+++ /dev/null
-/**************************************************************************
- * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
- * *
- * Author: The ALICE Off-line Project. *
- * Contributors are mentioned in the code where appropriate. *
- * *
- * Permission to use, copy, modify and distribute this software and its *
- * documentation strictly for non-commercial purposes is hereby granted *
- * without fee, provided that the above copyright notice appears in all *
- * copies and that both the copyright notice and this permission notice *
- * appear in the supporting documentation. The authors make no claims *
- * about the suitability of this software for any purpose. It is *
- * provided "as is" without express or implied warranty. *
- **************************************************************************/
-/* $Id$ */
-
-//-------------------------------------------------------------------------
-// Implementation of the ITS tracker class
-// It reads AliITSRecPoint clusters and creates AliITStrackMI tracks
-// and fills with them the ESD
-// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
-// Current support and development:
-// Andrea Dainese, andrea.dainese@lnl.infn.it
-// dE/dx analysis by: Boris Batyunya, JINR, Boris.Batiounia@cern.ch
-// Params moved to AliITSRecoParam by: Andrea Dainese, INFN
-// Material budget from TGeo by: Ludovic Gaudichet & Andrea Dainese, INFN
-//-------------------------------------------------------------------------
-
-#include <TMatrixD.h>
-#include <TTree.h>
-#include <TDatabasePDG.h>
-#include <TString.h>
-#include <TRandom.h>
-#include <TTreeStream.h>
-#include <TVector3.h>
-#include <TBits.h>
-
-#include "AliLog.h"
-#include "AliGeomManager.h"
-#include "AliITSPlaneEff.h"
-#include "AliTrackPointArray.h"
-#include "AliESDEvent.h"
-#include "AliESDV0Params.h"
-#include "AliESDtrack.h"
-#include "AliV0.h"
-#include "AliITSChannelStatus.h"
-#include "AliITSDetTypeRec.h"
-#include "AliITSRecPoint.h"
-#include "AliITSRecPointContainer.h"
-#include "AliITSgeomTGeo.h"
-#include "AliITSReconstructor.h"
-#include "AliITSClusterParam.h"
-#include "AliITSsegmentation.h"
-#include "AliITSCalibration.h"
-#include "AliITSPlaneEffSPD.h"
-#include "AliITSPlaneEffSDD.h"
-#include "AliITSPlaneEffSSD.h"
-#include "AliITSV0Finder.h"
-#include "AliITStrackerMI.h"
-#include "AliMathBase.h"
-#include "AliPID.h"
-
-
-ClassImp(AliITStrackerMI)
-
-AliITStrackerMI::AliITSlayer AliITStrackerMI::fgLayers[AliITSgeomTGeo::kNLayers]; // ITS layers
-
-AliITStrackerMI::AliITStrackerMI():AliTracker(),
-fI(0),
-fBestTrack(),
-fTrackToFollow(),
-fTrackHypothesys(),
-fBestHypothesys(),
-fOriginal(),
-fCurrentEsdTrack(),
-fPass(0),
-fAfterV0(kFALSE),
-fLastLayerToTrackTo(0),
-fCoefficients(0),
-fEsd(0),
-fTrackingPhase("Default"),
-fUseTGeo(3),
-fNtracks(0),
-fFlagFakes(kFALSE),
-fSelectBestMIP03(kFALSE),
-fUseImproveKalman(kFALSE),
-fxOverX0Pipe(-1.),
-fxTimesRhoPipe(-1.),
-fxOverX0PipeTrks(0),
-fxTimesRhoPipeTrks(0),
-fxOverX0ShieldTrks(0),
-fxTimesRhoShieldTrks(0),
-fxOverX0LayerTrks(0),
-fxTimesRhoLayerTrks(0),
-fDebugStreamer(0),
-fITSChannelStatus(0),
-fkDetTypeRec(0),
-fPlaneEff(0),
-fSPDChipIntPlaneEff(0),
-fITSPid(0)
-
- {
- //Default constructor
- Int_t i;
- for(i=0;i<4;i++) fSPDdetzcentre[i]=0.;
- for(i=0;i<2;i++) {
- fxOverX0Shield[i]=-1.;
- fxTimesRhoShield[i]=-1.;
- fConstraint[i]=0;
- }
- for(i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
- fOriginal.SetOwner();
- for(i=0;i<AliITSgeomTGeo::kNLayers;i++)fForceSkippingOfLayer[i]=0;
- for(i=0;i<100000;i++)fBestTrackIndex[i]=0;
- fITSPid=new AliITSPIDResponse();
-
-}
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITStrackerMI(const Char_t *geom) : AliTracker(),
-fI(AliITSgeomTGeo::GetNLayers()),
-fBestTrack(),
-fTrackToFollow(),
-fTrackHypothesys(),
-fBestHypothesys(),
-fOriginal(),
-fCurrentEsdTrack(),
-fPass(0),
-fAfterV0(kFALSE),
-fLastLayerToTrackTo(AliITSRecoParam::GetLastLayerToTrackTo()),
-fCoefficients(0),
-fEsd(0),
-fTrackingPhase("Default"),
-fUseTGeo(3),
-fNtracks(0),
-fFlagFakes(kFALSE),
-fSelectBestMIP03(kFALSE),
-fUseImproveKalman(kFALSE),
-fxOverX0Pipe(-1.),
-fxTimesRhoPipe(-1.),
-fxOverX0PipeTrks(0),
-fxTimesRhoPipeTrks(0),
-fxOverX0ShieldTrks(0),
-fxTimesRhoShieldTrks(0),
-fxOverX0LayerTrks(0),
-fxTimesRhoLayerTrks(0),
-fDebugStreamer(0),
-fITSChannelStatus(0),
-fkDetTypeRec(0),
-fPlaneEff(0),
-fSPDChipIntPlaneEff(0),
-fITSPid(0) {
- //--------------------------------------------------------------------
- //This is the AliITStrackerMI constructor
- //--------------------------------------------------------------------
- if (geom) {
- AliWarning("\"geom\" is actually a dummy argument !");
- }
-
- fOriginal.SetOwner();
- fCoefficients = 0;
- fAfterV0 = kFALSE;
-
- for (Int_t i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
- Int_t nlad=AliITSgeomTGeo::GetNLadders(i);
- Int_t ndet=AliITSgeomTGeo::GetNDetectors(i);
-
- Double_t xyz[3], &x=xyz[0], &y=xyz[1], &z=xyz[2];
- AliITSgeomTGeo::GetTranslation(i,1,1,xyz);
- Double_t poff=TMath::ATan2(y,x);
- Double_t zoff=z;
-
- AliITSgeomTGeo::GetOrigTranslation(i,1,1,xyz);
- Double_t r=TMath::Sqrt(x*x + y*y);
-
- AliITSgeomTGeo::GetOrigTranslation(i,1,2,xyz);
- r += TMath::Sqrt(x*x + y*y);
- AliITSgeomTGeo::GetOrigTranslation(i,2,1,xyz);
- r += TMath::Sqrt(x*x + y*y);
- AliITSgeomTGeo::GetOrigTranslation(i,2,2,xyz);
- r += TMath::Sqrt(x*x + y*y);
- r*=0.25;
-
- new (fgLayers+i-1) AliITSlayer(r,poff,zoff,nlad,ndet);
-
- for (Int_t j=1; j<nlad+1; j++) {
- for (Int_t k=1; k<ndet+1; k++) { //Fill this layer with detectors
- TGeoHMatrix m; AliITSgeomTGeo::GetOrigMatrix(i,j,k,m);
- const TGeoHMatrix *tm=AliITSgeomTGeo::GetTracking2LocalMatrix(i,j,k);
- m.Multiply(tm);
- Double_t txyz[3]={0.};
- xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
- m.LocalToMaster(txyz,xyz);
- r=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
- Double_t phi=TMath::ATan2(xyz[1],xyz[0]);
-
- if (phi<0) phi+=TMath::TwoPi();
- else if (phi>=TMath::TwoPi()) phi-=TMath::TwoPi();
-
- AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
- new(&det) AliITSdetector(r,phi);
- // compute the real radius (with misalignment)
- TGeoHMatrix mmisal(*(AliITSgeomTGeo::GetMatrix(i,j,k)));
- mmisal.Multiply(tm);
- xyz[0]=0.;xyz[1]=0.;xyz[2]=0.;
- mmisal.LocalToMaster(txyz,xyz);
- Double_t rmisal=TMath::Sqrt(xyz[0]*xyz[0] + xyz[1]*xyz[1]);
- det.SetRmisal(rmisal);
-
- } // end loop on detectors
- } // end loop on ladders
- fForceSkippingOfLayer[i-1] = 0;
- } // end loop on layers
-
-
- fI=AliITSgeomTGeo::GetNLayers();
-
- fPass=0;
- fConstraint[0]=1; fConstraint[1]=0;
-
- Double_t xyzVtx[]={AliITSReconstructor::GetRecoParam()->GetXVdef(),
- AliITSReconstructor::GetRecoParam()->GetYVdef(),
- AliITSReconstructor::GetRecoParam()->GetZVdef()};
- Double_t ersVtx[]={AliITSReconstructor::GetRecoParam()->GetSigmaXVdef(),
- AliITSReconstructor::GetRecoParam()->GetSigmaYVdef(),
- AliITSReconstructor::GetRecoParam()->GetSigmaZVdef()};
- SetVertex(xyzVtx,ersVtx);
-
- fLastLayerToTrackTo=AliITSRecoParam::GetLastLayerToTrackTo();
- for (Int_t i=0;i<100000;i++){
- fBestTrackIndex[i]=0;
- }
-
- // store positions of centre of SPD modules (in z)
- // The convetion is that fSPDdetzcentre is ordered from -z to +z
- Double_t tr[3];
- AliITSgeomTGeo::GetTranslation(1,1,1,tr);
- if (tr[2]<0) { // old geom (up to v5asymmPPR)
- AliITSgeomTGeo::GetTranslation(1,1,1,tr);
- fSPDdetzcentre[0] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,2,tr);
- fSPDdetzcentre[1] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,3,tr);
- fSPDdetzcentre[2] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,4,tr);
- fSPDdetzcentre[3] = tr[2];
- } else { // new geom (from v11Hybrid)
- AliITSgeomTGeo::GetTranslation(1,1,4,tr);
- fSPDdetzcentre[0] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,3,tr);
- fSPDdetzcentre[1] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,2,tr);
- fSPDdetzcentre[2] = tr[2];
- AliITSgeomTGeo::GetTranslation(1,1,1,tr);
- fSPDdetzcentre[3] = tr[2];
- }
-
- fUseTGeo = AliITSReconstructor::GetRecoParam()->GetUseTGeoInTracker();
- if(AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance() && fUseTGeo!=1 && fUseTGeo!=3) {
- AliWarning("fUseTGeo changed to 3 because fExtendedEtaAcceptance is kTRUE");
- fUseTGeo = 3;
- }
-
- for(Int_t i=0;i<2;i++) {fxOverX0Shield[i]=-1.;fxTimesRhoShield[i]=-1.;}
- for(Int_t i=0;i<6;i++) {fxOverX0Layer[i]=-1.;fxTimesRhoLayer[i]=-1.;}
-
- if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)
- fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
-
- // only for plane efficiency evaluation
- if (AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
- AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0) {
- Int_t iplane=AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff();
- if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(iplane)!=1)
- AliWarning(Form("Evaluation of Plane Eff for layer %d will be attempted without removing it from tracker",iplane));
- if (iplane<2) {
- fPlaneEff = new AliITSPlaneEffSPD();
- fSPDChipIntPlaneEff = new Bool_t[AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip];
- for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
- }
- else if (iplane<4) fPlaneEff = new AliITSPlaneEffSDD();
- else fPlaneEff = new AliITSPlaneEffSSD();
- if(AliITSReconstructor::GetRecoParam()->GetReadPlaneEffFromOCDB())
- if(!fPlaneEff->ReadFromCDB()) {AliWarning("AliITStrackerMI reading of AliITSPlaneEff from OCDB failed") ;}
- if(AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) fPlaneEff->SetCreateHistos(kTRUE);
- }
- //
- // RS
- fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
- fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
- fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
- //
- fITSPid=new AliITSPIDResponse();
-}
-/*
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITStrackerMI(const AliITStrackerMI &tracker):AliTracker(tracker),
-fI(tracker.fI),
-fBestTrack(tracker.fBestTrack),
-fTrackToFollow(tracker.fTrackToFollow),
-fTrackHypothesys(tracker.fTrackHypothesys),
-fBestHypothesys(tracker.fBestHypothesys),
-fOriginal(tracker.fOriginal),
-fCurrentEsdTrack(tracker.fCurrentEsdTrack),
-fPass(tracker.fPass),
-fAfterV0(tracker.fAfterV0),
-fLastLayerToTrackTo(tracker.fLastLayerToTrackTo),
-fCoefficients(tracker.fCoefficients),
-fEsd(tracker.fEsd),
-fTrackingPhase(tracker.fTrackingPhase),
-fUseTGeo(tracker.fUseTGeo),
-fNtracks(tracker.fNtracks),
-fFlagFakes(tracker.fFlagFakes),
-fSelectBestMIP03(tracker.fSelectBestMIP03),
-fxOverX0Pipe(tracker.fxOverX0Pipe),
-fxTimesRhoPipe(tracker.fxTimesRhoPipe),
-fxOverX0PipeTrks(0),
-fxTimesRhoPipeTrks(0),
-fxOverX0ShieldTrks(0),
-fxTimesRhoShieldTrks(0),
-fxOverX0LayerTrks(0),
-fxTimesRhoLayerTrks(0),
-fDebugStreamer(tracker.fDebugStreamer),
-fITSChannelStatus(tracker.fITSChannelStatus),
-fkDetTypeRec(tracker.fkDetTypeRec),
-fPlaneEff(tracker.fPlaneEff) {
- //Copy constructor
- fOriginal.SetOwner();
- Int_t i;
- for(i=0;i<4;i++) {
- fSPDdetzcentre[i]=tracker.fSPDdetzcentre[i];
- }
- for(i=0;i<6;i++) {
- fxOverX0Layer[i]=tracker.fxOverX0Layer[i];
- fxTimesRhoLayer[i]=tracker.fxTimesRhoLayer[i];
- }
- for(i=0;i<2;i++) {
- fxOverX0Shield[i]=tracker.fxOverX0Shield[i];
- fxTimesRhoShield[i]=tracker.fxTimesRhoShield[i];
- }
-}
-
-//------------------------------------------------------------------------
-AliITStrackerMI & AliITStrackerMI::operator=(const AliITStrackerMI &tracker){
- //Assignment operator
- this->~AliITStrackerMI();
- new(this) AliITStrackerMI(tracker);
- return *this;
-}
-*/
-//------------------------------------------------------------------------
-AliITStrackerMI::~AliITStrackerMI()
-{
- //
- //destructor
- //
- if (fCoefficients) delete [] fCoefficients;
- DeleteTrksMaterialLUT();
- if (fDebugStreamer) {
- //fDebugStreamer->Close();
- delete fDebugStreamer;
- }
- if(fITSChannelStatus) delete fITSChannelStatus;
- if(fPlaneEff) delete fPlaneEff;
- if(fITSPid) delete fITSPid;
- if (fSPDChipIntPlaneEff) delete [] fSPDChipIntPlaneEff;
-
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::ReadBadFromDetTypeRec() {
- //--------------------------------------------------------------------
- //This function read ITS bad detectors, chips, channels from AliITSDetTypeRec
- //i.e. from OCDB
- //--------------------------------------------------------------------
-
- if(!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return;
-
- Info("ReadBadFromDetTypeRec","Reading info about bad ITS detectors and channels");
-
- if(!fkDetTypeRec) Error("ReadBadFromDetTypeRec","AliITSDetTypeRec nof found!\n");
-
- // ITS channels map
- if(fITSChannelStatus) delete fITSChannelStatus;
- fITSChannelStatus = new AliITSChannelStatus(fkDetTypeRec);
-
- // ITS detectors and chips
- Int_t i=0,j=0,k=0,ndet=0;
- for (i=1; i<AliITSgeomTGeo::GetNLayers()+1; i++) {
- Int_t nBadDetsPerLayer=0;
- ndet=AliITSgeomTGeo::GetNDetectors(i);
- for (j=1; j<AliITSgeomTGeo::GetNLadders(i)+1; j++) {
- for (k=1; k<ndet+1; k++) {
- AliITSdetector &det=fgLayers[i-1].GetDetector((j-1)*ndet + k-1);
- det.ReadBadDetectorAndChips(i-1,(j-1)*ndet + k-1,fkDetTypeRec);
- if(det.IsBad()) {nBadDetsPerLayer++;}
- } // end loop on detectors
- } // end loop on ladders
- AliInfo(Form("Layer %d: %d bad out of %d",i-1,nBadDetsPerLayer,ndet*AliITSgeomTGeo::GetNLadders(i)));
- } // end loop on layers
-
- return;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::LoadClusters(TTree *cTree) {
- //--------------------------------------------------------------------
- //This function loads ITS clusters
- //--------------------------------------------------------------------
-
- TClonesArray *clusters = NULL;
- AliITSRecPointContainer* rpcont=AliITSRecPointContainer::Instance();
- clusters=rpcont->FetchClusters(0,cTree);
- if(!clusters) return 1;
-
- if(!(rpcont->IsSPDActive() || rpcont->IsSDDActive() || rpcont->IsSSDActive())){
- AliError("ITS is not in a known running configuration: SPD, SDD and SSD are not active");
- return 1;
- }
- Int_t i=0,j=0,ndet=0;
- Int_t detector=0;
- for (i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
- ndet=fgLayers[i].GetNdetectors();
- Int_t jmax = j + fgLayers[i].GetNladders()*ndet;
- for (; j<jmax; j++) {
- // if (!cTree->GetEvent(j)) continue;
- clusters = rpcont->UncheckedGetClusters(j);
- if(!clusters)continue;
- Int_t ncl=clusters->GetEntriesFast();
- SignDeltas(clusters,GetZ());
-
- while (ncl--) {
- AliITSRecPoint *c=(AliITSRecPoint*)clusters->UncheckedAt(ncl);
- detector=c->GetDetectorIndex();
-
- if (!c->Misalign()) AliWarning("Can't misalign this cluster !");
-
- Int_t retval = fgLayers[i].InsertCluster(new AliITSRecPoint(*c));
- if(retval) {
- AliWarning(Form("Too many clusters on layer %d!",i));
- break;
- }
- }
-
- // add dead zone "virtual" cluster in SPD, if there is a cluster within
- // zwindow cm from the dead zone
- // This method assumes that fSPDdetzcentre is ordered from -z to +z
- if (i<2 && AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
- for (Float_t xdead = 0; xdead < AliITSRecoParam::GetSPDdetxlength(); xdead += (i+1.)*AliITSReconstructor::GetRecoParam()->GetXPassDeadZoneHits()) {
- Int_t lab[4] = {0,0,0,detector};
- Int_t info[3] = {0,0,i};
- Float_t q = 0.; // this identifies virtual clusters
- Float_t hit[6] = {xdead,
- 0.,
- static_cast<Float_t>(AliITSReconstructor::GetRecoParam()->GetSigmaXDeadZoneHit2()),
- static_cast<Float_t>(AliITSReconstructor::GetRecoParam()->GetSigmaZDeadZoneHit2()),
- q,
- 0.};
- Bool_t local = kTRUE;
- Double_t zwindow = AliITSReconstructor::GetRecoParam()->GetZWindowDeadZone();
- hit[1] = fSPDdetzcentre[0]+0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- hit[1] = fSPDdetzcentre[1]-0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- hit[1] = fSPDdetzcentre[1]+0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- hit[1] = fSPDdetzcentre[2]-0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- hit[1] = fSPDdetzcentre[2]+0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- hit[1] = fSPDdetzcentre[3]-0.5*AliITSRecoParam::GetSPDdetzlength();
- if (TMath::Abs(fgLayers[i].GetDetector(detector).GetZmax()-hit[1])<zwindow)
- fgLayers[i].InsertCluster(new AliITSRecPoint(lab,hit,info,local));
- }
- } // "virtual" clusters in SPD
-
- }
- //
- fgLayers[i].ResetRoad(); //road defined by the cluster density
- fgLayers[i].SortClusters();
- }
-
- // check whether we have to skip some layers
- SetForceSkippingOfLayer();
-
- return 0;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::UnloadClusters() {
- //--------------------------------------------------------------------
- //This function unloads ITS clusters
- //--------------------------------------------------------------------
- for (Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) fgLayers[i].ResetClusters();
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::FillClusterArray(TObjArray* array) const {
- //--------------------------------------------------------------------
- // Publishes all pointers to clusters known to the tracker into the
- // passed object array.
- // The ownership is not transfered - the caller is not expected to delete
- // the clusters.
- //--------------------------------------------------------------------
-
- for(Int_t i=0; i<AliITSgeomTGeo::GetNLayers(); i++) {
- for(Int_t icl=0; icl<fgLayers[i].GetNumberOfClusters(); icl++) {
- AliCluster *cl = (AliCluster*)fgLayers[i].GetCluster(icl);
- array->AddLast(cl);
- }
- }
-
- return;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(AliITStrackMI *t) {
- //--------------------------------------------------------------------
- // Correction for the material between the TPC and the ITS
- //--------------------------------------------------------------------
- if (t->GetX() > AliITSRecoParam::Getriw()) { // inward direction
- if (!t->PropagateToTGeo(AliITSRecoParam::Getriw(),1)) return 0;// TPC inner wall
- if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
- if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
- } else if (t->GetX() < AliITSRecoParam::Getrs()) { // outward direction
- if (!t->PropagateToTGeo(AliITSRecoParam::Getrs(),1)) return 0;// ITS screen
- if (!t->PropagateToTGeo(AliITSRecoParam::Getrcd(),1)) return 0;// TPC central drum
- if (!t->PropagateToTGeo(AliITSRecoParam::Getriw()+0.001,1)) return 0;// TPC inner wall
- } else {
- printf("CorrectForTPCtoITSDeadZoneMaterial: Track is already in the dead zone !\n");
- return 0;
- }
-
- return 1;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::Clusters2Tracks(AliESDEvent *event) {
- //--------------------------------------------------------------------
- // This functions reconstructs ITS tracks
- // The clusters must be already loaded !
- //--------------------------------------------------------------------
-
- AliDebug(2,Form("SKIPPING %d %d %d %d %d %d",ForceSkippingOfLayer(0),ForceSkippingOfLayer(1),ForceSkippingOfLayer(2),ForceSkippingOfLayer(3),ForceSkippingOfLayer(4),ForceSkippingOfLayer(5)));
-
- fTrackingPhase="Clusters2Tracks";
- //
- // RS
- fSelectBestMIP03 = kFALSE;//AliITSReconstructor::GetRecoParam()->GetSelectBestMIP03();
- fFlagFakes = AliITSReconstructor::GetRecoParam()->GetFlagFakes();
- fUseImproveKalman = AliITSReconstructor::GetRecoParam()->GetUseImproveKalman();
- //
- TObjArray itsTracks(15000);
- fOriginal.Clear();
- fEsd = event; // store pointer to the esd
-
- // temporary (for cosmics)
- if(event->GetVertex()) {
- TString title = event->GetVertex()->GetTitle();
- if(title.Contains("cosmics")) {
- Double_t xyz[3]={GetX(),GetY(),GetZ()};
- Double_t exyz[3]={0.1,0.1,0.1};
- SetVertex(xyz,exyz);
- }
- }
- // temporary
- Int_t noesd = 0;
- {/* Read ESD tracks */
- Int_t nentr=event->GetNumberOfTracks();
- noesd=nentr;
- // Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
- while (nentr--) {
- AliESDtrack *esd=event->GetTrack(nentr);
- // ---- for debugging:
- //if(TMath::Abs(esd->GetX()-83.65)<0.1) { FILE *f=fopen("tpc.dat","a"); fprintf(f,"%f %f %f %f %f %f\n",(Float_t)event->GetEventNumberInFile(),(Float_t)TMath::Abs(esd->GetLabel()),(Float_t)esd->GetX(),(Float_t)esd->GetY(),(Float_t)esd->GetZ(),(Float_t)esd->Pt()); fclose(f); }
-
- if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) continue;
- if (esd->GetStatus()&AliESDtrack::kTPCout) continue;
- if (esd->GetStatus()&AliESDtrack::kITSin) continue;
- if (esd->GetKinkIndex(0)>0) continue; //kink daughter
- AliITStrackMI *t = new AliITStrackMI(*esd);
- t->GetDZ(GetX(),GetY(),GetZ(),t->GetDP()); //I.B.
- Double_t vdist = TMath::Sqrt(t->GetD(0)*t->GetD(0)+t->GetD(1)*t->GetD(1));
-
- // write expected q
- t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
-
- if (esd->GetV0Index(0)>0 && t->GetD(0)<AliITSReconstructor::GetRecoParam()->GetMaxDforV0dghtrForProlongation()){
- //track - can be V0 according to TPC
- } else {
- if (TMath::Abs(t->GetD(0))>AliITSReconstructor::GetRecoParam()->GetMaxDForProlongation()) {
- delete t;
- continue;
- }
- if (TMath::Abs(vdist)>AliITSReconstructor::GetRecoParam()->GetMaxDZForProlongation()) {
- delete t;
- continue;
- }
- if (t->Pt()<AliITSReconstructor::GetRecoParam()->GetMinPtForProlongation()) {
- delete t;
- continue;
- }
- if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
- delete t;
- continue;
- }
- }
- t->SetReconstructed(kFALSE);
- itsTracks.AddLast(t);
- fOriginal.AddLast(t);
- }
- } /* End Read ESD tracks */
-
- itsTracks.Sort();
- fOriginal.Sort();
- Int_t nentr=itsTracks.GetEntriesFast();
- fTrackHypothesys.Expand(nentr);
- fBestHypothesys.Expand(nentr);
- MakeCoefficients(nentr);
- if(fUseTGeo==3 || fUseTGeo==4) MakeTrksMaterialLUT(event->GetNumberOfTracks());
- Int_t ntrk=0;
- // THE TWO TRACKING PASSES
- for (fPass=0; fPass<2; fPass++) {
- Int_t &constraint=fConstraint[fPass]; if (constraint<0) continue;
- for (fCurrentEsdTrack=0; fCurrentEsdTrack<nentr; fCurrentEsdTrack++) {
- AliITStrackMI *t=(AliITStrackMI*)itsTracks.UncheckedAt(fCurrentEsdTrack);
- if (t==0) continue; //this track has been already tracked
- //cout<<"========== "<<fPass<<" "<<fCurrentEsdTrack<<" =========\n";
- if (t->GetReconstructed()&&(t->GetNUsed()<1.5)) continue; //this track was already "succesfully" reconstructed
- Float_t dz[2]; t->GetDZ(GetX(),GetY(),GetZ(),dz); //I.B.
