class AliESDEvent;
class AliTRDgtuTMU;
+class AliTRDfeeParam;
class TTree;
class TList;
protected:
AliRunLoader *fRunLoader; //!
+ AliTRDfeeParam *fFeeParam; //!
AliTRDgtuTMU *fTMU; // pointer to TMU simulation class
TClonesArray *fTrackletArray; // array of tracklets
TTree *fTrackTree; // tree to hold the tracks of one event, used for writing in WriteTracksToFile()