Files
geant4/source/processes/electromagnetic/utils/include/G4VEmProcess.hh
T
2016-06-09 15:16:48 +02:00

697 lines
22 KiB
C++

//
// ********************************************************************
// * 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: G4VEmProcess.hh,v 1.37 2007/05/23 08:43:46 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-00 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name: G4VEmProcess
//
// Author: Vladimir Ivanchenko
//
// Creation date: 01.10.2003
//
// Modifications:
// 30-06-04 make destructor virtual (V.Ivanchenko)
// 09-08-04 optimise integral option (V.Ivanchenko)
// 11-08-04 add protected methods to access cuts (V.Ivanchenko)
// 09-09-04 Bug fix for the integral mode with 2 peaks (V.Ivanchneko)
// 16-09-04 Add flag for LambdaTable and method RecalculateLambda (VI)
// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
// 18-04-05 Use G4ParticleChangeForGamma (V.Ivantchenko)
// 09-05-05 Fix problem in logic when path boundary between materials (VI)
// 11-01-06 add A to parameters of ComputeCrossSectionPerAtom (VI)
// 01-02-06 put default value A=0. to keep compatibility with v5.2 (mma)
// 13-05-06 Add method to access model by index (V.Ivanchenko)
// 12-09-06 add SetModel() (mma)
//
// Class Description:
//
// It is the unified Discrete process
// -------------------------------------------------------------------
//
#ifndef G4VEmProcess_h
#define G4VEmProcess_h 1
#include "G4VDiscreteProcess.hh"
#include "globals.hh"
#include "G4Material.hh"
#include "G4MaterialCutsCouple.hh"
#include "G4Track.hh"
#include "G4EmModelManager.hh"
#include "G4UnitsTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleChangeForGamma.hh"
class G4Step;
class G4VEmModel;
class G4DataVector;
class G4VParticleChange;
class G4PhysicsTable;
class G4PhysicsVector;
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
class G4VEmProcess : public G4VDiscreteProcess
{
public:
G4VEmProcess(const G4String& name,
G4ProcessType type = fElectromagnetic);
virtual ~G4VEmProcess();
//------------------------------------------------------------------------
// Virtual methods to be implemented in concrete processes
//------------------------------------------------------------------------
virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
virtual void PrintInfo() = 0;
protected:
virtual void InitialiseProcess(const G4ParticleDefinition*) = 0;
//------------------------------------------------------------------------
// Methods with standard implementation; may be overwritten if needed
//------------------------------------------------------------------------
inline virtual G4double RecalculateLambda(G4double kinEnergy,
const G4MaterialCutsCouple* couple);
//------------------------------------------------------------------------
// Generic methods common to all processes
//------------------------------------------------------------------------
public:
void PrintInfoDefinition();
virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
void PreparePhysicsTable(const G4ParticleDefinition&);
// Initialise for build of tables
void BuildPhysicsTable(const G4ParticleDefinition&);
// Build physics table during initialisation
G4bool StorePhysicsTable(const G4ParticleDefinition*,
const G4String& directory,
G4bool ascii = false);
// Store PhysicsTable in a file.
// Return false in case of failure at I/O
G4bool RetrievePhysicsTable(const G4ParticleDefinition*,
const G4String& directory,
G4bool ascii);
// Retrieve Physics from a file.
// (return true if the Physics Table can be build by using file)
// (return false if the process has no functionality or in case of failure)
// File name should is constructed as processName+particleName and the
// should be placed under the directory specifed by the argument.
