First demonstration of VUV-photon detection in liquid xenon with THGEM and GEM-based Liquid Hole Multipliers

E. Erdal, L. Arazi, M. L. Rappaport, S. Shchemelinin, D. Vartsky, A. Breskin

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The bubble-assisted Liquid Hole-Multiplier (LHM) is a recently-introduced detection concept for noble-liquid time projection chambers. In this “local dual-phase” detection element, a gas bubble is supported underneath a perforated electrode (e.g., Thick Gas Electron Multiplier – THGEM, or Gas Electron Multiplier – GEM). Electrons drifting through the holes induce large electroluminescence signals as they pass into the bubble. In this work we report on recent results of THGEM and GEM electrodes coated with cesium iodide and immersed in liquid xenon, allowing – for the first time – the detection of primary VUV scintillation photons in addition to ionization electrons.

Original languageEnglish
Pages (from-to)218-221
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume845
DOIs
StatePublished - 11 Feb 2017
Externally publishedYes

Keywords

  • Cesium iodide
  • Gas Electron Multiplier (GEM)
  • Liquid Hole-Multipliers
  • Micro-Pattern Gas Detectors (MPGD)
  • Noble-liquid detectors
  • Thick Gas Electron Multiplier (THGEM)

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