G4DNAPTBElasticModel Class Reference

The G4DNAPTBElasticModel class This class implements the elastic model for the DNA materials and precursors. More...

#include <G4DNAPTBElasticModel.hh>

Inheritance diagram for G4DNAPTBElasticModel:

Public Types
using	TriDimensionMap
using	VecMap

Public Member Functions
	G4DNAPTBElasticModel (const G4String &applyToMaterial="all", const G4ParticleDefinition *p=nullptr, const G4String &nam="DNAPTBElasticModel")
	G4DNAPTBElasticModel Constructor.
	~G4DNAPTBElasticModel () override=default
	~G4DNAPTBElasticModel Destructor
	G4DNAPTBElasticModel (G4DNAPTBElasticModel &)=delete
G4DNAPTBElasticModel &	operator= (const G4DNAPTBElasticModel &right)=delete
void	Initialise (const G4ParticleDefinition *particle, const G4DataVector &) override
	Initialise Mandatory method for every model class. The material/particle for which the model can be used have to be added here through the AddCrossSectionData method. Then the LoadCrossSectionData method must be called to trigger the load process. Scale factors to be applied to the cross section can be defined here.
G4double	CrossSectionPerVolume (const G4Material *material, const G4ParticleDefinition *p, G4double ekin, G4double emin, G4double emax) override
	CrossSectionPerVolume This method is mandatory for any model class. It finds and return the cross section value for the current material, particle and energy values. The number of molecule per volume is not used here but in the G4DNAModelInterface class.
void	SampleSecondaries (std::vector< G4DynamicParticle * > *, const G4MaterialCutsCouple *, const G4DynamicParticle *, G4double tmin, G4double tmax) override
	SampleSecondaries Method called after CrossSectionPerVolume if the process is the one which is selected (according to the sampling on the calculated path length). Here, the characteristics of the incident and created (if any) particle(s) are set (energy, momentum ...).
Public Member Functions inherited from G4VDNAModel
	G4VDNAModel (const G4String &nam, const G4String &applyToMaterial="")
	G4VDNAModel Constructeur of the G4VDNAModel class.
	~G4VDNAModel () override
	~G4VDNAModel
G4bool	IsMaterialDefine (const size_t &materialID)
	IsMaterialDefine Check if the given material is defined in the simulation.
G4bool	IsParticleExistingInModelForMaterial (const G4ParticleDefinition *particleName, const size_t &materialID)
	IsParticleExistingInModelForMaterial To check two things: 1- is the material existing in model ? 2- if yes, is the particle defined for that material ?
G4String	GetName ()
	GetName.
G4double	GetHighELimit (const size_t &materialID, const G4ParticleDefinition *particle)
	GetHighEnergyLimit.
G4double	GetLowELimit (const size_t &materialID, const G4ParticleDefinition *particle)
	GetLowEnergyLimit.
void	SetHighELimit (const size_t &materialID, const G4ParticleDefinition *particle, G4double lim)
	SetHighEnergyLimit.
void	SetLowELimit (const size_t &materialID, const G4ParticleDefinition *particle, G4double lim)
	SetLowEnergyLimit.
Public Member Functions inherited from G4VEmModel
	G4VEmModel (const G4String &nam)
virtual	~G4VEmModel ()
virtual void	InitialiseLocal (const G4ParticleDefinition *, G4VEmModel *masterModel)
virtual void	InitialiseForMaterial (const G4ParticleDefinition *, const G4Material *)
virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)
virtual G4double	ComputeDEDXPerVolume (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
virtual G4double	GetPartialCrossSection (const G4Material *, G4int level, const G4ParticleDefinition *, G4double kineticEnergy)
virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0., G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
virtual G4double	ComputeCrossSectionPerShell (const G4ParticleDefinition *, G4int Z, G4int shellIdx, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
