Development of a triple GEM UV-photon detector operated in pure CF4 for the PHENIX experiment

被引：67
作者：
Kozlov, A
Ravinovich, I
Shekhtman, L
Fraenkel, Z
Inuzuka, M
Tserruya, I [1 ]
机构：
[1] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel
[2] Univ Tokyo, Tokyo 1130033, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 523卷 / 03期
基金：
以色列科学基金会;
关键词：
GEM; CsI photocathode; UV-photon detector; CF4; HBD;
D O I：
10.1016/j.nima.2003.12.018
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Results obtained with a triple Gas Electron Multiplier (GEM) detector operated in pure CF4 with and without a reflective CsI photocathode are presented. The detector operates in a stable mode at gains up to 10(4). A deviation from exponential growth starts to develop when the total charge exceeds similar to4 x 10(6) e leading to gain saturation when the total charge is similar to2 x 10(7) e and making the structure relatively robust against discharges. No aging effects are observed in the GEM foils after a total accumulated charge of similar to10 mC/cm(2) at the anode. The ion back-flow current to the reflective photocathode is comparable to the electron current to the anode. However, no significant degradation of the CsI photocathode is observed for a total ion back-flow charge of similar to7 mC/cm(2). (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：345 / 354
页数：10
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