Cosmic ray test of mini-drift thick gas electron multiplier chamber for transition radiation detector-猫眼课题宝

跃迁辐射探测器微漂移厚气体电子倍增室宇宙射线测试

DOI：

10.1016/j.nima.2015.02.037

发表时间：

2014-12

期刊：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

影响因子：

1.4

通讯作者：

中科院分区：

物理与天体物理3区

文献类型：

作者：

Yang S.;Das S.;Buck B.;Li C.;Ljubicic T.;Majka R.;Shao M.;Smirnov N.;Visser G.;Xu Z.;Zhou Y.

在宇宙线测试系统中，对有效读出面积为10×10cm2、电离间隙为11.3 mm的厚气体电子倍增器(THGEM)室和两个规则的气体电子倍增器(GEM)室进行了测试。厚厚的电离间隙使THGEM室成为一个微型漂移室。这种微小漂移THGEM室是作为电子离子对撞机(EIC)实验中用于识别电子的跃迁辐射探测器(TRD)的一部分而提出的。通过这次宇宙线测试，在3.65kVTHGEM电离室获得了大于94%的效率和~220μm的空间分辨率。由于其出色的空间分辨率和厚的电离能隙，THGEM室显示出出色的径迹重建能力。文中还介绍了THGEM腔的增益均匀性和稳定性。

A thick gas electron multiplier (THGEM) chamber with an effective readout area of 10× 10 cm 2 and a 11.3 mm ionization gap has been tested along with two regular gas electron multiplier (GEM) chambers in a cosmic ray test system. The thick ionization gap makes the THGEM chamber a mini-drift chamber. This kind mini-drift THGEM chamber is proposed as part of a transition radiation detector (TRD) for identifying electrons at an Electron Ion Collider (EIC) experiment. Through this cosmic ray test, an efficiency larger than 94% and a spatial resolution~ 220 μ m are achieved for the THGEM chamber at− 3.65 kV. Thanks to its outstanding spatial resolution and thick ionization gap, the THGEM chamber shows excellent track reconstruction capability. The gain uniformity and stability of the THGEM chamber are also presented.