virtual G4double	ChargeSquareRatio (const G4Track &)
virtual G4double	GetChargeSquareRatio (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
virtual G4double	GetParticleCharge (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
virtual void	StartTracking (G4Track *)
virtual void	CorrectionsAlongStep (const G4MaterialCutsCouple *, const G4DynamicParticle *, const G4double &length, G4double &eloss)
virtual G4double	Value (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy)
virtual G4double	MinPrimaryEnergy (const G4Material *, const G4ParticleDefinition *, G4double cut=0.0)
virtual G4double	MinEnergyCut (const G4ParticleDefinition *, const G4MaterialCutsCouple *)
virtual void	SetupForMaterial (const G4ParticleDefinition *, const G4Material *, G4double kineticEnergy)
virtual void	DefineForRegion (const G4Region *)
virtual void	FillNumberOfSecondaries (G4int &numberOfTriplets, G4int &numberOfRecoil)
virtual void	ModelDescription (std::ostream &outFile) const
void	InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)
std::vector< G4EmElementSelector * > *	GetElementSelectors ()
void	SetElementSelectors (std::vector< G4EmElementSelector * > *)
G4double	ComputeDEDX (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=DBL_MAX)
G4double	CrossSection (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
G4double	ComputeMeanFreePath (const G4ParticleDefinition *, G4double kineticEnergy, const G4Material *, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, const G4Element *, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
const G4Element *	SelectRandomAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
const G4Element *	SelectTargetAtom (const G4MaterialCutsCouple *, const G4ParticleDefinition *, G4double kineticEnergy, G4double logKineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
const G4Element *	SelectRandomAtom (const G4Material *, const G4ParticleDefinition *, G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)
const G4Element *	GetCurrentElement (const G4Material *mat=nullptr) const
G4int	SelectRandomAtomNumber (const G4Material *) const
const G4Isotope *	GetCurrentIsotope (const G4Element *elm=nullptr) const
G4int	SelectIsotopeNumber (const G4Element *) const
void	SetParticleChange (G4VParticleChange *, G4VEmFluctuationModel *f=nullptr)
void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)
G4ElementData *	GetElementData ()
G4PhysicsTable *	GetCrossSectionTable ()
G4VEmFluctuationModel *	GetModelOfFluctuations ()
G4VEmAngularDistribution *	GetAngularDistribution ()
G4VEmModel *	GetTripletModel ()
void	SetTripletModel (G4VEmModel *)
void	SetAngularDistribution (G4VEmAngularDistribution *)
G4double	HighEnergyLimit () const
G4double	LowEnergyLimit () const
G4double	HighEnergyActivationLimit () const
G4double	LowEnergyActivationLimit () const
G4double	PolarAngleLimit () const
G4double	SecondaryThreshold () const
G4bool	DeexcitationFlag () const
G4bool	ForceBuildTableFlag () const
G4bool	UseAngularGeneratorFlag () const
void	SetAngularGeneratorFlag (G4bool)
void	SetHighEnergyLimit (G4double)
void	SetLowEnergyLimit (G4double)
void	SetActivationHighEnergyLimit (G4double)
void	SetActivationLowEnergyLimit (G4double)
G4bool	IsActive (G4double kinEnergy) const
void	SetPolarAngleLimit (G4double)
void	SetSecondaryThreshold (G4double)
void	SetDeexcitationFlag (G4bool val)
void	SetForceBuildTable (G4bool val)
void	SetFluctuationFlag (G4bool val)
void	SetMasterThread (G4bool val)
G4bool	IsMaster () const
void	SetUseBaseMaterials (G4bool val)
G4bool	UseBaseMaterials () const
G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)
const G4String &	GetName () const
void	SetCurrentCouple (const G4MaterialCutsCouple *)
G4bool	IsLocked () const
void	SetLocked (G4bool)
void	SetLPMFlag (G4bool)
G4VEmModel &	operator= (const G4VEmModel &right)=delete
	G4VEmModel (const G4VEmModel &)=delete

