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HepMCG4Interface.cc
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30 
31 #include "HepMCG4Interface.hh"
32 
33 #include "G4RunManager.hh"
34 #include "G4LorentzVector.hh"
35 #include "G4Event.hh"
36 #include "G4PrimaryParticle.hh"
37 #include "G4PrimaryVertex.hh"
39 #include "G4PhysicalConstants.hh"
40 #include "G4SystemOfUnits.hh"
41 
42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44  : hepmcEvent(0)
45 {
46 }
47 
48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50 {
51  delete hepmcEvent;
52 }
53 
54 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56  (const G4ThreeVector& pos) const
57 {
59  -> GetNavigatorForTracking();
60 
61  G4VPhysicalVolume* world= navigator-> GetWorldVolume();
62  G4VSolid* solid= world-> GetLogicalVolume()-> GetSolid();
63  EInside qinside= solid-> Inside(pos);
64 
65  if( qinside != kInside) return false;
66  else return true;
67 }
68 
69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
70 void HepMCG4Interface::HepMC2G4(const HepMC::GenEvent* hepmcevt,
71  G4Event* g4event)
72 {
73  for(HepMC::GenEvent::vertex_const_iterator vitr= hepmcevt->vertices_begin();
74  vitr != hepmcevt->vertices_end(); ++vitr ) { // loop for vertex ...
75 
76  // real vertex?
77  G4bool qvtx=false;
78  for (HepMC::GenVertex::particle_iterator
79  pitr= (*vitr)->particles_begin(HepMC::children);
80  pitr != (*vitr)->particles_end(HepMC::children); ++pitr) {
81 
82  if (!(*pitr)->end_vertex() && (*pitr)->status()==1) {
83  qvtx=true;
84  break;
85  }
86  }
87  if (!qvtx) continue;
88 
89  // check world boundary
90  HepMC::FourVector pos= (*vitr)-> position();
91  G4LorentzVector xvtx(pos.x(), pos.y(), pos.z(), pos.t());
92  if (! CheckVertexInsideWorld(xvtx.vect()*mm)) continue;
93 
94  // create G4PrimaryVertex and associated G4PrimaryParticles
95  G4PrimaryVertex* g4vtx=
96  new G4PrimaryVertex(xvtx.x()*mm, xvtx.y()*mm, xvtx.z()*mm,
97  xvtx.t()*mm/c_light);
98 
99  for (HepMC::GenVertex::particle_iterator
100  vpitr= (*vitr)->particles_begin(HepMC::children);
101  vpitr != (*vitr)->particles_end(HepMC::children); ++vpitr) {
102 
103  if( (*vpitr)->status() != 1 ) continue;
104 
105  G4int pdgcode= (*vpitr)-> pdg_id();
106  pos= (*vpitr)-> momentum();
107  G4LorentzVector p(pos.px(), pos.py(), pos.pz(), pos.e());
108  G4PrimaryParticle* g4prim=
109  new G4PrimaryParticle(pdgcode, p.x()*GeV, p.y()*GeV, p.z()*GeV);
110 
111  g4vtx-> SetPrimary(g4prim);
112  }
113  g4event-> AddPrimaryVertex(g4vtx);
114  }
115 }
116 
117 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
119 {
120  HepMC::GenEvent* aevent= new HepMC::GenEvent();
121  return aevent;
122 }
123 
124 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126 {
127  // delete previous event object
128  delete hepmcEvent;
129 
130  // generate next event
132  if(! hepmcEvent) {
133  G4cout << "HepMCInterface: no generated particles. run terminated..."
134  << G4endl;
135  G4RunManager::GetRunManager()-> AbortRun();
136  return;
137  }
138  HepMC2G4(hepmcEvent, anEvent);
139 }