901
关键词gas electron multiplier micromegas gain
ISSN号1000-3290
DOI10.7498/aps.66.142901
其他题名基于复合结构的气体电子倍增器增益模拟和实验研究
文献子类Article
英文摘要As one of the most popular micro pattern gaseous detectors, gas electron multiplier (GEM) has been extensively studied and applied in recent years. The studies of the detector gain measurement and simulation are important, especially on a low gain scale. Traditionally, the gain measurement is realized by measuring the current or the pulse height spectrum. The former needs complicated electronic chain calibration and the latter needs necessarily to calculate the primary electron number. In this paper, an alternative method to determine the effective gain of GEM is introduced. The GEM gain can be precisely achieved through a gaseous detector of hybrid structure which combines GEM with micro-mesh gaseous structure (MM). The hybrid structure is called GEM-MM for short. The GEM-MM detector consists of drift cathode, standard GEM foil, stainless steel micro mesh, and readout anode. In this detector, the space between the cathode and the GEM foil is called drift gap and the other space between the GEM foil and the mesh is named transfer gap. When the X-rays irradiate into the gas volume of GEM-MM, the primary ionization occurs in both regions. Photoelectrons in the drift gap transfer from the drift region to amplification sensitive areas of the GEM and the MM detector while those in the transfer region are only amplified by the MM detector. In the energy spectrum of 5 5 Fe, there is a clear energy profile including two sets of peaks. The gain of GEM can be easily obtained from the energy spectrum. Meanwhile, detailed simulations are carried out with Garfield++ software package. Simulation of the electron transport parameters has been optimized. and the gains of GEM detector are also calculated for three different gas mixtures. Experimental results of the gains ranging from 3 to 24 are obtained. The gains of GEM under different working voltages are studied precisely from the spectrum measurements. The Penning transfer rate could reach 0 : 3 2 +/- 0.01 when the simulated value matches the measurement within 1 sigma error.
WOS关键词SINGLE-ELECTRON RESPONSE ; MULTIPLIER GEM ; GAS GAIN ; MICROMEGAS ; UPGRADE
WOS研究方向Physics
语种中文
WOS记录号WOS:000408385100003
源URL[http://ir.ihep.ac.cn/handle/311005/285261]  
专题高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Ou YQ,Wang HY,Wen ZW,et al. Measurement and simulation of the hybrid structure gaseous detector gain[J]. ACTA PHYSICA SINICA物理学报,2017,66(14):142901.
APA 欧阳群.,王海云.,温志文.,祁辉荣.,张余炼.,...&Wang, HY.(2017).Measurement and simulation of the hybrid structure gaseous detector gain.ACTA PHYSICA SINICA物理学报,66(14),142901.
MLA 欧阳群,et al."Measurement and simulation of the hybrid structure gaseous detector gain".ACTA PHYSICA SINICA物理学报 66.14(2017):142901.

入库方式： OAI收割

来源：高能物理研究所

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