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Geant4/physics_lists/builders/src/G4QGSPNeutronBuilder.cc

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 25 //
 26 //
 27 //---------------------------------------------------------------------------
 28 //
 29 // ClassName:   G4QGSPNeutronBuilder
 30 //
 31 // Author: 2002 J.P. Wellisch
 32 //
 33 // Modified:
 34 // 17.11.2010 G.Folger, use G4CrossSectionPairGG for relativistic rise of cross
 35 //             section at high energies.
 36 // 30.03.2009 V.Ivanchenko create cross section by new
 37 // 12.04.2017 A.Dotti move to new design with base class
 38 //
 39 //----------------------------------------------------------------------------
 40 //
 41 #include "G4QGSPNeutronBuilder.hh"
 42 #include "G4SystemOfUnits.hh"
 43 #include "G4ParticleDefinition.hh"
 44 #include "G4ParticleTable.hh"
 45 #include "G4ProcessManager.hh"
 46 #include "G4NeutronInelasticXS.hh"
 47 #include "G4HadronicParameters.hh"
 48 
 49 
 50 G4QGSPNeutronBuilder::
 51 G4QGSPNeutronBuilder(G4bool quasiElastic) 
 52 {
 53   theMin = G4HadronicParameters::Instance()->GetMinEnergyTransitionQGS_FTF();
 54   theModel = new G4TheoFSGenerator("QGSP");
 55 
 56   G4QGSModel< G4QGSParticipants >* theStringModel = 
 57     new G4QGSModel< G4QGSParticipants >;
 58   G4ExcitedStringDecay* theStringDecay = 
 59     new G4ExcitedStringDecay(new G4QGSMFragmentation);
 60   theStringModel->SetFragmentationModel(theStringDecay);
 61 
 62   G4GeneratorPrecompoundInterface* theCascade = 
 63     new G4GeneratorPrecompoundInterface();
 64 
 65   theModel->SetTransport(theCascade);
 66   theModel->SetHighEnergyGenerator(theStringModel);
 67   if (quasiElastic)
 68     {
 69       theModel->SetQuasiElasticChannel(new G4QuasiElasticChannel());
 70     } 
 71 }
 72 
 73 G4QGSPNeutronBuilder::~G4QGSPNeutronBuilder() 
 74 {
 75 }
 76 
 77 void G4QGSPNeutronBuilder::
 78 Build(G4HadronInelasticProcess * aP)
 79 {
 80   theModel->SetMinEnergy(theMin);
 81   theModel->SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
 82   aP->RegisterMe(theModel);
 83    aP->AddDataSet(new G4NeutronInelasticXS());
 84 }
 85