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26 //
27 /// \file VG01PrimaryGeneratorAction.cc
28 /// \brief Implementation of the VG01PrimaryGe
29 //
30 // Authors: J. Apostolakis & S. Wenzel (CERN)
31 //
32 // Started from FullCMS code by Mihaly Novak
33
34 #include "VG01PrimaryGeneratorAction.hh"
35
36 #include "G4Event.hh"
37 #include "G4ParticleDefinition.hh"
38 #include "G4ParticleGun.hh"
39 #include "G4ParticleTable.hh"
40 #include "G4RandomDirection.hh"
41 #include "G4SystemOfUnits.hh"
42
43 //....oooOO0OOooo........oooOO0OOooo........oo
44
45 VG01PrimaryGeneratorAction::VG01PrimaryGenerat
46 : G4VUserPrimaryGeneratorAction(), fParticle
47 {
48 G4int n_particle = 1;
49 fParticleGun = new G4ParticleGun(n_particle)
50
51 G4ParticleTable* particleTable = G4ParticleT
52 G4String particleName;
53 fParticleGun->SetParticleDefinition(particle
54 fParticleGun->SetParticleEnergy(1.0 * GeV);
55 fParticleGun->SetParticlePosition(G4ThreeVec
56 }
57
58 //....oooOO0OOooo........oooOO0OOooo........oo
59
60 VG01PrimaryGeneratorAction::~VG01PrimaryGenera
61 {
62 delete fParticleGun;
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oo
66
67 void VG01PrimaryGeneratorAction::GeneratePrima
68 {
69 G4ThreeVector dir(1.0, 0.0, 0.0);
70
71 // G4ThreeVector FixedMode[3] =
72 // { G4ThreeVector(1,0,0), G4ThreeVector(1,
73 G4ThreeVector AxisModeVectors[3] = {G4ThreeV
74 G4ThreeV
75
76 if (fMode == kFreeMode) {
77 // Do not fix the direction
78 // -- UI commands to particle mode can c
79 fParticleGun->GeneratePrimaryVertex(anEven
80 return;
81 //----
82 }
83 else if (fMode == kFixedMode) {
84 G4int i = anEvent->GetEventID() % 3;
85 dir = G4ThreeVector(1.0, 0.0, 0.0);
86 switch (i) {
87 case 0:
88 break;
89 case 1:
90 dir.setY(0.1);
91 break;
92 case 2:
93 dir.setZ(0.1);
94 break;
95 }
96 }
97 else if (fMode == kUniformMode) {
98 dir = G4RandomDirection();
99 }
100 else if (fMode == kAxisMode) {
101 G4int i = anEvent->GetEventID() % 3;
102 dir = AxisModeVectors[i];
103 }
104
105 fParticleGun->SetParticleMomentumDirection(d
106 fParticleGun->GeneratePrimaryVertex(anEvent)
107 }
108