#include <PhotonProducer.h>

Inheritance diagram for PhotonProducer:

Public Member Functions
virtual void	beginRun (edm::Run &r, edm::EventSetup const &es)
virtual void	endRun (edm::Run &, edm::EventSetup const &)
	PhotonProducer (const edm::ParameterSet &ps)
virtual void	produce (edm::Event &evt, const edm::EventSetup &es)
	~PhotonProducer ()
Private Member Functions
void	fillPhotonCollection (edm::Event &evt, edm::EventSetup const &es, const edm::Handle< reco::PhotonCoreCollection > &photonCoreHandle, const CaloTopology topology, const EcalRecHitCollection ecalBarrelHits, const EcalRecHitCollection *ecalEndcapHits, const edm::Handle< CaloTowerCollection > &hcalTowersHandle, math::XYZPoint &vtx, reco::PhotonCollection &outputCollection, int &iSC)
Private Attributes
edm::InputTag	barrelEcalHits_
edm::ParameterSet	conf_
std::string	conversionCollection_
std::string	conversionProducer_
edm::InputTag	endcapEcalHits_
EcalClusterFunctionBaseClass *	energyCorrectionF
edm::InputTag	hcalTowers_
double	highEt_
double	hOverEConeSize_
double	maxHOverE_
double	minR9Barrel_
double	minR9Endcap_
double	minSCEt_
std::string	PhotonCollection_
edm::InputTag	photonCoreProducer_
std::string	pixelSeedProducer_
PositionCalc	posCalculator_
std::vector< double >	preselCutValuesBarrel_
std::vector< double >	preselCutValuesEndcap_
edm::ESHandle< CaloGeometry >	theCaloGeom_
edm::ESHandle< CaloTopology >	theCaloTopo_
PhotonIsolationCalculator *	thePhotonIsolationCalculator_
bool	usePrimaryVertex_
bool	validConversions_
bool	validPixelSeeds_
std::string	vertexProducer_

Detailed Description

Id:: PhotonProducer.h,v 1.37 2010/02/22 19:38:18 nancy Exp

Date:: 2010/02/22 19:38:18

Revision:: 1.37

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

Definition at line 38 of file PhotonProducer.h.

Constructor & Destructor Documentation

PhotonProducer::PhotonProducer ( const edm::ParameterSet & ps )

Definition at line 29 of file PhotonProducer.cc.

References barrelEcalHits_, conf_, endcapEcalHits_, energyCorrectionF, reco::get(), edm::ParameterSet::getParameter(), hcalTowers_, highEt_, hOverEConeSize_, minR9Barrel_, minR9Endcap_, PhotonCollection_, photonCoreProducer_, posCalculator_, preselCutValuesBarrel_, preselCutValuesEndcap_, usePrimaryVertex_, and vertexProducer_.

                                                            : 
  conf_(config)
{

  // use onfiguration file to setup input/output collection names

  photonCoreProducer_   = conf_.getParameter<edm::InputTag>("photonCoreProducer");
  barrelEcalHits_   = conf_.getParameter<edm::InputTag>("barrelEcalHits");
  endcapEcalHits_   = conf_.getParameter<edm::InputTag>("endcapEcalHits");
  vertexProducer_   = conf_.getParameter<std::string>("primaryVertexProducer");
  hcalTowers_ = conf_.getParameter<edm::InputTag>("hcalTowers");
  hOverEConeSize_   = conf_.getParameter<double>("hOverEConeSize");
  highEt_        = conf_.getParameter<double>("highEt");
  // R9 value to decide converted/unconverted
  minR9Barrel_        = conf_.getParameter<double>("minR9Barrel");
  minR9Endcap_        = conf_.getParameter<double>("minR9Endcap");
  usePrimaryVertex_ = conf_.getParameter<bool>("usePrimaryVertex");
 
  edm::ParameterSet posCalcParameters = 
    config.getParameter<edm::ParameterSet>("posCalcParameters");
  posCalculator_ = PositionCalc(posCalcParameters);

