X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=STEER%2FAliVertexerTracks.h;h=a5e5f4f00fc69cd7f3f1e49d7bbcd38aff2f3072;hb=5f2d4eea559190ff8f892be4ad116563dfefb421;hp=23764b39791a208562db7753b33a0d88112bb609;hpb=eae1677ed7d11e690017f4bdfd5ec9cd8b974598;p=u%2Fmrichter%2FAliRoot.git diff --git a/STEER/AliVertexerTracks.h b/STEER/AliVertexerTracks.h index 23764b39791..a5e5f4f00fc 100644 --- a/STEER/AliVertexerTracks.h +++ b/STEER/AliVertexerTracks.h @@ -5,7 +5,7 @@ //------------------------------------------------------- -// Class for vertex determination with ESD tracks +// Class for vertex determination with tracks // // Origin: AliITSVertexerTracks // A.Dainese, Padova, andrea.dainese@pd.infn.it @@ -16,79 +16,154 @@ /***************************************************************************** * * - * This class determines the vertex of a set of ESD tracks. * + * This class determines the vertex of a set of tracks. * * Different algorithms are implemented, see data member fAlgo. * * * *****************************************************************************/ +#include +#include + #include "AliESDVertex.h" -#include "AliTracker.h" +#include "AliExternalTrackParam.h" #include "AliLog.h" -#include - -class TTree; -class AliESD; +class AliVEvent; +class AliESDEvent; +class AliStrLine; class AliVertexerTracks : public TObject { public: AliVertexerTracks(); - AliVertexerTracks(Double_t xStart, Double_t yStart); + AliVertexerTracks(Double_t fieldkG); virtual ~AliVertexerTracks(); - - // computes the vertex from the set of tracks in the tree - AliVertex* VertexForSelectedTracks(TTree *trkTree); - AliVertex* VertexForSelectedTracks(TObjArray *trkArray); - AliESDVertex* FindPrimaryVertex(const AliESD *esdEvent); - AliESDVertex* FindPrimaryVertexOld(const AliESD *esdEvent); - void SetMinTracks(Int_t n=2) { fMinTracks = n; return; } - void SetMinITSClusters(Int_t n=5) { fMinITSClusters = n; return; } + AliESDVertex* FindPrimaryVertex(AliVEvent *vEvent); + AliESDVertex* FindPrimaryVertex(TObjArray *trkArrayOrig,UShort_t *idOrig); + AliESDVertex* VertexForSelectedTracks(TObjArray *trkArray,UShort_t *id, + Bool_t optUseFitter=kTRUE, + Bool_t optPropagate=kTRUE, + Bool_t optUseDiamondConstraint=kFALSE); + AliESDVertex* VertexForSelectedESDTracks(TObjArray *trkArray, + Bool_t optUseFitter=kTRUE, + Bool_t optPropagate=kTRUE, + Bool_t optUseDiamondConstraint=kFALSE); + AliESDVertex* RemoveTracksFromVertex(AliESDVertex *inVtx, + TObjArray *trkArray,UShort_t *id, + Float_t *diamondxy) const; + AliESDVertex* RemoveConstraintFromVertex(AliESDVertex *inVtx, + Float_t *diamondxyz, + Float_t *diamondcov) const; + void SetITSMode(Double_t dcacut=0.1, + Double_t dcacutIter0=0.1, + Double_t maxd0z0=0.5, + Int_t minCls=5, + Int_t mintrks=1, + Double_t nsigma=3., + Double_t mindetfitter=100., + Double_t maxtgl=1000., + Double_t fidR=3., + Double_t fidZ=30., + Int_t finderAlgo=1, + Int_t finderAlgoIter0=4); + void SetTPCMode(Double_t dcacut=0.1, + Double_t dcacutIter0=1.0, + Double_t maxd0z0=5.0, + Int_t minCls=10, + Int_t mintrks=1, + Double_t nsigma=3., + Double_t mindetfitter=0.1, + Double_t maxtgl=1.5, + Double_t fidR=3., + Double_t fidZ=30., + Int_t finderAlgo=1, + Int_t finderAlgoIter0=4); + void SetCuts(Double_t *cuts); + void