#include <PhotonsWithConversionsAnalyzer.h>

Inheritance diagram for PhotonsWithConversionsAnalyzer:

Public Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)

virtual void	beginJob ()

virtual void	endJob ()

	PhotonsWithConversionsAnalyzer (const edm::ParameterSet &)

virtual	~PhotonsWithConversionsAnalyzer ()

Public Member Functions inherited from edm::EDAnalyzer
	EDAnalyzer ()

std::string	workerType () const

virtual	~EDAnalyzer ()

Private Member Functions
float	etaTransformation (float a, float b)

Private Attributes
TFile *	fOutputFile_

std::string	fOutputFileName_

TH2F *	h2_tk_inPtVsR_

TH2F *	h2_tk_nHitsVsR_

TH1F *	h_deltaEta_

TH1F *	h_deltaPhi_

TH1F *	h_ErecoEMC_

TH1F *	h_MCConvE_

TH1F *	h_MCConvEta_

TH1F *	h_MCConvPt_

TH1F *	h_MCphoE_

TH1F *	h_MCphoEta_

TH1F *	h_MCphoPhi_

TH1F *	h_phoE_

TH1F *	h_phoEta_

TH1F *	h_phoPhi_

TH1F *	h_scE_

TH1F *	h_scEt_

TH1F *	h_scEta_

TH1F *	h_scPhi_

std::string	HepMCLabel

int	nEvt_

int	nMatched_

int	nMCPho_

std::string	photonCollection_

std::string	photonCollectionProducer_

std::string	SimHitLabel

std::string	SimTkLabel

std::string	SimVtxLabel

PhotonMCTruthFinder *	thePhotonMCTruthFinder_

Additional Inherited Members
Public Types inherited from edm::EDAnalyzer
typedef EDAnalyzer	ModuleType

typedef WorkerT< EDAnalyzer >	WorkerType

Static Public Member Functions inherited from edm::EDAnalyzer
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::EDAnalyzer
CurrentProcessingContext const *	currentContext () const

Detailed Description

Definition at line 23 of file PhotonsWithConversionsAnalyzer.h.

Constructor & Destructor Documentation

PhotonsWithConversionsAnalyzer::PhotonsWithConversionsAnalyzer ( const edm::ParameterSet & pset )

explicit

Definition at line 51 of file PhotonsWithConversionsAnalyzer.cc.

References edm::ParameterSet::getParameter().

   {
 
   photonCollectionProducer_ = pset.getParameter<std::string>("phoProducer");
   photonCollection_ = pset.getParameter<std::string>("photonCollection");
   //
 
 
 }

PhotonsWithConversionsAnalyzer::~PhotonsWithConversionsAnalyzer ( )

virtual

Definition at line 63 of file PhotonsWithConversionsAnalyzer.cc.

                                                                 {
 
   delete thePhotonMCTruthFinder_;
 
 }

Member Function Documentation

void PhotonsWithConversionsAnalyzer::analyze	(	const edm::Event &	e,
		const edm::EventSetup &
	)

virtual

Loop over recontructed photons

End loop over Reco particles

End loop over MC particles

Implements edm::EDAnalyzer.

Definition at line 162 of file PhotonsWithConversionsAnalyzer.cc.

References conversions_cfi::conversions, gather_cfg::cout, delta, Geom::deltaPhi(), HcalObjRepresent::Fill(), edm::Event::getByLabel(), i, edm::EventBase::id(), Geom::pi(), funct::pow(), edm::RefVector< C, T, F >::size(), mathSSE::sqrt(), testEve_cfg::tracks, and Geom::twoPi().

