Gabriele Cosmo
362 lines
11 KiB
C++
362 lines
11 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// -------------------------------------------------------------------
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//
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// GEANT4 Class header file
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//
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//
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// File name: G4VMscModel
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//
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// Author: Vladimir Ivanchenko
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//
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// Creation date: 07.03.2008
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//
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// Modifications:
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// 07.04.2009 V.Ivanchenko moved msc methods from G4VEmModel to G4VMscModel
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// 26.03.2012 V.Ivanchenko added transport x-section pointer and Get?Set methods
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//
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// Class Description:
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//
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// General interface to msc models
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// -------------------------------------------------------------------
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//
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#ifndef G4VMscModel_h
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#define G4VMscModel_h 1
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "G4VEmModel.hh"
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#include "G4MscStepLimitType.hh"
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#include "globals.hh"
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#include "G4ThreeVector.hh"
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#include "G4Track.hh"
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#include "G4SafetyHelper.hh"
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#include "G4PhysicsTable.hh"
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#include "G4ThreeVector.hh"
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#include <vector>
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class G4ParticleChangeForMSC;
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class G4ParticleDefinition;
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class G4VEnergyLossProcess;
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class G4VMscModel : public G4VEmModel
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{
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public:
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explicit G4VMscModel(const G4String& nam);
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~G4VMscModel() override;
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virtual G4double ComputeTruePathLengthLimit(const G4Track& track,
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G4double& stepLimit) = 0;
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virtual G4double ComputeGeomPathLength(G4double truePathLength) = 0;
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virtual G4double ComputeTrueStepLength(G4double geomPathLength) = 0;
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virtual G4ThreeVector& SampleScattering(const G4ThreeVector&,
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G4double safety) = 0;
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void InitialiseParameters(const G4ParticleDefinition*);
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void DumpParameters(std::ostream& out) const;
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// empty method
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void SampleSecondaries(std::vector<G4DynamicParticle*>*,
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const G4MaterialCutsCouple*,
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const G4DynamicParticle*,
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G4double tmin, G4double tmax) override;
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//================================================================
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// Set parameters of multiple scattering models
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//================================================================
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inline void SetStepLimitType(G4MscStepLimitType);
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inline void SetLateralDisplasmentFlag(G4bool val);
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inline void SetRangeFactor(G4double);
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inline void SetGeomFactor(G4double);
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inline void SetSkin(G4double);
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inline void SetLambdaLimit(G4double);
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inline void SetSafetyFactor(G4double);
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inline void SetSampleZ(G4bool);
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//================================================================
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// Get/Set access to Physics Tables
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//================================================================
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inline G4VEnergyLossProcess* GetIonisation() const;
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inline void SetIonisation(G4VEnergyLossProcess*,
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const G4ParticleDefinition* part);
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//================================================================
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// Run time methods
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//================================================================
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protected:
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// initialisation of the ParticleChange for the model
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// initialisation of interface with geometry and ionisation
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G4ParticleChangeForMSC*
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GetParticleChangeForMSC(const G4ParticleDefinition* p = nullptr);
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// convert true length to geometry length
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inline G4double ConvertTrueToGeom(G4double& tLength, G4double& gLength);
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// should be set before initialisation
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inline void SetUseSplineForMSC(G4bool val);
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public:
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// compute safety
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inline G4double ComputeSafety(const G4ThreeVector& position,
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G4double limit= DBL_MAX);
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// compute linear distance to a geometry boundary
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inline G4double ComputeGeomLimit(const G4Track&, G4double& presafety,
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G4double limit);
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G4double GetDEDX(const G4ParticleDefinition* part,
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G4double kineticEnergy,
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const G4MaterialCutsCouple* couple);
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G4double GetDEDX(const G4ParticleDefinition* part,
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G4double kineticEnergy,
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const G4MaterialCutsCouple* couple,
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G4double logKineticEnergy);
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G4double GetRange(const G4ParticleDefinition* part,
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G4double kineticEnergy,
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const G4MaterialCutsCouple* couple);
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G4double GetRange(const G4ParticleDefinition* part,
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G4double kineticEnergy,
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const G4MaterialCutsCouple* couple,
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G4double logKineticEnergy);
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G4double GetEnergy(const G4ParticleDefinition* part,
