#include <RecoMuon/MuonIdentification/src/MuonTimingFiller.cc>

Public Member Functions
void	fillTiming (const reco::Muon &muon, reco::MuonTimeExtra &dtTime, reco::MuonTimeExtra &cscTime, reco::MuonTimeExtra &combinedTime, edm::Event &iEvent, const edm::EventSetup &iSetup)
	MuonTimingFiller (const edm::ParameterSet &)
	~MuonTimingFiller ()
Private Member Functions
void	addEcalTime (const reco::Muon &muon, TimeMeasurementSequence &cmbSeq)
void	combineTMSequences (const reco::Muon &muon, TimeMeasurementSequence dtSeq, TimeMeasurementSequence cscSeq, TimeMeasurementSequence &cmbSeq)
void	fillTimeFromMeasurements (TimeMeasurementSequence tmSeq, reco::MuonTimeExtra &muTime)
void	rawFit (double &a, double &da, double &b, double &db, const std::vector< double > hitsx, const std::vector< double > hitsy)
Private Attributes
double	ecalEcut_
double	errorEB_
double	errorEE_
CSCTimingExtractor *	theCSCTimingExtractor_
DTTimingExtractor *	theDTTimingExtractor_
bool	useCSC_
bool	useDT_
bool	useECAL_

Detailed Description

Description: Class filling the DT, CSC and Combined MuonTimeExtra objects

Implementation: <Notes on="" implementation>="">

Description: <one line="" class="" summary>="">

Implementation: <Notes on="" implementation>="">

Definition at line 43 of file MuonTimingFiller.h.

Constructor & Destructor Documentation

MuonTimingFiller::MuonTimingFiller ( const edm::ParameterSet & iConfig )

Definition at line 44 of file MuonTimingFiller.cc.

References ecalEcut_, errorEB_, errorEE_, edm::ParameterSet::getParameter(), theCSCTimingExtractor_, theDTTimingExtractor_, useCSC_, useDT_, and useECAL_.

{
   // Load parameters for the DTTimingExtractor
   edm::ParameterSet dtTimingParameters = iConfig.getParameter<edm::ParameterSet>("DTTimingParameters");
   theDTTimingExtractor_ = new DTTimingExtractor(dtTimingParameters);

   // Load parameters for the CSCTimingExtractor
   edm::ParameterSet cscTimingParameters = iConfig.getParameter<edm::ParameterSet>("CSCTimingParameters");
   theCSCTimingExtractor_ = new CSCTimingExtractor(cscTimingParameters);
   
   errorEB_ = iConfig.getParameter<double>("ErrorEB");
   errorEE_ = iConfig.getParameter<double>("ErrorEE");
   ecalEcut_ = iConfig.getParameter<double>("EcalEnergyCut");
   
   useDT_ = iConfig.getParameter<bool>("UseDT");
   useCSC_ = iConfig.getParameter<bool>("UseCSC");
   useECAL_ = iConfig.getParameter<bool>("UseECAL");
   
}

MuonTimingFiller::~MuonTimingFiller ( )

Definition at line 65 of file MuonTimingFiller.cc.

References theCSCTimingExtractor_, and theDTTimingExtractor_.

{
  if (theDTTimingExtractor_) delete theDTTimingExtractor_;
  if (theCSCTimingExtractor_) delete theCSCTimingExtractor_;
}

Member Function Documentation

void MuonTimingFiller::addEcalTime	(	const reco::Muon &	muon,
		TimeMeasurementSequence &	cmbSeq
	)		`[private]`

Definition at line 192 of file MuonTimingFiller.cc.

References reco::Muon::calEnergy(), TimeMeasurementSequence::dstnc, reco::MuonEnergy::ecal_id, reco::MuonEnergy::ecal_position, reco::MuonEnergy::ecal_time, EcalBarrel, ecalEcut_, reco::MuonEnergy::emMax, errorEB_, errorEE_, reco::Muon::isEnergyValid(), TimeMeasurementSequence::local_t0, DetId::subdetId(), TimeMeasurementSequence::totalWeightInvbeta, TimeMeasurementSequence::totalWeightVertex, TimeMeasurementSequence::weightInvbeta, and TimeMeasurementSequence::weightVertex.

Referenced by fillTiming().

