CMS 3D CMS Logo

Public Member Functions | Private Attributes

MuonSegmentMatcher Class Reference

#include <MuonSegmentMatcher.h>

List of all members.

Public Member Functions

std::vector< const CSCSegment * > matchCSC (const reco::Track &muon, const edm::Event &event)
std::vector< const
DTRecSegment4D * > 
matchDT (const reco::Track &muon, const edm::Event &event)
 perform the matching
 MuonSegmentMatcher (const edm::ParameterSet &, MuonServiceProxy *)
 constructor with Parameter Set and MuonServiceProxy
virtual ~MuonSegmentMatcher ()
 destructor

Private Attributes

edm::InputTag CSCSegmentTags_
bool cscTightMatch
double dtRadius_
edm::InputTag DTSegmentTags_
bool dtTightMatch
const edm::EventtheEvent
const MuonServiceProxytheService
edm::InputTag TKtrackTags_
edm::InputTag trackTags_

Detailed Description

Definition at line 22 of file MuonSegmentMatcher.h.


Constructor & Destructor Documentation

MuonSegmentMatcher::MuonSegmentMatcher ( const edm::ParameterSet matchParameters,
MuonServiceProxy *  service 
)

constructor with Parameter Set and MuonServiceProxy

Definition at line 46 of file MuonSegmentMatcher.cc.

  :
  theService(service),
  DTSegmentTags_(matchParameters.getParameter<edm::InputTag>("DTsegments")),
  CSCSegmentTags_(matchParameters.getParameter<edm::InputTag>("CSCsegments")),
  dtRadius_(matchParameters.getParameter<double>("DTradius")),
  dtTightMatch(matchParameters.getParameter<bool>("TightMatchDT")),
  cscTightMatch(matchParameters.getParameter<bool>("TightMatchCSC"))
{
}
MuonSegmentMatcher::~MuonSegmentMatcher ( ) [virtual]

destructor

Definition at line 57 of file MuonSegmentMatcher.cc.

{
}

Member Function Documentation

vector< const CSCSegment * > MuonSegmentMatcher::matchCSC ( const reco::Track muon,
const edm::Event event 
)

Definition at line 206 of file MuonSegmentMatcher.cc.

References CSCDetId::chamber(), CSC(), CSCSegmentTags_, cscTightMatch, CSCDetId::endcap(), DetId::Muon, reco::Track::recHitsBegin(), reco::Track::recHitsEnd(), CSCDetId::ring(), CSCDetId::station(), PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().

Referenced by CSCTimingExtractor::fillTiming().

{

  using namespace edm;

  edm::Handle<CSCSegmentCollection> allSegmentsCSC;
  event.getByLabel(CSCSegmentTags_, allSegmentsCSC);

  vector<const CSCSegment*> pointerToCSCSegments;

  double matchRatioCSC=0;
  int numCSC = 0;
  double CSCXCut = 0.001;
  double CSCYCut = 0.001;
  double countMuonCSCHits = 0;

  for(CSCSegmentCollection::const_iterator segmentCSC = allSegmentsCSC->begin(); segmentCSC != allSegmentsCSC->end(); segmentCSC++) {
    double CSCcountAgreeingHits=0;

    if ( !segmentCSC->isValid()) continue; 

    numCSC++;
    const vector<CSCRecHit2D>& CSCRechits2D = segmentCSC->specificRecHits();
    countMuonCSCHits = 0;
    CSCDetId myChamber((*segmentCSC).geographicalId().rawId());

    for(trackingRecHit_iterator hitC = muon.recHitsBegin(); hitC != muon.recHitsEnd(); ++hitC) {
      if (!(*hitC)->isValid()) continue; 
      if ( (*hitC)->geographicalId().det() != DetId::Muon ) continue; 
      if ( (*hitC)->geographicalId().subdetId() != MuonSubdetId::CSC ) continue;
      if (!(*hitC)->isValid()) continue;

      //DETECTOR CONSTRUCTION
      DetId id = (*hitC)->geographicalId();
      CSCDetId cscDetIdHit(id.rawId());

      if(!(cscDetIdHit.ring()==myChamber.ring())) continue;
      if(!(cscDetIdHit.station()==myChamber.station())) continue;
      if(!(cscDetIdHit.endcap()==myChamber.endcap())) continue;
      if(!(cscDetIdHit.chamber()==myChamber.chamber())) continue;

      countMuonCSCHits++;

      LocalPoint positionLocalCSC = (*hitC)->localPosition();
        
      for (vector<CSCRecHit2D>::const_iterator hiti=CSCRechits2D.begin(); hiti!=CSCRechits2D.end(); hiti++) {

        if ( !hiti->isValid()) continue; 
        CSCDetId cscDetId((hiti->geographicalId()).rawId());
                
        if ((*hitC)->geographicalId().rawId()!=(hiti->geographicalId()).rawId()) continue;

