#include <DynamicTruncation.h>

Public Types
typedef TransientTrackingRecHit::ConstRecHitContainer	ConstRecHitContainer
typedef TransientTrackingRecHit::ConstRecHitPointer	ConstRecHitPointer
Public Member Functions
	DynamicTruncation (const edm::Event &, const MuonServiceProxy &)
TransientTrackingRecHit::ConstRecHitContainer	filter (const Trajectory &)
std::vector< double >	getEstimators ()
void	setThr (int, int)
	~DynamicTruncation ()
Private Member Functions
void	compatibleDets (TrajectoryStateOnSurface &, std::map< int, std::vector< DetId > > &)
void	filteringAlgo (std::map< int, std::vector< DetId > > &)
double	getBest (std::vector< DTRecSegment4D > &, TrajectoryStateOnSurface &, DTRecSegment4D &)
double	getBest (std::vector< CSCSegment > &, TrajectoryStateOnSurface &, CSCSegment &)
ConstRecHitContainer	sort (ConstRecHitContainer &)
void	update (TrajectoryStateOnSurface &, ConstRecHitPointer)
void	updateWithCSChits (ConstRecHitContainer &)
void	updateWithDThits (ConstRecHitContainer &)
Private Attributes
std::map< CSCDetId, GlobalError >	cscApeMap
edm::ESHandle< CSCGeometry >	cscGeom
int	CSCThr
TrajectoryStateOnSurface	currentState
std::map< DTChamberId, GlobalError >	dtApeMap
int	DTThr
std::vector< double >	estimators
edm::ESHandle< MagneticField >	magfield
DirectMuonNavigation *	navigation
edm::ESHandle < MuonDetLayerGeometry >	navMuon
edm::ESHandle< Propagator >	propagator
edm::ESHandle< Propagator >	propagatorCompatibleDet
ConstRecHitContainer	result
const edm::Event *	theEvent
edm::ESHandle < GlobalTrackingGeometry >	theG
edm::ESHandle < TransientTrackingRecHitBuilder >	theMuonRecHitBuilder
const edm::EventSetup *	theSetup
edm::ESHandle < TrajectoryStateUpdator >	updatorHandle

Detailed Description

Class: DynamicTruncation

Description: class for the dynamical stop of the KF according to the compatibility degree between the extrapolated track state and the reconstructed segment in the muon chambers

Date:: 2011/11/29 07:50:36

Revision:: 1.6

Authors : D. Pagano & G. Bruno - UCL Louvain

Definition at line 47 of file DynamicTruncation.h.

Member Typedef Documentation

typedef TransientTrackingRecHit::ConstRecHitContainer DynamicTruncation::ConstRecHitContainer

Definition at line 52 of file DynamicTruncation.h.

typedef TransientTrackingRecHit::ConstRecHitPointer DynamicTruncation::ConstRecHitPointer

Definition at line 51 of file DynamicTruncation.h.

Constructor & Destructor Documentation

DynamicTruncation::DynamicTruncation	(	const edm::Event &	event,
		const MuonServiceProxy &	theService
	)

Definition at line 52 of file DynamicTruncation.cc.

References cscGeom, event(), magfield, navigation, navMuon, propagator, propagatorCompatibleDet, theEvent, theG, theMuonRecHitBuilder, theSetup, and updatorHandle.

                                                                                             :
  DTThr(0), CSCThr(0) 
{
  theEvent = &event;
  theSetup = &theService.eventSetup();
  propagator = theService.propagator("SmartPropagator");
  propagatorCompatibleDet = theService.propagator("SteppingHelixPropagatorAny");
  theG = theService.trackingGeometry();
  theService.eventSetup().get<TransientRecHitRecord>().get("MuonRecHitBuilder",theMuonRecHitBuilder);
  theService.eventSetup().get<TrackingComponentsRecord>().get("KFUpdator",updatorHandle);
  theService.eventSetup().get<MuonGeometryRecord>().get(cscGeom);
  theService.eventSetup().get<MuonRecoGeometryRecord>().get(navMuon);
  theService.eventSetup().get<IdealMagneticFieldRecord>().get(magfield);
  navigation = new DirectMuonNavigation(theService.detLayerGeometry());
}

DynamicTruncation::~DynamicTruncation ( )

Definition at line 70 of file DynamicTruncation.cc.

