The effect of spacers on the performance of Micromegas detectors: a numerical investigation

TL;DR

This study uses numerical simulations to analyze how spacers influence key performance metrics of Micromegas detectors with different geometries, aiming to optimize their design for high-rate experiments.

Contribution

It provides a detailed numerical investigation of the impact of spacers on Micromegas detector characteristics across various geometries, which was not extensively studied before.

Findings

Spacers affect electron transparency, gain, and signal in Micromegas detectors.

The impact varies with amplification gap and mesh hole pitch.

Simulation results guide optimal spacer design for improved detector performance.

Abstract

Micromegas detector is considered to be a promising candidate for a large variety of high-rate experiments. Micromegas of various geometries have already been established as appropriate for these experiments for their performances in terms of gas gain uniformity, energy and space point resolution, and their capability to efficiently pave large read-out surfaces with minimum dead zone. The present work investigates the effect of spacers on different detector characteristics of Micromegas detectors having various amplification gaps and mesh hole pitches. Numerical simulation has been used as a tool of exploration to evaluate the effect of such dielectric material on detector performance. Some of the important and fundamental characteristics such as electron transparency, gain and signal of the Micromegas detector have been estimated.