#include <ConversionSeedFinder.h>

Inheritance diagram for ConversionSeedFinder:

Public Member Functions
void	clear ()
	ConversionSeedFinder (const edm::ParameterSet &config)
	ConversionSeedFinder ()
const MeasurementTracker *	getMeasurementTracker () const
std::vector< const DetLayer * > const &	layerList () const
virtual void	makeSeeds (const edm::Handle< edm::View< reco::CaloCluster > > &allBc) const =0
TrajectorySeedCollection &	seeds ()
virtual void	setCandidate (float e, GlobalPoint pos) const
void	setEvent (const edm::Event &e)
void	setEventSetup (const edm::EventSetup &es)
	Initialize EventSetup objects at each event.
void	setMeasurementTracker (const MeasurementTracker *tracker) const
virtual	~ConversionSeedFinder ()
Protected Member Functions
void	findLayers () const
void	findLayers (const FreeTrajectoryState &fts) const
void	printLayer (int i) const
FreeTrajectoryState	trackStateFromClusters (int aCharge, const GlobalPoint &gpOrigine, PropagationDirection dir, float scaleFactor) const
Protected Attributes
edm::ParameterSet	conf_
PropagationDirection	dir_
float	theBCEnergy_
GlobalPoint	theBCPosition_
reco::BeamSpot	theBeamSpot_
edm::ESHandle < GeometricSearchTracker >	theGeomSearchTracker_
std::vector< const DetLayer * >	theLayerList_
const MeasurementTracker *	theMeasurementTracker_
edm::ESHandle< MagneticField >	theMF_
const Propagator *	thePropagatorAlongMomentum_
const Propagator *	thePropagatorOppositeToMomentum_
reco::CaloCluster *	theSC_
float	theSCenergy_
GlobalPoint	theSCPosition_
TrajectorySeedCollection	theSeeds_
const TrackingGeometry *	theTrackerGeom_
KFUpdator	theUpdator_

Detailed Description

Id:: ConversionSeedFinder.h,v 1.12 2010/12/11 09:48:47 innocent Exp

Date:: 2010/12/11 09:48:47

Revision:: 1.12

Author:: Nancy Marinelli, U. of Notre Dame, US

Definition at line 50 of file ConversionSeedFinder.h.

Constructor & Destructor Documentation

ConversionSeedFinder::ConversionSeedFinder ( )

ConversionSeedFinder::ConversionSeedFinder ( const edm::ParameterSet & config )

Definition at line 18 of file ConversionSeedFinder.cc.

References LogDebug.

                                                                        : 
  conf_(config),
  theUpdator_()
{

  LogDebug("ConversionSeedFinder")  << " CTOR " << "\n";


}

virtual ConversionSeedFinder::~ConversionSeedFinder ( ) [inline, virtual]

Definition at line 58 of file ConversionSeedFinder.h.

{}

Member Function Documentation

void ConversionSeedFinder::clear ( void ) [inline]

Definition at line 77 of file ConversionSeedFinder.h.

References theSeeds_.

Referenced by ConversionTrackCandidateProducer::produce().

               {
    theSeeds_.clear();
  }

void ConversionSeedFinder::findLayers ( ) const [protected]

Definition at line 68 of file ConversionSeedFinder.cc.

References alongMomentum, DeDxDiscriminatorTools::charge(), reco::BeamSpot::position(), theBeamSpot_, and trackStateFromClusters().

Referenced by InOutConversionSeedFinder::makeSeeds(), and OutInConversionSeedFinder::makeSeeds().

                                            {
  

  int charge;
  //List the DetLayers crossed by a straight line from the centre of the 
  //detector to the supercluster position
  //  GlobalPoint  vertex(0.,0.,0.);
  GlobalPoint  vertex(theBeamSpot_.position().x(),theBeamSpot_.position().y(),theBeamSpot_.position().z()); 
  charge=-1;  
  FreeTrajectoryState theStraightLineFTS = trackStateFromClusters(charge, vertex, alongMomentum, 1.);
  
  findLayers( theStraightLineFTS  );
  
  
}

void ConversionSeedFinder::findLayers ( const FreeTrajectoryState & fts ) const [protected]

Definition at line 127 of file ConversionSeedFinder.cc.