  // Parameters for the position calculation:
  //  std::map<std::string,double> providedParameters;
  // providedParameters.insert(std::make_pair("LogWeighted",conf_.getParameter<bool>("posCalc_logweight")));
  //providedParameters.insert(std::make_pair("T0_barl",conf_.getParameter<double>("posCalc_t0_barl")));
  //providedParameters.insert(std::make_pair("T0_endc",conf_.getParameter<double>("posCalc_t0_endc")));
  //providedParameters.insert(std::make_pair("T0_endcPresh",conf_.getParameter<double>("posCalc_t0_endcPresh")));
  //providedParameters.insert(std::make_pair("W0",conf_.getParameter<double>("posCalc_w0")));
  //providedParameters.insert(std::make_pair("X0",conf_.getParameter<double>("posCalc_x0")));
  //posCalculator_ = PositionCalc(providedParameters);
  // cut values for pre-selection
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("minSCEtBarrel")); 
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("maxHoverEBarrel")); 
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("ecalRecHitSumEtOffsetBarrel")); 
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("ecalRecHitSumEtSlopeBarrel")); 
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("hcalTowerSumEtOffsetBarrel"));
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("hcalTowerSumEtSlopeBarrel"));
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("nTrackSolidConeBarrel"));
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("nTrackHollowConeBarrel"));     
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("trackPtSumSolidConeBarrel"));     
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("trackPtSumHollowConeBarrel"));     
  preselCutValuesBarrel_.push_back(conf_.getParameter<double>("sigmaIetaIetaCutBarrel"));     
  //  
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("minSCEtEndcap")); 
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("maxHoverEEndcap")); 
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("ecalRecHitSumEtOffsetEndcap")); 
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("ecalRecHitSumEtSlopeEndcap")); 
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("hcalTowerSumEtOffsetEndcap"));
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("hcalTowerSumEtSlopeEndcap"));
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("nTrackSolidConeEndcap"));
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("nTrackHollowConeEndcap"));     
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("trackPtSumSolidConeEndcap"));     
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("trackPtSumHollowConeEndcap"));     
  preselCutValuesEndcap_.push_back(conf_.getParameter<double>("sigmaIetaIetaCutEndcap"));     
  //
  energyCorrectionF = EcalClusterFunctionFactory::get()->create("EcalClusterEnergyCorrection", conf_);

  // Register the product
  produces< reco::PhotonCollection >(PhotonCollection_);

}

PhotonProducer::~PhotonProducer ( )

Definition at line 92 of file PhotonProducer.cc.

References energyCorrectionF.

                                {

  delete energyCorrectionF;

}

Member Function Documentation

void PhotonProducer::beginRun	(	edm::Run &	r,
		edm::EventSetup const &	es
	)		`[virtual]`

Reimplemented from edm::EDProducer.

Definition at line 100 of file PhotonProducer.cc.

References conf_, edm::ParameterSet::getParameter(), ExpressReco_HICollisions_FallBack::isolationSumsCalculatorSet, PhotonIsolationCalculator::setup(), and thePhotonIsolationCalculator_.

                                                                              {

    thePhotonIsolationCalculator_ = new PhotonIsolationCalculator();
    edm::ParameterSet isolationSumsCalculatorSet = conf_.getParameter<edm::ParameterSet>("isolationSumsCalculatorSet"); 
    thePhotonIsolationCalculator_->setup(isolationSumsCalculatorSet);

}

void PhotonProducer::endRun	(	edm::Run &	r,
		edm::EventSetup const &	theEventSetup
	)		`[virtual]`

Reimplemented from edm::EDProducer.

Definition at line 108 of file PhotonProducer.cc.

References thePhotonIsolationCalculator_.

                                                                            {

  delete thePhotonIsolationCalculator_;

}

void PhotonProducer::fillPhotonCollection	(	edm::Event &	evt,
		edm::EventSetup const &	es,
		const edm::Handle< reco::PhotonCoreCollection > &	photonCoreHandle,
		const CaloTopology *	topology,
		const EcalRecHitCollection *	ecalBarrelHits,
		const EcalRecHitCollection *	ecalEndcapHits,
		const edm::Handle< CaloTowerCollection > &	hcalTowersHandle,
		math::XYZPoint &	vtx,
		reco::PhotonCollection &	outputCollection,
		int &	iSC
	)		`[private]`

fill shower shape block

Pre-selection loose isolation cuts

Definition at line 211 of file PhotonProducer.cc.

