Performance of resistive MPGDs with pad readout coupled to VMM3a ASIC

Abstract

We present a comparative study of three resistive Micro-Pattern Gaseous Detector (MPGD) technologies - Micromegas, RPWELL, and $\mu -\mathrm{RWELL}$ - with VMM3a based readout, using relativistic muons and pions. The Micromegas and the RPWELL were operated in $Ar/C{\mathrm{O}}_2/i{\mathrm{C}}_4{\mathrm{H}}_{10}$ gas mixture, while the $\mu -\mathrm{RWELL}$ in $Ar/C{\mathrm{O}}_2/C{\mathrm{F}}_4$ (greenhouse gas containing mixture). All detectors operated stably exceeding 96% efficiency. The usage of continuous readout enabled studies of detector electrical instabilities in- and off-beam at near breakdown voltages. Each technology has different advantages making it more suitable for various experimental conditions.

17 pages, 16 figures