#include <MuonTrackLoader.h>

Public Types
typedef MuonCandidate::CandidateContainer	CandidateContainer
typedef MuonCandidate::TrajectoryContainer	TrajectoryContainer
Public Member Functions
edm::OrphanHandle < reco::TrackCollection >	loadTracks (const TrajectoryContainer &, edm::Event &, const std::string &="", bool=true)
	Convert the trajectories into tracks and load the tracks in the event.
edm::OrphanHandle < reco::MuonTrackLinksCollection >	loadTracks (const CandidateContainer &, edm::Event &)
	Convert the trajectories into tracks and load the tracks in the event.
edm::OrphanHandle < reco::TrackCollection >	loadTracks (const TrajectoryContainer &, edm::Event &, std::vector< std::pair< Trajectory *, reco::TrackRef > >, const std::string &="", bool=true)
	Convert the trajectories into tracks and load the tracks in the event.
	MuonTrackLoader (edm::ParameterSet &parameterSet, const MuonServiceProxy *service=0)
	Constructor for the STA reco the args must be specify!
virtual	~MuonTrackLoader ()
	Destructor.
Private Member Functions
std::pair< bool, reco::Track >	buildTrackAtPCA (const Trajectory &trajectory, const reco::BeamSpot &) const
	Build a track at the PCA WITHOUT any vertex constriant.
reco::TrackExtra	buildTrackExtra (const Trajectory &) const
std::pair< bool, reco::Track >	buildTrackUpdatedAtPCA (const reco::Track &trackAtPCA, const reco::BeamSpot &) const
	Takes a track at the PCA and applies the vertex constriant.
Private Attributes
bool	theAllowNoVtxFlag
edm::InputTag	theBeamSpotInputTag
std::string	theL2SeededTkLabel
	Label for L2SeededTracks.
bool	thePutTkTrackFlag
const MuonServiceProxy *	theService
edm::ESHandle< TrajectorySmoother >	theSmoother
std::string	theSmootherName
bool	theSmoothingStep
bool	theSmoothTkTrackFlag
bool	theTrajectoryFlag
bool	theUpdatingAtVtx
MuonUpdatorAtVertex *	theUpdatorAtVtx

Detailed Description

Class to load the tracks in the event, it provide some common functionalities both for all the RecoMuon producers.

Date:: 2010/05/10 00:29:25

Revision:: 1.29

Author:: R. Bellan - INFN Torino <riccardo.bellan@cern.ch>

Class to load the product in the event

Date:: 2011/01/10 00:17:45

Revision:: 1.87

Author:: R. Bellan - INFN Torino <riccardo.bellan@cern.ch>

Definition at line 36 of file MuonTrackLoader.h.

Member Typedef Documentation

typedef MuonCandidate::CandidateContainer MuonTrackLoader::CandidateContainer

Definition at line 40 of file MuonTrackLoader.h.

typedef MuonCandidate::TrajectoryContainer MuonTrackLoader::TrajectoryContainer

Definition at line 39 of file MuonTrackLoader.h.

Constructor & Destructor Documentation

MuonTrackLoader::MuonTrackLoader	(	edm::ParameterSet &	parameterSet,
		const MuonServiceProxy *	service = `0`
	)

Constructor for the STA reco the args must be specify!

Definition at line 46 of file MuonTrackLoader.cc.

References edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), MuonUpdatorAtVertex_cff::MuonUpdatorAtVertex, theAllowNoVtxFlag, theBeamSpotInputTag, theL2SeededTkLabel, thePutTkTrackFlag, theSmootherName, theSmoothingStep, theSmoothTkTrackFlag, theTrajectoryFlag, theUpdatingAtVtx, and theUpdatorAtVtx.