                                                                 {

  reco::MuonEnergy muonE;
  if (muon.isEnergyValid())  
    muonE = muon.calEnergy();
  
  // Cut on the crystal energy and restrict to the ECAL barrel for now
//  if (muonE.emMax<ecalEcut_ || fabs(muon.eta())>1.5) return;    
  if (muonE.emMax<ecalEcut_) return;    
  
  // A simple parametrization of the error on the ECAL time measurement
  double emErr;
  if (muonE.ecal_id.subdetId()==EcalBarrel) emErr= errorEB_/muonE.emMax; else
    emErr=errorEE_/muonE.emMax;
  double hitWeight = 1/(emErr*emErr);
  double hitDist=muonE.ecal_position.r();
        
  cmbSeq.local_t0.push_back(muonE.ecal_time);
  cmbSeq.weightVertex.push_back(hitWeight);
  cmbSeq.weightInvbeta.push_back(hitDist*hitDist*hitWeight/(30.*30.));

  cmbSeq.dstnc.push_back(hitDist);
  
  cmbSeq.totalWeightVertex+=hitWeight;
  cmbSeq.totalWeightInvbeta+=hitDist*hitDist*hitWeight/(30.*30.);
                                      
}

void MuonTimingFiller::combineTMSequences	(	const reco::Muon &	muon,
		TimeMeasurementSequence	dtSeq,
		TimeMeasurementSequence	cscSeq,
		TimeMeasurementSequence &	cmbSeq
	)		`[private]`

Definition at line 164 of file MuonTimingFiller.cc.

References TimeMeasurementSequence::dstnc, i, TimeMeasurementSequence::local_t0, TimeMeasurementSequence::totalWeightInvbeta, TimeMeasurementSequence::totalWeightVertex, useCSC_, useDT_, TimeMeasurementSequence::weightInvbeta, and TimeMeasurementSequence::weightVertex.

Referenced by fillTiming().

                                                                        {
                                        
  if (useDT_) for (unsigned int i=0;i<dtSeq.dstnc.size();i++) {
    cmbSeq.dstnc.push_back(dtSeq.dstnc.at(i));
    cmbSeq.local_t0.push_back(dtSeq.local_t0.at(i));
    cmbSeq.weightVertex.push_back(dtSeq.weightVertex.at(i));
    cmbSeq.weightInvbeta.push_back(dtSeq.weightInvbeta.at(i));

    cmbSeq.totalWeightVertex+=dtSeq.weightVertex.at(i);
    cmbSeq.totalWeightInvbeta+=dtSeq.weightInvbeta.at(i);
  }

  if (useCSC_) for (unsigned int i=0;i<cscSeq.dstnc.size();i++) {
    cmbSeq.dstnc.push_back(cscSeq.dstnc.at(i));
    cmbSeq.local_t0.push_back(cscSeq.local_t0.at(i));
    cmbSeq.weightVertex.push_back(cscSeq.weightVertex.at(i));
    cmbSeq.weightInvbeta.push_back(cscSeq.weightInvbeta.at(i));

    cmbSeq.totalWeightVertex+=cscSeq.weightVertex.at(i);
    cmbSeq.totalWeightInvbeta+=cscSeq.weightInvbeta.at(i);
  }
}

void MuonTimingFiller::fillTimeFromMeasurements	(	TimeMeasurementSequence	tmSeq,
		reco::MuonTimeExtra &	muTime
	)		`[private]`

Definition at line 116 of file MuonTimingFiller.cc.

Referenced by fillTiming().

                                                                                                     {

  std::vector <double> x,y;
  double invbeta=0, invbetaerr=0;
  double vertexTime=0, vertexTimeErr=0, vertexTimeR=0, vertexTimeRErr=0;    
  double freeBeta, freeBetaErr, freeTime, freeTimeErr;

  if (tmSeq.dstnc.size()<=1) return;

  for (unsigned int i=0;i<tmSeq.dstnc.size();i++) {
    invbeta+=(1.+tmSeq.local_t0.at(i)/tmSeq.dstnc.at(i)*30.)*tmSeq.weightInvbeta.at(i)/tmSeq.totalWeightInvbeta;
    x.push_back(tmSeq.dstnc.at(i)/30.);
    y.push_back(tmSeq.local_t0.at(i)+tmSeq.dstnc.at(i)/30.);
    vertexTime+=tmSeq.local_t0.at(i)*tmSeq.weightVertex.at(i)/tmSeq.totalWeightVertex;
    vertexTimeR+=(tmSeq.local_t0.at(i)+2*tmSeq.dstnc.at(i)/30.)*tmSeq.weightVertex.at(i)/tmSeq.totalWeightVertex;
  }

  double diff;
  for (unsigned int i=0;i<tmSeq.dstnc.size();i++) {
    diff=(1.+tmSeq.local_t0.at(i)/tmSeq.dstnc.at(i)*30.)-invbeta;
    invbetaerr+=diff*diff*tmSeq.weightInvbeta.at(i);
    diff=tmSeq.local_t0.at(i)-vertexTime;
    vertexTimeErr+=diff*diff*tmSeq.weightVertex.at(i);
    diff=tmSeq.local_t0.at(i)+2*tmSeq.dstnc.at(i)/30.-vertexTimeR;
    vertexTimeRErr+=diff*diff*tmSeq.weightVertex.at(i);
  }
  
