#ifndef ALIITSVERTEXER3D_H #define ALIITSVERTEXER3D_H #include /////////////////////////////////////////////////////////////////// // // // Class for primary vertex finding (3D reconstruction) // // // /////////////////////////////////////////////////////////////////// /* $Id$ */ #include #include #include #include #include class AliITSVertexer3D : public AliITSVertexer { public: AliITSVertexer3D(Double_t zcut=0.); AliITSVertexer3D(TRootIOCtor* ); virtual ~AliITSVertexer3D(); virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree); void FindVertex3DIterative(); void FindVertex3DIterativeMM(); void FindVertex3D(TTree *itsClusterTree); AliESDVertex GetVertex3D() const {return fVert3D;} // Double_t *Get3DPeak() {return f3DPeak;} virtual void PrintStatus() const; static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist); void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){ SetCoarseMaxRCut(dr); SetZCutDiamond(dz); } void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){ SetMaxRCut(dr); SetMaxZCut(dz); } void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){ SetCoarseDiffPhiCut(dphiloose); SetDiffPhiMax(dphitight); } void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;} void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;} void SetCutOnPairs(Double_t cp = 0.15){fCutOnPairs = cp;} void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;} void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;} void SetMaxRCutAlgo2(Double_t rad = 0.2){fMaxRCut2=rad;} void SetZCutDiamond(Double_t zcut = 40.0); void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;} void SetDCACut(Double_t dca=0.1){fDCAcut=dca;} void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;} void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;} void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;} void SetMeanPPtSelTracks(Double_t fieldTesla); void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;} void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;} void SetPileupAlgo(UShort_t optalgo=1){fPileupAlgo=optalgo;} void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;} void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;} void SetHighMultAlgo(UChar_t n){ if(n<2) fHighMultAlgo=n; else AliError("Only algos 0 and 1 implemented"); } void SetHighMultDownscalingAlgo(){fHighMultAlgo=0;} void SetHighMultTracesAlgo(){fHighMultAlgo=1;} void SetMaxNumOfClustersForHighMult(Int_t ncl){fMaxNumOfCl=ncl;} void SetMaxNumOfClustersForDownScale(Int_t ncl){fMaxNumOfClForDownScale=ncl;} void SetMaxNumOfClustersForRebin(Int_t ncl){fMaxNumOfClForRebin=ncl;} Int_t GetMaxNumOfClustersForHighMult() const {return fMaxNumOfCl;} Int_t GetMaxNumOfClustersForDownScale() const {return fMaxNumOfClForDownScale;} Int_t GetMaxNumOfClustersForRebin() const {return fMaxNumOfClForRebin;} protected: AliITSVertexer3D(const AliITSVertexer3D& vtxr); AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */); Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts); Int_t Prepare3DVertex(Int_t optCuts); Int_t Prepare3DVertexPbPb(); 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); Double_t GetFraction(Int_t itr) const; enum {kMaxCluPerMod=250}; enum {kMaxPileupVertices=10}; TClonesArray fLines; //! array of tracklets AliESDVertex fVert3D; // 3D Vertex Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method) Double_t fCutOnPairs; //cut on distance between pairs of tracklets Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis Double_t fMaxRCut; // cut on tracklet DCA to beam axis Double_t fMaxRCut2; // cut on tracklet DCA to beam axis - algo2 Double_t fZCutDiamond; // cut on +-Z of the diamond Double_t fMaxZCut; // cut on Z distance from estimated vertex Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA Double_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad Double_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 Double_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets Double_t fDiffPhiforPileup; // Cut on delta phi for pileup Double_t fBinSizeR; // Histo3D bin size along radius Double_t fBinSizeZ; // Histo3D bin size along z UShort_t fPileupAlgo; // Algo for pileup identification // 0->VertexerZ pileup algo // 1->Unused RecPoints algo Int_t fMaxNumOfCl; // max n. of clusters on L1 or L2 for high mult definition Int_t fMaxNumOfClForRebin; // max n. of clusters on L1 or L2 for rebin Int_t fMaxNumOfClForDownScale; // max n. of clusters on L1 or L2 for downscale Int_t fNRecPLay1; // number of rec ponts on SPD layer 1 Int_t fNRecPLay2; // number of rec ponts on SPD layer 2 Float_t f3DBinSize; // Size of the 3D bins Bool_t fDoDownScale; // Control downscaling of tracklets in high mult TRandom3 *fGenerForDownScale; // randomnumber generator fordownscaling Double_t f3DPeak[3]; // TH3F peak coords UChar_t fHighMultAlgo; // algorithm used for high mult. events Bool_t fSwitchAlgorithm; // Switch between two algoritms in testing phase static const Int_t fgkMaxNumOfClDefault; // Default max n. of clusters for downscale static const Int_t fgkMaxNumOfClRebinDefault; // Default max n. of clusters for rebin static const Int_t fgkMaxNumOfClDownscaleDefault; // Default max n. of clusters for rebin static const Float_t fgk3DBinSizeDefault; // Default 3D bins size ClassDef(AliITSVertexer3D,15); }; #endif