+#include "AliITSgeomTGeo.h"
#include "AliITStrackerMI.h"
/* Copyright(c) 1998-2003, ALICE Experiment at CERN, All rights reserved. *
* See cxx source for full Copyright notice */
+/* $Id$ */
+
+
////////////////////////////////////////////////////
// Stand alone tracker class //
// Origin: Elisabetta Crescio //
// e-mail: crescio@to.infn.it //
+// adapted for cosmics by A.Dainese //
////////////////////////////////////////////////////
class AliITSclusterTable;
class AliITStrackSA;
class AliESDVertex;
+class AliESDEvent;
class AliITSVertexer;
class TTree;
class TArrayD;
AliITStrackerSA(const Char_t *geom);
AliITStrackerSA(const Char_t *geom,AliESDVertex *vert);
AliITStrackerSA(const Char_t *geom,AliITSVertexer *vertexer);
- AliITStrackerSA(const AliITStrackerSA& tracker);
- AliITStrackerSA& operator=(const AliITStrackerSA& source);
virtual ~AliITStrackerSA();
- virtual Int_t Clusters2Tracks(AliESD *event);
- Int_t FindTracks(AliESD* event);
+ virtual Int_t Clusters2Tracks(AliESDEvent *event);
+ Int_t FindTracks(AliESDEvent* event, Bool_t useAllClusters=kFALSE);
- AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex);
-
- Int_t FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const;
- Int_t LoadClusters(TTree *cf) {Int_t rc=AliITStrackerMI::LoadClusters(cf); SetClusterTree(cf);SetSixPoints(kTRUE); return rc;}
+ AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,Bool_t onePoint=kFALSE);
+ void StoreTrack(AliITStrackV2 *t,AliESDEvent *event, Bool_t pureSA) const;
+ Int_t FindTrackLowChiSquare() const;
+ Int_t LoadClusters(TTree *cf) {Int_t rc=AliITStrackerMI::LoadClusters(cf); SetClusterTree(cf); return rc;}
void SetVertex(AliESDVertex *vtx){fVert = vtx;}
void SetClusterTree(TTree * itscl){fITSclusters = itscl;}
- void SetSixPoints(Bool_t sp = kFALSE){fSixPoints = sp;}
- Bool_t GetSixPoints() const {return fSixPoints;}
+
+ void SetOutwardFinding() {fInwardFlag=kFALSE;}
+ void SetInwardFinding() {fInwardFlag=kTRUE;}
+ void SetOuterStartLayer(Int_t osl = 0) {
+ if(osl>(AliITSgeomTGeo::GetNLayers()-2)) AliWarning("Minimum Number of layers is 2. OuterStartLayer set to Nlayers-2");
+ fOuterStartLayer = TMath::Min(AliITSgeomTGeo::GetNLayers()-2,osl);
+ }
+ Int_t GetOuterStartLayer() const {return fOuterStartLayer;}
+ void SetInnerStartLayer(Int_t isl = 5) {
+ if(isl<1) AliWarning("Minimum Number of layers is 2. InnerStartLayer set to 1");
+ fInnerStartLayer = TMath::Max(1,isl);
+ }
+ Int_t GetInnerStartLayer() const {return fInnerStartLayer;}
+
void SetSAFlag(Bool_t fl){fITSStandAlone=fl;} // StandAlone flag setter
Bool_t GetSAFlag() const {return fITSStandAlone;} // StandAlone flag getter
- void SetWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
+ void SetFixedWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
+ void SetCalculatedWindowSizes(Int_t n=10, Double_t phimin=0.002, Double_t phimax=0.0145, Double_t lambdamin=0.003, Double_t lambdamax=0.008);
+ void SetMinNPoints(Int_t np){fMinNPoints=np;}
+ Int_t GetMinNPoints() const {return fMinNPoints;}
+ void SetMinimumChargeSDDSSD(Double_t minq=0.){fMinQ=minq;}
enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker
-
protected:
//Initialization
void Init();
void ResetForFinding();
void UpdatePoints();
-
+ Bool_t SetFirstPoint(Int_t lay, Int_t clu, Double_t* primaryVertex);
static Double_t Curvature(Double_t x1,Double_t y1,Double_t x2,Double_t y2,
Double_t x3,Double_t y3);
Double_t ChoosePoint(Double_t p1, Double_t p2, Double_t pp);
- static Int_t FindIntersection(Float_t a1, Float_t b1, Float_t c1, Float_t c2,
- Float_t& x1,Float_t& y1, Float_t& x2, Float_t& y2);
- static Int_t FindEquation(Float_t x1, Float_t y1, Float_t x2, Float_t y2,
- Float_t x3, Float_t y3,Float_t& a, Float_t& b,
- Float_t& c);
-
- static Int_t FindLabel(Int_t l1, Int_t l2, Int_t l3, Int_t l4, Int_t l5, Int_t l6);
- static Int_t Label(Int_t gl1, Int_t gl2, Int_t gl3, Int_t gl4, Int_t gl5,
