Par02PrimaryGeneratorAction Class Reference

Construction of a primary generation action. More...

#include <Doxymodules_parameterisations.h>

Inheritance diagram for Par02PrimaryGeneratorAction:

Public Member Functions
	Par02PrimaryGeneratorAction ()
	~Par02PrimaryGeneratorAction ()
virtual void	GeneratePrimaries (G4Event *anEvent)
G4ParticleGun *	GetParticleGun ()

Private Attributes
G4ParticleGun *	fParticleGun

Detailed Description

Construction of a primary generation action.

For simplicity, we use here the particle gun, but in the original application for FCC (developed by Anna Zaborowska), the Monte Carlo event generator Pythia8 is used as generator and it is interfaced to Geant4 via HepMC.

Definition at line 46 of file Doxymodules_parameterisations.h.

Constructor & Destructor Documentation

Par02PrimaryGeneratorAction()

Par02PrimaryGeneratorAction::Par02PrimaryGeneratorAction

(

)

Definition at line 41 of file Par02PrimaryGeneratorAction.cc.

                                                         {
  G4int n_particle = 1;
  fParticleGun = new G4ParticleGun( n_particle );
 
  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
  G4String particleName;
  G4ParticleDefinition* particle = 
    particleTable->FindParticle( particleName = "geantino" );
  fParticleGun->SetParticleDefinition( particle );
 
  fParticleGun->SetParticleMomentumDirection( G4ThreeVector( 0.0, 1.0, 0.0 ) );
  fParticleGun->SetParticleEnergy( 100.0*GeV );
  fParticleGun->SetParticlePosition( G4ThreeVector( 0.0, 0.0, 0.0 ) );
}

~Par02PrimaryGeneratorAction()

Par02PrimaryGeneratorAction::~Par02PrimaryGeneratorAction

(

)

Definition at line 58 of file Par02PrimaryGeneratorAction.cc.

                                                          {
  delete fParticleGun;
}

Member Function Documentation

GeneratePrimaries()

void Par02PrimaryGeneratorAction::GeneratePrimaries ( G4Event *  anEvent )

virtual

Definition at line 64 of file Par02PrimaryGeneratorAction.cc.

                                                                      {
  fParticleGun->GeneratePrimaryVertex( anEvent );
 
  // Loop over the vertices, and then over primary particles,
  // and for each primary particle create an info object, in
  // which to store "Monte Carlo true" information.
  // This approach could appear unnecessarily heavy in the present case
  // of a trivial particle gun generator, but it is useful in the more
  // realistic case of a Monte Carlo event generator like Pythia8.
  G4int count_particles = 0;
  for ( G4int ivtx = 0; ivtx < anEvent->GetNumberOfPrimaryVertex(); ivtx++ ) {
    for ( G4int ipp = 0; ipp < anEvent->GetPrimaryVertex( ivtx )->GetNumberOfParticle();
          ipp++ ) {
      G4PrimaryParticle* primary_particle = 
        anEvent->GetPrimaryVertex( ivtx )->GetPrimary( ipp );
      if ( primary_particle ) {
        primary_particle->SetUserInformation( new Par02PrimaryParticleInformation( 
          count_particles, primary_particle->GetPDGcode(), 
          primary_particle->GetMomentum() ) );
        count_particles++;              
      }
    } 
  }
}

GetParticleGun()

G4ParticleGun * Par02PrimaryGeneratorAction::GetParticleGun

(

)

Definition at line 91 of file Par02PrimaryGeneratorAction.cc.

                                                           {
  return fParticleGun;
} 

Member Data Documentation

fParticleGun

G4ParticleGun* Par02PrimaryGeneratorAction::fParticleGun

private

Definition at line 54 of file Par02PrimaryGeneratorAction.hh.

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The documentation for this class was generated from the following files:

• .doxygen/Doxymodules_parameterisations.h
• extended/parameterisations/Par02/include/Par02PrimaryGeneratorAction.hh
• extended/parameterisations/Par02/src/Par02PrimaryGeneratorAction.cc