SetConstraintOff() { fConstraint=kFALSE; return; } + void SetConstraintOn() { fConstraint=kTRUE; return; } + void SetDCAcut(Double_t maxdca) { fDCAcut=maxdca; return; } + void SetDCAcutIter0(Double_t maxdca) { fDCAcutIter0=maxdca; return; } + void SetFinderAlgorithm(Int_t opt=1) { fAlgo=opt; return; } + void SetITSrefitRequired() { fITSrefit=kTRUE; return; } + Bool_t GetITSrefitRequired() const { return fITSrefit; } + void SetITSrefitNotRequired() { fITSrefit=kFALSE; return; } + void SetFiducialRZ(Double_t r=3,Double_t z=30) { fFiducialR=r; fFiducialZ=z; return; } + void SetMaxd0z0(Double_t maxd0z0=0.5) { fMaxd0z0=maxd0z0; return; } + void SetMinClusters(Int_t n=5) { fMinClusters=n; return; } + Int_t GetMinClusters() const { return fMinClusters; } + void SetMinTracks(Int_t n=1) { fMinTracks=n; return; } + void SetNSigmad0(Double_t n=3) { fNSigma=n; return; } + Double_t GetNSigmad0() const { return fNSigma; } + void SetMinDetFitter(Double_t mindet=100.) { fMinDetFitter=mindet; return; } + void SetMaxTgl(Double_t maxtgl=1.) { fMaxTgl=maxtgl; return; } + void SetOnlyFitter() { if(!fConstraint) AliFatal("Set constraint first!"); + fOnlyFitter=kTRUE; return; } void SetSkipTracks(Int_t n,Int_t *skipped); - void SetDebug(Int_t optdebug=0) {fDebug=optdebug;} void SetVtxStart(Double_t x=0,Double_t y=0,Double_t z=0) { fNominalPos[0]=x; fNominalPos[1]=y; fNominalPos[2]=z; return; } - void SetVtxStartSigma(Double_t sx=3,Double_t sy=3,Double_t sz=6) - { fNominalSigma[0]=sx; fNominalSigma[1]=sy; fNominalSigma[2]=sz; return; } - void SetVtxStart(AliESDVertex *vtx) - { SetVtxStart(vtx->GetXv(),vtx->GetYv(),vtx->GetZv()); - SetVtxStartSigma(vtx->GetXRes(),vtx->GetYRes(),vtx->GetZRes()); return; } - void SetDCAcut(Double_t maxdca) - { fDCAcut=maxdca; return;} - void SetFinderAlgorithm(Int_t opt=1) - { fAlgo=opt; return;} - void SetNSigmad0(Double_t n=3) - { fNSigma=n; return; } + void SetVtxStartSigma(Double_t sx=3.,Double_t sy=3.,Double_t sz=15.) + { fNominalCov[0]=sx*sx; fNominalCov[2]=sy*sy; fNominalCov[5]=sz*sz; + fNominalCov[1]=0.; fNominalCov[3]=0.; fNominalCov[4]=0.; return; } + void SetVtxStart(AliESDVertex *vtx); static Double_t GetStrLinMinDist(Double_t *p0,Double_t *p1,Double_t *x0); static Double_t GetDeterminant3X3(Double_t matr[][3]); static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t (*m)[3],Double_t *d); static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t *sigmasq,Double_t (*m)[3],Double_t *d); + static AliESDVertex TrackletVertexFinder(TClonesArray *lines, Int_t optUseWeights=0); + static AliESDVertex TrackletVertexFinder(AliStrLine **lines, const Int_t knacc, Int_t optUseWeights=0); + void SetFieldkG(Double_t field=-999.) { fFieldkG=field; return; } + Double_t GetFieldkG() const { + if(fFieldkG<-99.) AliFatal("Field value not set"); + return fFieldkG; } + void SetNSigmaForUi00(Double_t n=1.5) { fnSigmaForUi00=n; return; } + Double_t GetNSigmaForUi00() const { return fnSigmaForUi00; } protected: - Double_t GetField() const { return AliTracker::GetBz();} - Int_t PrepareTracks(TTree &trkTree, Int_t OptImpParCut); - Double_t Sigmad0rphi(Double_t pt) const; - void VertexFinder(Int_t optUseWeights=0); void HelixVertexFinder(); - void StrLinVertexFinderMinDist(Int_t OptUseWeights=0); - void