purging_magnet/src/PurgMagPrimaryGeneratorAction.cc

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
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0024 // ********************************************************************
0025 //
0026 // Code developed by:
0027 //  S.Larsson
0028 //
0029 //    ********************************************
0030 //    *                                          *
0031 //    *    PurgMagPrimaryGeneratorAction.cc     *
0032 //    *                                          *
0033 //    ********************************************
0034 //
0035 //
0036
0037 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0038
0039 #include "PurgMagPrimaryGeneratorAction.hh"
0040
0041 #include "PurgMagDetectorConstruction.hh"
0042
0043 #include "G4SystemOfUnits.hh"
0044 #include "G4UnitsTable.hh"
0045 #include "G4Event.hh"
0046 #include "G4ParticleGun.hh"
0047 #include "G4ParticleTable.hh"
0048 #include "G4ParticleDefinition.hh"
0049 #include "G4Electron.hh"
0050
0051
0052 //Print position of primaries.
0053 #define POSITION 0
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0056
0057 PurgMagPrimaryGeneratorAction::PurgMagPrimaryGeneratorAction()
0058   :rndmVertex(false)
0059 {
0060   //default kinematic
0061   G4int n_particle = 1;
0062   particleGun  = new G4ParticleGun(n_particle);
0063
0064   G4ParticleDefinition* particle
0065     = G4Electron::Definition();
0066
0067   particleGun->SetParticleDefinition(particle);
0068   particleGun->SetParticleEnergy(50.*MeV);
0069
0070   //Momentum Direction
0071   particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
0072
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0076
0077 PurgMagPrimaryGeneratorAction::~PurgMagPrimaryGeneratorAction()
0078 {
0079   delete particleGun;
0080   }
0081
0082 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0083
0084 void PurgMagPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
0085 {
0086   //this function is called at the begining of event
0087   //Start position of primaries
0088   G4double z0 = 15.*cm;
0089   G4double x0 = 0.*cm;
0090   G4double y0 = 0.*cm;
0091   particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
0092   particleGun->GeneratePrimaryVertex(anEvent);
0093
0094 #if POSITION
0095   G4cout << "\n----Particle Gun--------------------------------------------\n";
0096   G4cout << "\n ---> SetParticlePosition(G4ThreeVector(x0,y0,z0)) ";
0097   G4cout << "\n ---> x0 = " << x0 << " "<< G4BestUnit(x0,"Length");
0098   G4cout << "\n ---> y0 = " << y0 << " "<< G4BestUnit(y0,"Length");
0099   G4cout << "\n ---> z0 = " << z0 << " "<< G4BestUnit(z0,"Length");
0100   G4cout << "\n-----------------------------------------------------------\n";
0101 #endif
0102 }
0103
0104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0105
0106