- if (fConstraint[fPass]) {
- if (TMath::Abs(dz[0])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint() ||
- TMath::Abs(dz[1])>AliITSReconstructor::GetRecoParam()->GetMaxDZToUseConstraint()) continue;
- }
-
- Int_t tpcLabel=t->GetLabel(); //save the TPC track label
- AliDebug(2,Form("LABEL %d pass %d",tpcLabel,fPass));
- fI = 6;
- ResetTrackToFollow(*t);
- ResetBestTrack();
-
- FollowProlongationTree(t,fCurrentEsdTrack,fConstraint[fPass]);
-
-
- SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
- //
- AliITStrackMI *besttrack = GetBestHypothesys(fCurrentEsdTrack,t,15);
- if (!besttrack) continue;
- besttrack->SetLabel(tpcLabel);
- // besttrack->CookdEdx();
- CookdEdx(besttrack);
- besttrack->SetFakeRatio(1.);
- CookLabel(besttrack,0.); //For comparison only
- UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- t->SetWinner(besttrack);
-
- if (fConstraint[fPass]&&(!besttrack->IsGoldPrimary())) continue; //to be tracked also without vertex constrain
-
- t->SetReconstructed(kTRUE);
- ntrk++;
- AliDebug(2,Form("TRACK! (label %d) ncls %d",besttrack->GetLabel(),besttrack->GetNumberOfClusters()));
- }
- GetBestHypothesysMIP(itsTracks);
- } // end loop on the two tracking passes
- //
- if (fFlagFakes) FlagFakes(itsTracks);
- //
- if(event->GetNumberOfV0s()>0) AliITSV0Finder::UpdateTPCV0(event,this);
- if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::FindV02(event,this);
- fAfterV0 = kTRUE;
- //
- itsTracks.Clear();
- //
- Int_t entries = fTrackHypothesys.GetEntriesFast();
- for (Int_t ientry=0; ientry<entries; ientry++) {
- TObjArray * array =(TObjArray*)fTrackHypothesys.At(ientry);
- if (array) array->Delete();
- delete fTrackHypothesys.RemoveAt(ientry);
- }
-
- fTrackHypothesys.Delete();
- entries = fBestHypothesys.GetEntriesFast();
- for (Int_t ientry=0; ientry<entries; ientry++) {
- TObjArray * array =(TObjArray*)fBestHypothesys.At(ientry);
- if (array) array->Delete();
- delete fBestHypothesys.RemoveAt(ientry);
- }
- fBestHypothesys.Delete();
- fOriginal.Clear();
- delete [] fCoefficients;
- fCoefficients=0;
- DeleteTrksMaterialLUT();
-
- AliInfo(Form("Number of prolonged tracks: %d out of %d ESD tracks",ntrk,noesd));
-
- fTrackingPhase="Default";
-
- return 0;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::PropagateBack(AliESDEvent *event) {
- //--------------------------------------------------------------------
- // This functions propagates reconstructed ITS tracks back
- // The clusters must be loaded !
- //--------------------------------------------------------------------
- fTrackingPhase="PropagateBack";
- Int_t nentr=event->GetNumberOfTracks();
- // Info("PropagateBack", "Number of ESD tracks: %d\n", nentr);
- double bz0 = GetBz();
- const double kWatchStep=10.; // for larger steps watch arc vs segment difference
- //
- Int_t ntrk=0;
- for (Int_t i=0; i<nentr; i++) {
- AliESDtrack *esd=event->GetTrack(i);
-
- // Start time integral and add distance from current position to vertex
- if (esd->GetStatus()&AliESDtrack::kITSout) continue;
- AliITStrackMI t(*esd);
- Double_t xyzTrk[3],xyzVtx[3]={GetX(),GetY(),GetZ()};
- t.GetXYZ(xyzTrk);
- Double_t dst2 = 0.;
- {
- double dxs = xyzTrk[0] - xyzVtx[0];
- double dys = xyzTrk[1] - xyzVtx[1];
- double dzs = xyzTrk[2] - xyzVtx[2];
- // RS: for large segment steps d use approximation of cicrular arc s by
- // s = 2R*asin(d/2R) = d/p asin(p) \approx d/p (p + 1/6 p^3) = d (1+1/6 p^2)
- // where R is the track radius, p = d/2R = 2C*d (C is the abs curvature)
- // Hence s^2/d^2 = (1+1/6 p^2)^2
- dst2 = dxs*dxs + dys*dys;
- if (dst2 > kWatchStep*kWatchStep) { // correct circular part for arc/segment factor
- double crv = TMath::Abs(esd->GetC(bz0));
- double fcarc = 1.+crv*crv*dst2/6.;
- dst2 *= fcarc*fcarc;
- }
- dst2 += dzs*dzs;
- }
- t.StartTimeIntegral();
- t.AddTimeStep(TMath::Sqrt(dst2));
- //
- // transfer the time integral to ESD track
- esd->SetStatus(AliESDtrack::kTIME);
- Double_t times[AliPID::kSPECIESC];
- t.GetIntegratedTimes(times,AliPID::kSPECIESC);
- esd->SetIntegratedTimes(times);
- esd->SetIntegratedLength(t.GetIntegratedLength());
- //
- if ((esd->GetStatus()&AliESDtrack::kITSin)==0) continue;
-
- t.SetExpQ(TMath::Max(0.8*t.GetESDtrack()->GetTPCsignal(),30.));
- ResetTrackToFollow(t);
- //
- fTrackToFollow.ResetCovariance(10.); fTrackToFollow.ResetClusters();
- if (RefitAt(AliITSRecoParam::GetrInsideITSscreen(),&fTrackToFollow,&t)) {
- if (!CorrectForTPCtoITSDeadZoneMaterial(&fTrackToFollow)) continue;
- // fTrackToFollow.SetLabel(t.GetLabel()); // why do we neet this
- //fTrackToFollow.CookdEdx();
- CookLabel(&fTrackToFollow,0.); //For comparison only // why do we need this?
- fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSout);
- //UseClusters(&fTrackToFollow);
- ntrk++;
- }
- }
-
- AliInfo(Form("Number of back propagated ITS tracks: %d out of %d ESD tracks",ntrk,nentr));
-
- fTrackingPhase="Default";
-
- return 0;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::RefitInward(AliESDEvent *event) {
- //--------------------------------------------------------------------
- // This functions refits ITS tracks using the
- // "inward propagated" TPC tracks
- // The clusters must be loaded !
- //--------------------------------------------------------------------
- fTrackingPhase="RefitInward";
-
- if(AliITSReconstructor::GetRecoParam()->GetFindV0s()) AliITSV0Finder::RefitV02(event,this);
-
- Bool_t doExtra=AliITSReconstructor::GetRecoParam()->GetSearchForExtraClusters();
- if(!doExtra) AliDebug(2,"Do not search for extra clusters");
-
- Int_t nentr=event->GetNumberOfTracks();
- // Info("RefitInward", "Number of ESD tracks: %d\n", nentr);
-
- // only for PlaneEff and in case of SPD (for FO studies)
- if( AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
- AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0 &&
- AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()<2) {
- for (UInt_t i=0; i<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip; i++) fSPDChipIntPlaneEff[i]=kFALSE;
- }
-
- Int_t ntrk=0;
- for (Int_t i=0; i<nentr; i++) {
- AliESDtrack *esd=event->GetTrack(i);
-
- if ((esd->GetStatus()&AliESDtrack::kITSout) == 0) continue;
- if (esd->GetStatus()&AliESDtrack::kITSrefit) continue;
- if (esd->GetStatus()&AliESDtrack::kTPCout)
- if ((esd->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
-
- AliITStrackMI *t = new AliITStrackMI(*esd);
-
- t->SetExpQ(TMath::Max(0.8*t->GetESDtrack()->GetTPCsignal(),30.));
- if (!CorrectForTPCtoITSDeadZoneMaterial(t)) {
- delete t;
- continue;
- }
-
- ResetTrackToFollow(*t);
- fTrackToFollow.ResetClusters();
-
- // ITS standalone tracks
- if ((esd->GetStatus()&AliESDtrack::kTPCin)==0) {
- fTrackToFollow.ResetCovariance(10.);
- // protection for loopers that can have parameters screwed up
- if(TMath::Abs(fTrackToFollow.GetY())>1000. ||
- TMath::Abs(fTrackToFollow.GetZ())>1000.) {
- delete t;
- continue;
- }
- }
-
- //Refitting...
- Bool_t pe=(AliITSReconstructor::GetRecoParam()->GetComputePlaneEff() &&
- AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()>=0);
-
- AliDebug(2,Form("Refit LABEL %d %d",t->GetLabel(),t->GetNumberOfClusters()));
- if (RefitAt(AliITSRecoParam::GetrInsideSPD1(),&fTrackToFollow,t,doExtra,pe)) {
- AliDebug(2," refit OK");
- fTrackToFollow.SetLabel(t->GetLabel());
- // fTrackToFollow.CookdEdx();
- CookdEdx(&fTrackToFollow);
-
- CookLabel(&fTrackToFollow,0.0); //For comparison only // RS why do we need this?
-
- //The beam pipe
- if (CorrectForPipeMaterial(&fTrackToFollow,"inward")) {
- fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
- AliESDtrack *esdTrack =fTrackToFollow.GetESDtrack();
- //printf(" %d\n",esdTrack->GetITSModuleIndex(0));
- //esdTrack->UpdateTrackParams(&fTrackToFollow,AliESDtrack::kITSrefit); //original line
- Double_t r[3]={0.,0.,0.};
- Double_t maxD=3.;
- esdTrack->RelateToVertex(event->GetVertex(),GetBz(r),maxD);
- ntrk++;
- }
- }
- delete t;
- }
-
- AliInfo(Form("Number of refitted tracks: %d out of %d ESD tracks",ntrk,nentr));
-
- fTrackingPhase="Default";
-
- return 0;
-}
-//------------------------------------------------------------------------
-AliCluster *AliITStrackerMI::GetCluster(Int_t index) const {
- //--------------------------------------------------------------------
- // Return pointer to a given cluster
- //--------------------------------------------------------------------
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- return fgLayers[l].GetCluster(c);
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::GetTrackPoint(Int_t index, AliTrackPoint& p) const {
- //--------------------------------------------------------------------
- // Get track space point with index i
- //--------------------------------------------------------------------
-
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
- Int_t idet = cl->GetDetectorIndex();
-
- Float_t xyz[3];
- Float_t cov[6];
- cl->GetGlobalXYZ(xyz);
- cl->GetGlobalCov(cov);
- p.SetXYZ(xyz, cov);
- p.SetCharge(cl->GetQ());
- p.SetDriftTime(cl->GetDriftTime());
- p.SetChargeRatio(cl->GetChargeRatio());
- p.SetClusterType(cl->GetClusterType());
- AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
- switch (l) {
- case 0:
- iLayer = AliGeomManager::kSPD1;
- break;
- case 1:
- iLayer = AliGeomManager::kSPD2;
- break;
- case 2:
- iLayer = AliGeomManager::kSDD1;
- break;
- case 3:
- iLayer = AliGeomManager::kSDD2;
- break;
- case 4:
- iLayer = AliGeomManager::kSSD1;
- break;
- case 5:
- iLayer = AliGeomManager::kSSD2;
- break;
- default:
- AliWarning(Form("Wrong layer index in ITS (%d) !",l));
- break;
- };
- UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
- p.SetVolumeID((UShort_t)volid);
- return kTRUE;
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::GetTrackPointTrackingError(Int_t index,
- AliTrackPoint& p, const AliESDtrack *t) {
- //--------------------------------------------------------------------
- // Get track space point with index i
- // (assign error estimated during the tracking)
- //--------------------------------------------------------------------
-
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- const AliITSRecPoint *cl = fgLayers[l].GetCluster(c);
- Int_t idet = cl->GetDetectorIndex();
-
- const AliITSdetector &det=fgLayers[l].GetDetector(idet);
-
- // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
- Float_t detxy[2];
- detxy[0] = det.GetR()*TMath::Cos(det.GetPhi());
- detxy[1] = det.GetR()*TMath::Sin(det.GetPhi());
- Double_t alpha = t->GetAlpha();
- Double_t xdetintrackframe = detxy[0]*TMath::Cos(alpha)+detxy[1]*TMath::Sin(alpha);
- Float_t phi = TMath::ASin(t->GetSnpAt(xdetintrackframe+cl->GetX(),GetBz()));
- phi += alpha-det.GetPhi();
- Float_t tgphi = TMath::Tan(phi);
-
- Float_t tgl = t->GetTgl(); // tgl about const along track
- Float_t expQ = TMath::Max(0.8*t->GetTPCsignal(),30.);
-
- Float_t errtrky,errtrkz,covyz;
- Bool_t addMisalErr=kFALSE;
- AliITSClusterParam::GetError(l,cl,tgl,tgphi,expQ,errtrky,errtrkz,covyz,addMisalErr);
-
- Float_t xyz[3];
- Float_t cov[6];
- cl->GetGlobalXYZ(xyz);
- // cl->GetGlobalCov(cov);
- Float_t pos[3] = {0.,0.,0.};
- AliCluster tmpcl((UShort_t)cl->GetVolumeId(),pos[0],pos[1],pos[2],errtrky*errtrky,errtrkz*errtrkz,covyz);
- tmpcl.GetGlobalCov(cov);
-
- p.SetXYZ(xyz, cov);
- p.SetCharge(cl->GetQ());
- p.SetDriftTime(cl->GetDriftTime());
- p.SetChargeRatio(cl->GetChargeRatio());
- p.SetClusterType(cl->GetClusterType());
-
- AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
- switch (l) {
- case 0:
- iLayer = AliGeomManager::kSPD1;
- break;
- case 1:
- iLayer = AliGeomManager::kSPD2;
- break;
- case 2:
- iLayer = AliGeomManager::kSDD1;
- break;
- case 3:
- iLayer = AliGeomManager::kSDD2;
- break;
- case 4:
- iLayer = AliGeomManager::kSSD1;
- break;
- case 5:
- iLayer = AliGeomManager::kSSD2;
- break;
- default:
- AliWarning(Form("Wrong layer index in ITS (%d) !",l));
- break;
- };
- UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,idet);
-
- p.SetVolumeID((UShort_t)volid);
- return kTRUE;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
-{
- //--------------------------------------------------------------------
- // Follow prolongation tree
- //--------------------------------------------------------------------
- //
- Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
- Double_t ersVtx[]={GetSigmaX(),GetSigmaY(),GetSigmaZ()};
-
-
- AliESDtrack * esd = otrack->GetESDtrack();
- if (esd->GetV0Index(0)>0) {
- // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
- // mapping of ESD track is different as ITS track in Containers
- // Need something more stable
- // Indexes are set back again to the ESD track indexes in UpdateTPCV0
- for (Int_t i=0;i<3;i++){
- Int_t index = esd->GetV0Index(i);
- if (index==0) break;
- AliESDv0 * vertex = fEsd->GetV0(index);
- if (vertex->GetStatus()<0) continue; // rejected V0
- //
- if (esd->GetSign()>0) {
- vertex->SetIndex(0,esdindex);
- } else {
- vertex->SetIndex(1,esdindex);
- }
- }
- }
- TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
- if (!bestarray){
- bestarray = new TObjArray(5);
- bestarray->SetOwner();
- fBestHypothesys.AddAt(bestarray,esdindex);
- }
-
- //
- //setup tree of the prolongations
- //
- const int kMaxTr = 100; //RS
- static AliITStrackMI tracks[7][kMaxTr];
- AliITStrackMI *currenttrack;
- static AliITStrackMI currenttrack1;
- static AliITStrackMI currenttrack2;
- static AliITStrackMI backuptrack;
- Int_t ntracks[7];
- Int_t nindexes[7][kMaxTr];
- Float_t normalizedchi2[kMaxTr];
- for (Int_t ilayer=0;ilayer<6;ilayer++) ntracks[ilayer]=0;
- otrack->SetNSkipped(0);
- new (&(tracks[6][0])) AliITStrackMI(*otrack);
- ntracks[6]=1;
- for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
- Int_t modstatus = 1; // found
- Float_t xloc,zloc;
- //
- //
- // follow prolongations
- for (Int_t ilayer=5; ilayer>=0; ilayer--) {
- AliDebug(2,Form("FollowProlongationTree: layer %d",ilayer));
- fI = ilayer;
- //
- AliITSlayer &layer=fgLayers[ilayer];
- Double_t r = layer.GetR();
- ntracks[ilayer]=0;
- //
- //
- Int_t nskipped=0;
- Float_t nused =0;
- for (Int_t itrack =0; itrack<ntracks[ilayer+1]; itrack++) {
- // printf("LR %d Tr:%d NSeeds: %d\n",ilayer,itrack,ntracks[ilayer+1]);
- //set current track
- if (ntracks[ilayer]>=kMaxTr) break;
- if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0) nskipped++;
- if (tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2.) nused++;
- if (ntracks[ilayer]>15+ilayer){
- if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNSkipped()>0 && nskipped>4+ilayer) continue;
- if (itrack>1&&tracks[ilayer+1][nindexes[ilayer+1][itrack]].GetNUsed()>2. && nused>3) continue;
- }
-
- new(¤ttrack1) AliITStrackMI(tracks[ilayer+1][nindexes[ilayer+1][itrack]]);
-
- // material between SSD and SDD, SDD and SPD
- if (ilayer==3)
- if(!CorrectForShieldMaterial(¤ttrack1,"SDD","inward")) continue;
- if (ilayer==1)
- if(!CorrectForShieldMaterial(¤ttrack1,"SPD","inward")) continue;
-
- // detector number
- Double_t phi,z;
- if (!currenttrack1.GetPhiZat(r,phi,z)) continue;
- Int_t idet=layer.FindDetectorIndex(phi,z);
-
- Double_t trackGlobXYZ1[3];
- if (!currenttrack1.GetXYZ(trackGlobXYZ1)) continue;
-
- // Get the budget to the primary vertex for the current track being prolonged
- Double_t budgetToPrimVertex = 0;
- double xMSLrs[9],x2X0MSLrs[9]; // needed for ImproveKalman
- int nMSLrs = 0;
- //
- if (fUseImproveKalman) nMSLrs = GetEffectiveThicknessLbyL(xMSLrs,x2X0MSLrs);
- else budgetToPrimVertex = GetEffectiveThickness();
- //
- // check if we allow a prolongation without point
- Int_t skip = CheckSkipLayer(¤ttrack1,ilayer,idet);
- if (skip) {
- AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
- // propagate to the layer radius
- Double_t xToGo; if (!vtrack->GetLocalXat(r,xToGo)) continue;
- if(!vtrack->Propagate(xToGo)) continue;
- // apply correction for material of the current layer
- CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
- vtrack->SetNDeadZone(vtrack->GetNDeadZone()+1);
- vtrack->SetDeadZoneProbability(ilayer,1.); // no penalty for missing cluster
- vtrack->SetClIndex(ilayer,-1);
- modstatus = (skip==1 ? 3 : 4); // skipped : out in z
- if(LocalModuleCoord(ilayer,idet,vtrack,xloc,zloc)) { // local module coords
- vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
- }
- if(constrain && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
- fUseImproveKalman ?
- vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
- vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
- }
- ntracks[ilayer]++;
- continue;
- }
-
- // track outside layer acceptance in z
- if (idet<0) continue;
-
- //propagate to the intersection with the detector plane
- const AliITSdetector &det=layer.GetDetector(idet);
- new(¤ttrack2) AliITStrackMI(currenttrack1);
- if (!currenttrack1.Propagate(det.GetPhi(),det.GetR())) continue;
- if (!currenttrack2.Propagate(det.GetPhi(),det.GetR())) continue;
- currenttrack1.SetDetectorIndex(idet);
- currenttrack2.SetDetectorIndex(idet);
- if(!LocalModuleCoord(ilayer,idet,¤ttrack1,xloc,zloc)) continue; // local module coords
-
- //***************
- // DEFINITION OF SEARCH ROAD AND CLUSTERS SELECTION
- //
- // road in global (rphi,z) [i.e. in tracking ref. system]
- Double_t zmin,zmax,ymin,ymax;
- if (!ComputeRoad(¤ttrack1,ilayer,idet,zmin,zmax,ymin,ymax)) continue;
-
- // select clusters in road
- layer.SelectClusters(zmin,zmax,ymin,ymax);
- //********************
-
- // Define criteria for track-cluster association
- Double_t msz = currenttrack1.GetSigmaZ2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
- Double_t msy = currenttrack1.GetSigmaY2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
- if (constrain) {
- msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
- msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
- } else {
- msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
- msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
- }
- msz = 1./msz; // 1/RoadZ^2
- msy = 1./msy; // 1/RoadY^2
-
- //
- //
- // LOOP OVER ALL POSSIBLE TRACK PROLONGATIONS ON THIS LAYER
- //
- const AliITSRecPoint *cl=0;
- Int_t clidx=-1;
- Double_t chi2trkcl=AliITSReconstructor::GetRecoParam()->GetMaxChi2(); // init with big value
- Bool_t deadzoneSPD=kFALSE;
- currenttrack = ¤ttrack1;
-
- // check if the road contains a dead zone
- Bool_t noClusters = kFALSE;
- if (!layer.GetNextCluster(clidx,kTRUE)) noClusters=kTRUE;
- if (noClusters) AliDebug(2,"no clusters in road");
- Double_t dz=0.5*(zmax-zmin);
- Double_t dy=0.5*(ymax-ymin);
- Int_t dead = CheckDeadZone(¤ttrack1,ilayer,idet,dz,dy,noClusters);
- if(dead) AliDebug(2,Form("DEAD (%d)\n",dead));
- // create a prolongation without clusters (check also if there are no clusters in the road)
- if (dead ||
- (noClusters &&
- AliITSReconstructor::GetRecoParam()->GetAllowProlongationWithEmptyRoad())) {
- AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
- updatetrack->SetClIndex(ilayer,-1);
- if (dead==0) {
- modstatus = 5; // no cls in road
- } else if (dead==1) {
- modstatus = 7; // holes in z in SPD
- } else if (dead==2 || dead==3 || dead==4) {
- modstatus = 2; // dead from OCDB
- }
- updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
- // apply correction for material of the current layer
- CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
- if (constrain) { // apply vertex constrain
- updatetrack->SetConstrain(constrain);
- Bool_t isPrim = kTRUE;
- if (ilayer<4) { // check that it's close to the vertex
- updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
- if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
- AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
- TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
- AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
- }
- if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
- fUseImproveKalman ?
- updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
- updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
- }
- }
- updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
- if (dead) {
- if (dead==1) { // dead zone at z=0,+-7cm in SPD
- updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
- deadzoneSPD=kTRUE;
- } else if (dead==2 || dead==3) { // dead module or chip from OCDB
- updatetrack->SetDeadZoneProbability(ilayer,1.);
- } else if (dead==4) { // at least a single dead channel from OCDB
- updatetrack->SetDeadZoneProbability(ilayer,0.);
- }
- }
- ntracks[ilayer]++;
- }
-
- clidx=-1;
- // loop over clusters in the road
- while ((cl=layer.GetNextCluster(clidx))!=0) {
- if (ntracks[ilayer]>int(0.95*kMaxTr)) break; //space for skipped clusters
- Bool_t changedet =kFALSE;
- if (TMath::Abs(cl->GetQ())<1.e-13 && deadzoneSPD==kTRUE) continue;
- Int_t idetc=cl->GetDetectorIndex();
-
- if (currenttrack->GetDetectorIndex()==idetc) { // track already on the cluster's detector
- // take into account misalignment (bring track to real detector plane)
- Double_t xTrOrig = currenttrack->GetX();
- if (!currenttrack->Propagate(xTrOrig+cl->GetX())) continue;
- // a first cut on track-cluster distance
- if ( (currenttrack->GetZ()-cl->GetZ())*(currenttrack->GetZ()-cl->GetZ())*msz +
- (currenttrack->GetY()-cl->GetY())*(currenttrack->GetY()-cl->GetY())*msy > 1. )
- { // cluster not associated to track
- AliDebug(2,"not associated");
- // MvL: added here as well
- // bring track back to ideal detector plane
- currenttrack->Propagate(xTrOrig);
- continue;
- }
- // bring track back to ideal detector plane
- if (!currenttrack->Propagate(xTrOrig)) continue;
- } else { // have to move track to cluster's detector
- const AliITSdetector &detc=layer.GetDetector(idetc);
- // a first cut on track-cluster distance
- Double_t y;
- if (!currenttrack2.GetProlongationFast(detc.GetPhi(),detc.GetR()+cl->GetX(),y,z)) continue;
- if ( (z-cl->GetZ())*(z-cl->GetZ())*msz +
- (y-cl->GetY())*(y-cl->GetY())*msy > 1. )
- continue; // cluster not associated to track
- //
- new (&backuptrack) AliITStrackMI(currenttrack2);
- changedet = kTRUE;
- currenttrack =¤ttrack2;
- if (!currenttrack->Propagate(detc.GetPhi(),detc.GetR())) {
- new (currenttrack) AliITStrackMI(backuptrack);
- changedet = kFALSE;
- continue;
- }
- currenttrack->SetDetectorIndex(idetc);
- // Get again the budget to the primary vertex
- // for the current track being prolonged, if had to change detector
- //budgetToPrimVertex = GetEffectiveThickness();// not needed at the moment because anyway we take a mean material for this correction
- }
-
- // calculate track-clusters chi2
- chi2trkcl = GetPredictedChi2MI(currenttrack,cl,ilayer);
- // chi2 cut
- AliDebug(2,Form("chi2 %f max %f",chi2trkcl,AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)));
- if (chi2trkcl < AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) {
- if (TMath::Abs(cl->GetQ())<1.e-13) deadzoneSPD=kTRUE; // only 1 prolongation with virtual cluster
- if (ntracks[ilayer]>=kMaxTr) continue;
- AliITStrackMI * updatetrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(*currenttrack);
- updatetrack->SetClIndex(ilayer,-1);
- if (changedet) new (¤ttrack2) AliITStrackMI(backuptrack);
-
- if (TMath::Abs(cl->GetQ())>1.e-13) { // real cluster
- if (!UpdateMI(updatetrack,cl,chi2trkcl,(ilayer<<28)+clidx)) {
- AliDebug(2,"update failed");
- continue;
- }
- updatetrack->SetSampledEdx(cl->GetQ(),ilayer-2);
- modstatus = 1; // found
- } else { // virtual cluster in dead zone
- updatetrack->SetNDeadZone(updatetrack->GetNDeadZone()+1);
- updatetrack->SetDeadZoneProbability(ilayer,GetSPDDeadZoneProbability(updatetrack->GetZ(),TMath::Sqrt(updatetrack->GetSigmaZ2())));
- modstatus = 7; // holes in z in SPD
- }
-
- if (changedet) {
- Float_t xlocnewdet,zlocnewdet;
- if(LocalModuleCoord(ilayer,idet,updatetrack,xlocnewdet,zlocnewdet)) { // local module coords
- updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xlocnewdet,zlocnewdet);
- }
- } else {
- updatetrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
- }
- if (cl->IsUsed()) updatetrack->IncrementNUsed();
-
- // apply correction for material of the current layer
- CorrectForLayerMaterial(updatetrack,ilayer,trackGlobXYZ1,"inward");
-
- if (constrain) { // apply vertex constrain
- updatetrack->SetConstrain(constrain);
- Bool_t isPrim = kTRUE;
- if (ilayer<4) { // check that it's close to the vertex
- updatetrack->GetDZ(GetX(),GetY(),GetZ(),updatetrack->GetDP()); //I.B.
- if (TMath::Abs(updatetrack->GetD(0)/(1.+ilayer)) > // y
- AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk() ||
- TMath::Abs(updatetrack->GetD(1)/(1.+ilayer)) > // z
- AliITSReconstructor::GetRecoParam()->GetMaxDZforPrimTrk()) isPrim=kFALSE;
- }
- if (isPrim && AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
- fUseImproveKalman ?
- updatetrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
- updatetrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
- }
- } //apply vertex constrain
- ntracks[ilayer]++;
- } // create new hypothesis
- else {
- AliDebug(2,"chi2 too large");
- }
-
- } // loop over possible prolongations
-
- // allow one prolongation without clusters
- if (constrain && itrack<=1 && TMath::Abs(currenttrack1.GetNSkipped())<1.e-13 && deadzoneSPD==kFALSE && ntracks[ilayer]<kMaxTr) {
- AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
- // apply correction for material of the current layer
- CorrectForLayerMaterial(vtrack,ilayer,trackGlobXYZ1,"inward");
- vtrack->SetClIndex(ilayer,-1);
- modstatus = 3; // skipped
- vtrack->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
- if(AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
- fUseImproveKalman ?
