Study of the THGEM detector with a reflective CsI photocathode

中国物理C, 2011, 35(4): 363-367. doi: 10.1088/1674-1137/35/4/008

^1, , ^2, , ^3, , ^4, , ^5, , ^6, , ^7, , ^8, , ^9, , ^10, , ^11,

1.Graduate University of Chinese Academy of Sciences, Beijing 100049, China ;Guangxi University, Naning 530004, China

2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China

3.Graduate University of Chinese Academy of Sciences, Beijing 100049, China ;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

4.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

5.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

6.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

7.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

8.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

9.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

10.Beijing Nuclear Instrument Factory, Beijing 100176, China

11.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

基金项目: National Natural Science Foundation of China(10775181;10775151)

Study of the THGEM detector with a reflective CsI photocathode

LIU Hong-Bang ^1, , ZHENG Yang-Heng ^2, , XIE Yi-Gang ^3, , L(U) Jun-Guang ^4, , ZHOU Li ^5, , YU So-Xiang ^6, , ZHANG Ai-Wu ^7, , AN Zheng-Hua ^8, , XIE Yu-Guang ^9, , ZHANG Dong ^10, , ZHENG Zhi-Peng ^11,

1.Graduate University of Chinese Academy of Sciences, Beijing 100049, China ;Guangxi University, Naning 530004, China

2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China

3.Graduate University of Chinese Academy of Sciences, Beijing 100049, China ;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

4.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

5.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

6.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

7.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

8.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

9.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

10.Beijing Nuclear Instrument Factory, Beijing 100176, China

11.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Keywords： THGEM

The THGEM detector without and with a CsI has been tested successfully. The optimal parame- ters of THGEM have been determined from eight samples. The UV photoelectric effect of the CsI photocathode is observed. The changing tendency related to the extraction efficiency (ε<,extr>) versus the extraction electric field is measured, and several electric fields influencing the anode current are adjusted to adapt to the THGEM detector with a reflective CsI photocathode.

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