Performance of resistive MPGDs with pad readout coupled to VMM3a ASIC

TL;DR

This study compares three resistive MPGD technologies with VMM3a readout, evaluating their efficiency, stability, and suitability for different experimental conditions using relativistic muons and pions.

Contribution

It provides a comparative analysis of Micromegas, RPWELL, and μ-RWELL detectors with VMM3a readout, highlighting their operational stability and advantages.

Findings

All detectors achieved over 96% efficiency.

Continuous readout allowed stability studies near breakdown voltages.

Different technologies offer unique advantages for various experimental setups.

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 $\mathrm{Ar/CO_2/iC_4H_{10}}$ gas mixture, while the $\mu\mathrm{-RWELL}$ in $\mathrm{Ar/CO_2/CF_4}$ (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.