AuNP/src/PrimaryGeneratorAction.cc

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