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25 // 25 //
26 /// \file eventgenerator/particleGun/src/Prima 26 /// \file eventgenerator/particleGun/src/PrimaryGeneratorAction0.cc
27 /// \brief Implementation of the PrimaryGenera 27 /// \brief Implementation of the PrimaryGeneratorAction0 class
28 // 28 //
29 // 29 //
30 // << 30 //
31 //....oooOO0OOooo........oooOO0OOooo........oo 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oo 32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33 33
34 #include "PrimaryGeneratorAction0.hh" 34 #include "PrimaryGeneratorAction0.hh"
35 <<
36 #include "PrimaryGeneratorAction.hh" 35 #include "PrimaryGeneratorAction.hh"
37 36
38 #include "G4Event.hh" 37 #include "G4Event.hh"
39 #include "G4ParticleGun.hh" 38 #include "G4ParticleGun.hh"
40 #include "G4SystemOfUnits.hh" 39 #include "G4SystemOfUnits.hh"
41 #include "Randomize.hh" 40 #include "Randomize.hh"
42 41
43 //....oooOO0OOooo........oooOO0OOooo........oo 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44 43
45 PrimaryGeneratorAction0::PrimaryGeneratorActio << 44 PrimaryGeneratorAction0::PrimaryGeneratorAction0(G4ParticleGun* gun)
>> 45 : fParticleGun(gun)
46 { 46 {
47 // solid angle << 47 //solid angle
48 // 48 //
49 G4double alphaMin = 0 * deg; // alpha in [0 << 49 G4double alphaMin = 0*deg; //alpha in [0,pi]
50 G4double alphaMax = 60 * deg; << 50 G4double alphaMax = 60*deg;
51 fCosAlphaMin = std::cos(alphaMin); 51 fCosAlphaMin = std::cos(alphaMin);
52 fCosAlphaMax = std::cos(alphaMax); 52 fCosAlphaMax = std::cos(alphaMax);
53 << 53
54 fPsiMin = 0 * deg; // psi in [0, 2*pi] << 54 fPsiMin = 0*deg; //psi in [0, 2*pi]
55 fPsiMax = 360 * deg; << 55 fPsiMax = 360*deg;
56 } 56 }
57 57
58 //....oooOO0OOooo........oooOO0OOooo........oo 58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59 59
>> 60 PrimaryGeneratorAction0::~PrimaryGeneratorAction0()
>> 61 { }
>> 62
>> 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
>> 64
60 void PrimaryGeneratorAction0::GeneratePrimarie 65 void PrimaryGeneratorAction0::GeneratePrimaries(G4Event* anEvent)
61 { << 66 {
62 // vertex position fixed << 67 //vertex position fixed
63 // 68 //
64 G4double x0 = 0 * mm, y0 = 0 * mm, z0 = 0 * << 69 G4double x0 = 0*mm, y0 = 0*mm, z0 = 0*mm;
65 fParticleGun->SetParticlePosition(G4ThreeVec << 70 fParticleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
66 71
67 // direction uniform in solid angle << 72 //direction uniform in solid angle
68 // 73 //
69 G4double cosAlpha = fCosAlphaMin - G4Uniform << 74 G4double cosAlpha = fCosAlphaMin-G4UniformRand()*(fCosAlphaMin-fCosAlphaMax);
70 G4double sinAlpha = std::sqrt(1. - cosAlpha << 75 G4double sinAlpha = std::sqrt(1. - cosAlpha*cosAlpha);
71 G4double psi = fPsiMin + G4UniformRand() * ( << 76 G4double psi = fPsiMin + G4UniformRand()*(fPsiMax - fPsiMin);
72 << 77
73 G4double ux = sinAlpha * std::cos(psi), uy = << 78 G4double ux = sinAlpha*std::cos(psi),
74 << 79 uy = sinAlpha*std::sin(psi),
75 fParticleGun->SetParticleMomentumDirection(G << 80 uz = cosAlpha;
76 81
>> 82 fParticleGun->SetParticleMomentumDirection(G4ThreeVector(ux,uy,uz));
>> 83
77 fParticleGun->GeneratePrimaryVertex(anEvent) 84 fParticleGun->GeneratePrimaryVertex(anEvent);
78 } 85 }
79 86
80 //....oooOO0OOooo........oooOO0OOooo........oo 87 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
81 88