 {
 
 
   using namespace edm;
   const float etaPhiDistance=0.01;
   // Fiducial region
   //UNUSED const float TRK_BARL =0.9;
   //UNUSED const float BARL = 1.4442; // DAQ TDR p.290
   //UNUSED const float END_LO = 1.566;
   //UNUSED const float END_HI = 2.5;
  // Electron mass
   //UNUSED const Float_t mElec= 0.000511;
 
 
   nEvt_++;
   LogInfo("ConvertedPhotonAnalyzer") << "ConvertedPhotonAnalyzer Analyzing event number: " << e.id() << " Global Counter " << nEvt_ <<"\n";
   //  LogDebug("ConvertedPhotonAnalyzer") << "ConvertedPhotonAnalyzer Analyzing event number: "  << e.id() << " Global Counter " << nEvt_ <<"\n";
   std::cout << "ConvertedPhotonAnalyzer Analyzing event number: "  << e.id() << " Global Counter " << nEvt_ <<"\n";
 
 
   Handle<reco::PhotonCollection> photonHandle;
   e.getByLabel(photonCollectionProducer_, photonCollection_ , photonHandle);
   const reco::PhotonCollection photonCollection = *(photonHandle.product());
   std::cout  << "ConvertedPhotonAnalyzer  Photons with conversions collection size " << photonCollection.size() << "\n";
 
 
   std::cout  << " ConvertedPhotonAnalyzer Looking for MC truth " << "\n";
 
   //get simtrack info
   std::vector<SimTrack> theSimTracks;
   std::vector<SimVertex> theSimVertices;
 
   edm::Handle<SimTrackContainer> SimTk;
   edm::Handle<SimVertexContainer> SimVtx;
   e.getByLabel("g4SimHits",SimTk);
   e.getByLabel("g4SimHits",SimVtx);
 
   theSimTracks.insert(theSimTracks.end(),SimTk->begin(),SimTk->end());
   theSimVertices.insert(theSimVertices.end(),SimVtx->begin(),SimVtx->end());
 
   std::vector<PhotonMCTruth> mcPhotons=thePhotonMCTruthFinder_->find (theSimTracks,  theSimVertices);
   std::cout << " ConvertedPhotonAnalyzer mcPhotons size " <<  mcPhotons.size() << std::endl;
 
 
 
   // Loop over simulated photons
   //UNUSED int iDet=0;
   //UNUSED int iRadius=-1;
   //UNUSED int indPho=0;
 
   for ( std::vector<PhotonMCTruth>::const_iterator mcPho=mcPhotons.begin(); mcPho !=mcPhotons.end(); mcPho++) {
     float mcPhi= (*mcPho).fourMomentum().phi();
     float mcEta= (*mcPho).fourMomentum().pseudoRapidity();
     mcEta = etaTransformation(mcEta, (*mcPho).primaryVertex().z() );
 
     if ( (*mcPho).fourMomentum().et() < 20 ) continue;
     //    if ( ! (  fabs(mcEta) <= BARL || ( fabs(mcEta) >= END_LO && fabs(mcEta) <=END_HI ) ) ) {
     //     continue;
     //} // all ecal fiducial region
 
 
 
     h_MCphoE_->Fill(  (*mcPho).fourMomentum().e());
     h_MCphoEta_->Fill( (*mcPho).fourMomentum().eta());
     h_MCphoPhi_->Fill(  (*mcPho).fourMomentum().phi());
 
 
 
     // keep only visible conversions
     if (  (*mcPho).isAConversion() == 0 ) continue;
 
 
     nMCPho_++;
 
     h_MCConvEta_ ->Fill ( fabs( (*mcPho).fourMomentum().pseudoRapidity()) - 0.001);
 
 
     bool REJECTED;
 
 
     //std::cout   << " ConvertedPhotonAnalyzer  Starting loop over photon candidates " << "\n";
     for( reco::PhotonCollection::const_iterator  iPho = photonCollection.begin(); iPho != photonCollection.end(); iPho++) {
       REJECTED=false;
 
       //      std::cout  << " ConvertedPhotonAnalyzer Reco SC energy " << (*iPho).superCluster()->energy() <<  "\n";
 
       float phiClu=(*iPho).superCluster()->phi();
       float etaClu=(*iPho).superCluster()->eta();
       float deltaPhi = phiClu-mcPhi;
       float deltaEta = etaClu-mcEta;
 
 
       if ( deltaPhi > Geom::pi()  ) deltaPhi -= Geom::twoPi();
       if ( deltaPhi < -Geom::pi() ) deltaPhi += Geom::twoPi();
       deltaPhi=pow(deltaPhi,2);
       deltaEta=pow(deltaEta,2);
       float delta =  deltaPhi+deltaEta ;
       if (  delta >= etaPhiDistance  )  REJECTED=true;
 
