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geant4/source/processes/electromagnetic/utils/include/G4VMultipleScattering.hh
T
Gabriele Cosmo 96686e0c8f Import Geant4 6.0.0 source tree
2016-06-09 10:41:53 +02:00

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//
// ********************************************************************
// * DISCLAIMER *
// * *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in: *
// * http://cern.ch/geant4/license *
// * *
// * 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. *
// * *
// * This code implementation is the intellectual property of the *
// * GEANT4 collaboration. *
// * By copying, distributing or modifying the Program (or any work *
// * based on the Program) you indicate your acceptance of this *
// * statement, and all its terms. *
// ********************************************************************
//
// $Id: G4VMultipleScattering.hh,v 1.15 2003/11/26 10:01:13 urban Exp $
// GEANT4 tag $Name: geant4-06-00 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name: G4VMultipleScattering
//
// Author: Vladimir Ivanchenko on base of Laszlo Urban code
//
// Creation date: 12.03.2002
//
// Modifications:
//
// 16-07-03 Update GetRange interface (V.Ivanchenko)
//
//
// Class Description:
//
// It is the generic process of multiple scattering it includes common
// part of calculations for all charged particles
//
// 26-11-03 bugfix in AlongStepDoIt (L.Urban)
// -------------------------------------------------------------------
//
#ifndef G4VMultipleScattering_h
#define G4VMultipleScattering_h 1
#include "G4VContinuousDiscreteProcess.hh"
#include "G4LossTableManager.hh"
#include "globals.hh"
#include "G4Material.hh"
#include "G4MaterialCutsCouple.hh"
#include "G4ParticleChangeForMSC.hh"
#include "G4Track.hh"
#include "G4EmModelManager.hh"
#include "G4VEmModel.hh"
class G4Step;
class G4ParticleDefinition;
class G4DataVector;
class G4Navigator;
class G4PhysicsTable;
class G4PhysicsVector;
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
class G4VMultipleScattering : public G4VContinuousDiscreteProcess
{
public:
G4VMultipleScattering(const G4String& name = "msc",
G4ProcessType type = fElectromagnetic);
~G4VMultipleScattering();
virtual G4bool IsApplicable(const G4ParticleDefinition& p) = 0;
// True for all charged particles
virtual void BuildPhysicsTable(const G4ParticleDefinition&);
// Build physics table during initialisation
G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
G4double AlongStepGetPhysicalInteractionLength(
const G4Track&,
G4double previousStepSize,
G4double currentMinimalStep,
G4double& currentSafety,
G4GPILSelection* selection);
// The function overloads the corresponding function of the base
// class.It limits the step near to boundaries only
// and invokes the method GetContinuousStepLimit at every step.
virtual void PrintInfoDefinition();
// Print out of the class parameters
void SetBinning(G4int nbins);
G4int Binning() const;
// Print out of the class parameters
void SetMinKinEnergy(G4double e);
G4double MinKinEnergy() const;
// Print out of the class parameters
void SetMaxKinEnergy(G4double e);
G4double MaxKinEnergy() const;
// Print out of the class parameters
G4bool StorePhysicsTable(G4ParticleDefinition*,
const G4String& directory,
G4bool ascii = false);
// Store PhysicsTable in a file.
// Return false in case of failure at I/O
G4bool RetrievePhysicsTable(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.
void AddEmModel(G4int, G4VEmModel*, const G4Region* region = 0);
G4double ContinuousStepLimit(const G4Track& track,
G4double previousStepSize,
G4double currentMinimalStep,
G4double& currentSafety);
// This method does not used for tracking, it is intended only for tests
G4bool LateralDisplasmentFlag() const;
void SetLateralDisplasmentFlag(G4bool val);
// lateral displacement to be/not to be computed
G4bool BoundaryAlgorithmFlag() const;
void SetBoundary(G4bool val);
// boundary algorith is/isnt active
void SetBuildLambdaTable(G4bool val);
virtual G4double TruePathLengthLimit(const G4Track& track,
G4double& lambda,
G4double currentMinimalStep) = 0;
protected:
virtual void InitialiseProcess(const G4ParticleDefinition&) = 0;
G4double GetMeanFreePath(const G4Track& track,
G4double,
G4ForceCondition* condition);
// This method is used for tracking, it returns mean free path value
G4double GetLambda(const G4ParticleDefinition* p, G4double& kineticEnergy);
G4double GetContinuousStepLimit(const G4Track& track,
G4double previousStepSize,
G4double currentMinimalStep,
G4double& currentSafety);
// This method is used for tracking, it returns step limit
virtual G4PhysicsVector* PhysicsVector(const G4MaterialCutsCouple*);
// Build empty Physics Vector
void SelectModel(G4double& kinEnergy);
// Select concrete model
size_t CurrentMaterialCutsCoupleIndex() const {return currentMaterialIndex;};
// Return current index
G4double CurrentRange() const {return currentRange;};
private:
void DefineMaterial(const G4MaterialCutsCouple* couple);
// define current material
// hide assignment operator
G4VMultipleScattering(G4VMultipleScattering &);
