Cerenkov process

You can activate the Cerenkov processes for all charged particles with the user command:

/gamos/physics/addPhysics cerenkov

Several parameters can be set before this command to control the Cerenkov process:

/gamos/setParam GmPhysicsCerenkov:MaxNumPhotonsPerStep VALUE

limits the step size by specifying a maximum (average) number of Cerenkov photons created during the step. The default value is 0, i.e. no limit.

/gamos/setParam GmPhysicsCerenkov:TrackSecondariesFirst 1

serves to avoid blowing up the memory by the thousands of photons that may be created at one step. by tracking the secondary photons at the moment they are created; this means that the primary particle is stopped and later it is restarted.

/gamos/setParam GmPhysicsCerenkov:MaxBetaChange VALUE

sets the maximum allowed change in beta = v/c in % (perCent). The default value is 0, i.e. no limit.