A propag volume where Cerenkov photons can be produced. Returns a pointer to the corresponding DetElem. Concrete derivative of DrcSRadiator. Implement missing pure virtual functions. Has a pointer to a DrcBar.
Fast propagation is implemented.
Takes absorption, losses at total reflection and loss at the end mirror into account. No glue join yet. More concrete derivatives of DrcSRadiator. In implementing this, an important bug has been identified and fixed in DetSurfaceSet. The DrcManager is a singleton which gives a static access to all the propagation volumes.