A Comparative Numerical Study on GEM, MHSP and MSGC

TL;DR

This paper uses advanced numerical simulations to analyze the physical processes and key characteristics of GEM, MHSP, and MSGC micro-pattern gas detectors, validating the simulation framework against experimental data.

Contribution

It introduces a comprehensive simulation framework combining multiple packages to model the dynamics of MPGDs with micro hole and strip geometries, providing detailed insights.

Findings

Simulation results closely match experimental data

Framework effectively models complex detector processes

Provides detailed understanding of gain, transparency, and efficiency

Abstract

In this work, we have tried to develop a detailed understanding of the physical processes occurring in those variants of Micro Pattern Gas Detectors (MPGDs) that share micro hole and micro strip geometry, like GEM, MHSP and MSGC etc. Some of the important and fundamental characteristics of these detectors such as gain, transparency, efficiency and their operational dependence on different device parameters have been estimated following detailed numerical simulation of the detector dynamics. We have used a relatively new simulation framework developed especially for the MPGDs that combines packages such as GARFIELD, neBEM, MAGBOLTZ and HEED. The results compare closely with the available experimental data. This suggests the efficacy of the framework to model the intricacies of these micro-structured detectors in addition to providing insight into their inherent complex dynamical processes.