G4VPartonStringModel Class Reference

#include <G4VPartonStringModel.hh>

Inheritance diagram for G4VPartonStringModel:

Public Member Functions
	G4VPartonStringModel (const G4String &modelName="Parton String Model")
virtual	~G4VPartonStringModel ()
void	SetFragmentationModel (G4VStringFragmentation *aModel)
G4KineticTrackVector *	Scatter (const G4Nucleus &theNucleus, const G4DynamicParticle &thePrimary)
virtual G4V3DNucleus *	GetWoundedNucleus () const =0
virtual void	ModelDescription (std::ostream &outFile) const
virtual G4V3DNucleus *	GetProjectileNucleus () const
Public Member Functions inherited from G4VHighEnergyGenerator
	G4VHighEnergyGenerator (const G4String &modelName="High Energy Generator")
virtual	~G4VHighEnergyGenerator ()
std::pair< G4double, G4double >	GetEnergyMomentumCheckLevels () const
void	SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double AbsoluteLevel)
virtual G4String	GetModelName () const

Protected Member Functions
virtual void	Init (const G4Nucleus &theNucleus, const G4DynamicParticle &thePrimary)=0
virtual G4ExcitedStringVector *	GetStrings ()=0
void	SetThisPointer (G4VPartonStringModel *aPointer)
G4bool	EnergyAndMomentumCorrector (G4KineticTrackVector *Output, G4LorentzVector &TotalCollisionMomentum)

Detailed Description

Definition at line 51 of file G4VPartonStringModel.hh.

Constructor & Destructor Documentation

G4VPartonStringModel::G4VPartonStringModel

(

const G4String &

modelName = "Parton String Model"

)

Definition at line 49 of file G4VPartonStringModel.cc.

References G4ShortLivedConstructor::ConstructParticle().

    : G4VHighEnergyGenerator(modelName),
      stringFragmentationModel(0),
      theThis(0)
{
//  Make shure Shotrylived partyicles are constructed.
    G4ShortLivedConstructor ShortLived;
    ShortLived.ConstructParticle();
}

G4VPartonStringModel::~G4VPartonStringModel ( )

virtual

Definition at line 59 of file G4VPartonStringModel.cc.

{
}

Member Function Documentation

G4bool G4VPartonStringModel::EnergyAndMomentumCorrector ( G4KineticTrackVector *  Output, G4LorentzVector &  TotalCollisionMomentum  )

protected

G4V3DNucleus * G4VPartonStringModel::GetProjectileNucleus ( ) const

virtual

Reimplemented from G4VHighEnergyGenerator.

Reimplemented in G4FTFModel, G4QGSModel< ParticipantType >, G4QGSModel< G4GammaParticipants >, and G4QGSModel< G4QGSParticipants >.

Definition at line 213 of file G4VPartonStringModel.cc.

{ return 0;}

virtual G4ExcitedStringVector* G4VPartonStringModel::GetStrings ( )

protectedpure virtual

Implemented in G4FTFModel, G4QGSModel< ParticipantType >, G4QGSModel< G4GammaParticipants >, and G4QGSModel< G4QGSParticipants >.

Referenced by Scatter().

virtual G4V3DNucleus* G4VPartonStringModel::GetWoundedNucleus ( ) const

pure virtual

Implements G4VHighEnergyGenerator.

Implemented in G4FTFModel, G4QGSModel< ParticipantType >, G4QGSModel< G4GammaParticipants >, and G4QGSModel< G4QGSParticipants >.

Referenced by Scatter().

virtual void G4VPartonStringModel::Init ( const G4Nucleus &  theNucleus, const G4DynamicParticle &  thePrimary  )

protectedpure virtual

Implemented in G4FTFModel, G4QGSModel< ParticipantType >, G4QGSModel< G4GammaParticipants >, and G4QGSModel< G4QGSParticipants >.

Referenced by Scatter().

void G4VPartonStringModel::ModelDescription ( std::ostream &  outFile ) const

virtual

Reimplemented from G4VHighEnergyGenerator.

Reimplemented in G4FTFModel, G4QGSModel< ParticipantType >, G4QGSModel< G4GammaParticipants >, and G4QGSModel< G4QGSParticipants >.

Definition at line 208 of file G4VPartonStringModel.cc.

References G4VHighEnergyGenerator::GetModelName().

{
    outFile << GetModelName() << " has no description yet.\n";
}

G4KineticTrackVector * G4VPartonStringModel::Scatter ( const G4Nucleus &  theNucleus, const G4DynamicParticle &  thePrimary  )

virtual

Implements G4VHighEnergyGenerator.

Definition at line 63 of file G4VPartonStringModel.cc.