        LocalPoint segLocalCSC = hiti->localPosition();
        //              cout<<"Layer Id (MuonHit) =  "<<cscDetIdHit<<" Muon Local Position (det frame) "<<positionLocalCSC <<endl;
        //              cout<<"Layer Id  (CSCHit) =  "<<cscDetId<<"  Hit Local Position (det frame) "<<segLocalCSC <<endl;
        if((fabs(positionLocalCSC.x()-segLocalCSC.x())<CSCXCut) && 
           (fabs(positionLocalCSC.y()-segLocalCSC.y())<CSCYCut)) {
          CSCcountAgreeingHits++;
          //              cout << "   Matched." << endl;
        }  
      }//End 2D rechit iteration
    }//End muon hit iteration
    
    matchRatioCSC = countMuonCSCHits == 0 ? 0 : CSCcountAgreeingHits/countMuonCSCHits;
                
    if ((matchRatioCSC>0.9) && ((countMuonCSCHits>1) || !cscTightMatch)) pointerToCSCSegments.push_back(&(*segmentCSC));

  } //End CSC Segment Iteration 

  return pointerToCSCSegments;

}
vector< const DTRecSegment4D * > MuonSegmentMatcher::matchDT ( const reco::Track muon,
const edm::Event event 
)

perform the matching

Definition at line 62 of file MuonSegmentMatcher.cc.

References GeomDetEnumerators::DT, dtRadius_, DTSegmentTags_, dtTightMatch, TrackingRecHit::geographicalId(), DetId::Muon, edm::RefVector< C, T, F >::push_back(), DetId::rawId(), DTRecSegment2D::recHits(), reco::Track::recHitsBegin(), reco::Track::recHitsEnd(), DTRecSegment2D::specificRecHits(), PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().

Referenced by DTTimingExtractor::fillTiming().

{
  using namespace edm;

  edm::Handle<DTRecSegment4DCollection> dtRecHits;
  event.getByLabel(DTSegmentTags_, dtRecHits);  
  
  vector<const DTRecSegment4D*> pointerTo4DSegments;

  TrackingRecHitRefVector dtHits;

  // Loop and select DT recHits
  for(trackingRecHit_iterator hit = muon.recHitsBegin(); hit != muon.recHitsEnd(); ++hit) {
    if ( !(*hit)->isValid()) continue; 
    if ( (*hit)->geographicalId().det() != DetId::Muon ) continue; 
    if ( (*hit)->geographicalId().subdetId() != MuonSubdetId::DT ) continue; 
    if (!(*hit)->isValid()) continue; 
    dtHits.push_back(*hit);
  }
  
  double PhiCutParameter=dtRadius_;
  double ZCutParameter=dtRadius_;
  double matchRatioZ=0;
  double matchRatioPhi=0;

  for (DTRecSegment4DCollection::const_iterator rechit = dtRecHits->begin(); rechit!=dtRecHits->end();++rechit) {
  
    if ( !rechit->isValid()) continue; 

    double nhitsPhi = 0;
    double nhitsZ = 0;
          
    if(rechit->hasZed()) {
      double countMuonDTHits = 0;
      double countAgreeingHits=0;

      const DTRecSegment2D* segmZ;
      segmZ = dynamic_cast<const DTRecSegment2D*>(rechit->zSegment());
      nhitsZ = segmZ->recHits().size(); 
                
      const vector<DTRecHit1D> hits1d = segmZ->specificRecHits();
      DTChamberId chamberSegIdT((segmZ->geographicalId()).rawId());
                
      // Loop over muon recHits
      for(trackingRecHit_iterator hit = dtHits.begin(); hit != dtHits.end(); ++hit) {

        if ( !(*hit)->isValid()) continue; 
        
        DetId idT = (*hit)->geographicalId();
        DTChamberId dtDetIdHitT(idT.rawId());
        DTSuperLayerId dtDetLayerIdHitT(idT.rawId());

        LocalPoint  pointLocal = (*hit)->localPosition();
                                        
        if ((chamberSegIdT==dtDetIdHitT) && (dtDetLayerIdHitT.superlayer()==2)) countMuonDTHits++;

        for (vector<DTRecHit1D>::const_iterator hiti=hits1d.begin(); hiti!=hits1d.end(); hiti++) {

          if ( !hiti->isValid()) continue; 

          // Pick the one in the same DT Layer as the 1D hit
          if(!(hiti->geographicalId().rawId()==idT.rawId())) continue; 

