Geant4 LXR

Cross-Referencing   Geant4
Geant4/examples/extended/radioactivedecay/rdecay01/src/TrackingAction.cc

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  //
  /// \file TrackingAction.cc
  /// \brief Implementation of the TrackingAction class
  //
  //
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  #include "TrackingAction.hh"
  
  #include "EventAction.hh"
  #include "HistoManager.hh"
  #include "Run.hh"
  #include "TrackingMessenger.hh"
  
  #include "G4IonTable.hh"
  #include "G4ParticleTypes.hh"
  #include "G4RunManager.hh"
  #include "G4SystemOfUnits.hh"
  #include "G4Track.hh"
  #include "G4UnitsTable.hh"
  
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  TrackingAction::TrackingAction(EventAction* event) : fEvent(event)
  
  {
    fTrackMessenger = new TrackingMessenger(this);
  }
  
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  TrackingAction::~TrackingAction()
  {
    delete fTrackMessenger;
  }
  
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  void TrackingAction::SetTimeWindow(G4double t1, G4double dt)
  {
    fTimeWindow1 = t1;
    fTimeWindow2 = fTimeWindow1 + dt;
  }
  
  //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
  
  void TrackingAction::PreUserTrackingAction(const G4Track* track)
  {
    Run* run = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());
  
    G4ParticleDefinition* particle = track->GetDefinition();
    G4String name = particle->GetParticleName();
    fCharge = particle->GetPDGCharge();
    fMass = particle->GetPDGMass();
  
    G4double Ekin = track->GetKineticEnergy();
    G4int ID = track->GetTrackID();
  
    G4bool condition = false;
  
    // check LifeTime
    //
    G4double meanLife = particle->GetPDGLifeTime();
  
    // count particles
    //
    run->ParticleCount(name, Ekin, meanLife);
  
    // energy spectrum
    //
    G4int ih = 0;
    if (particle == G4Electron::Electron() || particle == G4Positron::Positron())
      ih = 1;
    else if (particle == G4NeutrinoE::NeutrinoE() || particle == G4AntiNeutrinoE::AntiNeutrinoE())
     ih = 2;
   else if (particle == G4Gamma::Gamma())
     ih = 3;
   else if (particle == G4Alpha::Alpha())
     ih = 4;
   else if (fCharge > 2.)
     ih = 5;
   if (ih) G4AnalysisManager::Instance()->FillH1(ih, Ekin);
 
   // Ion
   //
   if (fCharge > 2.) {
     // build decay chain
     if (ID == 1)
       fEvent->AddDecayChain(name);
     else
       fEvent->AddDecayChain(" ---> " + name);
     //
     // full chain: put at rest; if not: kill secondary
     G4Track* tr = (G4Track*)track;
     if (fFullChain) {
       tr->SetKineticEnergy(0.);
       tr->SetTrackStatus(fStopButAlive);
     }
     else if (ID > 1)
       tr->SetTrackStatus(fStopAndKill);
     //
     fTimeBirth = track->GetGlobalTime();
   }
 
   // example of saving random number seed of this fEvent, under condition
   //
   ////condition = (ih == 3);
   if (condition) G4RunManager::GetRunManager()->rndmSaveThisEvent();
 }
 
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
 void TrackingAction::PostUserTrackingAction(const G4Track* track)
 {
   // keep only ions
   //
   if (fCharge < 3.) return;
 
   Run* run = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());
 
   G4AnalysisManager* analysis = G4AnalysisManager::Instance();
 
   // get time
   //
   G4double time = track->GetGlobalTime();
   G4int ID = track->GetTrackID();
   if (ID == 1) run->PrimaryTiming(time);  // time of life of primary ion
   fTimeEnd = time;
 
   // energy and momentum balance (from secondaries)
   //
   const std::vector<const G4Track*>* secondaries = track->GetStep()->GetSecondaryInCurrentStep();
   size_t nbtrk = (*secondaries).size();
   if (nbtrk) {
     // there are secondaries --> it is a decay
     //
     // balance
     G4double EkinTot = 0., EkinVis = 0.;
     G4ThreeVector Pbalance = -track->GetMomentum();
     for (size_t itr = 0; itr < nbtrk; itr++) {
       const G4Track* trk = (*secondaries)[itr];
       G4ParticleDefinition* particle = trk->GetDefinition();
       G4double Ekin = trk->GetKineticEnergy();
       EkinTot += Ekin;
       G4bool visible =
         !((particle == G4NeutrinoE::NeutrinoE()) || (particle == G4AntiNeutrinoE::AntiNeutrinoE()));
       if (visible) EkinVis += Ekin;
       // exclude gamma desexcitation from momentum balance
       if (particle != G4Gamma::Gamma()) Pbalance += trk->GetMomentum();
     }
     G4double Pbal = Pbalance.mag();
     run->Balance(EkinTot, Pbal);
     analysis->FillH1(6, EkinTot);
     analysis->FillH1(7, Pbal);
     fEvent->AddEvisible(EkinVis);
   }
 
   // no secondaries --> end of chain
   //
   if (!nbtrk) {
     run->EventTiming(time);  // total time of life
     G4double weight = track->GetWeight();
     analysis->FillH1(8, time, weight);
     ////    analysis->FillH1(8,time);
     fTimeEnd = DBL_MAX;
   }
 
   // count activity in time window
   //
   run->SetTimeWindow(fTimeWindow1, fTimeWindow2);
 
   G4String name = track->GetDefinition()->GetParticleName();
   G4bool life1(false), life2(false), decay(false);
   if ((fTimeBirth <= fTimeWindow1) && (fTimeEnd > fTimeWindow1)) life1 = true;
   if ((fTimeBirth <= fTimeWindow2) && (fTimeEnd > fTimeWindow2)) life2 = true;
   if ((fTimeEnd > fTimeWindow1) && (fTimeEnd < fTimeWindow2)) decay = true;
   if (life1 || life2 || decay) run->CountInTimeWindow(name, life1, life2, decay);
 }
 
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