Development of gating foils to inhibit ion feedback using fpc production techniques

D. Arai, K. Ikematsu, A. Sugiyama, M. Iwamura, A. Koto, K. Katsuki, K. Fujii, T. Matsuda

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


Positive ion feedback from a gas amplification device to the drift region of the Time Projection Chamber for the ILC can deteriorate the position resolution. In order to inhibit the feedback ions. MPGD-based gating foils having good electron transmission have been developed to be used instead of the conventional wire gate. The gating foil needs to control the electric field locally in opening or closing the gate. The gating foil with a GEM (gas electron multiplier)-like structure has larger holes and smaller thickness than standard GEMs for gas amplification. It is known that the foil transmits over 80 % of electrons and blocks ions almost completely. We have developed the gating foils using flexible printed circuit (FPC) production techniques including an improved single-mask process. In this paper, we report on the production technique of 335 μm pitch. 12.5 μm thick gating foil with 80 % transmittance of electrons in ILC conditions.

Original languageEnglish
Article number02007
JournalEPJ Web of Conferences
Publication statusPublished - 2018 Feb 21
Event4th International Conference on MicroPattern Gaseous Detectors, MPGD 2015 - Trieste, Italy
Duration: 2015 Oct 122015 Oct 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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