                                                                                           : 
  theService(service){

  // option to do or not the smoothing step.
  // the trajectories which are passed to the track loader are supposed to be non-smoothed
  theSmoothingStep = parameterSet.getParameter<bool>("DoSmoothing");
  if(theSmoothingStep)
    theSmootherName = parameterSet.getParameter<string>("Smoother");  
  
  // update at vertex
  theUpdatingAtVtx = parameterSet.getParameter<bool>("VertexConstraint");

  // beam spot input tag
  theBeamSpotInputTag = parameterSet.getParameter<edm::InputTag>("beamSpot");
  
  // Flag to put the trajectory into the event
  theTrajectoryFlag = parameterSet.getUntrackedParameter<bool>("PutTrajectoryIntoEvent",true);

  theL2SeededTkLabel = parameterSet.getUntrackedParameter<string>("MuonSeededTracksInstance",string());
  
  ParameterSet updatorPar = parameterSet.getParameter<ParameterSet>("MuonUpdatorAtVertexParameters");
  theUpdatorAtVtx = new MuonUpdatorAtVertex(updatorPar,service);

  thePutTkTrackFlag = parameterSet.getUntrackedParameter<bool>("PutTkTrackIntoEvent",false);
  theSmoothTkTrackFlag = parameterSet.getUntrackedParameter<bool>("SmoothTkTrack",false);
  theAllowNoVtxFlag = parameterSet.getUntrackedParameter<bool>("AllowNoVertex",false);
}

MuonTrackLoader::~MuonTrackLoader ( ) [virtual]

Destructor.

Definition at line 74 of file MuonTrackLoader.cc.

References theUpdatorAtVtx.

                                 {
  if(theUpdatorAtVtx) delete theUpdatorAtVtx;
}

Member Function Documentation

pair< bool, reco::Track > MuonTrackLoader::buildTrackAtPCA	(	const Trajectory &	trajectory,
		const reco::BeamSpot &	beamSpot
	)		const `[private]`

Build a track at the PCA WITHOUT any vertex constriant.

Definition at line 561 of file MuonTrackLoader.cc.

References FreeTrajectoryState::charge(), Trajectory::chiSquared(), FreeTrajectoryState::curvilinearError(), debug, MuonPatternRecoDumper::dumpFTS(), TrajectoryStateOnSurface::freeState(), Trajectory::geometricalInnermostState(), TrajectoryStateOnSurface::globalPosition(), TrackerBounds::isInside(), LogTrace, FreeTrajectoryState::momentum(), Trajectory::ndof(), L1TEmulatorMonitor_cff::p, FreeTrajectoryState::position(), MuonUpdatorAtVertex::propagate(), theAllowNoVtxFlag, theService, theUpdatorAtVtx, ExpressReco_HICollisions_FallBack::track, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                                                      {

  const string metname = "Muon|RecoMuon|MuonTrackLoader";

  MuonPatternRecoDumper debug;
  
  // FIXME: check the prop direction
  TrajectoryStateOnSurface innerTSOS = trajectory.geometricalInnermostState();
  
  // This is needed to extrapolate the tsos at vertex
  LogTrace(metname) << "Propagate to PCA...";
  pair<bool,FreeTrajectoryState> 
    extrapolationResult = theUpdatorAtVtx->propagate(innerTSOS, beamSpot);  
  FreeTrajectoryState ftsAtVtx;
  
  if(extrapolationResult.first)
    ftsAtVtx = extrapolationResult.second;
  else{    
    if(TrackerBounds::isInside(innerTSOS.globalPosition())){
      LogInfo(metname) << "Track in the Tracker: taking the innermost state instead of the state at PCA";
      ftsAtVtx = *innerTSOS.freeState();
    }
    else{
      if ( theAllowNoVtxFlag ) {
        LogInfo(metname) << "Propagation to PCA failed, taking the innermost state instead of the state at PCA";
        ftsAtVtx = *innerTSOS.freeState();
      } else {
        LogInfo(metname) << "Stand Alone track: this track will be rejected";
        return pair<bool,reco::Track>(false,reco::Track());
      }
    }
  }
    
  LogTrace(metname) << "TSOS after the extrapolation at vtx";
  LogTrace(metname) << debug.dumpFTS(ftsAtVtx);
  
