/// Try to match track from tracking system with trigger track
AliCodeTimerAuto("");
- const Double_t kDeltaZ = TMath::Abs(AliMUONConstants::DefaultChamberZ(12) - AliMUONConstants::DefaultChamberZ(10));
-
- //static const Double_t kDistSigma[3]={1,1,0.02}; // sigma of distributions (trigger-track) X,Y,slopeY
- // sigma of distributions (trigger-track) X,Y,slopeY
- const Double_t kDistSigma[3]={AliMUONConstants::TriggerNonBendingReso(),
- AliMUONConstants::TriggerBendingReso(),
- 1.414 * AliMUONConstants::TriggerBendingReso()/kDeltaZ};
-
- const Double_t kTrigNonBendReso = AliMUONConstants::TriggerNonBendingReso();
- const Double_t kTrigBendReso = AliMUONConstants::TriggerBendingReso();
- const Double_t kTrigSlopeBendReso = 1.414 * AliMUONConstants::TriggerBendingReso()/kDeltaZ;
- const Double_t kTrigCovSlopeBend = - kTrigBendReso * kTrigBendReso / kDeltaZ;
-
- // Covariance matrix 3x3 (X,Y,slopeY) for trigger tracks
- TMatrixD trigCov(3,3);
- trigCov.Zero();
- trigCov(0,0) = kTrigNonBendReso * kTrigNonBendReso;
- trigCov(1,1) = kTrigBendReso * kTrigBendReso;
- trigCov(2,2) = kTrigSlopeBendReso * kTrigSlopeBendReso;
- trigCov(1,2) = trigCov(2,1) = kTrigCovSlopeBend;
-
- Int_t matchTrigger;
- Int_t loTrgNum(-1);
- Double_t distTriggerTrack[3], sigma2[3];
- Double_t xTrack, yTrack, ySlopeTrack, chi2MatchTrigger, minChi2MatchTrigger, chi2;
-
- TIter itTrack(trackStore.CreateIterator());
- AliMUONTrack* track;
-
- const Float_t kZFilterOut = AliMUONConstants::MuonFilterZEnd();
- const Float_t kFilterThickness = TMath::Abs(kZFilterOut-AliMUONConstants::MuonFilterZBeg()); // cm
- const Int_t kFirstTrigCh = AliMUONConstants::NTrackingCh();
-
- while ( ( track = static_cast<AliMUONTrack*>(itTrack()) ) )
- {
- matchTrigger = 0;
- chi2MatchTrigger = 0.;
- loTrgNum = -1;
- Int_t doubleMatch=-1; // Check if track matches 2 trigger tracks
- Double_t doubleChi2 = -1.;
-
- AliMUONTrackParam trackParam(*((AliMUONTrackParam*) (track->GetTrackParamAtCluster()->Last())));
-
- AliMUONTrackExtrap::ExtrapToZCov(&trackParam, kZFilterOut); // Extrap to muon filter end
- AliMUONTrackExtrap::AddMCSEffect(&trackParam, kFilterThickness, AliMUONConstants::MuonFilterX0()); // Add MCS effects
- AliMUONTrackExtrap::ExtrapToZCov(&trackParam, AliMUONConstants::DefaultChamberZ(kFirstTrigCh)); // extrap to 1st trigger chamber
-
- const TMatrixD& kParamCov = trackParam.GetCovariances();
-
- xTrack = trackParam.GetNonBendingCoor();
- yTrack = trackParam.GetBendingCoor();
- ySlopeTrack = trackParam.GetBendingSlope();
-
- // Covariance matrix 3x3 (X,Y,slopeY) for tracker tracks
- TMatrixD trackCov(3,3);
- trackCov.Zero();
- trackCov(0,0) = kParamCov(0,0);
- trackCov(1,1) = kParamCov(2,2);
- trackCov(2,2) = kParamCov(3,3);
- trackCov(1,2) = kParamCov(2,3);
- trackCov(2,1) = kParamCov(3,2);
-
- TMatrixD sumCov(trackCov,TMatrixD::kPlus,trigCov);
-
- Bool_t isCovOK = kTRUE;
-
- if (sumCov.Determinant() != 0) {
- sumCov.Invert();
- } else {
- AliWarning(" Determinant = 0");
