Gain stabilization in Micro Pattern Gaseous Detectors: methodology and results

Abstract

The phenomenon of avalanche-gain variations over time, particularly in Micro Pattern Gaseous Detectors (MPGD) incorporating insulator materials, have been generally attributed to electric-field modifications resulting from "charging-up" effects of the insulator. A robust methodology for characterization of gain-transients in such detectors is presented. It comprises three guidelines: detector initialization, long-gain stabilization monitoring and imposing transients by applying abrupt changes in operation conditions. Using THWELL and RPWELL detectors, we validated the proposed methodology by assessing a charging-up/charging-down model describing the governing processes of gain stabilization. The results provide a deeper insight into these processes, reflected by different transients upon abrupt variations of detector gain or the irradiation rate. This methodology provides a handle for future investigations of the involved physics phenomena in MPGD detectors comprising insulating components.

References in corpus (10)

• THGEM operation in Ne and Ne/CH4
• First studies with the Resistive-Plate WELL gaseous multiplier
• THGEM-based detectors for sampling elements in DHCAL: laboratory and beam evaluation
• Laboratory studies of THGEM-based WELL structures with resistive anodes
• A dynamic method for charging-up calculations: the case of GEM
• First in-beam studies of a Resistive-Plate WELL gaseous multiplier
• The Resistive-Plate WELL with Argon mixtures - a robust gaseous radiation detector
• Studies of THGEM-based detector at low-pressure Hydrogen/Deuterium, for AT-TPC applications
• Thick GEM-like (THGEM) detectors and their possible applications
• In-beam evaluation of a medium-size Resistive-Plate WELL gaseous particle detector

Cited by in corpus (8)

• Measurements of charging-up processes in THGEM-based particle detectors
• Simulation of gain stability of THGEM gas-avalanche particle detectors
• The Thick Gas Electron Multiplier and its derivatives: physics, technologies and applications
• Recent Advances in Bubble-Assisted Liquid Hole Multipliers in Liquid Xenon
• Measurements of the Charging-Up Effect in Gas Electron Multipliers
• Electrical breakdown in Thick-GEM based WELL detectors
• First results of Resistive-Plate Well (RPWELL) detector operation at 163 K
• Single Electron Spectra in RPWELL-based detectors