; Qi, Huirong
; Li, Jin
; Gao, Yuanning
; Li, Yuanjing
; Yang, Zhenwei] Tsinghua Univ, Dept Engn Phys, Minist Educ, Key Lab Particle & Radiat Imaging, Beijing 100084, Peoples R China
; [Li, Jin] CAS, Inst High Energy Phys, Beijing 100040, Peoples R China
; [Fujii, Keisuke
; Matsuda, Takeshi] High Energy Accelerator Res Org, IPNS, Tsukuba, Ibaraki, Japan
Time projection chambers (TPCs) have been successfully used as the central tracking devices in a number of high-energy physics experiments. However, the performance requirements on TPCs for future high-energy physics experiments greatly exceed the abilities of traditional TPCs read out by multi-wire proportional chambers (MWPCs). Micro-pattern gas detectors (MPGDs), such as gas electron multipliers (GEMS) or micromegas, have great potential to improve TPC performance when used as readout detectors. In order to evaluate its feasibility, a GEM-based TPC prototype with a drift length up to 50 cm was designed. Measurements of the spatial resolution of cosmic-ray tracks without and with a magnetic field (B = 1 T) are presented. A very good performance is achieved, matching the analytic formula for the spatial resolution of a MPGD-readout TPC. A dedicated study shows that the increase of GEM detector gain can improve the TPC's spatial resolution. (C) 2008 Elsevier B.V. All rights reserved.
Li, YL,Qi, HR,Li J,et al. Performance study of a GEM-TPC prototype using cosmic rays[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2008,596(3):305-310.
Li, YL.,Qi, HR.,李金.,Li, J.,Gao, YN.,...&Matsuda, T.(2008).Performance study of a GEM-TPC prototype using cosmic rays.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,596(3),305-310.
Li, YL,et al."Performance study of a GEM-TPC prototype using cosmic rays".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 596.3(2008):305-310.