IAEAphsp/src/PrimaryGeneratorAction.cc

0001 //
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0024 // ********************************************************************
0025 //
0026
0027
0028 #include "PrimaryGeneratorAction.hh"
0029 #include "PrimaryGeneratorMessenger.hh"
0030 #include "G4IAEAphspReader.hh"
0031
0032 #include "globals.hh"
0033 #include "Randomize.hh"
0034 #include "G4SystemOfUnits.hh"
0035 #include "G4ParticleGun.hh"
0036 #include "G4ParticleTable.hh"
0037 #include "G4ParticleDefinition.hh"
0038 #include "G4Gamma.hh"
0039 #include "G4RunManager.hh"
0040
0041 #include <vector>
0042
0043
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045
0046 PrimaryGeneratorAction::PrimaryGeneratorAction(const G4int threads)
0047   :fThreads(threads)
0048 {
0049   fIAEAphspReaderName = "";
0050   fVerbose = 0;
0051   fMessenger = new PrimaryGeneratorMessenger(this);
0052   fParticleGun = new G4ParticleGun();
0053   fParticleGun->SetParticleDefinition(G4Gamma::Definition());
0054
0055   fCounter = 0;
0056   fKinE = 50.0*MeV;
0057   fDE = 0.0;
0058   fX0 = 0.0;
0059   fY0 = 0.0;
0060   fZ0 = 0.0;
0061   fDX = 0.0;
0062   fDY = 0.0;
0063   fDZ = 0.0;
0064 }
0065
0066
0067 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0068
0069 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0070 {
0071   if (fVerbose > 0) G4cout << "Destroying PrimaryGeneratorAction" << G4endl;
0072   delete fParticleGun;
0073   delete fMessenger;
0074
0075   if (fIAEAphspReader) delete fIAEAphspReader;
0076   if (fVerbose > 0) G4cout << "PrimaryGeneratorAction destroyed" << G4endl;
0077 }
0078
0079
0080 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0081
0082 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0083 {
0084   if (fIAEAphspReader) {
0085     fIAEAphspReader->GeneratePrimaryVertex(anEvent);
0086   }
0087
0088   else {
0089
0090     fCounter++ ;
0091
0092     // Simulation of beam kinetic energy
0093     G4double kinEnergy = fKinE;
0094     if(fDE > 0.0)
0095       kinEnergy = G4RandFlat::shoot(fKinE-fDE/2., fKinE+fDE/2.);
0096
0097     fParticleGun->SetParticleEnergy(kinEnergy);
0098
0099     // Simulation of beam position
0100     G4double x = fX0;
0101     G4double y = fY0;
0102     G4double z = fZ0;
0103     if (fDX > 0.0)
0104       x = G4RandFlat::shoot(fX0-fDX/2., fX0+fDX/2.);
0105     if (fDY > 0.0)
0106       y = G4RandFlat::shoot(fY0-fDY/2., fY0+fDY/2.);
0107     if (fDZ > 0.0)
0108       z = G4RandFlat::shoot(fZ0-fDZ/2., fZ0+fDZ/2.);
0109
0110     fParticleGun->SetParticlePosition( G4ThreeVector(x,y,z) );
0111
0112     // Simulation of beam direction
0113     G4double ux = 0.0;
0114     G4double uy = 0.0;
0115     G4double uz = 1.0;
0116
0117     // Beam particles are randomly going upwards or downwards
0118     // This is done in order to let G4IAEAphspReader show how n_stat works
0119     if(G4UniformRand() < 0.5)
0120       uz = -uz;
0121
0122     fParticleGun->SetParticleMomentumDirection( G4ThreeVector(ux,uy,uz) );
0123
0124     if(fVerbose > 1) {
0125       G4ParticleDefinition* particle = fParticleGun->GetParticleDefinition();
0126       G4String particleName = particle->GetParticleName();
0127       G4cout << G4endl
0128          << "Event # " << fCounter
0129          << "  ParticleGun vertex:  "
0130          << "ParticleName = " << particleName
0131          << "   PDGcode = " << particle->GetPDGEncoding()
0132          << G4endl;
0133       G4cout << std::setprecision(6)
0134          << "\t\t KinEnergy (MeV) = " << kinEnergy/MeV
0135          << "   weight = " << fParticleGun->GetParticleWeight()
0136          << G4endl
0137          << "\t\t x (cm) = "  << x/cm
0138          << "  y (cm) = "   << y/cm
0139          << "  z (cm) = "   << z/cm
0140          << "    ux = " << ux << "  uy = " << uy << "  uz = " << uz
0141          << G4endl;
0142     }
0143
0144     fParticleGun->GeneratePrimaryVertex(anEvent);
0145   }
0146 }
0147
0148
0149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0150
0151 void PrimaryGeneratorAction::SetIAEAphspReader(const G4String filename)
0152 {
0153   fIAEAphspReaderName = filename;
0154   fIAEAphspReader = new G4IAEAphspReader(filename, fThreads);
0155 }