Single-electron spectra in RPWELL-based detectors

Purba Bhattacharya, Andrea Tesi, Dan Shaked-Renous, Luca Moleri, Amos Breskin, Shikma Bressler

Research output: Contribution to journalArticlepeer-review

Abstract

 Single-electron spectra are the key ingredient in the efficient detection of single UV-photons. In this work, we investigated the shape of single-photoelectron spectra in single and double-stage Resistive Plate WELL (RPWELL) detector configurations, operated in Ne/CH4 and Ar/CH4. Discharge-free operation was reached over a broad dynamic range, with charge gains of 104 -106. Compared to the usual exponential ones, the observed Polya-like charge spectra pave the way towards higher single-electron detection efficiencies. The latter was evaluated here, using experimental data combined with numerical simulations. The effects of the gas mixtures, electric field configuration, and detector geometry on the Polya spectra and their related “𝜃” parameter are presented. 
Original languageEnglish
Article numberP05004
JournalJournal of Instrumentation
Volume16
Issue number5
DOIs
StatePublished - May 2021

Keywords

  • Charge transport and multiplication in gas
  • Electron multipliers (gas)
  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
  • Photon detectors for UV, visible and IR photons (gas) (gas-photocathodes, solidphotocathodes)

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics

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