G4AdjointeIonisationModel Class Reference

#include <G4AdjointeIonisationModel.hh>

Inheritance diagram for G4AdjointeIonisationModel:

Collaboration diagram for G4AdjointeIonisationModel:

Public Member Functions
	G4AdjointeIonisationModel ()
virtual	~G4AdjointeIonisationModel ()
virtual void	SampleSecondaries (const G4Track &aTrack, G4bool IsScatProjToProjCase, G4ParticleChange *fParticleChange)
virtual G4double	DiffCrossSectionPerAtomPrimToSecond (G4double kinEnergyProj, G4double kinEnergyProd, G4double Z, G4double A=0.)
Public Member Functions inherited from G4VEmAdjointModel
	G4VEmAdjointModel (const G4String &nam)
virtual	~G4VEmAdjointModel ()
virtual G4double	AdjointCrossSection (const G4MaterialCutsCouple *aCouple, G4double primEnergy, G4bool IsScatProjToProjCase)
virtual G4double	GetAdjointCrossSection (const G4MaterialCutsCouple *aCouple, G4double primEnergy, G4bool IsScatProjToProjCase)
virtual G4double	DiffCrossSectionPerAtomPrimToScatPrim (G4double kinEnergyProj, G4double kinEnergyScatProj, G4double Z, G4double A=0.)
virtual G4double	DiffCrossSectionPerVolumePrimToSecond (const G4Material *aMaterial, G4double kinEnergyProj, G4double kinEnergyProd)
virtual G4double	DiffCrossSectionPerVolumePrimToScatPrim (const G4Material *aMaterial, G4double kinEnergyProj, G4double kinEnergyScatProj)
virtual G4double	GetSecondAdjEnergyMaxForScatProjToProjCase (G4double PrimAdjEnergy)
virtual G4double	GetSecondAdjEnergyMinForScatProjToProjCase (G4double PrimAdjEnergy, G4double Tcut=0)
virtual G4double	GetSecondAdjEnergyMaxForProdToProjCase (G4double PrimAdjEnergy)
virtual G4double	GetSecondAdjEnergyMinForProdToProjCase (G4double PrimAdjEnergy)
void	DefineCurrentMaterial (const G4MaterialCutsCouple *couple)
std::vector< std::vector< double > *>	ComputeAdjointCrossSectionVectorPerAtomForSecond (G4double kinEnergyProd, G4double Z, G4double A=0., G4int nbin_pro_decade=10)
std::vector< std::vector< double > *>	ComputeAdjointCrossSectionVectorPerAtomForScatProj (G4double kinEnergyProd, G4double Z, G4double A=0., G4int nbin_pro_decade=10)
std::vector< std::vector< double > *>	ComputeAdjointCrossSectionVectorPerVolumeForSecond (G4Material *aMaterial, G4double kinEnergyProd, G4int nbin_pro_decade=10)
std::vector< std::vector< double > *>	ComputeAdjointCrossSectionVectorPerVolumeForScatProj (G4Material *aMaterial, G4double kinEnergyProd, G4int nbin_pro_decade=10)
void	SetCSMatrices (std::vector< G4AdjointCSMatrix * > *Vec1CSMatrix, std::vector< G4AdjointCSMatrix * > *Vec2CSMatrix)
G4ParticleDefinition *	GetAdjointEquivalentOfDirectPrimaryParticleDefinition ()
G4ParticleDefinition *	GetAdjointEquivalentOfDirectSecondaryParticleDefinition ()
G4double	GetHighEnergyLimit ()
G4double	GetLowEnergyLimit ()
void	SetHighEnergyLimit (G4double aVal)
void	SetLowEnergyLimit (G4double aVal)
void	DefineDirectEMModel (G4VEmModel *aModel)
void	SetAdjointEquivalentOfDirectPrimaryParticleDefinition (G4ParticleDefinition *aPart)
void	SetAdjointEquivalentOfDirectSecondaryParticleDefinition (G4ParticleDefinition *aPart)
void	SetSecondPartOfSameType (G4bool aBool)
G4bool	GetSecondPartOfSameType ()
void	SetUseMatrix (G4bool aBool)
void	SetUseMatrixPerElement (G4bool aBool)
void	SetUseOnlyOneMatrixForAllElements (G4bool aBool)
void	SetApplyCutInRange (G4bool aBool)
G4bool	GetUseMatrix ()
G4bool	GetUseMatrixPerElement ()
G4bool	GetUseOnlyOneMatrixForAllElements ()
G4bool	GetApplyCutInRange ()
G4String	GetName ()
virtual void	SetCSBiasingFactor (G4double aVal)

