Measurement of the electron transmission rate of the gating foil for the TPC of the ILC experiment

M. Kobayashi, T. Ogawa, A. Shoji, Y. Aoki, K. Ikematsu, P. Gros, T. Kawaguchi, D. Arai, M. Iwamura, K. Katsuki, A. Koto, M. Yoshikai, K. Fujii, T. Fusayasu, Y. Kato, S. Kawada, T. Matsuda, S. Narita, K. Negishi, H. QiR. D. Settles, A. Sugiyama, T. Takahashi, J. Tian, T. Watanabe, R. Yonamine

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


We have developed a gating foil for the time projection chamber envisaged as a central tracker for the international linear collider experiment. It has a structure similar to the Gas Electron Multiplier (GEM) with a higher optical aperture ratio and functions as an ion gate without gas amplification. The transmission rate for electrons was measured in a counting mode for a wide range of the voltages applied across the foil using an 55Fe source and a laser in the absence of a magnetic field. The blocking power of the foil against positive ions was estimated from the electron transmissions.

Original languageEnglish
Pages (from-to)41-53
Number of pages13
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2019 Feb 21


  • Electron transmission
  • ILC
  • Ion gating
  • Positive ions
  • TPC

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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