Progress with Xenon Liquid Hole Multipliers

Lior Arazi; Eran Erdal; Yevgeniya Korotinsky; Michael Rappaport; Arindam Roy; Sergei Shchemelinin; David Vartsky; Amos Breskin

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arXiv · 1708.00073

Progress with Xenon Liquid Hole Multipliers

Lior Arazi·Eran Erdal·Yevgeniya Korotinsky·Michael Rappaport·Arindam Roy·Sergei Shchemelinin·David Vartsky·Amos Breskin

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Abstract

The bubble-assisted Liquid Hole Multiplier (LHM) is a recently-proposed concept for the combined detection of ionization electrons and primary scintillation photons in noble-liquid time projection chambers. The LHM comprises a perforated micro-pattern electrode (e.g. Thick Gas Electron Multiplier - THGEM, or Gas Electron Multiplier - GEM) immersed in the liquid, with a bubble of the noble gas supported underneath. Ionization electrons and scintillation-induced photoelectrons extracted from a cesium iodide photocathode drift through the electrode's holes and induce electroluminescence (EL) signals in the bubble; these are recorded by photon detectors located closely below the electrode. We present recent results in the development of LHMs, comparing the response of different electrodes to ionization and photon-induced electrons.

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Lior Arazi, Eran Erdal, Yevgeniya Korotinsky, Michael Rappaport, Arindam Roy, Sergei Shchemelinin, David Vartsky, Amos Breskin. 2017-07-31. Progress with Xenon Liquid Hole Multipliers. https://arxiv.org/abs/1708.00073

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