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(Double_t dz = 40.0, Double_t dr=2.5){
35 void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
39 void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
40 SetCoarseDiffPhiCut(dphiloose);
41 SetDiffPhiMax(dphitight);
43 void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
44 void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;}
45 void SetCutOnPairs(Double_t cp = 0.1){fCutOnPairs = cp;}
46 void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;}
47 void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;}
48 void SetZCutDiamond(Double_t zcut = 20.0){fZCutDiamond=zcut;}
49 void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;}
50 void SetDCACut(Double_t dca=0.1){fDCAcut=dca;}
51 void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;}
52 void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;}
53 void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
54 void SetMeanPPtSelTracks(Double_t fieldTesla);
55 void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
56 void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
57 void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
58 void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
59 void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}
62 AliITSVertexer3D(const AliITSVertexer3D& vtxr);
63 AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
64 Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
65 Int_t Prepare3DVertex(Int_t optCuts);
67 void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
69 void MarkUsedClusters();
70 Int_t RemoveTracklets();
71 void FindOther3DVertices(TTree *itsClusterTree);
73 enum {kMaxCluPerMod=250};
75 TClonesArray fLines; //! array of tracklets
76 AliESDVertex fVert3D; // 3D Vertex
77 Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
78 Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method)
79 Double_t fCutOnPairs; //cut on distance between pairs of tracklets
80 Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
81 Double_t fMaxRCut; // cut on tracklet DCA to beam axis
82 Double_t fZCutDiamond; // cut on +-Z of the diamond
83 Double_t fMaxZCut; // cut on Z distance from estimated vertex
84 Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
85 Double_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
86 Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
87 Double_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
88 TBits fUsedCluster; // flag for used clusters in vertex calculation
89 TH1F *fZHisto; //! histogram with coarse z distribution
90 Double_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
91 Double_t fDiffPhiforPileup; // Cut on delta phi for pileup
92 Double_t fBinSizeR; // Histo3D bin size along radius
93 Double_t fBinSizeZ; // Histo3D bin size along z
94 UShort_t fPileupAlgo; // Algo for pileup identification
95 // 0->VertexerZ pileup algo
96 // 1->Unused RecPoints algo
98 ClassDef(AliITSVertexer3D,11);