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Geant4 Version

The following table lists the appropriate Geant4 version to be used with TOPAS.

TOPAS version	Geant4 version
OpenTOPAS v4.2.0	11.3.2

For information pertaining to the appropriate Geant4 version/release notes of earlier versions of the software, please refer to the old documentation.

Warning

Extensive testing for compatibility with specific Geant4 versions is carried out by the TOPAS collaboration. We therefore cannot guarantee proper functioning for an OpenTOPAS version built with a Geant4 version other than is listed in the table above.