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G4double range,
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const G4MaterialCutsCouple* couple);
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// G4MaterialCutsCouple should be defined before call to this method
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inline
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G4double GetTransportMeanFreePath(const G4ParticleDefinition* part,
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G4double kinEnergy);
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inline
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G4double GetTransportMeanFreePath(const G4ParticleDefinition* part,
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G4double kinEnergy,
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G4double logKinEnergy);
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// hide assignment operator
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G4VMscModel & operator=(const G4VMscModel &right) = delete;
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G4VMscModel(const G4VMscModel&) = delete;
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private:
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G4SafetyHelper* safetyHelper = nullptr;
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G4VEnergyLossProcess* ionisation = nullptr;
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const G4ParticleDefinition* currentPart = nullptr;
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G4double dedx = 0.0;
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G4double localtkin = 0.0;
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G4double localrange = DBL_MAX;
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protected:
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G4double facrange = 0.04;
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G4double facgeom = 2.5;
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G4double facsafety = 0.6;
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G4double skin = 1.0;
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G4double dtrl = 0.05;
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G4double lambdalimit;
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G4double geomMin;
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G4double geomMax;
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G4ThreeVector fDisplacement;
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G4MscStepLimitType steppingAlgorithm;
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G4bool samplez = false;
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G4bool latDisplasment = true;
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private:
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G4bool useSpline = true;
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};
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetLateralDisplasmentFlag(G4bool val)
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{
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if(!IsLocked()) { latDisplasment = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetSkin(G4double val)
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{
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if(!IsLocked()) { skin = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetRangeFactor(G4double val)
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{
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if(!IsLocked()) { facrange = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetGeomFactor(G4double val)
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{
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if(!IsLocked()) { facgeom = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetLambdaLimit(G4double val)
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{
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if(!IsLocked()) { lambdalimit = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetSafetyFactor(G4double val)
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{
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if(!IsLocked()) { facsafety = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetStepLimitType(G4MscStepLimitType val)
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{
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if(!IsLocked()) { steppingAlgorithm = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetSampleZ(G4bool val)
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{
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if(!IsLocked()) { samplez = val; }
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4VMscModel::ComputeSafety(const G4ThreeVector& position,
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G4double limit)
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{
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return safetyHelper->ComputeSafety(position, limit);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4VMscModel::ConvertTrueToGeom(G4double& tlength,
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G4double& glength)
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{
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glength = ComputeGeomPathLength(tlength);
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// should return true length
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return tlength;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double G4VMscModel::ComputeGeomLimit(const G4Track& track,
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G4double& presafety,
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G4double limit)
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{
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return safetyHelper->CheckNextStep(
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track.GetStep()->GetPreStepPoint()->GetPosition(),
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track.GetMomentumDirection(),
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limit, presafety);
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4VEnergyLossProcess* G4VMscModel::GetIonisation() const
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{
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return ionisation;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetIonisation(G4VEnergyLossProcess* p,
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const G4ParticleDefinition* part)
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{
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ionisation = p;
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currentPart = part;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double
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G4VMscModel::GetTransportMeanFreePath(const G4ParticleDefinition* part,
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G4double ekin)
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{
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G4double x;
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if (nullptr != xSectionTable) {
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x = pFactor*(*xSectionTable)[basedCoupleIndex]->Value(ekin)/(ekin*ekin);
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} else {
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x = pFactor*CrossSectionPerVolume(pBaseMaterial, part, ekin, 0.0, DBL_MAX);
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}
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return (x > 0.0) ? 1.0/x : DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline G4double
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G4VMscModel::GetTransportMeanFreePath(const G4ParticleDefinition* part,
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G4double ekin, G4double logekin)
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{
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G4double x;
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if (nullptr != xSectionTable) {
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x = pFactor*(*xSectionTable)[basedCoupleIndex]->LogVectorValue(ekin, logekin)/(ekin*ekin);
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} else {
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x = pFactor*CrossSectionPerVolume(pBaseMaterial, part, ekin, 0.0, DBL_MAX);
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}
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return (x > 0.0) ? 1.0/x : DBL_MAX;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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inline void G4VMscModel::SetUseSplineForMSC(G4bool val)
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{
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useSpline = val;
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}
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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#endif
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