Example applications of the Geant4 simulation toolkit

High Energy Physics

BaBar: The BaBar simulation reproduces in detail the generation of events at the interaction point, the propagation of the resulting particles through the detector and the response of the detector to these particles. Detector response quantities are then used to construct candidate events which may analyzed as if they were real data.
ATLAS (LHC): Brief description of how GEANT4 is used in the ATLAS Detector Simulation.
OSCAR (LHC): Brief description of how GEANT4 is used in the in the Object oriented Simulation for CMS Analysis and Reconstruction.
GAUSS (LHC): Brief description of how GEANT4 is used in the Gauss simulation program of the LHCb experiment.
ALICE: Brief description of how GEANT4 is used in the ALICE Geant4 Simulation.

SEPTIMESS: Space Energetic Particle Transport and Interaction Modeling studies
REAT: Radiation Effects Analysis Tools
INTAS: High-Energy Interplanetary Radiation Fields and Radiation Effect Simulation for Spacecraft Missions
European Space Agency: Energetic Particle Shielding and Interaction Tools; XMM-Newton Radiation Environment; Space Environment Information System (SPENVIS)
DESIRE: The aim of the DESIRE project is to calculate the radiation levels inside the Columbus International Space Station (ISS) module, and from these estimate the doses received by astronauts and equipment.
GLAST: Gamma Ray Large Area Space Telescope