Fixed a bug in the Digit reader, moved clusterfinder to initialize from OCDB, Added...
[u/mrichter/AliRoot.git] / ITS / AliITSVertexer3D.h
CommitLineData
70c95f95 1#ifndef ALIITSVERTEXER3D_H
2#define ALIITSVERTEXER3D_H
3
27167524 4#include<AliITSVertexer.h>
70c95f95 5
6///////////////////////////////////////////////////////////////////
7// //
8// Class for primary vertex finding (3D reconstruction) //
9// //
10///////////////////////////////////////////////////////////////////
11
6a0d56b8 12/* $Id$ */
13
f5f6da22 14#include <TClonesArray.h>
6a0d56b8 15#include <AliESDVertex.h>
7340864d 16#include <TH3F.h>
cd1c2af1 17#include <TBits.h>
70c95f95 18
19class AliITSVertexer3D : public AliITSVertexer {
20
21 public:
22
23 AliITSVertexer3D();
70c95f95 24 virtual ~AliITSVertexer3D();
308c2f7c 25 virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
6b4d9537 26 void FindVertex3DIterative();
87104b06 27 void FindVertex3DIterativeMM();
6b4d9537 28 void FindVertex3D(TTree *itsClusterTree);
6a0d56b8 29 AliESDVertex GetVertex3D() const {return fVert3D;}
70c95f95 30 virtual void PrintStatus() const;
6b4d9537 31 static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
242c8025 32 void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){
7203e11a 33 SetCoarseMaxRCut(dr);
34 SetZCutDiamond(dz);
35 }
242c8025 36 void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
7203e11a 37 SetMaxRCut(dr);
38 SetMaxZCut(dz);
39 }
242c8025 40 void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
7203e11a 41 SetCoarseDiffPhiCut(dphiloose);
42 SetDiffPhiMax(dphitight);
43 }
242c8025 44 void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
45 void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;}
87104b06 46 void SetCutOnPairs(Double_t cp = 0.15){fCutOnPairs = cp;}
242c8025 47 void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;}
48 void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;}
87104b06 49 void SetMaxRCutAlgo2(Double_t rad = 0.2){fMaxRCut2=rad;}
242c8025 50 void SetZCutDiamond(Double_t zcut = 20.0){fZCutDiamond=zcut;}
51 void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;}
52 void SetDCACut(Double_t dca=0.1){fDCAcut=dca;}
53 void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;}
54 void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;}
55 void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
0496a544 56 void SetMeanPPtSelTracks(Double_t fieldTesla);
242c8025 57 void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
c238ba33 58 void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
87104b06 59 void SetPileupAlgo(UShort_t optalgo=1){fPileupAlgo=optalgo;}
242c8025 60 void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
61 void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}
70c95f95 62
63protected:
64 AliITSVertexer3D(const AliITSVertexer3D& vtxr);
65 AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
308c2f7c 66 Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
05d1294c 67 Int_t Prepare3DVertex(Int_t optCuts);
27167524 68 void ResetVert3D();
7340864d 69 void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
cd1c2af1 70 void PileupFromZ();
71 void MarkUsedClusters();
72 Int_t RemoveTracklets();
73 void FindOther3DVertices(TTree *itsClusterTree);
70c95f95 74
cd1c2af1 75 enum {kMaxCluPerMod=250};
6a0d56b8 76
f5f6da22 77 TClonesArray fLines; //! array of tracklets
6a0d56b8 78 AliESDVertex fVert3D; // 3D Vertex
242c8025 79 Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
80 Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method)
81 Double_t fCutOnPairs; //cut on distance between pairs of tracklets
82 Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
87104b06 83 Double_t fMaxRCut; // cut on tracklet DCA to beam axis
84 Double_t fMaxRCut2; // cut on tracklet DCA to beam axis - algo2
242c8025 85 Double_t fZCutDiamond; // cut on +-Z of the diamond
86 Double_t fMaxZCut; // cut on Z distance from estimated vertex
87 Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
88 Double_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
89 Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
90 Double_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
cd1c2af1 91 TBits fUsedCluster; // flag for used clusters in vertex calculation
92 TH1F *fZHisto; //! histogram with coarse z distribution
242c8025 93 Double_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
c238ba33 94 Double_t fDiffPhiforPileup; // Cut on delta phi for pileup
242c8025 95 Double_t fBinSizeR; // Histo3D bin size along radius
96 Double_t fBinSizeZ; // Histo3D bin size along z
cd1c2af1 97 UShort_t fPileupAlgo; // Algo for pileup identification
98 // 0->VertexerZ pileup algo
99 // 1->Unused RecPoints algo
6a0d56b8 100
87104b06 101 ClassDef(AliITSVertexer3D,12);
70c95f95 102
103};
104
105#endif