source: trunk/examples/advanced/purging_magnet/src/PurgMagPrimaryGeneratorAction.cc @ 1230

Last change on this file since 1230 was 1230, checked in by garnier, 14 years ago

update to geant4.9.3

File size: 4.1 KB
Line 
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25//
26// Code developed by:
27//  S.Larsson
28//
29//    ********************************************
30//    *                                          *
31//    *    PurgMagPrimaryGeneratorAction.cc     *
32//    *                                          *
33//    ********************************************
34//
35// $Id: PurgMagPrimaryGeneratorAction.cc,v 1.3 2006/06/29 16:06:17 gunter Exp $
36// GEANT4 tag $Name: geant4-09-03-cand-01 $
37//
38
39//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
40
41#include "PurgMagPrimaryGeneratorAction.hh"
42
43#include "PurgMagDetectorConstruction.hh"
44
45#include "G4Event.hh"
46#include "G4ParticleGun.hh"
47#include "G4ParticleTable.hh"
48#include "G4ParticleDefinition.hh"
49#include "Randomize.hh"
50#include "G4UnitsTable.hh"
51
52//Print position of primaries.
53#define POSITION 0
54
55//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
56
57PurgMagPrimaryGeneratorAction::PurgMagPrimaryGeneratorAction(PurgMagDetectorConstruction* PurgMagDC)
58  :PurgMagDetector(PurgMagDC),rndmVertex(false)
59{
60  //default kinematic
61  G4int n_particle = 1;
62  particleGun  = new G4ParticleGun(n_particle);
63 
64  G4ParticleDefinition* particle
65    =
66   
67    G4ParticleTable::GetParticleTable()->FindParticle("e-");
68  particleGun->SetParticleDefinition(particle);
69  particleGun->SetParticleEnergy(50.*MeV);
70
71  //Momentum Direction
72  particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.));
73 
74}
75
76//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
77
78PurgMagPrimaryGeneratorAction::~PurgMagPrimaryGeneratorAction()
79{
80  delete particleGun;
81  }
82
83//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
84
85void PurgMagPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent)
86{
87  //this function is called at the begining of event
88  //Start position of primaries
89  G4double z0 = 15.*cm;
90  G4double x0 = 0.*cm;
91  G4double y0 = 0.*cm;
92  particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0));
93  particleGun->GeneratePrimaryVertex(anEvent);
94
95#if POSITION 
96  G4cout << "\n----Particle Gun--------------------------------------------\n";
97  G4cout << "\n ---> SetParticlePosition(G4ThreeVector(x0,y0,z0)) ";
98  G4cout << "\n ---> x0 = " << x0 << " "<< G4BestUnit(x0,"Length");
99  G4cout << "\n ---> y0 = " << y0 << " "<< G4BestUnit(y0,"Length");
100  G4cout << "\n ---> z0 = " << z0 << " "<< G4BestUnit(z0,"Length");
101  G4cout << "\n-----------------------------------------------------------\n";
102#endif
103}
104
105//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
106
107
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