  double cf = 1./(tmSeq.dstnc.size()-1);
  invbetaerr=sqrt(invbetaerr/tmSeq.totalWeightInvbeta*cf);
  vertexTimeErr=sqrt(vertexTimeErr/tmSeq.totalWeightVertex*cf);
  vertexTimeRErr=sqrt(vertexTimeRErr/tmSeq.totalWeightVertex*cf);

  muTime.setInverseBeta(invbeta);
  muTime.setInverseBetaErr(invbetaerr);
  muTime.setTimeAtIpInOut(vertexTime);
  muTime.setTimeAtIpInOutErr(vertexTimeErr);
  muTime.setTimeAtIpOutIn(vertexTimeR);
  muTime.setTimeAtIpOutInErr(vertexTimeRErr);
      
  rawFit(freeBeta, freeBetaErr, freeTime, freeTimeErr, x, y);

  muTime.setFreeInverseBeta(freeBeta);
  muTime.setFreeInverseBetaErr(freeBetaErr);
    
  muTime.setNDof(tmSeq.dstnc.size());
}

void MuonTimingFiller::fillTiming	(	const reco::Muon &	muon,
		reco::MuonTimeExtra &	dtTime,
		reco::MuonTimeExtra &	cscTime,
		reco::MuonTimeExtra &	combinedTime,
		edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

Definition at line 77 of file MuonTimingFiller.cc.

Referenced by MuonIdProducer::produce(), and MuonTimingProducer::produce().

{
  TimeMeasurementSequence dtTmSeq,cscTmSeq;
     
  if ( !(muon.combinedMuon().isNull()) ) {
    theDTTimingExtractor_->fillTiming(dtTmSeq, muon.combinedMuon(), iEvent, iSetup);
    theCSCTimingExtractor_->fillTiming(cscTmSeq, muon.combinedMuon(), iEvent, iSetup);
  } else
    if ( !(muon.standAloneMuon().isNull()) ) {
      theDTTimingExtractor_->fillTiming(dtTmSeq, muon.standAloneMuon(), iEvent, iSetup);
      theCSCTimingExtractor_->fillTiming(cscTmSeq, muon.standAloneMuon(), iEvent, iSetup);
    }
  
  // Fill DT-specific timing information block     
  fillTimeFromMeasurements(dtTmSeq, dtTime);

  // Fill CSC-specific timing information block     
  fillTimeFromMeasurements(cscTmSeq, cscTime);
       
  // Combine the TimeMeasurementSequences from all subdetectors
  TimeMeasurementSequence combinedTmSeq;
  combineTMSequences(muon,dtTmSeq,cscTmSeq,combinedTmSeq);
  // add ECAL info
  if (useECAL_) addEcalTime(muon,combinedTmSeq);

  // Fill the master timing block
  fillTimeFromMeasurements(combinedTmSeq, combinedTime);
    
  LogTrace("MuonTime") << "Global 1/beta: " << combinedTime.inverseBeta() << " +/- " << combinedTime.inverseBetaErr()<<std::endl;
  LogTrace("MuonTime") << "  Free 1/beta: " << combinedTime.freeInverseBeta() << " +/- " << combinedTime.freeInverseBetaErr()<<std::endl;
  LogTrace("MuonTime") << "  Vertex time (in-out): " << combinedTime.timeAtIpInOut() << " +/- " << combinedTime.timeAtIpInOutErr()
                       << "  # of points: " << combinedTime.nDof() <<std::endl;
  LogTrace("MuonTime") << "  Vertex time (out-in): " << combinedTime.timeAtIpOutIn() << " +/- " << combinedTime.timeAtIpOutInErr()<<std::endl;
  LogTrace("MuonTime") << "  direction: "   << combinedTime.direction() << std::endl;
     
}

void MuonTimingFiller::rawFit	(	double &	a,
		double &	da,
		double &	b,
		double &	db,
		const std::vector< double >	hitsx,
		const std::vector< double >	hitsy
	)		`[private]`

Definition at line 445 of file DTMeantimerPatternReco.cc.

References i, alignCSCRings::s, x, and detailsBasic3DVector::y.

Referenced by fillTimeFromMeasurements().

                                                                                              {

  double s=0,sx=0,sy=0,x,y;
  double sxx=0,sxy=0;

  a=b=0;
  if (hits.size()==0) return;
    
  if (hits.size()==1) {
    b=(*(hits.begin())).second;
  } else {
    for (unsigned int i = 0; i != hits.size(); i++) {
      x=hits[i].first;
      y=hits[i].second;
      sy += y;
      sxy+= x*y;
      s += 1.;
      sx += x;
      sxx += x*x;
    }
    // protect against a vertical line???

    double d = s*sxx - sx*sx;
    b = (sxx*sy- sx*sxy)/ d;
    a = (s*sxy - sx*sy) / d;
  }
}