  GlobalPoint pca = ftsAtVtx.position();
  math::XYZPoint persistentPCA(pca.x(),pca.y(),pca.z());
  GlobalVector p = ftsAtVtx.momentum();
  math::XYZVector persistentMomentum(p.x(),p.y(),p.z());

  bool bon = true;
  if(fabs(theService->magneticField()->inTesla(GlobalPoint(0,0,0)).z()) < 0.01) bon=false;   
  double ndof = trajectory.ndof(bon);
  
  reco::Track track(trajectory.chiSquared(), 
                    ndof,
                    persistentPCA,
                    persistentMomentum,
                    ftsAtVtx.charge(),
                    ftsAtVtx.curvilinearError());
  
  return pair<bool,reco::Track>(true,track);
}

reco::TrackExtra MuonTrackLoader::buildTrackExtra ( const Trajectory & trajectory ) const [private]

Definition at line 655 of file MuonTrackLoader.cc.

References alongMomentum, BoundSurface::bounds(), TrajectoryStateOnSurface::curvilinearError(), Trajectory::direction(), Trajectory::firstMeasurement(), TrajectoryStateOnSurface::globalParameters(), Bounds::inside(), Trajectory::lastMeasurement(), LogTrace, GlobalTrajectoryParameters::momentum(), oppositeToMomentum, L1TEmulatorMonitor_cff::p, GlobalTrajectoryParameters::position(), TrajectoryMeasurement::recHit(), Trajectory::recHits(), Trajectory::seedRef(), GeomDet::surface(), theService, GeomDet::toLocal(), TrajectoryMeasurement::updatedState(), v, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                  {

  const string metname = "Muon|RecoMuon|MuonTrackLoader";

  const Trajectory::RecHitContainer transRecHits = trajectory.recHits();
  
  // put the collection of TrackingRecHit in the event
  
  // sets the outermost and innermost TSOSs
  // FIXME: check it!
  TrajectoryStateOnSurface outerTSOS;
  TrajectoryStateOnSurface innerTSOS;
  unsigned int innerId=0, outerId=0;
  TrajectoryMeasurement::ConstRecHitPointer outerRecHit;
  DetId outerDetId;

  if (trajectory.direction() == alongMomentum) {
    LogTrace(metname)<<"alongMomentum";
    outerTSOS = trajectory.lastMeasurement().updatedState();
    innerTSOS = trajectory.firstMeasurement().updatedState();
    outerId = trajectory.lastMeasurement().recHit()->geographicalId().rawId();
    innerId = trajectory.firstMeasurement().recHit()->geographicalId().rawId();
    outerRecHit =  trajectory.lastMeasurement().recHit();
    outerDetId =   trajectory.lastMeasurement().recHit()->geographicalId();
  } 
  else if (trajectory.direction() == oppositeToMomentum) {
    LogTrace(metname)<<"oppositeToMomentum";
    outerTSOS = trajectory.firstMeasurement().updatedState();
    innerTSOS = trajectory.lastMeasurement().updatedState();
    outerId = trajectory.firstMeasurement().recHit()->geographicalId().rawId();
    innerId = trajectory.lastMeasurement().recHit()->geographicalId().rawId();
    outerRecHit =  trajectory.firstMeasurement().recHit();
    outerDetId =   trajectory.firstMeasurement().recHit()->geographicalId();
  }
  else LogError(metname)<<"Wrong propagation direction!";
  
  const GeomDet *outerDet = theService->trackingGeometry()->idToDet(outerDetId);
  GlobalPoint outerTSOSPos = outerTSOS.globalParameters().position();
  bool inside = outerDet->surface().bounds().inside(outerDet->toLocal(outerTSOSPos));

  
  GlobalPoint hitPos = (outerRecHit->isValid()) ? outerRecHit->globalPosition() :  outerTSOS.globalParameters().position() ;
  
  if(!inside) {
    LogTrace(metname)<<"The Global Muon outerMostMeasurementState is not compatible with the recHit detector! Setting outerMost postition to recHit position if recHit isValid: " << outerRecHit->isValid();
    LogTrace(metname)<<"From " << outerTSOSPos << " to " <<  hitPos;
  }
  
