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1 // 1
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24 // *******************************************
25 //
26 //
27 /// \file B2PrimaryGeneratorAction.cc
28 /// \brief Implementation of the B2PrimaryGene
29
30 #include "B2PrimaryGeneratorAction.hh"
31
32 #include "G4Box.hh"
33 #include "G4Event.hh"
34 #include "G4LogicalVolume.hh"
35 #include "G4LogicalVolumeStore.hh"
36 #include "G4ParticleDefinition.hh"
37 #include "G4ParticleGun.hh"
38 #include "G4ParticleTable.hh"
39 #include "G4SystemOfUnits.hh"
40 #include "Randomize.hh"
41
42 //....oooOO0OOooo........oooOO0OOooo........oo
43
44 B2PrimaryGeneratorAction::B2PrimaryGeneratorAc
45 {
46 G4int nofParticles = 1;
47 fParticleGun = new G4ParticleGun(nofParticle
48
49 // default particle kinematic
50
51 G4ParticleDefinition* particleDefinition =
52 G4ParticleTable::GetParticleTable()->FindP
53
54 fParticleGun->SetParticleDefinition(particle
55 fParticleGun->SetParticleMomentumDirection(G
56 fParticleGun->SetParticleEnergy(3.0 * GeV);
57 }
58
59 //....oooOO0OOooo........oooOO0OOooo........oo
60
61 B2PrimaryGeneratorAction::~B2PrimaryGeneratorA
62 {
63 delete fParticleGun;
64 }
65
66 //....oooOO0OOooo........oooOO0OOooo........oo
67
68 void B2PrimaryGeneratorAction::GeneratePrimari
69 {
70 // This function is called at the begining o
71
72 // In order to avoid dependence of PrimaryGe
73 // on DetectorConstruction class we get worl
74 // from G4LogicalVolumeStore.
75
76 G4double worldZHalfLength = 0;
77 G4LogicalVolume* worldLV = G4LogicalVolumeSt
78 G4Box* worldBox = NULL;
79 if (worldLV) worldBox = dynamic_cast<G4Box*>
80 if (worldBox)
81 worldZHalfLength = worldBox->GetZHalfLengt
82 else {
83 G4cerr << "World volume of box not found."
84 G4cerr << "Perhaps you have changed geomet
85 G4cerr << "The gun will be place in the ce
86 }
87
88 fParticleGun->SetParticlePosition(G4ThreeVec
89
90 fParticleGun->GeneratePrimaryVertex(anEvent)
91 }
92
93 //....oooOO0OOooo........oooOO0OOooo........oo
94