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25 // 25 //
26 /// \file medical/fanoCavity/src/PrimaryGenera 26 /// \file medical/fanoCavity/src/PrimaryGeneratorAction.cc
27 /// \brief Implementation of the PrimaryGenera 27 /// \brief Implementation of the PrimaryGeneratorAction class
28 // 28 //
>> 29 // $Id$
29 // 30 //
30 //....oooOO0OOooo........oooOO0OOooo........oo 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oo 32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 33
33 #include "PrimaryGeneratorAction.hh" 34 #include "PrimaryGeneratorAction.hh"
34 35
35 #include "DetectorConstruction.hh" 36 #include "DetectorConstruction.hh"
36 #include "PrimaryGeneratorMessenger.hh" 37 #include "PrimaryGeneratorMessenger.hh"
37 38
38 #include "G4Event.hh" 39 #include "G4Event.hh"
39 #include "G4ParticleDefinition.hh" <<
40 #include "G4ParticleGun.hh" 40 #include "G4ParticleGun.hh"
41 #include "G4ParticleTable.hh" 41 #include "G4ParticleTable.hh"
>> 42 #include "G4ParticleDefinition.hh"
42 #include "G4PhysicalConstants.hh" 43 #include "G4PhysicalConstants.hh"
43 #include "G4SystemOfUnits.hh" 44 #include "G4SystemOfUnits.hh"
44 #include "Randomize.hh" 45 #include "Randomize.hh"
45 46
46 //....oooOO0OOooo........oooOO0OOooo........oo 47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47 48
48 PrimaryGeneratorAction::PrimaryGeneratorAction 49 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* det)
49 : fParticleGun(0), fDetector(det), fGunMesse << 50 :fDetector(det)
50 { 51 {
51 fParticleGun = new G4ParticleGun(1); << 52 fParticleGun = new G4ParticleGun(1);
52 G4ParticleDefinition* particle = G4ParticleT << 53 G4ParticleDefinition* particle
>> 54 = G4ParticleTable::GetParticleTable()->FindParticle("gamma");
53 fParticleGun->SetParticleDefinition(particle 55 fParticleGun->SetParticleDefinition(particle);
54 fParticleGun->SetParticleEnergy(1.25 * MeV); << 56 fParticleGun->SetParticleEnergy(1.25*MeV);
55 fParticleGun->SetParticleMomentumDirection(G << 57 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
56 << 58
57 fRBeam = 1.; << 59 fRBeam = 1.;
58 << 60
59 // create a messenger for this class << 61 //create a messenger for this class
60 fGunMessenger = new PrimaryGeneratorMessenge << 62 fGunMessenger = new PrimaryGeneratorMessenger(this);
61 } 63 }
62 64
63 //....oooOO0OOooo........oooOO0OOooo........oo 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64 66
65 PrimaryGeneratorAction::~PrimaryGeneratorActio 67 PrimaryGeneratorAction::~PrimaryGeneratorAction()
66 { 68 {
67 delete fParticleGun; 69 delete fParticleGun;
68 delete fGunMessenger; << 70 delete fGunMessenger;
69 } 71 }
70 72
71 //....oooOO0OOooo........oooOO0OOooo........oo 73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
72 74
73 void PrimaryGeneratorAction::GeneratePrimaries 75 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
74 { 76 {
75 // this function is called at the begining o << 77 //this function is called at the begining of event
76 // 78 //
77 G4double z0 = -0.5 * (fDetector->GetTotalThi << 79 G4double z0 = -0.5*(fDetector->GetTotalThickness());
78 G4double x0 = 0. * cm, y0 = 0. * cm; << 80 G4double x0 = 0.*cm, y0 = 0.*cm;
79 << 81
80 // beam width << 82 //beam width
81 // 83 //
82 if (fRBeam > 0.) { << 84 if (fRBeam > 0.)
83 G4double beam = fRBeam * (fDetector->GetWa << 85 {
84 G4double r = beam * std::sqrt(G4UniformRan << 86 G4double beam = fRBeam*(fDetector->GetWallRadius());
85 G4double theta = twopi * G4UniformRand(); << 87 G4double r = beam*std::sqrt(G4UniformRand());
86 x0 = r * std::cos(theta); << 88 G4double theta = twopi*G4UniformRand();
87 y0 = r * std::sin(theta); << 89 x0 = r*std::cos(theta);
88 } << 90 y0 = r*std::sin(theta);
89 fParticleGun->SetParticlePosition(G4ThreeVec << 91 }
>> 92 fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
90 fParticleGun->GeneratePrimaryVertex(anEvent) 93 fParticleGun->GeneratePrimaryVertex(anEvent);
91 } 94 }
92 95
93 //....oooOO0OOooo........oooOO0OOooo........oo 96 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 97
94 98