Bubble-assisted Liquid Hole Multipliers in LXe and LAr: towards "local dual-phase TPCs"

E. Erdal, L. Arazi, A. Breskin, S. Shchemelinin, A. Roy, A. Tesi, D. Vartsky, S. Bressler

Research output: Contribution to journalArticlepeer-review


The bubble-assisted Liquid Hole Multiplier (LHM) is a novel concept for the combined detection of ionization electrons and scintillation photons in noble-liquid time projection chambers. It consists of a perforated electrode immersed in the noble liquid, with heating wires generating a stable vapor bubble underneath. Radiation-induced ionization electrons in the liquid drift into the electrode's holes and cross the liquid-vapor interface into the bubble where they induce electroluminescence (EL). The top surface of the electrode is optionally coated with a CsI photocathode; radiation-induced UV-scintillation photons extract photoelectrons that induce EL in a similar way. EL-photons recorded with an array of photo-sensors, e.g. SiPMs, provide event localization. We present the basic principles of the LHM concept and summarize the results obtained in LXe and LAr.

Original languageEnglish
Article numberC04002
Number of pages10
JournalJournal of Instrumentation
Issue number4
StatePublished - 1 Apr 2020
EventConference on Light Detection in Noble Elements (LIDINE) - Manchester
Duration: 28 Aug 201930 Aug 2019


  • Charge transport
  • GEM
  • MHSP
  • Micropattern gaseous detectors (MSGC
  • Noble liquid detectors (scintillation
  • double-phase)
  • etc)
  • ionization
  • multiplication and electroluminescence in rare gases and liquids

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics


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