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25 //
26 //
27 /// \file eventgenerator/pythia/py8decayer/pythia8_decayer.cc
28 /// \brief Main program of the pythia8_decayer example
29
30 #include "ActionInitialization.hh"
31 #include "DetConstruction.hh"
32 #include "FTFP_BERT.hh"
33 #include "Py8DecayerPhysics.hh"
34 #include "SingleParticleGun.hh"
35
36 #include "G4GeometryManager.hh"
37 #include "G4PhysListFactoryAlt.hh"
38 #include "G4PhysListRegistry.hh"
39 #include "G4RunManagerFactory.hh"
40 #include "G4SystemOfUnits.hh"
41 #include "Randomize.hh"
42
43 // allow ourselves to extend the short names for physics ctor addition/replace
44 // along the same lines as EMX, EMY, etc
45 #include "G4PhysListRegistry.hh"
46
47 // allow ourselves to give the user extra info about available physics ctors
48 #include "G4PhysicsConstructorFactory.hh"
49
50 // forward declaration
51 void PrintAvailable(G4int verb = 1);
52
53 int main(int argc, char** argv)
54 {
55 // pick physics list
56 std::string physListName = "FTFP_BERT+PY8DK";
57
58 for (G4int i = 1; i < argc; i = i + 2) {
59 G4String g4argv(argv[i]); // convert only once
60 if (g4argv == "-p") physListName = argv[i + 1];
61 }
62
63 // Choose the Random engine
64 //
65 G4Random::setTheEngine(new CLHEP::RanecuEngine);
66
67 // Construct the default run manager;
68 // it'll operate in the Tasking mode, and will use 5 thread
69 //
70 // If one wishes to operate in the so called serial (sequential) mode,
71 // one can use G4RunManagerType::SerialOnly
72 //
73 auto runManager = G4RunManagerFactory::CreateRunManager(G4RunManagerType::Default, 5);
74
75 // Set mandatory initialization classes
76 //
77 // Geometry
78 //
79 runManager->SetUserInitialization(new DetConstruction);
80 //
81 // Physics
82 //
83 // G4VModularPhysicsList* physicsList = new FTFP_BERT();
84 // physicsList->RegisterPhysics(new Py8DecayerPhysics());
85
86 g4alt::G4PhysListFactory plFactory;
87 G4VModularPhysicsList* physicsList = nullptr;
88 plFactory.SetDefaultReferencePhysList("NO_DEFAULT_PHYSLIST");
89
90 // set a short name for the plugin
91 G4PhysListRegistry* plReg = G4PhysListRegistry::Instance();
92 plReg->AddPhysicsExtension("PY8DK", "Py8DecayerPhysics");
93
94 physicsList = plFactory.GetReferencePhysList(physListName);
95
96 if (!physicsList) {
97 PrintAvailable(1);
98
99 // if we can't get what the user asked for...
100 // don't go on to use something else, that's confusing
101 G4ExceptionDescription ed;
102 ed << "The factory for the physicslist [" << physListName << "] does not exist!" << G4endl;
103 G4Exception("extensibleFactory", "extensibleFactory001", FatalException, ed);
104 exit(42);
105 }
106
107 runManager->SetUserInitialization(physicsList);
108 //
109 // Set user action classes, e.g. prim.generator (tau- gun), etc.
110 // NOTE: setting particle gun (prim. generator) is done in
111 // ActionInit class (see src/ActionInitialization.cc)
112 //
113 runManager->SetUserInitialization(new ActionInitialization());
114 //
115 // General initialization for the run
116 //
117 runManager->Initialize();
118
119 //
120 // Run 5 events
121 // NOTE: they will run on 5 different threads, as indicated earlier in the code
122 //
123 runManager->BeamOn(5);
124
125 // Job termination
126 // Free the store: user actions, physics_list and detector_description are
127 // owned and deleted by the run manager, so they should not
128 // be deleted in the main() program !
129 delete runManager;
130
131 return 0;
132 }
133
134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
135
136 void PrintAvailable(G4int verbosity)
137 {
138 G4cout << G4endl;
139 G4cout << "extensibleFactory: here are the available physics lists:" << G4endl;
140 g4alt::G4PhysListFactory factory;
141 factory.PrintAvailablePhysLists();
142
143 // if user asked for extra verbosity then print physics ctors as well
144 if (verbosity > 1) {
145 G4cout << G4endl;
146 G4cout << "extensibleFactory: "
147 << "here are the available physics ctors that can be added:" << G4endl;
148 G4PhysicsConstructorRegistry* g4pctorFactory = G4PhysicsConstructorRegistry::Instance();
149 g4pctorFactory->PrintAvailablePhysicsConstructors();
150 }
151 }
152
153 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
154