- vtrack->ImproveKalman(xyzVtx,ersVtx,xMSLrs,x2X0MSLrs,nMSLrs) :
- vtrack->Improve(budgetToPrimVertex,xyzVtx,ersVtx);
- }
- vtrack->IncrementNSkipped();
- ntracks[ilayer]++;
- }
-
-
- } // loop over tracks in layer ilayer+1
-
- //loop over track candidates for the current layer
- //
- //
- Int_t accepted=0;
-
- Int_t golden=0;
- for (Int_t itrack=0;itrack<ntracks[ilayer];itrack++){
- normalizedchi2[itrack] = NormalizedChi2(&tracks[ilayer][itrack],ilayer);
- if (normalizedchi2[itrack] <
- AliITSReconstructor::GetRecoParam()->GetMaxNormChi2ForGolden(ilayer)) golden++;
- if (ilayer>4) {
- accepted++;
- } else {
- if (constrain) { // constrain
- if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2C(ilayer)+1)
- accepted++;
- } else { // !constrain
- if (normalizedchi2[itrack]<AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonC(ilayer)+1)
- accepted++;
- }
- }
- }
- // sort tracks by increasing normalized chi2
- TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
- ntracks[ilayer] = TMath::Min(accepted,7+2*ilayer);
- if (ntracks[ilayer]<golden+2+ilayer) ntracks[ilayer]=TMath::Min(golden+2+ilayer,accepted);
- // if (ntracks[ilayer]>90) ntracks[ilayer]=90;
- if (ntracks[ilayer]>int(kMaxTr*0.9)) ntracks[ilayer]=int(kMaxTr*0.9);
- } // end loop over layers
-
-
- //
- // Now select tracks to be kept
- //
- Int_t max = constrain ? 20 : 5;
-
- // tracks that reach layer 0 (SPD inner)
- for (Int_t i=0; i<TMath::Min(max,ntracks[0]); i++) {
- AliITStrackMI & track= tracks[0][nindexes[0][i]];
- if (track.GetNumberOfClusters()<2) continue;
- if (!constrain && track.GetNormChi2(0) >
- AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) {
- continue;
- }
- AddTrackHypothesys(new AliITStrackMI(track), esdindex);
- }
-
- // tracks that reach layer 1 (SPD outer)
- for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
- AliITStrackMI & track= tracks[1][nindexes[1][i]];
- if (track.GetNumberOfClusters()<4) continue;
- if (!constrain && track.GetNormChi2(1) >
- AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
- if (constrain) track.IncrementNSkipped();
- if (!constrain) {
- track.SetD(0,track.GetD(GetX(),GetY()));
- track.SetNSkipped(track.GetNSkipped()+4./(4.+8.*TMath::Abs(track.GetD(0))));
- if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
- track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
- }
- }
- AddTrackHypothesys(new AliITStrackMI(track), esdindex);
- }
-
- // tracks that reach layer 2 (SDD inner), only during non-constrained pass
- if (!constrain){
- for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
- AliITStrackMI & track= tracks[2][nindexes[2][i]];
- if (track.GetNumberOfClusters()<3) continue;
- if (track.GetNormChi2(2) >
- AliITSReconstructor::GetRecoParam()->GetMaxNormChi2NonCForHypothesis()) continue;
- track.SetD(0,track.GetD(GetX(),GetY()));
- track.SetNSkipped(track.GetNSkipped()+7./(7.+8.*TMath::Abs(track.GetD(0))));
- if (track.GetNumberOfClusters()+track.GetNDeadZone()+track.GetNSkipped()>6) {
- track.SetNSkipped(6-track.GetNumberOfClusters()+track.GetNDeadZone());
- }
- AddTrackHypothesys(new AliITStrackMI(track), esdindex);
- }
- }
-
- if (!constrain) {
- //
- // register best track of each layer - important for V0 finder
- //
- for (Int_t ilayer=0;ilayer<5;ilayer++){
- if (ntracks[ilayer]==0) continue;
- AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
- if (track.GetNumberOfClusters()<1) continue;
- CookLabel(&track,0);
- bestarray->AddAt(new AliITStrackMI(track),ilayer);
- }
- }
- //
- // update TPC V0 information
- //
- if (otrack->GetESDtrack()->GetV0Index(0)>0){
- Float_t fprimvertex[3]={static_cast<Float_t>(GetX()),static_cast<Float_t>(GetY()),static_cast<Float_t>(GetZ())};
- for (Int_t i=0;i<3;i++){
- Int_t index = otrack->GetESDtrack()->GetV0Index(i);
- if (index==0) break;
- AliV0 *vertex = (AliV0*)fEsd->GetV0(index);
- if (vertex->GetStatus()<0) continue; // rejected V0
- //
- if (otrack->GetSign()>0) {
- vertex->SetIndex(0,esdindex);
- }
- else{
- vertex->SetIndex(1,esdindex);
- }
- //find nearest layer with track info
- Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
- Int_t nearestold = GetNearestLayer(xrp); //I.B.
- Int_t nearest = nearestold;
- for (Int_t ilayer =nearest;ilayer<7;ilayer++){
- if (ntracks[nearest]==0){
- nearest = ilayer;
- }
- }
- //
- AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
- if (nearestold<5&&nearest<5){
- Bool_t accept = track.GetNormChi2(nearest)<10;
- if (accept){
- if (track.GetSign()>0) {
- vertex->SetParamP(track);
- vertex->Update(fprimvertex);
- //vertex->SetIndex(0,track.fESDtrack->GetID());
- if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
- }else{
- vertex->SetParamN(track);
- vertex->Update(fprimvertex);
- //vertex->SetIndex(1,track.fESDtrack->GetID());
- if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
- }
- vertex->SetStatus(vertex->GetStatus()+1);
- }else{
- //vertex->SetStatus(-2); // reject V0 - not enough clusters
- }
- }
- }
- }
-
-}
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSlayer & AliITStrackerMI::GetLayer(Int_t layer) const
-{
- //--------------------------------------------------------------------
- //
- //
- return fgLayers[layer];
-}
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSlayer::AliITSlayer():
-fR(0),
-fPhiOffset(0),
-fNladders(0),
-fZOffset(0),
-fNdetectors(0),
-fDetectors(0),
-fN(0),
-fDy5(0),
-fDy10(0),
-fDy20(0),
-fClustersCs(0),
-fClusterIndexCs(0),
-fYcs(0),
-fZcs(0),
-fNcs(0),
-fCurrentSlice(-1),
-fZmin(0),
-fZmax(0),
-fYmin(0),
-fYmax(0),
-fI(0),
-fImax(0),
-fSkip(0),
-fAccepted(0),
-fRoad(0),
-fMaxSigmaClY(0),
-fMaxSigmaClZ(0),
-fNMaxSigmaCl(3)
-{
- //--------------------------------------------------------------------
- //default AliITSlayer constructor
- //--------------------------------------------------------------------
- for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
- fClusterWeight[i]=0;
- fClusterTracks[0][i]=-1;
- fClusterTracks[1][i]=-1;
- fClusterTracks[2][i]=-1;
- fClusterTracks[3][i]=-1;
- fY[i]=0;
- fZ[i]=0;
- }
- fYB[0]=0;
- fYB[1]=0;
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
- for (Int_t j1=0; j1<6; j1++) {
- fClusters5[j1][j]=0;
- fClusterIndex5[j1][j]=-1;
- fY5[j1][j]=0;
- fZ5[j1][j]=0;
- fN5[j1]=0;
- fBy5[j1][0]=0;
- fBy5[j1][1]=0;
- }
- }
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
- for (Int_t j1=0; j1<11; j1++) {
- fClusters10[j1][j]=0;
- fClusterIndex10[j1][j]=-1;
- fY10[j1][j]=0;
- fZ10[j1][j]=0;
- fN10[j1]=0;
- fBy10[j1][0]=0;
- fBy10[j1][1]=0;
- }
- }
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
- for (Int_t j1=0; j1<21; j1++) {
- fClusters20[j1][j]=0;
- fClusterIndex20[j1][j]=-1;
- fY20[j1][j]=0;
- fZ20[j1][j]=0;
- fN20[j1]=0;
- fBy20[j1][0]=0;
- fBy20[j1][1]=0;
- }
- }
- for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
- fClusters[i]=NULL;
- fClusterIndex[i]=0;
- }
-}
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSlayer::
-AliITSlayer(Double_t r,Double_t p,Double_t z,Int_t nl,Int_t nd):
-fR(r),
-fPhiOffset(p),
-fNladders(nl),
-fZOffset(z),
-fNdetectors(nd),
-fDetectors(0),
-fN(0),
-fDy5(0),
-fDy10(0),
-fDy20(0),
-fClustersCs(0),
-fClusterIndexCs(0),
-fYcs(0),
-fZcs(0),
-fNcs(0),
-fCurrentSlice(-1),
-fZmin(0),
-fZmax(0),
-fYmin(0),
-fYmax(0),
-fI(0),
-fImax(0),
-fSkip(0),
-fAccepted(0),
-fRoad(0),
-fMaxSigmaClY(0),
-fMaxSigmaClZ(0),
-fNMaxSigmaCl(3) {
- //--------------------------------------------------------------------
- //main AliITSlayer constructor
- //--------------------------------------------------------------------
- fDetectors=new AliITSdetector[fNladders*fNdetectors];
- fRoad=2*fR*TMath::Sqrt(TMath::Pi()/1.);//assuming that there's only one cluster
-
- for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
- fClusterWeight[i]=0;
- fClusterTracks[0][i]=-1;
- fClusterTracks[1][i]=-1;
- fClusterTracks[2][i]=-1;
- fClusterTracks[3][i]=-1;
- fY[i]=0;
- fZ[i]=0;
- }
-
- fYB[0]=0;
- fYB[1]=0;
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer5; j++) {
- for (Int_t j1=0; j1<6; j1++) {
- fClusters5[j1][j]=0;
- fClusterIndex5[j1][j]=-1;
- fY5[j1][j]=0;
- fZ5[j1][j]=0;
- fN5[j1]=0;
- fBy5[j1][0]=0;
- fBy5[j1][1]=0;
- }
- }
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer10; j++) {
- for (Int_t j1=0; j1<11; j1++) {
- fClusters10[j1][j]=0;
- fClusterIndex10[j1][j]=-1;
- fY10[j1][j]=0;
- fZ10[j1][j]=0;
- fN10[j1]=0;
- fBy10[j1][0]=0;
- fBy10[j1][1]=0;
- }
- }
-
- for (Int_t j=0; j<AliITSRecoParam::kMaxClusterPerLayer20; j++) {
- for (Int_t j1=0; j1<21; j1++) {
- fClusters20[j1][j]=0;
- fClusterIndex20[j1][j]=-1;
- fY20[j1][j]=0;
- fZ20[j1][j]=0;
- fN20[j1]=0;
- fBy20[j1][0]=0;
- fBy20[j1][1]=0;
- }
- }
- for(Int_t i=0;i<AliITSRecoParam::kMaxClusterPerLayer;i++){
- fClusters[i]=NULL;
- fClusterIndex[i]=0;
- }
-}
-/*
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSlayer::AliITSlayer(const AliITSlayer& layer):
-fR(layer.fR),
-fPhiOffset(layer.fPhiOffset),
-fNladders(layer.fNladders),
-fZOffset(layer.fZOffset),
-fNdetectors(layer.fNdetectors),
-fDetectors(layer.fDetectors),
-fN(layer.fN),
-fDy5(layer.fDy5),
-fDy10(layer.fDy10),
-fDy20(layer.fDy20),
-fClustersCs(layer.fClustersCs),
-fClusterIndexCs(layer.fClusterIndexCs),
-fYcs(layer.fYcs),
-fZcs(layer.fZcs),
-fNcs(layer.fNcs),
-fCurrentSlice(layer.fCurrentSlice),
-fZmin(layer.fZmin),
-fZmax(layer.fZmax),
-fYmin(layer.fYmin),
-fYmax(layer.fYmax),
-fI(layer.fI),
-fImax(layer.fImax),
-fSkip(layer.fSkip),
-fAccepted(layer.fAccepted),
-fRoad(layer.fRoad),
-fMaxSigmaClY(layer.fMaxSigmaClY),
-fMaxSigmaClZ(layer.fMaxSigmaClZ),
-fNMaxSigmaCl(layer.fNMaxSigmaCl)
-{
- //Copy constructor
-}
-*/
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSlayer::~AliITSlayer() {
- //--------------------------------------------------------------------
- // AliITSlayer destructor
- //--------------------------------------------------------------------
- delete [] fDetectors;
- for (Int_t i=0; i<fN; i++) delete fClusters[i];
- for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
- fClusterWeight[i]=0;
- fClusterTracks[0][i]=-1;
- fClusterTracks[1][i]=-1;
- fClusterTracks[2][i]=-1;
- fClusterTracks[3][i]=-1;
- }
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSlayer::ResetClusters() {
- //--------------------------------------------------------------------
- // This function removes loaded clusters
- //--------------------------------------------------------------------
- for (Int_t i=0; i<fN; i++) delete fClusters[i];
- for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++){
- fClusterWeight[i]=0;
- fClusterTracks[0][i]=-1;
- fClusterTracks[1][i]=-1;
- fClusterTracks[2][i]=-1;
- fClusterTracks[3][i]=-1;
- }
-
- fN=0;
- fI=0;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSlayer::ResetWeights() {
- //--------------------------------------------------------------------
- // This function reset weights of the clusters
- //--------------------------------------------------------------------
- for (Int_t i=0; i<AliITSRecoParam::GetMaxClusterPerLayer(); i++) {
- fClusterWeight[i]=0;
- fClusterTracks[0][i]=-1;
- fClusterTracks[1][i]=-1;
- fClusterTracks[2][i]=-1;
- fClusterTracks[3][i]=-1;
- }
- for (Int_t i=0; i<fN;i++) {
- AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster(i);
- if (cl&&cl->IsUsed()) cl->Use();
- }
-
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSlayer::ResetRoad() {
- //--------------------------------------------------------------------
- // This function calculates the road defined by the cluster density
- //--------------------------------------------------------------------
- Int_t n=0;
- for (Int_t i=0; i<fN; i++) {
- if (TMath::Abs(fClusters[i]->GetZ())<fR) n++;
- }
- if (n>1) fRoad=2*fR*TMath::Sqrt(TMath::Pi()/n);
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::AliITSlayer::InsertCluster(AliITSRecPoint *cl) {
- //--------------------------------------------------------------------
- //This function adds a cluster to this layer
- //--------------------------------------------------------------------
- if (fN==AliITSRecoParam::GetMaxClusterPerLayer()) {
- return 1;
- }
- fCurrentSlice=-1;
- fClusters[fN]=cl;
- fN++;
- AliITSdetector &det=GetDetector(cl->GetDetectorIndex());
- //AD
- Double_t nSigmaY=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaY2());
- Double_t nSigmaZ=fNMaxSigmaCl*TMath::Sqrt(cl->GetSigmaZ2());
- if (cl->GetY()-nSigmaY<det.GetYmin()) det.SetYmin(cl->GetY()-nSigmaY);
- if (cl->GetY()+nSigmaY>det.GetYmax()) det.SetYmax(cl->GetY()+nSigmaY);
- if (cl->GetZ()-nSigmaZ<det.GetZmin()) det.SetZmin(cl->GetZ()-nSigmaZ);
- if (cl->GetZ()+nSigmaZ>det.GetZmax()) det.SetZmax(cl->GetZ()+nSigmaZ);
- //AD
- /*
- if (cl->GetY()<det.GetYmin()) det.SetYmin(cl->GetY());
- if (cl->GetY()>det.GetYmax()) det.SetYmax(cl->GetY());
- if (cl->GetZ()<det.GetZmin()) det.SetZmin(cl->GetZ());
- if (cl->GetZ()>det.GetZmax()) det.SetZmax(cl->GetZ());
- */
- return 0;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSlayer::SortClusters()
-{
- //
- //sort clusters
- //
- AliITSRecPoint **clusters = new AliITSRecPoint*[fN];
- Float_t *z = new Float_t[fN];
- Int_t * index = new Int_t[fN];
- //
- fMaxSigmaClY=0.; //AD
- fMaxSigmaClZ=0.; //AD
-
- for (Int_t i=0;i<fN;i++){
- z[i] = fClusters[i]->GetZ();
- // save largest errors in y and z for this layer
- fMaxSigmaClY=TMath::Max(fMaxSigmaClY,TMath::Sqrt(fClusters[i]->GetSigmaY2()));
- fMaxSigmaClZ=TMath::Max(fMaxSigmaClZ,TMath::Sqrt(fClusters[i]->GetSigmaZ2()));
- }
- TMath::Sort(fN,z,index,kFALSE);
- for (Int_t i=0;i<fN;i++){
- clusters[i] = fClusters[index[i]];
- }
- //
- for (Int_t i=0;i<fN;i++){
- fClusters[i] = clusters[i];
- fZ[i] = fClusters[i]->GetZ();
- AliITSdetector &det=GetDetector(fClusters[i]->GetDetectorIndex());
- Double_t y=fR*det.GetPhi() + fClusters[i]->GetY();
- if (y>2.*fR*TMath::Pi()) y -= 2.*fR*TMath::Pi();
- fY[i] = y;
- }
- delete[] index;
- delete[] z;
- delete[] clusters;
- //
-
- fYB[0]=10000000;
- fYB[1]=-10000000;
- for (Int_t i=0;i<fN;i++){
- if (fY[i]<fYB[0]) fYB[0]=fY[i];
- if (fY[i]>fYB[1]) fYB[1]=fY[i];
- fClusterIndex[i] = i;
- }
- //
- // fill slices
- fDy5 = (fYB[1]-fYB[0])/5.;
- fDy10 = (fYB[1]-fYB[0])/10.;
- fDy20 = (fYB[1]-fYB[0])/20.;
- for (Int_t i=0;i<6;i++) fN5[i] =0;
- for (Int_t i=0;i<11;i++) fN10[i]=0;
- for (Int_t i=0;i<21;i++) fN20[i]=0;
- //
- for (Int_t i=0;i<6;i++) {fBy5[i][0] = fYB[0]+(i-0.75)*fDy5; fBy5[i][1] = fYB[0]+(i+0.75)*fDy5;}
- for (Int_t i=0;i<11;i++) {fBy10[i][0] = fYB[0]+(i-0.75)*fDy10; fBy10[i][1] = fYB[0]+(i+0.75)*fDy10;}
- for (Int_t i=0;i<21;i++) {fBy20[i][0] = fYB[0]+(i-0.75)*fDy20; fBy20[i][1] = fYB[0]+(i+0.75)*fDy20;}
- //
- //
- for (Int_t i=0;i<fN;i++)
- for (Int_t irot=-1;irot<=1;irot++){
- Float_t curY = fY[i]+irot*TMath::TwoPi()*fR;
- // slice 5
- for (Int_t slice=0; slice<6;slice++){
- if (fBy5[slice][0]<curY && curY<fBy5[slice][1]&&fN5[slice]<AliITSRecoParam::GetMaxClusterPerLayer5()){
- fClusters5[slice][fN5[slice]] = fClusters[i];
- fY5[slice][fN5[slice]] = curY;
- fZ5[slice][fN5[slice]] = fZ[i];
- fClusterIndex5[slice][fN5[slice]]=i;
- fN5[slice]++;
- }
- }
- // slice 10
- for (Int_t slice=0; slice<11;slice++){
- if (fBy10[slice][0]<curY && curY<fBy10[slice][1]&&fN10[slice]<AliITSRecoParam::GetMaxClusterPerLayer10()){
- fClusters10[slice][fN10[slice]] = fClusters[i];
- fY10[slice][fN10[slice]] = curY;
- fZ10[slice][fN10[slice]] = fZ[i];
- fClusterIndex10[slice][fN10[slice]]=i;
- fN10[slice]++;
- }
- }
- // slice 20
- for (Int_t slice=0; slice<21;slice++){
- if (fBy20[slice][0]<curY && curY<fBy20[slice][1]&&fN20[slice]<AliITSRecoParam::GetMaxClusterPerLayer20()){
- fClusters20[slice][fN20[slice]] = fClusters[i];
- fY20[slice][fN20[slice]] = curY;
- fZ20[slice][fN20[slice]] = fZ[i];
- fClusterIndex20[slice][fN20[slice]]=i;
- fN20[slice]++;
- }
- }
- }
-
- //
- // consistency check
- //
- for (Int_t i=0;i<fN-1;i++){
- if (fZ[i]>fZ[i+1]){
- printf("Bug\n");
- }
- }
- //
- for (Int_t slice=0;slice<21;slice++)
- for (Int_t i=0;i<fN20[slice]-1;i++){
- if (fZ20[slice][i]>fZ20[slice][i+1]){
- printf("Bug\n");
- }
- }
-
-
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::AliITSlayer::FindClusterIndex(Float_t z) const {
- //--------------------------------------------------------------------
- // This function returns the index of the nearest cluster
- //--------------------------------------------------------------------
- Int_t ncl=0;
- const Float_t *zcl;
- if (fCurrentSlice<0) {
- ncl = fN;
- zcl = fZ;
- }
- else{
- ncl = fNcs;
- zcl = fZcs;;
- }
-
- if (ncl==0) return 0;
- Int_t b=0, e=ncl-1, m=(b+e)/2;
- for (; b<e; m=(b+e)/2) {
- // if (z > fClusters[m]->GetZ()) b=m+1;
- if (z > zcl[m]) b=m+1;
- else e=m;
- }
- return m;
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::ComputeRoad(AliITStrackMI* track,Int_t ilayer,Int_t idet,Double_t &zmin,Double_t &zmax,Double_t &ymin,Double_t &ymax) const {
- //--------------------------------------------------------------------
- // This function computes the rectangular road for this track
- //--------------------------------------------------------------------
-
-
- AliITSdetector &det = fgLayers[ilayer].GetDetector(idet);
- // take into account the misalignment: propagate track to misaligned detector plane
- if (!track->Propagate(det.GetPhi(),det.GetRmisal())) return kFALSE;
-
- Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
- TMath::Sqrt(track->GetSigmaZ2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
- Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
- TMath::Sqrt(track->GetSigmaY2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
-
- // track at boundary between detectors, enlarge road
- Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidth();
- if ( (track->GetY()-dy < det.GetYmin()+boundaryWidth) ||
- (track->GetY()+dy > det.GetYmax()-boundaryWidth) ||
- (track->GetZ()-dz < det.GetZmin()+boundaryWidth) ||
- (track->GetZ()+dz > det.GetZmax()-boundaryWidth) ) {
- Float_t tgl = TMath::Abs(track->GetTgl());
- if (tgl > 1.) tgl=1.;
- Double_t deltaXNeighbDets=AliITSRecoParam::GetDeltaXNeighbDets();
- dz = TMath::Sqrt(dz*dz+deltaXNeighbDets*deltaXNeighbDets*tgl*tgl);
- Float_t snp = TMath::Abs(track->GetSnp());
- if (snp > AliITSReconstructor::GetRecoParam()->GetMaxSnp()) return kFALSE;
- dy = TMath::Sqrt(dy*dy+deltaXNeighbDets*deltaXNeighbDets*snp*snp);
- } // boundary
-
- // add to the road a term (up to 2-3 mm) to deal with misalignments
- dy = TMath::Sqrt(dy*dy + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
- dz = TMath::Sqrt(dz*dz + AliITSReconstructor::GetRecoParam()->GetRoadMisal()*AliITSReconstructor::GetRecoParam()->GetRoadMisal());
-
- Double_t r = fgLayers[ilayer].GetR();
- zmin = track->GetZ() - dz;
- zmax = track->GetZ() + dz;
- ymin = track->GetY() + r*det.GetPhi() - dy;
- ymax = track->GetY() + r*det.GetPhi() + dy;
-
- // bring track back to idead detector plane
- if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
-
- return kTRUE;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSlayer::
-SelectClusters(Double_t zmin,Double_t zmax,Double_t ymin, Double_t ymax) {
- //--------------------------------------------------------------------
- // This function sets the "window"
- //--------------------------------------------------------------------
-
- Double_t circle=2*TMath::Pi()*fR;
- fYmin = ymin;
- fYmax = ymax;
- fZmin = zmin;
- fZmax = zmax;
- // AD
- // enlarge road in y by maximum cluster error on this layer (3 sigma)
- fYmin -= fNMaxSigmaCl*fMaxSigmaClY;
- fYmax += fNMaxSigmaCl*fMaxSigmaClY;
- fZmin -= fNMaxSigmaCl*fMaxSigmaClZ;
- fZmax += fNMaxSigmaCl*fMaxSigmaClZ;
-
- Float_t ymiddle = (fYmin+fYmax)*0.5;
- if (ymiddle<fYB[0]) {
- fYmin+=circle; fYmax+=circle; ymiddle+=circle;
- } else if (ymiddle>fYB[1]) {
- fYmin-=circle; fYmax-=circle; ymiddle-=circle;
- }
-
- //
- fCurrentSlice =-1;
- // defualt take all
- fClustersCs = fClusters;
- fClusterIndexCs = fClusterIndex;
- fYcs = fY;
- fZcs = fZ;
- fNcs = fN;
- //
- //is in 20 slice?
- if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy20){
- Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy20);
- if (slice<0) slice=0;
- if (slice>20) slice=20;
- Bool_t isOK = (fYmin>fBy20[slice][0]&&fYmax<fBy20[slice][1]);
- if (isOK) {
- fCurrentSlice=slice;
- fClustersCs = fClusters20[fCurrentSlice];
- fClusterIndexCs = fClusterIndex20[fCurrentSlice];
- fYcs = fY20[fCurrentSlice];
- fZcs = fZ20[fCurrentSlice];
- fNcs = fN20[fCurrentSlice];
- }
- }
- //
- //is in 10 slice?
- if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy10){
- Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy10);
- if (slice<0) slice=0;
- if (slice>10) slice=10;
- Bool_t isOK = (fYmin>fBy10[slice][0]&&fYmax<fBy10[slice][1]);
- if (isOK) {
- fCurrentSlice=slice;
- fClustersCs = fClusters10[fCurrentSlice];
- fClusterIndexCs = fClusterIndex10[fCurrentSlice];
- fYcs = fY10[fCurrentSlice];
- fZcs = fZ10[fCurrentSlice];
- fNcs = fN10[fCurrentSlice];
- }
- }
- //
- //is in 5 slice?
