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 "AliESDtrack.h"
  16 #include "AliKalmanTrack.h"
  17
  18 #include "AliTRDtracklet.h"
  19
  20 #ifndef ALITRDSEEDV1_H
  21 #include "AliTRDseedV1.h"
  22 #endif
  23
  24 class AliTrackReference;
  25 class AliTRDcluster;
  26 class AliTRDtrack : public AliKalmanTrack {
  27
  28  public:
  29
  30   enum { kMAXCLUSTERSPERTRACK = 210 };
  31
  32   enum { kNdet      = 540
  33        , kNstacks   =  90
  34        , kNplane    =   AliESDtrack::kTRDnPlanes
  35        , kNcham     =   5
  36        , kNsect     =  18
  37        , kNslice    =   3
  38        , kNMLPslice =   8 };
  39
  40   enum AliTRDPIDMethod {
  41          kNN = 0
  42        , kLQ = 1 };
  43
  44          AliTRDtrack();
  45          AliTRDtrack(/*const*/ AliTRDcluster *c, Int_t index
  46                    , const Double_t xx[5], const Double_t cc[15]
  47                    , Double_t xr, Double_t alpha);
  48          AliTRDtrack(const AliTRDtrack &t/*, const Bool_t owner = kTRUE*/);
  49          AliTRDtrack(const AliESDtrack &t);
  50  virtual ~AliTRDtrack();
  51          AliTRDtrack(const AliKalmanTrack &t, Double_t alpha);
  52
  53          void            ResetClusters()                              { SetChi2(0.0);
  54                                                                         SetNumberOfClusters(0);              }
  55          Int_t           Compare(const TObject *o) const;
  56          void            AddNWrong()                                  { fNWrong++;                           }
  57          void            IncCross()                                   { fNCross++;
  58                                                                         if (fBackupTrack)
  59                                                                           fBackupTrack->IncCross();          }
  60
  61          Int_t           GetSector() const;
  62          Float_t         GetClusterdQdl(Int_t i) const                { return fdQdl[i];                     }
  63          Double_t        GetdEdx() const                              { return fdEdx;                        }
  64          Int_t           GetNdedx() const                             { return fNdedx;                       }
  65          Double_t        GetPIDsignal() const                         { return GetdEdx();                    }
  66          Int_t           GetClusterIndex(Int_t i) const               { return fIndex[i];                    }
  67          Double_t        GetC() const                                 { return AliExternalTrackParam
  68                                                                              ::GetC(GetBz());                }
  69          Double_t        GetPredictedChi2(const AliTRDcluster *c
  70                                         , Double_t h01) const;
  71          AliTRDPIDMethod GetPIDMethod() const                         { return fPIDmethod;                   }
  72          Float_t         GetPIDsignals(Int_t iPlane
  73                                      , Int_t iSlice) const            { return fdEdxPlane[iPlane][iSlice];   }
  74          Int_t           GetPIDTimBin(Int_t i) const                  { return fTimBinPlane[i];              }
  75          Double_t        GetLikelihoodElectron() const                { return fLhElectron;                  }
  76          Int_t           GetSeedLabel() const                         { return fSeedLab;                     }
  77          Int_t          *GetBackupIndexes()                           { return fIndexBackup;                 }
  78          Int_t          *GetIndexes()                                 { return fIndex;                       }
  79          Int_t           GetProlongation(Double_t xk
  80                                        , Double_t &y
  81                                        , Double_t &z);
  82          Bool_t          GetStop() const                              { return fStopped;                     }
  83          Int_t           GetNRotate() const                           { return fNRotate;                     }
  84          Int_t           GetNWrong() const                            { return fNWrong;                      }
  85          Int_t           GetNCross() const                            { return fNCross;                      }
  86          Int_t           GetNExpected() const                         { return fNExpected;                   }
  87          Int_t           GetNLast() const                             { return fNLast;                       }
  88          Int_t           GetNExpectedLast() const                     { return fNExpectedLast;               }
  89          AliTRDtracklet  GetTracklets(Int_t i) const                  { return fTracklets[i];                }
  90          Float_t         GetBudget(Int_t i) const                     { return fBudget[i];                   }