References LayerCollector::allLayers(), alongMomentum, getMeasurementTracker(), i, printLayer(), theLayerList_, and theMF_.

                                                                            {



  theLayerList_.clear();


  StraightLinePropagator prop( &(*theMF_), alongMomentum);

  StartingLayerFinder starter(&prop, this->getMeasurementTracker() );
 
  LayerCollector collector(&prop, &starter, 5., 5.);

  theLayerList_ = collector.allLayers(traj);

  
  for(unsigned int i = 0; i < theLayerList_.size(); ++i) {
    printLayer(i);
  }
  

}

const MeasurementTracker* ConversionSeedFinder::getMeasurementTracker ( ) const [inline]

Definition at line 71 of file ConversionSeedFinder.h.

References theMeasurementTracker_.

Referenced by InOutConversionSeedFinder::completeSeed(), OutInConversionSeedFinder::completeSeed(), findLayers(), InOutConversionSeedFinder::findSeeds(), setEvent(), and OutInConversionSeedFinder::startSeed().

{return  theMeasurementTracker_;}

std::vector<const DetLayer*> const& ConversionSeedFinder::layerList ( ) const [inline]

Definition at line 67 of file ConversionSeedFinder.h.

References theLayerList_.

Referenced by InOutConversionSeedFinder::completeSeed(), InOutConversionSeedFinder::fillClusterSeeds(), InOutConversionSeedFinder::findSeeds(), and OutInConversionSeedFinder::startSeed().

{ return theLayerList_;}

virtual void ConversionSeedFinder::makeSeeds ( const edm::Handle< edm::View< reco::CaloCluster > > & allBc ) const [pure virtual]

Implemented in InOutConversionSeedFinder, and OutInConversionSeedFinder.

void ConversionSeedFinder::printLayer ( int i ) const [protected]

Definition at line 151 of file ConversionSeedFinder.cc.

References Reference_intrackfit_cff::barrel, i, DetLayer::location(), and theLayerList_.

Referenced by InOutConversionSeedFinder::completeSeed(), InOutConversionSeedFinder::fillClusterSeeds(), and findLayers().

                                                 {
  const DetLayer * layer = theLayerList_[i];
  if (layer->location() == GeomDetEnumerators::barrel ) {
    //    const BarrelDetLayer * barrelLayer = dynamic_cast<const BarrelDetLayer*>(layer);
    //float r = barrelLayer->specificSurface().radius();
    //    std::cout   <<  " barrel layer radius " << r << " " << barrelLayer->specificSurface().bounds().length()/2. << "\n";

  } else {
    //    const ForwardDetLayer * forwardLayer = dynamic_cast<const ForwardDetLayer*>(layer);
    // float z =  fabs(forwardLayer->surface().position().z());
    //    std::cout   << " forward layer position " << z << " " << forwardLayer->specificSurface().innerRadius() << " " << forwardLayer->specificSurface().outerRadius() << "\n";
  }
}

TrajectorySeedCollection& ConversionSeedFinder::seeds ( ) [inline]

Definition at line 65 of file ConversionSeedFinder.h.

References theSeeds_.

Referenced by ConversionTrackCandidateProducer::buildCollections().

{  return theSeeds_;}

virtual void ConversionSeedFinder::setCandidate	(	float	e,
		GlobalPoint	pos
	)		const `[inline, virtual]`

Definition at line 66 of file ConversionSeedFinder.h.

References pos, theSCenergy_, and theSCPosition_.

Referenced by ConversionTrackCandidateProducer::buildCollections().

{  theSCenergy_=e; theSCPosition_= pos; }

void ConversionSeedFinder::setEvent ( const edm::Event & e )

Definition at line 30 of file ConversionSeedFinder.cc.

References MeasurementTracker::geomTracker(), edm::Event::getByLabel(), getMeasurementTracker(), theBeamSpot_, theMeasurementTracker_, theTrackerGeom_, and MeasurementTracker::update().

Referenced by ConversionTrackCandidateProducer::produce().

