TH2F *fHistAbso; //Interaction length map
TH2F *fHistGcm2; //g/cm2 length map
TH2F *fHistReta; //Radiation length map as a function of eta
+ TH2F *fRZR; // Radiation lenghts at (R.Z)
+ TH2F *fRZA; // Absorbtion lengths at (R,Z)
+ TH2F *fRZG; // Density at (R,Z)
TClonesArray *fVolumesFwd; //!Volume sequence forward
TClonesArray *fVolumesBwd; //!Volume sequence backward
Int_t fStepBack; //!Flag for backstepping