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25 // 25 //
26 /// \file electromagnetic/TestEm4/src/PrimaryG <<
27 /// \brief Implementation of the PrimaryGenera <<
28 // 26 //
>> 27 // $Id: PrimaryGeneratorAction.cc,v 1.3 2006/06/29 16:54:19 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-08-03-patch-01 $
29 // 29 //
>> 30 //
>> 31
30 //....oooOO0OOooo........oooOO0OOooo........oo 32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oo 33 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 34
33 #include "PrimaryGeneratorAction.hh" 35 #include "PrimaryGeneratorAction.hh"
34 36
35 #include "G4Event.hh" 37 #include "G4Event.hh"
36 #include "G4ParticleDefinition.hh" <<
37 #include "G4ParticleGun.hh" 38 #include "G4ParticleGun.hh"
38 #include "G4ParticleTable.hh" 39 #include "G4ParticleTable.hh"
39 #include "G4PhysicalConstants.hh" << 40 #include "G4ParticleDefinition.hh"
40 #include "G4SystemOfUnits.hh" <<
41 #include "Randomize.hh" 41 #include "Randomize.hh"
42 42
43 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 44
45 PrimaryGeneratorAction::PrimaryGeneratorAction 45 PrimaryGeneratorAction::PrimaryGeneratorAction()
46 { 46 {
47 G4int n_particle = 1; 47 G4int n_particle = 1;
48 fParticleGun = new G4ParticleGun(n_particle) << 48 particleGun = new G4ParticleGun(n_particle);
49 << 49
50 // default particle kinematic 50 // default particle kinematic
51 51
52 G4ParticleDefinition* particle = G4ParticleT << 52 G4ParticleDefinition* particle
53 fParticleGun->SetParticleDefinition(particle << 53 = G4ParticleTable::GetParticleTable()->FindParticle("gamma");
54 fParticleGun->SetParticleMomentumDirection(G << 54 particleGun->SetParticleDefinition(particle);
55 fParticleGun->SetParticleEnergy(9 * MeV); << 55 particleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.));
56 fParticleGun->SetParticlePosition(G4ThreeVec << 56 particleGun->SetParticleEnergy(9*MeV);
>> 57 particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm));
>> 58
57 } 59 }
58 60
59 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60 62
61 PrimaryGeneratorAction::~PrimaryGeneratorActio 63 PrimaryGeneratorAction::~PrimaryGeneratorAction()
62 { 64 {
63 delete fParticleGun; << 65 delete particleGun;
64 } 66 }
65 67
66 //....oooOO0OOooo........oooOO0OOooo........oo 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 69
68 void PrimaryGeneratorAction::GeneratePrimaries 70 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
69 { 71 {
70 // this function is called at the begining o << 72 //this function is called at the begining of event
71 // 73 //
72 // distribution uniform in solid angle << 74 //distribution uniform in solid angle
73 // 75 //
74 G4double cosTheta = 2 * G4UniformRand() - 1. << 76 G4double cosTheta = 2*G4UniformRand() - 1., phi = twopi*G4UniformRand();
75 G4double sinTheta = std::sqrt(1. - cosTheta << 77 G4double sinTheta = std::sqrt(1. - cosTheta*cosTheta);
76 G4double ux = sinTheta * std::cos(phi), uy = << 78 G4double ux = sinTheta*std::cos(phi),
77 << 79 uy = sinTheta*std::sin(phi),
78 fParticleGun->SetParticleMomentumDirection(G << 80 uz = cosTheta;
79 << 81
80 fParticleGun->GeneratePrimaryVertex(anEvent) << 82 particleGun->SetParticleMomentumDirection(G4ThreeVector(ux,uy,uz));
>> 83
>> 84 particleGun->GeneratePrimaryVertex(anEvent);
81 } 85 }
82 86
83 //....oooOO0OOooo........oooOO0OOooo........oo 87 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 88
84 89