What does this research mean for the field?

Geant4 electromagnetic models demonstrate varying degrees of compatibility with NIST reference data, with specific strengths identified for different models. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to evaluate how well Geant4 electromagnetic models match NIST reference data.

March 5, 2026Open Access

Comparison of Geant4 Electromagnetic Physics Models Against the Nist Reference Data

AKAmako Katsuya GMGrazia Pia Maria GSGuatelli Susanna

Key Points

This research aims to evaluate how well Geant4 electromagnetic models match NIST reference data.
Conducted a series of comparisons between Geant4 models and NIST data.
Performed a statistical analysis to measure compatibility between the datasets.
Assessed strengths of various Geant4 models based on the comparisons.
Found varying levels of compatibility between Geant4 models and NIST data.
Identified specific strengths of different Geant4 electromagnetic models.

Abstract

The Geant4 Simulation Toolkit provides an ample set of physics models describing electromagnetic interactions of particles with matter. This paper presents the results of a series of comparisons for the evaluation of Geant4 electromagnetic processes with respect to NIST reference data. A statistical analysis was performed to estimate quantitatively the compatibility of Geant4 electromagnetic models with NIST data; the statistical analysis also highlighted the respective strengths of the different Geant4 models

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