Precision analysis of Geant4 condensed transport effects on energy deposition in detectors

TL;DR

This paper evaluates how different Geant4 algorithms for condensed transport affect energy deposition simulations in detectors, comparing results with experimental data to assess accuracy.

Contribution

It provides a detailed comparison of multiple Geant4 versions' multiple scattering algorithms and their impact on simulation accuracy for energy deposition.

Findings

Geant4 algorithms significantly influence energy deposition patterns.

Simulation results vary across Geant4 versions and algorithms.

Comparison with experimental data highlights areas for algorithm improvement.

Abstract

A comprehensive analysis of the effects of Geant4 algorithms for condensed transport in detectors is in progress. The first phase of the project focuses on electron multiple scattering, and studies two related observables: the longitudinal pattern of energy deposition in various materials, and the fraction of backscattered particles. The quality of the simulation is evaluated through comparison with high precision experimental measurements; several versions of Geant4 are analyzed to provide an extensive overview of the evolution of Geant4 multiple scattering algorithms and of their contribution to simulation accuracy.