Title :
Development and performance evaluation of Thick-GEM
Author :
Yamaguchi, Yorito ; Hamagaki, Hideki ; Gunji, Taku ; Oda, Susumu ; Aramaki, Yoki ; Sano, Satoshi ; Tamagawa, Toru
Author_Institution :
Univ. of Tokyo, Tokyo
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
A Gas Electron Multiplier with a thick insulator such as a 100 mum or 150 mum thick insulator (Thick-GEM) has been developed by dry etching successfully in Japan. The electric field inside a hole of the Thick-GEM was calculated and the basic properties of the Thick-GEM were measured. A much stronger electric field can be realized inside the hole of the Thick-GEM than that of a GEM with a 50 mum thick insulator (Standard-GEM). The Thick-GEM can attain much higher gain than the Standard-GEM and has a good gain stability within 1.0% for 9 hours. In this paper, the characteristics of the Thick-GEM are described compared with the Standard-GEM.
Keywords :
electron multiplier detectors; position sensitive particle detectors; GEM; dry etching technique; electric field; gas electron multiplier; thick insulator; Dielectrics and electrical insulation; Dry etching; Electric variables measurement; Electron multipliers; Gas insulation; Stability; Thickness measurement; Gas Electron Multiplier; Index Terms; Thick-GEM; dry etching;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4437144
