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Geant4/physics_lists/builders/src/G4FTFBinaryPionBuilder.cc

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 25 //
 26 //
 27 //---------------------------------------------------------------------------
 28 //
 29 // ClassName:   G4FTFBinaryPionBuilder
 30 //
 31 // Author: 2011 G.Folger
 32 //
 33 // Modified:
 34 // 18.11.2010 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 //
 38 //----------------------------------------------------------------------------
 39 //
 40 #include "G4FTFBinaryPionBuilder.hh"
 41 #include "G4SystemOfUnits.hh"
 42 #include "G4ParticleDefinition.hh"
 43 #include "G4ParticleTable.hh"
 44 #include "G4ProcessManager.hh"
 45 #include "G4BGGPionInelasticXS.hh"
 46 #include "G4HadronicParameters.hh"
 47 
 48 G4FTFBinaryPionBuilder::
 49 G4FTFBinaryPionBuilder(G4bool quasiElastic)
 50 {
 51   theMin = G4HadronicParameters::Instance()->GetMinEnergyTransitionFTF_Cascade();
 52   theMax = G4HadronicParameters::Instance()->GetMaxEnergy();
 53   theModel = new G4TheoFSGenerator("FTFB");
 54 
 55   G4FTFModel* theStringModel = new G4FTFModel;
 56   theStringModel->SetFragmentationModel(new G4ExcitedStringDecay());
 57 
 58   G4BinaryCascade* theCascade = new G4BinaryCascade;
 59   theModel->SetTransport(theCascade);
 60 
 61   theModel->SetHighEnergyGenerator(theStringModel);
 62   theModel->SetMinEnergy(theMin);
 63   theModel->SetMaxEnergy(theMax);
 64 
 65   if (quasiElastic) {
 66      theModel->SetQuasiElasticChannel(new G4QuasiElasticChannel());
 67   } 
 68 }
 69 
 70 G4FTFBinaryPionBuilder:: ~G4FTFBinaryPionBuilder()
 71 {
 72 }
 73 
 74 void G4FTFBinaryPionBuilder::
 75 Build(G4HadronInelasticProcess * aP)
 76 {
 77   theModel->SetMinEnergy(theMin);
 78   theModel->SetMaxEnergy(theMax);
 79   if ( aP->GetParticleDefinition() == G4PionPlus::Definition() ) { 
 80     aP->AddDataSet( new G4BGGPionInelasticXS( G4PionPlus::Definition() ) );
 81   } else if ( aP->GetParticleDefinition() == G4PionMinus::Definition() ) { 
 82     aP->AddDataSet( new G4BGGPionInelasticXS( G4PionMinus::Definition() ) );
 83   }
 84   aP->RegisterMe(theModel);
 85 }
 86