| Geant4 Cross Reference |
1 // 1
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23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 //....oooOO0OOooo........oooOO0OOooo........oo
28 //....oooOO0OOooo........oooOO0OOooo........oo
29
30 #include "PrimaryGeneratorAction.hh"
31
32 #include "PrimaryGeneratorMessenger.hh"
33 #include "DetectorConstruction.hh"
34
35 #include "G4SystemOfUnits.hh"
36 #include "G4Event.hh"
37 #include "G4ParticleGun.hh"
38 #include "G4ParticleTable.hh"
39 #include "G4ParticleDefinition.hh"
40 #include "Randomize.hh"
41
42 //....oooOO0OOooo........oooOO0OOooo........oo
43
44 PrimaryGeneratorAction::PrimaryGeneratorAction
45 :Detector(det)
46 {
47 G4int n_particle = 1;
48 particleGun = new G4ParticleGun(n_particle)
49 SetDefaultKinematic();
50 beam = 0.*mm;
51
52 //create a messenger for this class
53 gunMessenger = new PrimaryGeneratorMessenger
54 }
55
56 //....oooOO0OOooo........oooOO0OOooo........oo
57
58 PrimaryGeneratorAction::~PrimaryGeneratorActio
59 {
60 delete particleGun;
61 delete gunMessenger;
62 }
63
64 //....oooOO0OOooo........oooOO0OOooo........oo
65
66 void PrimaryGeneratorAction::SetDefaultKinemat
67 {
68 G4ParticleTable* particleTable = G4ParticleT
69 G4String particleName;
70 G4ParticleDefinition* particle
71 = particleTable->FindParti
72 particleGun->SetParticleDefinition(particle)
73 particleGun->SetParticleMomentumDirection(G4
74 particleGun->SetParticleEnergy(1.*GeV);
75 G4double position = -0.5*(Detector->GetWorld
76 particleGun->SetParticlePosition(G4ThreeVect
77 }
78
79 //....oooOO0OOooo........oooOO0OOooo........oo
80
81 void PrimaryGeneratorAction::GeneratePrimaries
82 {
83 //this function is called at the begining of
84 //
85 //randomize beam, if requested.
86 //
87 if (beam > 0.)
88 {
89 G4ThreeVector position = particleGun->Ge
90 G4double maxYZ = 0.49*(Detector->GetCalo
91 G4double x0 = position.x();
92 G4double y0 = position.y() + (G4UniformR
93 G4double z0 = position.z() + (G4UniformR
94 if (std::abs(y0) > maxYZ) y0 = maxYZ;
95 if (std::abs(z0) > maxYZ) z0 = maxYZ;
96 particleGun->SetParticlePosition(G4Three
97 particleGun->GeneratePrimaryVertex(anEve
98 particleGun->SetParticlePosition(positio
99 }
100 else particleGun->GeneratePrimaryVertex(anE
101 }
102
103 //....oooOO0OOooo........oooOO0OOooo........oo
104
105