First Imaging Results of a Bubble-assisted Liquid Hole Multiplier with SiPM readout in Liquid Xenon

Abstract

First imaging results in liquid xenon of a Liquid Hole Multiplier (LHM) coupled to a Quad-Silicon Photomultiplier (SiPM) array are presented. Ionization electrons deposited in the noble liquid by 5.5 MeV alpha particles, are collected into the holes of a Thick Gas Electron Multiplier (THGEM) electrode having a xenon gas bubble trapped underneath. They drift through the liquid-gas interface, inducing electroluminescence within the bubble. The resulting photons are detected with a Hamamatsu VUV4 quad-SiPM array - providing the deposited energy with a charge-only RMS resolution of 6.6%. The image reconstruction resolution was estimated to be ~200 um (RMS).

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Cited by in corpus (7)

• Direct Detection of Dark Matter -- APPEC Committee Report
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Bubble-assisted Liquid Hole Multipliers in LXe and LAr: towards "local dual-phase TPCs"
• First demonstration of a bubble-assisted Liquid Hole Multiplier operation in liquid argon
• Novel electron and photon recording concepts in noble-liquid detectors
• Electron transfer efficiency in liquid xenon across THGEM holes
• Bubble dynamics in Liquid Hole Multipliers