Private Member Functions
G4double	DiffCrossSectionMoller (G4double kinEnergyProj, G4double kinEnergyProd)

Private Attributes
G4bool	WithRapidSampling

Additional Inherited Members
Protected Member Functions inherited from G4VEmAdjointModel
G4double	DiffCrossSectionFunction1 (G4double kinEnergyProj)
G4double	DiffCrossSectionFunction2 (G4double kinEnergyProj)
G4double	DiffCrossSectionPerVolumeFunctionForIntegrationOverEkinProj (G4double EkinProd)
G4double	SampleAdjSecEnergyFromCSMatrix (size_t MatrixIndex, G4double prim_energy, G4bool IsScatProjToProjCase)
G4double	SampleAdjSecEnergyFromCSMatrix (G4double prim_energy, G4bool IsScatProjToProjCase)
void	SelectCSMatrix (G4bool IsScatProjToProjCase)
virtual G4double	SampleAdjSecEnergyFromDiffCrossSectionPerAtom (G4double prim_energy, G4bool IsScatProjToProjCase)
virtual void	CorrectPostStepWeight (G4ParticleChange *fParticleChange, G4double old_weight, G4double adjointPrimKinEnergy, G4double projectileKinEnergy, G4bool IsScatProjToProjCase)
Protected Attributes inherited from G4VEmAdjointModel
G4VEmModel *	theDirectEMModel
G4VParticleChange *	pParticleChange
const G4String	name
G4int	ASelectedNucleus
G4int	ZSelectedNucleus
G4Material *	SelectedMaterial
G4double	kinEnergyProdForIntegration
G4double	kinEnergyScatProjForIntegration
G4double	kinEnergyProjForIntegration
std::vector< G4AdjointCSMatrix *> *	pOnCSMatrixForProdToProjBackwardScattering
std::vector< G4AdjointCSMatrix *> *	pOnCSMatrixForScatProjToProjBackwardScattering
std::vector< G4double >	CS_Vs_ElementForScatProjToProjCase
std::vector< G4double >	CS_Vs_ElementForProdToProjCase
G4double	lastCS
G4double	lastAdjointCSForScatProjToProjCase
G4double	lastAdjointCSForProdToProjCase
G4ParticleDefinition *	theAdjEquivOfDirectPrimPartDef
G4ParticleDefinition *	theAdjEquivOfDirectSecondPartDef
G4ParticleDefinition *	theDirectPrimaryPartDef
G4bool	second_part_of_same_type
G4double	preStepEnergy
G4Material *	currentMaterial
G4MaterialCutsCouple *	currentCouple
size_t	currentMaterialIndex
size_t	currentCoupleIndex
G4double	currentTcutForDirectPrim
G4double	currentTcutForDirectSecond
G4bool	ApplyCutInRange
G4double	mass_ratio_product
G4double	mass_ratio_projectile
G4double	HighEnergyLimit
G4double	LowEnergyLimit
G4double	CS_biasing_factor
G4bool	UseMatrix
G4bool	UseMatrixPerElement
G4bool	UseOnlyOneMatrixForAllElements
size_t	indexOfUsedCrossSectionMatrix
size_t	model_index

Detailed Description

Definition at line 52 of file G4AdjointeIonisationModel.hh.

Constructor & Destructor Documentation

G4AdjointeIonisationModel()

G4AdjointeIonisationModel::G4AdjointeIonisationModel

(

)

Definition at line 42 of file G4AdjointeIonisationModel.cc.

