AuNP/src/PrimaryGeneratorAction.cc

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0025 //
0026 /// \file medical/dna/range/src/PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028 //
0029 // $Id: PrimaryGeneratorAction.cc 73024 2013-08-15 09:11:40Z gcosmo $
0030 //
0031 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0032 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0033
0034 #include "PrimaryGeneratorAction.hh"
0035
0036 #include "DetectorConstruction.hh"
0037
0038 #include "G4Electron.hh"
0039 #include "G4Event.hh"
0040 #include "G4Gamma.hh"
0041 #include "G4ParticleDefinition.hh"
0042 #include "G4ParticleGun.hh"
0043 #include "G4ParticleTable.hh"
0044 #include "G4PhysicalConstants.hh"
0045 #include "G4RandomDirection.hh"
0046 #include "G4RunManager.hh"
0047 #include "G4StateManager.hh"
0048 #include "G4SystemOfUnits.hh"
0049 #include "Randomize.hh"
0050
0051 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0052
0053 PrimaryGeneratorAction::PrimaryGeneratorAction()
0054   : G4VUserPrimaryGeneratorAction(), G4VStateDependent(), fParticleGun(0), fDetector(0)
0055 {
0056   fDetector = dynamic_cast<const DetectorConstruction*>(
0057     G4RunManager::GetRunManager()->GetUserDetectorConstruction());
0058   G4int n_particle = 1;
0059   fParticleGun = new G4ParticleGun(n_particle);
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0063
0064 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0065 {
0066   G4StateManager::GetStateManager()->DeregisterDependent(this);
0067   if (fParticleGun) delete fParticleGun;
0068 }
0069
0070 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0071
0072 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0073 {
0074   G4double R = fDetector->GetNPRadius();
0075   G4double Ryz = 9999;
0076
0077   // G4ParticleDefinition *particle = G4Electron::ElectronDefinition();
0078   // fParticleGun->SetParticleDefinition(particle);
0079
0080   G4double scale = 1.;
0081
0082   G4double xpos = 0, ypos = 0, zpos = 0;
0083   while (!(Ryz < R)) {
0084     ypos = (2. * G4UniformRand() - 1.) * R;
0085     zpos = (2. * G4UniformRand() - 1.) * R;
0086     Ryz = std::sqrt(ypos * ypos + zpos * zpos);
0087   }
0088   xpos = std::sqrt(R * R - (ypos * ypos + zpos * zpos));
0089   fParticleGun->SetParticlePosition(G4ThreeVector(-xpos * scale, ypos * scale, zpos * scale));
0090   fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1, 0, 0));
0091
0092   fParticleGun->GeneratePrimaryVertex(anEvent);
0093 }
0094
0095 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0096
0097 G4bool PrimaryGeneratorAction::Notify(G4ApplicationState requestedState)
0098 {
0099   if (requestedState == G4State_Idle) {
0100     if (fParticleGun != 0) return true;
0101     G4double R = fDetector->GetNPRadius();
0102     G4double Ryz = 9999;
0103     ;
0104
0105     // G4ParticleDefinition *particle = G4Electron::ElectronDefinition();
0106     // fParticleGun->SetParticleDefinition(particle);
0107
0108     fParticleGun->SetParticleMomentumDirection(G4ThreeVector(-1, 0, 0));
0109
0110     while (!(Ryz < R)) {
0111       G4double ypos = (2. * G4UniformRand() - 1.) * R;
0112       G4double zpos = (2. * G4UniformRand() - 1.) * R;
0113       Ryz = std::sqrt(ypos * ypos + zpos * zpos);
0114       G4double xpos = std::sqrt(R * R - (ypos * ypos + zpos * zpos));
0115       fParticleGun->SetParticlePosition(G4ThreeVector(-xpos, ypos, zpos));
0116     }
0117     // fParticleGun->SetParticlePosition(G4ThreeVector(-Xposition,0,0));
0118     // fParticleGun->GeneratePrimaryVertex(anEvent);
0119   }
0120
0121   return true;
0122 }