svalue/src/PrimaryGeneratorAction.cc

0001 //
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0025 //
0026 /// \file PrimaryGeneratorAction.cc
0027 /// \brief Implementation of the PrimaryGeneratorAction class
0028
0029 // This example is provided by the Geant4-DNA collaboration
0030 // Any report or published results obtained using the Geant4-DNA software
0031 // shall cite the following Geant4-DNA collaboration publications:
0032 // Med. Phys. 45 (2018) e722-e739
0033 // Phys. Med. 31 (2015) 861-874
0034 // Med. Phys. 37 (2010) 4692-4708
0035 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0036 //
0037 // The Geant4-DNA web site is available at http://geant4-dna.org
0038 //
0039
0040 #include "PrimaryGeneratorAction.hh"
0041
0042 #include "DetectorConstruction.hh"
0043
0044 #include "G4RandomDirection.hh"
0045 #include "G4RunManager.hh"
0046 #include "G4StateManager.hh"
0047 #include "G4SystemOfUnits.hh"
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 PrimaryGeneratorAction::PrimaryGeneratorAction()
0052   : G4VUserPrimaryGeneratorAction(), G4VStateDependent(), fParticleGun(0), fDetector(0)
0053 {
0054   fDetector = dynamic_cast<const DetectorConstruction*>(
0055     G4RunManager::GetRunManager()->GetUserDetectorConstruction());
0056 }
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 PrimaryGeneratorAction::~PrimaryGeneratorAction()
0061 {
0062   G4StateManager::GetStateManager()->DeregisterDependent(this);
0063   if (fParticleGun) delete fParticleGun;
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 void PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0069 {
0070   G4double thickness = fDetector->GetCytoThickness();
0071   G4double radius = fDetector->GetNuclRadius();
0072
0073   G4double rx = 1 * m;
0074   G4double ry = 1 * m;
0075   G4double rz = 1 * m;
0076   G4double myRadius = 0;
0077
0078   do {
0079     rx = (2 * G4UniformRand() - 1) * (radius + thickness) * 1.01;
0080     ry = (2 * G4UniformRand() - 1) * (radius + thickness) * 1.01;
0081     rz = (2 * G4UniformRand() - 1) * (radius + thickness) * 1.01;
0082     myRadius = std::sqrt(rx * rx + ry * ry + rz * rz);
0083
0084   } while (myRadius > radius + thickness || myRadius < radius);
0085
0086   fParticleGun->SetParticlePosition(G4ThreeVector(rx, ry, rz));
0087   fParticleGun->SetParticleMomentumDirection(G4RandomDirection());
0088   fParticleGun->GeneratePrimaryVertex(anEvent);
0089 }
0090
0091 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0092
0093 G4bool PrimaryGeneratorAction::Notify(G4ApplicationState requestedState)
0094 {
0095   if (requestedState == G4State_Idle) {
0096     if (fParticleGun != 0) return true;
0097
0098     fParticleGun = new G4ParticleGun(1);
0099
0100     // Define default primary
0101
0102     G4ParticleDefinition* particle = G4ParticleTable::GetParticleTable()->FindParticle("e-");
0103     fParticleGun->SetParticleDefinition(particle);
0104     fParticleGun->SetParticleEnergy(0 * eV);
0105     fParticleGun->SetParticlePosition(G4ThreeVector());
0106     fParticleGun->SetParticleMomentumDirection(G4ThreeVector(1, 0, 0));
0107   }
0108
0109   return true;
0110 }