#include <PreshowerClusterProducer.h>

Inheritance diagram for PreshowerClusterProducer:

Public Types
typedef math::XYZPoint	Point
Public Member Functions
	PreshowerClusterProducer (const edm::ParameterSet &ps)
virtual void	produce (edm::Event &evt, const edm::EventSetup &es)
void	set (const edm::EventSetup &es)
	~PreshowerClusterProducer ()
Private Attributes
double	alpha0_
double	alpha1_
double	alpha2_
double	alpha3_
std::string	assocSClusterCollection_
edm::InputTag	endcapSClusterProducer_
edm::ESHandle< ESChannelStatus >	esChannelStatus_
edm::ESHandle < ESEEIntercalibConstants >	esEEInterCalib_
edm::ESHandle< ESGain >	esgain_
edm::ESHandle< ESMIPToGeVConstant >	esMIPToGeV_
double	etThresh_
double	gamma0_
double	gamma1_
double	gamma2_
double	gamma3_
double	mip_
int	nEvt_
PreshowerClusterAlgo *	presh_algo
float	preshClustECut
std::string	preshClusterCollectionX_
std::string	preshClusterCollectionY_
edm::InputTag	preshHitProducer_
int	preshNclust_

Detailed Description

Definition at line 20 of file PreshowerClusterProducer.h.

Member Typedef Documentation

typedef math::XYZPoint PreshowerClusterProducer::Point

Definition at line 24 of file PreshowerClusterProducer.h.

Constructor & Destructor Documentation

PreshowerClusterProducer::PreshowerClusterProducer ( const edm::ParameterSet & ps ) [explicit]

Definition at line 49 of file PreshowerClusterProducer.cc.

References edm::ParameterSet::getParameter().

                                                                            {

  // use configuration file to setup input/output collection names 
  preshHitProducer_   = ps.getParameter<edm::InputTag>("preshRecHitProducer");

  // Name of a SuperClusterCollection to make associations:
  endcapSClusterProducer_   = ps.getParameter<edm::InputTag>("endcapSClusterProducer");

  // Output collections:
  preshClusterCollectionX_ = ps.getParameter<std::string>("preshClusterCollectionX");
  preshClusterCollectionY_ = ps.getParameter<std::string>("preshClusterCollectionY");
  preshNclust_             = ps.getParameter<int>("preshNclust");

  etThresh_ =  ps.getParameter<double>("etThresh");

  assocSClusterCollection_ = ps.getParameter<std::string>("assocSClusterCollection");

  produces< reco::PreshowerClusterCollection >(preshClusterCollectionX_);
  produces< reco::PreshowerClusterCollection >(preshClusterCollectionY_);
  produces< reco::SuperClusterCollection >(assocSClusterCollection_);

  float preshStripECut = ps.getParameter<double>("preshStripEnergyCut");
    int preshSeededNst = ps.getParameter<int>("preshSeededNstrip");
  preshClustECut = ps.getParameter<double>("preshClusterEnergyCut");


  presh_algo = new PreshowerClusterAlgo(preshStripECut,preshClustECut,preshSeededNst);

  nEvt_ = 0;  

}

PreshowerClusterProducer::~PreshowerClusterProducer ( )

Definition at line 82 of file PreshowerClusterProducer.cc.

                                                    {
   delete presh_algo;
}

Member Function Documentation

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

Implements edm::EDProducer.

Definition at line 87 of file PreshowerClusterProducer.cc.

References edm::SortedCollection< T, SORT >::begin(), DetId::Ecal, EcalPreshower, edm::SortedCollection< T, SORT >::end(), reco::CaloCluster::energy(), geometry, edm::EventSetup::get(), edm::Event::getByLabel(), ESCondObjectContainer< T >::getMap(), i, LogTrace, point, edm::Handle< T >::product(), edm::PtrVector< T >::push_back(), edm::Event::put(), HI_PhotonSkim_cff::rechits, reco::PreshowerCluster::setBCRef(), reco::SuperCluster::setPreshowerPlanesStatus(), funct::sin(), edm::SortedCollection< T, SORT >::size(), X, and Gflash::Z.

                                                                             {

  edm::Handle< EcalRecHitCollection >   pRecHits;
  edm::Handle< reco::SuperClusterCollection > pSuperClusters;

  // get the ECAL geometry:
  edm::ESHandle<CaloGeometry> geoHandle;
  es.get<CaloGeometryRecord>().get(geoHandle);

  // retrieve ES-EE intercalibration constants and channel status
  set(es);
  const ESChannelStatus *channelStatus = esChannelStatus_.product();

  const CaloSubdetectorGeometry *geometry = geoHandle->getSubdetectorGeometry(DetId::Ecal, EcalPreshower);
  const CaloSubdetectorGeometry *& geometry_p = geometry;