Referenced by produce().

                                                                                                   {
  
  const CaloGeometry* geometry = theCaloGeom_.product();
  const CaloSubdetectorGeometry* subDetGeometry =0 ;
  const CaloSubdetectorGeometry* geometryES = theCaloGeom_->getSubdetectorGeometry(DetId::Ecal, EcalPreshower);
  const EcalRecHitCollection* hits = 0 ;
  std::vector<double> preselCutValues;
  float minR9=0;



  for(unsigned int lSC=0; lSC < photonCoreHandle->size(); lSC++) {

    reco::PhotonCoreRef coreRef(reco::PhotonCoreRef(photonCoreHandle, lSC));
    reco::SuperClusterRef scRef=coreRef->superCluster();
    const reco::SuperCluster* pClus=&(*scRef);
    iSC++;

    int subdet = scRef->seed()->hitsAndFractions()[0].first.subdetId();
    subDetGeometry =  theCaloGeom_->getSubdetectorGeometry(DetId::Ecal, subdet);

    if (subdet==EcalBarrel) 
      { 
        preselCutValues = preselCutValuesBarrel_;
        minR9=minR9Barrel_;
        hits=  ecalBarrelHits;
      }
    else if  (subdet==EcalEndcap) 
      { 
        preselCutValues = preselCutValuesEndcap_;
        minR9=minR9Endcap_;
        hits=  ecalEndcapHits;
      }
    else
      { edm::LogWarning("")<<"PhotonProducer: do not know if it is a barrel or endcap SuperCluster" ; }
    
        
    // SC energy preselection
    if (scRef->energy()/cosh(scRef->eta()) <= preselCutValues[0] ) continue;
    // calculate HoE
    const CaloTowerCollection* hcalTowersColl = hcalTowersHandle.product();
    EgammaTowerIsolation towerIso1(hOverEConeSize_,0.,0.,1,hcalTowersColl) ;  
    EgammaTowerIsolation towerIso2(hOverEConeSize_,0.,0.,2,hcalTowersColl) ;  
    double HoE1=towerIso1.getTowerESum(&(*scRef))/scRef->energy();
    double HoE2=towerIso2.getTowerESum(&(*scRef))/scRef->energy(); 
    //  std::cout << " PhotonProducer " << HoE1  << "  HoE2 " << HoE2 << std::endl;
    // std::cout << " PhotonProducer calcualtion of HoE1 " << HoE1  << "  HoE2 " << HoE2 << std::endl;

    
    // recalculate position of seed BasicCluster taking shower depth for unconverted photon
    math::XYZPoint unconvPos = posCalculator_.Calculate_Location(scRef->seed()->hitsAndFractions(),hits,subDetGeometry,geometryES);


    float maxXtal =   EcalClusterTools::eMax( *(scRef->seed()), &(*hits) );
    float e1x5    =   EcalClusterTools::e1x5(  *(scRef->seed()), &(*hits), &(*topology)); 
    float e2x5    =   EcalClusterTools::e2x5Max(  *(scRef->seed()), &(*hits), &(*topology)); 
    float e3x3    =   EcalClusterTools::e3x3(  *(scRef->seed()), &(*hits), &(*topology)); 
    float e5x5    =   EcalClusterTools::e5x5( *(scRef->seed()), &(*hits), &(*topology)); 
    std::vector<float> cov =  EcalClusterTools::covariances( *(scRef->seed()), &(*hits), &(*topology), geometry); 
    float sigmaEtaEta = sqrt(cov[0]);
    std::vector<float> locCov =  EcalClusterTools::localCovariances( *(scRef->seed()), &(*hits), &(*topology)); 
    float sigmaIetaIeta = sqrt(locCov[0]);

    float r9 =e3x3/(scRef->rawEnergy());
    // compute position of ECAL shower
    math::XYZPoint caloPosition;
    double photonEnergy=0;
    if (r9>minR9) {
      caloPosition = unconvPos;
      // f(eta) correction to e5x5
      double deltaE = energyCorrectionF->getValue(*pClus, 1);
      if (subdet==EcalBarrel) e5x5 = e5x5 * (1.0 +  deltaE/scRef->rawEnergy() );
      photonEnergy=  e5x5    + scRef->preshowerEnergy() ;
    } else {
      caloPosition = scRef->position();
      photonEnergy=scRef->energy();
    }
    

