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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: G4HyperonFTFPBuilder
30 //
31 // Author: 2012 G.Folger
32 // Implementation started from G4HyperonLHEPBuilder.
33 //
34 // Modified:
35 //----------------------------------------------------------------------------
36
37 #include "G4HyperonFTFPBuilder.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "G4ParticleDefinition.hh"
40 #include "G4ParticleTable.hh"
41 #include "G4ProcessManager.hh"
42 #include "G4HadronInelasticProcess.hh"
43 #include "G4CrossSectionInelastic.hh"
44 #include "G4ComponentGGHadronNucleusXsc.hh"
45 #include "G4HadronicParameters.hh"
46 #include "G4TheoFSGenerator.hh"
47 #include "G4GeneratorPrecompoundInterface.hh"
48 #include "G4FTFModel.hh"
49 #include "G4LundStringFragmentation.hh"
50 #include "G4ExcitedStringDecay.hh"
51 #include "G4CascadeInterface.hh"
52 #include "G4QuasiElasticChannel.hh"
53
54
55 G4HyperonFTFPBuilder::G4HyperonFTFPBuilder( G4bool quasiElastic ) {
56 // The following energy limits refer to FTFP only and only for hyperons
57 // (for antihyperons, the min energy is assumed to be 0.0; the max is the same as for hyperons)
58 theMin = G4HadronicParameters::Instance()->GetMinEnergyTransitionFTF_Cascade();
59 theMax = G4HadronicParameters::Instance()->GetMaxEnergy();
60 // Hyperon : Bertini at low energies, then FTFP
61 theHyperonFTFP = new G4TheoFSGenerator( "FTFP" );
62 theHyperonFTFP->SetMinEnergy( theMin );
63 theHyperonFTFP->SetMaxEnergy( theMax );
64 G4FTFModel* theStringModel = new G4FTFModel;
65 theStringModel->SetFragmentationModel( new G4ExcitedStringDecay );
66 G4GeneratorPrecompoundInterface* theCascade = new G4GeneratorPrecompoundInterface;
67 theHyperonFTFP->SetTransport( theCascade );
68 theHyperonFTFP->SetHighEnergyGenerator( theStringModel );
69 if ( quasiElastic ) theHyperonFTFP->SetQuasiElasticChannel( new G4QuasiElasticChannel );
70
71 theBertini = new G4CascadeInterface;
72 theBertini->SetMinEnergy( 0.0 );
73 theBertini->SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergyTransitionFTF_Cascade() );
74
75 // AntiHyperons: Use FTFP for full energy range, starting at 0.
76 theAntiHyperonFTFP = new G4TheoFSGenerator( "FTFP" );
77 theAntiHyperonFTFP->SetMinEnergy( 0.0 );
78 theAntiHyperonFTFP->SetMaxEnergy( theMax );
79 theAntiHyperonFTFP->SetTransport( theCascade );
80 theAntiHyperonFTFP->SetHighEnergyGenerator( theStringModel );
81 if ( quasiElastic ) theAntiHyperonFTFP->SetQuasiElasticChannel( new G4QuasiElasticChannel );
82
83 // use Glauber-Gribov cross sections
84 theInelasticCrossSection = new G4CrossSectionInelastic( new G4ComponentGGHadronNucleusXsc );
85 }
86
87
88 G4HyperonFTFPBuilder::~G4HyperonFTFPBuilder() {}
89
90
91 void G4HyperonFTFPBuilder::Build( G4HadronInelasticProcess* aP ) {
92 if ( aP->GetParticleDefinition() && aP->GetParticleDefinition()->GetBaryonNumber() < 0 ) {
93 // Anti-hyperon
94 theAntiHyperonFTFP->SetMaxEnergy( theMax );
95 aP->RegisterMe( theAntiHyperonFTFP );
96 } else {
97 // Hyperon
98 theHyperonFTFP->SetMinEnergy( theMin );
99 theHyperonFTFP->SetMaxEnergy( theMax );
100 aP->RegisterMe( theBertini );
101 aP->RegisterMe( theHyperonFTFP );
102 }
103 aP->AddDataSet( theInelasticCrossSection );
104 }
105
106