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File indexing completed on 2021-08-26 03:16:15

0001 //*****************************************************************************
0002 // File:      EgammaHcalExtractor.cc
0003 // ----------------------------------------------------------------------------
0004 // OrigAuth:  Matthias Mozer
0005 // Institute: IIHE-VUB
0006 //=============================================================================
0007 //*****************************************************************************
0008 
0009 #include "DataFormats/Candidate/interface/Candidate.h"
0010 #include "DataFormats/EgammaReco/interface/SuperCluster.h"
0011 #include "DataFormats/EgammaReco/interface/SuperClusterFwd.h"
0012 #include "DataFormats/GeometryVector/interface/GlobalPoint.h"
0013 #include "DataFormats/GeometryVector/interface/GlobalVector.h"
0014 #include "DataFormats/HcalDetId/interface/HcalDetId.h"
0015 #include "DataFormats/HcalRecHit/interface/HcalRecHitCollections.h"
0016 #include "DataFormats/RecoCandidate/interface/IsoDeposit.h"
0017 #include "DataFormats/RecoCandidate/interface/RecoCandidate.h"
0018 #include "DataFormats/TrackReco/interface/Track.h"
0019 #include "DataFormats/TrackReco/interface/TrackFwd.h"
0020 #include "FWCore/Framework/interface/ConsumesCollector.h"
0021 #include "FWCore/Framework/interface/ESHandle.h"
0022 #include "FWCore/Framework/interface/Event.h"
0023 #include "FWCore/Framework/interface/EventSetup.h"
0024 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0025 #include "FWCore/Utilities/interface/InputTag.h"
0026 #include "Geometry/CaloGeometry/interface/CaloGeometry.h"
0027 #include "Geometry/CommonDetUnit/interface/TrackingGeometry.h"
0028 #include "Geometry/Records/interface/CaloGeometryRecord.h"
0029 #include "Geometry/Records/interface/TrackerDigiGeometryRecord.h"
0030 #include "PhysicsTools/IsolationAlgos/interface/IsoDepositExtractor.h"
0031 #include "RecoCaloTools/Selectors/interface/CaloDualConeSelector.h"
0032 #include "RecoEgamma/EgammaIsolationAlgos/interface/EgammaRecHitIsolation.h"
0033 
0034 #include <Math/VectorUtil.h>
0035 
0036 #include <vector>
0037 #include <functional>
0038 
0039 namespace egammaisolation {
0040 
0041   class EgammaHcalExtractor : public reco::isodeposit::IsoDepositExtractor {
0042   public:
0043     EgammaHcalExtractor(const edm::ParameterSet& par, edm::ConsumesCollector&& iC) : EgammaHcalExtractor(par, iC) {}
0044     EgammaHcalExtractor(const edm::ParameterSet& par, edm::ConsumesCollector& iC);
0045 
0046     ~EgammaHcalExtractor() override;
0047 
0048     void fillVetos(const edm::Event& ev, const edm::EventSetup& evSetup, const reco::TrackCollection& tracks) override {
0049     }
0050     reco::IsoDeposit deposit(const edm::Event& ev,
0051                              const edm::EventSetup& evSetup,
0052                              const reco::Track& track) const override {
0053       throw cms::Exception("Configuration Error")
0054           << "This extractor " << (typeid(this).name()) << " is not made for tracks";
0055     }
0056     reco::IsoDeposit deposit(const edm::Event& ev,
0057                              const edm::EventSetup& evSetup,
0058                              const reco::Candidate& c) const override;
0059 
0060   private:
0061     double extRadius_;
0062     double intRadius_;
0063     double etLow_;
0064 
0065     edm::EDGetTokenT<HBHERecHitCollection> hcalRecHitProducerToken_;
0066     edm::ESGetToken<CaloGeometry, CaloGeometryRecord> geometryToken_;
0067   };
0068 }  // namespace egammaisolation
0069 
0070 #include "FWCore/Framework/interface/MakerMacros.h"
0071 #include "PhysicsTools/IsolationAlgos/interface/IsoDepositExtractorFactory.h"
0072 DEFINE_EDM_PLUGIN(IsoDepositExtractorFactory, egammaisolation::EgammaHcalExtractor, "EgammaHcalExtractor");
0073 
0074 using namespace std;
0075 
0076 using namespace egammaisolation;
0077 using namespace reco::isodeposit;
0078 
0079 EgammaHcalExtractor::EgammaHcalExtractor(const edm::ParameterSet& par, edm::ConsumesCollector& iC)
0080     : extRadius_(par.getParameter<double>("extRadius")),
0081       intRadius_(par.getParameter<double>("intRadius")),
0082       etLow_(par.getParameter<double>("etMin")),
0083       hcalRecHitProducerToken_(iC.consumes<HBHERecHitCollection>(par.getParameter<edm::InputTag>("hcalRecHits"))),
0084       geometryToken_(iC.esConsumes()) {}
0085 
0086 EgammaHcalExtractor::~EgammaHcalExtractor() {}
0087 
0088 reco::IsoDeposit EgammaHcalExtractor::deposit(const edm::Event& iEvent,
0089                                               const edm::EventSetup& iSetup,
0090                                               const reco::Candidate& emObject) const {
0091   //Get MetaRecHit collection
0092   auto const& hcalRecHits = iEvent.get(hcalRecHitProducerToken_);
0093 
0094   //Get Calo Geometry
0095   const CaloGeometry* caloGeom = &iSetup.getData(geometryToken_);
0096   CaloDualConeSelector<HBHERecHit> coneSel(intRadius_, extRadius_, caloGeom, DetId::Hcal);
0097 
0098   //Take the SC position
0099   reco::SuperClusterRef sc = emObject.get<reco::SuperClusterRef>();
0100   math::XYZPoint caloPosition = sc->position();
0101   GlobalPoint point(caloPosition.x(), caloPosition.y(), caloPosition.z());
0102   // needed: coneSel.select(eta,phi,hits) is not the same!
0103 
0104   Direction candDir(caloPosition.eta(), caloPosition.phi());
0105   reco::IsoDeposit deposit(candDir);
0106   deposit.setVeto(reco::IsoDeposit::Veto(candDir, intRadius_));
0107   double sinTheta = sin(2 * atan(exp(-sc->eta())));
0108   deposit.addCandEnergy(sc->energy() * sinTheta);
0109 
0110   //Compute the HCAL energy behind ECAL
0111   coneSel.selectCallback(point, hcalRecHits, [&](const HBHERecHit& i) {
0112     const GlobalPoint& hcalHit_position = caloGeom->getPosition(i.detid());
0113     double hcalHit_eta = hcalHit_position.eta();
0114     double hcalHit_Et = i.energy() * sin(2 * atan(exp(-hcalHit_eta)));
0115     if (hcalHit_Et > etLow_) {
0116       deposit.addDeposit(Direction(hcalHit_eta, hcalHit_position.phi()), hcalHit_Et);
0117     }
0118   });
0119 
0120   return deposit;
0121 }