Development of gas electron multiplier foils with a laser etching technique
書誌事項
- 公開日
- 2006-05
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- https://www.elsevier.com/legal/tdmrep-license
- DOI
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- 10.1016/j.nima.2006.01.047
- 公開者
- Elsevier BV
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説明
Abstract Fine-pitch gas electron multiplier (GEM) foils have been produced for cosmic X-ray polarimeters using a carbon dioxide laser etching technique. The finest hole pitch of the foil which can be produced repeatedly is 50 μ m and the smallest hole diameter is 30 μ m . The electron amplification factor was measured as a function of applied voltage. The behavior of the factor is almost the same as the 140 μ m -pitch standard foil fabricated by CERN. Our GEMs had no rate-dependent gain instability, which is expected of the GEMs having holes of good cylindrical geometry. The amplification factor of the 50 μ m foil in a mixture of 70% argon and 30% carbon dioxide reaches about 5000 without any micro-discharge at a voltage of 570 V between foil electrodes.
収録刊行物
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- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 560 (2), 418-424, 2006-05
Elsevier BV