- Int_t gl6,Int_t gl7, Int_t gl8, Int_t gl9, Int_t gl10,Int_t gl11,
- Int_t gl12, Int_t gl13, Int_t gl14,Int_t gl15, Int_t gl16,
- Int_t gl17, Int_t gl18, Int_t numberofpoints=6);
+ static Int_t FindIntersection(Double_t a1, Double_t b1, Double_t c1, Double_t c2,
+ Double_t& x1,Double_t& y1, Double_t& x2, Double_t& y2);
+ static Int_t FindEquation(Double_t x1, Double_t y1, Double_t x2, Double_t y2,
+ Double_t x3, Double_t y3,Double_t& a, Double_t& b,
+ Double_t& c);
+ Int_t FindLabel(AliITStrackV2* track);
Int_t SearchClusters(Int_t layer,Double_t phiwindow,Double_t lambdawindow,
AliITStrackSA* trs,Double_t zvertex,Int_t flagp);
- void GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda,Float_t &x,Float_t &y,Float_t &z,Double_t* vertex);
- void GetCoorErrors(AliITSRecPoint* cl,Float_t &sx,Float_t &sy, Float_t &sz);
+ void GetCoorAngles(AliITSRecPoint* cl,Double_t &phi,Double_t &lambda,Double_t &x,Double_t &y,Double_t &z,Double_t* vertex);
+ void GetCoorErrors(AliITSRecPoint* cl,Double_t &sx,Double_t &sy, Double_t &sz);
AliITSclusterTable* GetClusterCoord(Int_t layer,Int_t n) const {return (AliITSclusterTable*)fCluCoord[layer]->UncheckedAt(n);}
void RemoveClusterCoord(Int_t layer, Int_t n) {fCluCoord[layer]->RemoveAt(n);fCluCoord[layer]->Compress();}
Double_t fPhiEstimate; //Estimation of phi angle on next layer
Bool_t fITSStandAlone; //Tracking is performed in the ITS alone if kTRUE
- Float_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature
- Float_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature
- Float_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature
- Float_t fPointc[2]; //! current point coord (for curvature eval.)
+ Double_t fPoint1[2]; //! coord. of 1-st point to evaluate the curvature
+ Double_t fPoint2[2]; //! coord. of 2-nd point to evaluate the curvature
+ Double_t fPoint3[2]; //! coord. of 3-rd point to evaluate the curvature
+ Double_t fPointc[2]; //! current point coord (for curvature eval.)
Double_t fLambdac; //! current value of the Lambda angle in the window
Double_t fPhic; //! current value of the Phi angle in the window
- Float_t fCoef1; //! param. of the equation of the circ. approx a layer
- Float_t fCoef2; //! param. of the equation of the circ. approx a layer
- Float_t fCoef3; //! param. of the equation of the circ. approx a layer
+ Double_t fCoef1; //! param. of the equation of the circ. approx a layer
+ Double_t fCoef2; //! param. of the equation of the circ. approx a layer
+ Double_t fCoef3; //! param. of the equation of the circ. approx a layer
Int_t fNloop; // Number of iterqations on phi and lambda windows
Double_t *fPhiWin; // phi window sizes
Double_t *fLambdaWin; // lambda window sizes
AliESDVertex *fVert; //! primary vertex
AliITSVertexer *fVertexer; //! vertexer
- TObjArray *fListOfTracks; //! container for found tracks
+ TClonesArray *fListOfTracks; //! container for found tracks
+ TClonesArray *fListOfSATracks; //! container for found SA tracks
TTree *fITSclusters; //! pointer to ITS tree of clusters
- Bool_t fSixPoints; // If true 6/6 points are required (default). 5/6 otherwise
+ Bool_t fInwardFlag; // set to kTRUE for inward track finding
+ Int_t fOuterStartLayer; // Outward search for tracks with <6 points: outer layer to start from
+ Int_t fInnerStartLayer; // Inward search for tracks with <6 points: inner layer to start from
+ Int_t fMinNPoints; // minimum number of clusters for a track
+ Double_t fMinQ; // lower cut on cluster charge (SDD and SSD)
TClonesArray** fCluLayer; //! array with clusters
TClonesArray** fCluCoord; //! array with cluster info
- ClassDef(AliITStrackerSA,4)
+ private:
+ AliITStrackerSA(const AliITStrackerSA& tracker);
+ AliITStrackerSA& operator=(const AliITStrackerSA& source);
+
+ ClassDef(AliITStrackerSA,11)
};
#endif
+
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