References G4Nucleon::AreYouHit(), CLHEP::HepLorentzVector::e(), G4VStringFragmentation::FragmentStrings(), G4cout, G4endl, G4Nucleon::Get4Momentum(), G4DynamicParticle::Get4Momentum(), G4Nucleus::GetA_asInt(), G4V3DNucleus::GetCharge(), G4Nucleon::GetDefinition(), G4DynamicParticle::GetDefinition(), G4IonTable::GetIonMass(), G4ParticleTable::GetIonTable(), G4DynamicParticle::GetMass(), G4V3DNucleus::GetMassNumber(), G4DynamicParticle::GetMomentum(), G4V3DNucleus::GetNextNucleon(), G4ParticleDefinition::GetParticleName(), G4ParticleTable::GetParticleTable(), GetStrings(), GetWoundedNucleus(), G4Nucleus::GetZ_asInt(), Init(), CLHEP::HepLorentzRotation::inverse(), CLHEP::HepLorentzVector::mag(), CLHEP::HepLorentzVector::phi(), G4Proton::Proton(), CLHEP::HepLorentzRotation::rotateY(), CLHEP::HepLorentzRotation::rotateZ(), G4DynamicParticle::Set4Momentum(), G4V3DNucleus::StartLoop(), CLHEP::HepLorentzVector::theta(), and CLHEP::HepLorentzVector::vect().

{  
  G4ExcitedStringVector * strings = NULL;

  G4DynamicParticle thePrimary=aPrimary;

#ifdef debug_PartonStringModel
  G4cout<<"Parton-String model is runnung ------------"<<G4endl;
  G4cout<<"Projectile Name Mass "<<thePrimary.GetDefinition()->GetParticleName()<<" "
        <<thePrimary.GetMass()<<G4endl;
  G4cout<<"           Momentum  "<<thePrimary.Get4Momentum()<<G4endl;
  G4cout<<"Target nucleus   A Z "<<theNucleus.GetA_asInt()<<" "
                                 <<theNucleus.GetZ_asInt()<<G4endl<<G4endl; 
#endif
  
  G4LorentzRotation toZ;
  G4LorentzVector Ptmp=thePrimary.Get4Momentum();
  toZ.rotateZ(-1*Ptmp.phi());
  toZ.rotateY(-1*Ptmp.theta());
  thePrimary.Set4Momentum(toZ*Ptmp);
  G4LorentzRotation toLab(toZ.inverse());

  G4int attempts = 0, maxAttempts=20;
  while ( strings  == NULL )
  {
    if (attempts++ > maxAttempts ) 
    {
        throw G4HadronicException(__FILE__, __LINE__, 
            "G4VPartonStringModel::Scatter(): fails to generate strings");
    }
    theThis->Init(theNucleus,thePrimary);

    strings = GetStrings();
  }
  
  G4double stringEnergy(0);
  G4LorentzVector SumStringMom(0.,0.,0.,0.);

#ifdef debug_PartonStringModel
  G4cout<<"Parton-String model: Number of produced strings "<<strings->size()<<G4endl;
#endif

  for ( unsigned int astring=0; astring < strings->size(); astring++)
  {
//    rotate string to lab frame, models have it aligned to z
    stringEnergy += (*strings)[astring]->GetLeftParton()->Get4Momentum().t();
    stringEnergy += (*strings)[astring]->GetRightParton()->Get4Momentum().t();
    (*strings)[astring]->LorentzRotate(toLab);
    SumStringMom+=(*strings)[astring]->Get4Momentum();
  }

  G4double InvMass=SumStringMom.mag();   

#ifdef debug_PartonStringModel
  G4cout<<"Parton-String model: SumStringMom "<<SumStringMom<<G4endl;
 
     G4V3DNucleus * fancynucleus=theThis->GetWoundedNucleus();
  
       // loop over wounded nucleus
     G4int hits(0), charged_hits(0);
     G4ThreeVector hitNucleonMomentum(0.,0.,0.);
     G4Nucleon * theCurrentNucleon = fancynucleus->StartLoop() ? 
                                     fancynucleus->GetNextNucleon() : NULL;
     while( theCurrentNucleon )
     {
       if(theCurrentNucleon->AreYouHit()) 
       {
         hits++;
         hitNucleonMomentum += theCurrentNucleon->Get4Momentum().vect();
         if ( theCurrentNucleon->GetDefinition() == G4Proton::Proton() )  ++charged_hits;
       }
       theCurrentNucleon = fancynucleus->GetNextNucleon();
     }
     
     G4int initialZ=fancynucleus->GetCharge();
     G4int initialA=fancynucleus->GetMassNumber();
     G4double initial_mass=
       G4ParticleTable::GetParticleTable()->GetIonTable()->GetIonMass(initialZ,initialA);
     G4double final_mass = 
       G4ParticleTable::GetParticleTable()->GetIonTable()->GetIonMass(
                                   initialZ-charged_hits, initialA-hits);
     G4cout << "G4VPSM:             "                   <<G4endl
            << "strE                "<<stringEnergy     <<G4endl
            << "hit nucleons        "<<hits             <<G4endl
            << "Primary             "<<Ptmp.e()         <<G4endl
            << "SumStringE          "<<SumStringMom.e() <<G4endl
            << "Nucleus intial      "<<initial_mass     <<G4endl
            << "Nucleus final       "<<final_mass       <<G4endl
            << "Excitation estimate "
            <<Ptmp.e() + initial_mass - final_mass - stringEnergy  << G4endl;
     G4cout << "momentum balance    " 
            <<  thePrimary.GetMomentum() + hitNucleonMomentum - 
                 SumStringMom.vect()<< G4endl;
#endif

