/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Validation/EventGenerator/plugins/BasicHepMCHeavyIonValidation.cc

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/*class BasicHepMCHeavyIonValidation
 *  
 *  Class to fill dqm monitor elements from existing EDM file
 *  Quan Wang - 04/2013
 */

#include "Validation/EventGenerator/interface/BasicHepMCHeavyIonValidation.h"

#include "CLHEP/Units/defs.h"
#include "CLHEP/Units/PhysicalConstants.h"

using namespace edm;

BasicHepMCHeavyIonValidation::BasicHepMCHeavyIonValidation(const edm::ParameterSet& iPSet): 
        _wmanager(iPSet),
        hepmcCollection_(iPSet.getParameter<edm::InputTag>("hepmcCollection"))
{    
        dbe = 0;
        dbe = edm::Service<DQMStore>().operator->();
        QWdebug_ = iPSet.getUntrackedParameter<bool>("QWdebug",false);
}

BasicHepMCHeavyIonValidation::~BasicHepMCHeavyIonValidation() {}

void BasicHepMCHeavyIonValidation::beginJob()
{
        if(dbe){
                dbe->setCurrentFolder("Generator/HeavyIon");

                // Number of analyzed events
                nEvt = dbe->book1D("nEvt", "n analyzed Events", 1, 0., 1.);

                Ncoll_hard = dbe->book1D("Ncoll_hard", "Ncoll_hard", 700, 0, 700);
                Npart_proj = dbe->book1D("Npart_proj", "Npart_proj", 250, 0, 250);
                Npart_targ = dbe->book1D("Npart_targ", "Npart_targ", 250, 0, 250);
                Ncoll = dbe->book1D("Ncoll", "Ncoll", 700, 0, 700);
                N_Nwounded_collisions = dbe->book1D("N_Nwounded_collisions", "N_Nwounded_collisions", 250, 0, 250);
                Nwounded_N_collisions = dbe->book1D("Nwounded_N_collisions", "Nwounded_N_collisions", 250, 0, 250);
                Nwounded_Nwounded_collisions = dbe->book1D("Nwounded_Nwounded_collisions", "Nwounded_Nwounded_collisions", 250, 0, 250);
                spectator_neutrons = dbe->book1D("spectator_neutrons", "spectator_neutrons", 250, 0, 250);
                spectator_protons = dbe->book1D("spectator_protons", "spectator_protons", 250, 0, 250);
                impact_parameter = dbe->book1D("impact_parameter", "impact_parameter", 50, 0, 50);
                event_plane_angle = dbe->book1D("event_plane_angle", "event_plane_angle", 200, -CLHEP::pi, CLHEP::pi);
                eccentricity = dbe->book1D("eccentricity", "eccentricity", 200, 0, 1.0);
                sigma_inel_NN = dbe->book1D("sigma_inel_NN", "sigma_inel_NN", 200, 0, 10.0);

        }
        return;
}

void BasicHepMCHeavyIonValidation::endJob(){return;}
void BasicHepMCHeavyIonValidation::beginRun(const edm::Run& iRun,const edm::EventSetup& iSetup)
{
        //iSetup.getData( fPDGTable );
        return;
}
void BasicHepMCHeavyIonValidation::endRun(const edm::Run& iRun,const edm::EventSetup& iSetup){return;}
void BasicHepMCHeavyIonValidation::analyze(const edm::Event& iEvent,const edm::EventSetup& iSetup)
{ 

        edm::Handle<HepMCProduct> evt;
        iEvent.getByLabel(hepmcCollection_, evt);

        //Get EVENT
        //HepMC::GenEvent *myGenEvent = new HepMC::GenEvent(*(evt->GetEvent()));



        const HepMC::HeavyIon* ion = evt->GetEvent()->heavy_ion();

        if (!ion) {
                if ( QWdebug_ ) std::cout << "!!QW!! HeavyIon == null" << std::endl;
                return;
        }

        double weight = _wmanager.weight(iEvent);
        nEvt->Fill(0.5,weight);

        Ncoll_hard->Fill(ion->Ncoll_hard(), weight);
        Npart_proj->Fill(ion->Npart_proj(), weight);
        Npart_targ->Fill(ion->Npart_targ(), weight);
        Ncoll->Fill(ion->Ncoll(), weight);
        N_Nwounded_collisions->Fill(ion->N_Nwounded_collisions(), weight);
        Nwounded_N_collisions->Fill(ion->Nwounded_N_collisions(), weight);
        Nwounded_Nwounded_collisions->Fill(ion->Nwounded_Nwounded_collisions(), weight);
        spectator_neutrons->Fill(ion->spectator_neutrons(), weight);
        spectator_protons->Fill(ion->spectator_protons(), weight);
        impact_parameter->Fill(ion->impact_parameter(), weight);
        event_plane_angle->Fill(ion->event_plane_angle(), weight);
        eccentricity->Fill(ion->eccentricity(), weight);
        sigma_inel_NN->Fill(ion->sigma_inel_NN(), weight);


        //delete myGenEvent;
}//analyze