class AliTrackHitsParamV2: public TObject

Time Projection Chamber  track hits object

  Origin: Marian Ivanov , GSI Darmstadt

 AliTPCTrackHitsV2
   Container for Track Hits - based on standard TClonesArray -
   fArray of AliTPCTrackHitsParamV2
   In AliTPCTrackHitsParamV2 - parameterization of the track segment  is stored
   for each of the track segment - relative position ( distance between  hits) and
   charge of the hits is stored - comparing to classical TClonesArray of AliTPChit -
   comperssion factor of 5-7 (depending on the required precision) -
   In future release AliTPCTrackHitsV2 - will replace old AliTPCTrackHits - which were not
   based on standard ROOT containers
   Basic function:
      // during building Container
   AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, Double_t y, Double_t z,Int_t q)
   void SetHitPrecision(Double_t prec) {fPrecision=prec;}
   void SetStepPrecision(Double_t prec) {fStep=prec;}
   Bool_t  FlushHitStack(Bool_t force=kTRUE);
      //at the end necessary to have Container in consistent state

     // looping over Container
   Bool_t  First(), Bool_t Next() - iterators - return status of the operation
   AliTPChit * GetHit(); - return current hit