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

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 نشر من قبل Makoto Kobayashi
 تاريخ النشر 2019
  مجال البحث فيزياء
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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 $^{55}$Fe 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.



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