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geant4/source/processes/electromagnetic/utils/include/G4VEmModel.hh
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Gabriele Cosmo 96c8bcd0af Import Geant4 9.1.0 source tree
2016-06-09 15:37:50 +02:00

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//
// ********************************************************************
// * License and Disclaimer *
// * *
// * The Geant4 software is copyright of the Copyright Holders of *
// * the Geant4 Collaboration. It is provided under the terms and *
// * conditions of the Geant4 Software License, included in the file *
// * LICENSE and available at http://cern.ch/geant4/license . These *
// * include a list of copyright holders. *
// * *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work make any representation or warranty, express or implied, *
// * regarding this software system or assume any liability for its *
// * use. Please see the license in the file LICENSE and URL above *
// * for the full disclaimer and the limitation of liability. *
// * *
// * This code implementation is the result of the scientific and *
// * technical work of the GEANT4 collaboration. *
// * By using, copying, modifying or distributing the software (or *
// * any work based on the software) you agree to acknowledge its *
// * use in resulting scientific publications, and indicate your *
// * acceptance of all terms of the Geant4 Software license. *
// ********************************************************************
//
// $Id: G4VEmModel.hh,v 1.48 2007/10/29 08:38:58 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name: G4VEmModel
//
// Author: Vladimir Ivanchenko
//
// Creation date: 03.01.2002
//
// Modifications:
//
// 23-12-02 V.Ivanchenko change interface before move to cut per region
// 24-01-03 Cut per region (V.Ivanchenko)
// 13-02-03 Add name (V.Ivanchenko)
// 25-02-03 Add sample theta and displacement (V.Ivanchenko)
// 23-07-03 Replace G4Material by G4MaterialCutCouple in dE/dx and CrossSection
// calculation (V.Ivanchenko)
// 01-03-04 L.Urban signature changed in SampleCosineTheta
// 23-04-04 L.urban signature of SampleCosineTheta changed back
// 17-11-04 Add method CrossSectionPerAtom (V.Ivanchenko)
// 14-03-05 Reduce number of pure virtual methods and make inline part
// separate (V.Ivanchenko)
// 24-03-05 Remove IsInCharge and add G4VParticleChange in the constructor (VI)
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
// 15-04-05 optimize internal interface for msc (V.Ivanchenko)
// 08-05-05 A -> N (V.Ivanchenko)
// 25-07-05 Move constructor and destructor to the body (V.Ivanchenko)
// 02-02-06 ComputeCrossSectionPerAtom: default value A=0. (mma)
// 06-02-06 add method ComputeMeanFreePath() (mma)
// 07-03-06 Optimize msc methods (V.Ivanchenko)
// 29-06-06 Add member currentElement and Get/Set methods (V.Ivanchenko)
// 29-10-07 Added SampleScattering (V.Ivanchenko)
//
// Class Description:
//
// Abstract interface to energy loss models
// -------------------------------------------------------------------
//
#ifndef G4VEmModel_h
#define G4VEmModel_h 1
#include "globals.hh"
#include "G4DynamicParticle.hh"
#include "G4ParticleDefinition.hh"
#include "G4MaterialCutsCouple.hh"
#include "G4Material.hh"
#include "G4Element.hh"
#include "G4ElementVector.hh"
#include "G4DataVector.hh"
#include "G4VEmFluctuationModel.hh"
#include "Randomize.hh"
class G4PhysicsTable;
class G4Region;
class G4VParticleChange;
class G4Track;
class G4VEmModel
{
public:
G4VEmModel(const G4String& nam);
virtual ~G4VEmModel();
//------------------------------------------------------------------------
// Virtual methods to be implemented for the concrete model
//------------------------------------------------------------------------
virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&) = 0;
virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
const G4MaterialCutsCouple*,
const G4DynamicParticle*,
G4double tmin = 0.0,
G4double tmax = DBL_MAX) = 0;
//------------------------------------------------------------------------
// Methods with standard implementation; may be overwritten if needed
//------------------------------------------------------------------------
virtual G4double MinEnergyCut(const G4ParticleDefinition*,
const G4MaterialCutsCouple*);
virtual G4double ComputeDEDX(const G4MaterialCutsCouple*,
const G4ParticleDefinition*,
G4double kineticEnergy,
G4double cutEnergy = DBL_MAX);
virtual G4double CrossSection(const G4MaterialCutsCouple*,
const G4ParticleDefinition*,
G4double kineticEnergy,
G4double cutEnergy = 0.0,
G4double maxEnergy = DBL_MAX);
virtual G4double ComputeDEDXPerVolume(const G4Material*,
const G4ParticleDefinition*,
G4double kineticEnergy,
G4double cutEnergy = DBL_MAX);
virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
G4double kinEnergy,
G4double Z,
G4double A = 0.,
G4double cutEnergy = 0.0,
G4double maxEnergy = DBL_MAX);
virtual G4double ComputeMeanFreePath(const G4ParticleDefinition*,
G4double kineticEnergy,
const G4Material*,
G4double cutEnergy = 0.0,
G4double maxEnergy = DBL_MAX);
virtual G4double CrossSectionPerVolume(const G4Material*,
const G4ParticleDefinition*,
G4double kineticEnergy,
G4double cutEnergy = 0.0,
G4double maxEnergy = DBL_MAX);
protected:
virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
G4double kineticEnergy);
//------------------------------------------------------------------------