G4double MicroscopicCrossSection(G4double kineticEnergy,
const G4MaterialCutsCouple* couple);
// It returns the cross section of the process for energy/ material
inline G4double ComputeCrossSectionPerAtom(G4double kineticEnergy,
G4double Z, G4double A=0.);
// It returns the cross section of the process per atom
inline G4double MeanFreePath(const G4Track& track);
//------------------------------------------------------------------------
// Specific methods for post step simulation
//------------------------------------------------------------------------
G4double PostStepGetPhysicalInteractionLength(
const G4Track& track,
G4double previousStepSize,
G4ForceCondition* condition
);
inline G4VEmModel* SelectModelForMaterial(G4double kinEnergy,
size_t& idxRegion) const;
inline G4double GetLambda(G4double& kinEnergy,
const G4MaterialCutsCouple* couple);
// It returns the Lambda of the process
//------------------------------------------------------------------------
// Specific methods to build and access Physics Tables
//------------------------------------------------------------------------
inline void SetLambdaBinning(G4int nbins);
inline G4int LambdaBinning() const;
// Binning for lambda table
inline void SetMinKinEnergy(G4double e);
inline G4double MinKinEnergy() const;
// Min kinetic energy for tables
inline void SetMaxKinEnergy(G4double e);
inline G4double MaxKinEnergy() const;
// Max kinetic energy for tables
inline const G4PhysicsTable* LambdaTable() const;
//------------------------------------------------------------------------
// Define and access particle type
//------------------------------------------------------------------------
inline const G4ParticleDefinition* Particle() const;
inline const G4ParticleDefinition* SecondaryParticle() const;
//------------------------------------------------------------------------
// Specific methods to set, access, modify models
//------------------------------------------------------------------------
void AddEmModel(G4int, G4VEmModel*, const G4Region* region = 0);
// Add EM model coupled for the region
inline void SetModel(G4VEmModel*);
// Assign a model to a process
inline G4VEmModel* Model();
// return the assigned model
inline void UpdateEmModel(const G4String&, G4double, G4double);
// Define new energy range for the model identified by the name
// Access to models
inline G4VEmModel* GetModelByIndex(G4int idx = 0);
//------------------------------------------------------------------------
// Get/set parameters used for simulation of energy loss
//------------------------------------------------------------------------
inline void ActivateDeexcitation(G4bool, const G4Region* r = 0);
inline void SetLambdaFactor(G4double val);
inline void SetIntegral(G4bool val);
inline G4bool IsIntegral() const;
inline void SetApplyCuts(G4bool val);
protected:
G4PhysicsVector* LambdaPhysicsVector(const G4MaterialCutsCouple*);
inline void SetParticle(const G4ParticleDefinition* p);
inline void SetSecondaryParticle(const G4ParticleDefinition* p);
inline G4double GetMeanFreePath(const G4Track& track,
G4double previousStepSize,
G4ForceCondition* condition);
inline G4VEmModel* SelectModel(G4double& kinEnergy);
inline size_t CurrentMaterialCutsCoupleIndex() const;
inline G4double GetGammaEnergyCut();
inline G4double GetElectronEnergyCut();
inline void SetBuildTableFlag(G4bool val);
inline void SetStartFromNullFlag(G4bool val);
private:
void Clear();
void BuildLambdaTable();
void FindLambdaMax();
inline void InitialiseStep(const G4Track&);
inline void DefineMaterial(const G4MaterialCutsCouple* couple);
inline void ComputeIntegralLambda(G4double kinEnergy);
inline G4double GetLambdaFromTable(G4double kinEnergy);
inline G4double GetCurrentLambda(G4double kinEnergy);
inline G4double ComputeCurrentLambda(G4double kinEnergy);
// hide assignment operator
G4VEmProcess(G4VEmProcess &);
G4VEmProcess & operator=(const G4VEmProcess &right);
// =====================================================================
protected:
G4ParticleChangeForGamma fParticleChange;