 
       //      if ( ! (  fabs(etaClu) <= BARL || ( fabs(etaClu) >= END_LO && fabs(etaClu) <=END_HI ) ) ) REJECTED=true;
 
       if ( REJECTED ) continue;
       std::cout << " MATCHED " << std::endl;
       nMatched_++;
 
 
       //      std::cout << " ConvertedPhotonAnalyzer Matching candidate " << std::endl;
 
       // std::cout << " ConvertedPhotonAnalyzer Photons isAconversion " << (*mcPho).isAConversion() << " mcMatchingPhoton energy " <<  (*mcPho).fourMomentum().e()  << " ConvertedPhotonAnalyzer conversion vertex R " <<  (*mcPho).vertex().perp() << " Z " <<  (*mcPho).vertex().z() <<  std::endl;
 
 
       h_ErecoEMC_->Fill(   (*iPho).superCluster()->energy()/(*mcPho).fourMomentum().e());
       h_deltaPhi_-> Fill ( (*iPho).superCluster()->position().phi()- mcPhi);
       h_deltaEta_-> Fill ( (*iPho).superCluster()->position().eta()- mcEta);
 
       h_scE_->Fill( (*iPho).superCluster()->energy() );
       h_scEt_->Fill( (*iPho).superCluster()->energy()/cosh( (*iPho).superCluster()->position().eta()) );
       h_scEta_->Fill( (*iPho).superCluster()->position().eta() );
       h_scPhi_->Fill( (*iPho).superCluster()->position().phi() );
 
 
       h_phoE_->Fill( (*iPho).energy() );
       h_phoEta_->Fill( (*iPho).eta() );
       h_phoPhi_->Fill( (*iPho).phi() );
 
       if ( !(*iPho).hasConversionTracks() ) continue;
       //   std::cout << " This photons has " << (*iPho).conversions().size() << " conversions candidates " << std::endl;
       reco::ConversionRefVector conversions = (*iPho).conversions();
       //std::vector<reco::ConversionRef> conversions = (*iPho).conversions();
 
 
       for (unsigned int i=0; i<conversions.size(); i++) {
     //std::cout << " Conversion candidate Energy " << (*iPho).energy() << " number of tracks " << conversions[i]->nTracks() << std::endl;
         std::vector< edm::RefToBase<reco::Track> > tracks = conversions[i]->tracks();
 
     for (unsigned int i=0; i<tracks.size(); i++) {
 
       //      std::cout  << " ConvertedPhotonAnalyzer Reco Track charge " <<  tracks[i]->charge() << "  Num of RecHits " << tracks[i]->recHitsSize() << " inner momentum " <<  sqrt ( tracks[i]->innerMomentum().Mag2() )  <<  "\n";
 
 
       h2_tk_nHitsVsR_ -> Fill (  (*mcPho).vertex().perp(), tracks[i]->recHitsSize()   );
       h2_tk_inPtVsR_->Fill  (  (*mcPho).vertex().perp(),  sqrt( tracks[i]->innerMomentum().Mag2() ) );
     }
 
       }
 
 
     }
 
   }
 
 
 }

void PhotonsWithConversionsAnalyzer::beginJob ( void )

virtual

Reco - MC

Reimplemented from edm::EDAnalyzer.

Definition at line 71 of file PhotonsWithConversionsAnalyzer.cc.

References TFileDirectory::make(), and mathSSE::return().

 {
 
 
   nEvt_=0;
   nMCPho_=0;
   nMatched_=0;
 
 
   thePhotonMCTruthFinder_ = new PhotonMCTruthFinder();
 
