Geant4 {#geant4}

Geant4 is a toolkit for simulating how particles pass through matter. It is available through the geant4 package.

Setup hook {#geant4-hook}

The setup hook included in the package applies the environment variables set by the geant4.sh script, which is typically necessary for compiling make-based programs that depend on Geant4.

Datasets {#geant4-datasets}

All of the Geant4 datasets provided by CERN are available through the geant4.data attrset.

Setup hook {#geant4-datasets-hook}

The hook provided by the packages in geant4.data will set an appropriate environment variable in the form of G4[...]DATA. For example, for the G4RadioactiveDecay dataset, the G4RADIOACTIVEDATA environment variable is set to the value expected by Geant4.