Share Email Print
cover

Proceedings Paper

Heavy ion irradiation test to gas electron multipliers
Author(s): Asami Hayato; Toru Tamagawa; Koji Abe; Satoshi Nakamura; Iwahashi Takanori; Atsushi Harayama; Kazuo Makishima; Nakahiro Yasuda; Hisashi Kitamura; Hirohisa Sakurai; Fuyuki Tokanai
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We have developed the gas electron multiplier (GEM) for applying to a cosmic X-ray polarimeter. For a space use of the GEM, we performed experiments of charged particles irradiation to the GEM as space environmental tests of cosmic rays. The GEM is irradiated with full-striped iron ions with energy of 500 MeV/n, as a result, we found that even if a particle deposits an energy of ~ 2 MeV in the detector, it has no direct effect on the GEM as long as the particle does not hit the GEM directly. In contrast, every time a particle collides with the GEM, it discharges with a probability of 0.4-40% which depending on the count rate, the applied voltage, and energy losses, but the mass of particles does not matter. The predicted count rate of discharges in the space is low enough, so it is negligible compared with a target object. We also found that an irradiation of charged particles for a certain period causes a destruction of the GEM, but the direct reason remains unclear.

Paper Details

Date Published: 15 July 2008
PDF: 8 pages
Proc. SPIE 7011, Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray, 70113W (15 July 2008); doi: 10.1117/12.789903
Show Author Affiliations
Asami Hayato, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Toru Tamagawa, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Koji Abe, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Satoshi Nakamura, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Iwahashi Takanori, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Atsushi Harayama, RIKEN (Japan)
Tokyo Univ. of Science (Japan)
Kazuo Makishima, RIKEN (Japan)
Univ. of Tokyo (Japan)
Nakahiro Yasuda, National Institute of Radiological Sciences (Japan)
Hisashi Kitamura, National Institute of Radiological Sciences (Japan)
Hirohisa Sakurai, Yamagata Univ. (Japan)
Fuyuki Tokanai, Yamagata Univ. (Japan)


Published in SPIE Proceedings Vol. 7011:
Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray
Martin J. L. Turner; Kathryn A. Flanagan, Editor(s)

© SPIE. Terms of Use
Back to Top