// Methods for msc simulation which needs to be overwritten
//------------------------------------------------------------------------
public:
virtual void SampleScattering(const G4DynamicParticle*,
G4double safety);
virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
G4PhysicsTable* theLambdaTable,
G4double currentMinimalStep);
virtual G4double ComputeGeomPathLength(G4double truePathLength);
virtual G4double ComputeTrueStepLength(G4double geomPathLength);
virtual void DefineForRegion(const G4Region*);
//------------------------------------------------------------------------
// Generic methods common to all models
//------------------------------------------------------------------------
void SetParticleChange(G4VParticleChange*, G4VEmFluctuationModel*);
G4VEmFluctuationModel* GetModelOfFluctuations();
G4double HighEnergyLimit();
G4double LowEnergyLimit();
void SetHighEnergyLimit(G4double);
void SetLowEnergyLimit(G4double);
G4double MaxSecondaryKinEnergy(const G4DynamicParticle* dynParticle);
const G4Element* SelectRandomAtom(const G4Material*,
const G4ParticleDefinition*,
G4double kineticEnergy,
G4double cutEnergy = 0.0,
G4double maxEnergy = DBL_MAX);
const G4String& GetName() const;
protected:
const G4Element* GetCurrentElement() const;
void SetCurrentElement(const G4Element*);
private:
// hide assignment operator
G4VEmModel & operator=(const G4VEmModel &right);
G4VEmModel(const G4VEmModel&);
G4double lowLimit;
G4double highLimit;
G4double xsec[40];
G4VEmFluctuationModel* fluc;
const G4String name;
const G4Element* currentElement;
protected:
G4VParticleChange* pParticleChange;
};
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::HighEnergyLimit()
{
return highLimit;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::LowEnergyLimit()
{
return lowLimit;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::SetHighEnergyLimit(G4double val)
{
highLimit = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::SetLowEnergyLimit(G4double val)
{
lowLimit = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::SetParticleChange(G4VParticleChange* p,
G4VEmFluctuationModel* f = 0)
{
if(p && pParticleChange != p) pParticleChange = p;
fluc = f;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4VEmFluctuationModel* G4VEmModel::GetModelOfFluctuations()
{
return fluc;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::MinEnergyCut(const G4ParticleDefinition*,
const G4MaterialCutsCouple*)
{
return 0.0;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeDEDXPerVolume(
const G4Material*,
const G4ParticleDefinition*,
G4double,
G4double)
{
return 0.0;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeDEDX(const G4MaterialCutsCouple* c,
const G4ParticleDefinition* p,
G4double kinEnergy,
G4double cutEnergy)
{
return ComputeDEDXPerVolume(c->GetMaterial(),p,kinEnergy,cutEnergy);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::CrossSection(const G4MaterialCutsCouple* c,
const G4ParticleDefinition* p,
G4double kinEnergy,
G4double cutEnergy,
G4double maxEnergy)
{
return
CrossSectionPerVolume(c->GetMaterial(),p,kinEnergy,cutEnergy,maxEnergy);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeCrossSectionPerAtom(
const G4ParticleDefinition*,
G4double, G4double, G4double,
G4double, G4double)
{
return 0.0;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline const G4Element* G4VEmModel::SelectRandomAtom(
const G4Material* material,
const G4ParticleDefinition* pd,
G4double kinEnergy,
G4double tcut,
G4double tmax)
{
const G4ElementVector* theElementVector = material->GetElementVector();
G4int nelm = material->GetNumberOfElements();
currentElement = (*theElementVector)[nelm-1];
if (nelm > 1) {
G4double x = G4UniformRand()*
CrossSectionPerVolume(material,pd,kinEnergy,tcut,tmax);
for(G4int i=0; i<nelm; i++) {
if (x <= xsec[i]) {
currentElement = (*theElementVector)[i];
break;
}
}
}
return currentElement;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline const G4Element* G4VEmModel::GetCurrentElement() const
{
return currentElement;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::SetCurrentElement(const G4Element* elm)
{
currentElement = elm;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::MaxSecondaryKinEnergy(
const G4DynamicParticle* dynParticle)
{
return MaxSecondaryEnergy(dynParticle->GetDefinition(),
dynParticle->GetKineticEnergy());
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::MaxSecondaryEnergy(const G4ParticleDefinition*,
G4double kineticEnergy)
{
return kineticEnergy;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline const G4String& G4VEmModel::GetName() const
{
return name;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
// Methods for msc simulation
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::SampleScattering(const G4DynamicParticle*, G4double)
{}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeTruePathLengthLimit(
const G4Track&,
G4PhysicsTable*,
G4double)
{
return DBL_MAX;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeGeomPathLength(G4double truePathLength)
{
return truePathLength;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VEmModel::ComputeTrueStepLength(G4double geomPathLength)
{
return geomPathLength;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline void G4VEmModel::DefineForRegion(const G4Region*)
{}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
#endif
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