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26 // 26 //
27 /// \file eventgenerator/pythia/pythia8decayer 27 /// \file eventgenerator/pythia/pythia8decayer/src/Py8DecayerPhysics.cc
28 /// \brief Implementation of the Py8DecayerPhy 28 /// \brief Implementation of the Py8DecayerPhysics class
29 /// 29 ///
30 /// \author J. Yarba; FNAL 30 /// \author J. Yarba; FNAL
31 31
32 #include "Py8DecayerPhysics.hh" 32 #include "Py8DecayerPhysics.hh"
33 <<
34 #include "Py8Decayer.hh" 33 #include "Py8Decayer.hh"
35 34
36 #include "G4Decay.hh" <<
37 #include "G4DecayTable.hh" <<
38 #include "G4ParticleDefinition.hh" 35 #include "G4ParticleDefinition.hh"
39 #include "G4ProcessManager.hh" 36 #include "G4ProcessManager.hh"
>> 37 #include "G4Decay.hh"
>> 38 #include "G4DecayTable.hh"
40 39
41 // factory 40 // factory
42 // 41 //
43 #include "G4PhysicsConstructorFactory.hh" 42 #include "G4PhysicsConstructorFactory.hh"
44 // 43 //
45 // register it with contructor factory 44 // register it with contructor factory
46 // 45 //
47 G4_DECLARE_PHYSCONSTR_FACTORY(Py8DecayerPhysic 46 G4_DECLARE_PHYSCONSTR_FACTORY(Py8DecayerPhysics);
48 47
49 //....oooOO0OOooo........oooOO0OOooo........oo 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50 49
51 Py8DecayerPhysics::Py8DecayerPhysics(G4int) : << 50 Py8DecayerPhysics::Py8DecayerPhysics(G4int)
>> 51 : G4VPhysicsConstructor("Py8DecayerPhysics")
>> 52 {
>> 53 }
52 54
53 //....oooOO0OOooo........oooOO0OOooo........oo 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54 56
55 Py8DecayerPhysics::~Py8DecayerPhysics() {} << 57 Py8DecayerPhysics::~Py8DecayerPhysics()
>> 58 {
>> 59 }
56 60
57 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
58 62
59 void Py8DecayerPhysics::ConstructParticle() 63 void Py8DecayerPhysics::ConstructParticle()
60 { 64 {
61 // Nothing needs to be done here << 65 // Nothing needs to be done here
62 } 66 }
63 67
64 //....oooOO0OOooo........oooOO0OOooo........oo 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65 69
66 void Py8DecayerPhysics::ConstructProcess() 70 void Py8DecayerPhysics::ConstructProcess()
67 { 71 {
68 // Adding external decayer to G4Decay proces << 72
69 // G4Decay will use the external decayer if << 73 // Loop over all particles instantiated and add external decayer
70 // assigned to an unstable particle and that << 74 // to all decay processes where there's no decay table, plus tau's
71 // have its decay table. << 75
72 << 76 // Create external decayer for G4Decay process
73 // Loop over all particles instantiated and << 77 // NOTE: The extDecayer will be deleted in G4Decay destructor
74 // decay table for tau's and B+/- so that th << 78 Py8Decayer* extDecayer = new Py8Decayer();
75 // the external decayer (Pythia8). << 79
76 << 80 auto particleIterator=GetParticleIterator();
77 // NOTE: The extDecayer will be deleted in G << 81 particleIterator->reset();
78 << 82 while ((*particleIterator)())
79 Py8Decayer* extDecayer = new Py8Decayer(); << 83 {
80 G4bool setOnce = true; << 84 G4ParticleDefinition* particle = particleIterator->value();
81 << 85 G4ProcessManager* pmanager = particle->GetProcessManager();
82 auto particleIterator = GetParticleIterator( << 86 /*
83 particleIterator->reset(); << 87 if ( verboseLevel > 1 ) {
84 while ((*particleIterator)()) { << 88 G4cout << "Setting ext decayer for: "
85 G4ParticleDefinition* particle = particleI << 89 << particleIterator->value()->GetParticleName()
86 << 90 << G4endl;
87 // remove native/existing decay table for << 91 }
88 // a)tau's << 92 */
89 // b) B+/- <<
90 // so that G4Decay will use the external d <<
91 if (std::abs(particle->GetPDGEncoding()) = <<
92 if (particle->GetDecayTable()) { <<
93 delete particle->GetDecayTable(); <<
94 particle->SetDecayTable(nullptr); <<
95 /* <<
96 if ( verboseLevel > 1 ) { <<
97 G4cout << "Use ext decaye <<
98 << particleIterator-> <<
99 << G4endl; <<
100 } <<
101 */ <<
102 } <<
103 } <<
104 <<
105 if (setOnce) <<
106 // One G4Decay object is shared by all uns <<
107 // Thus, we set the external decayer only <<
108 { <<
109 G4ProcessManager* pmanager = particle->G <<
110 G4ProcessVector* processVector = pmanage 93 G4ProcessVector* processVector = pmanager->GetProcessList();
111 for (size_t i = 0; i < processVector->le << 94 for ( size_t i=0; i<processVector->length(); ++i )
112 G4Decay* decay = dynamic_cast<G4Decay* << 95 {
113 if (decay) { << 96 G4Decay* decay = dynamic_cast<G4Decay*>((*processVector)[i]);
114 decay->SetExtDecayer(extDecayer); << 97 if ( decay )
115 setOnce = false; << 98 {
116 } << 99 // remove native/existing decay table for
117 } << 100 // a)tau's
118 } << 101 // b) B+/-
119 } << 102 // and replace with external decayer
>> 103 if ( std::abs(particle->GetPDGEncoding()) == 15 ||
>> 104 std::abs(particle->GetPDGEncoding()) == 521 )
>> 105 {
>> 106 if ( particle->GetDecayTable() )
>> 107 {
>> 108 delete particle->GetDecayTable();
>> 109 particle->SetDecayTable(nullptr);
>> 110 }
>> 111 decay->SetExtDecayer(extDecayer);
>> 112 }
>> 113 // now set external decayer to all particles
>> 114 // that don't yet have a decay table
>> 115 if ( !particle->GetDecayTable() )
>> 116 {
>> 117 decay->SetExtDecayer(extDecayer);
>> 118 }
>> 119 }
>> 120 }
>> 121 }
120 122
121 return; << 123 return;
>> 124
122 } 125 }
123 126
124 //....oooOO0OOooo........oooOO0OOooo........oo 127 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
125 128