First In-Beam Studies Of A Resistive-Plate Well Gaseous Multiplier

Shikma Bressler, Luca Moleri, Michael Pitt, S. Kudella, C. D. R. Azevedo, Fernando Domingues Amaro, M.R. Jorge, Joaquim Marques Ferreira dos Santos, Joao Filipe Calapez de Albuquerque Veloso, Hugo Natal da Luz, Lior Arazi, E. Olivierie, Amos Breskin, E. Olivieri

Research output: Contribution to journalArticlepeer-review


We present the results of the first in-beam studies of a medium size (10 x 10 cm(2)) Resistive-Plate WELL (RPWELL): a single-sided THGEM coupled to a pad anode through a resistive layer of high bulk resistivity (similar to 10(9) Omega cm). The 6.2 mm thick (excluding readout electronics) single-stage detector was studied with 150 GeV muons and pions. Signals were recorded from 1 x 1 cm(2) square copper pads with APV25-SRS readout electronics. The single-element detector was operated in Ne/(5%CH4) at a gas gain of a few times 10(4), reaching 99% detection efficiency at average pad multiplicity of similar to 1.2. Operation at particle fluxes up to similar to 10(4) Hz/cm(2) resulted in similar to 23% gain drop leading to similar to 5% efficiency loss. The striking feature was the discharge-free operation, also in intense pion beams. These results pave the way towards robust, efficient large-scale detectors for applications requiring economic solutions at moderate spatial and energy resolutions.
Original languageEnglish
Article numberP01005
Number of pages14
JournalJournal of Instrumentation
Issue number1
StatePublished - 12 Jan 2016


  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
  • Resistive-plate chambers

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Mathematical Physics


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