TRD/AliTRDtrack.h

   1 #ifndef ALITRDTRACK_H
   2 #define ALITRDTRACK_H
   3
   4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   5  * See cxx source for full Copyright notice                               */
   6
   7 /* $Id$ */
   8
   9 ///////////////////////////////////////////////////////////////////////////////
  10 //                                                                           //
  11 //  Represents a reconstructed TRD track                                     //
  12 //                                                                           //
  13 ///////////////////////////////////////////////////////////////////////////////
  14
  15 #include "AliKalmanTrack.h"
  16
  17 #include "AliTRDtracklet.h"
  18
  19 class AliESDtrack;
  20 class AliTrackReference;
  21
  22 const unsigned kMAXCLUSTERSPERTRACK = 210;
  23
  24 class AliTRDtrack : public AliKalmanTrack {
  25
  26  public:
  27
  28   enum { kNdet      = 540
  29        , kNstacks   =  90
  30        , kNplane    =   6
  31        , kNcham     =   5
  32        , kNsect     =  18
  33        , kNslice    =   3
  34        , kNtimeBins =  22 };
  35
  36    AliTRDtrack();
  37    AliTRDtrack(const AliTRDcluster *c, Int_t index, const Double_t xx[5]
  38               ,const Double_t cc[15], Double_t xr, Double_t alpha);
  39    AliTRDtrack(const AliTRDtrack &t);
  40    AliTRDtrack(const AliESDtrack &t);
  41    ~AliTRDtrack();
  42    AliTRDtrack(const AliKalmanTrack &t, Double_t alpha);
  43
  44            void     ResetClusters()                                         { SetChi2(0.0);
  45                                                                               SetNumberOfClusters(0);              }
  46            Int_t    Compare(const TObject *o) const;
  47            void     AddNWrong()                                             { fNWrong++;                           }
  48            void     IncCross()                                              { fNCross++;
  49                                                                               if (fBackupTrack) fBackupTrack->IncCross();  }
  50
  51            Int_t    GetSector() const;
  52            Float_t  GetClusterdQdl(Int_t i) const                           { return fdQdl[i];                     }
  53            Double_t GetdEdx() const                                         { return fdEdx;                        }
  54            Int_t    GetNdedx() const                                        { return fNdedx;                       }
  55            Double_t GetPIDsignal() const                                    { return GetdEdx();                    }
  56            Int_t    GetClusterIndex(Int_t i) const                          { return fIndex[i];                    }
  57            Double_t GetC() const                                            { return AliExternalTrackParam::GetC(GetBz()); }
  58            Double_t GetPredictedChi2(const AliTRDcluster *c, Double_t h01) const;
  59            Float_t  GetPIDsignals(Int_t iPlane, Int_t iSlice) const         { return fdEdxPlane[iPlane][iSlice];   }
  60            Int_t    GetPIDTimBin(Int_t i) const                             { return fTimBinPlane[i];              }
  61            Double_t GetLikelihoodElectron() const                           { return fLhElectron;                  }
  62            Int_t    GetSeedLabel() const                                    { return fSeedLab;                     }
  63            Int_t   *GetBackupIndexes()                                      { return fIndexBackup;                 }
  64            Int_t   *GetIndexes()                                            { return fIndex;                       }
  65            Int_t    GetProlongation(Double_t xk, Double_t &y, Double_t &z);
  66            Bool_t   GetStop() const                                         { return fStopped;                     }
  67            Int_t    GetNRotate() const                                      { return fNRotate;                     }
  68            Int_t    GetNWrong() const                                       { return fNWrong;                      }
  69            Int_t    GetNCross() const                                       { return fNCross;                      }
  70            Int_t    GetNExpected() const                                    { return fNExpected;                   }
  71            Int_t    GetNLast() const                                        { return fNLast;                       }
  72            Int_t    GetNExpectedLast() const                                { return fNExpectedLast;               }
  73   AliTRDtracklet    GetTracklets(Int_t i) const                             { return fTracklets[i];                }
  74            Float_t  GetBudget(Int_t i) const                                { return fBudget[i];                   }
  75            Float_t  GetChi2Last() const                                     { return fChi2Last;                    }