- if (fCurrentSlice<0&&TMath::Abs(fYmax-fYmin)<1.49*fDy5){
- Int_t slice = int(0.5+(ymiddle-fYB[0])/fDy5);
- if (slice<0) slice=0;
- if (slice>5) slice=5;
- Bool_t isOK = (fYmin>fBy5[slice][0]&&fYmax<fBy5[slice][1]);
- if (isOK) {
- fCurrentSlice=slice;
- fClustersCs = fClusters5[fCurrentSlice];
- fClusterIndexCs = fClusterIndex5[fCurrentSlice];
- fYcs = fY5[fCurrentSlice];
- fZcs = fZ5[fCurrentSlice];
- fNcs = fN5[fCurrentSlice];
- }
- }
- //
- fI = FindClusterIndex(fZmin);
- fImax = TMath::Min(FindClusterIndex(fZmax)+1,fNcs);
- fSkip = 0;
- fAccepted = 0;
-
- return;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::AliITSlayer::
-FindDetectorIndex(Double_t phi, Double_t z) const {
- //--------------------------------------------------------------------
- //This function finds the detector crossed by the track
- //--------------------------------------------------------------------
- Double_t dphi;
- if (fZOffset<0) // old geometry
- dphi = -(phi-fPhiOffset);
- else // new geometry
- dphi = phi-fPhiOffset;
-
-
- if (dphi < 0) dphi += 2*TMath::Pi();
- else if (dphi >= 2*TMath::Pi()) dphi -= 2*TMath::Pi();
- Int_t np=Int_t(dphi*fNladders*0.5/TMath::Pi()+0.5);
- if (np>=fNladders) np-=fNladders;
- if (np<0) np+=fNladders;
-
-
- Double_t dz=fZOffset-z;
- Double_t nnz = dz*(fNdetectors-1)*0.5/fZOffset+0.5;
- Int_t nz = (nnz<0 ? -1 : (Int_t)nnz);
- if (nz>=fNdetectors || nz<0) {
- //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
- return -1;
- }
-
- // ad hoc correction for 3rd ladder of SDD inner layer,
- // which is reversed (rotated by pi around local y)
- // this correction is OK only from AliITSv11Hybrid onwards
- if (GetR()>12. && GetR()<20.) { // SDD inner
- if(np==2) { // 3rd ladder
- Double_t posMod252[3];
- AliITSgeomTGeo::GetTranslation(252,posMod252);
- // check the Z coordinate of Mod 252: if negative
- // (old SDD geometry in AliITSv11Hybrid)
- // the swap of numeration whould be applied
- if(posMod252[2]<0.){
- nz = (fNdetectors-1) - nz;
- }
- }
- }
- //printf("ndet %d phi %f z %f np %d nz %d\n",fNdetectors,phi,z,np,nz);
-
-
- return np*fNdetectors + nz;
-}
-//------------------------------------------------------------------------
-const AliITSRecPoint *AliITStrackerMI::AliITSlayer::GetNextCluster(Int_t &ci,Bool_t test)
-{
- //--------------------------------------------------------------------
- // This function returns clusters within the "window"
- //--------------------------------------------------------------------
-
- if (fCurrentSlice<0) {
- Double_t rpi2 = 2.*fR*TMath::Pi();
- for (Int_t i=fI; i<fImax; i++) {
- Double_t y = fY[i];
- Double_t z = fZ[i];
- if (fYmax<y) y -= rpi2;
- if (fYmin>y) y += rpi2;
- if (y<fYmin) continue;
- if (y>fYmax) continue;
- // AD
- // skip clusters that are in "extended" road but they
- // 3sigma error does not touch the original road
- if (z+fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())<fZmin+fNMaxSigmaCl*fMaxSigmaClZ) continue;
- if (z-fNMaxSigmaCl*TMath::Sqrt(fClusters[i]->GetSigmaZ2())>fZmax-fNMaxSigmaCl*fMaxSigmaClZ) continue;
- //
- if (TMath::Abs(fClusters[i]->GetQ())<1.e-13 && fSkip==2) continue;
- ci=i;
- if (!test) fI=i+1;
- return fClusters[i];
- }
- } else {
- for (Int_t i=fI; i<fImax; i++) {
- if (fYcs[i]<fYmin) continue;
- if (fYcs[i]>fYmax) continue;
- if (TMath::Abs(fClustersCs[i]->GetQ())<1.e-13 && fSkip==2) continue;
- ci=fClusterIndexCs[i];
- if (!test) fI=i+1;
- return fClustersCs[i];
- }
- }
- return 0;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::AliITSlayer::GetThickness(Double_t y,Double_t z,Double_t &x0)
-const {
- //--------------------------------------------------------------------
- // This function returns the layer thickness at this point (units X0)
- //--------------------------------------------------------------------
- Double_t d=0.0085;
- x0=AliITSRecoParam::GetX0Air();
- if (43<fR&&fR<45) { //SSD2
- Double_t dd=0.0034;
- d=dd;
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
- if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
- for (Int_t i=0; i<12; i++) {
- if (TMath::Abs(z-3.9*(i+0.5))<0.15) {
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- d+=0.0034;
- break;
- }
- if (TMath::Abs(z+3.9*(i+0.5))<0.15) {
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- d+=0.0034;
- break;
- }
- if (TMath::Abs(z-3.4-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
- if (TMath::Abs(z+0.5+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
- }
- } else
- if (37<fR&&fR<41) { //SSD1
- Double_t dd=0.0034;
- d=dd;
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- if (TMath::Abs(y-1.90)<0.45) {d+=(0.013-0.0034);}
- if (TMath::Abs(y+1.90)<0.45) {d+=(0.013-0.0034);}
- for (Int_t i=0; i<11; i++) {
- if (TMath::Abs(z-3.9*i)<0.15) {
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- d+=dd;
- break;
- }
- if (TMath::Abs(z+3.9*i)<0.15) {
- if (TMath::Abs(y-0.00)>3.40) d+=dd;
- d+=dd;
- break;
- }
- if (TMath::Abs(z-1.85-3.9*i)<0.50) {d+=(0.016-0.0034); break;}
- if (TMath::Abs(z+2.05+3.9*i)<0.50) {d+=(0.016-0.0034); break;}
- }
- } else
- if (13<fR&&fR<26) { //SDD
- Double_t dd=0.0033;
- d=dd;
- if (TMath::Abs(y-0.00)>3.30) d+=dd;
-
- if (TMath::Abs(y-1.80)<0.55) {
- d+=0.016;
- for (Int_t j=0; j<20; j++) {
- if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
- if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
- }
- }
- if (TMath::Abs(y+1.80)<0.55) {
- d+=0.016;
- for (Int_t j=0; j<20; j++) {
- if (TMath::Abs(z-0.7-1.47*j)<0.12) {d+=0.08; x0=9.; break;}
- if (TMath::Abs(z+0.7+1.47*j)<0.12) {d+=0.08; x0=9.; break;}
- }
- }
-
- for (Int_t i=0; i<4; i++) {
- if (TMath::Abs(z-7.3*i)<0.60) {
- d+=dd;
- if (TMath::Abs(y-0.00)>3.30) d+=dd;
- break;
- }
- if (TMath::Abs(z+7.3*i)<0.60) {
- d+=dd;
- if (TMath::Abs(y-0.00)>3.30) d+=dd;
- break;
- }
- }
- } else
- if (6<fR&&fR<8) { //SPD2
- Double_t dd=0.0063; x0=21.5;
- d=dd;
- if (TMath::Abs(y-3.08)>0.5) d+=dd;
- if (TMath::Abs(y-3.03)<0.10) d+=0.014;
- } else
- if (3<fR&&fR<5) { //SPD1
- Double_t dd=0.0063; x0=21.5;
- d=dd;
- if (TMath::Abs(y+0.21)>0.6) d+=dd;
- if (TMath::Abs(y+0.10)<0.10) d+=0.014;
- }
-
- return d;
-}
-//------------------------------------------------------------------------
-AliITStrackerMI::AliITSdetector::AliITSdetector(const AliITSdetector& det):
-fR(det.fR),
-fRmisal(det.fRmisal),
-fPhi(det.fPhi),
-fSinPhi(det.fSinPhi),
-fCosPhi(det.fCosPhi),
-fYmin(det.fYmin),
-fYmax(det.fYmax),
-fZmin(det.fZmin),
-fZmax(det.fZmax),
-fIsBad(det.fIsBad),
-fNChips(det.fNChips),
-fChipIsBad(det.fChipIsBad)
-{
- //Copy constructor
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AliITSdetector::ReadBadDetectorAndChips(Int_t ilayer,Int_t idet,
- const AliITSDetTypeRec *detTypeRec)
-{
- //--------------------------------------------------------------------
- // Read bad detectors and chips from calibration objects in AliITSDetTypeRec
- //--------------------------------------------------------------------
-
- // In AliITSDetTypeRec, detector numbers go from 0 to 2197
- // while in the tracker they start from 0 for each layer
- for(Int_t il=0; il<ilayer; il++)
- idet += AliITSgeomTGeo::GetNLadders(il+1)*AliITSgeomTGeo::GetNDetectors(il+1);
-
- Int_t detType;
- if (ilayer==0 || ilayer==1) { // ---------- SPD
- detType = 0;
- } else if (ilayer==2 || ilayer==3) { // ---------- SDD
- detType = 1;
- } else if (ilayer==4 || ilayer==5) { // ---------- SSD
- detType = 2;
- } else {
- printf("AliITStrackerMI::AliITSdetector::InitBadFromOCDB: Wrong layer number %d\n",ilayer);
- return;
- }
-
- // Get calibration from AliITSDetTypeRec
- AliITSCalibration *calib = (AliITSCalibration*)detTypeRec->GetCalibrationModel(idet);
- calib->SetModuleIndex(idet);
- AliITSCalibration *calibSPDdead = 0;
- if(detType==0) calibSPDdead = (AliITSCalibration*)detTypeRec->GetSPDDeadModel(idet); // TEMPORARY
- if (calib->IsBad() ||
- (detType==0 && calibSPDdead->IsBad())) // TEMPORARY
- {
- SetBad();
- // printf("lay %d bad %d\n",ilayer,idet);
- }
-
- // Get segmentation from AliITSDetTypeRec
- AliITSsegmentation *segm = (AliITSsegmentation*)detTypeRec->GetSegmentationModel(detType);
-
- // Read info about bad chips
- fNChips = segm->GetMaximumChipIndex()+1;
- //printf("ilayer %d detType %d idet %d fNChips %d %d GetNumberOfChips %d\n",ilayer,detType,idet,fNChips,segm->GetMaximumChipIndex(),segm->GetNumberOfChips());
- if(fChipIsBad) { delete [] fChipIsBad; fChipIsBad=NULL; }
- fChipIsBad = new Bool_t[fNChips];
- for (Int_t iCh=0;iCh<fNChips;iCh++) {
- fChipIsBad[iCh] = calib->IsChipBad(iCh);
- if (detType==0 && calibSPDdead->IsChipBad(iCh)) fChipIsBad[iCh] = kTRUE; // TEMPORARY
- //if(fChipIsBad[iCh]) {printf("lay %d det %d bad chip %d\n",ilayer,idet,iCh);}
- }
-
- return;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetEffectiveThickness()
-{
- //--------------------------------------------------------------------
- // Returns the thickness between the current layer and the vertex (units X0)
- //--------------------------------------------------------------------
-
- if(fUseTGeo!=0) {
- if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
- if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
- if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
- }
-
- // beam pipe
- Double_t dPipe = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
- Double_t d=dPipe*AliITSRecoParam::GetrPipe()*AliITSRecoParam::GetrPipe();
-
- // layers
- Double_t x0=0;
- Double_t xn=fgLayers[fI].GetR();
- for (Int_t i=0; i<fI; i++) {
- Double_t xi=fgLayers[i].GetR();
- Double_t dLayer = (fUseTGeo==0 ? fgLayers[i].GetThickness(0,0,x0) : fxOverX0Layer[i]);
- d+=dLayer*xi*xi;
- }
-
- // shields
- if (fI>1) {
- Double_t dshieldSPD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
- d+=dshieldSPD*AliITSRecoParam::GetrInsideShield(0)*AliITSRecoParam::GetrInsideShield(0);
- }
- if (fI>3) {
- Double_t dshieldSDD = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
- d+=dshieldSDD*AliITSRecoParam::GetrInsideShield(1)*AliITSRecoParam::GetrInsideShield(1);
- }
- return d/(xn*xn);
-}
-
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::GetEffectiveThicknessLbyL(Double_t* xMS, Double_t* x2x0MS)
-{
- //--------------------------------------------------------------------
- // Returns the array of layers between the current layer and the vertex
- //--------------------------------------------------------------------
- //
- if(fUseTGeo!=0) {
- if(fxOverX0Layer[0]<0) BuildMaterialLUT("Layers");
- if(fxOverX0Shield[0]<0) BuildMaterialLUT("Shields");
- if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
- }
-
- int nl = 0;
- double x0 = 0;
- for (int il=fI;il--;) {
- //
- if (il==3) {
- x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(1) : fxOverX0Shield[1]);
- xMS[nl++] = AliITSRecoParam::GetrInsideShield(1);
- }
- else if (il==1) {
- x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::Getdshield(0) : fxOverX0Shield[0]);
- xMS[nl++] = AliITSRecoParam::GetrInsideShield(0);
- }
- //
- x2x0MS[nl] = (fUseTGeo==0 ? fgLayers[il].GetThickness(0,0,x0) : fxOverX0Layer[il]);
- xMS[nl++] = fgLayers[il].GetR();
- //
- }
- //
- // beam pipe
- x2x0MS[nl] = (fUseTGeo==0 ? AliITSRecoParam::GetdPipe() : fxOverX0Pipe);
- xMS[nl++] = AliITSRecoParam::GetrPipe();
- //
- return nl;
-}
-
-
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::AliITSlayer::InRoad() const {
- //-------------------------------------------------------------------
- // This function returns number of clusters within the "window"
- //--------------------------------------------------------------------
- Int_t ncl=0;
- for (Int_t i=fI; i<fN; i++) {
- const AliITSRecPoint *c=fClusters[i];
- if (c->GetZ() > fZmax) break;
- if (c->IsUsed()) continue;
- const AliITSdetector &det=GetDetector(c->GetDetectorIndex());
- Double_t y=fR*det.GetPhi() + c->GetY();
-
- if (y>2.*fR*TMath::Pi()) y -= 2*fR*TMath::Pi();
- if (y>1.*fR*TMath::Pi() && fYmax<y) y -= 2*fR*TMath::Pi();
-
- if (y<fYmin) continue;
- if (y>fYmax) continue;
- ncl++;
- }
- return ncl;
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
- const AliITStrackMI *clusters,Bool_t extra, Bool_t planeeff)
-{
- //--------------------------------------------------------------------
- // This function refits the track "track" at the position "x" using
- // the clusters from "clusters"
- // If "extra"==kTRUE,
- // the clusters from overlapped modules get attached to "track"
- // If "planeff"==kTRUE,
- // special approach for plane efficiency evaluation is applyed
- //--------------------------------------------------------------------
-
- Int_t index[AliITSgeomTGeo::kNLayers];
- Int_t k;
- for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
- Int_t nc=clusters->GetNumberOfClusters();
- for (k=0; k<nc; k++) {
- Int_t idx=clusters->GetClusterIndex(k);
- Int_t ilayer=(idx&0xf0000000)>>28;
- index[ilayer]=idx;
- }
-
- return RefitAt(xx,track,index,extra,planeeff); // call the method below
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::RefitAt(Double_t xx,AliITStrackMI *track,
- const Int_t *clusters,Bool_t extra, Bool_t planeeff)
-{
- //--------------------------------------------------------------------
- // This function refits the track "track" at the position "x" using
- // the clusters from array
- // If "extra"==kTRUE,
- // the clusters from overlapped modules get attached to "track"
- // If "planeff"==kTRUE,
- // special approach for plane efficiency evaluation is applyed
- //--------------------------------------------------------------------
- Int_t index[AliITSgeomTGeo::kNLayers];
- Int_t k;
- for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
- //
- for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
- index[k]=clusters[k];
- }
-
- // special for cosmics and TPC prolonged tracks:
- // propagate to the innermost of:
- // - innermost layer crossed by the track
- // - innermost layer where a cluster was associated to the track
- static AliITSRecoParam *repa = NULL;
- if(!repa){
- repa = (AliITSRecoParam*) AliITSReconstructor::GetRecoParam();
- if(!repa){
- repa = AliITSRecoParam::GetHighFluxParam();
- AliWarning("Using default AliITSRecoParam class");
- }
- }
- Int_t evsp=repa->GetEventSpecie();
- ULong_t trStatus=0;
- if(track->GetESDtrack()) trStatus=track->GetStatus();
- Int_t innermostlayer=0;
- if((evsp&AliRecoParam::kCosmic) || (trStatus&AliESDtrack::kTPCin)) {
- innermostlayer=5;
- Double_t drphi = TMath::Abs(track->GetD(0.,0.));
- for(innermostlayer=0; innermostlayer<AliITSgeomTGeo::GetNLayers(); innermostlayer++) {
- if( (drphi < (fgLayers[innermostlayer].GetR()+1.)) ||
- index[innermostlayer] >= 0 ) break;
- }
-
- AliDebug(2,Form(" drphi %f innermost %d",drphi,innermostlayer));
- }
-
- Int_t modstatus=1; // found
- Float_t xloc,zloc;
- Int_t from, to, step;
- if (xx > track->GetX()) {
- from=innermostlayer; to=AliITSgeomTGeo::GetNLayers();
- step=+1;
- } else {
- from=AliITSgeomTGeo::GetNLayers()-1; to=innermostlayer-1;
- step=-1;
- }
- TString dir = (step>0 ? "outward" : "inward");
-
- for (Int_t ilayer = from; ilayer != to; ilayer += step) {
- AliITSlayer &layer=fgLayers[ilayer];
- Double_t r=layer.GetR();
-
- if (step<0 && xx>r) break;
-
- // material between SSD and SDD, SDD and SPD
- Double_t hI=ilayer-0.5*step;
- if (TMath::Abs(hI-3.5)<0.01) // SDDouter
- if(!CorrectForShieldMaterial(track,"SDD",dir)) return kFALSE;
- if (TMath::Abs(hI-1.5)<0.01) // SPDouter
- if(!CorrectForShieldMaterial(track,"SPD",dir)) return kFALSE;
-
-
- Double_t oldGlobXYZ[3];
- if (!track->GetXYZ(oldGlobXYZ)) return kFALSE;
-
- // continue if we are already beyond this layer
- Double_t oldGlobR = TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
- if(step>0 && oldGlobR > r) continue; // going outward
- if(step<0 && oldGlobR < r) continue; // going inward
-
- Double_t phi,z;
- if (!track->GetPhiZat(r,phi,z)) return kFALSE;
-
- Int_t idet=layer.FindDetectorIndex(phi,z);
-
- // check if we allow a prolongation without point for large-eta tracks
- Int_t skip = CheckSkipLayer(track,ilayer,idet);
- if (skip==2) {
- modstatus = 4; // out in z
- if(LocalModuleCoord(ilayer,idet,track,xloc,zloc)) { // local module coords
- track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
- }
- // cross layer
- // apply correction for material of the current layer
- // add time if going outward
- CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir);
- continue;
- }
-
- if (idet<0) return kFALSE;
-
-
- const AliITSdetector &det=layer.GetDetector(idet);
- // only for ITS-SA tracks refit
- if (ilayer>1 && fTrackingPhase.Contains("RefitInward") && !(track->GetStatus()&AliESDtrack::kTPCin)) track->SetCheckInvariant(kFALSE);
- //
- if (!track->Propagate(det.GetPhi(),det.GetR())) return kFALSE;
-
- track->SetDetectorIndex(idet);
- if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
-
- Double_t dz,zmin,zmax,dy,ymin,ymax;
-
- const AliITSRecPoint *clAcc=0;
- Double_t maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
-
- Int_t idx=index[ilayer];
- if (idx>=0) { // cluster in this layer
- modstatus = 6; // no refit
- const AliITSRecPoint *cl=(AliITSRecPoint *)GetCluster(idx);
- if (cl) {
- if (idet != cl->GetDetectorIndex()) {
- idet=cl->GetDetectorIndex();
- const AliITSdetector &detc=layer.GetDetector(idet);
- if (!track->Propagate(detc.GetPhi(),detc.GetR())) return kFALSE;
- track->SetDetectorIndex(idet);
- if(!LocalModuleCoord(ilayer,idet,track,xloc,zloc)) return kFALSE; // local module coords
- }
- Int_t cllayer = (idx & 0xf0000000) >> 28;;
- Double_t chi2=GetPredictedChi2MI(track,cl,cllayer);
- if (chi2<maxchi2) {
- clAcc=cl;
- maxchi2=chi2;
- modstatus = 1; // found
- } else {
- return kFALSE; //
- }
- }
- } else { // no cluster in this layer
- if (skip==1) {
- modstatus = 3; // skipped
- // Plane Eff determination:
- if (planeeff && ilayer==AliITSReconstructor::GetRecoParam()->GetIPlanePlaneEff()) {
- if (IsOKForPlaneEff(track,clusters,ilayer)) // only adequate track for plane eff. evaluation
- UseTrackForPlaneEff(track,ilayer);
- }
- } else {
- modstatus = 5; // no cls in road
- // check dead
- if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
- dz = 0.5*(zmax-zmin);
- dy = 0.5*(ymax-ymin);
- Int_t dead = CheckDeadZone(track,ilayer,idet,dz,dy,kTRUE);
- if (dead==1) modstatus = 7; // holes in z in SPD
- if (dead==2 || dead==3 || dead==4) modstatus = 2; // dead from OCDB
- }
- }
-
- if (clAcc) {
- if (!UpdateMI(track,clAcc,maxchi2,idx)) return kFALSE;
- track->SetSampledEdx(clAcc->GetQ(),ilayer-2);
- }
- track->SetModuleIndexInfo(ilayer,idet,modstatus,xloc,zloc);
-
-
- if (extra && clAcc) { // search for extra clusters in overlapped modules
- AliITStrackV2 tmp(*track);
- if (!ComputeRoad(track,ilayer,idet,zmin,zmax,ymin,ymax)) return kFALSE;
- layer.SelectClusters(zmin,zmax,ymin,ymax);
-
- const AliITSRecPoint *clExtra=0; Int_t ci=-1,cci=-1;
- Int_t idetExtra=-1;
- maxchi2=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
- Double_t tolerance=0.1;
- while ((clExtra=layer.GetNextCluster(ci))!=0) {
- // only clusters in another module! (overlaps)
- idetExtra = clExtra->GetDetectorIndex();
- if (idet == idetExtra) continue;
-
- const AliITSdetector &detx=layer.GetDetector(idetExtra);
-
- if (!tmp.Propagate(detx.GetPhi(),detx.GetR()+clExtra->GetX())) continue;
- if (TMath::Abs(tmp.GetZ() - clExtra->GetZ()) > tolerance) continue;
- if (TMath::Abs(tmp.GetY() - clExtra->GetY()) > tolerance) continue;
- if (!tmp.Propagate(detx.GetPhi(),detx.GetR())) continue;
-
- Double_t chi2=tmp.GetPredictedChi2(clExtra);
- if (chi2<maxchi2) { maxchi2=chi2; cci=ci; }
- }
- if (cci>=0) {
- track->SetExtraCluster(ilayer,(ilayer<<28)+cci);
- track->SetExtraModule(ilayer,idetExtra);
- }
- } // end search for extra clusters in overlapped modules
-
- // Correct for material of the current layer
- // cross material
- // add time if going outward
- if(!CorrectForLayerMaterial(track,ilayer,oldGlobXYZ,dir)) return kFALSE;
- track->SetCheckInvariant(kTRUE);
- } // end loop on layers
-
- if (!track->PropagateTo(xx,0.,0.)) return kFALSE;
-
- return kTRUE;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetNormalizedChi2(AliITStrackMI * track, Int_t mode)
-{
- //
- // calculate normalized chi2
- // return NormalizedChi2(track,0);
- Float_t chi2 = 0;
- Float_t sum=0;
- Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
- // track->fdEdxMismatch=0;
- Float_t dedxmismatch =0;
- Float_t *ny = GetNy(fCurrentEsdTrack), *nz = GetNz(fCurrentEsdTrack);
- if (mode<100){
- for (Int_t i = 0;i<6;i++){
- if (track->GetClIndex(i)>=0){
- Float_t cerry, cerrz;
- if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
- else
- { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
- cerry*=cerry;
- cerrz*=cerrz;
- Float_t cchi2 = (track->GetDy(i)*track->GetDy(i)/cerry)+(track->GetDz(i)*track->GetDz(i)/cerrz);
- if (i>1 && AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(i)) {
- Float_t ratio = track->GetNormQ(i)/track->GetExpQ();
- if (ratio<0.5) {
- cchi2+=(0.5-ratio)*10.;
- //track->fdEdxMismatch+=(0.5-ratio)*10.;
- dedxmismatch+=(0.5-ratio)*10.;
- }
- }
- if (i<2 ||i>3){
- AliITSRecPoint * cl = (AliITSRecPoint*)GetCluster( track->GetClIndex(i));
- Double_t delta = cl->GetNy()+cl->GetNz()-ny[i]-nz[i];
- if (delta>1) chi2 +=0.5*TMath::Min(delta/2,2.);
- if (i<2) chi2+=2*cl->GetDeltaProbability();
- }
- chi2+=cchi2;
- sum++;
- }
- }
- if (TMath::Abs(track->GetdEdxMismatch()-dedxmismatch)>0.0001){
- track->SetdEdxMismatch(dedxmismatch);
- }
- }
- else{
- for (Int_t i = 0;i<4;i++){
- if (track->GetClIndex(i)>=0){
- Float_t cerry, cerrz;
- if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
- else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
- cerry*=cerry;
- cerrz*=cerrz;
- chi2+= (track->GetDy(i)*track->GetDy(i)/cerry);
- chi2+= (track->GetDz(i)*track->GetDz(i)/cerrz);
- sum++;
- }
- }
- for (Int_t i = 4;i<6;i++){
- if (track->GetClIndex(i)>=0){
- Float_t cerry, cerrz;
- if (ny[i]>0) {cerry = erry[i]; cerrz=errz[i];}
- else { cerry= track->GetSigmaY(i); cerrz = track->GetSigmaZ(i);}
- cerry*=cerry;
- cerrz*=cerrz;
- Float_t cerryb, cerrzb;
- if (ny[i+6]>0) {cerryb = erry[i+6]; cerrzb=errz[i+6];}
- else { cerryb= track->GetSigmaY(i+6); cerrzb = track->GetSigmaZ(i+6);}
- cerryb*=cerryb;
- cerrzb*=cerrzb;
- chi2+= TMath::Min((track->GetDy(i+6)*track->GetDy(i+6)/cerryb),track->GetDy(i)*track->GetDy(i)/cerry);
- chi2+= TMath::Min((track->GetDz(i+6)*track->GetDz(i+6)/cerrzb),track->GetDz(i)*track->GetDz(i)/cerrz);
- sum++;
- }
- }
- }
- if (track->GetESDtrack()->GetTPCsignal()>85){
- Float_t ratio = track->GetdEdx()/track->GetESDtrack()->GetTPCsignal();
- if (ratio<0.5) {
- chi2+=(0.5-ratio)*5.;
- }
- if (ratio>2){
- chi2+=(ratio-2.0)*3;
- }
- }
- //
- Double_t match = TMath::Sqrt(track->GetChi22());
- if (track->GetConstrain()) match/=track->GetNumberOfClusters();
- if (!track->GetConstrain()) {
- if (track->GetNumberOfClusters()>2) {
- match/=track->GetNumberOfClusters()-2.;
- } else {
- match=0;
- }
- }
- if (match<0) match=0;
-
- // penalty factor for missing points (NDeadZone>0), but no penalty
- // for layer with deadZoneProb close to 1 (either we wanted to skip layer
- // or there is a dead from OCDB)
- Float_t deadzonefactor = 0.;
- if (track->GetNDeadZone()>0.) {
- Int_t sumDeadZoneProbability=0;
- for(Int_t ilay=0;ilay<6;ilay++) {
- if(track->GetDeadZoneProbability(ilay)>0.) sumDeadZoneProbability++;
- }
- Int_t nDeadZoneWithProbNot1=(Int_t)(track->GetNDeadZone())-sumDeadZoneProbability;
- if(nDeadZoneWithProbNot1>0) {
- Float_t deadZoneProbability = track->GetNDeadZone()-(Float_t)sumDeadZoneProbability;
- AliDebug(2,Form("nDeadZone %f sumDZProbability %d nDZWithProbNot1 %d deadZoneProb %f\n",track->GetNDeadZone(),sumDeadZoneProbability,nDeadZoneWithProbNot1,deadZoneProbability));
- deadZoneProbability /= (Float_t)nDeadZoneWithProbNot1;
- Float_t one = 1.;
- deadZoneProbability = TMath::Min(deadZoneProbability,one);
- deadzonefactor = 3.*(1.1-deadZoneProbability);
- }
- }
-
- Double_t normchi2 = 2*track->GetNSkipped()+match+deadzonefactor+(1+(2*track->GetNSkipped()+deadzonefactor)/track->GetNumberOfClusters())*
- (chi2)/TMath::Max(double(sum-track->GetNSkipped()),
- 1./(1.+track->GetNSkipped()));
- AliDebug(2,Form("match %f deadzonefactor %f chi2 %f sum %f skipped %f\n",match,deadzonefactor,chi2,sum,track->GetNSkipped()));
- AliDebug(2,Form("NormChi2 %f cls %d\n",normchi2,track->GetNumberOfClusters()));
- return normchi2;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetMatchingChi2(const AliITStrackMI * track1,const AliITStrackMI * track2)
-{
- //
- // return matching chi2 between two tracks
- Double_t largeChi2=1000.;
-
- AliITStrackMI track3(*track2);
- if (!track3.Propagate(track1->GetAlpha(),track1->GetX())) return largeChi2;
- TMatrixD vec(5,1);
- vec(0,0)=track1->GetY() - track3.GetY();
- vec(1,0)=track1->GetZ() - track3.GetZ();
- vec(2,0)=track1->GetSnp() - track3.GetSnp();
- vec(3,0)=track1->GetTgl() - track3.GetTgl();
- vec(4,0)=track1->GetSigned1Pt() - track3.GetSigned1Pt();
- //
- TMatrixD cov(5,5);
- cov(0,0) = track1->GetSigmaY2()+track3.GetSigmaY2();
- cov(1,1) = track1->GetSigmaZ2()+track3.GetSigmaZ2();
- cov(2,2) = track1->GetSigmaSnp2()+track3.GetSigmaSnp2();
- cov(3,3) = track1->GetSigmaTgl2()+track3.GetSigmaTgl2();
- cov(4,4) = track1->GetSigma1Pt2()+track3.GetSigma1Pt2();
-
- cov(0,1)=cov(1,0) = track1->GetSigmaZY()+track3.GetSigmaZY();
- cov(0,2)=cov(2,0) = track1->GetSigmaSnpY()+track3.GetSigmaSnpY();
- cov(0,3)=cov(3,0) = track1->GetSigmaTglY()+track3.GetSigmaTglY();
- cov(0,4)=cov(4,0) = track1->GetSigma1PtY()+track3.GetSigma1PtY();
- //
- cov(1,2)=cov(2,1) = track1->GetSigmaSnpZ()+track3.GetSigmaSnpZ();
- cov(1,3)=cov(3,1) = track1->GetSigmaTglZ()+track3.GetSigmaTglZ();
- cov(1,4)=cov(4,1) = track1->GetSigma1PtZ()+track3.GetSigma1PtZ();
- //
- cov(2,3)=cov(3,2) = track1->GetSigmaTglSnp()+track3.GetSigmaTglSnp();
- cov(2,4)=cov(4,2) = track1->GetSigma1PtSnp()+track3.GetSigma1PtSnp();
- //
- cov(3,4)=cov(4,3) = track1->GetSigma1PtTgl()+track3.GetSigma1PtTgl();
-
- cov.Invert();
- TMatrixD vec2(cov,TMatrixD::kMult,vec);
- TMatrixD chi2(vec2,TMatrixD::kTransposeMult,vec);
- return chi2(0,0);
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetSPDDeadZoneProbability(Double_t zpos, Double_t zerr) const
-{
- //
- // return probability that given point (characterized by z position and error)
- // is in SPD dead zone
- // This method assumes that fSPDdetzcentre is ordered from -z to +z
- //
- Double_t probability = 0.;
- Double_t nearestz = 0.,distz=0.;
- Int_t nearestzone = -1;
- Double_t mindistz = 1000.;
-
- // find closest dead zone
- for (Int_t i=0; i<3; i++) {
- distz=TMath::Abs(zpos-0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]));
- if (distz<mindistz) {
- nearestzone=i;
- nearestz=0.5*(fSPDdetzcentre[i]+fSPDdetzcentre[i+1]);
- mindistz=distz;
- }
- }
-
- // too far from dead zone
- if (TMath::Abs(zpos-nearestz)>0.25+3.*zerr) return probability;
-
-
- Double_t zmin, zmax;
- if (nearestzone==0) { // dead zone at z = -7
- zmin = fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength();
- zmax = fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength();
- } else if (nearestzone==1) { // dead zone at z = 0
- zmin = fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength();
- zmax = fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength();
- } else if (nearestzone==2) { // dead zone at z = +7
- zmin = fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength();
- zmax = fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength();
- } else {
- zmin = 0.;
- zmax = 0.;
- }
- // probability that the true z is in the range [zmin,zmax] (i.e. inside
- // dead zone)
- probability = 0.5*( AliMathBase::ErfFast((zpos-zmin)/zerr/TMath::Sqrt(2.)) -
- AliMathBase::ErfFast((zpos-zmax)/zerr/TMath::Sqrt(2.)) );
- AliDebug(2,Form("zpos %f +- %f nearestzone %d zmin zmax %f %f prob %f\n",zpos,zerr,nearestzone,zmin,zmax,probability));
- return probability;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetTruncatedChi2(const AliITStrackMI * track, Float_t fac)
