Details

Autor(en) / Beteiligte

• Yoshikawa, A.
• Tamagawa, T.
• Iwahashi, T.
• Asami, F.
• Takeuchi, Y.
• Hayato, A.
• Hamagaki, H.
• Gunji, T.
• Akimoto, R.
• Nukariya, A.
• Hayashi, S.
• Ueno, K.
• Ochi, A.
• Oliveria, R.

Titel

Development of Resistive Electrode Gas Electron Multiplier (RE-GEM)

Ist Teil von

• Journal of instrumentation, 2012-06, Vol.7 (6), p.1-9

Ort / Verlag

Goddard Space Flight Center: IOP Science

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We successfully produced Resistive-Electrode Gas Electron Multiplier (RE-GEM) which has resistive electrodes instead of the metal ones which are employed for the standard GEM foils. RE-GEM has a resistive electrode of 25 micron-thick and an insulator layer of 100 micron-thick. The hole structure of RE-GEM is a single conical with the wider and narrower hole diameters of 80 micron and 60 micron, respectively. A hole pitch of RE-GEM is 140 micron. We obtained the maximum gain of about 600 and the typical energy resolution of about 20% (FWHM) at an applied voltage between the resistive electrodes of 620 V, using a collimated 8 keV X-rays from a generator in a gas mixture of 70% Ar and 30% CO2 by volume at the atmospheric pressure. We measured the effective gain as a function of the electric field of the drift region and obtained the maximum gain at an drift field of 0.5 kV/cm.