 
 
   edm::Service<TFileService> fs;
 
 
   h_ErecoEMC_  = fs->make<TH1F>("deltaE","    delta(reco-mc) energy",100,0.,2.);
   h_deltaPhi_ = fs->make<TH1F>("deltaPhi","  delta(reco-mc) phi",100,-0.1, 0.1);
   h_deltaEta_ = fs->make<TH1F>("deltaEta","  delta(reco-mc) eta",100,-0.05, 0.05);
 
   h_MCphoE_ = fs->make<TH1F>("MCphoE","MC photon energy",100,0.,100.);
   h_MCphoPhi_ = fs->make<TH1F>("MCphoPhi","MC photon phi",40,-3.14, 3.14);
   h_MCphoEta_ = fs->make<TH1F>("MCphoEta","MC photon eta",40,-3., 3.);
 
 
   h_MCConvE_ = fs->make<TH1F>("MCConvE","MC converted photon energy",100,0.,100.);
   h_MCConvPt_ = fs->make<TH1F>("MCConvPt","MC converted photon pt",100,0.,100.);
   h_MCConvEta_ = fs->make<TH1F>("MCConvEta","MC converted photon eta",50, 0., 2.5);
 
   h_scE_ = fs->make<TH1F>("scE","SC Energy ",100,0., 200.);
   h_scEt_ = fs->make<TH1F>("scEt","SC Et ",100,0., 200.);
   h_scEta_ = fs->make<TH1F>("scEta","SC Eta ",40,-3., 3.);
   h_scPhi_ = fs->make<TH1F>("scPhi","SC Phi ",40, -3.14, 3.14);
   //
   h_phoE_ = fs->make<TH1F>("phoE","Photon Energy ",100,0., 200.);
   h_phoEta_ = fs->make<TH1F>("phoEta","Photon Eta ",40,-3., 3.);
   h_phoPhi_ = fs->make<TH1F>("phoPhi","Photon  Phi ",40,  -3.14, 3.14);
 
   // Recontructed tracks from converted photon candidates
   h2_tk_nHitsVsR_ = fs->make<TH2F>("tknHitsVsR","Tracks Hits vs R  ", 12,0.,120.,20,0.5, 20.5);
   h2_tk_inPtVsR_  = fs->make<TH2F>("tkInPtvsR","Tracks inner Pt vs R  ", 12,0.,120.,100,0., 100.);
 
 
   return ;
 }

void PhotonsWithConversionsAnalyzer::endJob ( void )

virtual

Reimplemented from edm::EDAnalyzer.

Definition at line 324 of file PhotonsWithConversionsAnalyzer.cc.

References gather_cfg::cout, and mathSSE::return().

 {
 
   //   fOutputFile_->Write() ;
   // fOutputFile_->Close() ;
 
    edm::LogInfo("ConvertedPhotonAnalyzer") << "Analyzed " << nEvt_  << "\n";
    // std::cout  << "::endJob Analyzed " << nEvt_ << " events " << " with total " << nPho_ << " Photons " << "\n";
    std::cout  << "ConvertedPhotonAnalyzer::endJob Analyzed " << nEvt_ << " events " << "\n";
 
    return ;
 }

float PhotonsWithConversionsAnalyzer::etaTransformation	(	float	a,
		float	b
	)

private

Definition at line 122 of file PhotonsWithConversionsAnalyzer.cc.

References ETA, etaBarrelEndcap, funct::log(), PI, R_ECAL, funct::tan(), and Z_Endcap.

                                                                                             {
 
 //---Definitions
     const float PI    = 3.1415927;
     //UNUSED const float TWOPI = 2.0*PI;
 
 //---Definitions for ECAL
     const float R_ECAL           = 136.5;
     const float Z_Endcap         = 328.0;
     const float etaBarrelEndcap  = 1.479;
 
 //---ETA correction
 
     float Theta = 0.0  ;
         float ZEcal = R_ECAL*sinh(EtaParticle)+Zvertex;
 
     if(ZEcal != 0.0) Theta = atan(R_ECAL/ZEcal);
     if(Theta<0.0) Theta = Theta+PI ;
     float ETA = - log(tan(0.5*Theta));
 
     if( fabs(ETA) > etaBarrelEndcap )
       {
        float Zend = Z_Endcap ;
        if(EtaParticle<0.0 )  Zend = -Zend ;
        float Zlen = Zend - Zvertex ;
        float RR = Zlen/sinh(EtaParticle);
        Theta = atan(RR/Zend);
        if(Theta<0.0) Theta = Theta+PI ;
        ETA = - log(tan(0.5*Theta));
       }
 //---Return the result
         return ETA;
 //---end
 }