-{
- //
- // calculate normalized chi2
- Float_t chi2[6];
- Float_t *erry = GetErrY(fCurrentEsdTrack), *errz = GetErrZ(fCurrentEsdTrack);
- Float_t ncl = 0;
- for (Int_t i = 0;i<6;i++){
- if (TMath::Abs(track->GetDy(i))>0){
- chi2[i]= (track->GetDy(i)/erry[i])*(track->GetDy(i)/erry[i]);
- chi2[i]+= (track->GetDz(i)/errz[i])*(track->GetDz(i)/errz[i]);
- ncl++;
- }
- else{chi2[i]=10000;}
- }
- Int_t index[6];
- TMath::Sort(6,chi2,index,kFALSE);
- Float_t max = float(ncl)*fac-1.;
- Float_t sumchi=0, sumweight=0;
- for (Int_t i=0;i<max+1;i++){
- Float_t weight = (i<max)?1.:(max+1.-i);
- sumchi+=weight*chi2[index[i]];
- sumweight+=weight;
- }
- Double_t normchi2 = sumchi/sumweight;
- return normchi2;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetInterpolatedChi2(const AliITStrackMI * forwardtrack,const AliITStrackMI * backtrack)
-{
- //
- // calculate normalized chi2
- // if (forwardtrack->fNUsed>0.3*float(forwardtrack->GetNumberOfClusters())) return 10000;
- Int_t npoints = 0;
- Double_t res =0;
- for (Int_t i=0;i<6;i++){
- if ( (backtrack->GetSigmaY(i)<0.000000001) || (forwardtrack->GetSigmaY(i)<0.000000001)) continue;
- Double_t sy1 = forwardtrack->GetSigmaY(i);
- Double_t sz1 = forwardtrack->GetSigmaZ(i);
- Double_t sy2 = backtrack->GetSigmaY(i);
- Double_t sz2 = backtrack->GetSigmaZ(i);
- if (i<2){ sy2=1000.;sz2=1000;}
- //
- Double_t dy0 = (forwardtrack->GetDy(i)/(sy1*sy1) +backtrack->GetDy(i)/(sy2*sy2))/(1./(sy1*sy1)+1./(sy2*sy2));
- Double_t dz0 = (forwardtrack->GetDz(i)/(sz1*sz1) +backtrack->GetDz(i)/(sz2*sz2))/(1./(sz1*sz1)+1./(sz2*sz2));
- //
- Double_t nz0 = dz0*TMath::Sqrt((1./(sz1*sz1)+1./(sz2*sz2)));
- Double_t ny0 = dy0*TMath::Sqrt((1./(sy1*sy1)+1./(sy2*sy2)));
- //
- res+= nz0*nz0+ny0*ny0;
- npoints++;
- }
- if (npoints>1) return
- TMath::Max(0.3*forwardtrack->OneOverPt()-0.5,0.)+
- //2*forwardtrack->fNUsed+
- res/TMath::Max(double(npoints-forwardtrack->GetNSkipped()),
- 1./(1.+forwardtrack->GetNSkipped()));
- return 1000;
-}
-//------------------------------------------------------------------------
-Float_t *AliITStrackerMI::GetWeight(Int_t index) {
- //--------------------------------------------------------------------
- // Return pointer to a given cluster
- //--------------------------------------------------------------------
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- return fgLayers[l].GetWeight(c);
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::RegisterClusterTracks(const AliITStrackMI* track,Int_t id)
-{
- //---------------------------------------------
- // register track to the list
- //
- if (track->GetESDtrack()->GetKinkIndex(0)!=0) return; //don't register kink tracks
- //
- //
- for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
- Int_t index = track->GetClusterIndex(icluster);
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- if (c>fgLayers[l].GetNumberOfClusters()) continue;
- for (Int_t itrack=0;itrack<4;itrack++){
- if (fgLayers[l].GetClusterTracks(itrack,c)<0){
- fgLayers[l].SetClusterTracks(itrack,c,id);
- break;
- }
- }
- }
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::UnRegisterClusterTracks(const AliITStrackMI* track, Int_t id)
-{
- //---------------------------------------------
- // unregister track from the list
- for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
- Int_t index = track->GetClusterIndex(icluster);
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- if (c>fgLayers[l].GetNumberOfClusters()) continue;
- for (Int_t itrack=0;itrack<4;itrack++){
- if (fgLayers[l].GetClusterTracks(itrack,c)==id){
- fgLayers[l].SetClusterTracks(itrack,c,-1);
- }
- }
- }
-}
-//------------------------------------------------------------------------
-Float_t AliITStrackerMI::GetNumberOfSharedClusters(AliITStrackMI* track,Int_t id, Int_t list[6], AliITSRecPoint *clist[6])
-{
- //-------------------------------------------------------------
- //get number of shared clusters
- //-------------------------------------------------------------
- Float_t shared=0;
- for (Int_t i=0;i<6;i++) { list[i]=-1, clist[i]=0;}
- // mean number of clusters
- Float_t *ny = GetNy(id), *nz = GetNz(id);
-
-
- for (Int_t icluster=0;icluster<track->GetNumberOfClusters();icluster++){
- Int_t index = track->GetClusterIndex(icluster);
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- if (c>fgLayers[l].GetNumberOfClusters()) continue;
- // if (ny[l]<1.e-13){
- // printf("problem\n");
- // }
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
- Float_t weight=1;
- //
- Float_t deltan = 0;
- if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
- if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
- if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
- if (l<2 || l>3){
- deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
- }
- else{
- deltan = (cl->GetNz()-nz[l]);
- }
- if (deltan>2.0) continue; // extended - highly probable shared cluster
- weight = 2./TMath::Max(3.+deltan,2.);
- //
- for (Int_t itrack=0;itrack<4;itrack++){
- if (fgLayers[l].GetClusterTracks(itrack,c)>=0 && fgLayers[l].GetClusterTracks(itrack,c)!=id){
- list[l]=index;
- clist[l] = (AliITSRecPoint*)GetCluster(index);
- track->SetSharedWeight(l,weight);
- shared+=weight;
- break;
- }
- }
- }
- track->SetNUsed(shared);
- return shared;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::GetOverlapTrack(const AliITStrackMI *track, Int_t trackID, Int_t &shared, Int_t clusterlist[6],Int_t overlist[6])
-{
- //
- // find first shared track
- //
- // mean number of clusters
- Float_t *ny = GetNy(trackID), *nz = GetNz(trackID);
- //
- for (Int_t i=0;i<6;i++) overlist[i]=-1;
- Int_t sharedtrack=100000;
- Int_t tracks[24],trackindex=0;
- for (Int_t i=0;i<24;i++) {tracks[i]=-1;}
- //
- for (Int_t icluster=0;icluster<6;icluster++){
- if (clusterlist[icluster]<0) continue;
- Int_t index = clusterlist[icluster];
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- // if (ny[l]<1.e-13){
- // printf("problem\n");
- // }
- if (c>fgLayers[l].GetNumberOfClusters()) continue;
- //if (l>3) continue;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
- //
- Float_t deltan = 0;
- if (l>3&&cl->GetNy()+cl->GetNz()>6) continue;
- if (l>2&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(l))
- if (track->GetNormQ(l)/track->GetExpQ()>3.5) continue;
- if (l<2 || l>3){
- deltan = (cl->GetNy()+cl->GetNz()-ny[l]-nz[l]);
- }
- else{
- deltan = (cl->GetNz()-nz[l]);
- }
- if (deltan>2.0) continue; // extended - highly probable shared cluster
- //
- for (Int_t itrack=3;itrack>=0;itrack--){
- if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
- if (fgLayers[l].GetClusterTracks(itrack,c)!=trackID){
- tracks[trackindex] = fgLayers[l].GetClusterTracks(itrack,c);
- trackindex++;
- }
- }
- }
- if (trackindex==0) return -1;
- if (trackindex==1){
- sharedtrack = tracks[0];
- }else{
- if (trackindex==2) sharedtrack =TMath::Min(tracks[0],tracks[1]);
- else{
- //
- Int_t tracks2[24], cluster[24];
- for (Int_t i=0;i<24;i++){ tracks2[i]=-1; cluster[i]=0;}
- Int_t index =0;
- //
- for (Int_t i=0;i<trackindex;i++){
- if (tracks[i]<0) continue;
- tracks2[index] = tracks[i];
- cluster[index]++;
- for (Int_t j=i+1;j<trackindex;j++){
- if (tracks[j]<0) continue;
- if (tracks[j]==tracks[i]){
- cluster[index]++;
- tracks[j]=-1;
- }
- }
- index++;
- }
- Int_t max=0;
- for (Int_t i=0;i<index;i++){
- if (cluster[index]>max) {
- sharedtrack=tracks2[index];
- max=cluster[index];
- }
- }
- }
- }
-
- if (sharedtrack>=100000) return -1;
- //
- // make list of overlaps
- shared =0;
- for (Int_t icluster=0;icluster<6;icluster++){
- if (clusterlist[icluster]<0) continue;
- Int_t index = clusterlist[icluster];
- Int_t l=(index & 0xf0000000) >> 28;
- Int_t c=(index & 0x0fffffff) >> 00;
- if (c>fgLayers[l].GetNumberOfClusters()) continue;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(index);
- if (l==0 || l==1){
- if (cl->GetNy()>2) continue;
- if (cl->GetNz()>2) continue;
- }
- if (l==4 || l==5){
- if (cl->GetNy()>3) continue;
- if (cl->GetNz()>3) continue;
- }
- //
- for (Int_t itrack=3;itrack>=0;itrack--){
- if (fgLayers[l].GetClusterTracks(itrack,c)<0) continue;
- if (fgLayers[l].GetClusterTracks(itrack,c)==sharedtrack){
- overlist[l]=index;
- shared++;
- }
- }
- }
- return sharedtrack;
-}
-//------------------------------------------------------------------------
-AliITStrackMI * AliITStrackerMI::GetBest2Tracks(Int_t trackID1, Int_t trackID2, Float_t th0, Float_t th1,AliITStrackMI* original){
- //
- // try to find track hypothesys without conflicts
- // with minimal chi2;
- TClonesArray *arr1 = (TClonesArray*)fTrackHypothesys.At(trackID1);
- Int_t entries1 = arr1->GetEntriesFast();
- TClonesArray *arr2 = (TClonesArray*)fTrackHypothesys.At(trackID2);
- if (!arr2) return (AliITStrackMI*) arr1->UncheckedAt(0);
- Int_t entries2 = arr2->GetEntriesFast();
- if (entries2<=0) return (AliITStrackMI*) arr1->UncheckedAt(0);
- //
- AliITStrackMI * track10=(AliITStrackMI*) arr1->UncheckedAt(0);
- AliITStrackMI * track20=(AliITStrackMI*) arr2->UncheckedAt(0);
- if (track10->Pt()>0.5+track20->Pt()) return track10;
- //
- for (Int_t itrack=0;itrack<entries1;itrack++){
- AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
- UnRegisterClusterTracks(track,trackID1);
- }
- //
- for (Int_t itrack=0;itrack<entries2;itrack++){
- AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
- UnRegisterClusterTracks(track,trackID2);
- }
- Int_t index1=0;
- Int_t index2=0;
- Float_t maxconflicts=6;
- Double_t maxchi2 =1000.;
- //
- // get weight of hypothesys - using best hypothesy
- Double_t w1,w2;
-
- Int_t list1[6],list2[6];
- AliITSRecPoint *clist1[6], *clist2[6] ;
- RegisterClusterTracks(track10,trackID1);
- RegisterClusterTracks(track20,trackID2);
- Float_t conflict1 = GetNumberOfSharedClusters(track10,trackID1,list1,clist1);
- Float_t conflict2 = GetNumberOfSharedClusters(track20,trackID2,list2,clist2);
- UnRegisterClusterTracks(track10,trackID1);
- UnRegisterClusterTracks(track20,trackID2);
- //
- // normalized chi2
- Float_t chi21 =0,chi22=0,ncl1=0,ncl2=0;
- Float_t nerry[6],nerrz[6];
- Float_t *erry1=GetErrY(trackID1),*errz1 = GetErrZ(trackID1);
- Float_t *erry2=GetErrY(trackID2),*errz2 = GetErrZ(trackID2);
- for (Int_t i=0;i<6;i++){
- if ( (erry1[i]>0) && (erry2[i]>0)) {
- nerry[i] = TMath::Min(erry1[i],erry2[i]);
- nerrz[i] = TMath::Min(errz1[i],errz2[i]);
- }else{
- nerry[i] = TMath::Max(erry1[i],erry2[i]);
- nerrz[i] = TMath::Max(errz1[i],errz2[i]);
- }
- if (TMath::Abs(track10->GetDy(i))>0.000000000000001){
- chi21 += track10->GetDy(i)*track10->GetDy(i)/(nerry[i]*nerry[i]);
- chi21 += track10->GetDz(i)*track10->GetDz(i)/(nerrz[i]*nerrz[i]);
- ncl1++;
- }
- if (TMath::Abs(track20->GetDy(i))>0.000000000000001){
- chi22 += track20->GetDy(i)*track20->GetDy(i)/(nerry[i]*nerry[i]);
- chi22 += track20->GetDz(i)*track20->GetDz(i)/(nerrz[i]*nerrz[i]);
- ncl2++;
- }
- }
- chi21/=ncl1;
- chi22/=ncl2;
- //
- //
- Float_t d1 = TMath::Sqrt(track10->GetD(0)*track10->GetD(0)+track10->GetD(1)*track10->GetD(1))+0.1;
- Float_t d2 = TMath::Sqrt(track20->GetD(0)*track20->GetD(0)+track20->GetD(1)*track20->GetD(1))+0.1;
- Float_t s1 = TMath::Sqrt(track10->GetSigmaY2()*track10->GetSigmaZ2());
- Float_t s2 = TMath::Sqrt(track20->GetSigmaY2()*track20->GetSigmaZ2());
- //
- w1 = (d2/(d1+d2)+ 2*s2/(s1+s2)+
- +s2/(s1+s2)*0.5*(chi22+2.)/(chi21+chi22+4.)
- +1.*track10->Pt()/(track10->Pt()+track20->Pt())
- );
- w2 = (d1/(d1+d2)+ 2*s1/(s1+s2)+
- s1/(s1+s2)*0.5*(chi21+2.)/(chi21+chi22+4.)
- +1.*track20->Pt()/(track10->Pt()+track20->Pt())
- );
-
- Double_t sumw = w1+w2;
- w1/=sumw;
- w2/=sumw;
- if (w1<w2*0.5) {
- w1 = (d2+0.5)/(d1+d2+1.);
- w2 = (d1+0.5)/(d1+d2+1.);
- }
- // Float_t maxmax = w1*track10->fChi2MIP[0]+w2*track20->fChi2MIP[0]+w1*conflict1+w2*conflict2+1.;
- //Float_t maxconflicts0 = w1*conflict1+w2*conflict2;
- //
- // get pair of "best" hypothesys
- //
- Float_t * ny1 = GetNy(trackID1), * nz1 = GetNz(trackID1);
- Float_t * ny2 = GetNy(trackID2), * nz2 = GetNz(trackID2);
-
- for (Int_t itrack1=0;itrack1<entries1;itrack1++){
- AliITStrackMI * track1=(AliITStrackMI*) arr1->UncheckedAt(itrack1);
- //if (track1->fFakeRatio>0) continue;
- RegisterClusterTracks(track1,trackID1);
- for (Int_t itrack2=0;itrack2<entries2;itrack2++){
- AliITStrackMI * track2=(AliITStrackMI*) arr2->UncheckedAt(itrack2);
-
- // Float_t current = w1*track1->fChi2MIP[0]+w2*track2->fChi2MIP[0];
- //if (track2->fFakeRatio>0) continue;
- Float_t nskipped=0;
- RegisterClusterTracks(track2,trackID2);
- Float_t cconflict1 = GetNumberOfSharedClusters(track1,trackID1,list1,clist1);
- Float_t cconflict2 = GetNumberOfSharedClusters(track2,trackID2,list2,clist2);
- UnRegisterClusterTracks(track2,trackID2);
- //
- if (track1->GetConstrain()) nskipped+=w1*track1->GetNSkipped();
- if (track2->GetConstrain()) nskipped+=w2*track2->GetNSkipped();
- if (nskipped>0.5) continue;
- //
- //if ( w1*conflict1+w2*conflict2>maxconflicts0) continue;
- if (conflict1+1<cconflict1) continue;
- if (conflict2+1<cconflict2) continue;
- Float_t conflict=0;
- Float_t sumchi2=0;
- Float_t sum=0;
- for (Int_t i=0;i<6;i++){
- //
- Float_t c1 =0.; // conflict coeficients
- Float_t c2 =0.;
- if (clist1[i]&&clist2[i]){
- Float_t deltan = 0;
- if (i<2 || i>3){
- deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-TMath::Max(ny1[i],ny2[i])-TMath::Max(nz1[i],nz2[i]));
- }
- else{
- deltan = (clist1[i]->GetNz()-TMath::Max(nz1[i],nz2[i]));
- }
- c1 = 2./TMath::Max(3.+deltan,2.);
- c2 = 2./TMath::Max(3.+deltan,2.);
- }
- else{
- if (clist1[i]){
- Float_t deltan = 0;
- if (i<2 || i>3){
- deltan = (clist1[i]->GetNy()+clist1[i]->GetNz()-ny1[i]-nz1[i]);
- }
- else{
- deltan = (clist1[i]->GetNz()-nz1[i]);
- }
- c1 = 2./TMath::Max(3.+deltan,2.);
- c2 = 0;
- }
-
- if (clist2[i]){
- Float_t deltan = 0;
- if (i<2 || i>3){
- deltan = (clist2[i]->GetNy()+clist2[i]->GetNz()-ny2[i]-nz2[i]);
- }
- else{
- deltan = (clist2[i]->GetNz()-nz2[i]);
- }
- c2 = 2./TMath::Max(3.+deltan,2.);
- c1 = 0;
- }
- }
- //
- chi21=0;chi22=0;
- if (TMath::Abs(track1->GetDy(i))>0.) {
- chi21 = (track1->GetDy(i)/track1->GetSigmaY(i))*(track1->GetDy(i)/track1->GetSigmaY(i))+
- (track1->GetDz(i)/track1->GetSigmaZ(i))*(track1->GetDz(i)/track1->GetSigmaZ(i));
- //chi21 = (track1->fDy[i]*track1->fDy[i])/(nerry[i]*nerry[i])+
- // (track1->GetDz(i)*track1->GetDz(i))/(nerrz[i]*nerrz[i]);
- }else{
- if (TMath::Abs(track1->GetSigmaY(i)>0.)) c1=1;
- }
- //
- if (TMath::Abs(track2->GetDy(i))>0.) {
- chi22 = (track2->GetDy(i)/track2->GetSigmaY(i))*(track2->GetDy(i)/track2->GetSigmaY(i))+
- (track2->GetDz(i)/track2->GetSigmaZ(i))*(track2->GetDz(i)/track2->GetSigmaZ(i));
- //chi22 = (track2->fDy[i]*track2->fDy[i])/(nerry[i]*nerry[i])+
- // (track2->fDz[i]*track2->fDz[i])/(nerrz[i]*nerrz[i]);
- }
- else{
- if (TMath::Abs(track2->GetSigmaY(i)>0.)) c2=1;
- }
- sumchi2+=w1*(1.+c1)*(1+c1)*(chi21+c1)+w2*(1.+c2)*(1+c2)*(chi22+c2);
- if (chi21>0) sum+=w1;
- if (chi22>0) sum+=w2;
- conflict+=(c1+c2);
- }
- Double_t norm = sum-w1*track1->GetNSkipped()-w2*track2->GetNSkipped();
- if (norm<0) norm =1/(w1*track1->GetNSkipped()+w2*track2->GetNSkipped());
- Double_t normchi2 = 2*conflict+sumchi2/sum;
- if ( normchi2 <maxchi2 ){
- index1 = itrack1;
- index2 = itrack2;
- maxconflicts = conflict;
- maxchi2 = normchi2;
- }
- }
- UnRegisterClusterTracks(track1,trackID1);
- }
- //
- // if (maxconflicts<4 && maxchi2<th0){
- if (maxchi2<th0*2.){
- Float_t orig = track10->GetFakeRatio()*track10->GetNumberOfClusters();
- AliITStrackMI* track1=(AliITStrackMI*) arr1->UncheckedAt(index1);
- track1->SetChi2MIP(5,maxconflicts);
- track1->SetChi2MIP(6,maxchi2);
- track1->SetChi2MIP(7,0.01+orig-(track1->GetFakeRatio()*track1->GetNumberOfClusters()));
- // track1->UpdateESDtrack(AliESDtrack::kITSin);
- track1->SetChi2MIP(8,index1);
- fBestTrackIndex[trackID1] =index1;
- UpdateESDtrack(track1, AliESDtrack::kITSin);
- original->SetWinner(track1);
- }
- else if (track10->GetChi2MIP(0)<th1){
- track10->SetChi2MIP(5,maxconflicts);
- track10->SetChi2MIP(6,maxchi2);
- // track10->UpdateESDtrack(AliESDtrack::kITSin);
- UpdateESDtrack(track10,AliESDtrack::kITSin);
- original->SetWinner(track10);
- }
-
- for (Int_t itrack=0;itrack<entries1;itrack++){
- AliITStrackMI * track=(AliITStrackMI*) arr1->UncheckedAt(itrack);
- UnRegisterClusterTracks(track,trackID1);
- }
- //
- for (Int_t itrack=0;itrack<entries2;itrack++){
- AliITStrackMI * track=(AliITStrackMI*) arr2->UncheckedAt(itrack);
- UnRegisterClusterTracks(track,trackID2);
- }
-
- if (track10->GetConstrain()&&track10->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
- &&track10->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
- // if (track10->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track10->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
- // &&track10->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track10->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
- RegisterClusterTracks(track10,trackID1);
- }
- if (track20->GetConstrain()&&track20->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
- &&track20->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
- //if (track20->fChi2MIP[0]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track20->fChi2MIP[1]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
- // &&track20->fChi2MIP[2]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&track20->fChi2MIP[3]<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
- RegisterClusterTracks(track20,trackID2);
- }
- return track10;
-
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::UseClusters(const AliKalmanTrack *t, Int_t from) const {
- //--------------------------------------------------------------------
- // This function marks clusters assigned to the track
- //--------------------------------------------------------------------
- AliTracker::UseClusters(t,from);
-
- AliITSRecPoint *c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(0));
- //if (c->GetQ()>2) c->Use();
- if (c->GetSigmaZ2()>0.1) c->Use();
- c=(AliITSRecPoint *)GetCluster(t->GetClusterIndex(1));
- //if (c->GetQ()>2) c->Use();
- if (c->GetSigmaZ2()>0.1) c->Use();
-
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::AddTrackHypothesys(AliITStrackMI * track, Int_t esdindex)
-{
- //------------------------------------------------------------------
- // add track to the list of hypothesys
- //------------------------------------------------------------------
-
- //
- TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
- if (!array) {
- array = new TObjArray(10);
- fTrackHypothesys.AddAtAndExpand(array,esdindex);
- }
- array->AddLast(track);
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::SortTrackHypothesys(Int_t esdindex, Int_t maxcut, Int_t mode)
-{
- //-------------------------------------------------------------------
- // compress array of track hypothesys
- // keep only maxsize best hypothesys
- //-------------------------------------------------------------------
- if (esdindex>fTrackHypothesys.GetEntriesFast()) return;
- if (! (fTrackHypothesys.At(esdindex)) ) return;
- TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
- Int_t entries = array->GetEntriesFast();
- //
- //- find preliminary besttrack as a reference
- Float_t minchi2=10000;
- Int_t maxn=0;
- AliITStrackMI * besttrack=0;
- //
- for (Int_t itrack=0;itrack<array->GetEntriesFast();itrack++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
- if (!track) continue;
- Float_t chi2 = NormalizedChi2(track,0);
- //
- Int_t tpcLabel=track->GetESDtrack()->GetTPCLabel();
- track->SetLabel(tpcLabel);
- CookdEdx(track);
- track->SetFakeRatio(1.);
- CookLabel(track,0.); //For comparison only
- //
- //if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&track->fFakeRatio==0){
- if (chi2<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
- if (track->GetNumberOfClusters()<maxn) continue;
- maxn = track->GetNumberOfClusters();
- // if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2 *= track->GetChi2MIP(3); // RS
- if (chi2<minchi2){
- minchi2=chi2;
- besttrack=track;
- }
- }
- else{
- if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
- delete array->RemoveAt(itrack);
- }
- }
- }
- if (!besttrack) return;
- //
- //
- //take errors of best track as a reference
- Float_t *erry = GetErrY(esdindex), *errz = GetErrZ(esdindex);
- Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
- for (Int_t j=0;j<6;j++) {
- if (besttrack->GetClIndex(j)>=0){
- erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
- errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
- ny[j] = besttrack->GetNy(j);
- nz[j] = besttrack->GetNz(j);
- }
- }
- //
- // calculate normalized chi2
- //
- Float_t * chi2 = new Float_t[entries];
- Int_t * index = new Int_t[entries];
- for (Int_t i=0;i<entries;i++) chi2[i] =10000;
- for (Int_t itrack=0;itrack<entries;itrack++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
- if (track){
- AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
- double chi2t = GetNormalizedChi2(track, mode);
- track->SetChi2MIP(0,chi2t);
- if (chi2t<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
- if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
- chi2[itrack] = chi2t;
- }
- else{
- if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
- delete array->RemoveAt(itrack);
- }
- }
- }
- }
- //
- TMath::Sort(entries,chi2,index,kFALSE);
- besttrack = (AliITStrackMI*)array->At(index[0]);
- if(besttrack) AliDebug(2,Form("ncls best track %d\n",besttrack->GetNumberOfClusters()));
- if (besttrack&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)){
- for (Int_t j=0;j<6;j++){
- if (besttrack->GetClIndex(j)>=0){
- erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
- errz[j] = besttrack->GetSigmaZ(j); erry[j+6] = besttrack->GetSigmaY(j+6);
- ny[j] = besttrack->GetNy(j);
- nz[j] = besttrack->GetNz(j);
- }
- }
- }
- //
- // calculate one more time with updated normalized errors
- for (Int_t i=0;i<entries;i++) chi2[i] =10000;
- for (Int_t itrack=0;itrack<entries;itrack++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
- if (track){
- double chi2t = GetNormalizedChi2(track, mode);
- track->SetChi2MIP(0,chi2t);
- AliDebug(2,Form("track %d ncls %d\n",itrack,track->GetNumberOfClusters()));
- if (track->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)) {
- if (fSelectBestMIP03 && track->GetChi2MIP(3)>0) chi2t *= track->GetChi2MIP(3); // RS
- chi2[itrack] = chi2t; //-0*(track->GetNumberOfClusters()+track->GetNDeadZone());
- }
- else {
- if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
- delete array->RemoveAt(itrack);
- }
- }
- }
- }
- entries = array->GetEntriesFast();
- //
- //
- if (entries>0){
- TObjArray * newarray = new TObjArray();
- TMath::Sort(entries,chi2,index,kFALSE);
- besttrack = (AliITStrackMI*)array->At(index[0]);
- if (besttrack){
- AliDebug(2,Form("ncls best track %d %f %f\n",besttrack->GetNumberOfClusters(),besttrack->GetChi2MIP(0),chi2[index[0]]));
- //
- for (Int_t j=0;j<6;j++){
- if (besttrack->GetNz(j)>0&&besttrack->GetNy(j)>0){
- erry[j] = besttrack->GetSigmaY(j); erry[j+6] = besttrack->GetSigmaY(j+6);
- errz[j] = besttrack->GetSigmaZ(j); errz[j+6] = besttrack->GetSigmaZ(j+6);
- ny[j] = besttrack->GetNy(j);
- nz[j] = besttrack->GetNz(j);
- }
- }
- besttrack->SetChi2MIP(0,GetNormalizedChi2(besttrack,mode));
- minchi2 = TMath::Min(besttrack->GetChi2MIP(0)+5.+besttrack->GetNUsed(), double(AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)));
- Float_t minn = besttrack->GetNumberOfClusters()-3;
- Int_t accepted=0;
- for (Int_t i=0;i<entries;i++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(index[i]);
- if (!track) continue;
- if (accepted>maxcut) break;
- track->SetChi2MIP(0,GetNormalizedChi2(track,mode));
- if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
- if (track->GetNumberOfClusters()<6 && (track->GetChi2MIP(0)+track->GetNUsed()>minchi2)){
- delete array->RemoveAt(index[i]);
- continue;
- }
- }
- Bool_t shortbest = !track->GetConstrain() && track->GetNumberOfClusters()<6;
- if ((track->GetChi2MIP(0)+track->GetNUsed()<minchi2 && track->GetNumberOfClusters()>=minn) ||shortbest){
- if (!shortbest) accepted++;
- //
- newarray->AddLast(array->RemoveAt(index[i]));
- for (Int_t j=0;j<6;j++){
- if (nz[j]==0){
- erry[j] = track->GetSigmaY(j); erry[j+6] = track->GetSigmaY(j+6);
- errz[j] = track->GetSigmaZ(j); errz[j] = track->GetSigmaZ(j+6);
- ny[j] = track->GetNy(j);
- nz[j] = track->GetNz(j);
- }
- }
- }
- else{
- delete array->RemoveAt(index[i]);
- }
- }
- array->Delete();
- delete fTrackHypothesys.RemoveAt(esdindex);
- fTrackHypothesys.AddAt(newarray,esdindex);
- }
- else{
- array->Delete();
- delete fTrackHypothesys.RemoveAt(esdindex);
- }
- }
- delete [] chi2;
- delete [] index;
-}
-//------------------------------------------------------------------------
-AliITStrackMI * AliITStrackerMI::GetBestHypothesys(Int_t esdindex, AliITStrackMI * original, Int_t checkmax)
-{
- //-------------------------------------------------------------
- // try to find best hypothesy
- // currently - minimal chi2 of track+backpropagated track+matching to the tpc track
- // RS: optionally changing this to product of Chi2MIP(0)*Chi2MIP(3) == (chi2*chi2_interpolated)
- //-------------------------------------------------------------
- if (fTrackHypothesys.GetEntriesFast()<=esdindex) return 0;
- TObjArray * array = (TObjArray*) fTrackHypothesys.At(esdindex);
- if (!array) return 0;
- Int_t entries = array->GetEntriesFast();
- if (!entries) return 0;
- Float_t minchi2 = 100000;
- AliITStrackMI * besttrack=0;
- //
- AliITStrackMI * backtrack = new AliITStrackMI(*original);
- AliITStrackMI * forwardtrack = new AliITStrackMI(*original);
- Double_t xyzVtx[]={GetX(),GetY(),GetZ()};
- Double_t ersVtx[]={GetSigmaX()/3.,GetSigmaY()/3.,GetSigmaZ()/3.};
- //
- for (Int_t i=0;i<entries;i++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(i);
- if (!track) continue;
- Float_t sigmarfi,sigmaz;
- GetDCASigma(track,sigmarfi,sigmaz);
- track->SetDnorm(0,sigmarfi);
- track->SetDnorm(1,sigmaz);
- //
- track->SetChi2MIP(1,1000000);
- track->SetChi2MIP(2,1000000);
- track->SetChi2MIP(3,1000000);
- //
- // backtrack
- backtrack = new(backtrack) AliITStrackMI(*track);
- if (track->GetConstrain()) {
- if (!CorrectForPipeMaterial(backtrack,"inward")) continue;
- if (AliITSReconstructor::GetRecoParam()->GetImproveWithVertex()) {
- if (fUseImproveKalman) {if (!backtrack->ImproveKalman(xyzVtx,ersVtx,0,0,0)) continue;}
- else {if (!backtrack->Improve(0,xyzVtx,ersVtx)) continue;}
- }
- backtrack->ResetCovariance(10.);
- }else{
- backtrack->ResetCovariance(10.);
- }
- backtrack->ResetClusters();
-
- Double_t x = original->GetX();
- if (!RefitAt(x,backtrack,track)) continue;
- //
- track->SetChi2MIP(1,NormalizedChi2(backtrack,0));
- //for (Int_t i=2;i<6;i++){track->fDy[i]+=backtrack->fDy[i]; track->fDz[i]+=backtrack->fDz[i];}
- if (track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)*6.) continue;
- track->SetChi22(GetMatchingChi2(backtrack,original));
-
- if ((track->GetConstrain()) && track->GetChi22()>90.) continue;
- if ((!track->GetConstrain()) && track->GetChi22()>30.) continue;
- if ( track->GetChi22()/track->GetNumberOfClusters()>11.) continue;
-
-
- if (!(track->GetConstrain())&&track->GetChi2MIP(1)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)) continue;
- //
- //forward track - without constraint
- forwardtrack = new(forwardtrack) AliITStrackMI(*original);
- forwardtrack->ResetClusters();
- x = track->GetX();
- if (!RefitAt(x,forwardtrack,track) && fSelectBestMIP03) continue; // w/o fwd track MIP03 is meaningless
- track->SetChi2MIP(2,NormalizedChi2(forwardtrack,0));
- if (track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)*6.0) continue;
- if (!(track->GetConstrain())&&track->GetChi2MIP(2)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)) continue;
-
- //track->fD[0] = forwardtrack->GetD(GetX(),GetY());
- //track->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
- forwardtrack->GetDZ(GetX(),GetY(),GetZ(),track->GetDP()); //I.B.
