Gabriele Cosmo
127 lines
4.8 KiB
C++
127 lines
4.8 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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// Author: Luciano Pandola
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//
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// History:
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// -----------
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// 13 Jan 2010 L. Pandola First implementation
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// 24 May 2011 L. Pandola Renamed (make v2008 as default Penelope)
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// 18 Sep 2013 L. Pandola Migration to MT paradigm
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// 04 Mar 2021 L. Pandola Replace map with static array
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//
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// -------------------------------------------------------------------
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//
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// Class description:
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// Low Energy Electromagnetic Physics, Gamma Conversion
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// with Penelope Model, version 2008
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// -------------------------------------------------------------------
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#ifndef G4PENELOPEGAMMACONVERSIONMODEL_HH
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#define G4PENELOPEGAMMACONVERSIONMODEL_HH 1
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#include "globals.hh"
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#include "G4VEmModel.hh"
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#include "G4DataVector.hh"
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#include "G4ParticleChangeForGamma.hh"
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class G4ParticleDefinition;
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class G4DynamicParticle;
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class G4MaterialCutsCouple;
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class G4Material;
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class G4PhysicsFreeVector;
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class G4PenelopeGammaConversionModel : public G4VEmModel
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{
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public:
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explicit G4PenelopeGammaConversionModel(const G4ParticleDefinition* p=nullptr,
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const G4String& processName ="PenConversion");
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virtual ~G4PenelopeGammaConversionModel();
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void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
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void InitialiseLocal(const G4ParticleDefinition*, G4VEmModel*) override;
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G4double ComputeCrossSectionPerAtom(
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const G4ParticleDefinition*,
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G4double kinEnergy,
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G4double Z,
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G4double A=0,
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G4double cut=0,
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G4double emax=DBL_MAX) override;
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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,
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G4double maxEnergy) override;
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void SetVerbosityLevel(G4int lev){fVerboseLevel = lev;};
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G4int GetVerbosityLevel(){return fVerboseLevel;};
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G4PenelopeGammaConversionModel & operator=(const
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G4PenelopeGammaConversionModel &right) = delete;
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G4PenelopeGammaConversionModel(const G4PenelopeGammaConversionModel&) = delete;
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protected:
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G4ParticleChangeForGamma* fParticleChange;
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const G4ParticleDefinition* fParticle;
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private:
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void SetParticle(const G4ParticleDefinition*);
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void ReadDataFile(const G4int Z);
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void InitializeScreeningFunctions(const G4Material*);
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std::pair<G4double,G4double> GetScreeningFunctions(G4double);
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//Effective (scalar) properties attached to materials:
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// effective charge
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std::map<const G4Material*,G4double> *fEffectiveCharge;
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// 2/Rs (Rs = screening radius), BCB array in Penelope
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std::map<const G4Material*,G4double> *fMaterialInvScreeningRadius;
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// Parameters of screening functions
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std::map<const G4Material*,std::pair<G4double,G4double> > *fScreeningFunction;
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static const G4int fMaxZ =99;
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static G4PhysicsFreeVector* fLogAtomicCrossSection[fMaxZ+1];
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//Z range is 1-99
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static G4double fAtomicScreeningRadius[fMaxZ+1];
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//Intrinsic energy limits of the model: cannot be extended by the parent process
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G4double fIntrinsicLowEnergyLimit;
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G4double fIntrinsicHighEnergyLimit;
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//Use a quicker sampling algorithm if E < smallEnergy
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G4double fSmallEnergy;
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G4int fVerboseLevel;
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G4bool fIsInitialised;
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//Used only for G4EmCalculator and Unit Tests
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G4bool fLocalTable;
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};
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#endif
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