                                                          {
 
  theMeasurementTracker_->update(evt);
  theTrackerGeom_= this->getMeasurementTracker()->geomTracker();

  //get the BeamSpot
  edm::Handle<reco::BeamSpot> recoBeamSpotHandle;
  evt.getByLabel("offlineBeamSpot",recoBeamSpotHandle);
  theBeamSpot_ = *recoBeamSpotHandle;



}

void ConversionSeedFinder::setEventSetup ( const edm::EventSetup & es )

Initialize EventSetup objects at each event.

Definition at line 44 of file ConversionSeedFinder.cc.

References edm::EventSetup::get(), edm::ESHandle< T >::product(), theGeomSearchTracker_, theMeasurementTracker_, theMF_, thePropagatorAlongMomentum_, and thePropagatorOppositeToMomentum_.

Referenced by ConversionTrackCandidateProducer::setEventSetup().

                                                                   {
  es.get<TrackerRecoGeometryRecord>().get( theGeomSearchTracker_);
  es.get<IdealMagneticFieldRecord>().get( theMF_ );


  edm::ESHandle<MeasurementTracker> measurementTrackerHandle;
  es.get<CkfComponentsRecord>().get(measurementTrackerHandle);
  theMeasurementTracker_ = measurementTrackerHandle.product();
  
  edm::ESHandle<Propagator>  propagatorAlongMomHandle;
  es.get<TrackingComponentsRecord>().get("alongMomElePropagator",propagatorAlongMomHandle);
  thePropagatorAlongMomentum_ = &(*propagatorAlongMomHandle);
 

  edm::ESHandle<Propagator>  propagatorOppoToMomHandle;
  es.get<TrackingComponentsRecord>().get("oppositeToMomElePropagator",propagatorOppoToMomHandle);
  thePropagatorOppositeToMomentum_ = &(*propagatorOppoToMomHandle);




}

void ConversionSeedFinder::setMeasurementTracker ( const MeasurementTracker * tracker ) const [inline]

Definition at line 70 of file ConversionSeedFinder.h.

{ ; }

FreeTrajectoryState ConversionSeedFinder::trackStateFromClusters	(	int	aCharge,
		const GlobalPoint &	gpOrigine,
		PropagationDirection	dir,
		float	scaleFactor
	)		const `[protected]`

Definition at line 84 of file ConversionSeedFinder.cc.

References alongMomentum, m, PV3DBase< T, PVType, FrameType >::perp(), mathSSE::sqrt(), theMF_, theSCenergy_, theSCPosition_, PV3DBase< T, PVType, FrameType >::theta(), Vector3DBase< T, FrameTag >::unit(), and PV3DBase< T, PVType, FrameType >::z().

Referenced by findLayers(), and OutInConversionSeedFinder::startSeed().

                                                                                                                     {
  
  

  double caloEnergy = theSCenergy_ * scaleFactor ;
  
  GlobalVector radiusCalo = theSCPosition_ - theOrigin ;
  
  GlobalVector momentumWithoutCurvature = radiusCalo.unit() * caloEnergy;
  
  
  GlobalTrajectoryParameters gtp;
  if(dir == alongMomentum) {
    gtp = GlobalTrajectoryParameters(theOrigin, momentumWithoutCurvature, charge, &(*theMF_) ) ;
  } else {
    gtp = GlobalTrajectoryParameters(theSCPosition_, momentumWithoutCurvature, charge, &(*theMF_) ) ;
  }



  
  // now create error matrix
  // dpos = 4mm/sqrt(E), dtheta = move vertex by 1sigma
  float dpos = 0.4/sqrt(theSCenergy_);
  dpos *= 2.;
  float dphi = dpos/theSCPosition_.perp();
  //  float dp = 0.03 * sqrt(theCaloEnergy);
  //  float dp = theCaloEnergy / sqrt(12.); // for fun
  float theta1 = theSCPosition_.theta();
  float theta2 = atan2(double(theSCPosition_.perp()), theSCPosition_.z()-5.5);
  float dtheta = theta1 - theta2;
  AlgebraicSymMatrix  m(5,1) ;
  m[0][0] = 1.; m[1][1] = dpos*dpos ; m[2][2] = dpos*dpos ;
  m[3][3] = dphi*dphi ; m[4][4] = dtheta * dtheta ;

  FreeTrajectoryState fts(gtp, CurvilinearTrajectoryError(m)) ;

  return fts ;


}