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

(

const G4String &

modelName = "Parton String Model"

)

Definition at line 48 of file G4VPartonStringModel.cc.

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

~G4VPartonStringModel()

G4VPartonStringModel::~G4VPartonStringModel ( )

virtual

Definition at line 58 of file G4VPartonStringModel.cc.

{
}

Member Function Documentation

EnergyAndMomentumCorrector()

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

protected

GetStrings()

virtual G4ExcitedStringVector * G4VPartonStringModel::GetStrings ( )

protectedpure virtual

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

Referenced by Scatter().

GetWoundedNucleus()

virtual G4V3DNucleus * G4VPartonStringModel::GetWoundedNucleus ( ) const

pure virtual

Implements G4VHighEnergyGenerator.

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

Referenced by Scatter().

Init()

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().

ModelDescription()

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

virtual

Reimplemented from G4VHighEnergyGenerator.

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

Definition at line 171 of file G4VPartonStringModel.cc.

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

Scatter()

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

virtual

Implements G4VHighEnergyGenerator.

Definition at line 62 of file G4VPartonStringModel.cc.

{  
  G4ExcitedStringVector * strings = NULL;
 
  G4DynamicParticle thePrimary=aPrimary;
  
  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.);
 
  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();   
 
//#define debug_PartonStringModel
#ifdef debug_PartonStringModel
 
     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: strE, hit nucleons, Primary, SumStringE, nucleus intial, nucleus final, excitation estimate "
            << stringEnergy << " "    << hits << ", " << Ptmp.e() << ", "<< SumStringMom.e() << ", "
            << initial_mass<< ", " << final_mass<< ", "  << 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;
 
    //G4cout<<"G4endl<<"G4VPartonStringModel:: Final Result, Size "<<theResult->size()<<G4endl;
 
   SumMass=0.;
    //G4LorentzVector SumP(0.,0.,0.,0.);
   for ( unsigned int i=0; i < theResult->size(); i++)
   {
    SumMass+=(*theResult)[i]->GetDefinition()->GetPDGMass();
     //SumP+=(*theResult)[i]->Get4Momentum();
     //G4cout<<i<<" : "<<(*theResult)[i]->GetDefinition()->GetParticleName();
     //G4cout<<"p= " << (*theResult)[i]->Get4Momentum()<<" m= "<<(*theResult)[i]->Get4Momentum().mag()<<G4endl;
   }
 
     //G4cout<<"SumP "<<SumP<<G4endl;
  } while(SumMass > InvMass);
 
  std::for_each(strings->begin(), strings->end(), DeleteString() );
  delete strings;
 
  return theResult;
}

SetFragmentationModel()

void G4VPartonStringModel::SetFragmentationModel ( G4VStringFragmentation *  aModel )

inline

Definition at line 86 of file G4VPartonStringModel.hh.

{
  stringFragmentationModel = aModel;
}

Referenced by G4BertiniElectroNuclearBuilder::Build(), G4ElectroNuclearBuilder::Build(), G4MiscQGSCBuilder::Build(), G4FTFBuilder::BuildModel(), G4QGSBuilder::BuildModel(), G4ElectroNuclearReaction::G4ElectroNuclearReaction(), G4ElectroVDNuclearModel::G4ElectroVDNuclearModel(), G4FTFBinaryKaonBuilder::G4FTFBinaryKaonBuilder(), G4FTFBinaryNeutronBuilder::G4FTFBinaryNeutronBuilder(), G4FTFBinaryPiKBuilder::G4FTFBinaryPiKBuilder(), G4FTFBinaryPionBuilder::G4FTFBinaryPionBuilder(), G4FTFBinaryProtonBuilder::G4FTFBinaryProtonBuilder(), G4FTFCNeutronBuilder::G4FTFCNeutronBuilder(), G4FTFCPiKBuilder::G4FTFCPiKBuilder(), G4FTFCProtonBuilder::G4FTFCProtonBuilder(), G4FTFPAntiBarionBuilder::G4FTFPAntiBarionBuilder(), G4FTFPNeutronBuilder::G4FTFPNeutronBuilder(), G4FTFPPiKBuilder::G4FTFPPiKBuilder(), G4FTFPProtonBuilder::G4FTFPProtonBuilder(), G4HadronicAbsorptionFritiof::G4HadronicAbsorptionFritiof(), G4HyperonFTFPBuilder::G4HyperonFTFPBuilder(), G4MuonVDNuclearModel::G4MuonVDNuclearModel(), G4QGSBinaryNeutronBuilder::G4QGSBinaryNeutronBuilder(), G4QGSBinaryPiKBuilder::G4QGSBinaryPiKBuilder(), G4QGSBinaryProtonBuilder::G4QGSBinaryProtonBuilder(), G4QGSC_CHIPSNeutronBuilder::G4QGSC_CHIPSNeutronBuilder(), G4QGSC_CHIPSPiKBuilder::G4QGSC_CHIPSPiKBuilder(), G4QGSC_CHIPSProtonBuilder::G4QGSC_CHIPSProtonBuilder(), G4QGSC_QGSCNeutronBuilder::G4QGSC_QGSCNeutronBuilder(), G4QGSC_QGSCPiKBuilder::G4QGSC_QGSCPiKBuilder(), G4QGSC_QGSCProtonBuilder::G4QGSC_QGSCProtonBuilder(), G4QGSCEflowNeutronBuilder::G4QGSCEflowNeutronBuilder(), G4QGSCEflowPiKBuilder::G4QGSCEflowPiKBuilder(), G4QGSCEflowProtonBuilder::G4QGSCEflowProtonBuilder(), G4QGSCNeutronBuilder::G4QGSCNeutronBuilder(), G4QGSCPiKBuilder::G4QGSCPiKBuilder(), G4QGSCProtonBuilder::G4QGSCProtonBuilder(), G4QGSPNeutronBuilder::G4QGSPNeutronBuilder(), G4QGSPPiKBuilder::G4QGSPPiKBuilder(), G4QGSPPionBuilder::G4QGSPPionBuilder(), G4QGSPProtonBuilder::G4QGSPProtonBuilder(), and TheoModelFactory< C, S, F >::New().

SetThisPointer()

void G4VPartonStringModel::SetThisPointer ( G4VPartonStringModel *  aPointer )

inlineprotected

Definition at line 92 of file G4VPartonStringModel.hh.

{
    theThis=aPointer;
}

Referenced by G4FTFModel::G4FTFModel().

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

• G4VPartonStringModel.hh
• G4VPartonStringModel.cc