Protected Attributes
G4ParticleChangeForGamma *	fParticleChangeForGamma = nullptr
Protected Attributes inherited from G4VDNAModel
G4bool	isInitialised = false
Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData = nullptr
G4VParticleChange *	pParticleChange = nullptr
G4PhysicsTable *	xSectionTable = nullptr
const G4Material *	pBaseMaterial = nullptr
const std::vector< G4double > *	theDensityFactor = nullptr
const std::vector< G4int > *	theDensityIdx = nullptr
G4double	inveplus
G4double	pFactor = 1.0
std::size_t	currentCoupleIndex = 0
std::size_t	basedCoupleIndex = 0
G4bool	lossFlucFlag = true

Additional Inherited Members
Protected Types inherited from G4VDNAModel
using	MaterialParticleMapData
Protected Member Functions inherited from G4VDNAModel
MaterialParticleMapData *	GetData ()
	GetTableData.
std::vector< G4String >	BuildApplyToMatVect (const G4String &materials)
	BuildApplyToMatVect Build the material name vector which is used to know the materials the user want to include in the model.
void	ReadAndSaveCSFile (const size_t &materialID, const G4ParticleDefinition *p, const G4String &file, const G4double &scaleFactor)
	ReadAndSaveCSFile Read and save a "simple" cross section file : use of G4DNACrossSectionDataSet->loadData()
G4int	RandomSelectShell (const G4double &k, const G4ParticleDefinition *particle, const size_t &materialName)
	RandomSelectShell Method to randomely select a shell from the data table uploaded. The size of the table (number of columns) is used to determine the total number of possible shells.
void	AddCrossSectionData (const size_t &materialName, const G4ParticleDefinition *particleName, const G4String &fileCS, const G4String &fileDiffCS, const G4double &scaleFactor)
	AddCrossSectionData Method used during the initialization of the model class to add a new material. It adds a material to the model and fills vectors with informations.
void	AddCrossSectionData (const size_t &materialName, const G4ParticleDefinition *particleName, const G4String &fileCS, const G4double &scaleFactor)
	AddCrossSectionData Method used during the initialization of the model class to add a new material. It adds a material to the model and fills vectors with informations. Not every model needs differential cross sections.
void	LoadCrossSectionData (const G4ParticleDefinition *particleName)
	LoadCrossSectionData Method to loop on all the registered materials in the model and load the corresponding data.
virtual void	ReadDiffCSFile (const size_t &materialName, const G4ParticleDefinition *particleName, const G4String &path, const G4double &scaleFactor)
	ReadDiffCSFile Virtual method that need to be implemented if one wish to use the differential cross sections. The read method for that kind of information is not standardized yet.
void	EnableForMaterialAndParticle (const size_t &materialID, const G4ParticleDefinition *p)
	EnableMaterialAndParticle.
Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss *	GetParticleChangeForLoss ()
G4ParticleChangeForGamma *	GetParticleChangeForGamma ()
virtual G4double	MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kineticEnergy)
const G4MaterialCutsCouple *	CurrentCouple () const
void	SetCurrentElement (const G4Element *)

Detailed Description

The G4DNAPTBElasticModel class This class implements the elastic model for the DNA materials and precursors.

Definition at line 48 of file G4DNAPTBElasticModel.hh.

Member Typedef Documentation

TriDimensionMap

using G4DNAPTBElasticModel::TriDimensionMap

Initial value:

 std::map<std::size_t,
    std::map<const G4ParticleDefinition*, std::map<G4double, std::map<G4double, G4double>>>>

Definition at line 51 of file G4DNAPTBElasticModel.hh.

VecMap

using G4DNAPTBElasticModel::VecMap

Initial value:

 std::map<std::size_t,
    std::map<const G4ParticleDefinition*, std::map<G4double, std::vector<G4double>>>>

Definition at line 53 of file G4DNAPTBElasticModel.hh.

Constructor & Destructor Documentation

G4DNAPTBElasticModel() [1/2]

G4DNAPTBElasticModel::G4DNAPTBElasticModel	(	const G4String &	applyToMaterial = "all",
		const G4ParticleDefinition *	p = nullptr,
		const G4String &	nam = "DNAPTBElasticModel" )

G4DNAPTBElasticModel Constructor.

