+#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;
class AliITStrackerSA : public AliITStrackerMI {
public:
AliITStrackerSA();
- AliITStrackerSA(AliITSgeom *geom);
- AliITStrackerSA(AliITSgeom *geom,AliESDVertex *vert);
- AliITStrackerSA(AliITSgeom *geom,AliITSVertexer *vertexer);
- AliITStrackerSA(AliITStrackerSA& tracker);
+ 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 rc = AliITStrackerMI::Clusters2Tracks(event); if(!rc) rc=FindTracks(event); return rc;}
- Int_t FindTracks(AliESD* event);
- void FindTracks(TTree *out,Int_t evnumber=0);
- AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,
- Double_t *errorprimvert);
-
- AliITStrackV2* FindTrackLowChiSquare(TObjArray* tracklist, Int_t dim) const;
- Int_t LoadClusters(TTree *cf) {Int_t rc=AliITStrackerMI::LoadClusters(cf); SetClusterTree(cf);SetSixPoints(kTRUE); return rc;}
+ virtual Int_t Clusters2Tracks(AliESDEvent *event);
+ Int_t FindTracks(AliESDEvent* event);
+
+ AliITStrackV2* FitTrack(AliITStrackSA* tr,Double_t* primaryVertex,Bool_t onePoint=kFALSE);
+ void StoreTrack(AliITStrackV2 *t,AliESDEvent *event) 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 = kTRUE){fSixPoints = sp;}
- Bool_t GetSixPoints() const {return fSixPoints;}
- void SetWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
- void UseFoundTracksV2(Int_t evnum,TTree* treev2);
- void UseFoundTracksV2(AliESD *event);
+ 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 SetFixedWindowSizes(Int_t n=46, Double_t *phi=0, Double_t *lam=0);
+ void SetCalculatedWindowSizes(Int_t n=10, Float_t phimin=0.002, Float_t phimax=0.0145, Float_t lambdamin=0.003, Float_t lambdamax=0.008);
+
+ void SetMinNPoints(Int_t np){fMinNPoints=np;}
+ Int_t GetMinNPoints() const {return fMinNPoints;}
+ void SetMinimumChargeSDDSSD(Float_t minq=0.){fMinQ=minq;}
enum {kSAflag=0x8000}; //flag to mark clusters used in the SA tracker
-
protected:
- // copy constructor (NO copy allowed: the constructor is protected
- // to avoid misuse)
- AliITStrackerSA(const AliITStrackerSA& trkr);
- // assignment operator (NO assignment allowed)
- AliITStrackerSA& operator=(const AliITStrackerSA& /* trkr */);
//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);
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);
+
+ 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
Double_t *fLambdaWin; // lambda window sizes
AliESDVertex *fVert; //! primary vertex
AliITSVertexer *fVertexer; //! vertexer
- AliITSgeom *fGeom; //! ITS geometry
TObjArray *fListOfTracks; //! container for found tracks
+ TObjArray *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
- AliITSclusterTable* fTable; // table with clusters
- ClassDef(AliITStrackerSA,1)
+ 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
+ Float_t fMinQ; // lower cut on cluster charge (SDD and SSD)
+
+ TClonesArray** fCluLayer; //! array with clusters
+ TClonesArray** fCluCoord; //! array with cluster info
+
+ ClassDef(AliITStrackerSA,9)
};
#endif
-
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