Mantis: a framework and toolkit for Geant4-based simulation in CMS

Mantis is a framework and toolkit for Geant4-based interactive or batch simulation using the CMS OO architecture implemented in the COBRA project. Mantis provides the infrastructure for the selection, implementation, configuration and tuning of all essential simulation elements: detector geometry, sensitive detectors and hits, generators and physics, magnetic field, visualisation, run and event management, and user monitoring actions. Persistency and other important services are available using the standard COBRA infrastructure and are transparent to user applications.