Abstract
We present the results of the first in-beam studies of a medium size (10 x 10 cm2) Resistive-Plate WELL (RPWELL): a single-sided THGEM coupled to a pad anode through a resistive layer of high bulk resistivity (similar to 109 Ωcm). 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 cm2 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 104, reaching 99% detection efficiency at average pad multiplicity of ∼ 1.2. Operation at particle fluxes up to similar to 104 Hz/cm2 resulted in ∼ 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 language | English |
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Article number | P01005 |
Journal | Journal of Instrumentation |
Volume | 11 |
Issue number | 1 |
DOIs | |
State | Published - 12 Jan 2016 |
Keywords
- Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
- Resistive-plate chambers
All Science Journal Classification (ASJC) codes
- Instrumentation
- Mathematical Physics