Performance study of novel micro-Resistive WELL (μ-RWELL) detector in different gas mixtures

Abstract

Abstract Versatility of micro-pattern gaseous detectors (MPGD) make them suitable for the use in various fields of study, e.g. nuclear physics, particle physics, dark matter physics along with a wide range of medical and security applications. Our primary interest was to implement the novel μ-RWELL (micro-Resistive WELL) detector as the gas amplification stage in TACTIC, a cylindrical active target time projection chamber (TPC) designed to study nuclear reactions with astrophysical significance. In preparation towards their installation inside TACTIC, the performance and characteristics of μ-RWELL were studied in a test chamber, a planar analogue of TACTIC. This work reports the high gas gains achieved in Ar:CH4 and He:CO2 and a study of the charging-up effect in He:CO2.