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Geant4/physics_lists/builders/src/G4QGSPPionBuilder.cc

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 25 //
 26 //
 27 //---------------------------------------------------------------------------
 28 //
 29 // ClassName:   G4QGSPPionBuilder
 30 //
 31 // Author: 2010 G.Folger
 32 //  devired from G4QGSPPiKBuilder
 33 //
 34 // Modified:
 35 // 17.11.2010 G.Folger, use G4CrossSectionPairGG for relativistic rise of cross
 36 //             section at high energies.
 37 // 30.03.2009 V.Ivanchenko create cross section by new
 38 // 12.04.2017 A.Dotti move to new design with base class
 39 //
 40 //----------------------------------------------------------------------------
 41 //
 42 #include "G4QGSPPionBuilder.hh"
 43 #include "G4SystemOfUnits.hh"
 44 #include "G4ParticleDefinition.hh"
 45 #include "G4ParticleTable.hh"
 46 #include "G4ProcessManager.hh"
 47 #include "G4BGGPionInelasticXS.hh"
 48 #include "G4HadronicParameters.hh"
 49 
 50 
 51 G4QGSPPionBuilder::
 52 G4QGSPPionBuilder(G4bool quasiElastic) 
 53 {
 54    theMin = G4HadronicParameters::Instance()->GetMinEnergyTransitionQGS_FTF();
 55    theModel = new G4TheoFSGenerator("QGSP");
 56 
 57    G4QGSModel< G4QGSParticipants >* theStringModel = 
 58      new G4QGSModel< G4QGSParticipants >;
 59    G4ExcitedStringDecay* theStringDecay = 
 60      new G4ExcitedStringDecay(new G4QGSMFragmentation);
 61    theStringModel->SetFragmentationModel(theStringDecay);
 62 
 63    G4GeneratorPrecompoundInterface* theCascade = 
 64      new G4GeneratorPrecompoundInterface();
 65 
 66    theModel->SetTransport(theCascade);
 67    theModel->SetHighEnergyGenerator(theStringModel);
 68    if (quasiElastic)
 69    {
 70      theModel->SetQuasiElasticChannel(new G4QuasiElasticChannel());
 71    } 
 72 }
 73  
 74 G4QGSPPionBuilder::
 75 ~G4QGSPPionBuilder() 
 76 {
 77 }
 78 
 79 void G4QGSPPionBuilder::
 80 Build(G4HadronInelasticProcess * aP)
 81 {
 82   theModel->SetMinEnergy(theMin);
 83   theModel->SetMaxEnergy( G4HadronicParameters::Instance()->GetMaxEnergy() );
 84   if ( aP->GetParticleDefinition() == G4PionPlus::Definition() ) { 
 85     aP->AddDataSet( new G4BGGPionInelasticXS( G4PionPlus::Definition() ) );
 86   } else if ( aP->GetParticleDefinition() == G4PionMinus::Definition() ) { 
 87     aP->AddDataSet( new G4BGGPionInelasticXS( G4PionMinus::Definition() ) );
 88   }
 89   aP->RegisterMe(theModel);
 90 }
 91