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26 /// \file electromagnetic/TestEm4/src/PrimaryG 26 /// \file electromagnetic/TestEm4/src/PrimaryGeneratorAction.cc
27 /// \brief Implementation of the PrimaryGenera 27 /// \brief Implementation of the PrimaryGeneratorAction class
28 // 28 //
29 // 29 //
>> 30 //
>> 31 //
>> 32
30 //....oooOO0OOooo........oooOO0OOooo........oo 33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oo 34 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 35
33 #include "PrimaryGeneratorAction.hh" 36 #include "PrimaryGeneratorAction.hh"
34 37
35 #include "G4Event.hh" 38 #include "G4Event.hh"
36 #include "G4ParticleDefinition.hh" <<
37 #include "G4ParticleGun.hh" 39 #include "G4ParticleGun.hh"
38 #include "G4ParticleTable.hh" 40 #include "G4ParticleTable.hh"
>> 41 #include "G4ParticleDefinition.hh"
39 #include "G4PhysicalConstants.hh" 42 #include "G4PhysicalConstants.hh"
40 #include "G4SystemOfUnits.hh" 43 #include "G4SystemOfUnits.hh"
41 #include "Randomize.hh" 44 #include "Randomize.hh"
42 45
43 //....oooOO0OOooo........oooOO0OOooo........oo 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 47
45 PrimaryGeneratorAction::PrimaryGeneratorAction 48 PrimaryGeneratorAction::PrimaryGeneratorAction()
>> 49 : G4VUserPrimaryGeneratorAction(),fParticleGun(0)
46 { 50 {
47 G4int n_particle = 1; 51 G4int n_particle = 1;
48 fParticleGun = new G4ParticleGun(n_particle) << 52 fParticleGun = new G4ParticleGun(n_particle);
49 << 53
50 // default particle kinematic 54 // default particle kinematic
51 55
52 G4ParticleDefinition* particle = G4ParticleT << 56 G4ParticleDefinition* particle
>> 57 = G4ParticleTable::GetParticleTable()->FindParticle("gamma");
53 fParticleGun->SetParticleDefinition(particle 58 fParticleGun->SetParticleDefinition(particle);
54 fParticleGun->SetParticleMomentumDirection(G << 59 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
55 fParticleGun->SetParticleEnergy(9 * MeV); << 60 fParticleGun->SetParticleEnergy(9*MeV);
56 fParticleGun->SetParticlePosition(G4ThreeVec << 61 fParticleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm));
>> 62
57 } 63 }
58 64
59 //....oooOO0OOooo........oooOO0OOooo........oo 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 66
61 PrimaryGeneratorAction::~PrimaryGeneratorActio 67 PrimaryGeneratorAction::~PrimaryGeneratorAction()
62 { 68 {
63 delete fParticleGun; 69 delete fParticleGun;
64 } 70 }
65 71
66 //....oooOO0OOooo........oooOO0OOooo........oo 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 73
68 void PrimaryGeneratorAction::GeneratePrimaries 74 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
69 { 75 {
70 // this function is called at the begining o << 76 //this function is called at the begining of event
71 // 77 //
72 // distribution uniform in solid angle << 78 //distribution uniform in solid angle
73 // 79 //
74 G4double cosTheta = 2 * G4UniformRand() - 1. << 80 G4double cosTheta = 2*G4UniformRand() - 1., phi = twopi*G4UniformRand();
75 G4double sinTheta = std::sqrt(1. - cosTheta << 81 G4double sinTheta = std::sqrt(1. - cosTheta*cosTheta);
76 G4double ux = sinTheta * std::cos(phi), uy = << 82 G4double ux = sinTheta*std::cos(phi),
77 << 83 uy = sinTheta*std::sin(phi),
78 fParticleGun->SetParticleMomentumDirection(G << 84 uz = cosTheta;
79 85
>> 86 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(ux,uy,uz));
>> 87
80 fParticleGun->GeneratePrimaryVertex(anEvent) 88 fParticleGun->GeneratePrimaryVertex(anEvent);
81 } 89 }
82 90
83 //....oooOO0OOooo........oooOO0OOooo........oo 91 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 92
84 93