[u/mrichter/AliRoot.git] / ITS / AliITSVertexer3D.h

#ifndef ALIITSVERTEXER3D_H
#define ALIITSVERTEXER3D_H

#include<AliITSVertexer.h>

///////////////////////////////////////////////////////////////////
//                                                               //
// Class for primary vertex finding  (3D reconstruction)         //
//                                                               //
///////////////////////////////////////////////////////////////////

/* $Id$ */

#include <TClonesArray.h>
#include <AliESDVertex.h>
#include <TH3F.h>
#include <TBits.h>

class AliITSVertexer3D : public AliITSVertexer {

 public:

  AliITSVertexer3D();
  virtual ~AliITSVertexer3D();
  virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
  void FindVertex3DIterative();
  void FindVertex3D(TTree *itsClusterTree);
  AliESDVertex GetVertex3D() const {return fVert3D;}
  virtual void PrintStatus() const;
  static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
  void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){
    SetCoarseMaxRCut(dr);
    SetZCutDiamond(dz);
  }
  void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
    SetMaxRCut(dr);
    SetMaxZCut(dz);
  }
  void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
    SetCoarseDiffPhiCut(dphiloose);
    SetDiffPhiMax(dphitight);
  }
  void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
  void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;}
  void SetCutOnPairs(Double_t cp = 0.1){fCutOnPairs = cp;}
  void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;}
  void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;}
  void SetZCutDiamond(Double_t zcut = 20.0){fZCutDiamond=zcut;}
  void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;}
  void SetDCACut(Double_t dca=0.1){fDCAcut=dca;} 
  void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;}
  void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;}
  void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
  void SetMeanPPtSelTracks(Double_t fieldTesla);
  void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
  void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
  void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
  void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
  void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}

protected:
  AliITSVertexer3D(const AliITSVertexer3D& vtxr);
  AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
  Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
  Int_t Prepare3DVertex(Int_t optCuts);
  void ResetVert3D();
  void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
  void PileupFromZ();
  void MarkUsedClusters();
  Int_t RemoveTracklets();
  void  FindOther3DVertices(TTree *itsClusterTree);

  enum {kMaxCluPerMod=250};

  TClonesArray fLines;      //! array of tracklets
  AliESDVertex fVert3D;        // 3D Vertex
  Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
  Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method) 
  Double_t fCutOnPairs; //cut on distance between pairs of tracklets 
  Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
  Double_t fMaxRCut; // cut on tracklet DCA to beam axis
  Double_t fZCutDiamond;   // cut on +-Z of the diamond
  Double_t fMaxZCut;   // cut on Z distance from estimated vertex
  Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
  Double_t fDiffPhiMax;     // Maximum delta phi allowed among corr. pixels
  Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
  Double_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
  TBits   fUsedCluster;  // flag for used clusters in vertex calculation
  TH1F *fZHisto;           //! histogram with coarse z distribution
  Double_t  fDCAforPileup;  // Minimum DCA to 1st vertex for pileup tracklets 
  Double_t  fDiffPhiforPileup;  // Cut on delta phi for pileup 
  Double_t  fBinSizeR;      // Histo3D bin size along radius
  Double_t  fBinSizeZ;      // Histo3D bin size along z
  UShort_t fPileupAlgo;    // Algo for pileup identification
                           // 0->VertexerZ pileup algo
                           // 1->Unused RecPoints algo

  ClassDef(AliITSVertexer3D,11);

};

#endif
Commit	Line	Data
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	/* $Id$ */
6a0d56b8	13
f5f6da22	14	#include <TClonesArray.h>
6a0d56b8	15	#include <AliESDVertex.h>
7340864d	16	#include <TH3F.h>
cd1c2af1	17	#include <TBits.h>
70c95f95	18
	19	class AliITSVertexer3D : public AliITSVertexer {
	20
	21	public:
	22
	23	AliITSVertexer3D();
70c95f95	24	virtual ~AliITSVertexer3D();
308c2f7c	25	virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
6b4d9537	26	void FindVertex3DIterative();
6b4d9537	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);
242c8025	31	void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){
7203e11a	32	SetCoarseMaxRCut(dr);
	33	SetZCutDiamond(dz);
	34	}
242c8025	35	void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
7203e11a	36	SetMaxRCut(dr);
	37	SetMaxZCut(dz);
	38	}
242c8025	39	void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
7203e11a	40	SetCoarseDiffPhiCut(dphiloose);
	41	SetDiffPhiMax(dphitight);
	42	}
242c8025	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;}
0496a544	54	void SetMeanPPtSelTracks(Double_t fieldTesla);
242c8025	55	void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
c238ba33	56	void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
cd1c2af1	57	void SetPileupAlgo(UShort_t optalgo=0){fPileupAlgo=optalgo;}
242c8025	58	void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
242c8025	59	void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}
70c95f95	60
	61	protected:
	62	AliITSVertexer3D(const AliITSVertexer3D& vtxr);
	63	AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
308c2f7c	64	Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
05d1294c	65	Int_t Prepare3DVertex(Int_t optCuts);
27167524	66	void ResetVert3D();
7340864d	67	void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
cd1c2af1	68	void PileupFromZ();
	69	void MarkUsedClusters();
	70	Int_t RemoveTracklets();
	71	void FindOther3DVertices(TTree *itsClusterTree);
70c95f95	72
cd1c2af1	73	enum {kMaxCluPerMod=250};
6a0d56b8	74
f5f6da22	75	TClonesArray fLines; //! array of tracklets
6a0d56b8	76	AliESDVertex fVert3D; // 3D Vertex
242c8025	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
cd1c2af1	88	TBits fUsedCluster; // flag for used clusters in vertex calculation
cd1c2af1	89	TH1F *fZHisto; //! histogram with coarse z distribution
242c8025	90	Double_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
c238ba33	91	Double_t fDiffPhiforPileup; // Cut on delta phi for pileup
242c8025	92	Double_t fBinSizeR; // Histo3D bin size along radius
242c8025	93	Double_t fBinSizeZ; // Histo3D bin size along z
cd1c2af1	94	UShort_t fPileupAlgo; // Algo for pileup identification
	95	// 0->VertexerZ pileup algo
	96	// 1->Unused RecPoints algo
6a0d56b8	97
c238ba33	98	ClassDef(AliITSVertexer3D,11);
70c95f95	99
	100	};
	101
	102	#endif