application/src/eRositaPrimaryGeneratorAction.cc

0001 //
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0025 //
0026
0027 #include "eRositaActionInitialization.hh"
0028 #include "eRositaDetectorConstruction.hh"
0029 #include "eRositaPrimaryGeneratorAction.hh"
0030
0031 #include "globals.hh"
0032 #include "G4SystemOfUnits.hh"
0033 #include "G4Event.hh"
0034 #include "G4ParticleGun.hh"
0035 #include "G4ParticleTable.hh"
0036 #include "G4ParticleDefinition.hh"
0037
0038 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0039
0040 eRositaPrimaryGeneratorAction::eRositaPrimaryGeneratorAction()
0041 {
0042     constexpr auto NUMBER_OF_PARTICLES{1};
0043     particleGun = new G4ParticleGun(NUMBER_OF_PARTICLES);
0044
0045     // default particle
0046     auto *particleTable = G4ParticleTable::GetParticleTable();
0047     auto *particle = particleTable->FindParticle("proton");
0048
0049     constexpr auto PARTICLE_ENERGY{100.0 * MeV};
0050     particleGun->SetParticleDefinition(particle);
0051     particleGun->SetParticleMomentumDirection(G4ThreeVector(momentumDirectionX, momentumDirectionY, momentumDirectionZ));
0052     particleGun->SetParticleEnergy(PARTICLE_ENERGY);
0053 }
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0056
0057 eRositaPrimaryGeneratorAction::~eRositaPrimaryGeneratorAction()
0058 {
0059     delete particleGun;
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0063
0064 void eRositaPrimaryGeneratorAction::GeneratePrimaries(G4Event* event)
0065 {
0066     constexpr auto INITIAL_POSITION_X{0.0 * cm};
0067     constexpr auto INITIAL_POSITION_Y{2.25 * cm};
0068     constexpr auto INITIAL_POSITION_Z{4.0 * cm};
0069
0070     positionX = INITIAL_POSITION_X;
0071     positionY = INITIAL_POSITION_Y;
0072     positionZ = INITIAL_POSITION_Z;
0073
0074     particleGun->SetParticlePosition(G4ThreeVector(positionX, positionY, positionZ));
0075     particleGun->GeneratePrimaryVertex(event);
0076 }