    //std::cout << " dete " << subdet << " r9 " << r9 <<  " uncorrected e5x5 " <<  e5x5uncor << " corrected e5x5 " << e5x5 << " photon energy " << photonEnergy << std::endl;
    
    // compute momentum vector of photon from primary vertex and cluster position
    math::XYZVector direction = caloPosition - vtx;
    math::XYZVector momentum = direction.unit() * photonEnergy ;

    // Create candidate
    const reco::Particle::LorentzVector  p4(momentum.x(), momentum.y(), momentum.z(), photonEnergy );
    reco::Photon newCandidate(p4, caloPosition, coreRef, vtx);

    // Calculate fiducial flags and isolation variable. Blocked are filled from the isolationCalculator
    reco::Photon::FiducialFlags fiducialFlags;
    reco::Photon::IsolationVariables isolVarR03, isolVarR04;
    thePhotonIsolationCalculator_-> calculate ( &newCandidate,evt,es,fiducialFlags,isolVarR04, isolVarR03);
    newCandidate.setFiducialVolumeFlags( fiducialFlags );
    newCandidate.setIsolationVariables(isolVarR04, isolVarR03 );
  
    reco::Photon::ShowerShape  showerShape;
    showerShape.e1x5= e1x5;
    showerShape.e2x5= e2x5;
    showerShape.e3x3= e3x3;
    showerShape.e5x5= e5x5;
    showerShape.maxEnergyXtal =  maxXtal;
    showerShape.sigmaEtaEta =    sigmaEtaEta;
    showerShape.sigmaIetaIeta =  sigmaIetaIeta;
    showerShape.hcalDepth1OverEcal = HoE1;
    showerShape.hcalDepth2OverEcal = HoE2;
    newCandidate.setShowerShapeVariables ( showerShape ); 

    bool isLooseEM=true;
    if ( newCandidate.pt() < highEt_) { 
      if ( newCandidate.hadronicOverEm()                   >= preselCutValues[1] )                                            isLooseEM=false;
      if ( newCandidate.ecalRecHitSumEtConeDR04()          > preselCutValues[2]+ preselCutValues[3]*newCandidate.pt() )       isLooseEM=false;
      if ( newCandidate.hcalTowerSumEtConeDR04()           > preselCutValues[4]+ preselCutValues[5]*newCandidate.pt() )       isLooseEM=false;
      if ( newCandidate.nTrkSolidConeDR04()                > int(preselCutValues[6]) )                                        isLooseEM=false;
      if ( newCandidate.nTrkHollowConeDR04()               > int(preselCutValues[7]) )                                        isLooseEM=false;
      if ( newCandidate.trkSumPtSolidConeDR04()            > preselCutValues[8] )                                             isLooseEM=false;
      if ( newCandidate.trkSumPtHollowConeDR04()           > preselCutValues[9] )                                             isLooseEM=false;
      if ( newCandidate.sigmaIetaIeta()                    > preselCutValues[10] )                                            isLooseEM=false;
    } 
    
    
    if ( isLooseEM)  
      outputPhotonCollection.push_back(newCandidate);
      
        
  }
}

void PhotonProducer::produce	(	edm::Event &	evt,
		const edm::EventSetup &	es
	)		`[virtual]`

Implements edm::EDProducer.

Definition at line 117 of file PhotonProducer.cc.