References navigation.

                                      {
  if (navigation) delete navigation;
}

Member Function Documentation

void DynamicTruncation::compatibleDets	(	TrajectoryStateOnSurface &	,
		std::map< int, std::vector< DetId > > &
	)		`[private]`

Referenced by filter().

TransientTrackingRecHit::ConstRecHitContainer DynamicTruncation::filter ( const Trajectory & traj )

Definition at line 76 of file DynamicTruncation.cc.

References compatibleDets(), cscApeMap, currentState, DetId::det(), dtApeMap, error, filteringAlgo(), TrajectoryMeasurement::forwardPredictedState(), TrackingRecHit::geographicalId(), edm::EventSetup::get(), TrajectoryStateOnSurface::globalPosition(), PV3DBase< T, PVType, FrameType >::mag(), Trajectory::measurements(), TrajectoryMeasurement::recHit(), result, theSetup, align::Tracker, and update().

Referenced by GlobalMuonRefitter::refit().

                                                                                            {
  result.clear();

  // Fill the map with the APE chamber by chamber (DT)
  // IT ALSO WORKS IF APE IS 0
  edm::ESHandle<AlignmentErrors> dtAlignmentErrors;
  theSetup->get<DTAlignmentErrorRcd>().get( dtAlignmentErrors );
  for ( std::vector<AlignTransformError>::const_iterator it = dtAlignmentErrors->m_alignError.begin();
        it != dtAlignmentErrors->m_alignError.end(); it++ ) {
    CLHEP::HepSymMatrix error = (*it).matrix();
    GlobalError glbErr(error[0][0], error[1][0], error[1][1], error[2][0], error[2][1], error[2][2]);
    DTChamberId DTid((*it).rawId());    
    dtApeMap.insert( pair<DTChamberId, GlobalError> (DTid, glbErr) ); 
  }
  
  // Fill the map with the APE chamber by chamber (CSC)
  // IT ALSO WORKS IF APE IS 0
  edm::ESHandle<AlignmentErrors> cscAlignmentErrors;
  theSetup->get<CSCAlignmentErrorRcd>().get( cscAlignmentErrors );
  for ( std::vector<AlignTransformError>::const_iterator it = cscAlignmentErrors->m_alignError.begin();
        it != cscAlignmentErrors->m_alignError.end(); it++ ) {
    CLHEP::HepSymMatrix error = (*it).matrix();
    GlobalError glbErr(error[0][0], error[1][0], error[1][1], error[2][0], error[2][1], error[2][2]);
    CSCDetId CSCid((*it).rawId());
    cscApeMap.insert( pair<CSCDetId, GlobalError> (CSCid, glbErr) );
  }

  // Put the tracker hits in the final vector and get the last tracker valid measure
  std::vector<TrajectoryMeasurement> muonMeasurements = traj.measurements();
  TrajectoryMeasurement lastTKm = muonMeasurements.front();
  for (std::vector<TrajectoryMeasurement>::const_iterator imT = muonMeasurements.begin(); imT != muonMeasurements.end(); imT++ ) {
    if ( !(*imT).recHit()->isValid() ) continue;
    const TransientTrackingRecHit* hit = &(*(*imT).recHit());
    if (hit->geographicalId().det() == DetId::Tracker) {
      result.push_back((*imT).recHit());
      if (!(*imT).forwardPredictedState().isValid()) continue;
      if ((*imT).forwardPredictedState().globalPosition().mag() 
          > lastTKm.forwardPredictedState().globalPosition().mag()) lastTKm = *imT;
    }
  }

  // get the last (forward) predicted state for the tracker
  currentState = lastTKm.forwardPredictedState();
  
  // update the state with the last tracker measure
  update(currentState, lastTKm.recHit());

  // use the navigation to get the list of compatible dets
  map<int, std::vector<DetId> > detMap;
  compatibleDets(currentState, detMap);
  
  // selects the muon hits for the final refit
  filteringAlgo(detMap);
  
  return result;
}

void DynamicTruncation::filteringAlgo ( std::map< int, std::vector< DetId > > & ) [private]

Definition at line 208 of file DynamicTruncation.cc.

