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 void FindVertex3DIterative();
27 void FindVertex3D(TTree *itsClusterTree);
28 AliESDVertex GetVertex3D() const {return fVert3D;}
29 virtual void PrintStatus() const;
30 static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
31 void SetWideFiducialRegion(Float_t dz = 40.0, Float_t dr=2.5){
35 void SetNarrowFiducialRegion(Float_t dz = 0.5, Float_t dr=0.5){
39 void SetDeltaPhiCuts(Float_t dphiloose=0.5, Float_t dphitight=0.025){
40 SetCoarseDiffPhiCut(dphiloose);
41 SetDiffPhiMax(dphitight);
43 void SetCoarseDiffPhiCut(Float_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
44 void SetFineDiffPhiCut(Float_t dphi = 0.05){fFineDiffPhiCut=dphi;}
45 void SetCutOnPairs(Float_t cp = 0.1){fCutOnPairs = cp;}
46 void SetCoarseMaxRCut(Float_t rad = 2.5){fCoarseMaxRCut=rad;}
47 void SetMaxRCut(Float_t rad = 0.5){fMaxRCut=rad;}
48 void SetZCutDiamond(Float_t zcut = 20.0){fZCutDiamond=zcut;}
49 void SetMaxZCut(Float_t dz = 0.5){fMaxZCut=dz;}
50 void SetDCACut(Float_t dca=0.1){fDCAcut=dca;}
51 void SetDiffPhiMax(Float_t pm = 0.025){fDiffPhiMax = pm;}
52 void SetMeanPSelTracks(Float_t pGeV=0.875){fMeanPSelTrk = pGeV;}
53 void SetMeanPtSelTracks(Float_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
54 void SetMeanPPtSelTracks(Float_t fieldTesla);
55 void SetMinDCAforPileup(Float_t mindist=0.1) {fDCAforPileup=mindist;}
56 void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
57 void SetBinSizeR(Float_t siz=0.1){fBinSizeR=siz;}
58 void SetBinSizeZ(Float_t siz=0.8){fBinSizeZ=siz;}
61 AliITSVertexer3D(const AliITSVertexer3D& vtxr);
62 AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
63 Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
64 Int_t Prepare3DVertex(Int_t optCuts);
66 void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
68 void MarkUsedClusters();
69 Int_t RemoveTracklets();
70 void FindOther3DVertices(TTree *itsClusterTree);
72 enum {kMaxCluPerMod=250};
74 TClonesArray fLines; //! array of tracklets
75 AliESDVertex fVert3D; // 3D Vertex
76 Float_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
77 Float_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method)
78 Float_t fCutOnPairs; //cut on distance between pairs of tracklets
79 Float_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
80 Float_t fMaxRCut; // cut on tracklet DCA to beam axis
81 Float_t fZCutDiamond; // cut on +-Z of the diamond
82 Float_t fMaxZCut; // cut on Z distance from estimated vertex
83 Float_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
84 Float_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
85 Float_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
86 Float_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
87 TBits fUsedCluster; // flag for used clusters in vertex calculation
88 TH1F *fZHisto; //! histogram with coarse z distribution
89 Float_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
90 Float_t fBinSizeR; // Histo3D bin size along radius
91 Float_t fBinSizeZ; // Histo3D bin size along z
92 UShort_t fPileupAlgo; // Algo for pileup identification
93 // 0->VertexerZ pileup algo
94 // 1->Unused RecPoints algo
96 ClassDef(AliITSVertexer3D,9);