private:
std::vector<G4DynamicParticle*> secParticles;
G4EmModelManager* modelManager;
G4VEmModel* selectedModel;
// tables and vectors
G4PhysicsTable* theLambdaTable;
G4double* theEnergyOfCrossSectionMax;
G4double* theCrossSectionMax;
const G4ParticleDefinition* particle;
const G4ParticleDefinition* secondaryParticle;
const G4ParticleDefinition* theGamma;
const G4ParticleDefinition* theElectron;
const G4ParticleDefinition* thePositron;
const std::vector<G4double>* theCutsGamma;
const std::vector<G4double>* theCutsElectron;
const std::vector<G4double>* theCutsPositron;
G4int nLambdaBins;
G4double minKinEnergy;
G4double maxKinEnergy;
G4double lambdaFactor;
// cash
const G4Material* currentMaterial;
const G4MaterialCutsCouple* currentCouple;
size_t currentMaterialIndex;
G4double mfpKinEnergy;
G4double preStepKinEnergy;
G4double preStepLambda;
G4bool integral;
G4bool buildLambdaTable;
G4bool applyCuts;
G4bool startFromNull;
G4int nRegions;
std::vector<G4Region*> regions;
std::vector<G4bool> flagsDeexcitation;
};
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::DefineMaterial(const G4MaterialCutsCouple* couple)
{
if(couple != currentCouple) {
currentCouple = couple;
currentMaterial = couple->GetMaterial();
currentMaterialIndex = couple->GetIndex();
mfpKinEnergy = DBL_MAX;
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::InitialiseStep(const G4Track& track)
{
preStepKinEnergy = track.GetKineticEnergy();
DefineMaterial(track.GetMaterialCutsCouple());
if (theNumberOfInteractionLengthLeft < 0.0) mfpKinEnergy = DBL_MAX;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetLambda(G4double& kineticEnergy,
const G4MaterialCutsCouple* couple)
{
DefineMaterial(couple);
return GetCurrentLambda(kineticEnergy);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetCurrentLambda(G4double e)
{
G4double x = 0.0;
if(theLambdaTable) x = GetLambdaFromTable(e);
else x = ComputeCurrentLambda(e);
return x;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::RecalculateLambda(G4double e,
const G4MaterialCutsCouple* couple)
{
DefineMaterial(couple);
return ComputeCurrentLambda(e);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::ComputeCurrentLambda(G4double e)
{
G4VEmModel* currentModel = SelectModel(e);
G4double x = 0.0;
if(currentModel)
x = currentModel->CrossSectionPerVolume(currentMaterial,particle,e);
return x;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetLambdaFromTable(G4double e)
{
G4bool b;
return (((*theLambdaTable)[currentMaterialIndex])->GetValue(e, b));
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::ComputeIntegralLambda(G4double e)
{
mfpKinEnergy = theEnergyOfCrossSectionMax[currentMaterialIndex];
if (e <= mfpKinEnergy) {
preStepLambda = GetLambdaFromTable(e);
// mfpKinEnergy = 0.0;
} else {
G4double e1 = e*lambdaFactor;
if(e1 > mfpKinEnergy) {
preStepLambda = GetLambdaFromTable(e);
G4double preStepLambda1 = GetLambdaFromTable(e1);
if(preStepLambda1 > preStepLambda) {
mfpKinEnergy = e1;
preStepLambda = preStepLambda1;
}
} else {
preStepLambda = theCrossSectionMax[currentMaterialIndex];
}
}
// theNumberOfInteractionLengthLeft = -1.;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::PostStepGetPhysicalInteractionLength(
const G4Track& track,
G4double previousStepSize,
G4ForceCondition* condition)
{
// condition is set to "Not Forced"
*condition = NotForced;
G4double x = DBL_MAX;
if(previousStepSize <= DBL_MIN) theNumberOfInteractionLengthLeft = -1.0;
InitialiseStep(track);
if(preStepKinEnergy < mfpKinEnergy) {
if (integral) ComputeIntegralLambda(preStepKinEnergy);
else preStepLambda = GetCurrentLambda(preStepKinEnergy);
if(preStepLambda <= DBL_MIN) mfpKinEnergy = 0.0;
}
if(preStepLambda > DBL_MIN) {
if (theNumberOfInteractionLengthLeft < 0.0) {
// beggining of tracking (or just after DoIt of this process)
ResetNumberOfInteractionLengthLeft();
} else if(previousStepSize > DBL_MIN) {
// subtract NumberOfInteractionLengthLeft
SubtractNumberOfInteractionLengthLeft(previousStepSize);
if(theNumberOfInteractionLengthLeft<0.)
