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PrimaryGeneratorAction.cc
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26 // This example is provided by the Geant4-DNA collaboration
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29 // Med. Phys. 37 (2010) 4692-4708
30 // J. Comput. Phys. 274 (2014) 841-882
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36 
37 #include "PrimaryGeneratorAction.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "G4ParticleTable.hh"
40 #include "G4ParticleGun.hh"
41 
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 
44 PrimaryGeneratorAction::PrimaryGeneratorAction() :
45  G4VUserPrimaryGeneratorAction(),
46  fpParticleGun(new G4ParticleGun(1))
47 {
48  G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
49  G4ParticleDefinition* particle = particleTable->FindParticle("proton");
50 
51  // default gun parameters
52  fpParticleGun->SetParticleDefinition(particle);
53  fpParticleGun->SetParticleEnergy(30.*MeV);
54  fpParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
55  fpParticleGun->SetParticlePosition(G4ThreeVector(0.,0.,0.*micrometer));
56 }
57 
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59 
60 PrimaryGeneratorAction::~PrimaryGeneratorAction()
61 {
62  delete fpParticleGun;
63 }
64 
65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66 
67 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
68 {
69  fpParticleGun->GeneratePrimaryVertex(anEvent);
70 }