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26 /// \file medical/electronScattering/src/Prima << 26 // $Id: PrimaryGeneratorAction.cc,v 1.1 2009-09-19 16:09:44 maire Exp $
27 /// \brief Implementation of the PrimaryGenera << 27 // GEANT4 tag $Name: not supported by cvs2svn $
28 // <<
29 // 28 //
30 //....oooOO0OOooo........oooOO0OOooo........oo 29 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oo 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 31
33 #include "PrimaryGeneratorAction.hh" 32 #include "PrimaryGeneratorAction.hh"
34 33
35 #include "DetectorConstruction.hh" 34 #include "DetectorConstruction.hh"
36 #include "PrimaryGeneratorMessenger.hh" 35 #include "PrimaryGeneratorMessenger.hh"
37 36
38 #include "G4Event.hh" 37 #include "G4Event.hh"
39 #include "G4ParticleDefinition.hh" <<
40 #include "G4ParticleTable.hh" 38 #include "G4ParticleTable.hh"
41 #include "G4SystemOfUnits.hh" << 39 #include "G4ParticleDefinition.hh"
42 #include "Randomize.hh" 40 #include "Randomize.hh"
43 41
44 //....oooOO0OOooo........oooOO0OOooo........oo 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45 43
46 PrimaryGeneratorAction::PrimaryGeneratorAction 44 PrimaryGeneratorAction::PrimaryGeneratorAction(DetectorConstruction* DC)
47 : fParticleGun(0), fDetector(DC), fGunMessen << 45 :detector(DC)
48 { 46 {
49 fParticleGun = new G4ParticleGun(1); << 47 particleGun = new G4ParticleGun(1);
50 48
51 G4ParticleTable* particleTable = G4ParticleT 49 G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
52 G4ParticleDefinition* particle = particleTab 50 G4ParticleDefinition* particle = particleTable->FindParticle("e-");
53 fParticleGun->SetParticleDefinition(particle << 51 particleGun->SetParticleDefinition(particle);
54 fParticleGun->SetParticleEnergy(20. * MeV); << 52 particleGun->SetParticleEnergy(20.*MeV);
55 fZ0 = -0.5 * (fDetector->GetThicknessWorld() << 53 z0 = -0.5*(detector->GetThicknessWorld());
56 fParticleGun->SetParticlePosition(G4ThreeVec << 54 particleGun->SetParticlePosition(G4ThreeVector(0*cm, 0*cm, z0));
57 fParticleGun->SetParticleMomentumDirection(G << 55 particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.));
58 << 56
59 G4double radiusWorld = fDetector->GetRadiusW << 57 G4double radiusWorld = detector->GetRadiusWorld();
60 fR2World = radiusWorld * radiusWorld; << 58 r2World = radiusWorld*radiusWorld;
61 fRndmBeam = 420 * um; << 59 rndmBeam = 420*um;
62 << 60
63 // create a messenger for this class << 61 //create a messenger for this class
64 fGunMessenger = new PrimaryGeneratorMessenge << 62 gunMessenger = new PrimaryGeneratorMessenger(this);
65 } 63 }
66 64
67 //....oooOO0OOooo........oooOO0OOooo........oo 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 66
69 PrimaryGeneratorAction::~PrimaryGeneratorActio 67 PrimaryGeneratorAction::~PrimaryGeneratorAction()
70 { 68 {
71 delete fParticleGun; << 69 delete particleGun;
72 delete fGunMessenger; << 70 delete gunMessenger;
73 } 71 }
74 72
75 //....oooOO0OOooo........oooOO0OOooo........oo 73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76 74
77 void PrimaryGeneratorAction::GeneratePrimaries 75 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
78 { 76 {
79 // this function is called at the begining o << 77 //this function is called at the begining of event
80 // 78 //
81 // randomize beam, if requested. << 79 //randomize beam, if requested.
82 if (fRndmBeam > 0.) { << 80 if (rndmBeam > 0.) {
83 G4double s_proj = fRndmBeam / std::sqrt(2. << 81 G4double s_proj = rndmBeam/std::sqrt(2.);
84 G4double x0, y0; << 82 G4double x0, y0;
85 do { 83 do {
86 x0 = G4RandGauss::shoot(0., s_proj); << 84 x0 = G4RandGauss::shoot(0.,s_proj);
87 y0 = G4RandGauss::shoot(0., s_proj); << 85 y0 = G4RandGauss::shoot(0.,s_proj);
88 } while ((x0 * x0 + y0 * y0) > fR2World); << 86 } while ((x0*x0 + y0*y0) > r2World);
89 fParticleGun->SetParticlePosition(G4ThreeV << 87 particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
90 } 88 }
91 << 89
92 fParticleGun->GeneratePrimaryVertex(anEvent) << 90 particleGun->GeneratePrimaryVertex(anEvent);
93 } 91 }
94 92
95 //....oooOO0OOooo........oooOO0OOooo........oo 93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
96 94