- isCovOK = kFALSE;
- sigma2[0] = kParamCov(0,0);
- sigma2[1] = kParamCov(2,2);
- sigma2[2] = kParamCov(3,3);
- for (Int_t iVar = 0; iVar < 3; iVar++) sigma2[iVar] += kDistSigma[iVar] * kDistSigma[iVar];
- }
-
- minChi2MatchTrigger = 999.;
-
- AliMUONTriggerTrack *triggerTrack;
- TIter itTriggerTrack(triggerTrackStore.CreateIterator());
- while ( ( triggerTrack = static_cast<AliMUONTriggerTrack*>(itTriggerTrack() ) ) )
- {
- distTriggerTrack[0] = triggerTrack->GetX11()-xTrack;
- distTriggerTrack[1] = triggerTrack->GetY11()-yTrack;
- distTriggerTrack[2] = TMath::Tan(triggerTrack->GetThetay())-ySlopeTrack;
-
- if(isCovOK){
- TMatrixD paramDiff(3,1);
- for(Int_t iVar = 0; iVar < 3; iVar++)
- paramDiff(iVar,0) = distTriggerTrack[iVar];
-
- TMatrixD tmp(sumCov,TMatrixD::kMult,paramDiff);
- TMatrixD chi2M(paramDiff,TMatrixD::kTransposeMult,tmp);
- chi2 = chi2M(0,0);
- }
- else {
- chi2 = 0.;
- for (Int_t iVar = 0; iVar < 3; iVar++) chi2 += distTriggerTrack[iVar]*distTriggerTrack[iVar]/sigma2[iVar];
- }
-
- chi2 /= 3.; // Normalized Chi2: 3 degrees of freedom (X,Y,slopeY)
- if (chi2 < AliMUONReconstructor::GetRecoParam()->GetMaxNormChi2MatchTrigger())
- {
- Bool_t isDoubleTrack = (TMath::Abs(chi2 - minChi2MatchTrigger)<1.);
- if (chi2 < minChi2MatchTrigger && chi2 < AliMUONReconstructor::GetRecoParam()->GetMaxNormChi2MatchTrigger())
- {
- if(isDoubleTrack)
- {
- doubleMatch = loTrgNum;
- doubleChi2 = chi2MatchTrigger;
- }
- minChi2MatchTrigger = chi2;
- chi2MatchTrigger = chi2;
- loTrgNum = triggerTrack->GetLoTrgNum();
- AliMUONLocalTrigger* locTrg = triggerStore.FindLocal(loTrgNum);
- matchTrigger=1;
- if(locTrg->LoLpt()>0)matchTrigger=2;
- if(locTrg->LoHpt()>0)matchTrigger=3;
- }
- else if(isDoubleTrack)
- {
- doubleMatch = triggerTrack->GetLoTrgNum();
- doubleChi2 = chi2;
- }
- }
- }
- if(doubleMatch>=0)
- { // If two trigger tracks match, select the one passing more trigger cuts
- AliDebug(1, Form("Two candidates found: %i and %i",loTrgNum,doubleMatch));
- AliMUONLocalTrigger* locTrg1 = triggerStore.FindLocal(doubleMatch);
- if((locTrg1->LoLpt()>0 && matchTrigger<2) || (locTrg1->LoHpt() && matchTrigger<3))
- {
- if(locTrg1->LoHpt()>0)matchTrigger=3;
- else matchTrigger=2;
- loTrgNum = doubleMatch;
- chi2MatchTrigger=doubleChi2;
- }
- }
-
- track->SetMatchTrigger(matchTrigger);
- track->SetLoTrgNum(loTrgNum);
- track->SetChi2MatchTrigger(chi2MatchTrigger);
-
- AliMUONLocalTrigger* locTrg = static_cast<AliMUONLocalTrigger*>(triggerStore.FindLocal(loTrgNum));
-
- if (locTrg)
- {
- track->SetLocalTrigger(locTrg->LoCircuit(),
- locTrg->LoStripX(),
- locTrg->LoStripY(),
- locTrg->LoDev(),
- locTrg->LoLpt(),
- locTrg->LoHpt());
- }
- }
-
- trackHitPattern.GetHitPattern(trackStore,triggerStore);
+ trackHitPattern.ExecuteValidation(trackStore, triggerTrackStore, triggerStore);
+ trackHitPattern.UpdateQA();
}
//__________________________________________________________________________
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff