| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 //
27 /// \file B2/B2a/src/PrimaryGeneratorAction.cc
28 /// \brief Implementation of the B2::PrimaryGe
29
30 #include "PrimaryGeneratorAction.hh"
31
32 #include "G4Box.hh"
33 #include "G4LogicalVolume.hh"
34 #include "G4LogicalVolumeStore.hh"
35 #include "G4ParticleGun.hh"
36 #include "G4ParticleTable.hh"
37 #include "G4SystemOfUnits.hh"
38
39 namespace B2
40 {
41
42 //....oooOO0OOooo........oooOO0OOooo........oo
43
44 PrimaryGeneratorAction::PrimaryGeneratorAction
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 PrimaryGeneratorAction::~PrimaryGeneratorActio
62 {
63 delete fParticleGun;
64 }
65
66 //....oooOO0OOooo........oooOO0OOooo........oo
67
68 void PrimaryGeneratorAction::GeneratePrimaries
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 = nullptr;
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 // Starting a primary particle close to the
89 //
90 fParticleGun->SetParticlePosition(G4ThreeVec
91
92 fParticleGun->GeneratePrimaryVertex(event);
93 }
94
95 //....oooOO0OOooo........oooOO0OOooo........oo
96
97 } // namespace B2
98