//  Fragment strings

  G4KineticTrackVector * theResult = 0;
  G4double SumMass(0.); 
  attempts = 0; 
  maxAttempts=100;
  do 
  {     
   attempts++;   
   if(theResult != 0)
   {
    std::for_each(theResult->begin(), theResult->end(), DeleteKineticTrack());
    delete theResult;
   }
   theResult = stringFragmentationModel->FragmentStrings(strings);
   if(attempts > maxAttempts ) break;

#ifdef debug_PartonStringModel
  G4cout<<"Parton-String model: Number of produced particles "<<theResult->size()<<G4endl;
   G4LorentzVector SumPsecondr(0.,0.,0.,0.);
#endif

   SumMass=0.;

   for ( unsigned int i=0; i < theResult->size(); i++)
   {
    SumMass+=(*theResult)[i]->GetDefinition()->GetPDGMass();
     //SumP+=(*theResult)[i]->Get4Momentum();
#ifdef debug_PartonStringModel
  G4cout<<i<<" : "<<(*theResult)[i]->GetDefinition()->GetParticleName()<<" "
                  <<(*theResult)[i]->Get4Momentum()<<" "
                  <<(*theResult)[i]->Get4Momentum().mag()<<G4endl;
  SumPsecondr+=(*theResult)[i]->Get4Momentum();
#endif
   }
#ifdef debug_PartonStringModel
  G4cout<<"SumP secondaries "<<SumPsecondr<<G4endl;
#endif
  } while(SumMass > InvMass);

  std::for_each(strings->begin(), strings->end(), DeleteString() );
  delete strings;

#ifdef debug_PartonStringModel
  G4cout<<"End of string model work ------------"<<G4endl<<G4endl;
#endif
  return theResult;
}

void G4VPartonStringModel::SetFragmentationModel ( G4VStringFragmentation *  aModel )

inline

Definition at line 86 of file G4VPartonStringModel.hh.

Referenced by G4BertiniElectroNuclearBuilder::Build(), G4FTFBuilder::BuildModel(), G4QGSBuilder::BuildModel(), B03PhysicsList::ConstructHad(), DMXPhysicsList::ConstructHad(), exrdmPhysListHadron::ConstructProcess(), GammaRayTelIonPhysics::ConstructProcess(), GammaRayTelHadronPhysics::ConstructProcess(), G4ElectroVDNuclearModel::G4ElectroVDNuclearModel(), G4FTFBinaryKaonBuilder::G4FTFBinaryKaonBuilder(), G4FTFBinaryNeutronBuilder::G4FTFBinaryNeutronBuilder(), G4FTFBinaryPiKBuilder::G4FTFBinaryPiKBuilder(), G4FTFBinaryPionBuilder::G4FTFBinaryPionBuilder(), G4FTFBinaryProtonBuilder::G4FTFBinaryProtonBuilder(), G4FTFPAntiBarionBuilder::G4FTFPAntiBarionBuilder(), G4FTFPKaonBuilder::G4FTFPKaonBuilder(), G4FTFPNeutronBuilder::G4FTFPNeutronBuilder(), G4FTFPPiKBuilder::G4FTFPPiKBuilder(), G4FTFPPionBuilder::G4FTFPPionBuilder(), G4FTFPProtonBuilder::G4FTFPProtonBuilder(), G4HadronicAbsorptionFritiof::G4HadronicAbsorptionFritiof(), G4HyperonFTFPBuilder::G4HyperonFTFPBuilder(), G4MuonVDNuclearModel::G4MuonVDNuclearModel(), G4QGSBinaryKaonBuilder::G4QGSBinaryKaonBuilder(), G4QGSBinaryNeutronBuilder::G4QGSBinaryNeutronBuilder(), G4QGSBinaryPiKBuilder::G4QGSBinaryPiKBuilder(), G4QGSBinaryPionBuilder::G4QGSBinaryPionBuilder(), G4QGSBinaryProtonBuilder::G4QGSBinaryProtonBuilder(), G4QGSPNeutronBuilder::G4QGSPNeutronBuilder(), G4QGSPPiKBuilder::G4QGSPPiKBuilder(), G4QGSPPionBuilder::G4QGSPPionBuilder(), G4QGSPProtonBuilder::G4QGSPProtonBuilder(), and TheoModelFactory< C, S, F >::New().

{
  stringFragmentationModel = aModel;
}

void G4VPartonStringModel::SetThisPointer ( G4VPartonStringModel *  aPointer )

inlineprotected

Definition at line 92 of file G4VPartonStringModel.hh.

Referenced by G4FTFModel::G4FTFModel().

{
    theThis=aPointer;
}

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The documentation for this class was generated from the following files:

• G4VPartonStringModel.hh
• G4VPartonStringModel.cc