theNumberOfInteractionLengthLeft=perMillion;
}
// get mean free path
currentInteractionLength = 1.0/preStepLambda;
x = theNumberOfInteractionLengthLeft * currentInteractionLength;
#ifdef G4VERBOSE
if (verboseLevel>2){
G4cout << "G4VEmProcess::PostStepGetPhysicalInteractionLength ";
G4cout << "[ " << GetProcessName() << "]" << G4endl;
G4cout << " for " << particle->GetParticleName()
<< " in Material " << currentMaterial->GetName()
<< " Ekin(MeV)= " << preStepKinEnergy/MeV
<<G4endl;
G4cout << "MeanFreePath = " << currentInteractionLength/cm << "[cm]"
<< "InteractionLength= " << x/cm <<"[cm] " <<G4endl;
}
#endif
}
return x;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::MeanFreePath(const G4Track& track)
{
DefineMaterial(track.GetMaterialCutsCouple());
preStepLambda = GetCurrentLambda(track.GetKineticEnergy());
G4double x = DBL_MAX;
if(DBL_MIN < preStepLambda) x = 1.0/preStepLambda;
return x;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetMeanFreePath(const G4Track& track,
G4double,
G4ForceCondition* condition)
{
*condition = NotForced;
return G4VEmProcess::MeanFreePath(track);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4VEmModel* G4VEmProcess::SelectModel(G4double& kinEnergy)
{
return modelManager->SelectModel(kinEnergy, currentMaterialIndex);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4VEmModel* G4VEmProcess::SelectModelForMaterial(
G4double kinEnergy, size_t& idxRegion) const
{
return modelManager->SelectModel(kinEnergy, idxRegion);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline const G4ParticleDefinition* G4VEmProcess::Particle() const
{
return particle;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline const G4ParticleDefinition* G4VEmProcess::SecondaryParticle() const
{
return secondaryParticle;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetGammaEnergyCut()
{
return (*theCutsGamma)[currentMaterialIndex];
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::GetElectronEnergyCut()
{
return (*theCutsElectron)[currentMaterialIndex];
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetLambdaFactor(G4double val)
{
if(val > 0.0 && val <= 1.0) lambdaFactor = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4VEmModel* G4VEmProcess::GetModelByIndex(G4int idx)
{
return modelManager->GetModel(idx);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetParticle(const G4ParticleDefinition* p)
{
particle = p;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetSecondaryParticle(const G4ParticleDefinition* p)
{
secondaryParticle = p;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetModel(G4VEmModel* model)
{
selectedModel = model;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4VEmModel* G4VEmProcess::Model()
{
return selectedModel;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::UpdateEmModel(const G4String& nam,
G4double emin, G4double emax)
{
modelManager->UpdateEmModel(nam, emin, emax);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::ComputeCrossSectionPerAtom(
G4double kineticEnergy, G4double Z, G4double A)
{
G4VEmModel* model = SelectModel(kineticEnergy);
return model->ComputeCrossSectionPerAtom(particle,kineticEnergy,Z,A);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetLambdaBinning(G4int nbins)
{
nLambdaBins = nbins;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4int G4VEmProcess::LambdaBinning() const
{
return nLambdaBins;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetMinKinEnergy(G4double e)
{
minKinEnergy = e;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::MinKinEnergy() const
{
return minKinEnergy;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetMaxKinEnergy(G4double e)
{
maxKinEnergy = e;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VEmProcess::MaxKinEnergy() const
{
return maxKinEnergy;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::ActivateDeexcitation(G4bool, const G4Region*)
{}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline const G4PhysicsTable* G4VEmProcess::LambdaTable() const
{
return theLambdaTable;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetIntegral(G4bool val)
{
if(particle && particle != theGamma) integral = val;
if(integral) buildLambdaTable = true;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4bool G4VEmProcess::IsIntegral() const
{
return integral;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetBuildTableFlag(G4bool val)
{
buildLambdaTable = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetStartFromNullFlag(G4bool val)
{
startFromNull = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VEmProcess::SetApplyCuts(G4bool val)
{
applyCuts = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline size_t G4VEmProcess::CurrentMaterialCutsCoupleIndex() const
{
return currentMaterialIndex;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
#endif