G4VMultipleScattering & operator=(const G4VMultipleScattering &right);
// =====================================================================
private:
G4ParticleChangeForMSC fParticleChange;
G4EmModelManager* modelManager;
G4Navigator* navigator;
G4VEmModel* currentModel;
// tables and vectors
G4PhysicsTable* theLambdaTable;
// cash
const G4ParticleDefinition* currentParticle;
const G4MaterialCutsCouple* currentCouple;
size_t currentMaterialIndex;
G4int nBins;
G4double minKinEnergy;
G4double maxKinEnergy;
G4double trueStepLength;
G4double truePathLength;
G4double geomPathLength;
G4double lambda0;
G4double currentRange;
G4GPILSelection valueGPILSelectionMSC;
G4bool boundary;
G4bool latDisplasment;
G4bool buildLambdaTable;
};
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::DefineMaterial(const G4MaterialCutsCouple* couple)
{
if(couple != currentCouple) {
currentCouple = couple;
currentMaterialIndex = couple->GetIndex();
}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::GetMeanFreePath(const G4Track&,
G4double,
G4ForceCondition* cond)
{
*cond = Forced;
return DBL_MAX;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
inline G4double G4VMultipleScattering::AlongStepGetPhysicalInteractionLength(
const G4Track& track,
G4double previousStepSize,
G4double currentMinimalStep,
G4double& currentSafety,
G4GPILSelection* selection)
{
// get Step limit proposed by the process
valueGPILSelectionMSC = NotCandidateForSelection;
G4double steplength = GetContinuousStepLimit(track,previousStepSize,
currentMinimalStep,currentSafety);
// set return value for G4GPILSelection
*selection = valueGPILSelectionMSC;
return steplength;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::GetContinuousStepLimit(
const G4Track& track,
G4double,
G4double currentMinimalStep,
G4double&)
{
DefineMaterial(track.GetMaterialCutsCouple());
G4double e = track.GetKineticEnergy();
SelectModel(e);
const G4ParticleDefinition* p = track.GetDefinition();
lambda0 = GetLambda(p, e);
currentRange = G4LossTableManager::Instance()->GetRange(p,e,currentCouple);
truePathLength = TruePathLengthLimit(track,lambda0,currentMinimalStep);
//G4cout << "StepLimit: tpl= " << truePathLength << " lambda0= "
// << lambda0 << " range= " << currentRange
// << " currentMinStep= " << currentMinimalStep << G4endl;
if (truePathLength < currentMinimalStep) valueGPILSelectionMSC = CandidateForSelection;
geomPathLength = currentModel->GeomPathLength(theLambdaTable,currentCouple,
p,e,lambda0,currentRange,truePathLength);
if(geomPathLength > lambda0) geomPathLength = lambda0;
return geomPathLength;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::ContinuousStepLimit(
const G4Track& track,
G4double previousStepSize,
G4double currentMinimalStep,
G4double& currentSafety)
{
return GetContinuousStepLimit(track,previousStepSize,currentMinimalStep,
currentSafety);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::GetLambda(const G4ParticleDefinition* p, G4double& e)
{
G4double x;
if(theLambdaTable) {
G4bool b;
x = ((*theLambdaTable)[currentMaterialIndex])->GetValue(e, b);
} else {
x = currentModel->CrossSection(currentCouple,p,e,0.0,1.0);
}
return x;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4VParticleChange* G4VMultipleScattering::AlongStepDoIt(
const G4Track& track,
const G4Step& step)
{
fParticleChange.Initialize(track);
G4double geomStepLength = step.GetStepLength();
if((geomStepLength == geomPathLength) && (truePathLength <= currentRange))
trueStepLength = truePathLength;
else
trueStepLength = currentModel->TrueStepLength(geomStepLength);
fParticleChange.SetTrueStepLength(trueStepLength);
return &fParticleChange;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SelectModel(G4double& kinEnergy)
{
currentModel = modelManager->SelectModel(kinEnergy, currentMaterialIndex);
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetBinning(G4int nbins)
{
nBins = nbins;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4int G4VMultipleScattering::Binning() const
{
return nBins;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetMinKinEnergy(G4double e)
{
minKinEnergy = e;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::MinKinEnergy() const
{
return minKinEnergy;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetMaxKinEnergy(G4double e)
{
maxKinEnergy = e;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4double G4VMultipleScattering::MaxKinEnergy() const
{
return maxKinEnergy;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4bool G4VMultipleScattering::LateralDisplasmentFlag() const
{
return latDisplasment;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetLateralDisplasmentFlag(G4bool val)
{
latDisplasment = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline G4bool G4VMultipleScattering::BoundaryAlgorithmFlag() const
{
return boundary;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetBoundary(G4bool val)
{
boundary = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
inline void G4VMultipleScattering::SetBuildLambdaTable(G4bool val)
{
buildLambdaTable = val;
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
#endif
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