  
  //build the TrackExtra
  GlobalPoint v = (inside) ? outerTSOSPos : hitPos ;
  GlobalVector p = outerTSOS.globalParameters().momentum();
  math::XYZPoint  outpos( v.x(), v.y(), v.z() );   
  math::XYZVector outmom( p.x(), p.y(), p.z() );
  
  v = innerTSOS.globalParameters().position();
  p = innerTSOS.globalParameters().momentum();
  math::XYZPoint  inpos( v.x(), v.y(), v.z() );   
  math::XYZVector inmom( p.x(), p.y(), p.z() );

  reco::TrackExtra trackExtra(outpos, outmom, true, inpos, inmom, true,
                              outerTSOS.curvilinearError(), outerId,
                              innerTSOS.curvilinearError(), innerId,
                              trajectory.direction(),trajectory.seedRef());
  
  return trackExtra;
 
}

pair< bool, reco::Track > MuonTrackLoader::buildTrackUpdatedAtPCA	(	const reco::Track &	trackAtPCA,
		const reco::BeamSpot &	beamSpot
	)		const `[private]`

Takes a track at the PCA and applies the vertex constriant.

Definition at line 617 of file MuonTrackLoader.cc.

References FreeTrajectoryState::charge(), reco::TrackBase::chi2(), FreeTrajectoryState::curvilinearError(), debug, MuonPatternRecoDumper::dumpFTS(), LogTrace, FreeTrajectoryState::momentum(), reco::TrackBase::ndof(), L1TEmulatorMonitor_cff::p, FreeTrajectoryState::position(), theService, theUpdatorAtVtx, MuonUpdatorAtVertex::update(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                                                       {

  const string metname = "Muon|RecoMuon|MuonTrackLoader";
  MuonPatternRecoDumper debug;
 
  // build the transient track
  reco::TransientTrack transientTrack(track,
                                      &*theService->magneticField(),
                                      theService->trackingGeometry());

  LogTrace(metname) << "Apply the vertex constraint";
  pair<bool,FreeTrajectoryState> updateResult = theUpdatorAtVtx->update(transientTrack,beamSpot);

  if(!updateResult.first){
    return pair<bool,reco::Track>(false,reco::Track());
  }

  LogTrace(metname) << "FTS after the vertex constraint";
  FreeTrajectoryState &ftsAtVtx = updateResult.second;

  LogTrace(metname) << debug.dumpFTS(ftsAtVtx);
  
  GlobalPoint pca = ftsAtVtx.position();
  math::XYZPoint persistentPCA(pca.x(),pca.y(),pca.z());
  GlobalVector p = ftsAtVtx.momentum();
  math::XYZVector persistentMomentum(p.x(),p.y(),p.z());
  
  reco::Track updatedTrack(track.chi2(), 
                           track.ndof(),
                           persistentPCA,
                           persistentMomentum,
                           ftsAtVtx.charge(),
                           ftsAtVtx.curvilinearError());
  
  return pair<bool,reco::Track>(true,updatedTrack);
}

edm::OrphanHandle<reco::TrackCollection> MuonTrackLoader::loadTracks	(	const TrajectoryContainer &	,
		edm::Event &	,
		std::vector< std::pair< Trajectory *, reco::TrackRef > >	,
		const std::string &	= `""`,
		bool	= `true`
	)

Convert the trajectories into tracks and load the tracks in the event.

OrphanHandle< reco::MuonTrackLinksCollection > MuonTrackLoader::loadTracks	(	const CandidateContainer &	muonCands,
		edm::Event &	event
	)

Convert the trajectories into tracks and load the tracks in the event.

Definition at line 284 of file MuonTrackLoader.cc.

References edm::OrphanHandleBase::isValid(), loadTracks(), LogDebug, LogTrace, position, reco::MuonTrackLinks::setStandAloneTrack(), reco::MuonTrackLinks::setTrackerTrack(), theL2SeededTkLabel, thePutTkTrackFlag, theSmoothTkTrackFlag, and ExpressReco_HICollisions_FallBack::trackCollection.

