Geant4  9.6.p02
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ExP01PrimaryGeneratorAction.cc
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29 //
30 // $Id$
31 //
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37 
38 #include "G4Event.hh"
39 #include "G4ParticleGun.hh"
40 #include "G4ParticleTable.hh"
41 #include "G4ParticleDefinition.hh"
42 #include "globals.hh"
43 #include "G4SystemOfUnits.hh"
44 
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49 :myDetector(myDC)
50 {
51  G4int n_particle = 1;
52  particleGun = new G4ParticleGun(n_particle);
53 
54 // default particle
55 
57  G4ParticleDefinition* particle = particleTable->FindParticle("proton");
58 
59  particleGun->SetParticleDefinition(particle);
60  particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
61  particleGun->SetParticleEnergy(3.0*GeV);
62 }
63 
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67 {
68  delete particleGun;
69 }
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74 {
75  G4double position = -0.5*(myDetector->GetWorldFullLength());
76  particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position));
77 
78  particleGun->GeneratePrimaryVertex(anEvent);
79 }
80 
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