1 #ifndef ALIITSVERTEXER3D_H
2 #define ALIITSVERTEXER3D_H
4 #include<AliITSVertexer.h>
6 ///////////////////////////////////////////////////////////////////
8 // Class for primary vertex finding (3D reconstruction) //
10 ///////////////////////////////////////////////////////////////////
14 #include <TClonesArray.h>
15 #include <AliESDVertex.h>
19 class AliITSVertexer3D : public AliITSVertexer {
24 virtual ~AliITSVertexer3D();
25 virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
26 AliESDVertex GetVertex3D() const {return fVert3D;}
27 virtual void PrintStatus() const;
28 void SetWideFiducialRegion(Float_t dz = 20.0, Float_t dr=2.5){
32 void SetNarrowFiducialRegion(Float_t dz = 0.5, Float_t dr=0.5){
36 void SetDeltaPhiCuts(Float_t dphiloose=0.5, Float_t dphitight=0.01){
37 SetCoarseDiffPhiCut(dphiloose);
38 SetDiffPhiMax(dphitight);
40 void SetCoarseDiffPhiCut(Float_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
41 void SetCoarseMaxRCut(Float_t rad = 2.5){fCoarseMaxRCut=rad;}
42 void SetMaxRCut(Float_t rad = 0.5){fMaxRCut=rad;}
43 void SetZCutDiamond(Float_t zcut = 20.0){fZCutDiamond=zcut;}
44 void SetMaxZCut(Float_t dz = 0.5){fMaxZCut=dz;}
45 void SetDCACut(Float_t dca=0.1){fDCAcut=dca;}
46 void SetDiffPhiMax(Float_t pm = 0.01){fDiffPhiMax = pm;}
47 void SetMeanPSelTracks(Float_t pGeV=0.875){fMeanPSelTrk = pGeV;}
48 void SetMeanPtSelTracks(Float_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
49 void SetMeanPPtSelTracks(Float_t fieldTesla);
50 void SetMinDCAforPileup(Float_t mindist=0.1) {fDCAforPileup=mindist;}
51 void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
54 AliITSVertexer3D(const AliITSVertexer3D& vtxr);
55 AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
56 Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
57 Int_t Prepare3DVertex(Int_t optCuts);
59 void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
61 void MarkUsedClusters();
62 Int_t RemoveTracklets();
63 void FindOther3DVertices(TTree *itsClusterTree);
65 enum {kMaxCluPerMod=250};
67 TClonesArray fLines; //! array of tracklets
68 AliESDVertex fVert3D; // 3D Vertex
69 Float_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
70 Float_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
71 Float_t fMaxRCut; // cut on tracklet DCA to beam axis
72 Float_t fZCutDiamond; // cut on +-Z of the diamond
73 Float_t fMaxZCut; // cut on Z distance from estimated vertex
74 Float_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
75 Float_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
76 Float_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
77 Float_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
78 TBits fUsedCluster; // flag for used clusters in vertex calculation
79 TH1F *fZHisto; //! histogram with coarse z distribution
80 Float_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
81 UShort_t fPileupAlgo; // Algo for pileup identification
82 // 0->VertexerZ pileup algo
83 // 1->Unused RecPoints algo
85 ClassDef(AliITSVertexer3D,7);