  91          Float_t         GetChi2Last() const                          { return fChi2Last;                    }
  92          AliTRDtrack    *GetBackupTrack()                             { return fBackupTrack;                 }
  93          // dummy to bridge the function in AliTRDtrackV1
  94          //Int_t          GetNumberOfClusters() const                   { printf("AliTRDtrack::GetNumberOfClusters()\n");
  95          //                                                               return AliKalmanTrack::GetNumberOfClusters();   }
  96  inline virtual Int_t    GetNumberOfTracklets() const;
  97  virtual Int_t           GetTrackletIndex(Int_t plane) const          { return plane>=0 && plane<6
  98                                                                              ? fTrackletIndex[plane] : -1;   }
  99
 100
 101          void            SetdEdx(Double_t dedx)                       { fdEdx                      = dedx;   }
 102          void            SetStop(Bool_t stop)                         { fStopped                   = stop;   }
 103          void            SetPIDsignals(Float_t dedx
 104                                      , Int_t iPlane
 105                                      , Int_t iSlice)                  { fdEdxPlane[iPlane][iSlice] = dedx;   }
 106          void            SetPIDTimBin(Int_t timbin, Int_t i)          { fTimBinPlane[i]            = timbin; }
 107          void            SetLikelihoodElectron(Float_t l)             { fLhElectron                = l;      }
 108          void            SetSampledEdx(Float_t q, Int_t i);
 109          void            SetSampledEdx(Float_t q);
 110          void            SetSeedLabel(Int_t lab)                      { fSeedLab                   = lab;    }
 111          void            SetNWrong(Int_t nwrong)                      { fNWrong                    = nwrong; }
 112          void            SetNCross(Int_t ncross)                      { fNCross                    = ncross; }
 113          void            SetNExpected(Int_t nexp)                     { fNExpected                 = nexp;   }
 114          void            SetNLast(Int_t nlast)                        { fNLast                     = nlast;  }
 115          void            SetNExpectedLast(Int_t nexp)                 { fNExpectedLast             = nexp;   }
 116          void            SetChi2Last(Float_t chi2)                    { fChi2Last                  = chi2;   }
 117          void            SetTracklets(Int_t i, AliTRDtracklet t)      { fTracklets[i]              = t;      }
 118          void            SetBudget(Int_t i, Float_t budget)           { fBudget[i]                 = budget; }
 119          void            SetPIDMethod(AliTRDPIDMethod method)         { fPIDmethod                 = method; }
 120
 121          void            SetTrackSegmentDirMom(const Int_t plane);
 122          void            CookdEdx(Double_t low = 0.05, Double_t up = 0.7);
 123          void            CookdEdxTimBin(const Int_t tid);
 124          Bool_t          CookPID(Int_t &pidQuality);
 125          void            SetCluster(AliTRDcluster* cl
 126                                   , Int_t index = -1)                 { fClusters[(index == -1)
 127                                                                                   ? GetNumberOfClusters()-1
 128                                                                                   : index]         = cl;     }
 129          AliTRDcluster*  GetCluster(Int_t layer) const                { return (layer >= 0 &&
 130                                                                                 layer <  GetNumberOfClusters())
 131                                                                              ? fClusters[layer]
 132                                                                              : 0x0;                          }
 133          Float_t         GetMomentumPlane(Int_t plane) const          { return (plane >= 0 &&
 134                                                                                 plane <  kNplane)
 135                                                                              ? fMom[plane]
 136                                                                              : 0.0;                          }
 137    const Double_t*       GetPID() const                               { return fPID;                         }
 138          Float_t         GetSnpPlane(Int_t plane) const               { return (plane >= 0 &&
 139                                                                                 plane <  kNplane)
 140                                                                              ? fSnp[plane]
 141                                                                              : 0.0;                          }
 142          Float_t         GetTglPlane(Int_t plane) const               { return (plane >= 0 &&