References CSC(), CSCThr, currentState, GeomDetEnumerators::DT, MuonSubdetId::DT, DTThr, estimators, getBest(), ChamberSegmentUtility::getCSClist(), ChamberSegmentUtility::getCSCRHmap(), ChamberSegmentUtility::getDTlist(), ChamberSegmentUtility::getDTRHmap(), TrajectoryStateOnSurface::isValid(), j, MAX_THR, DetId::Muon, propagator, result, sort(), DTChamberId::station(), CSCDetId::station(), theEvent, theG, theMuonRecHitBuilder, theSetup, updateWithCSChits(), and updateWithDThits().

Referenced by filter().

                                                                         {
  ChamberSegmentUtility getSegs(*theEvent, *theSetup);
  for (unsigned int iDet = 0; iDet < detMap.size(); ++iDet) {
    double bestLayerValue = MAX_THR;
    bool isDTorCSC = false;
    ConstRecHitContainer layerRH;
    std::vector<DetId> chamber = detMap[iDet];
    for (unsigned int j = 0; j < chamber.size(); ++j) {
      DetId id = chamber[j];
      
      if (id.det() == DetId::Muon && id.subdetId() == MuonSubdetId::DT) {
        isDTorCSC = true;
        
        DTChamberId DTid(id);

        std::vector<DTRecSegment4D> allDTsegs;
        std::map<int, std::vector<DTRecSegment4D> >::const_iterator dtIter = getSegs.getDTlist().find(DTid.station());
        if (dtIter != getSegs.getDTlist().end()){
          allDTsegs = dtIter->second;
        }
        std::vector<DTRecSegment4D>::size_type sz = allDTsegs.size();
        for (unsigned int iSeg=0; iSeg<sz; ++iSeg) {
          
          // Propagate the state to the current chamber
          TrajectoryStateOnSurface tsosdt = propagator->propagate(currentState, 
                                                                  theG->idToDet(allDTsegs[iSeg].chamberId())->surface());
          if (!tsosdt.isValid()) continue;

          std::vector<DTRecSegment4D> DTsegs;
          DTsegs.push_back(allDTsegs[iSeg]); 
          
          DTRecSegment4D bestDTSeg;
          double bestChamberValue = getBest(DTsegs, tsosdt, bestDTSeg);
          if (bestChamberValue < bestLayerValue) bestLayerValue = bestChamberValue;
          
          // Check if the best estimator value is below the THR and then get the RH componing the segment
          if (bestChamberValue >= DTThr || bestChamberValue > bestLayerValue) continue; 
          layerRH.clear();
          std::vector<DTRecHit1D> DTrh = getSegs.getDTRHmap(bestDTSeg);
          for (std::vector<DTRecHit1D>::iterator it = DTrh.begin(); it != DTrh.end(); it++) {
            layerRH.push_back(theMuonRecHitBuilder->build(&*it));
          }
        }
      }
      if (id.det() == DetId::Muon && id.subdetId() == MuonSubdetId::CSC) {
        isDTorCSC = true;
        CSCDetId CSCid(id);
        
        std::vector<CSCSegment> allCSCsegs;
        std::map<int, std::vector<CSCSegment> >::const_iterator cscIter = getSegs.getCSClist().find(CSCid.station()); 
        if (cscIter != getSegs.getCSClist().end()){
          allCSCsegs = cscIter->second;
        }
        
        std::vector<CSCSegment>::size_type sz = allCSCsegs.size();
        for (unsigned int iSeg=0; iSeg<sz; ++iSeg) {
          
