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25 //
26 //
27 /// \file eventgenerator/pythia/decayer6/src/P6DExtDecayerPhysics.cc
28 /// \brief Implementation of the P6DExtDecayerPhysics class
29 ///
30 /// \author I. Hrivnacova; IPN, Orsay
31
32 #include "P6DExtDecayerPhysics.hh"
33
34 #include "G4Pythia6Decayer.hh"
35
36 #include <G4Decay.hh>
37 #include <G4ParticleDefinition.hh>
38 #include <G4ProcessManager.hh>
39
40 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
41
42 P6DExtDecayerPhysics::P6DExtDecayerPhysics(const G4String& name) : G4VPhysicsConstructor(name)
43 {
44 /// Standard constructor
45 }
46
47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
48
49 P6DExtDecayerPhysics::~P6DExtDecayerPhysics()
50 {
51 /// Destructor
52 }
53
54 //
55 // protected methods
56 //
57
58 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
59
60 void P6DExtDecayerPhysics::ConstructParticle()
61 {
62 /// Nothing to be done here
63 }
64
65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
66
67 void P6DExtDecayerPhysics::ConstructProcess()
68 {
69 /// Loop over all particles instantiated and add external decayer
70 /// to all decay processes if External decayer is set
71
72 // Create Geant4 external decayer
73 G4Pythia6Decayer* extDecayer = new G4Pythia6Decayer();
74 extDecayer->SetVerboseLevel(1);
75 // The extDecayer will be deleted in G4Decay destructor
76
77 G4bool isSet = false;
78 // One G4Decay object is shared by all unstable particles (per thread).
79 // Thus, we need to set the external decayer only once.
80
81 auto particleIterator = GetParticleIterator();
82 particleIterator->reset();
83 while ((*particleIterator)()) {
84 if (isSet) break;
85
86 G4ParticleDefinition* particle = particleIterator->value();
87 G4ProcessManager* pmanager = particle->GetProcessManager();
88
89 if (verboseLevel > 1) {
90 G4cout << "Setting ext decayer for: " << particleIterator->value()->GetParticleName()
91 << G4endl;
92 }
93
94 G4ProcessVector* processVector = pmanager->GetProcessList();
95 for (std::size_t i = 0; i < processVector->length(); i++) {
96 G4Decay* decay = dynamic_cast<G4Decay*>((*processVector)[i]);
97 if (decay) {
98 decay->SetExtDecayer(extDecayer);
99 isSet = true;
100 }
101 }
102 }
103
104 if (verboseLevel > 0) {
105 G4cout << "External decayer physics constructed." << G4endl;
106 }
107 }
108
109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
110