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On the operation of a micropattern gaseous UV-photomultiplier in liquid-Xenon

  • S. Duval
  • , Amos Breskin
  • , Ran Budnik
  • , W. T. Chen
  • , H. Carduner
  • , Marco Cortesi
  • , J. P. Cussonneau
  • , J. Donnard
  • , J. Lamblin
  • , Ray, P. Le Ray
  • , E. Morteau
  • , T. Oger
  • , J. S. Stutzmann
  • , D. Thers

Research output: Contribution to journalArticlepeer-review

Abstract

Operation results are presented of a UV-sensitive gaseous photomultiplier (GPM) coupled through a MgF2 window to a liquid-xenon scintillator. It consisted of a reflective CsI photocathode deposited on top of a THick Gaseous Electron Multiplier (THGEM); further multiplication stages were either a second THGEM or a Parallel Ionization Multiplier (PIM) followed by a MICROMEsh GAseous Structure (MICROMEGAS). The GPM operated in gas-flow mode with non-condensable gas mixtures. Gains of 104 were measured with a CsI-coated double-THGEM detector in Ne/CH4(95:5), Ne/CF 4(95:5) and Ne/CH4/CF4 (90:5:5), with soft X-rays at 173 K. Scintillation signals induced by alpha particles in liquid xenon were measured here for the first time with a double-THGEM GPM in He/CH4(92.5:7.5) and a triple-structure THGEM/PIM/MICROMEGAS GPM in Ne/CH4(90:10) with a fast-current preamplifier.

Original languageEnglish GB
Article numberP04007
JournalJournal of Instrumentation
Volume6
Issue number4
DOIs
StatePublished - Apr 2011

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation

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