#include <B1PrimaryGeneratorAction.hh>

Inheritance diagram for B1PrimaryGeneratorAction:

Collaboration diagram for B1PrimaryGeneratorAction:

Public Member Functions
	B1PrimaryGeneratorAction ()

virtual	~B1PrimaryGeneratorAction ()

virtual void	GeneratePrimaries (G4Event *)

const G4ParticleGun *	GetParticleGun () const

	B1PrimaryGeneratorAction ()

virtual	~B1PrimaryGeneratorAction ()

virtual void	GeneratePrimaries (G4Event *)

const G4ParticleGun *	GetParticleGun () const

	B1PrimaryGeneratorAction ()

virtual	~B1PrimaryGeneratorAction ()

virtual void	GeneratePrimaries (G4Event *)

const G4ParticleGun *	GetParticleGun () const

Public Member Functions inherited from G4VUserPrimaryGeneratorAction
	G4VUserPrimaryGeneratorAction ()

virtual	~G4VUserPrimaryGeneratorAction ()

Private Attributes
G4ParticleGun *	fParticleGun

G4Box *	fEnvelopeBox

Detailed Description

The primary generator action class with particle gun.

The default kinematic is a 6 MeV gamma, randomly distribued in front of the phantom across 80% of the (X,Y) phantom size.

Definition at line 47 of file basic/B1/include/B1PrimaryGeneratorAction.hh.

Constructor & Destructor Documentation

◆ B1PrimaryGeneratorAction() [1/3]

B1PrimaryGeneratorAction::B1PrimaryGeneratorAction ( )

Definition at line 45 of file basic/B1/src/B1PrimaryGeneratorAction.cc.

 : G4VUserPrimaryGeneratorAction(),
   fParticleGun(0), 
   fEnvelopeBox(0)
 {
   G4int n_particle = 1;
   fParticleGun  = new G4ParticleGun(n_particle);
 
   // default particle kinematic
   G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
   G4String particleName;
   G4ParticleDefinition* particle
     = particleTable->FindParticle(particleName="gamma");
   fParticleGun->SetParticleDefinition(particle);
   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
   fParticleGun->SetParticleEnergy(6.*MeV);
 }

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◆ ~B1PrimaryGeneratorAction() [1/3]

B1PrimaryGeneratorAction::~B1PrimaryGeneratorAction ( )

virtual

Definition at line 65 of file basic/B1/src/B1PrimaryGeneratorAction.cc.

 {
   delete fParticleGun;
 }

◆ B1PrimaryGeneratorAction() [2/3]

B1PrimaryGeneratorAction::B1PrimaryGeneratorAction ( )

◆ ~B1PrimaryGeneratorAction() [2/3]

virtual B1PrimaryGeneratorAction::~B1PrimaryGeneratorAction ( )

virtual

◆ B1PrimaryGeneratorAction() [3/3]

B1PrimaryGeneratorAction::B1PrimaryGeneratorAction ( )

◆ ~B1PrimaryGeneratorAction() [3/3]

virtual B1PrimaryGeneratorAction::~B1PrimaryGeneratorAction ( )

virtual

Member Function Documentation

◆ GeneratePrimaries() [1/3]

void B1PrimaryGeneratorAction::GeneratePrimaries ( G4Event * anEvent )

virtual

Implements G4VUserPrimaryGeneratorAction.

Definition at line 72 of file basic/B1/src/B1PrimaryGeneratorAction.cc.

 {
   //this function is called at the begining of ecah event
   //
 
   // In order to avoid dependence of PrimaryGeneratorAction
   // on DetectorConstruction class we get Envelope volume
   // from G4LogicalVolumeStore.
   
   G4double envSizeXY = 0;
   G4double envSizeZ = 0;
 
   if (!fEnvelopeBox)
   {
     G4LogicalVolume* envLV
       = G4LogicalVolumeStore::GetInstance()->GetVolume("Envelope");
     if ( envLV ) fEnvelopeBox = dynamic_cast<G4Box*>(envLV->GetSolid());
   }
 
   if ( fEnvelopeBox ) {
     envSizeXY = fEnvelopeBox->GetXHalfLength()*2.;
     envSizeZ = fEnvelopeBox->GetZHalfLength()*2.;
   }  
   else  {
     G4ExceptionDescription msg;
     msg << "Envelope volume of box shape not found.\n"; 
     msg << "Perhaps you have changed geometry.\n";
     msg << "The gun will be place at the center.";
     G4Exception("B1PrimaryGeneratorAction::GeneratePrimaries()",
      "MyCode0002",JustWarning,msg);
   }
 
   G4double size = 0.8; 
   G4double x0 = size * envSizeXY * (G4UniformRand()-0.5);
   G4double y0 = size * envSizeXY * (G4UniformRand()-0.5);
   G4double z0 = -0.5 * envSizeZ;
   
   fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
 
   fParticleGun->GeneratePrimaryVertex(anEvent);
 }