Adding some further mother volumes to speed-up the overlap checking and particle...
[u/mrichter/AliRoot.git] / ITS / AliITSVertexer3D.h
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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();
27 void FindVertex3D(TTree *itsClusterTree);
6a0d56b8 28 AliESDVertex GetVertex3D() const {return fVert3D;}
70c95f95 29 virtual void PrintStatus() const;
6b4d9537 30 static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
d8ba9ddf 31 void SetWideFiducialRegion(Float_t dz = 20.0, Float_t dr=2.5){
7203e11a 32 SetCoarseMaxRCut(dr);
33 SetZCutDiamond(dz);
34 }
35 void SetNarrowFiducialRegion(Float_t dz = 0.5, Float_t dr=0.5){
36 SetMaxRCut(dr);
37 SetMaxZCut(dz);
38 }
2ecf7a6f 39 void SetDeltaPhiCuts(Float_t dphiloose=0.5, Float_t dphitight=0.025){
7203e11a 40 SetCoarseDiffPhiCut(dphiloose);
41 SetDiffPhiMax(dphitight);
42 }
70c95f95 43 void SetCoarseDiffPhiCut(Float_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
6b4d9537 44 void SetFineDiffPhiCut(Float_t dphi = 0.05){fFineDiffPhiCut=dphi;}
45 void SetCutOnPairs(Float_t cp = 0.1){fCutOnPairs = cp;}
05d1294c 46 void SetCoarseMaxRCut(Float_t rad = 2.5){fCoarseMaxRCut=rad;}
47 void SetMaxRCut(Float_t rad = 0.5){fMaxRCut=rad;}
d8ba9ddf 48 void SetZCutDiamond(Float_t zcut = 20.0){fZCutDiamond=zcut;}
05d1294c 49 void SetMaxZCut(Float_t dz = 0.5){fMaxZCut=dz;}
7203e11a 50 void SetDCACut(Float_t dca=0.1){fDCAcut=dca;}
2ecf7a6f 51 void SetDiffPhiMax(Float_t pm = 0.025){fDiffPhiMax = pm;}
6a0d56b8 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);
cd1c2af1 55 void SetMinDCAforPileup(Float_t mindist=0.1) {fDCAforPileup=mindist;}
56 void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
70c95f95 57
58protected:
59 AliITSVertexer3D(const AliITSVertexer3D& vtxr);
60 AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
308c2f7c 61 Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
05d1294c 62 Int_t Prepare3DVertex(Int_t optCuts);
27167524 63 void ResetVert3D();
7340864d 64 void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
cd1c2af1 65 void PileupFromZ();
66 void MarkUsedClusters();
67 Int_t RemoveTracklets();
68 void FindOther3DVertices(TTree *itsClusterTree);
70c95f95 69
cd1c2af1 70 enum {kMaxCluPerMod=250};
6a0d56b8 71
f5f6da22 72 TClonesArray fLines; //! array of tracklets
6a0d56b8 73 AliESDVertex fVert3D; // 3D Vertex
6b4d9537 74 Float_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
75 Float_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method)
76 Float_t fCutOnPairs; //cut on distance between pairs of tracklets
05d1294c 77 Float_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
78 Float_t fMaxRCut; // cut on tracklet DCA to beam axis
70c95f95 79 Float_t fZCutDiamond; // cut on +-Z of the diamond
05d1294c 80 Float_t fMaxZCut; // cut on Z distance from estimated vertex
70c95f95 81 Float_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
82 Float_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
6a0d56b8 83 Float_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
84 Float_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
cd1c2af1 85 TBits fUsedCluster; // flag for used clusters in vertex calculation
86 TH1F *fZHisto; //! histogram with coarse z distribution
87 Float_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
88 UShort_t fPileupAlgo; // Algo for pileup identification
89 // 0->VertexerZ pileup algo
90 // 1->Unused RecPoints algo
6a0d56b8 91
6b4d9537 92 ClassDef(AliITSVertexer3D,8);
70c95f95 93
94};
95
96#endif