Geant4

Geant4 is the essential toolkit for simulating and visualizing particle-matter interactions. It offers a robust, modular framework for defining experimental geometries, selecting physics processes, and running detailed Monte Carlo simulations of particle transport. The generated data—tracking every interaction—is rich but complex. Therefore, Geant4 includes advanced visualization drivers that render this data graphically. Users can create event displays, slice through geometries, and animate particle showers, making it easier to interpret results, verify simulation accuracy, and present findings. This combination of high-fidelity simulation and intuitive visualization supports groundbreaking work in fields ranging from nuclear medicine and space science to fundamental physics research.