Performance study of a cesium iodide photocathode-based UV photon detector in Ar/CH4 mixture

被引:2
|
作者
Baishali, G. [1 ]
Radhakrishna, V. [2 ]
Koushal, V. [2 ]
Rakhee, K. [2 ]
Rajanna, K. [1 ]
机构
[1] Indian Inst Sci, Dept Instrumentat & Appl Phys, Bangalore 560012, Karnataka, India
[2] ISRO Satellite Ctr, Space Astron Grp, Bangalore 560017, Karnataka, India
来源
PHOTONICS RESEARCH | 2014年 / 2卷 / 03期
关键词
GEM PHOTOMULTIPLIER; ELECTRON MULTIPLIERS; CSI PHOTOCATHODE; OPERATION;
D O I
10.1364/PRJ.2.000092
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The detection efficiency of a gaseous photomultiplier depends on the photocathode quantum efficiency and the extraction efficiency of photoelectrons into the gas. In this paper we have studied the performance of an UV photon detector with P10 gas in which the extraction efficiency can reach values near to those in vacuum operated devices. Simulations have been done to compare the percentage of photoelectrons backscattered in P10 gas as well as in the widely used neon-based gas mixture. The performance study has been carried out using a single stage thick gas electron multiplier (THGEM). The electron pulses and electron spectrum are recorded under various operating conditions. Secondary effects prevailing in UV photon detectors like photon feedback are discussed and its effect on the electron spectrum under different operating conditions is analyzed. (C) 2014 Chinese Laser Press
引用
收藏
页码:92 / 96
页数:5
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