   // create auto_ptr to a PreshowerClusterCollection
   std::auto_ptr< reco::PreshowerClusterCollection > clusters_p1(new reco::PreshowerClusterCollection);
   std::auto_ptr< reco::PreshowerClusterCollection > clusters_p2(new reco::PreshowerClusterCollection);
   // create new collection of corrected super clusters
   std::auto_ptr< reco::SuperClusterCollection > superclusters_p(new reco::SuperClusterCollection);

   CaloSubdetectorTopology * topology_p=0;
   if (geometry)
     topology_p  = new EcalPreshowerTopology(geoHandle);

   // fetch the product (pSuperClusters)
   evt.getByLabel(endcapSClusterProducer_, pSuperClusters);   
   const reco::SuperClusterCollection* SClusts = pSuperClusters.product();
   
   // fetch the product (RecHits)
   evt.getByLabel( preshHitProducer_, pRecHits);
   // pointer to the object in the product
   const EcalRecHitCollection* rechits = pRecHits.product(); // EcalRecHitCollection hit_collection = *rhcHandle;

   LogTrace("EcalClusters") << "PreshowerClusterProducerInfo: ### Total # of preshower RecHits: "<< rechits->size();
   
  // make the map of rechits:
   std::map<DetId, EcalRecHit> rechits_map;
   EcalRecHitCollection::const_iterator it;
   for (it = rechits->begin(); it != rechits->end(); it++) {
     // remove bad ES rechits
     if (it->recoFlag()==1 || it->recoFlag()==14 || (it->recoFlag()<=10 && it->recoFlag()>=5)) continue;
     //Make the map of DetID, EcalRecHit pairs
     rechits_map.insert(std::make_pair(it->id(), *it));   
   }
   // The set of used DetID's for a given event:
   std::set<DetId> used_strips;
   used_strips.clear();
   LogTrace("EcalClusters") << "PreshowerClusterProducerInfo: ### rechits_map of size " << rechits_map.size() <<" was created!";
   
  
  reco::PreshowerClusterCollection clusters1, clusters2;   // output collection of corrected PCs
  reco::SuperClusterCollection new_SC; // output collection of corrected SCs

  //make cycle over super clusters
  reco::SuperClusterCollection::const_iterator it_super;
  int isc = 0;
  for ( it_super=SClusts->begin();  it_super!=SClusts->end(); it_super++ ) {     
       float e1=0;
       float e2=0;
       float deltaE=0;
       reco::CaloClusterPtrVector new_BC; 
       ++isc;
       LogTrace("EcalClusters")<< " superE = " << it_super->energy() << " superETA = " << it_super->eta() << " superPHI = " << it_super->phi() ;
       
       
       int nBC = 0;
       int condP1 = 1; // 0: dead channel; 1: active channel
       int condP2 = 1;
       reco::CaloCluster_iterator bc_iter = it_super->clustersBegin();
       for ( ; bc_iter !=it_super->clustersEnd(); ++bc_iter ) {  
         if (geometry) {
           
           // Get strip position at intersection point of the line EE - Vertex:
           double X = (*bc_iter)->x();
           double Y = (*bc_iter)->y();
           double Z = (*bc_iter)->z();        
           const GlobalPoint point(X,Y,Z);    
           
           DetId tmp1 = (dynamic_cast<const EcalPreshowerGeometry*>(geometry_p))->getClosestCellInPlane(point, 1);
           DetId tmp2 = (dynamic_cast<const EcalPreshowerGeometry*>(geometry_p))->getClosestCellInPlane(point, 2);
           ESDetId strip1 = (tmp1 == DetId(0)) ? ESDetId(0) : ESDetId(tmp1);
           ESDetId strip2 = (tmp2 == DetId(0)) ? ESDetId(0) : ESDetId(tmp2);     
           
           if (nBC == 0) {
             if (strip1 != ESDetId(0) && strip2 != ESDetId(0)) {
               ESChannelStatusMap::const_iterator status_p1 = channelStatus->getMap().find(strip1);
               ESChannelStatusMap::const_iterator status_p2 = channelStatus->getMap().find(strip2);
               if (status_p1->getStatusCode() == 1) condP1 = 0;
               if (status_p2->getStatusCode() == 1) condP2 = 0;
             } else if (strip1 == ESDetId(0))
               condP1 = 0;
             else if (strip2 == ESDetId(0))
               condP2 = 0;
           }
           
           
           // Get a vector of ES clusters (found by the PreshSeeded algorithm) associated with a given EE basic cluster.           
           for (int i=0; i<preshNclust_; i++) {
             reco::PreshowerCluster cl1 = presh_algo->makeOneCluster(strip1,&used_strips,&rechits_map,geometry_p,topology_p);   
             cl1.setBCRef(*bc_iter);
             if (cl1.energy() > preshClustECut) {
               clusters1.push_back(cl1);
               e1 += cl1.energy();       
             }
             reco::PreshowerCluster cl2 = presh_algo->makeOneCluster(strip2,&used_strips,&rechits_map,geometry_p,topology_p); 
             cl2.setBCRef(*bc_iter);
             
             if ( cl2.energy() > preshClustECut) {
               clusters2.push_back(cl2);
               e2 += cl2.energy();
             }                                 
           } // end of cycle over ES clusters
         }

         new_BC.push_back(*bc_iter);
         nBC++;
       }  // end of cycle over BCs
       
       LogTrace("EcalClusters") << " For SC #" << isc-1 << ", containing " 
                         << it_super->clustersSize()                          
                         << " basic clusters, PreshowerClusterAlgo made " 
                         << clusters1.size() << " in X plane and " 
                         << clusters2.size()       
                         << " in Y plane " << " preshower clusters " ;
       
