Geant4  9.6.p02
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G4RayShooter.cc
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25 //
26 //
27 // $Id$
28 //
29 
30 #include "G4RayShooter.hh"
31 #include "G4SystemOfUnits.hh"
32 #include "G4PrimaryParticle.hh"
33 #include "G4Event.hh"
34 #include "G4ParticleTable.hh"
35 #include "G4ParticleDefinition.hh"
36 #include "globals.hh"
37 
38 
40 {
41  SetInitialValues();
42 }
43 
44 void G4RayShooter::SetInitialValues()
45 {
46  particle_definition = 0;
47  G4ThreeVector zero;
48  particle_momentum_direction = (G4ParticleMomentum)zero;
49  particle_energy = 1.0*GeV;
50  particle_position = zero;
51  particle_time = 0.0;
52  particle_polarization = zero;
53 }
54 
56 {
57 }
58 
60 {
61  if(!particle_definition)
62  {
64  G4String particleName;
65  particle_definition = particleTable->FindParticle(particleName="geantino");
66  if(!particle_definition)
67  {
68  G4String msg;
69  msg = " G4RayTracer uses geantino to trace the ray, but your physics list does not\n";
70  msg += "define G4Geantino. Please add G4Geantino in your physics list.";
71  G4Exception("G4RayShooter::Shoot","RayTracer001",FatalException,msg);
72  }
73  }
74 
75  // create a new vertex
76  G4PrimaryVertex* vertex = new G4PrimaryVertex(vtx,particle_time);
77 
78  // create new primaries and set them to the vertex
79  G4double mass = particle_definition->GetPDGMass();
80  G4PrimaryParticle* particle =
81  new G4PrimaryParticle(particle_definition);
82  particle->SetKineticEnergy( particle_energy );
83  particle->SetMass( mass );
84  particle->SetMomentumDirection( direc );
85  particle->SetPolarization(particle_polarization.x(),
86  particle_polarization.y(),
87  particle_polarization.z());
88  vertex->SetPrimary( particle );
89 
90  evt->AddPrimaryVertex( vertex );
91 }
92 
93