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25 //
26 //---------------------------------------------------------------------------
27 //
28 // ClassName: G4HadronicAbsorptionFritiof
29 //
30 // Author: Alberto Ribon
31 //
32 // Date: 27 July 2012
33 //
34 // Modified:
35 //
36 // Class Description:
37 //
38 // Intermediate class for hadronic absorption at rest using FTF/Preco.
39 //
40 //---------------------------------------------------------------------------
41
42 #include <iostream>
43
44 #include "G4SystemOfUnits.hh"
45 #include "G4HadronicAbsorptionFritiof.hh"
46 #include "G4PreCompoundModel.hh"
47 #include "G4GeneratorPrecompoundInterface.hh"
48 #include "G4FTFModel.hh"
49 #include "G4LundStringFragmentation.hh"
50 #include "G4ExcitedStringDecay.hh"
51 #include "G4TheoFSGenerator.hh"
52 #include "G4ParticleDefinition.hh"
53 #include "G4ParticleTypes.hh"
54 #include "G4HadronicInteractionRegistry.hh"
55 #include "G4HadronicParameters.hh"
56
57 // Constructor
58 G4HadronicAbsorptionFritiof::
59 G4HadronicAbsorptionFritiof( G4ParticleDefinition* pdef )
60 : G4HadronStoppingProcess( "hFritiofCaptureAtRest" ),
61 pdefApplicable( pdef ) {
62
63 G4TheoFSGenerator * theModel = new G4TheoFSGenerator( "FTFP" );
64 G4FTFModel * theStringModel = new G4FTFModel;
65 theStringModel->SetFragmentationModel(new G4ExcitedStringDecay());
66
67 // Not a cascade - goes straight to Preco
68 G4HadronicInteraction* p =
69 G4HadronicInteractionRegistry::Instance()->FindModel("PRECO");
70 G4VPreCompoundModel * thePreEquilib = static_cast<G4VPreCompoundModel*>(p);
71 if(! thePreEquilib) { thePreEquilib = new G4PreCompoundModel; }
72
73 G4GeneratorPrecompoundInterface * theCascade =
74 new G4GeneratorPrecompoundInterface( thePreEquilib );
75
76 theModel->SetHighEnergyGenerator( theStringModel );
77 theModel->SetTransport( theCascade );
78
79 G4double theMin = 0.0*GeV;
80 G4double theMax = G4HadronicParameters::Instance()->GetMaxEnergy();
81 theModel->SetMinEnergy( theMin );
82 theModel->SetMaxEnergy( theMax );
83
84 RegisterMe( theModel );
85 }
86
87 G4HadronicAbsorptionFritiof::~G4HadronicAbsorptionFritiof() {
88 }
89
90 // Applies to constructor-specified particle, or to all known cases
91 G4bool G4HadronicAbsorptionFritiof::
92 IsApplicable( const G4ParticleDefinition& particle ) {
93 return ( ( 0 == pdefApplicable &&
94 ( &particle == G4AntiProton::Definition() ||
95 &particle == G4AntiNeutron::Definition() ||
96 &particle == G4AntiLambda::Definition() ||
97 &particle == G4AntiSigmaZero::Definition() ||
98 &particle == G4AntiSigmaPlus::Definition() ||
99 &particle == G4AntiXiZero::Definition() ||
100 particle.GetBaryonNumber() < -1 ) ) // Anti-nuclei
101 || ( &particle == pdefApplicable ) );
102 }
103
104
105 // Documentation of purpose
106 void G4HadronicAbsorptionFritiof::
107 ProcessDescription( std::ostream& os ) const {
108 os << "Stopping and absorption of anti_proton, anti_neutron, anti_lambda, \n"
109 << "anti_sigma0, anti_sigma+, anti_xi0 and all anti-nuclei \n"
110 << "using Fritiof (FTF) string model.\n"
111 << "Geant4 PreCompound model is used for nuclear de-excitation."
112 << std::endl;
113 }
114