- forwardtrack->SetD(0,track->GetD(0));
- forwardtrack->SetD(1,track->GetD(1));
- {
- Int_t list[6];
- AliITSRecPoint* clist[6];
- track->SetChi2MIP(4,GetNumberOfSharedClusters(track,esdindex,list,clist));
- if ( (!track->GetConstrain()) && track->GetChi2MIP(4)>1.0) continue;
- }
-
- track->SetChi2MIP(3,GetInterpolatedChi2(forwardtrack,backtrack));
- if ( (track->GetChi2MIP(3)>6.*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) continue;
- if ( (!track->GetConstrain()) && (track->GetChi2MIP(3)>2*AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3))) {
- track->SetChi2MIP(3,1000);
- continue;
- }
- Double_t chi2 = track->GetChi2MIP(0); // +track->GetNUsed(); //RS
- if (fSelectBestMIP03) chi2 *= track->GetChi2MIP(3);
- else chi2 += track->GetNUsed();
- //
- for (Int_t ichi=0;ichi<5;ichi++){
- forwardtrack->SetChi2MIP(ichi, track->GetChi2MIP(ichi));
- }
- if (chi2 < minchi2){
- //besttrack = new AliITStrackMI(*forwardtrack);
- besttrack = track;
- besttrack->SetLabel(track->GetLabel());
- besttrack->SetFakeRatio(track->GetFakeRatio());
- minchi2 = chi2;
- //original->fD[0] = forwardtrack->GetD(GetX(),GetY());
- //original->fD[1] = forwardtrack->GetZat(GetX())-GetZ();
- forwardtrack->GetDZ(GetX(),GetY(),GetZ(),original->GetDP()); //I.B.
- }
- }
- delete backtrack;
- delete forwardtrack;
-
- if (!besttrack) return 0;
-
- Int_t accepted=0;
- for (Int_t i=0;i<entries;i++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(i);
-
- if (!track) continue;
-
- if (accepted>checkmax || track->GetChi2MIP(3)>AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)*6. ||
- (track->GetNumberOfClusters()<besttrack->GetNumberOfClusters()-1.)
- // RS: don't apply this cut when fSelectBestMIP03 is on
- || (!fSelectBestMIP03 && (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*besttrack->GetNUsed()+3.))
- ){
- if (track->GetConstrain() || track->GetNumberOfClusters()>5){ //keep best short tracks - without vertex constrain
- delete array->RemoveAt(i);
- continue;
- }
- }
- else{
- accepted++;
- }
- }
- //
- array->Compress();
- SortTrackHypothesys(esdindex,checkmax,1);
-
- array = (TObjArray*) fTrackHypothesys.At(esdindex);
- if (!array) return 0; // PH What can be the reason? Check SortTrackHypothesys
- besttrack = (AliITStrackMI*)array->At(0);
- if (!besttrack) return 0;
- besttrack->SetChi2MIP(8,0);
- fBestTrackIndex[esdindex]=0;
- entries = array->GetEntriesFast();
- AliITStrackMI *longtrack =0;
- minchi2 =1000;
- Float_t minn=besttrack->GetNumberOfClusters()+besttrack->GetNDeadZone();
- for (Int_t itrack=entries-1;itrack>0;itrack--) {
- AliITStrackMI * track = (AliITStrackMI*)array->At(itrack);
- if (!track->GetConstrain()) continue;
- if (track->GetNumberOfClusters()+track->GetNDeadZone()<minn) continue;
- if (track->GetChi2MIP(0)-besttrack->GetChi2MIP(0)>0.0) continue;
- if (track->GetChi2MIP(0)>4.) continue;
- minn = track->GetNumberOfClusters()+track->GetNDeadZone();
- longtrack =track;
- }
- //if (longtrack) besttrack=longtrack;
- //
- // RS do shared cluster analysis here only if the new sharing analysis is not requested
- //RRR if (fFlagFakes) return besttrack;
-
- Int_t list[6];
- AliITSRecPoint * clist[6];
- Float_t shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
- if (besttrack->GetConstrain()&&besttrack->GetChi2MIP(0)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(0)&&besttrack->GetChi2MIP(1)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(1)
- &&besttrack->GetChi2MIP(2)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(2)&&besttrack->GetChi2MIP(3)<AliITSReconstructor::GetRecoParam()->GetMaxChi2PerCluster(3)){
- RegisterClusterTracks(besttrack,esdindex);
- }
- //
- //
- if (shared>0.0){
- Int_t nshared;
- Int_t overlist[6];
- Int_t sharedtrack = GetOverlapTrack(besttrack, esdindex, nshared, list, overlist);
- if (sharedtrack>=0){
- //
- besttrack = GetBest2Tracks(esdindex,sharedtrack,10,5.5,original);
- if (besttrack){
- shared = GetNumberOfSharedClusters(besttrack,esdindex,list,clist);
- }
- else return 0;
- }
- }
-
- if (shared>2.5) return 0;
- if (shared>1.0) return besttrack;
- //
- // Don't sign clusters if not gold track
- //
- if (!besttrack->IsGoldPrimary()) return besttrack;
- if (besttrack->GetESDtrack()->GetKinkIndex(0)!=0) return besttrack; //track belong to kink
- //
- if (fConstraint[fPass]){
- //
- // sign clusters
- //
- Float_t *ny = GetNy(esdindex), *nz = GetNz(esdindex);
- for (Int_t i=0;i<6;i++){
- Int_t index = besttrack->GetClIndex(i);
- if (index<0) continue;
- Int_t ilayer = (index & 0xf0000000) >> 28;
- if (besttrack->GetSigmaY(ilayer)<0.00000000001) continue;
- AliITSRecPoint *c = (AliITSRecPoint*)GetCluster(index);
- if (!c) continue;
- if (ilayer>3&&c->GetNy()+c->GetNz()>6) continue;
- if ( (c->GetNy()+c->GetNz() )> ny[i]+nz[i]+0.7) continue; //shared track
- if ( c->GetNz()> nz[i]+0.7) continue; //shared track
- if ( ilayer>2&& AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(ilayer))
- if (besttrack->GetNormQ(ilayer)/besttrack->GetExpQ()>1.5) continue;
- //if ( c->GetNy()> ny[i]+0.7) continue; //shared track
-
- Bool_t cansign = kTRUE;
- for (Int_t itrack=0;itrack<entries; itrack++){
- AliITStrackMI * track = (AliITStrackMI*)array->At(i);
- if (!track) continue;
- if (track->GetChi2MIP(0)>besttrack->GetChi2MIP(0)+2.*shared+1.) break;
- if ( (track->GetClIndex(ilayer)>=0) && (track->GetClIndex(ilayer)!=besttrack->GetClIndex(ilayer))){
- cansign = kFALSE;
- break;
- }
- }
- if (cansign){
- if (TMath::Abs(besttrack->GetDy(ilayer)/besttrack->GetSigmaY(ilayer))>3.) continue;
- if (TMath::Abs(besttrack->GetDz(ilayer)/besttrack->GetSigmaZ(ilayer))>3.) continue;
- if (!c->IsUsed()) c->Use();
- }
- }
- }
- return besttrack;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::GetBestHypothesysMIP(TObjArray &itsTracks)
-{
- //
- // get "best" hypothesys
- //
-
- Int_t nentries = itsTracks.GetEntriesFast();
- for (Int_t i=0;i<nentries;i++){
- AliITStrackMI* track = (AliITStrackMI*)itsTracks.At(i);
- if (!track) continue;
- TObjArray * array = (TObjArray*) fTrackHypothesys.At(i);
- if (!array) continue;
- if (array->GetEntriesFast()<=0) continue;
- //
- AliITStrackMI* longtrack=0;
- Float_t minn=0;
- Float_t maxchi2=1000;
- for (Int_t j=0;j<array->GetEntriesFast();j++){
- AliITStrackMI* trackHyp = (AliITStrackMI*)array->At(j);
- if (!trackHyp) continue;
- if (trackHyp->GetGoldV0()) {
- longtrack = trackHyp; //gold V0 track taken
- break;
- }
- if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()<minn) continue;
- Float_t chi2 = trackHyp->GetChi2MIP(0);
- if (fSelectBestMIP03) chi2 *= trackHyp->GetChi2MIP(3);
- if (trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone()>minn) maxchi2 = chi2; //trackHyp->GetChi2MIP(0);
- //
- if (fAfterV0){ // ??? RS
- if (!trackHyp->GetGoldV0()&&trackHyp->GetConstrain()==kFALSE) chi2+=5;
- }
- if (chi2 > maxchi2) continue;
- minn = trackHyp->GetNumberOfClusters()+trackHyp->GetNDeadZone();
- if (fSelectBestMIP03) minn++; // allow next to longest to win
- maxchi2 = chi2;
- longtrack=trackHyp;
- }
- //
- //
- //
- AliITStrackMI * besttrack = (AliITStrackMI*)array->At(0);
- if (!longtrack) {longtrack = besttrack;}
- else besttrack= longtrack;
- //
- if (besttrack) {
- Int_t list[6];
- AliITSRecPoint * clist[6];
- Float_t shared = GetNumberOfSharedClusters(longtrack,i,list,clist);
- //
- track->SetNUsed(shared);
- track->SetNSkipped(besttrack->GetNSkipped());
- track->SetChi2MIP(0,besttrack->GetChi2MIP(0));
- if (shared>0) {
- if(!AliITSReconstructor::GetRecoParam()->GetAllowSharedClusters()) continue;
- Int_t nshared;
- Int_t overlist[6];
- //
- Int_t sharedtrack = GetOverlapTrack(longtrack, i, nshared, list, overlist);
- //if (sharedtrack==-1) sharedtrack=0;
- if (sharedtrack>=0) {
- besttrack = GetBest2Tracks(i,sharedtrack,10,5.5,track);
- }
- }
- if (besttrack&&fAfterV0) {
- UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- track->SetWinner(besttrack);
- }
- if (besttrack) {
- if (fConstraint[fPass]) {
- UpdateESDtrack(besttrack,AliESDtrack::kITSin);
- track->SetWinner(besttrack);
- }
- if (besttrack->GetChi2MIP(0)+besttrack->GetNUsed()>1.5 && fConstraint[fPass]) {
- if ( TMath::Abs(besttrack->GetD(0))>0.1 ||
- TMath::Abs(besttrack->GetD(1))>0.1 ) track->SetReconstructed(kFALSE);
- }
- }
- }
- }
-}
-
-//------------------------------------------------------------------------
-void AliITStrackerMI::FlagFakes(const TObjArray &itsTracks)
-{
- //
- // RS: flag those tracks which are suxpected to have fake clusters
- //
- const double kThreshPt = 0.5;
- AliRefArray *refArr[6];
- //
- for (int i=0;i<6;i++) {
- int ncl = fgLayers[i].GetNumberOfClusters();
- refArr[i] = new AliRefArray(ncl,TMath::Min(ncl,1000));
- }
- Int_t nentries = itsTracks.GetEntriesFast();
- //
- // fill cluster->track associations
- for (Int_t itr=0;itr<nentries;itr++){
- AliITStrackMI* track = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
- if (!track) continue;
- AliITStrackMI* trackITS = track->GetWinner();
- if (!trackITS) continue;
- for (int il=trackITS->GetNumberOfClusters();il--;) {
- int idx = trackITS->GetClusterIndex(il);
- Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
- // if (c>fgLayers[l].GetNumberOfClusters()) continue;
- refArr[l]->AddReference(c, itr);
- }
- }
- //
- const UInt_t kMaxRef = 100;
- UInt_t crefs[kMaxRef];
- Int_t ncrefs=0;
- // process tracks with shared clusters
- for (int itr=0;itr<nentries;itr++){
- AliITStrackMI* track0 = (AliITStrackMI*)itsTracks.UncheckedAt(itr);
- AliITStrackMI* trackH0 = track0->GetWinner();
- if (!trackH0) continue;
- AliESDtrack* esd0 = track0->GetESDtrack();
- //
- for (int il=0;il<trackH0->GetNumberOfClusters();il++) {
- int idx = trackH0->GetClusterIndex(il);
- Int_t l=(idx & 0xf0000000) >> 28, c=(idx & 0x0fffffff) >> 00;
- ncrefs = refArr[l]->GetReferences(c,crefs,kMaxRef);
- if (ncrefs<2) continue; // there will be always self-reference, for sharing needs at least 2
- esd0->SetITSSharedFlag(l);
- for (int ir=ncrefs;ir--;) {
- if (int(crefs[ir]) <= itr) continue; // ==:selfreference, <: the same pair will be checked with >
- AliITStrackMI* track1 = (AliITStrackMI*)itsTracks.UncheckedAt(crefs[ir]);
- AliITStrackMI* trackH1 = track1->GetWinner();
- AliESDtrack* esd1 = track1->GetESDtrack();
- esd1->SetITSSharedFlag(l);
- //
- double pt0 = trackH0->Pt(), pt1 = trackH1->Pt(), res = 0.;
- if (pt0>kThreshPt && pt0-pt1>0.2+0.2*(pt0-kThreshPt) ) res = -100;
- else if (pt1>kThreshPt && pt1-pt0>0.2+0.2*(pt1-kThreshPt) ) res = 100;
-
- // select the one with smallest chi2's product
- res += trackH0->GetChi2MIP(0)*trackH0->GetChi2MIP(3);
- res -= trackH1->GetChi2MIP(0)*trackH1->GetChi2MIP(3);
- //
- if (res<0) esd1->SetITSFakeFlag(); // esd0 is winner
- else esd0->SetITSFakeFlag(); // esd1 is winner
- }
- //
- }
- //
- }
- //
- for (int i=6;i--;) delete refArr[i];
-}
-
-
-
-//------------------------------------------------------------------------
-void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
- //--------------------------------------------------------------------
- //This function "cooks" a track label. If label<0, this track is fake.
- //--------------------------------------------------------------------
- const int kMaxLbPerCl = 3;
- int lbID[36],lbStat[36];
- Int_t nLab=0, nCl = track->GetNumberOfClusters();
- //
- // track->SetLabel(-1);
- // track->SetFakeRatio(0);
- //
- for (Int_t i=0;i<nCl;i++) { // fill all labels
- Int_t cindex = track->GetClusterIndex(i);
- // Int_t l=(cindex & 0xf0000000) >> 28;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
- //
- for (int imc=0;imc<kMaxLbPerCl;imc++) { // labels within single cluster
- int trLb = cl->GetLabel(imc);
- if (trLb<0) break;
- // search this mc track in already accounted ones
- int iLab;
- for (iLab=0;iLab<nLab;iLab++) if (lbID[iLab]==trLb) break;
- if (iLab<nLab) lbStat[iLab]++;
- else {
- lbID[nLab] = trLb;
- lbStat[nLab++] = 1;
- }
- } // loop over given cluster's labels
- } // loop over clusters
- //
- if (nLab<1) return; // no labels at all
- //
- Int_t tpcLabel=-1;
- if (track->GetESDtrack() && track->GetESDtrack()->IsOn(AliESDtrack::kTPCin)){
- tpcLabel = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
- }
- //
- // find majority label
- if (nCl && nLab) {
- int maxLab=0,tpcLabID=-1;
- for (int ilb=nLab;ilb--;) {
- int st = lbStat[ilb];
- if (lbStat[maxLab]<st) maxLab = ilb;
- if (lbID[ilb] == tpcLabel) tpcLabID = ilb;
- }
- // if there is an equal choice, prefer ITS label consistent with TPC label
- if (tpcLabel>0 && (tpcLabID!=maxLab) && lbStat[maxLab]==lbStat[tpcLabID]) maxLab=tpcLabID;
-
- track->SetFakeRatio(1.-float(lbStat[maxLab])/nCl);
- track->SetLabel( lbStat[maxLab]>=nCl-wrong ? lbID[maxLab] : -lbID[maxLab]);
- }
- //
-}
-
-/*
-//------------------------------------------------------------------------
-void AliITStrackerMI::CookLabel(AliITStrackMI *track,Float_t wrong) const {
- //--------------------------------------------------------------------
- //This function "cooks" a track label. If label<0, this track is fake.
- //--------------------------------------------------------------------
- Int_t tpcLabel=-1;
-
- if (track->GetESDtrack()){
- tpcLabel = track->GetESDtrack()->GetTPCLabel();
- ULong_t trStatus=track->GetESDtrack()->GetStatus();
- if(!(trStatus&AliESDtrack::kTPCin)) tpcLabel=track->GetLabel(); // for ITSsa tracks
- }
- track->SetChi2MIP(9,0);
- Int_t nwrong=0;
- for (Int_t i=0;i<track->GetNumberOfClusters();i++){
- Int_t cindex = track->GetClusterIndex(i);
- Int_t l=(cindex & 0xf0000000) >> 28;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
- Int_t isWrong=1;
- for (Int_t ind=0;ind<3;ind++){
- if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
- //AliDebug(2,Form("icl %d ilab %d lab %d",i,ind,cl->GetLabel(ind)));
- }
- track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
- nwrong+=isWrong;
- }
- Int_t nclusters = track->GetNumberOfClusters();
- if (nclusters > 0) //PH Some tracks don't have any cluster
- track->SetFakeRatio(double(nwrong)/double(nclusters));
- if (tpcLabel>0 && track->GetFakeRatio()>wrong) {
- track->SetLabel(-tpcLabel);
- } else {
- track->SetLabel(tpcLabel);
- }
- AliDebug(2,Form(" nls %d wrong %d label %d tpcLabel %d\n",nclusters,nwrong,track->GetLabel(),tpcLabel));
-}
-*/
-
-//------------------------------------------------------------------------
-void AliITStrackerMI::CookdEdx(AliITStrackMI* track){
- //
- // Fill the dE/dx in this track
- //
- track->SetChi2MIP(9,0);
- for (Int_t i=0;i<track->GetNumberOfClusters();i++){
- Int_t cindex = track->GetClusterIndex(i);
- Int_t l=(cindex & 0xf0000000) >> 28;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
- Int_t lab = TMath::Abs(track->GetESDtrack()->GetTPCLabel());
- Int_t isWrong=1;
- for (Int_t ind=0;ind<3;ind++){
- if (cl->GetLabel(ind)==lab) isWrong=0;
- }
- track->SetChi2MIP(9,track->GetChi2MIP(9)+isWrong*(2<<l));
- }
- Double_t low=0.;
- Double_t up=0.51;
- track->CookdEdx(low,up);
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::MakeCoefficients(Int_t ntracks){
- //
- // Create some arrays
- //
- if (fCoefficients) delete []fCoefficients;
- fCoefficients = new Float_t[ntracks*48];
- for (Int_t i=0;i<ntracks*48;i++) fCoefficients[i]=-1.;
-}
-//------------------------------------------------------------------------
-Double_t AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
-{
- //
- // Compute predicted chi2
- //
- // Take into account the mis-alignment (bring track to cluster plane)
- Double_t xTrOrig=track->GetX();
- if (!track->Propagate(xTrOrig+cluster->GetX())) return 1000.;
- Float_t erry,errz,covyz;
- Float_t theta = track->GetTgl();
- Float_t phi = track->GetSnp();
- phi *= TMath::Sqrt(1./((1.-phi)*(1.+phi)));
- AliITSClusterParam::GetError(layer,cluster,theta,phi,track->GetExpQ(),erry,errz,covyz);
- AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
- AliDebug(2,Form(" chi2: tr-cl %f %f tr X %f cl X %f",track->GetY()-cluster->GetY(),track->GetZ()-cluster->GetZ(),track->GetX(),cluster->GetX()));
- Double_t chi2 = track->GetPredictedChi2MI(cluster->GetY(),cluster->GetZ(),erry,errz,covyz);
- // Bring the track back to detector plane in ideal geometry
- // [mis-alignment will be accounted for in UpdateMI()]
- if (!track->Propagate(xTrOrig)) return 1000.;
- Float_t ny,nz;
- AliITSClusterParam::GetNTeor(layer,cluster,theta,phi,ny,nz);
- Double_t delta = cluster->GetNy()+cluster->GetNz()-nz-ny;
- if (delta>1){
- chi2+=0.5*TMath::Min(delta/2,2.);
- chi2+=2.*cluster->GetDeltaProbability();
- }
- //
- track->SetNy(layer,ny);
- track->SetNz(layer,nz);
- track->SetSigmaY(layer,erry);
- track->SetSigmaZ(layer, errz);
- track->SetSigmaYZ(layer,covyz);
- //track->fNormQ[layer] = cluster->GetQ()/TMath::Sqrt(1+theta*theta+phi*phi);
- track->SetNormQ(layer,cluster->GetQ()/TMath::Sqrt((1.+ track->GetTgl()*track->GetTgl())/((1.-track->GetSnp())*(1.+track->GetSnp()))));
- return chi2;
-
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::UpdateMI(AliITStrackMI* track, const AliITSRecPoint* cl,Double_t chi2,Int_t index) const
-{
- //
- // Update ITS track
- //
- Int_t layer = (index & 0xf0000000) >> 28;
- track->SetClIndex(layer, index);
- if (layer>1&&AliITSReconstructor::GetRecoParam()->GetUseAmplitudeInfo(layer)) {
- if (track->GetNormQ(layer)/track->GetExpQ()<0.5 ) {
- chi2+= (0.5-track->GetNormQ(layer)/track->GetExpQ())*10.;
- track->SetdEdxMismatch(track->GetdEdxMismatch()+(0.5-track->GetNormQ(layer)/track->GetExpQ())*10.);
- }
- }
-
- if (TMath::Abs(cl->GetQ())<1.e-13) return 0; // ingore the "virtual" clusters
-
-
- // Take into account the mis-alignment (bring track to cluster plane)
- Double_t xTrOrig=track->GetX();
- Float_t clxyz[3]; cl->GetGlobalXYZ(clxyz);Double_t trxyz[3]; track->GetXYZ(trxyz);
- AliDebug(2,Form("gtr %f %f %f",trxyz[0],trxyz[1],trxyz[2]));
- AliDebug(2,Form("gcl %f %f %f",clxyz[0],clxyz[1],clxyz[2]));
- AliDebug(2,Form(" xtr %f xcl %f",track->GetX(),cl->GetX()));
-
- if (!track->Propagate(xTrOrig+cl->GetX())) return 0;
-
- AliCluster c(*cl);
- c.SetSigmaY2(track->GetSigmaY(layer)*track->GetSigmaY(layer));
- c.SetSigmaZ2(track->GetSigmaZ(layer)*track->GetSigmaZ(layer));
- c.SetSigmaYZ(track->GetSigmaYZ(layer));
-
-
- Int_t updated = track->UpdateMI(&c,chi2,index);
- // Bring the track back to detector plane in ideal geometry
- if (!track->Propagate(xTrOrig)) return 0;
-
- if(!updated) AliDebug(2,"update failed");
- return updated;
-}
-
-//------------------------------------------------------------------------
-void AliITStrackerMI::GetDCASigma(const AliITStrackMI* track, Float_t & sigmarfi, Float_t &sigmaz)
-{
- //
- //DCA sigmas parameterization
- //to be paramterized using external parameters in future
- //
- //
- Double_t curv=track->GetC();
- sigmarfi = 0.0040+1.4 *TMath::Abs(curv)+332.*curv*curv;
- sigmaz = 0.0110+4.37*TMath::Abs(curv);
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::SignDeltas(const TObjArray *clusterArray, Float_t vz)
-{
- //
- // Clusters from delta electrons?
