Properties of the flight model gas electron multiplier for the GEMS mission

Yoko Takeuchi; Takao Kitaguchi; Asami Hayato; Toru Tamagawa; Wataru Iwakiri; Fumi Asami; Akifumi Yoshikawa; Kenta Kaneko; Teruaki Enoto; Kevin Black; Joanne E. Hill; Keith Jahoda

doi:10.1117/12.2057159

24 July 2014 Properties of the flight model gas electron multiplier for the GEMS mission

Yoko Takeuchi, Takao Kitaguchi, Asami Hayato, Toru Tamagawa, Wataru Iwakiri, Fumi Asami, Akifumi Yoshikawa, Kenta Kaneko, Teruaki Enoto, Kevin Black, Joanne E. Hill, Keith Jahoda

Author Affiliations +

Proceedings Volume 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray; 91444N (2014) https://doi.org/10.1117/12.2057159
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

We present the gain properties of the gas electron multiplier (GEM) foil in pure dimethyl ether (DME) at 190 Torr. The GEM is one of the micro pattern gas detectors and it is adopted as a key part of the X-ray polarimeter for the GEMS mission. The X-ray polarimeter is a time projection chamber operating in pure DME gas at 190 Torr. We describe experimental results of (1) the maximum gain the GEM can achieve without any discharges, (2) the linearity of the energy scale for the GEM operation, and (3) the two-dimensional gain variation of the active area. First, our experiment with 6.4 keV X-ray irradiation of the whole GEM area demonstrates that the maximum effective gain is 2 x 10⁴ with the applied voltage of 580 V. Second, the measured energy scale is linear among three energies of 4.5, 6.4, and 8.0 keV. Third, the two-dimensional gain mapping test derives the standard deviation of the gain variability of 7% across the active area.

Citation Download Citation

Yoko Takeuchi, Takao Kitaguchi, Asami Hayato, Toru Tamagawa, Wataru Iwakiri, Fumi Asami, Akifumi Yoshikawa, Kenta Kaneko, Teruaki Enoto, Kevin Black, Joanne E. Hill, and Keith Jahoda "Properties of the flight model gas electron multiplier for the GEMS mission", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91444N (24 July 2014); https://doi.org/10.1117/12.2057159

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available