  76   AliTRDtrack      *GetBackupTrack()                                        { return fBackupTrack;                 }
  77
  78            void     SetdEdx(Double_t dedx)                                  { fdEdx                      = dedx;   }
  79            void     SetStop(Bool_t stop)                                    { fStopped                   = stop;   }
  80            void     SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice) { fdEdxPlane[iPlane][iSlice] = dedx;   }
  81            void     SetPIDTimBin(Int_t timbin, Int_t i)                     { fTimBinPlane[i]            = timbin; }
  82            void     SetLikelihoodElectron(Float_t l)                        { fLhElectron                = l;      }
  83            void     SetSampledEdx(Float_t q, Int_t i);
  84            void     SetSampledEdx(Float_t q);
  85            void     SetSeedLabel(Int_t lab)                                 { fSeedLab                   = lab;    }
  86            void     SetNWrong(Int_t nwrong)                                 { fNWrong                    = nwrong; }
  87            void     SetNCross(Int_t ncross)                                 { fNCross                    = ncross; }
  88            void     SetNExpected(Int_t nexp)                                { fNExpected                 = nexp;   }
  89            void     SetNLast(Int_t nlast)                                   { fNLast                     = nlast;  }
  90            void     SetNExpectedLast(Int_t nexp)                            { fNExpectedLast             = nexp;   }
  91            void     SetChi2Last(Float_t chi2)                               { fChi2Last                  = chi2;   }
  92            void     SetTracklets(Int_t i, AliTRDtracklet t)                 { fTracklets[i]              = t;      }
  93            void     SetBudget(Int_t i, Float_t budget)                      { fBudget[i]                 = budget; }
  94
  95            Int_t    PropagateToX(Double_t xr, Double_t step);
  96            Int_t    PropagateToR(Double_t xr, Double_t step);
  97            Int_t    UpdateMI(const AliTRDcluster *c, Double_t chi2, Int_t i, Double_t h01, Int_t plane);
  98            void     MakeBackupTrack();
  99            Bool_t   PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
 100            Bool_t   Update(const AliTRDcluster *c, Double_t chi2, Int_t i, Double_t h01);
 101            Bool_t   Rotate(Double_t angle, Bool_t absolute = kFALSE);
 102            void     CookdEdx(Double_t low = 0.05, Double_t up = 0.7);
 103            Float_t  StatusForTOF();
 104
 105  protected:
 106
 107   AliTRDtrack      &operator=(const AliTRDtrack &t);
 108
 109            Double_t GetBz() const;
 110            Bool_t   Update(const AliCluster */*c*/, Double_t /*chi2*/, Int_t /*idx*/) { return 0;   }
 111            Double_t GetPredictedChi2(const AliCluster* /*c*/) const                   { return 0.0; }
 112
 113            Int_t    fSeedLab;                           //  Track label taken from seeding
 114            Float_t  fdEdx;                              //  dE/dx (truncated mean)
 115            Float_t  fDE;                                //  Integrated delta energy
 116            Float_t  fdEdxPlane[kNplane][kNslice];       //  dE/dx from all 6 planes in 3 slices each
 117            Int_t    fTimBinPlane[kNplane];              //  Time bin of Max cluster from all 6 planes
 118
 119            Bool_t   fStopped;                           //  Track stop indication
 120            Int_t    fIndex[kMAXCLUSTERSPERTRACK];       //  Global indexes of clusters
 121            Int_t    fIndexBackup[kMAXCLUSTERSPERTRACK]; //  Backup indexes of clusters - used in iterations
 122            Float_t  fdQdl[kMAXCLUSTERSPERTRACK];        //  Cluster amplitudes corrected for track angles
 123
 124            Float_t  fLhElectron;                        //  Likelihood to be an electron
 125            Int_t    fNWrong;                            //  Number of wrong clusters
 126            Int_t    fNRotate;                           //  Number of rotation
 127            Int_t    fNCross;                            //  Number of the cross materials
 128            Int_t    fNExpected;                         //  Expected number of cluster
 129            Int_t    fNLast;                             //  Number of clusters in last 2 layers
 130            Int_t    fNExpectedLast;                     //  Number of expected clusters on last 2 layers
 131            Int_t    fNdedx;                             //  Number of clusters for dEdx measurment
 132            Float_t  fChi2Last;                          //  Chi2 in the  last 2 layers
 133    AliTRDtracklet   fTracklets[6];                      //  Tracklets
 134            Float_t  fBudget[3];                         //  Integrated material budget
 135    AliTRDtrack     *fBackupTrack;                       //! Backup track
 136
 137    ClassDef(AliTRDtrack,8)                              //  TRD reconstructed tracks
 138
 139 };
 140
 141 #endif