       // update energy of the SuperCluster    
       if(e1+e2 > 1.0e-10) {
         // GeV to #MIPs
         e1 = e1 / mip_;
         e2 = e2 / mip_;

         if (condP1 == 1 && condP2 == 1) deltaE = gamma0_*(e1 + alpha0_*e2);       
         else if (condP1 == 1 && condP2 == 0) deltaE = gamma1_*(e1 + alpha1_*e2);       
         else if (condP1 == 0 && condP2 == 1) deltaE = gamma2_*(e1 + alpha2_*e2);       
         else if (condP1 == 0 && condP2 == 0) deltaE = gamma3_*(e1 + alpha3_*e2);       
       }
       
       //corrected Energy
       float E = it_super->energy() + deltaE;
       
       LogTrace("EcalClusters") << " Creating corrected SC ";
    
       reco::SuperCluster sc(E, it_super->position(), it_super->seed(), new_BC, deltaE);
       if (condP1 == 1 && condP2 == 1) sc.setPreshowerPlanesStatus(0);
       else if (condP1 == 1 && condP2 == 0) sc.setPreshowerPlanesStatus(1);
       else if (condP1 == 0 && condP2 == 1) sc.setPreshowerPlanesStatus(2);
       else if (condP1 == 0 && condP2 == 0) sc.setPreshowerPlanesStatus(3);
       
       if (sc.energy()*sin(sc.position().theta())>etThresh_)
         new_SC.push_back(sc);
         LogTrace("EcalClusters") << " SuperClusters energies: new E = " << sc.energy() << " vs. old E =" << it_super->energy();
      
   } // end of cycle over SCs

   // copy the preshower clusters into collections and put in the Event:
   clusters_p1->assign(clusters1.begin(), clusters1.end());
   clusters_p2->assign(clusters2.begin(), clusters2.end());
   // put collection of preshower clusters to the event
   evt.put( clusters_p1, preshClusterCollectionX_ );
   evt.put( clusters_p2, preshClusterCollectionY_ );
   LogTrace("EcalClusters") << "Preshower clusters added to the event" ;

   // put collection of corrected super clusters to the event
   superclusters_p->assign(new_SC.begin(), new_SC.end());
   evt.put(superclusters_p, assocSClusterCollection_);
   LogTrace("EcalClusters") << "Corrected SClusters added to the event" ;

   if (topology_p)
     delete topology_p;

   nEvt_++;

}

void PreshowerClusterProducer::set ( const edm::EventSetup & es )

Definition at line 263 of file PreshowerClusterProducer.cc.

                                                          {

  es.get<ESGainRcd>().get(esgain_);
  const ESGain *gain = esgain_.product();

  double ESGain = gain->getESGain();

  es.get<ESMIPToGeVConstantRcd>().get(esMIPToGeV_);
  const ESMIPToGeVConstant *mipToGeV = esMIPToGeV_.product();

  mip_ = (ESGain == 1) ? mipToGeV->getESValueLow() : mipToGeV->getESValueHigh(); 

  es.get<ESChannelStatusRcd>().get(esChannelStatus_);

  es.get<ESEEIntercalibConstantsRcd>().get(esEEInterCalib_);
  const ESEEIntercalibConstants *esEEInterCalib = esEEInterCalib_.product();

  // both planes work
  gamma0_ = (ESGain == 1) ? esEEInterCalib->getGammaLow0() : esEEInterCalib->getGammaHigh0();
  alpha0_ = (ESGain == 1) ? esEEInterCalib->getAlphaLow0() : esEEInterCalib->getAlphaHigh0();

  // only first plane works 
  gamma1_ = (ESGain == 1) ? esEEInterCalib->getGammaLow1() : esEEInterCalib->getGammaHigh1();
  alpha1_ = (ESGain == 1) ? esEEInterCalib->getAlphaLow1() : esEEInterCalib->getAlphaHigh1();

  // only second plane works
  gamma2_ = (ESGain == 1) ? esEEInterCalib->getGammaLow2() : esEEInterCalib->getGammaHigh2();
  alpha2_ = (ESGain == 1) ? esEEInterCalib->getAlphaLow2() : esEEInterCalib->getAlphaHigh2();

  // both planes do not work
  gamma3_ = (ESGain == 1) ? esEEInterCalib->getGammaLow3() : esEEInterCalib->getGammaHigh3();
  alpha3_ = (ESGain == 1) ? esEEInterCalib->getAlphaLow3() : esEEInterCalib->getAlphaHigh3();

}