12–17 Oct 2015
Trieste - Italy
Europe/Rome timezone

Development of a new generation GEM using a fine ceramic

13 Oct 2015, 16:10
Oceania (Trieste - Italy)

Oceania

Trieste - Italy

Congress Centre Stazione Marittima Molo Bersaglieri, 3 34123 Trieste Italy
Board: 24
Poster New Developments in MPDGs Poster session & coffee break

Speaker

Mr Kazuki Komiya (Tokyo Metropolitan Industrial Technology Reserach Institute)

Description

In general, the GEM electrode is based on an organic material such as Polyimide or Liquid Crystal Polymer. However, they cause making short circuit between electrodes by discharge, emitting a lot of gas in high temperature envelopment, and more expensive by a lot of manufacturing process. Therefore the electrode has not higher reliability and the GEM in a sealed chamber is still not appearing in the market. In order to increase the reliability and archive the sealed type GEM, we have developed a low cost electrode for GEM employing a fine ceramic and improving manufacturing method in successful. The developed electrode has thickness of 100 micron, the hole diameter of 100 micron, the pitch of 200 micron, and the effective area of 225 square millimeter. The pressure of emitting out gas is less than 1.0 × 10^-3 Pa at 100 degrees Celsius. The gain is approximately 500 in Ar/CO2 gas mixture ratio of 70%:30% at applied voltage of 570 V. We would like to report the development of the new generation GEM and result of evaluation of discharge and gain characteristics.

Primary author

Mr Kazuki Komiya (Tokyo Metropolitan Industrial Technology Reserach Institute)

Co-authors

Prof. Hideki Hamagaki (Center for Nuclear Study, University of TOKYO) Dr Kohei Fujiwara (Tokyo Metropolitan Industrial Technology Research Institute) Dr Masaki Wakabayashi (RIKEN) Ms Megu Kubota (RIKEN/Tokyo University of Science) Mr Takeshi Kobayashi (Tokyo Metropolitan Industrial Technology Research Institute) Prof. Toru Tamagawa (RIKEN) Ms Yoko Takeushi (RIKEN and Tokyo University of Science)

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