- //
- Int_t entries = clusterArray->GetEntriesFast();
- if (entries<4) return;
- AliITSRecPoint* cluster = (AliITSRecPoint*)clusterArray->At(0);
- Int_t layer = cluster->GetLayer();
- if (layer>1) return;
- Int_t index[10000];
- Int_t ncandidates=0;
- Float_t r = (layer>0)? 7:4;
- //
- for (Int_t i=0;i<entries;i++){
- AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(i);
- Float_t nz = 1+TMath::Abs((cl0->GetZ()-vz)/r);
- if (cl0->GetNy()+cl0->GetNz()<=5+2*layer+nz) continue;
- index[ncandidates] = i; //candidate to belong to delta electron track
- ncandidates++;
- if (cl0->GetNy()+cl0->GetNz()>9+2*layer+nz) {
- cl0->SetDeltaProbability(1);
- }
- }
- //
- //
- //
- for (Int_t i=0;i<ncandidates;i++){
- AliITSRecPoint* cl0 = (AliITSRecPoint*)clusterArray->At(index[i]);
- if (cl0->GetDeltaProbability()>0.8) continue;
- //
- Int_t ncl = 0;
- Float_t y[100],z[100],sumy,sumz,sumy2, sumyz, sumw;
- sumy=sumz=sumy2=sumyz=sumw=0.0;
- for (Int_t j=0;j<ncandidates;j++){
- if (i==j) continue;
- AliITSRecPoint* cl1 = (AliITSRecPoint*)clusterArray->At(index[j]);
- //
- Float_t dz = cl0->GetZ()-cl1->GetZ();
- Float_t dy = cl0->GetY()-cl1->GetY();
- if (TMath::Sqrt(dz*dz+dy*dy)<0.2){
- Float_t weight = cl1->GetNy()+cl1->GetNz()-2;
- y[ncl] = cl1->GetY();
- z[ncl] = cl1->GetZ();
- sumy+= y[ncl]*weight;
- sumz+= z[ncl]*weight;
- sumy2+=y[ncl]*y[ncl]*weight;
- sumyz+=y[ncl]*z[ncl]*weight;
- sumw+=weight;
- ncl++;
- }
- }
- if (ncl<4) continue;
- Float_t det = sumw*sumy2 - sumy*sumy;
- Float_t delta=1000;
- if (TMath::Abs(det)>0.01){
- Float_t z0 = (sumy2*sumz - sumy*sumyz)/det;
- Float_t k = (sumyz*sumw - sumy*sumz)/det;
- delta = TMath::Abs(cl0->GetZ()-(z0+k*cl0->GetY()));
- }
- else{
- Float_t z0 = sumyz/sumy;
- delta = TMath::Abs(cl0->GetZ()-z0);
- }
- if ( delta<0.05) {
- cl0->SetDeltaProbability(1-20.*delta);
- }
- }
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::UpdateESDtrack(AliITStrackMI* track, ULong_t flags) const
-{
- //
- // Update ESD track
- //
- track->UpdateESDtrack(flags);
- AliITStrackMI * oldtrack = (AliITStrackMI*)(track->GetESDtrack()->GetITStrack());
- if (oldtrack) delete oldtrack;
- track->GetESDtrack()->SetITStrack(new AliITStrackMI(*track));
- // if (TMath::Abs(track->GetDnorm(1))<0.000000001){
- // printf("Problem\n");
- // }
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
- //
- // Get nearest upper layer close to the point xr.
- // rough approximation
- //
- const Float_t kRadiuses[6]={4,6.5,15.03,24.,38.5,43.7};
- Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
- Int_t res =6;
- for (Int_t i=0;i<6;i++){
- if (radius<kRadiuses[i]){
- res =i;
- break;
- }
- }
- return res;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::BuildMaterialLUT(TString material) {
- //--------------------------------------------------------------------
- // Fill a look-up table with mean material
- //--------------------------------------------------------------------
-
- Int_t n=1000;
- Double_t mparam[7];
- Double_t point1[3],point2[3];
- Double_t phi,cosphi,sinphi,z;
- // 0-5 layers, 6 pipe, 7-8 shields
- Double_t rmin[9]={ 3.5, 5.5,13.0,22.0,35.0,41.0, 2.0, 8.0,25.0};
- Double_t rmax[9]={ 5.5, 8.0,17.0,26.0,41.0,47.0, 3.0,10.5,30.0};
-
- Int_t ifirst=0,ilast=0;
- if(material.Contains("Pipe")) {
- ifirst=6; ilast=6;
- } else if(material.Contains("Shields")) {
- ifirst=7; ilast=8;
- } else if(material.Contains("Layers")) {
- ifirst=0; ilast=5;
- } else {
- Error("BuildMaterialLUT","Wrong layer name\n");
- }
- const double kAngEps = 1e-4; // tiny slope to avoid tracks strictly normal to Z axis
- for(Int_t imat=ifirst; imat<=ilast; imat++) {
- Double_t param[5]={0.,0.,0.,0.,0.};
- for (Int_t i=0; i<n; i++) {
- phi = 2.*TMath::Pi()*gRandom->Rndm();
- cosphi = TMath::Cos(phi); sinphi = TMath::Sin(phi);
- z = 14.*(-1.+2.*gRandom->Rndm()); // SPD barrel
- point1[0] = rmin[imat]*cosphi;
- point1[1] = rmin[imat]*sinphi;
- point1[2] = z;
- point2[0] = rmax[imat]*cosphi;
- point2[1] = rmax[imat]*sinphi;
- point2[2] = z+(rmax[imat]-rmin[imat])*kAngEps;
- AliTracker::MeanMaterialBudget(point1,point2,mparam);
- if (mparam[1]>999) {n--; continue;} // skip anomalous values in failed propagation
- for(Int_t j=0;j<5;j++) param[j]+=mparam[j];
- }
- for(Int_t j=0;j<5;j++) param[j]/=(Float_t)n;
- if(imat<=5) {
- fxOverX0Layer[imat] = param[1];
- fxTimesRhoLayer[imat] = param[0]*param[4];
- } else if(imat==6) {
- fxOverX0Pipe = param[1];
- fxTimesRhoPipe = param[0]*param[4];
- } else if(imat==7) {
- fxOverX0Shield[0] = param[1];
- fxTimesRhoShield[0] = param[0]*param[4];
- } else if(imat==8) {
- fxOverX0Shield[1] = param[1];
- fxTimesRhoShield[1] = param[0]*param[4];
- }
- }
- /*
- printf("%s\n",material.Data());
- printf("%f %f\n",fxOverX0Pipe,fxTimesRhoPipe);
- printf("%f %f\n",fxOverX0Shield[0],fxTimesRhoShield[0]);
- printf("%f %f\n",fxOverX0Shield[1],fxTimesRhoShield[1]);
- printf("%f %f\n",fxOverX0Layer[0],fxTimesRhoLayer[0]);
- printf("%f %f\n",fxOverX0Layer[1],fxTimesRhoLayer[1]);
- printf("%f %f\n",fxOverX0Layer[2],fxTimesRhoLayer[2]);
- printf("%f %f\n",fxOverX0Layer[3],fxTimesRhoLayer[3]);
- printf("%f %f\n",fxOverX0Layer[4],fxTimesRhoLayer[4]);
- printf("%f %f\n",fxOverX0Layer[5],fxTimesRhoLayer[5]);
- */
- return;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CorrectForPipeMaterial(AliITStrackMI *t,
- TString direction) {
- //-------------------------------------------------------------------
- // Propagate beyond beam pipe and correct for material
- // (material budget in different ways according to fUseTGeo value)
- // Add time if going outward (PropagateTo or PropagateToTGeo)
- //-------------------------------------------------------------------
-
- // Define budget mode:
- // 0: material from AliITSRecoParam (hard coded)
- // 1: material from TGeo in one step (on the fly)
- // 2: material from lut
- // 3: material from TGeo in one step (same for all hypotheses)
- Int_t mode;
- switch(fUseTGeo) {
- case 0:
- mode=0;
- break;
- case 1:
- mode=1;
- break;
- case 2:
- mode=2;
- break;
- case 3:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=1; }
- break;
- case 4:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=2; }
- break;
- default:
- mode=0;
- break;
- }
- if(fTrackingPhase.Contains("Default")) mode=0;
-
- Int_t index=fCurrentEsdTrack;
-
- Float_t dir = (direction.Contains("inward") ? 1. : -1.);
- Double_t rToGo=(dir>0 ? AliITSRecoParam::GetrInsidePipe() : AliITSRecoParam::GetrOutsidePipe());
- Double_t xToGo;
- if (!t->GetLocalXat(rToGo,xToGo)) return 0;
-
- Double_t xOverX0,x0,lengthTimesMeanDensity;
-
- switch(mode) {
- case 0:
- xOverX0 = AliITSRecoParam::GetdPipe();
- x0 = AliITSRecoParam::GetX0Be();
- lengthTimesMeanDensity = xOverX0*x0;
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 1:
- if (!t->PropagateToTGeo(xToGo,1)) return 0;
- break;
- case 2:
- if(fxOverX0Pipe<0) BuildMaterialLUT("Pipe");
- xOverX0 = fxOverX0Pipe;
- lengthTimesMeanDensity = fxTimesRhoPipe;
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 3:
- if(!fxOverX0PipeTrks || index<0 || index>=fNtracks) Error("CorrectForPipeMaterial","Incorrect usage of UseTGeo option!\n");
- if(fxOverX0PipeTrks[index]<0) {
- if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
- Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
- ((1.-t->GetSnp())*(1.+t->GetSnp())));
- fxOverX0PipeTrks[index] = TMath::Abs(xOverX0)/angle;
- fxTimesRhoPipeTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
- return 1;
- }
- xOverX0 = fxOverX0PipeTrks[index];
- lengthTimesMeanDensity = fxTimesRhoPipeTrks[index];
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- }
-
- return 1;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CorrectForShieldMaterial(AliITStrackMI *t,
- TString shield,
- TString direction) {
- //-------------------------------------------------------------------
- // Propagate beyond SPD or SDD shield and correct for material
- // (material budget in different ways according to fUseTGeo value)
- // Add time if going outward (PropagateTo or PropagateToTGeo)
- //-------------------------------------------------------------------
-
- // Define budget mode:
- // 0: material from AliITSRecoParam (hard coded)
- // 1: material from TGeo in steps of X cm (on the fly)
- // X = AliITSRecoParam::GetStepSizeTGeo()
- // 2: material from lut
- // 3: material from TGeo in one step (same for all hypotheses)
- Int_t mode;
- switch(fUseTGeo) {
- case 0:
- mode=0;
- break;
- case 1:
- mode=1;
- break;
- case 2:
- mode=2;
- break;
- case 3:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=1; }
- break;
- case 4:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=2; }
- break;
- default:
- mode=0;
- break;
- }
- if(fTrackingPhase.Contains("Default")) mode=0;
-
- Float_t dir = (direction.Contains("inward") ? 1. : -1.);
- Double_t rToGo;
- Int_t shieldindex=0;
- if (shield.Contains("SDD")) { // SDDouter
- rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(1) : AliITSRecoParam::GetrOutsideShield(1));
- shieldindex=1;
- } else if (shield.Contains("SPD")) { // SPDouter
- rToGo=(dir>0 ? AliITSRecoParam::GetrInsideShield(0) : AliITSRecoParam::GetrOutsideShield(0));
- shieldindex=0;
- } else {
- Error("CorrectForShieldMaterial"," Wrong shield name\n");
- return 0;
- }
-
- // do nothing if we are already beyond the shield
- Double_t rTrack = TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY());
- if(dir<0 && rTrack > rToGo) return 1; // going outward
- if(dir>0 && rTrack < rToGo) return 1; // going inward
-
-
- Double_t xToGo;
- if (!t->GetLocalXat(rToGo,xToGo)) return 0;
-
- Int_t index=2*fCurrentEsdTrack+shieldindex;
-
- Double_t xOverX0,x0,lengthTimesMeanDensity;
- Int_t nsteps=1;
-
- switch(mode) {
- case 0:
- xOverX0 = AliITSRecoParam::Getdshield(shieldindex);
- x0 = AliITSRecoParam::GetX0shield(shieldindex);
- lengthTimesMeanDensity = xOverX0*x0;
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 1:
- nsteps= (Int_t)(TMath::Abs(t->GetX()-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
- if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
- break;
- case 2:
- if(fxOverX0Shield[shieldindex]<0) BuildMaterialLUT("Shields");
- xOverX0 = fxOverX0Shield[shieldindex];
- lengthTimesMeanDensity = fxTimesRhoShield[shieldindex];
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 3:
- if(!fxOverX0ShieldTrks || index<0 || index>=2*fNtracks) Error("CorrectForShieldMaterial","Incorrect usage of UseTGeo option!\n");
- if(fxOverX0ShieldTrks[index]<0) {
- if (!t->PropagateToTGeo(xToGo,1,xOverX0,lengthTimesMeanDensity)) return 0;
- Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
- ((1.-t->GetSnp())*(1.+t->GetSnp())));
- fxOverX0ShieldTrks[index] = TMath::Abs(xOverX0)/angle;
- fxTimesRhoShieldTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
- return 1;
- }
- xOverX0 = fxOverX0ShieldTrks[index];
- lengthTimesMeanDensity = fxTimesRhoShieldTrks[index];
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- }
-
- return 1;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CorrectForLayerMaterial(AliITStrackMI *t,
- Int_t layerindex,
- Double_t oldGlobXYZ[3],
- TString direction) {
- //-------------------------------------------------------------------
- // Propagate beyond layer and correct for material
- // (material budget in different ways according to fUseTGeo value)
- // Add time if going outward (PropagateTo or PropagateToTGeo)
- //-------------------------------------------------------------------
-
- // Define budget mode:
- // 0: material from AliITSRecoParam (hard coded)
- // 1: material from TGeo in stepsof X cm (on the fly)
- // X = AliITSRecoParam::GetStepSizeTGeo()
- // 2: material from lut
- // 3: material from TGeo in one step (same for all hypotheses)
- Int_t mode;
- switch(fUseTGeo) {
- case 0:
- mode=0;
- break;
- case 1:
- mode=1;
- break;
- case 2:
- mode=2;
- break;
- case 3:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=1; }
- break;
- case 4:
- if(fTrackingPhase.Contains("Clusters2Tracks"))
- { mode=3; } else { mode=2; }
- break;
- default:
- mode=0;
- break;
- }
- if(fTrackingPhase.Contains("Default")) mode=0;
-
- Float_t dir = (direction.Contains("inward") ? 1. : -1.);
-
- Double_t r=fgLayers[layerindex].GetR();
- Double_t deltar=(layerindex<2 ? 0.10*r : 0.05*r);
-
- Double_t rToGo=TMath::Sqrt(t->GetX()*t->GetX()+t->GetY()*t->GetY())-deltar*dir;
- Double_t xToGo;
- if (!t->GetLocalXat(rToGo,xToGo)) return 0;
-
- Int_t index=6*fCurrentEsdTrack+layerindex;
-
-
- Double_t xOverX0=0.0,x0=0.0,lengthTimesMeanDensity=0.0;
- Int_t nsteps=1;
-
- // back before material (no correction)
- Double_t rOld,xOld;
- rOld=TMath::Sqrt(oldGlobXYZ[0]*oldGlobXYZ[0]+oldGlobXYZ[1]*oldGlobXYZ[1]);
- if (!t->GetLocalXat(rOld,xOld)) return 0;
- if (!t->Propagate(xOld)) return 0;
-
- switch(mode) {
- case 0:
- xOverX0 = fgLayers[layerindex].GetThickness(t->GetY(),t->GetZ(),x0);
- lengthTimesMeanDensity = xOverX0*x0;
- lengthTimesMeanDensity *= dir;
- // Bring the track beyond the material
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 1:
- nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
- if (!t->PropagateToTGeo(xToGo,nsteps)) return 0; // cross the material and apply correction
- break;
- case 2:
- if(fxOverX0Layer[layerindex]<0) BuildMaterialLUT("Layers");
- xOverX0 = fxOverX0Layer[layerindex];
- lengthTimesMeanDensity = fxTimesRhoLayer[layerindex];
- lengthTimesMeanDensity *= dir;
- // Bring the track beyond the material
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- case 3:
- if(!fxOverX0LayerTrks || index<0 || index>=6*fNtracks) Error("CorrectForLayerMaterial","Incorrect usage of UseTGeo option!\n");
- if(fxOverX0LayerTrks[index]<0) {
- nsteps = (Int_t)(TMath::Abs(xOld-xToGo)/AliITSReconstructor::GetRecoParam()->GetStepSizeTGeo())+1;
- if (!t->PropagateToTGeo(xToGo,nsteps,xOverX0,lengthTimesMeanDensity)) return 0;
- Double_t angle=TMath::Sqrt((1.+t->GetTgl()*t->GetTgl())/
- ((1.-t->GetSnp())*(1.+t->GetSnp())));
- fxOverX0LayerTrks[index] = TMath::Abs(xOverX0)/angle;
- fxTimesRhoLayerTrks[index] = TMath::Abs(lengthTimesMeanDensity)/angle;
- return 1;
- }
- xOverX0 = fxOverX0LayerTrks[index];
- lengthTimesMeanDensity = fxTimesRhoLayerTrks[index];
- lengthTimesMeanDensity *= dir;
- if (!t->PropagateTo(xToGo,xOverX0,lengthTimesMeanDensity/xOverX0)) return 0;
- break;
- }
-
-
- return 1;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::MakeTrksMaterialLUT(Int_t ntracks) {
- //-----------------------------------------------------------------
- // Initialize LUT for storing material for each prolonged track
- //-----------------------------------------------------------------
- fxOverX0PipeTrks = new Float_t[ntracks];
- fxTimesRhoPipeTrks = new Float_t[ntracks];
- fxOverX0ShieldTrks = new Float_t[ntracks*2];
- fxTimesRhoShieldTrks = new Float_t[ntracks*2];
- fxOverX0LayerTrks = new Float_t[ntracks*6];
- fxTimesRhoLayerTrks = new Float_t[ntracks*6];
-
- for(Int_t i=0; i<ntracks; i++) {
- fxOverX0PipeTrks[i] = -1.;
- fxTimesRhoPipeTrks[i] = -1.;
- }
- for(Int_t j=0; j<ntracks*2; j++) {
- fxOverX0ShieldTrks[j] = -1.;
- fxTimesRhoShieldTrks[j] = -1.;
- }
- for(Int_t k=0; k<ntracks*6; k++) {
- fxOverX0LayerTrks[k] = -1.;
- fxTimesRhoLayerTrks[k] = -1.;
- }
-
- fNtracks = ntracks;
-
- return;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::DeleteTrksMaterialLUT() {
- //-----------------------------------------------------------------
- // Delete LUT for storing material for each prolonged track
- //-----------------------------------------------------------------
- if(fxOverX0PipeTrks) {
- delete [] fxOverX0PipeTrks; fxOverX0PipeTrks = 0;
- }
- if(fxOverX0ShieldTrks) {
- delete [] fxOverX0ShieldTrks; fxOverX0ShieldTrks = 0;
- }
-
- if(fxOverX0LayerTrks) {
- delete [] fxOverX0LayerTrks; fxOverX0LayerTrks = 0;
- }
- if(fxTimesRhoPipeTrks) {
- delete [] fxTimesRhoPipeTrks; fxTimesRhoPipeTrks = 0;
- }
- if(fxTimesRhoShieldTrks) {
- delete [] fxTimesRhoShieldTrks; fxTimesRhoShieldTrks = 0;
- }
- if(fxTimesRhoLayerTrks) {
- delete [] fxTimesRhoLayerTrks; fxTimesRhoLayerTrks = 0;
- }
- return;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::SetForceSkippingOfLayer() {
- //-----------------------------------------------------------------
- // Check if we are forced to skip layers
- // either we set to skip them in RecoParam
- // or they were off during data-taking
- //-----------------------------------------------------------------
-
- const AliEventInfo *eventInfo = GetEventInfo();
-
- for(Int_t l=0; l<AliITSgeomTGeo::kNLayers; l++) {
- fForceSkippingOfLayer[l] = 0;
- // check reco param
- if(AliITSReconstructor::GetRecoParam()->GetLayersToSkip(l)) fForceSkippingOfLayer[l] = 1;
- // check run info
-
- if(eventInfo &&
- AliITSReconstructor::GetRecoParam()->GetSkipSubdetsNotInTriggerCluster()) {
- AliDebug(2,Form("GetEventInfo->GetTriggerCluster: %s",eventInfo->GetTriggerCluster()));
- if(l==0 || l==1) {
- if(!strstr(eventInfo->GetTriggerCluster(),"ITSSPD")) fForceSkippingOfLayer[l] = 1;
- } else if(l==2 || l==3) {
- if(!strstr(eventInfo->GetTriggerCluster(),"ITSSDD")) fForceSkippingOfLayer[l] = 1;
- } else {
- if(!strstr(eventInfo->GetTriggerCluster(),"ITSSSD")) fForceSkippingOfLayer[l] = 1;
- }
- }
- }
- return;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CheckSkipLayer(const AliITStrackMI *track,
- Int_t ilayer,Int_t idet) const {
- //-----------------------------------------------------------------
- // This method is used to decide whether to allow a prolongation
- // without clusters, because we want to skip the layer.
- // In this case the return value is > 0:
- // return 1: the user requested to skip a layer
- // return 2: track outside z acceptance
- //-----------------------------------------------------------------
-
- if (ForceSkippingOfLayer(ilayer)) return 1;
-
- Int_t innerLayCanSkip=0; // was 2, changed on 05.11.2009
-
- if (idet<0 && // out in z
- ilayer>innerLayCanSkip &&
- AliITSReconstructor::GetRecoParam()->GetExtendedEtaAcceptance()) {
- // check if track will cross SPD outer layer
- Double_t phiAtSPD2,zAtSPD2;
- if (track->GetPhiZat(fgLayers[1].GetR(),phiAtSPD2,zAtSPD2)) {
- if (TMath::Abs(zAtSPD2)<2.*AliITSRecoParam::GetSPDdetzlength()) return 2;
- }
- return 2; // always allow skipping, changed on 05.11.2009
- }
-
- return 0;
-}
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::CheckDeadZone(AliITStrackMI *track,
- Int_t ilayer,Int_t idet,
- Double_t dz,Double_t dy,
- Bool_t noClusters) const {
- //-----------------------------------------------------------------
- // This method is used to decide whether to allow a prolongation
- // without clusters, because there is a dead zone in the road.
