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/// \file B1EventAction.cc
/// \brief Implementation of the B1EventAction class

#include "B1EventAction.hh"
#include "B1RunAction.hh"
#include "B1Hits.hh"
#include "B1DetectorConstruction.hh"
#include "G4SystemOfUnits.hh"
#include "G4HCofThisEvent.hh"
#include "G4VHitsCollection.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"
#include "G4Event.hh"
#include "G4RunManager.hh"

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B1EventAction::B1EventAction(B1RunAction* runAction)
: G4UserEventAction(),
  fRunAction(runAction),
  fEdep1(0.),
  fEdep2(0.)
{} 

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B1EventAction::~B1EventAction()
{}

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void B1EventAction::BeginOfEventAction(const G4Event*)
{    
  fEdep1 = 0.;
  fEdep2 = 0.;
}

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void B1EventAction::EndOfEventAction(const G4Event* event)
{   
  // accumulate statistics in run action
  fRunAction->AddEdep1(fEdep1);
  fRunAction->AddEdep2(fEdep2);

 static int CHCID = -1;
if (CHCID < 0) {
    CHCID = G4SDManager::GetSDMpointer()->GetCollectionID("SD");//Descobrir isso
  }



 // pega as collections ID's
 
 G4SDManager * SDman = G4SDManager::GetSDMpointer();
 G4HCofThisEvent* HCE = event->GetHCofThisEvent();
 
 B1HitsCollection* HitsCol = 0;


  if(HCE) {
    HitsCol = (B1HitsCollection*)(HCE->GetHC(CHCID));
  }

 
    int n_hit = HitsCol->entries();
     G4cout << "My detector has " << n_hit << "hits" << G4endl;
     B1Hits* hit = new B1Hits;
     std::map<const G4String, int> fparticles;

     double n_mu_p = 0.0;
     double n_mu_m = 0.0;
     G4double total_energy_mu_p = 0;
     G4double total_energy_mu_m = 0;

    const B1PrimaryGeneratorAction* generatorAction
   = static_cast<const B1PrimaryGeneratorAction*>
     (G4RunManager::GetRunManager()->GetUserPrimaryGeneratorAction());
 

   const G4ParticleGun* particleGun = generatorAction->GetParticleGun();


   G4double particleEnergy = particleGun->GetParticleEnergy();
     
     std::ofstream mu_p_pos("position_mu_p.csv",std::ios_base::app);
 
  std::ofstream mu_m_pos("position_mu_m.csv",std::ios_base::app);

     for(int i1 = 0; i1 < n_hit; i1++) {
      B1Hits* hit = (*HitsCol)[i1];
      const G4String name = hit->getParticleInTarget();
      G4cout << name << G4endl;
      if (name == "mu+" || name=="mu-") {
	 G4double energy = hit->getParticleEnergy();
         G4ThreeVector position = hit->getParticlePos();
	if (name == "mu+") {
	n_mu_p++;
        mu_p_pos << position.x()/(m) << "  " << position.y()/(m) << "\n";
 	total_energy_mu_p += energy;
	} else if (name=="mu-") {
        total_energy_mu_m += energy;
        mu_m_pos << position.x()/(m) << "  " << position.y()/(m) << "\n";
	n_mu_m++;

	}
    }
      
}

 mu_p_pos.close();
mu_m_pos.close();


 if(n_mu_p != 0.0) {
       G4double value = total_energy_mu_p/n_mu_p;
       G4cout << value/(GeV) << G4endl;
       fRunAction->AddE_mup(value);
    } else {fRunAction->AddE_mup(total_energy_mu_p);}
 
 if(n_mu_m != 0.0) {
       G4double value = total_energy_mu_m/n_mu_m;
       fRunAction->AddE_mup(value);
    } else {fRunAction->AddE_mum(total_energy_mu_m);}

} 


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