                                                    :
 G4VEmAdjointModel("Inv_eIon_model")

{
  
  UseMatrix =true;
  UseMatrixPerElement = true;
  ApplyCutInRange = true;
  UseOnlyOneMatrixForAllElements = true;
  CS_biasing_factor =1.;
  WithRapidSampling = false; 
  
  theAdjEquivOfDirectPrimPartDef =G4AdjointElectron::AdjointElectron();
  theAdjEquivOfDirectSecondPartDef=G4AdjointElectron::AdjointElectron();
  theDirectPrimaryPartDef=G4Electron::Electron();
  second_part_of_same_type=true;
}

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~G4AdjointeIonisationModel()

G4AdjointeIonisationModel::~G4AdjointeIonisationModel ( )

virtual

Definition at line 61 of file G4AdjointeIonisationModel.cc.

{;}

Member Function Documentation

DiffCrossSectionMoller()

G4double G4AdjointeIonisationModel::DiffCrossSectionMoller ( G4double  kinEnergyProj, G4double  kinEnergyProd  )

private

Definition at line 198 of file G4AdjointeIonisationModel.cc.

                                                                                                       {

  G4double energy = kinEnergyProj + electron_mass_c2;
  G4double x   = kinEnergyProd/kinEnergyProj;
  G4double gam    = energy/electron_mass_c2;
  G4double gamma2 = gam*gam;
  G4double beta2  = 1.0 - 1.0/gamma2;
  
  G4double gg = (2.0*gam - 1.0)/gamma2;
  G4double y = 1.0 - x;
  G4double fac=twopi_mc2_rcl2/electron_mass_c2;
  G4double dCS = fac*( 1.-gg + ((1.0 - gg*x)/(x*x)) 
               + ((1.0 - gg*y)/(y*y)))/(beta2*(gam-1));
  return dCS/kinEnergyProj;
  
 

}  

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DiffCrossSectionPerAtomPrimToSecond()

G4double G4AdjointeIonisationModel::DiffCrossSectionPerAtomPrimToSecond ( G4double  kinEnergyProj, G4double  kinEnergyProd, G4double  Z, G4double  A = 0.  )

virtual

Reimplemented from G4VEmAdjointModel.

Definition at line 176 of file G4AdjointeIonisationModel.cc.

{
 G4double dSigmadEprod=0;
 G4double Emax_proj = GetSecondAdjEnergyMaxForProdToProjCase(kinEnergyProd);
 G4double Emin_proj = GetSecondAdjEnergyMinForProdToProjCase(kinEnergyProd);
 
 
 if (kinEnergyProj>Emin_proj && kinEnergyProj<=Emax_proj){ //the produced particle should have a kinetic energy smaller than the projectile 
    dSigmadEprod=Z*DiffCrossSectionMoller(kinEnergyProj,kinEnergyProd);
 }
 return dSigmadEprod;   
 
 
 
}

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SampleSecondaries()

void G4AdjointeIonisationModel::SampleSecondaries ( const G4Track &  aTrack, G4bool  IsScatProjToProjCase, G4ParticleChange *  fParticleChange  )

virtual

Implements G4VEmAdjointModel.

Definition at line 65 of file G4AdjointeIonisationModel.cc.

{ 


 const G4DynamicParticle* theAdjointPrimary =aTrack.GetDynamicParticle();
  
 //Elastic inverse scattering 
 //---------------------------------------------------------
 G4double adjointPrimKinEnergy = theAdjointPrimary->GetKineticEnergy();
 G4double adjointPrimP =theAdjointPrimary->GetTotalMomentum();

 if (adjointPrimKinEnergy>HighEnergyLimit*0.999){
    return;
 }
 
 //Sample secondary energy
 //-----------------------
 G4double projectileKinEnergy;
 if (!WithRapidSampling ) { //used by default
    projectileKinEnergy = SampleAdjSecEnergyFromCSMatrix(adjointPrimKinEnergy, IsScatProjToProjCase);
    
    CorrectPostStepWeight(fParticleChange, 
                  aTrack.GetWeight(), 
                  adjointPrimKinEnergy,
                  projectileKinEnergy,
                  IsScatProjToProjCase); //Caution !!!this weight correction should be always applied
 }
  else { //only  for test at the moment
    