          // Propagate the state to the current chamber
          TrajectoryStateOnSurface tsoscsc = propagator->propagate(currentState, 
                                                                   theG->idToDet(allCSCsegs[iSeg].cscDetId())->surface());
          if (!tsoscsc.isValid()) continue;
          
          std::vector<CSCSegment> CSCsegs;
          CSCsegs.push_back(allCSCsegs[iSeg]);
          
          CSCSegment bestCSCSeg;
          double bestChamberValue = getBest(CSCsegs, tsoscsc, bestCSCSeg);
          if (bestChamberValue < bestLayerValue) bestLayerValue = bestChamberValue;
          
          // Check if the best estimator value is below the THR and then get the RH componing the segment
          if (bestChamberValue >= CSCThr || bestChamberValue > bestLayerValue) continue;
          layerRH.clear();
          std::vector<CSCRecHit2D> CSCrh = getSegs.getCSCRHmap(bestCSCSeg);
          for (std::vector<CSCRecHit2D>::iterator it = CSCrh.begin(); it != CSCrh.end(); ++it) {
            layerRH.push_back(theMuonRecHitBuilder->build(&*it));
          }
        }
      }
    }

    if (isDTorCSC) {
      if (bestLayerValue < MAX_THR) estimators.push_back(bestLayerValue);
      else estimators.push_back(-1);
    }

    if (layerRH.size() > 0) {                                                                                                                                          
      for (ConstRecHitContainer::iterator it = layerRH.begin(); it != layerRH.end(); ++it) {                                                                         
        result.push_back((*it));                                                                                                                                         
      }                                                                                                                                                                
      
      // sort the vector                                                                                                                                             
      layerRH = sort(layerRH);                                                                                                                                         
      
      // update the currentState using all rh                                                                                                             
      DetId id = layerRH.front()->geographicalId();                                                                                                      
      if (id.subdetId() == MuonSubdetId::DT) updateWithDThits(layerRH);                                                                                 
      else updateWithCSChits(layerRH);                                                                                                                 
    }
    layerRH.clear();                                                                                                                                                    
  }
}

double DynamicTruncation::getBest	(	std::vector< CSCSegment > &	segs,
		TrajectoryStateOnSurface &	tsos,
		CSCSegment &	bestCSCSeg
	)		`[private]`

Definition at line 144 of file DynamicTruncation.cc.

References cscApeMap, i, MAX_THR, edm::second(), theG, tmp, ErrorFrameTransformer::transform(), and StateSegmentMatcher::value().

Referenced by filteringAlgo().

                                                                                                                     {
  unsigned int i = 0;
  double val = MAX_THR;
  std::vector<CSCSegment>::size_type sz = segs.size();
  for (i=0; i<sz; i++) {
    LocalError apeLoc; //default constructor is all zeroes, OK
    apeLoc = ErrorFrameTransformer().transform(cscApeMap.find(segs[i].cscDetId())->second, theG->idToDet(segs[i].cscDetId())->surface());
    StateSegmentMatcher estim(&tsos, &segs[i], &apeLoc);
    double tmp = estim.value();
    if (tmp < val) {
      bestCSCSeg = segs[i];
      val = tmp;
    }
  }
  return val;
}

double DynamicTruncation::getBest	(	std::vector< DTRecSegment4D > &	segs,
		TrajectoryStateOnSurface &	tsos,
		DTRecSegment4D &	bestDTSeg
	)		`[private]`

Definition at line 163 of file DynamicTruncation.cc.

References dtApeMap, i, MAX_THR, edm::second(), theG, tmp, ErrorFrameTransformer::transform(), and StateSegmentMatcher::value().

