CBM TRD radiator simulation in CbmRoot

The resulting TR photon yield spectrum is folded with the detector absorption spectrum (presented in Figure 1) to obtain the effective energy deposition spectrum in the active gas volume of the detector. Systematic deviations between measurements and theoretical predictions arising from the material budget between radiator and MWPC and radiator material and irregularity can be compensated by adding an attenuation factor a [0,1], with: ( dN