    G4double Emin,Emax;
    if (IsScatProjToProjCase) {
        Emin=GetSecondAdjEnergyMinForScatProjToProjCase(adjointPrimKinEnergy,currentTcutForDirectSecond);
        Emax=GetSecondAdjEnergyMaxForScatProjToProjCase(adjointPrimKinEnergy);
    }
    else {
        Emin=GetSecondAdjEnergyMinForProdToProjCase(adjointPrimKinEnergy);
        Emax=GetSecondAdjEnergyMaxForProdToProjCase(adjointPrimKinEnergy);
    }
    projectileKinEnergy = Emin*std::pow(Emax/Emin,G4UniformRand());
    
    
    
    lastCS=lastAdjointCSForScatProjToProjCase;
    if ( !IsScatProjToProjCase) lastCS=lastAdjointCSForProdToProjCase;
    
    G4double new_weight=aTrack.GetWeight();
    G4double used_diffCS=lastCS*std::log(Emax/Emin)/projectileKinEnergy;
    G4double needed_diffCS=adjointPrimKinEnergy/projectileKinEnergy;
    if (!IsScatProjToProjCase) needed_diffCS *=DiffCrossSectionPerVolumePrimToSecond(currentMaterial,projectileKinEnergy,adjointPrimKinEnergy);
    else needed_diffCS *=DiffCrossSectionPerVolumePrimToScatPrim(currentMaterial,projectileKinEnergy,adjointPrimKinEnergy);
    new_weight*=needed_diffCS/used_diffCS;
    fParticleChange->SetParentWeightByProcess(false);
    fParticleChange->SetSecondaryWeightByProcess(false);
    fParticleChange->ProposeParentWeight(new_weight);
    
  
 }  
                      
 
         
 //Kinematic: 
 //we consider a two body elastic scattering for the forward processes where the projectile knock on an e- at rest  and gives
 // him part of its  energy
 //----------------------------------------------------------------------------------------
 
 G4double projectileM0 = theAdjEquivOfDirectPrimPartDef->GetPDGMass();
 G4double projectileTotalEnergy = projectileM0+projectileKinEnergy;
 G4double projectileP2 = projectileTotalEnergy*projectileTotalEnergy - projectileM0*projectileM0;   
 
 
 
 //Companion
 //-----------
 G4double companionM0 = theAdjEquivOfDirectPrimPartDef->GetPDGMass();
 if (IsScatProjToProjCase) {
    companionM0=theAdjEquivOfDirectSecondPartDef->GetPDGMass();
 } 
 G4double companionTotalEnergy =companionM0+ projectileKinEnergy-adjointPrimKinEnergy;
 G4double companionP2 = companionTotalEnergy*companionTotalEnergy - companionM0*companionM0;    
 
 
 //Projectile momentum
 //--------------------
 G4double  P_parallel = (adjointPrimP*adjointPrimP +  projectileP2 - companionP2)/(2.*adjointPrimP);
 G4double  P_perp = std::sqrt( projectileP2 -  P_parallel*P_parallel);
 G4ThreeVector dir_parallel=theAdjointPrimary->GetMomentumDirection();
 G4double phi =G4UniformRand()*2.*3.1415926;
 G4ThreeVector projectileMomentum = G4ThreeVector(P_perp*std::cos(phi),P_perp*std::sin(phi),P_parallel);
 projectileMomentum.rotateUz(dir_parallel);
 
 
 
 if (!IsScatProjToProjCase ){ //kill the primary and add a secondary
    fParticleChange->ProposeTrackStatus(fStopAndKill);
    fParticleChange->AddSecondary(new G4DynamicParticle(theAdjEquivOfDirectPrimPartDef,projectileMomentum));
    //G4cout<<"projectileMomentum "<<projectileMomentum<<G4endl;
 }
 else {
    fParticleChange->ProposeEnergy(projectileKinEnergy);
    fParticleChange->ProposeMomentumDirection(projectileMomentum.unit());
 }  
        

  

}

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Member Data Documentation

WithRapidSampling

G4bool G4AdjointeIonisationModel::WithRapidSampling

private

Definition at line 78 of file G4AdjointeIonisationModel.hh.

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

• G4AdjointeIonisationModel.hh
• G4AdjointeIonisationModel.cc