MuonTrackLoader Class Reference

#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. More...
edm::OrphanHandle < reco::TrackCollection >	loadTracks (const TrajectoryContainer &, edm::Event &, std::vector< bool > &, const std::string &="", bool=true)
	Convert the trajectories into tracks and load the tracks in the event. More...
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. More...
edm::OrphanHandle < reco::MuonTrackLinksCollection >	loadTracks (const CandidateContainer &, edm::Event &)
	Convert the trajectories into tracks and load the tracks in the event. More...
	MuonTrackLoader (edm::ParameterSet &parameterSet, const MuonServiceProxy *service=0)
	Constructor for the STA reco the args must be specify! More...
virtual	~MuonTrackLoader ()
	Destructor. More...

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. More...
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. More...

Private Attributes
bool	theAllowNoVtxFlag
edm::InputTag	theBeamSpotInputTag
std::string	theL2SeededTkLabel
	Label for L2SeededTracks. More...
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:

2012/08/16 16:25:56

Revision:

1.30

Author

R. Bellan - INFN Torino ricca.nosp@m.rdo..nosp@m.bella.nosp@m.n@ce.nosp@m.rn.ch

Class to load the product in the event

Date:

2012/08/16 16:26:08

Revision:

1.89

Author

R. Bellan - INFN Torino ricca.nosp@m.rdo..nosp@m.bella.nosp@m.n@ce.nosp@m.rn.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 594 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(), AlCaHLTBitMon_ParallelJobs::p, FreeTrajectoryState::position(), MuonUpdatorAtVertex::propagate(), theAllowNoVtxFlag, theService, theUpdatorAtVtx, 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 688 of file MuonTrackLoader.cc.

References alongMomentum, BoundSurface::bounds(), TrajectoryStateOnSurface::curvilinearError(), Trajectory::direction(), Trajectory::firstMeasurement(), TrajectoryStateOnSurface::globalParameters(), Bounds::inside(), Trajectory::lastMeasurement(), LogTrace, GlobalTrajectoryParameters::momentum(), oppositeToMomentum, AlCaHLTBitMon_ParallelJobs::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 650 of file MuonTrackLoader.cc.

References FreeTrajectoryState::charge(), reco::TrackBase::chi2(), FreeTrajectoryState::curvilinearError(), debug, MuonPatternRecoDumper::dumpFTS(), LogTrace, FreeTrajectoryState::momentum(), reco::TrackBase::ndof(), AlCaHLTBitMon_ParallelJobs::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 &	,
		const std::string &	= "",
		bool	= true
	)

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

Referenced by MuonTrackFinder::load(), and loadTracks().

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

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

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 292 of file MuonTrackLoader.cc.

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

                              {

  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";
  std::vector<bool> combTksVec(combinedTrajs.size(), false); 
  OrphanHandle<reco::TrackCollection> combinedTracks = loadTracks(combinedTrajs, event, combTksVec);

  OrphanHandle<reco::TrackCollection> trackerTracks;
  std::vector<bool> trackerTksVec(trackerTrajs.size(), false); 
  if(thePutTkTrackFlag) {
    LogTrace(metname) << "Build trackerTracks: "
              << trackerTrajs.size();
    trackerTracks = loadTracks(trackerTrajs, event, trackerTksVec, 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";

  unsigned int candposition(0), position(0), tkposition(0);
  //reco::TrackCollection::const_iterator glIt = combinedTracks->begin(), 
  //  glEnd = combinedTracks->end();

  for (CandidateContainer::const_iterator it = muonCands.begin(); it != muonCands.end(); ++it, ++candposition) {

    // The presence of the global track determines whether to fill the MuonTrackLinks or not
    // N.B. We are assuming here that the global tracks in "combinedTracks" 
    //      have the same order as the muon candidates in "muonCands"
    //      (except for possible missing tracks), which should always be the case...
    //if( glIt == glEnd ) break;
    if(combTksVec[candposition]) {
      reco::TrackRef combinedTR(combinedTracks, position++);
      //++glIt;

      // Create the links between sta and tracker tracks
      reco::MuonTrackLinks links;
      links.setStandAloneTrack((*it)->muonTrack());
      links.setTrackerTrack((*it)->trackerTrack());
      links.setGlobalTrack(combinedTR);

      if(thePutTkTrackFlag && trackerTksVec[candposition]) {
    reco::TrackRef trackerTR(trackerTracks, tkposition++);
    links.setTrackerTrack(trackerTR);
      }

      trackLinksCollection->push_back(links);
    }

    else { // if no global track, still increment the tracker-track counter when appropriate
      if(thePutTkTrackFlag && trackerTksVec[candposition]) tkposition++; 
    }

    delete *it;
  }

  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);
} 

Member Data Documentation

bool MuonTrackLoader::theAllowNoVtxFlag

private

Definition at line 96 of file MuonTrackLoader.h.

Referenced by buildTrackAtPCA(), and MuonTrackLoader().

edm::InputTag MuonTrackLoader::theBeamSpotInputTag

private

Definition at line 90 of file MuonTrackLoader.h.

Referenced by MuonTrackLoader().

std::string MuonTrackLoader::theL2SeededTkLabel

private

Label for L2SeededTracks.

Definition at line 93 of file MuonTrackLoader.h.

Referenced by loadTracks(), and MuonTrackLoader().

bool MuonTrackLoader::thePutTkTrackFlag

private

Definition at line 94 of file MuonTrackLoader.h.

Referenced by loadTracks(), and MuonTrackLoader().

const MuonServiceProxy* MuonTrackLoader::theService

private

Definition at line 79 of file MuonTrackLoader.h.

Referenced by buildTrackAtPCA(), buildTrackExtra(), and buildTrackUpdatedAtPCA().

edm::ESHandle<TrajectorySmoother> MuonTrackLoader::theSmoother

private

Definition at line 88 of file MuonTrackLoader.h.

std::string MuonTrackLoader::theSmootherName

private

Definition at line 87 of file MuonTrackLoader.h.

Referenced by MuonTrackLoader().

bool MuonTrackLoader::theSmoothingStep

private

Definition at line 86 of file MuonTrackLoader.h.

Referenced by MuonTrackLoader().

bool MuonTrackLoader::theSmoothTkTrackFlag

private

Definition at line 95 of file MuonTrackLoader.h.

Referenced by loadTracks(), and MuonTrackLoader().

bool MuonTrackLoader::theTrajectoryFlag

private

Definition at line 84 of file MuonTrackLoader.h.

Referenced by MuonTrackLoader().

bool MuonTrackLoader::theUpdatingAtVtx

private

Definition at line 81 of file MuonTrackLoader.h.

Referenced by MuonTrackLoader().

MuonUpdatorAtVertex* MuonTrackLoader::theUpdatorAtVtx

private

Definition at line 82 of file MuonTrackLoader.h.

Referenced by buildTrackAtPCA(), buildTrackUpdatedAtPCA(), MuonTrackLoader(), and ~MuonTrackLoader().