Parameters

applyToMaterial
p
nam

Definition at line 39 of file G4DNAPTBElasticModel.cc.

  : G4VDNAModel(nam, applyToMaterial)
{
  if (verboseLevel > 0) {
    G4cout << "PTB Elastic model is constructed : " << G4endl;
  }
  fpTHF = G4Material::GetMaterial("THF", false);
  fpPY = G4Material::GetMaterial("PY", false);
  fpPU = G4Material::GetMaterial("PU", false);
  fpTMP = G4Material::GetMaterial("TMP", false);
  fpG4_WATER = G4Material::GetMaterial("G4_WATER", false);
  fpBackbone_THF = G4Material::GetMaterial("backbone_THF", false);
  fpCytosine_PY = G4Material::GetMaterial("cytosine_PY", false);
  fpThymine_PY = G4Material::GetMaterial("thymine_PY", false);
  fpAdenine_PU = G4Material::GetMaterial("adenine_PU", false);
  fpBackbone_TMP = G4Material::GetMaterial("backbone_TMP", false);
  fpGuanine_PU = G4Material::GetMaterial("guanine_PU", false);
  fpN2 = G4Material::GetMaterial("N2", false);
}

~G4DNAPTBElasticModel()

G4DNAPTBElasticModel::~G4DNAPTBElasticModel ( )

overridedefault

~G4DNAPTBElasticModel Destructor

G4DNAPTBElasticModel() [2/2]

G4DNAPTBElasticModel::G4DNAPTBElasticModel ( G4DNAPTBElasticModel & )

delete

Member Function Documentation

CrossSectionPerVolume()

G4double G4DNAPTBElasticModel::CrossSectionPerVolume ( const G4Material * material, const G4ParticleDefinition * p, G4double ekin, G4double emin, G4double emax )

overridevirtual

CrossSectionPerVolume This method is mandatory for any model class. It finds and return the cross section value for the current material, particle and energy values. The number of molecule per volume is not used here but in the G4DNAModelInterface class.

Parameters

material
materialName
p
ekin
emin
emax

Returns

the cross section value

Implements G4VDNAModel.

Definition at line 306 of file G4DNAPTBElasticModel.cc.

{
  if (verboseLevel > 3){
    G4cout << "Calling CrossSectionPerVolume() of G4DNAPTBElasticModel" << G4endl;
  }
 
  // Get the name of the current particle
  const G4String& particleName = p->GetParticleName();
  const std::size_t& materialID = pMaterial->GetIndex();
 
  // set killBelowEnergy value for current material
  fKillBelowEnergy = fpModelData->GetLowELimit(materialID, p);
  // initialise the return value (cross section) to zero
  G4double sigma = 0.;
 
  // check if we are below the high energy limit
  if (ekin < fpModelData->GetHighELimit(materialID, p)) {
    // This is used to kill the particle if its kinetic energy is below fKillBelowEnergy.
    // If the energy is lower then we return a maximum cross section and thus the SampleSecondaries
    // method will be called for sure. SampleSecondaries will remove the particle from the
    // simulation.
    //
    // SI : XS must not be zero otherwise sampling of secondaries method ignored
    if (ekin < fKillBelowEnergy) {
      return DBL_MAX;
    }
 
    // Get the tables with the cross section data
    auto tableData = fpModelData->GetData();
    if ((*tableData)[materialID][p] == nullptr) {
      G4Exception("G4DNAPTBElasticModel::CrossSectionPerVolume", "em00236", FatalException,
                  "No model is registered");
    }
    // Retrieve the cross section value
    sigma = (*tableData)[materialID][p]->FindValue(ekin);
  }
 
  if (verboseLevel > 2) {
    G4cout << "__________________________________" << G4endl;
    G4cout << "°°° G4DNAPTBElasticModel - XS INFO START" << G4endl;
    G4cout << "°°° Kinetic energy(eV)=" << ekin / eV << " particle : " << particleName << G4endl;
    G4cout << "°°° Cross section per molecule (cm^2)=" << sigma / cm / cm << G4endl;
    G4cout << "°°° G4DNAPTBElasticModel - XS INFO END" << G4endl;
  }
 
