#ifndef ALITRDTRACK_H #define ALITRDTRACK_H /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * See cxx source for full Copyright notice */ #include #include class AliTRDcluster; class AliTPCtrack; class AliESDtrack; class AliTrackReference; const unsigned kMAXCLUSTERSPERTRACK = 210; /////////////////////////////////////////////////////////////////////////////// // // // Represents a reconstructed TRD track // // // /////////////////////////////////////////////////////////////////////////////// class AliTRDtrack : public AliKalmanTrack { enum { kNdet = 540 , kNstacks = 90 , kNplane = 6 , kNcham = 5 , kNsect = 18 , kNslice = 3 , kNtimeBins = 22 }; friend class AliTRDtracker; public: AliTRDtrack(); AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5], const Double_t cc[15], Double_t xr, Double_t alpha); AliTRDtrack(const AliTRDtrack& t); AliTRDtrack(const AliKalmanTrack& t, Double_t alpha); AliTRDtrack(const AliESDtrack& t); ~AliTRDtrack(); AliTRDtrack &operator=(const AliTRDtrack &t); //static AliTRDtrack* MakeTrack(const AliTrackReference *ref, Double_t mass); Int_t Compare(const TObject *o) const; void CookdEdx(Double_t low=0.05, Double_t up=0.7); Float_t StatusForTOF(); Double_t GetAlpha() const { return fAlpha; } Int_t GetSector() const; Double_t GetC() const { return fC; } Int_t GetClusterIndex(Int_t i) const { return fIndex[i]; } Float_t GetClusterdQdl(Int_t i) const { return fdQdl[i]; } void GetCovariance(Double_t cov[15]) const; Double_t GetdEdx() const { return fdEdx; } Double_t GetPIDsignal() const { return GetdEdx(); } Float_t GetPIDsignals(Int_t iPlane, Int_t iSlice) const { return fdEdxPlane[iPlane][iSlice]; } Int_t GetPIDTimBin(Int_t i) const { return fTimBinPlane[i];} Double_t GetEta() const { return fE; } void GetExternalCovariance(Double_t cov[15]) const; void GetExternalParameters(Double_t& xr, Double_t x[5]) const; Double_t GetLikelihoodElectron() const { return fLhElectron; } Double_t Get1Pt() const; Double_t GetP() const; Double_t GetPredictedChi2(const AliTRDcluster* c, Double_t h01) const; Double_t GetPt() const { return 1.0 / Get1Pt(); } void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; void GetGlobalXYZ(Double_t &x, Double_t &y, Double_t &z) const; Int_t GetSeedLabel() const { return fSeedLab; } Double_t GetSigmaC2() const { return fCcc; } Double_t GetSigmaTgl2() const { return fCtt; } Double_t GetSigmaY2() const { return fCyy; } Double_t GetSigmaZ2() const { return fCzz; } Double_t GetSnp() const { return fX*fC - fE; } Double_t GetTgl() const { return fT; } Double_t GetX() const { return fX; } Double_t GetY() const { return fY; } Double_t GetZ() const { return fZ; } Int_t* GetBackupIndexes() { return fIndexBackup; } Int_t* GetIndexes() { return fIndex; } Double_t GetYat(Double_t xk) const; Int_t GetProlongation(Double_t xk, Double_t &y, Double_t &z); void SetStop(Bool_t stop) { fStopped = stop; } Bool_t GetStop() const { return fStopped; } Int_t PropagateTo(Double_t xr, Double_t x0=8.72, Double_t rho=5.86e-3); Int_t PropagateToX(Double_t xr, Double_t step); Int_t PropagateToR(Double_t xr, Double_t step); void ResetCovariance(); void ResetCovariance(Float_t mult); void ResetClusters() { SetChi2(0.); SetNumberOfClusters(0); } Int_t