Gabriele Cosmo
96 lines
4.1 KiB
C++
96 lines
4.1 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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// Class: G4AdjointBremsstrahlungModel
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// Author: L. Desorgher
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// Organisation: SpaceIT GmbH
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////////////////////////////////////////////////////////////////////////////////
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//
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// Adjoint Model for e- Bremsstrahlung.Adapted from G4eBremsstrahlungModel
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// Use of a simple biased differential cross section (C(Z)/Egamma) allowing a
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// rapid computation of adjoint CS and rapid sampling of adjoint secondaries.
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// In this way cross section matrices are not used anymore, avoiding a long
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// computation of adjoint brem cross section matrices for each material
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// at initialisation. This mode can be switched on/off by selecting
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// SetUseMatrix(false)/ SetUseMatrix(true) in the constructor.
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//
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//-------------------------------------------------------------
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#ifndef G4AdjointBremsstrahlungModel_h
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#define G4AdjointBremsstrahlungModel_h 1
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#include "globals.hh"
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#include "G4VEmAdjointModel.hh"
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class G4AdjointCSManager;
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class G4EmModelManager;
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class G4ParticleDefinition;
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class G4AdjointBremsstrahlungModel : public G4VEmAdjointModel
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{
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public:
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explicit G4AdjointBremsstrahlungModel(G4VEmModel* aModel);
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G4AdjointBremsstrahlungModel();
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~G4AdjointBremsstrahlungModel() override;
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void SampleSecondaries(const G4Track& aTrack, G4bool isScatProjToProj,
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G4ParticleChange* fParticleChange) override;
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void RapidSampleSecondaries(const G4Track& aTrack, G4bool isScatProjToProj,
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G4ParticleChange* fParticleChange);
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G4double DiffCrossSectionPerVolumePrimToSecond(
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const G4Material* aMaterial,
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G4double kinEnergyProj, // kinetic energy of the primary particle before
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// the interaction
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G4double kinEnergyProd // kinetic energy of the secondary particle
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) override;
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G4double AdjointCrossSection(const G4MaterialCutsCouple* aCouple,
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G4double primEnergy,
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G4bool isScatProjToProj) override;
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G4AdjointBremsstrahlungModel(G4AdjointBremsstrahlungModel&) = delete;
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G4AdjointBremsstrahlungModel& operator=(
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const G4AdjointBremsstrahlungModel& right) = delete;
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private:
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void Initialize();
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G4EmModelManager* fEmModelManagerForFwdModels;
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G4AdjointCSManager* fCSManager;
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G4ParticleDefinition* fElectron;
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G4ParticleDefinition* fGamma;
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G4double fLastCZ = 0.;
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G4bool fIsDirectModelInitialised = false;
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};
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#endif
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