  // Return the cross section
  auto MolDensity =
    (*G4DNAMolecularMaterial::Instance()->GetNumMolPerVolTableFor(pMaterial))[materialID];
  return sigma * MolDensity;
}

Initialise()

void G4DNAPTBElasticModel::Initialise ( const G4ParticleDefinition * particle, const G4DataVector &  )

overridevirtual

Initialise Mandatory method for every model class. The material/particle for which the model can be used have to be added here through the AddCrossSectionData method. Then the LoadCrossSectionData method must be called to trigger the load process. Scale factors to be applied to the cross section can be defined here.

Implements G4VDNAModel.

Definition at line 62 of file G4DNAPTBElasticModel.cc.

{
  if (isInitialised) {
    return;
  }
  if (verboseLevel > 3)
  {
    G4cout << "Calling G4DNAPTBElasticModel::Initialise()" << G4endl;
  }
  if (particle != G4Electron::ElectronDefinition()) {
    std::ostringstream oss;
    oss << " Model is not applied for this particle " << particle->GetParticleName();
    G4Exception("G4DNAPTBElasticModel::G4DNAPTBElasticModel", "PTB001", FatalException,
                oss.str().c_str());
  }
  G4double scaleFactor = 1e-16 * cm * cm;
  //*******************************************************
  // Cross section data
  //*******************************************************
 
  std::size_t index;
  // MPietrzak, adding paths for N2
  if (fpN2 != nullptr) {
    index = fpN2->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_N2",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_N2", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1.02 * MeV);
  }
  // MPietrzak
 
  if (fpTHF != nullptr) {
    index = fpTHF->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_THF",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_THF", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpPY != nullptr) {
    index = fpPY->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PY",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PY", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpPU != nullptr) {
    index = fpPU->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PU",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PU", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpTMP != nullptr) {
    index = fpTMP->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_TMP",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_TMP", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
  //????
  if (fpG4_WATER != nullptr) {
    index = fpG4_WATER->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e_champion",
                        "dna/sigmadiff_cumulated_elastic_e_champion", scaleFactor);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
  // DNA materials
  //
  if (fpBackbone_THF != nullptr) {
    index = fpBackbone_THF->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_THF",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_THF", scaleFactor * 33. / 30);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpCytosine_PY != nullptr) {
    index = fpCytosine_PY->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PY",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PY", scaleFactor * 42. / 30);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpThymine_PY != nullptr) {
    index = fpThymine_PY->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PY",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PY", scaleFactor * 48. / 30);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpAdenine_PU != nullptr) {
    index = fpAdenine_PU->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PU",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PU", scaleFactor * 50. / 44);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
  if (fpGuanine_PU != nullptr) {
    index = fpGuanine_PU->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_PU",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_PU", scaleFactor * 56. / 44);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (fpBackbone_TMP != nullptr) {
    index = fpBackbone_TMP->GetIndex();
    AddCrossSectionData(index, particle, "dna/sigma_elastic_e-_PTB_TMP",
                        "dna/sigmadiff_cumulated_elastic_e-_PTB_TMP", scaleFactor * 33. / 50);
    SetLowELimit(index, particle, 10 * eV);
    SetHighELimit(index, particle, 1 * keV);
  }
 
