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26 // 26 //
27 /// \file B2/B2b/src/PrimaryGeneratorAction.cc 27 /// \file B2/B2b/src/PrimaryGeneratorAction.cc
28 /// \brief Implementation of the B2::PrimaryGe 28 /// \brief Implementation of the B2::PrimaryGeneratorAction class
29 29
30 #include "PrimaryGeneratorAction.hh" 30 #include "PrimaryGeneratorAction.hh"
31 31
32 #include "G4Box.hh" <<
33 #include "G4LogicalVolume.hh" <<
34 #include "G4LogicalVolumeStore.hh" 32 #include "G4LogicalVolumeStore.hh"
>> 33 #include "G4LogicalVolume.hh"
>> 34 #include "G4Box.hh"
>> 35 #include "G4Event.hh"
35 #include "G4ParticleGun.hh" 36 #include "G4ParticleGun.hh"
36 #include "G4ParticleTable.hh" 37 #include "G4ParticleTable.hh"
>> 38 #include "G4ParticleDefinition.hh"
37 #include "G4SystemOfUnits.hh" 39 #include "G4SystemOfUnits.hh"
38 #include "globals.hh" << 40 #include "Randomize.hh"
39 41
40 namespace B2 42 namespace B2
41 { 43 {
42 44
43 //....oooOO0OOooo........oooOO0OOooo........oo 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 46
45 PrimaryGeneratorAction::PrimaryGeneratorAction 47 PrimaryGeneratorAction::PrimaryGeneratorAction()
46 { 48 {
47 G4int nofParticles = 1; 49 G4int nofParticles = 1;
48 fParticleGun = new G4ParticleGun(nofParticle 50 fParticleGun = new G4ParticleGun(nofParticles);
49 51
50 // default particle kinematic 52 // default particle kinematic
51 53
52 G4ParticleDefinition* particleDefinition = << 54 G4ParticleDefinition* particleDefinition
53 G4ParticleTable::GetParticleTable()->FindP << 55 = G4ParticleTable::GetParticleTable()->FindParticle("proton");
54 56
55 fParticleGun->SetParticleDefinition(particle 57 fParticleGun->SetParticleDefinition(particleDefinition);
56 fParticleGun->SetParticleMomentumDirection(G << 58 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
57 fParticleGun->SetParticleEnergy(3.0 * GeV); << 59 fParticleGun->SetParticleEnergy(3.0*GeV);
58 } 60 }
59 61
60 //....oooOO0OOooo........oooOO0OOooo........oo 62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61 63
62 PrimaryGeneratorAction::~PrimaryGeneratorActio 64 PrimaryGeneratorAction::~PrimaryGeneratorAction()
63 { 65 {
64 delete fParticleGun; 66 delete fParticleGun;
65 } 67 }
66 68
67 //....oooOO0OOooo........oooOO0OOooo........oo 69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 70
69 void PrimaryGeneratorAction::GeneratePrimaries << 71 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
70 { 72 {
71 // This function is called at the begining o 73 // This function is called at the begining of event
72 74
73 // In order to avoid dependence of PrimaryGe 75 // In order to avoid dependence of PrimaryGeneratorAction
74 // on DetectorConstruction class we get worl 76 // on DetectorConstruction class we get world volume
75 // from G4LogicalVolumeStore. 77 // from G4LogicalVolumeStore.
76 78
77 G4double worldZHalfLength = 0; 79 G4double worldZHalfLength = 0;
78 G4LogicalVolume* worldLV = G4LogicalVolumeSt << 80 G4LogicalVolume* worldLV
>> 81 = G4LogicalVolumeStore::GetInstance()->GetVolume("World");
79 G4Box* worldBox = nullptr; 82 G4Box* worldBox = nullptr;
80 if (worldLV) worldBox = dynamic_cast<G4Box*> << 83 if ( worldLV ) worldBox = dynamic_cast<G4Box*>(worldLV->GetSolid());
81 if (worldBox) << 84 if ( worldBox ) worldZHalfLength = worldBox->GetZHalfLength();
82 worldZHalfLength = worldBox->GetZHalfLengt << 85 else {
83 else { <<
84 G4cerr << "World volume of box not found." 86 G4cerr << "World volume of box not found." << G4endl;
85 G4cerr << "Perhaps you have changed geomet 87 G4cerr << "Perhaps you have changed geometry." << G4endl;
86 G4cerr << "The gun will be place in the ce 88 G4cerr << "The gun will be place in the center." << G4endl;
87 } 89 }
88 90
89 // Starting a primary particle close to the 91 // Starting a primary particle close to the world boundary.
90 // 92 //
91 fParticleGun->SetParticlePosition(G4ThreeVec << 93 fParticleGun->SetParticlePosition(G4ThreeVector(0., 0., -worldZHalfLength+1*um));
92 94
93 fParticleGun->GeneratePrimaryVertex(event); << 95 fParticleGun->GeneratePrimaryVertex(anEvent);
94 } 96 }
95 97
96 //....oooOO0OOooo........oooOO0OOooo........oo 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
97 99
98 } // namespace B2 << 100 }
>> 101
99 102