                                          {

  const string metname = "Muon|RecoMuon|MuonTrackLoader";
  
  // the muon collection, it will be loaded in the event
  auto_ptr<reco::MuonTrackLinksCollection> trackLinksCollection(new reco::MuonTrackLinksCollection());
  
  // don't waste any time...
  if ( muonCands.empty() ) {
    auto_ptr<reco::TrackExtraCollection> trackExtraCollection(new reco::TrackExtraCollection() );
    auto_ptr<TrackingRecHitCollection> recHitCollection(new TrackingRecHitCollection() );
    auto_ptr<reco::TrackCollection> trackCollection( new reco::TrackCollection() );

    event.put(recHitCollection);
    event.put(trackExtraCollection);
    event.put(trackCollection);

    //need to also put the tracker tracks collection if requested
    if(thePutTkTrackFlag){
      //will take care of putting nothing in the event but the empty collection
      TrajectoryContainer trackerTrajs;
      loadTracks(trackerTrajs, event, theL2SeededTkLabel, theSmoothTkTrackFlag);
    } 

    return event.put(trackLinksCollection);
  }
  
  // get combined Trajectories
  TrajectoryContainer combinedTrajs;
  TrajectoryContainer trackerTrajs;
  for (CandidateContainer::const_iterator it = muonCands.begin(); it != muonCands.end(); it++) {
    LogDebug(metname) << "Loader glbSeedRef " << (*it)->trajectory()->seedRef().isNonnull();
    if ((*it)->trackerTrajectory() )  LogDebug(metname) << " " << "tkSeedRef " << (*it)->trackerTrajectory()->seedRef().isNonnull();

    combinedTrajs.push_back((*it)->trajectory());
    if ( thePutTkTrackFlag ) trackerTrajs.push_back((*it)->trackerTrajectory());

    else {
      if ((*it)->trackerTrajectory()) delete ((*it)->trackerTrajectory());
    }
  
    // Create the links between sta and tracker tracks
    reco::MuonTrackLinks links;
    links.setStandAloneTrack((*it)->muonTrack());
    links.setTrackerTrack((*it)->trackerTrack());
    trackLinksCollection->push_back(links);
    delete *it;
  }
  
  // create the TrackCollection of combined Trajectories
  // FIXME: could this be done one track at a time in the previous loop?
  LogTrace(metname) << "Build combinedTracks";
  OrphanHandle<reco::TrackCollection> combinedTracks = loadTracks(combinedTrajs, event);

  OrphanHandle<reco::TrackCollection> trackerTracks;
  if(thePutTkTrackFlag) {
    LogTrace(metname) << "Build trackerTracks: "
                      << trackerTrajs.size();
    trackerTracks = loadTracks(trackerTrajs, event, theL2SeededTkLabel, theSmoothTkTrackFlag);
  } else {
    for (TrajectoryContainer::iterator it = trackerTrajs.begin(); it != trackerTrajs.end(); ++it) {
        if(*it) delete *it;
    }
  }

  LogTrace(metname) << "Set the final links in the MuonTrackLinks collection";

  reco::MuonTrackLinksCollection::iterator links = trackLinksCollection->begin();
  for ( unsigned int position = 0; position != combinedTracks->size(); ++position, ++links) {
    reco::TrackRef combinedTR(combinedTracks, position);

    reco::TrackRef trackerTR;
    if(thePutTkTrackFlag) trackerTR = reco::TrackRef(trackerTracks, position);

    // fill the combined information.
    links->setGlobalTrack(combinedTR);
    if(thePutTkTrackFlag) links->setTrackerTrack(trackerTR);
  }

  if( thePutTkTrackFlag && trackerTracks.isValid() && !(combinedTracks->size() > 0 && trackerTracks->size() > 0 ) )
    LogWarning(metname)<<"The MuonTrackLinkCollection is incomplete"; 
  
  // put the MuonCollection in the event
  LogTrace(metname) << "put the MuonCollection in the event" << "\n";
  
  return event.put(trackLinksCollection);
}