  if (!G4DNAMaterialManager::Instance()->IsLocked()) {
    // Load the data
    LoadCrossSectionData(particle);
    G4DNAMaterialManager::Instance()->SetMasterDataModel(DNAModelType::fDNAElastics, this);
    fpModelData = this;
  }
  else {
    auto dataModel = dynamic_cast<G4DNAPTBElasticModel*>(
      G4DNAMaterialManager::Instance()->GetModel(DNAModelType::fDNAElastics));
    if (dataModel == nullptr) {
      G4cout << "G4DNAPTBElasticModel::Initialise:: not good modelData" << G4endl;
      G4Exception("G4DNAPTBElasticModel::Initialise", "PTB0006", FatalException,
                  "not good modelData");
    }
    else {
      fpModelData = dataModel;
    }
  }
 
  if (verboseLevel > 2) {
    G4cout << "Loaded cross section files for PTB Elastic model" << G4endl;
  }
 
  fParticleChangeForGamma = GetParticleChangeForGamma();
  isInitialised = true;
}

operator=()

G4DNAPTBElasticModel & G4DNAPTBElasticModel::operator= ( const G4DNAPTBElasticModel & right )

delete

SampleSecondaries()

void G4DNAPTBElasticModel::SampleSecondaries ( std::vector< G4DynamicParticle * > * , const G4MaterialCutsCouple * couple, const G4DynamicParticle * aDynamicElectron, G4double tmin, G4double tmax )

overridevirtual

SampleSecondaries Method called after CrossSectionPerVolume if the process is the one which is selected (according to the sampling on the calculated path length). Here, the characteristics of the incident and created (if any) particle(s) are set (energy, momentum ...).

Parameters

materialName
particleChangeForGamma
tmin
tmax

Implements G4VDNAModel.

Definition at line 361 of file G4DNAPTBElasticModel.cc.

{
  if (verboseLevel > 3) {
    G4cout << "Calling SampleSecondaries() of G4DNAPTBElasticModel" << G4endl;
  }
 
  G4double electronEnergy0 = aDynamicElectron->GetKineticEnergy();
  const std::size_t& materialID = couple->GetIndex();
  auto p = aDynamicElectron->GetParticleDefinition();
 
  // set killBelowEnergy value for material
  fKillBelowEnergy = fpModelData->GetLowELimit(materialID, p);
 
  // If the particle (electron here) energy is below the kill limit then we remove it from the
  // simulation
  if (electronEnergy0 < fKillBelowEnergy) {
    fParticleChangeForGamma->SetProposedKineticEnergy(0.);
    fParticleChangeForGamma->ProposeTrackStatus(fStopAndKill);
    fParticleChangeForGamma->ProposeLocalEnergyDeposit(electronEnergy0);
  }
  // If we are above the kill limite and below the high limit then we proceed
  else if (electronEnergy0 >= fKillBelowEnergy && electronEnergy0 < GetHighELimit(materialID, p)) {
    // Random sampling of the cosTheta
    G4double cosTheta = fpModelData->RandomizeCosTheta(electronEnergy0, materialID);
 
    // Random sampling of phi
    G4double phi = 2. * CLHEP::pi * G4UniformRand();
 
    auto zVers = aDynamicElectron->GetMomentumDirection();
    auto xVers = zVers.orthogonal();
    auto yVers = zVers.cross(xVers);
 
    G4double xDir = std::sqrt(1. - cosTheta * cosTheta);
    G4double yDir = xDir;
    xDir *= std::cos(phi);
    yDir *= std::sin(phi);
 
    // Particle direction after ModelInterface
    G4ThreeVector zPrikeVers((xDir * xVers + yDir * yVers + cosTheta * zVers));
 
    // Give the new direction
    fParticleChangeForGamma->ProposeMomentumDirection(zPrikeVers.unit());
 
    // Update the energy which does not change here
    fParticleChangeForGamma->SetProposedKineticEnergy(electronEnergy0);
  }
}

Member Data Documentation

fParticleChangeForGamma

G4ParticleChangeForGamma* G4DNAPTBElasticModel::fParticleChangeForGamma = nullptr

protected

Definition at line 114 of file G4DNAPTBElasticModel.hh.

Referenced by Initialise(), and SampleSecondaries().

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

• G4DNAPTBElasticModel.hh
• G4DNAPTBElasticModel.cc