Optical readout: A tool for studying gas-avalanche processes

A. Rubin, L. Arazi, S. Bressler, A. Dery, L. Moleri, M. Pitt, D. Vartsky, A. Breskin

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Optical recording of avalanche-induced photons is an interesting tool for studying basic physics processes in gaseous detectors. In this work we demonstrate the potential of optical readout in avalanche-propagation investigations in Thick Gas Electron Multipliers (THGEMs) operated with Ne/CF4 (95/5). We present the results of direct measurements with single- and cascaded-THGEM detectors irradiated with soft x-rays, of the hole-multiplicity and avalanche asymmetry within holes as a function of detector parameters. Further study directions are discussed.

Original languageEnglish
Article numberP08001
JournalJournal of Instrumentation
Issue number8
StatePublished - 1 Aug 2013
Externally publishedYes


  • Charge transport and multiplication in gas
  • Gaseous imaging and tracking detectors
  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
  • Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics


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