                                                                                                                            {
  unsigned int i = 0;
  double val = MAX_THR;
  std::vector<DTRecSegment4D>::size_type sz = segs.size();
  for (i=0; i<sz; i++) {
    LocalError apeLoc; //default constructor is all zeroes, OK
    apeLoc = ErrorFrameTransformer().transform(dtApeMap.find(segs[i].chamberId())->second, theG->idToDet(segs[i].chamberId())->surface());
    StateSegmentMatcher estim(&tsos, &segs[i], &apeLoc); 
    double tmp = estim.value();                                                                                                                                              
    if (tmp < val) {
      bestDTSeg = segs[i];
      val = tmp;
    }
  }
  return val;
}

std::vector<double> DynamicTruncation::getEstimators ( ) [inline]

Definition at line 65 of file DynamicTruncation.h.

References estimators.

{return estimators;};

void DynamicTruncation::setThr	(	int	bThr,
		int	eThr
	)

Definition at line 135 of file DynamicTruncation.cc.

References CSCThr, DTThr, and MAX_THR.

Referenced by GlobalMuonRefitter::refit().

                                                 {
  if (bThr <= MAX_THR && bThr >= 0) DTThr  = bThr; // DT thr 
  else DTThr = MAX_THR;
  if (eThr <= MAX_THR && eThr >= 0) CSCThr = eThr; // CSC thr
  else CSCThr = MAX_THR;
}

TransientTrackingRecHit::ConstRecHitContainer DynamicTruncation::sort ( ConstRecHitContainer & recHits ) [private]

Definition at line 340 of file DynamicTruncation.cc.

References i, j, mag(), n, and swap().

Referenced by filteringAlgo().

                                                                                                 {
  unsigned int i=0;
  unsigned int j=0;
  ConstRecHitContainer::size_type n = recHits.size();
  for(i=1; i<n; ++i)
    for(j=n-1; j>=i; --j)
      {
        if(recHits[j-1]->globalPosition().mag() > recHits[j]->globalPosition().mag())
          {
            swap (recHits[j-1],recHits[j]);
          }
      }
  return recHits;
}

void DynamicTruncation::update	(	TrajectoryStateOnSurface &	tsos,
		ConstRecHitPointer	rechit
	)		`[private]`

Definition at line 312 of file DynamicTruncation.cc.

References currentState, TrajectoryStateOnSurface::isValid(), groupFilesInBlocks::temp, and updatorHandle.

Referenced by filter().

                                                                                        {
  TrajectoryStateOnSurface temp = updatorHandle->update(tsos, *rechit);
  if (temp.isValid()) currentState = updatorHandle->update(tsos, *rechit);
}

void DynamicTruncation::updateWithCSChits ( ConstRecHitContainer & recHits ) [private]

Definition at line 329 of file DynamicTruncation.cc.

References cscGeom, currentState, GeomDet::geographicalId(), TrajectoryStateOnSurface::isValid(), propagator, groupFilesInBlocks::temp, theG, and updatorHandle.

Referenced by filteringAlgo().

                                                                       {
  for (ConstRecHitContainer::const_iterator it = recHits.begin(); it != recHits.end(); ++it) {
    const CSCLayer* cscChamber = cscGeom->layer((*it)->det()->geographicalId());
    CSCDetId layid = cscChamber->geographicalId();
    TrajectoryStateOnSurface temp = propagator->propagate(currentState, theG->idToDet(layid)->surface());
    if (temp.isValid()) currentState = updatorHandle->update(temp, **it);
  }
}

void DynamicTruncation::updateWithDThits ( ConstRecHitContainer & recHits ) [private]

Definition at line 319 of file DynamicTruncation.cc.

References currentState, propagator, groupFilesInBlocks::temp, theG, and updatorHandle.

Referenced by filteringAlgo().

                                                                      {
  for (ConstRecHitContainer::const_iterator it = recHits.begin(); it != recHits.end(); ++it) {
    DTLayerId layid((*it)->det()->geographicalId());
    TrajectoryStateOnSurface temp = propagator->propagate(currentState, theG->idToDet(layid)->surface());
    if (temp.isValid()) currentState = updatorHandle->update(temp, **it);
  }
}