New approach to 3D electrostatic calculations for micro-pattern detectors

TL;DR

This paper introduces a novel boundary element method called Robin Hood for precise, approximation-free electrostatic calculations in micropattern detectors, enabling detailed analysis of electric fields, electron transparency, and gains in complex detector geometries.

Contribution

The paper presents a new boundary element method that handles large boundary element counts with high accuracy, extending electrostatic calculations to complex micropattern detectors including dielectric materials.

Findings

Accurate electrostatic calculations for micromesh detectors.

Comparison of electron transparencies and gains across different mesh types.

Inclusion of dielectric materials in electric field simulations.

Abstract

We demonstrate practically approximation-free electrostatic calculations of micromesh detectors that can be extended to any other type of micropattern detectors. Using newly developed Boundary Element Method called Robin Hood Method we can easily handle objects with huge number of boundary elements (hundreds of thousands) without any compromise in numerical accuracy. In this paper we show how such calculations can be applied to Micromegas detectors by comparing electron transparencies and gains for four different types of meshes. We demonstrate inclusion of dielectric material by calculating the electric field around different types of dielectric spacers.