Development of gas electron multiplier foils with a laser etching technique

被引：42

作者：

Tamagawa, T

Tsunoda, N

Hayato, A

Hamagaki, H

Inuzuka, M

Miyasaka, H

Sakurai, I

Tokanai, F

Makishima, K

机构：

[1] RIKEN, Wako, Saitama 3510198, Japan

[2] Tokyo Univ Sci, Dept Phys, Shinjyuku Ku, Tokyo 1628601, Japan

[3] Univ Tokyo, CNS, Wako, Saitama 3510198, Japan

[4] Natl Res Inst Cultural Properties, Taito Ku, Tokyo 1108713, Japan

[5] CALTECH, Pasadena, CA 91125 USA

[6] Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan

[7] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[8] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 560卷 / 02期

关键词：

GEM; gas electron multiplier; gas detector; cosmic X-ray polarimeter;

D O I：

10.1016/j.nima.2006.01.047

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 mu m and the smallest hole diameter is 30 mu 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 mu 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 mu 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. (c) 2006 Elsevier B.V. All rights reserved.

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页码：418 / 424

页数：7

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