#ifndef ALIITSVERTEXER3D_H #define ALIITSVERTEXER3D_H #include /////////////////////////////////////////////////////////////////// // // // Class for primary vertex finding (3D reconstruction) // // // /////////////////////////////////////////////////////////////////// /* $Id$ */ #include #include #include #include class AliITSVertexer3D : public AliITSVertexer { public: AliITSVertexer3D(); virtual ~AliITSVertexer3D(); virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree); void FindVertex3DIterative(); void FindVertex3D(TTree *itsClusterTree); AliESDVertex GetVertex3D() const {return fVert3D;} virtual void PrintStatus() const; static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist); void SetWideFiducialRegion(Float_t dz = 40.0, Float_t dr=2.5){ SetCoarseMaxRCut(dr); SetZCutDiamond(dz); } void SetNarrowFiducialRegion(Float_t dz = 0.5, Float_t dr=0.5){ SetMaxRCut(dr); SetMaxZCut(dz); } void SetDeltaPhiCuts(Float_t dphiloose=0.5, Float_t dphitight=0.025){ SetCoarseDiffPhiCut(dphiloose); SetDiffPhiMax(dphitight); } void SetCoarseDiffPhiCut(Float_t dphi = 0.5){fCoarseDiffPhiCut=dphi;} void SetFineDiffPhiCut(Float_t dphi = 0.05){fFineDiffPhiCut=dphi;} void SetCutOnPairs(Float_t cp = 0.1){fCutOnPairs = cp;} void SetCoarseMaxRCut(Float_t rad = 2.5){fCoarseMaxRCut=rad;} void SetMaxRCut(Float_t rad = 0.5){fMaxRCut=rad;} void SetZCutDiamond(Float_t zcut = 20.0){fZCutDiamond=zcut;} void SetMaxZCut(Float_t dz = 0.5){fMaxZCut=dz;} void SetDCACut(Float_t dca=0.1){fDCAcut=dca;} void SetDiffPhiMax(Float_t pm = 0.025){fDiffPhiMax = pm;} void SetMeanPSelTracks(Float_t pGeV=0.875){fMeanPSelTrk = pGeV;} void SetMeanPtSelTracks(Float_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;} void SetMeanPPtSelTracks(Double_t fieldTesla); void SetMinDCAforPileup(Float_t mindist=0.1) {fDCAforPileup=mindist;} void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;} void SetBinSizeR(Float_t siz=0.1){fBinSizeR=siz;} void SetBinSizeZ(Float_t siz=0.8){fBinSizeZ=siz;} protected: AliITSVertexer3D(const AliITSVertexer3D& vtxr); AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */); Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts); Int_t Prepare3DVertex(Int_t optCuts); void ResetVert3D(); void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes); void PileupFromZ(); void MarkUsedClusters(); Int_t RemoveTracklets(); void FindOther3DVertices(TTree *itsClusterTree); enum {kMaxCluPerMod=250}; TClonesArray fLines; //! array of tracklets AliESDVertex fVert3D; // 3D Vertex Float_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching Float_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method) Float_t fCutOnPairs; //cut on distance between pairs of tracklets Float_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis Float_t fMaxRCut; // cut on tracklet DCA to beam axis Float_t fZCutDiamond; // cut on +-Z of the diamond Float_t fMaxZCut; // cut on Z distance from estimated vertex Float_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA Float_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels Float_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad Float_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad TBits fUsedCluster; // flag for used clusters in vertex calculation TH1F *fZHisto; //! histogram with coarse z distribution Float_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets Float_t fBinSizeR; // Histo3D bin size along radius Float_t fBinSizeZ; // Histo3D bin size along z UShort_t fPileupAlgo; // Algo for pileup identification // 0->VertexerZ pileup algo // 1->Unused RecPoints algo ClassDef(AliITSVertexer3D,9); }; #endif