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arXiv · 1603.04820

The Resistive-Plate WELL with Argon mixtures - a robust gaseous radiation detector

L. Moleri·F. D. Amaro·L. Arazi·C. D. R. Azevedo·E. Oliveri·M. Pitt·J. Schaarschmidt·D. Shaked-Renous·J. M. F. dos Santos·J. F. C. A. Veloso·A. Breskin·S. Bressler
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Abstract

A thin single-element THGEM-based, Resistive-Plate WELL (RPWELL) detector was operated with 150 GeV/c muon and pion beams in Ne/(5%CH$_4$), Ar/(5%CH$_4$) and Ar/(7%CO$_2$); signals were recorded with 1 cm$^2$ square pads and SRS/APV25 electronics. Detection efficiency values greater than 98% were reached in all the gas mixtures, at average pad multiplicity of 1.2. The use of the 10$^9${\Omega}cm resistive plate resulted in a completely discharge-free operation also in intense pion beams. The efficiency remained essentially constant at 98-99% up to fluxes of $\sim$10$^4$Hz/cm$^2$, dropping by a few % when approaching 10$^5$ Hz/cm$^2$. These results pave the way towards cost-effective, robust, efficient, large-scale detectors for a variety of applications in future particle, astro-particle and applied fields. A potential target application is digital hadron calorimetry.

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L. Moleri, F. D. Amaro, L. Arazi, C. D. R. Azevedo, E. Oliveri, M. Pitt, J. Schaarschmidt, D. Shaked-Renous, J. M. F. dos Santos, J. F. C. A. Veloso, A. Breskin, S. Bressler. 2016-03-15. The Resistive-Plate WELL with Argon mixtures - a robust gaseous radiation detector. https://doi.org/10.1016/j.nima.2016.06.009

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