References barrelEcalHits_, endcapEcalHits_, energyCorrectionF, fillPhotonCollection(), edm::EventSetup::get(), edm::Event::getByLabel(), hcalTowers_, EcalClusterFunctionBaseClass::init(), edm::InputTag::label(), PhotonCollection_, photonCoreProducer_, edm::ESHandle< T >::product(), edm::Event::put(), theCaloGeom_, theCaloTopo_, usePrimaryVertex_, ExpressReco_HICollisions_FallBack::vertexCollection, and vertexProducer_.

                                                                                   {

  using namespace edm;
  //  nEvt_++;

  reco::PhotonCollection outputPhotonCollection;
  std::auto_ptr< reco::PhotonCollection > outputPhotonCollection_p(new reco::PhotonCollection);


  // Get the PhotonCore collection
  bool validPhotonCoreHandle=true;
  Handle<reco::PhotonCoreCollection> photonCoreHandle;
  theEvent.getByLabel(photonCoreProducer_,photonCoreHandle);
  if (!photonCoreHandle.isValid()) {
    edm::LogError("PhotonProducer") << "Error! Can't get the product "<<photonCoreProducer_.label();
    validPhotonCoreHandle=false;
  }

 // Get EcalRecHits
  bool validEcalRecHits=true;
  Handle<EcalRecHitCollection> barrelHitHandle;
  EcalRecHitCollection barrelRecHits;
  theEvent.getByLabel(barrelEcalHits_, barrelHitHandle);
  if (!barrelHitHandle.isValid()) {
    edm::LogError("PhotonProducer") << "Error! Can't get the product "<<barrelEcalHits_.label();
    validEcalRecHits=false; 
  }
  if (  validEcalRecHits)  barrelRecHits = *(barrelHitHandle.product());

  
  Handle<EcalRecHitCollection> endcapHitHandle;
  theEvent.getByLabel(endcapEcalHits_, endcapHitHandle);
  EcalRecHitCollection endcapRecHits;
  if (!endcapHitHandle.isValid()) {
    edm::LogError("PhotonProducer") << "Error! Can't get the product "<<endcapEcalHits_.label();
    validEcalRecHits=false; 
  }
  if( validEcalRecHits) endcapRecHits = *(endcapHitHandle.product());


// get Hcal towers collection 
  Handle<CaloTowerCollection> hcalTowersHandle;
  theEvent.getByLabel(hcalTowers_, hcalTowersHandle);


  // get the geometry from the event setup:
  theEventSetup.get<CaloGeometryRecord>().get(theCaloGeom_);

  //
  // update energy correction function
  energyCorrectionF->init(theEventSetup);  

  edm::ESHandle<CaloTopology> pTopology;
  theEventSetup.get<CaloTopologyRecord>().get(theCaloTopo_);
  const CaloTopology *topology = theCaloTopo_.product();

  // Get the primary event vertex
  Handle<reco::VertexCollection> vertexHandle;
  reco::VertexCollection vertexCollection;
  bool validVertex=true;
  if ( usePrimaryVertex_ ) {
    theEvent.getByLabel(vertexProducer_, vertexHandle);
    if (!vertexHandle.isValid()) {
      edm::LogWarning("PhotonProducer") << "Error! Can't get the product primary Vertex Collection "<< "\n";
      validVertex=false;
    }
    if (validVertex) vertexCollection = *(vertexHandle.product());
  }
  math::XYZPoint vtx(0.,0.,0.);
  if (vertexCollection.size()>0) vtx = vertexCollection.begin()->position();


  int iSC=0; // index in photon collection
  // Loop over barrel and endcap SC collections and fill the  photon collection
  if ( validPhotonCoreHandle) 
    fillPhotonCollection(theEvent,
                         theEventSetup,
                         photonCoreHandle,
                         topology,
                         &barrelRecHits,
                         &endcapRecHits,
                         hcalTowersHandle,
                         vtx,
                         outputPhotonCollection,
                         iSC);
 

  // put the product in the event
  edm::LogInfo("PhotonProducer") << " Put in the event " << iSC << " Photon Candidates \n";
  outputPhotonCollection_p->assign(outputPhotonCollection.begin(),outputPhotonCollection.end());
  theEvent.put( outputPhotonCollection_p, PhotonCollection_);

}