VertexFitter(Bool_t useNominaVtx=kFALSE); - void TooFewTracks(const AliESD *esdEvent); + void OneTrackVertFinder(); + Int_t PrepareTracks(TObjArray &trkArrayOrig,UShort_t *idOrig, + Int_t optImpParCut); + Bool_t PropagateTrackTo(AliExternalTrackParam *track, + Double_t xToGo); + Bool_t TrackToPoint(AliExternalTrackParam *t, + TMatrixD &ri,TMatrixD &wWi, + Bool_t uUi3by3=kFALSE) const; + void VertexFinder(Int_t optUseWeights=0); + void VertexFitter(); + void StrLinVertexFinderMinDist(Int_t optUseWeights=0); + void TooFewTracks(); - - AliVertex fVert; // vertex after vertex finder + AliESDVertex fVert; // vertex after vertex finder AliESDVertex *fCurrentVertex; // ESD vertex after fitter + UShort_t fMode; // 0 ITS+TPC; 1 TPC + Double_t fFieldkG; // z component of field (kGauss) Double_t fNominalPos[3]; // initial knowledge on vertex position - Double_t fNominalSigma[3]; // initial knowledge on vertex position - Int_t fMinTracks; // minimum number of tracks - Int_t fMinITSClusters; // minimum number of ITS clusters per track - TObjArray fTrkArray; // array with tracks to be processed - Int_t *fTrksToSkip; // tracks to be skipped for find and fit + Double_t fNominalCov[6]; // initial knowledge on vertex position + TObjArray fTrkArraySel; // array with tracks to be processed + UShort_t *fIdSel; // IDs of the tracks (AliESDtrack::GetID()) + Int_t *fTrksToSkip; // track IDs to be skipped for find and fit Int_t fNTrksToSkip; // number of tracks to be skipped + Bool_t fConstraint; // true when "mean vertex" was set in + // fNominal ... and must be used in the fit + Bool_t fOnlyFitter; // primary with one fitter shot only + // (use only with beam constraint) + Int_t fMinTracks; // minimum number of tracks + Int_t fMinClusters; // minimum number of ITS or TPC clusters per track Double_t fDCAcut; // maximum DCA between 2 tracks used for vertex - Int_t fAlgo; // option for vertex finding algorythm + Double_t fDCAcutIter0; // maximum DCA between 2 tracks used for vertex Double_t fNSigma; // number of sigmas for d0 cut in PrepareTracks() - Int_t fDebug; //! debug flag - verbose printing if >0 + Double_t fMaxd0z0; // value for sqrt(d0d0+z0z0) cut + // in PrepareTracks(1) if fConstraint=kFALSE + Double_t fMinDetFitter; // minimum determinant to try to invertex matrix + Double_t fMaxTgl; // maximum tgl of tracks + Bool_t fITSrefit; // if kTRUE (default), use only kITSrefit tracks + // if kFALSE, use all tracks (also TPC only) + Double_t fFiducialR; // radius of fiducial cylinder for tracks + Double_t fFiducialZ; // length of fiducial cylinder for tracks + Double_t fnSigmaForUi00; // n. sigmas from finder in TrackToPoint + Int_t fAlgo; // option for vertex finding algorythm + Int_t fAlgoIter0; // this is for iteration 0 // fAlgo=1 (default) finds minimum-distance point among all selected tracks // approximated as straight lines // and uses errors on track parameters as weights @@ -103,7 +178,12 @@ class AliVertexerTracks : public TObject { // approximated as straight lines - ClassDef(AliVertexerTracks,4) // 3D Vertexing with ESD tracks + private: + AliVertexerTracks(const AliVertexerTracks & source); + AliVertexerTracks & operator=(const AliVertexerTracks & source); + + ClassDef(AliVertexerTracks,12) // 3D Vertexing with tracks }; #endif +