Rotate(Double_t angle, Bool_t absolute=kFALSE); void SetdEdx(Float_t dedx) { fdEdx = dedx; } void SetPIDsignals(Float_t dedx, Int_t iPlane, Int_t iSlice) { fdEdxPlane[iPlane][iSlice] = dedx; } void SetPIDTimBin(Int_t timbin, Int_t i) { fTimBinPlane[i] = timbin; } void SetLikelihoodElectron(Float_t l) { fLhElectron = l; } void SetSampledEdx(Float_t q, Int_t i); void SetSampledEdx(Float_t q); void SetSeedLabel(Int_t lab) { fSeedLab = lab; } Int_t Update(const AliTRDcluster* c, Double_t chi2, UInt_t i, Double_t h01); Int_t UpdateMI(const AliTRDcluster* c, Double_t chi2, UInt_t i, Double_t h01, Int_t plane); Int_t UpdateMI(const AliTRDtracklet & tracklet); void AddNWrong() { fNWrong++; } Int_t GetNWrong() const { return fNWrong; } Int_t GetNRotate() const { return fNRotate; } Int_t GetNCross() const { return fNCross; } void IncCross() { fNCross++; if (fBackupTrack) fBackupTrack->IncCross(); } AliTRDtrack* GetBackupTrack() { return fBackupTrack; } void MakeBackupTrack(); protected: inline void GetXYZ(Float_t r[3]) const; Double_t GetPredictedChi2(const AliCluster*/*c*/) const { return 0.0; } Int_t Update(const AliCluster*/*c*/, Double_t /*chi2*/, UInt_t /*i*/) { return 0; } Int_t fSeedLab; // track label taken from seeding Float_t fdEdx; // dE/dx Float_t fdEdxT; // dE/dx - truncated mean Float_t fDE; // integrated delta energy Float_t fdEdxPlane[kNplane][kNslice]; // dE/dx from all 6 planes in 3 slices each Int_t fTimBinPlane[kNplane]; // time bin of Max cluster from all 6 planes Double_t fAlpha; // rotation angle Double_t fX; // running local X-coordinate of the track (time bin) Bool_t fStopped; // track stop indication Double_t fY; // Y-coordinate of the track Double_t fZ; // Z-coordinate of the track Double_t fE; // C*x0 Double_t fT; // tangent of the track momentum dip angle Double_t fC; // track curvature Double_t fCyy; // covariance Double_t fCzy, fCzz; // matrix Double_t fCey, fCez, fCee; // of the Double_t fCty, fCtz, fCte, fCtt; // track Double_t fCcy, fCcz, fCce, fCct, fCcc; // parameters Int_t fIndex[kMAXCLUSTERSPERTRACK]; // global indexes of clusters Int_t fIndexBackup[kMAXCLUSTERSPERTRACK]; // backup indexes of clusters - used in iterations Float_t fdQdl[kMAXCLUSTERSPERTRACK]; // cluster amplitudes corrected for track angles Float_t fLhElectron; // Likelihood to be an electron Int_t fNWrong; // number of wrong clusters Int_t fNRotate; // number of rotation Int_t fNCross; // number of the cross materials Int_t fNExpected; // expected number of cluster Int_t fNLast; // number of clusters in last 2 layers Int_t fNExpectedLast; // number of expected clusters on last 2 layers Int_t fNdedx; // number of clusters for dEdx measurment Float_t fChi2Last; // chi2 in the last 2 layers AliTRDtracklet fTracklets[6]; // tracklets Float_t fBudget[3]; // integrated material budget AliTRDtrack *fBackupTrack; //! backup track ClassDef(AliTRDtrack,5) // TRD reconstructed tracks }; inline void AliTRDtrack::GetExternalParameters(Double_t& xr, Double_t x[5]) const { // // This function returns external TRD track representation // xr = fX; x[0] = GetY(); x[1] = GetZ(); x[2] = GetSnp(); x[3] = GetTgl(); x[4] = (TMath::Sign(1e-9,fC) + fC)*GetLocalConvConst(); } #endif