          // and compare the local positions
          LocalPoint segLocal = hiti->localPosition();
//        cout << "Zed Segment Point = "<<pointLocal<<"    Muon Point = "<<segLocal<<"  Dist:  "
//             << (fabs(pointLocal.x()-segLocal.x()))+(fabs(pointLocal.y()-segLocal.y()))<< endl;
          if ((fabs(pointLocal.x()-segLocal.x())<ZCutParameter) && 
              (fabs(pointLocal.y()-segLocal.y())<ZCutParameter)) 
            countAgreeingHits++;
        } //End Segment Hit Iteration
      } //End Muon Hit Iteration
                
      matchRatioZ = countMuonDTHits == 0 ? 0 : countAgreeingHits/countMuonDTHits;
    } //End HasZed Check
                        
    if(rechit->hasPhi()) {
      double countMuonDTHits = 0;
      double countAgreeingHits=0;

      //PREPARE PARAMETERS FOR SEGMENT DETECTOR GEOMETRY
      const DTRecSegment2D* segmPhi;
      segmPhi = dynamic_cast<const DTRecSegment2D*>(rechit->phiSegment());
      nhitsPhi = segmPhi->recHits().size();
                
      const vector<DTRecHit1D> hits1d = segmPhi->specificRecHits();
      DTChamberId chamberSegIdT((segmPhi->geographicalId()).rawId());
                
      // Loop over muon recHits
      for(trackingRecHit_iterator hit = dtHits.begin(); hit != dtHits.end(); ++hit) {

        if ( !(*hit)->isValid()) continue; 

        DetId idT = (*hit)->geographicalId();
        DTChamberId dtDetIdHitT(idT.rawId());
        DTSuperLayerId dtDetLayerIdHitT(idT.rawId());

        LocalPoint pointLocal = (*hit)->localPosition(); //Localposition is in DTLayer https://cmslxr.fnal.gov/lxr/source/DataFormats/DTRecHit/interface/DTRecHit1D.h

        if ((chamberSegIdT==dtDetIdHitT)&&((dtDetLayerIdHitT.superlayer()==1)||(dtDetLayerIdHitT.superlayer()==3))) 
          countMuonDTHits++;

        for (vector<DTRecHit1D>::const_iterator hiti=hits1d.begin(); hiti!=hits1d.end(); hiti++) {

          if ( !hiti->isValid()) continue; 

          // Pick the one in the same DT Layer as the 1D hit
          if(!(hiti->geographicalId().rawId()==idT.rawId())) continue; 
                                         
          // and compare the local positions
          LocalPoint segLocal = hiti->localPosition();
//        cout << "     Phi Segment Point = "<<pointLocal<<"    Muon Point = "<<segLocal<<"  Dist:   " 
//             << (fabs(pointLocal.x()-segLocal.x()))+(fabs(pointLocal.y()-segLocal.y()))<< endl;

          if ((fabs(pointLocal.x()-segLocal.x())<PhiCutParameter) && 
              (fabs(pointLocal.y()-segLocal.y())<PhiCutParameter))
            countAgreeingHits++; 
        } // End Segment Hit Iteration
      } // End Muon Hit Iteration

      matchRatioPhi = countMuonDTHits != 0 ? countAgreeingHits/countMuonDTHits : 0;
    } // End HasPhi Check

//    DTChamberId chamberSegId2((rechit->geographicalId()).rawId());
    
    if (dtTightMatch && nhitsPhi && nhitsZ) {
      if((matchRatioPhi>0.9)&&(matchRatioZ>0.9)) {
//      cout<<"Making a tight match in Chamber "<<chamberSegId2<<endl;
        pointerTo4DSegments.push_back(&(*rechit));
      }
    } else {
      if((matchRatioPhi>0.9 && nhitsPhi)||(matchRatioZ>0.9 && nhitsZ)) {
//      cout<<"Making a loose match in Chamber "<<chamberSegId2<<endl;
        pointerTo4DSegments.push_back(&(*rechit));
      }
    }
    
  } //End DT Segment Iteration

  return pointerTo4DSegments;
}

Member Data Documentation

Definition at line 46 of file MuonSegmentMatcher.h.

Referenced by matchCSC().

Definition at line 50 of file MuonSegmentMatcher.h.

Referenced by matchCSC().

Definition at line 47 of file MuonSegmentMatcher.h.

Referenced by matchDT().

Definition at line 45 of file MuonSegmentMatcher.h.

Referenced by matchDT().

Definition at line 49 of file MuonSegmentMatcher.h.

Referenced by matchDT().

Definition at line 41 of file MuonSegmentMatcher.h.

Definition at line 40 of file MuonSegmentMatcher.h.

Definition at line 43 of file MuonSegmentMatcher.h.

Definition at line 44 of file MuonSegmentMatcher.h.