Geant4 validation with CMS calorimeters test-beam data

TL;DR

This paper validates Geant4 simulations against CMS calorimeter test-beam data, focusing on hadronic shower modeling to improve detector response accuracy for high-energy physics experiments.

Contribution

It provides a comprehensive validation and tuning of Geant4 physics models using CMS calorimeter test-beam data across a broad energy spectrum.

Findings

Validated Geant4 models against test-beam data

Tuned models for accurate energy response and shower profiles

Established procedures for reproducing detector signals

Abstract

CMS experiment is using Geant4 for Monte-Carlo simulation of the detector setup. Validation of physics processes describing hadronic showers is a major concern in view of getting a proper description of jets and missing energy for signal and background events. This is done by carrying out an extensive studies with test beam using the prototypes or real detector modules of the CMS calorimeter. These data are matched with Geant4 predictions. Tuning of the Geant4 models is carried out and steps to be used in reproducing detector signals are defined in view of measurements of energy response, energy resolution, transverse and longitudinal shower profiles for a variety of hadron beams over a broad energy spectrum between 2 to 300 GeV/c.