 143                                                                                 plane <  kNplane)
 144                                                                              ? fTgl[plane]
 145                                                                              : 0.0;                          }
 146          Float_t         GetTrackLengthPlane(Int_t plane) const;
 147
 148          void            MakeBackupTrack();
 149          Bool_t          PropagateTo(Double_t xr, Double_t x0 = 8.72, Double_t rho = 5.86e-3);
 150          Int_t           PropagateToR(Double_t xr, Double_t step);
 151          Int_t           PropagateToX(Double_t xr, Double_t step);
 152          Bool_t          Rotate(Double_t angle, Bool_t absolute = kFALSE);
 153          Float_t         StatusForTOF();
 154          Bool_t          Update(const AliTRDcluster *c, Double_t chi2, Int_t index, Double_t h01);
 155          Bool_t          Update(const AliTRDtracklet &tracklet, Double_t chi2, Int_t index);
 156          Int_t           UpdateMI(/*const */AliTRDcluster *c, Double_t chi2
 157                                 , Int_t index, Double_t h01
 158                                 , Int_t plane, Int_t tid = 0);
 159
 160  protected:
 161
 162   AliTRDtrack           &operator=(const AliTRDtrack &t);
 163
 164          void            CookdEdxNN(Float_t *dedx);
 165          Double_t        GetBz() const;
 166          Bool_t          Update(const AliCluster */*c*/, Double_t /*chi2*/, Int_t /*idx*/) { return 0;   }
 167          Double_t        GetPredictedChi2(const AliCluster* /*c*/) const                   { return 0.0; }
 168
 169  protected:
 170
 171          Int_t    fSeedLab;                           //  Track label taken from seeding
 172          Float_t  fdEdx;                              //  dE/dx (truncated mean)
 173          Float_t  fDE;                                //  Integrated delta energy
 174          Float_t  fdEdxPlane[kNplane][kNslice];       //  dE/dx from all 6 planes in 3 slices each
 175          Int_t    fTimBinPlane[kNplane];              //  Time bin of Max cluster from all 6 planes
 176          UChar_t  fPIDquality;                        //  No of planes used for PID calculation
 177          Double_t fPID[AliPID::kSPECIES];             //  PID probabilities
 178          Float_t  fMom[kNplane];                      //  Track momentum at chamber entrance
 179          Float_t  fSnp[kNplane];                      //  Track direction
 180          Float_t  fTgl[kNplane];                      //  Track direction
 181   AliTRDcluster  *fClusters[kMAXCLUSTERSPERTRACK];    //  List of assigned clusters
 182          Bool_t   fClusterOwner;                      //  Indicates the track is owner of cluster
 183   AliTRDPIDMethod fPIDmethod;                         //  Switch between different PID methods
 184          Bool_t   fStopped;                           //  Track stop indication
 185          Int_t    fIndex[kMAXCLUSTERSPERTRACK];       //  Global indexes of clusters
 186          Int_t    fIndexBackup[kMAXCLUSTERSPERTRACK]; //  Backup indexes of clusters - used in iterations
 187          Float_t  fdQdl[kMAXCLUSTERSPERTRACK];        //  Cluster amplitudes corrected for track angles
 188
 189          Float_t  fLhElectron;                        //  Likelihood to be an electron
 190          Int_t    fNWrong;                            //  Number of wrong clusters
 191          Int_t    fNRotate;                           //  Number of rotation
 192          Int_t    fNCross;                            //  Number of the cross materials
 193          Int_t    fNExpected;                         //  Expected number of cluster
 194          Int_t    fNLast;                             //  Number of clusters in last 2 layers
 195          Int_t    fNExpectedLast;                     //  Number of expected clusters on last 2 layers
 196          Int_t    fNdedx;                             //  Number of clusters for dEdx measurment
 197          Float_t  fChi2Last;                          //  Chi2 in the  last 2 layers
 198   AliTRDtracklet  fTracklets[6];                      //  Tracklets
 199          Float_t  fBudget[3];                         //  Integrated material budget
 200   AliTRDtrack    *fBackupTrack;                       //! Backup track
 201
 202          Int_t    fTrackletIndex[6];                  //  Tracklets index in the tracker list
 203   AliTRDseedV1    fTracklet[6];                       //  Tracklets array defining the track
 204
 205   ClassDef(AliTRDtrack,9)                             //  TRD reconstructed tracks
 206
 207 };
 208
 209 //___________________________________________________________
 210 inline Int_t AliTRDtrack::GetNumberOfTracklets() const
 211 {
 212         Int_t ntrklt = 0;
 213         for(int ip=0; ip<6; ip++) if(fTrackletIndex[ip] >= 0) ntrklt++;
 214         return ntrklt;
 215 }
 216
 217
 218 #endif