- // In this case the return value is > 0:
- // return 1: dead zone at z=0,+-7cm in SPD
- // This method assumes that fSPDdetzcentre is ordered from -z to +z
- // return 2: all road is "bad" (dead or noisy) from the OCDB
- // return 3: at least a chip is "bad" (dead or noisy) from the OCDB
- // return 4: at least a single channel is "bad" (dead or noisy) from the OCDB
- //-----------------------------------------------------------------
-
- // check dead zones at z=0,+-7cm in the SPD
- if (ilayer<2 && !AliITSReconstructor::GetRecoParam()->GetAddVirtualClustersInDeadZone()) {
- Double_t zmindead[3]={fSPDdetzcentre[0] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
- fSPDdetzcentre[1] + 0.5*AliITSRecoParam::GetSPDdetzlength(),
- fSPDdetzcentre[2] + 0.5*AliITSRecoParam::GetSPDdetzlength()};
- Double_t zmaxdead[3]={fSPDdetzcentre[1] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
- fSPDdetzcentre[2] - 0.5*AliITSRecoParam::GetSPDdetzlength(),
- fSPDdetzcentre[3] - 0.5*AliITSRecoParam::GetSPDdetzlength()};
- for (Int_t i=0; i<3; i++)
- if (track->GetZ()-dz<zmaxdead[i] && track->GetZ()+dz>zmindead[i]) {
- AliDebug(2,Form("crack SPD %d track z %f %f %f %f\n",ilayer,track->GetZ(),dz,zmaxdead[i],zmindead[i]));
- if (GetSPDDeadZoneProbability(track->GetZ(),TMath::Sqrt(track->GetSigmaZ2()))>0.1) return 1;
- }
- }
-
- // check bad zones from OCDB
- if (!AliITSReconstructor::GetRecoParam()->GetUseBadZonesFromOCDB()) return 0;
-
- if (idet<0) return 0;
-
- AliITSdetector &det=fgLayers[ilayer].GetDetector(idet);
-
- Int_t detType=-1;
- Float_t detSizeFactorX=0.0001,detSizeFactorZ=0.0001;
- if (ilayer==0 || ilayer==1) { // ---------- SPD
- detType = 0;
- } else if (ilayer==2 || ilayer==3) { // ---------- SDD
- detType = 1;
- detSizeFactorX *= 2.;
- } else if (ilayer==4 || ilayer==5) { // ---------- SSD
- detType = 2;
- }
- AliITSsegmentation *segm = (AliITSsegmentation*)fkDetTypeRec->GetSegmentationModel(detType);
- if (detType==2) segm->SetLayer(ilayer+1);
- Float_t detSizeX = detSizeFactorX*segm->Dx();
- Float_t detSizeZ = detSizeFactorZ*segm->Dz();
-
- // check if the road overlaps with bad chips
- Float_t xloc,zloc;
- if(!(LocalModuleCoord(ilayer,idet,track,xloc,zloc)))return 0;
- Float_t zlocmin = zloc-dz;
- Float_t zlocmax = zloc+dz;
- Float_t xlocmin = xloc-dy;
- Float_t xlocmax = xloc+dy;
- Int_t chipsInRoad[100];
-
- // check if road goes out of detector
- Bool_t touchNeighbourDet=kFALSE;
- if (TMath::Abs(xlocmin)>0.5*detSizeX) {xlocmin=-0.4999*detSizeX; touchNeighbourDet=kTRUE;}
- if (TMath::Abs(xlocmax)>0.5*detSizeX) {xlocmax=+0.4999*detSizeX; touchNeighbourDet=kTRUE;}
- if (TMath::Abs(zlocmin)>0.5*detSizeZ) {zlocmin=-0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
- if (TMath::Abs(zlocmax)>0.5*detSizeZ) {zlocmax=+0.4999*detSizeZ; touchNeighbourDet=kTRUE;}
- AliDebug(2,Form("layer %d det %d zmim zmax %f %f xmin xmax %f %f %f %f",ilayer,idet,zlocmin,zlocmax,xlocmin,xlocmax,detSizeZ,detSizeX));
-
- // check if this detector is bad
- if (det.IsBad()) {
- AliDebug(2,Form("lay %d bad detector %d",ilayer,idet));
- if(!touchNeighbourDet) {
- return 2; // all detectors in road are bad
- } else {
- return 3; // at least one is bad
- }
- }
-
- if(zlocmin>zlocmax)return 0;
- Int_t nChipsInRoad = segm->GetChipsInLocalWindow(chipsInRoad,zlocmin,zlocmax,xlocmin,xlocmax);
- AliDebug(2,Form("lay %d nChipsInRoad %d",ilayer,nChipsInRoad));
- if (!nChipsInRoad) return 0;
-
- Bool_t anyBad=kFALSE,anyGood=kFALSE;
- for (Int_t iCh=0; iCh<nChipsInRoad; iCh++) {
- if (chipsInRoad[iCh]<0 || chipsInRoad[iCh]>det.GetNChips()-1) continue;
- AliDebug(2,Form(" chip %d bad %d",chipsInRoad[iCh],(Int_t)det.IsChipBad(chipsInRoad[iCh])));
- if (det.IsChipBad(chipsInRoad[iCh])) {
- anyBad=kTRUE;
- } else {
- anyGood=kTRUE;
- }
- }
-
- if (!anyGood) {
- if(!touchNeighbourDet) {
- AliDebug(2,"all bad in road");
- return 2; // all chips in road are bad
- } else {
- return 3; // at least a bad chip in road
- }
- }
-
- if (anyBad) {
- AliDebug(2,"at least a bad in road");
- return 3; // at least a bad chip in road
- }
-
-
- if (!AliITSReconstructor::GetRecoParam()->GetUseSingleBadChannelsFromOCDB()
- || !noClusters) return 0;
-
- // There are no clusters in road: check if there is at least
- // a bad SPD pixel or SDD anode or SSD strips on both sides
-
- Int_t idetInITS=idet;
- for(Int_t l=0;l<ilayer;l++) idetInITS+=AliITSgeomTGeo::GetNLadders(l+1)*AliITSgeomTGeo::GetNDetectors(l+1);
-
- if (fITSChannelStatus->AnyBadInRoad(idetInITS,zlocmin,zlocmax,xlocmin,xlocmax)) {
- AliDebug(2,Form("Bad channel in det %d of layer %d\n",idet,ilayer));
- return 4;
- }
- //if (fITSChannelStatus->FractionOfBadInRoad(idet,zlocmin,zlocmax,xlocmin,xlocmax) > AliITSReconstructor::GetRecoParam()->GetMinFractionOfBadInRoad()) return 3;
-
- return 0;
-}
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::LocalModuleCoord(Int_t ilayer,Int_t idet,
- const AliITStrackMI *track,
- Float_t &xloc,Float_t &zloc) const {
- //-----------------------------------------------------------------
- // Gives position of track in local module ref. frame
- //-----------------------------------------------------------------
-
- xloc=0.;
- zloc=0.;
-
- if(idet<0) return kTRUE; // track out of z acceptance of layer
-
- Int_t ndet=AliITSgeomTGeo::GetNDetectors(ilayer+1); // layers from 1 to 6
-
- Int_t lad = Int_t(idet/ndet) + 1;
-
- Int_t det = idet - (lad-1)*ndet + 1;
-
- Double_t xyzGlob[3],xyzLoc[3];
-
- AliITSdetector &detector = fgLayers[ilayer].GetDetector(idet);
- // take into account the misalignment: xyz at real detector plane
- if(!track->GetXYZAt(detector.GetRmisal(),GetBz(),xyzGlob)) return kFALSE;
-
- if(!AliITSgeomTGeo::GlobalToLocal(ilayer+1,lad,det,xyzGlob,xyzLoc)) return kFALSE;
-
- xloc = (Float_t)xyzLoc[0];
- zloc = (Float_t)xyzLoc[2];
-
- return kTRUE;
-}
-//------------------------------------------------------------------------
-//------------------------------------------------------------------------
-Bool_t AliITStrackerMI::IsOKForPlaneEff(const AliITStrackMI* track, const Int_t *clusters, Int_t ilayer){
-//
-// Method to be optimized further:
-// Aim: decide whether a track can be used for PlaneEff evaluation
-// the decision is taken based on the track quality at the layer under study
-// no information on the clusters on this layer has to be used
-// The criterium is to reject tracks at boundaries between basic block (e.g. SPD chip)
-// the cut is done on number of sigmas from the boundaries
-//
-// Input: Actual track, layer [0,5] under study
-// Output: none
-// Return: kTRUE if this is a good track
-//
-// it will apply a pre-selection to obtain good quality tracks.
-// Here also you will have the possibility to put a control on the
-// impact point of the track on the basic block, in order to exclude border regions
-// this will be done by calling a proper method of the AliITSPlaneEff class.
-//
-// input: AliITStrackMI* track, ilayer= layer number [0,5]
-// return: Bool_t -> kTRUE if usable track, kFALSE if not usable.
-//
- Int_t index[AliITSgeomTGeo::kNLayers];
- Int_t k;
- for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) index[k]=-1;
- //
- for (k=0; k<AliITSgeomTGeo::GetNLayers(); k++) {
- index[k]=clusters[k];
- }
-
- if(!fPlaneEff)
- {AliWarning("IsOKForPlaneEff: null pointer to AliITSPlaneEff"); return kFALSE;}
- AliITSlayer &layer=fgLayers[ilayer];
- Double_t r=layer.GetR();
- AliITStrackMI tmp(*track);
-
-// require a minimal number of cluster in other layers and eventually clusters in closest layers
- Int_t nclout=0; Int_t nclin=0;
- for(Int_t lay=AliITSgeomTGeo::kNLayers-1;lay>ilayer;lay--) { // count n. of cluster in outermost layers
- AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
- tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
- // if (tmp.GetClIndex(lay)>=0) nclout++;
-if(index[lay]>=0)nclout++;
- }
- for(Int_t lay=ilayer-1; lay>=0;lay--) { // count n. of cluster in innermost layers
- AliDebug(2,Form("trak=%d lay=%d ; index=%d ESD label= %d",tmp.GetLabel(),lay,
- tmp.GetClIndex(lay),((AliESDtrack*)tmp.GetESDtrack())->GetLabel())) ;
- if (index[lay]>=0) nclin++;
- }
- Int_t ncl=nclout+nclin;
- Bool_t nextout = kFALSE;
- if(ilayer==AliITSgeomTGeo::kNLayers-1) nextout=kTRUE; // you are already on the outermost layer
- else nextout = ((tmp.GetClIndex(ilayer+1)>=0)? kTRUE : kFALSE );
- Bool_t nextin = kFALSE;
- if(ilayer==0) nextin=kTRUE; // you are already on the innermost layer
- else nextin = ((index[ilayer-1]>=0)? kTRUE : kFALSE );
- // maximum number of missing clusters allowed in outermost layers
- if(nclout<AliITSgeomTGeo::kNLayers-(ilayer+1)-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersOutPlaneEff())
- return kFALSE;
- // maximum number of missing clusters allowed (both in innermost and in outermost layers)
- if(ncl<AliITSgeomTGeo::kNLayers-1-AliITSReconstructor::GetRecoParam()->GetMaxMissingClustersPlaneEff())
- return kFALSE;
- if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInOuterLayerPlaneEff() && !nextout) return kFALSE;
- if(AliITSReconstructor::GetRecoParam()->GetRequireClusterInInnerLayerPlaneEff() && !nextin) return kFALSE;
- if(tmp.Pt() < AliITSReconstructor::GetRecoParam()->GetMinPtPlaneEff()) return kFALSE;
- // if(AliITSReconstructor::GetRecoParam()->GetOnlyConstraintPlaneEff() && !tmp.GetConstrain()) return kFALSE;
-
-// detector number
- Double_t phi,z;
- if (!tmp.GetPhiZat(r,phi,z)) return kFALSE;
- Int_t idet=layer.FindDetectorIndex(phi,z);
- if(idet<0) { AliInfo(Form("cannot find detector"));
- return kFALSE;}
-
- // here check if it has good Chi Square.
-
- //propagate to the intersection with the detector plane
- const AliITSdetector &det=layer.GetDetector(idet);
- if (!tmp.Propagate(det.GetPhi(),det.GetR())) return kFALSE;
-
- Float_t locx; //
- Float_t locz; //
- if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return kFALSE;
- UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
- if(key>fPlaneEff->Nblock()) return kFALSE;
- Float_t blockXmn,blockXmx,blockZmn,blockZmx;
- if (!fPlaneEff->GetBlockBoundaries(key,blockXmn,blockXmx,blockZmn,blockZmx)) return kFALSE;
- //***************
- // DEFINITION OF SEARCH ROAD FOR accepting a track
- //
- Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXFromBoundaryPlaneEff();
- Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZFromBoundaryPlaneEff();
- Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXFromBoundaryPlaneEff();
- Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZFromBoundaryPlaneEff();
- Double_t dx=nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
- // those are precisions in the tracking reference system
- Double_t dz=nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
- // Use it also for the module reference system, as it is done for RecPoints
-
- if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigFrmBndPlaneEff()){
- if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) dx -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
- else dx -= distx;
-
- if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) dz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
- else dz -= distz;
- }
-
- // exclude tracks at boundary between detectors
- //Double_t boundaryWidth=AliITSRecoParam::GetBoundaryWidthPlaneEff();
- Double_t boundaryWidth=0; // for the time being hard-wired, later on from AliITSRecoParam
- AliDebug(2,Form("Tracking: track impact x=%f, y=%f, z=%f",tmp.GetX(), tmp.GetY(), tmp.GetZ()));
- AliDebug(2,Form("Local: track impact x=%f, z=%f",locx,locz));
- AliDebug(2,Form("Search Road. Tracking: dy=%f , dz=%f",dx,dz));
- if ( (locx-dx < blockXmn+boundaryWidth) ||
- (locx+dx > blockXmx-boundaryWidth) ||
- (locz-dz < blockZmn+boundaryWidth) ||
- (locz+dz > blockZmx-boundaryWidth) ) return kFALSE;
-
- if(ilayer==0){
- const AliESDEvent *myesd = ((AliESDtrack*)tmp.GetESDtrack())->GetESDEvent();
- //The beam pipe
- if (CorrectForPipeMaterial(&tmp,"inward")) {
- const AliESDVertex* vtx = myesd->GetVertex();
- if(!vtx) return kFALSE;
- Double_t ddz[2],cov[3];
- Double_t maxD=3.;
- if(!tmp.PropagateToDCA(vtx,AliTracker::GetBz(),maxD,ddz,cov)) return kFALSE;
- if(TMath::Abs(ddz[0])>=AliITSReconstructor::GetRecoParam()->GetDCACutPlaneEff()) return kFALSE;
-
- Double_t covar[6]; vtx->GetCovMatrix(covar);
- Double_t p[2]={tmp.GetParameter()[0]-ddz[0],tmp.GetParameter()[1]-ddz[1]};
- Double_t c[3]={covar[2],0.,covar[5]};
- Double_t chi2= ((AliESDtrack*)tmp.GetESDtrack())->GetPredictedChi2(p,c);
- if (chi2>AliITSReconstructor::GetRecoParam()->GetVertexChi2CutPlaneEff()) return kFALSE; // Use this to cut on chi^2
-
- } else return kFALSE;
- }
-
-
- return kTRUE;
-}
-//------------------------------------------------------------------------
-void AliITStrackerMI::UseTrackForPlaneEff(const AliITStrackMI* track, Int_t ilayer) {
-//
-// This Method has to be optimized! For the time-being it uses the same criteria
-// as those used in the search of extra clusters for overlapping modules.
-//
-// Method Purpose: estabilish whether a track has produced a recpoint or not
-// in the layer under study (For Plane efficiency)
-//
-// inputs: AliITStrackMI* track (pointer to a usable track)
-// outputs: none
-// side effects: update (by 1 count) the Plane Efficiency statistics of the basic block
-// traversed by this very track. In details:
-// - if a cluster can be associated to the track then call
-// AliITSPlaneEff::UpDatePlaneEff(key,kTRUE);
-// - if not, the AliITSPlaneEff::UpDatePlaneEff(key,kFALSE) is called
-//
- if(!fPlaneEff)
- {AliWarning("UseTrackForPlaneEff: null pointer to AliITSPlaneEff"); return;}
- AliITSlayer &layer=fgLayers[ilayer];
- Double_t r=layer.GetR();
- AliITStrackMI tmp(*track);
-
-// detector number
- Double_t phi,z;
- if (!tmp.GetPhiZat(r,phi,z)) return;
- Int_t idet=layer.FindDetectorIndex(phi,z);
-
- if(idet<0) { AliInfo(Form("cannot find detector"));
- return;}
-
-
-//propagate to the intersection with the detector plane
- const AliITSdetector &det=layer.GetDetector(idet);
- if (!tmp.Propagate(det.GetPhi(),det.GetR())) return;
-
-
-//***************
-// DEFINITION OF SEARCH ROAD FOR CLUSTERS SELECTION
-//
- Double_t dz=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadZ()*
- TMath::Sqrt(tmp.GetSigmaZ2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer));
- Double_t dy=AliITSReconstructor::GetRecoParam()->GetNSigmaRoadY()*
- TMath::Sqrt(tmp.GetSigmaY2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer));
-
-// road in global (rphi,z) [i.e. in tracking ref. system]
- Double_t zmin = tmp.GetZ() - dz;
- Double_t zmax = tmp.GetZ() + dz;
- Double_t ymin = tmp.GetY() + r*det.GetPhi() - dy;
- Double_t ymax = tmp.GetY() + r*det.GetPhi() + dy;
-
-// select clusters in road
- layer.SelectClusters(zmin,zmax,ymin,ymax);
-
-// Define criteria for track-cluster association
- Double_t msz = tmp.GetSigmaZ2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaZLayerForRoadZ()*
- AliITSReconstructor::GetRecoParam()->GetSigmaZ2(ilayer);
- Double_t msy = tmp.GetSigmaY2() +
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetNSigmaYLayerForRoadY()*
- AliITSReconstructor::GetRecoParam()->GetSigmaY2(ilayer);
- if (tmp.GetConstrain()) {
- msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZC();
- msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYC();
- } else {
- msz *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadZNonC();
- msy *= AliITSReconstructor::GetRecoParam()->GetNSigma2RoadYNonC();
- }
-
- if(AliITSReconstructor::GetRecoParam()->GetSwitchOffStdSearchClusPlaneEff()){
- Double_t nsigx=AliITSReconstructor::GetRecoParam()->GetNSigXSearchClusterPlaneEff();
- Double_t nsigz=AliITSReconstructor::GetRecoParam()->GetNSigZSearchClusterPlaneEff();
- Double_t distx=AliITSReconstructor::GetRecoParam()->GetDistXSearchClusterPlaneEff();
- Double_t distz=AliITSReconstructor::GetRecoParam()->GetDistZSearchClusterPlaneEff();
- msy = nsigx*TMath::Sqrt(tmp.GetSigmaY2()) + distx;
- msz = nsigz*TMath::Sqrt(tmp.GetSigmaZ2()) + distz;
-
- if(AliITSReconstructor::GetRecoParam()->GetSwitchOnMaxDistNSigSrhClusPlaneEff()){
- if(nsigx*TMath::Sqrt(tmp.GetSigmaY2())<=distx) msy -= nsigx*TMath::Sqrt(tmp.GetSigmaY2());
- else msy -= distx;
-
- if(nsigz*TMath::Sqrt(tmp.GetSigmaZ2())<=distz) msz -= nsigz*TMath::Sqrt(tmp.GetSigmaZ2());
- else msz -= distz;
- }
-
- msy *= msy;
- msz *= msz;
-
- }
-
- if(msz==0 || msy==0){AliWarning("UseTrackForPlaneEff: null search frame"); return;}
-
- msz = 1./msz; // 1/RoadZ^2
- msy = 1./msy; // 1/RoadY^2
-
- const AliITSRecPoint *cl=0; Int_t clidx=-1, ci=-1;
- Int_t idetc=-1;
- Double_t chi2trkcl=1000.*AliITSReconstructor::GetRecoParam()->GetMaxChi2();
- //Double_t tolerance=0.2;
- /*while ((cl=layer.GetNextCluster(clidx))!=0) {
- idetc = cl->GetDetectorIndex();
- if(idet!=idetc) continue;
- //Int_t ilay = cl->GetLayer();
-
- if (TMath::Abs(tmp.GetZ() - cl->GetZ()) > tolerance) continue;
- if (TMath::Abs(tmp.GetY() - cl->GetY()) > tolerance) continue;
-
- Double_t chi2=tmp.GetPredictedChi2(cl);
- if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; }
- }*/
- Float_t locx; //
- Float_t locz; //
- if(!LocalModuleCoord(ilayer,idet,&tmp,locx,locz)) return;
-//
- AliDebug(2,Form("ilayer= %d, idet=%d, x= %f, z=%f",ilayer,idet,locx,locz));
- UInt_t key=fPlaneEff->GetKeyFromDetLocCoord(ilayer,idet,locx,locz);
- if(key>fPlaneEff->Nblock()) return;
- Bool_t found=kFALSE;
- //if (ci>=0) {
- Double_t chi2;
- while ((cl=layer.GetNextCluster(clidx))!=0) {
- idetc = cl->GetDetectorIndex();
- if(idet!=idetc) continue;
- // here real control to see whether the cluster can be associated to the track.
- // cluster not associated to track
- if ( (tmp.GetZ()-cl->GetZ())*(tmp.GetZ()-cl->GetZ())*msz +
- (tmp.GetY()-cl->GetY())*(tmp.GetY()-cl->GetY())*msy > 1. ) continue;
- // calculate track-clusters chi2
- chi2 = GetPredictedChi2MI(&tmp,cl,ilayer); // note that this method change track tmp
- // in particular, the error associated to the cluster
- //Double_t chi2 = tmp.GetPredictedChi(cl); // this method does not change track tmp
- // chi2 cut
- if (chi2 > AliITSReconstructor::GetRecoParam()->GetMaxChi2s(ilayer)) continue;
- found=kTRUE;
- if (chi2<chi2trkcl) { chi2trkcl=chi2; ci=clidx; } // this just to trace which cluster is selected
- // track->SetExtraCluster(ilayer,(ilayer<<28)+ci);
- // track->SetExtraModule(ilayer,idetExtra);
- }
- if(!fPlaneEff->UpDatePlaneEff(found,key))
- AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for key=%d",key));
-
-// this for FO efficiency studies (only for SPD) //
- UInt_t keyFO=999999;
- Bool_t foundFO=kFALSE;
- if(ilayer<2){ //ONLY SPD layers for FastOr studies
- TBits mapFO = fkDetTypeRec->GetFastOrFiredMap();
- Int_t phase = (fEsd->GetBunchCrossNumber())%4;
- if(!fSPDChipIntPlaneEff[key]){
- AliITSPlaneEffSPD spd;
- keyFO = spd.SwitchChipKeyNumbering(key);
- if(mapFO.TestBitNumber(keyFO))foundFO=kTRUE;
- keyFO = key + (AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip)*(phase+1);
- if(keyFO<AliITSPlaneEffSPD::kNModule*AliITSPlaneEffSPD::kNChip) {
- AliWarning(Form("UseTrackForPlaneEff: too small keyF0 (= %d), setting it to 999999",keyFO));
- keyFO=999999;
- }
- if(!fPlaneEff->UpDatePlaneEff(foundFO,keyFO))
- AliWarning(Form("UseTrackForPlaneEff: cannot UpDate PlaneEff for FastOR for key=%d",keyFO));
- }
- }
-
-
-
- if(fPlaneEff->GetCreateHistos()&& AliITSReconstructor::GetRecoParam()->GetHistoPlaneEff()) {
- Float_t tr[4]={99999.,99999.,9999.,9999.}; // initialize to high values
- Float_t clu[4]={-99999.,-99999.,9999.,9999.}; // (in some cases GetCov fails)
- Int_t cltype[2]={-999,-999};
- // and the module
-
- Float_t angleModTrack[3]={99999.,99999.,99999.}; // angles (phi, z and "absolute angle") between the track and the mormal to the module (see below)
-
- tr[0]=locx;
- tr[1]=locz;
- tr[2]=TMath::Sqrt(tmp.GetSigmaY2()); // those are precisions in the tracking reference system
- tr[3]=TMath::Sqrt(tmp.GetSigmaZ2()); // Use it also for the module reference system, as it is
-
- if (found){
- clu[0]=layer.GetCluster(ci)->GetDetLocalX();
- clu[1]=layer.GetCluster(ci)->GetDetLocalZ();
- cltype[0]=layer.GetCluster(ci)->GetNy();
- cltype[1]=layer.GetCluster(ci)->GetNz();
-
- // Without the following 6 lines you would retrieve the nominal error of a cluster (e.g. for the SPD:
- // X->50/sqrt(12)=14 micron Z->450/sqrt(12)= 120 micron)
- // Within AliTrackerMI/AliTrackMI the error on the cluster is associated to the AliITStrackMI (fSigmaY,Z)
- // It is computed properly by calling the method
- // AliITStrackerMI::GetPredictedChi2MI(AliITStrackMI* track, const AliITSRecPoint *cluster,Int_t layer)
- // T
- //Double_t x=0.5*(tmp.GetX()+layer.GetCluster(ci)->GetX()); // Take into account the mis-alignment
- //if (tmp.PropagateTo(x,0.,0.)) {
- chi2=GetPredictedChi2MI(&tmp,layer.GetCluster(ci),ilayer);
- AliCluster c(*layer.GetCluster(ci));
- c.SetSigmaY2(tmp.GetSigmaY(ilayer)*tmp.GetSigmaY(ilayer));
- c.SetSigmaZ2(tmp.GetSigmaZ(ilayer)*tmp.GetSigmaZ(ilayer));
- //if (layer.GetCluster(ci)->GetGlobalCov(cov)) // by using this, instead, you got nominal cluster errors
- clu[2]=TMath::Sqrt(c.GetSigmaY2());
- clu[3]=TMath::Sqrt(c.GetSigmaZ2());
- //}
- }
- // Compute the angles between the track and the module
- // compute the angle "in phi direction", i.e. the angle in the transverse plane
- // between the normal to the module and the projection (in the transverse plane) of the
- // track trajectory
- // tgphi and tglambda of the track in tracking frame with alpha=det.GetPhi
- Float_t tgl = tmp.GetTgl();
- Float_t phitr = tmp.GetSnp();
- phitr = TMath::ASin(phitr);
- Int_t volId = AliGeomManager::LayerToVolUIDSafe(ilayer+1 ,idet );
-
- Double_t tra[3]; AliGeomManager::GetOrigTranslation(volId,tra);
- Double_t rot[9]; AliGeomManager::GetOrigRotation(volId,rot);
- Double_t alpha =0.;
- alpha = tmp.GetAlpha();
- Double_t phiglob = alpha+phitr;
- Double_t p[3];
- p[0] = TMath::Cos(phiglob);
- p[1] = TMath::Sin(phiglob);
- p[2] = tgl;
- TVector3 pvec(p[0],p[1],p[2]);
- TVector3 normvec(rot[1],rot[4],rot[7]);
- Double_t angle = pvec.Angle(normvec);
-
- if(angle>0.5*TMath::Pi()) angle = (TMath::Pi()-angle);
- angle *= 180./TMath::Pi();
-
- //Trasverse Plane
- TVector3 pt(p[0],p[1],0);
- TVector3 normt(rot[1],rot[4],0);
- Double_t anglet = pt.Angle(normt);
-
- Double_t phiPt = TMath::ATan2(p[1],p[0]);
- if(phiPt<0)phiPt+=2.*TMath::Pi();
- Double_t phiNorm = TMath::ATan2(rot[4],rot[1]);
- if(phiNorm<0) phiNorm+=2.*TMath::Pi();
- if(anglet>0.5*TMath::Pi()) anglet = (TMath::Pi()-anglet);
- if(phiNorm>phiPt) anglet*=-1.;// pt-->normt clockwise: anglet>0
- if((phiNorm-phiPt)>TMath::Pi()) anglet*=-1.;
- anglet *= 180./TMath::Pi();
-
- angleModTrack[2]=(Float_t) angle;
- angleModTrack[0]=(Float_t) anglet;
- // now the "angle in z" (much easier, i.e. the angle between the z axis and the track momentum + 90)
- angleModTrack[1]=TMath::ACos(tgl/TMath::Sqrt(tgl*tgl+1.));
- angleModTrack[1]-=TMath::Pi()/2.; // range of angle is -pi/2 , pi/2
- angleModTrack[1]*=180./TMath::Pi(); // in degree
-
- fPlaneEff->FillHistos(key,found,tr,clu,cltype,angleModTrack);
-
- // For FO efficiency studies of SPD
- if(ilayer<2 && !fSPDChipIntPlaneEff[key]) fPlaneEff->FillHistos(keyFO,foundFO,tr,clu,cltype,angleModTrack);
- }
- if(ilayer<2) fSPDChipIntPlaneEff[key]=kTRUE;
-return;
-}
-
-Int_t AliITStrackerMI::FindClusterOfTrack(int label, int lr, int* store) const //RS
-{
- // find the MC cluster for the label
- return fgLayers[lr].FindClusterForLabel(label,store);
-}
-
-/*
-Int_t AliITStrackerMI::GetPattern(const AliITStrackMI* track, char* patt)
-{
- // creates pattarn of hits marking fake/corrects by f/c. Used for debugging (RS)
- strncpy(patt,"......",6);
- int tpcLabel = 0;
- if (track->GetESDtrack()) tpcLabel = track->GetESDtrack()->GetTPCLabel();
- //
- int nwrong = 0;
- for (Int_t i=0;i<track->GetNumberOfClusters();i++){
- Int_t cindex = track->GetClusterIndex(i);
- Int_t l=(cindex & 0xf0000000) >> 28;
- AliITSRecPoint *cl = (AliITSRecPoint*)GetCluster(cindex);
- Int_t isWrong=1;
- for (Int_t ind=0;ind<3;ind++) if (cl->GetLabel(ind)==TMath::Abs(tpcLabel)) isWrong=0;
- patt[l] = isWrong ? 'f':'c';
- nwrong+=isWrong;
- }
- return nwrong;
-}
-*/
-//------------------------------------------------------------------------
-Int_t AliITStrackerMI::AliITSlayer::FindClusterForLabel(Int_t label, Int_t *store) const
-{ //RS
- //--------------------------------------------------------------------
-
- int nfound = 0;
- for (int ic=0;ic<fN;ic++) {
- const AliITSRecPoint *cl = GetCluster(ic);
- for (int i=0;i<3;i++) if (cl->GetLabel(i)==label) {
- if (nfound<50) {
- if (store) store[nfound] = ic;
- nfound++;
- }
- break;
- }
- }
- return nfound;
-}
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff