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[u/mrichter/AliRoot.git] / ITS / AliITSVertexerZ.h
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0c6af5c9 1#ifndef ALIITSVERTEXERZ_H
2#define ALIITSVERTEXERZ_H
3
4#include<AliITSVertexer.h>
5
6///////////////////////////////////////////////////////////////////
7// //
8// Class for primary vertex finding //
9// //
10///////////////////////////////////////////////////////////////////
11
12class TFile;
13class TString;
d681bb2d 14class AliESDVertex;
0c6af5c9 15class TH1F;
16
17class AliITSVertexerZ : public AliITSVertexer {
18
19 public:
20
21 AliITSVertexerZ();
22 AliITSVertexerZ(TString filename,Float_t x0=0., Float_t y0=0.);
23 virtual ~AliITSVertexerZ();
d681bb2d 24 virtual AliESDVertex* FindVertexForCurrentEvent(Int_t evnumb);
0c6af5c9 25 virtual void FindVertices();
26 virtual void PrintStatus() const;
27 void SetDiffPhiMax(Float_t pm = 0.01){fDiffPhiMax = pm;}
28 void SetFirstLayerModules(Int_t m1 = 0, Int_t m2 = 79){fFirstL1 = m1; fLastL1 = m2;}
29 void SetSecondLayerModules(Int_t m1 = 80, Int_t m2 = 239){fFirstL2 = m1; fLastL2 = m2;}
1fa72ea5 30 void SetLowLimit(Float_t lim=-20.){fLowLim = lim;}
31 void SetHighLimit(Float_t lim=20.){fHighLim = lim;}
0c6af5c9 32 Float_t GetLowLimit() const {return fLowLim;}
33 Float_t GetHighLimit() const {return fHighLim;}
34 void SetBinWidthCoarse(Float_t bw=0.01){fStepCoarse = bw;}
35 void SetBinWidthFine(Float_t bw=0.0005){fStepFine = bw;}
ecc64c3f 36 void SetPPsetting(Float_t cl2=250., Float_t coarsebin=0.02){fPPsetting[0]=cl2; fPPsetting[1]=coarsebin;}
0c6af5c9 37 Float_t GetBinWidthCoarse() const {return fStepCoarse;}
38 Float_t GetBinWidthFine() const {return fStepFine;}
39 void SetTolerance(Float_t tol = 20./10000.){fTolerance = tol;}
40 Float_t GetTolerance() const {return fTolerance;}
41
42 protected:
43 AliITSVertexerZ(const AliITSVertexerZ& vtxr);
44 AliITSVertexerZ& operator=(const AliITSVertexerZ& /* vtxr */);
45 void ResetHistograms();
46
47 Int_t fFirstL1; // first module of the first pixel layer used
48 Int_t fLastL1; // last module of the first pixel layer used
49 Int_t fFirstL2; // first module of the second pixel layer used
50 Int_t fLastL2; // last module of the second pixel layer used
51 Float_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
52 Float_t fX0; // Nominal x coordinate of the vertex
53 Float_t fY0; // Nominal y coordinate of the vertex
0c6af5c9 54 Float_t fZFound; //! found value for the current event
55 Float_t fZsig; //! RMS of Z
56 TH1F *fZCombc; //! histogram with coarse z distribution
ecc64c3f 57 TH1F *fZCombv; //! histogram with very coarse z (step=3coarse)distribution
0c6af5c9 58 TH1F *fZCombf; //! histogram with fine z distribution
59 Float_t fLowLim; // low limit for fZComb histograms
60 Float_t fHighLim; // high limit for fZComb histograms
61 Float_t fStepCoarse; // bin width for fZCombc
62 Float_t fStepFine; // bin width for fZCombf
63 Float_t fTolerance; // tolerance on the symmetry of the Z interval
ecc64c3f 64 Float_t fPPsetting[2]; // [0] is the max. number of clusters on L2 to use [1] as fStepCoarse
0c6af5c9 65
ecc64c3f 66 ClassDef(AliITSVertexerZ,3);
0c6af5c9 67};
68
69#endif