Constructor class for TR physics.
This class constructs the TR processes and attaches them to all the logical volumes implemented in the geometry as RadiatorLogicalVolume. The supported models are: G4GammaXTRadiator, G4XTRGammaRadModel, G4RegularXTRadiator, G4TransparentRegXTRadiator, G4XTRRegularRadModel, XTRTransparentRegRadModel. The model can be chosen by passing one the following arguments to the constructor, respectively: "gammaR", "gammaM", "regR", "transpR", "regM", "transpM".
The TR radiation model is applied to the following particles: electron, positron, pi+, pi-, k+, k-, proton, antiproton.