include/Geant4/G4DynamicParticleMSC.hh

0001 //
0002 // ********************************************************************
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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4DynamicParticleMSC
0033 //
0034 // Author:        Vladimir Ivanchenko
0035 //
0036 // Creation date: 23.08.2024
0037 //
0038 // Modifications:
0039 //
0040 //
0041 // Class Description:
0042 //
0043 // This class manages the multiple scattering process for heavy charged
0044 // particles without any use of G4ParticleDefinition.
0045 //
0046 // -------------------------------------------------------------------
0047 //
0048
0049 #ifndef G4DynamicParticleMSC_h
0050 #define G4DynamicParticleMSC_h 1
0051
0052 #include "G4VContinuousDiscreteProcess.hh"
0053 #include "G4ParticleChangeForMSC.hh"
0054
0055 class G4Material;
0056 class G4LossTableManager;
0057
0058 class G4DynamicParticleMSC : public G4VContinuousDiscreteProcess
0059 {
0060 public:
0061
0062   G4DynamicParticleMSC();
0063
0064   ~G4DynamicParticleMSC() override;
0065
0066   // Step limit from AlongStep
0067   G4double AlongStepGetPhysicalInteractionLength(
0068                                   const G4Track&,
0069                                   G4double  previousStepSize,
0070                                   G4double  currentMinimumStep,
0071                                   G4double& currentSafety,
0072                                   G4GPILSelection* selection) override;
0073
0074   // Step limit from cross section
0075   G4double PostStepGetPhysicalInteractionLength(
0076                                   const G4Track& track,
0077                                   G4double previousStepSize,
0078                                   G4ForceCondition* condition) override;
0079
0080   // AlongStep computations
0081   G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&) override;
0082
0083   // This method is not used for tracking, it returns mean free path value
0084   G4double GetMeanFreePath(const G4Track&, G4double, G4ForceCondition* condition) override;
0085
0086   // This method is not used for tracking, it returns step limit
0087   G4double GetContinuousStepLimit(const G4Track& track, G4double previousStepSize,
0088                                   G4double currentMinimalStep, G4double& currentSafety) override;
0089
0090   // print description in html
0091   void ProcessDescription(std::ostream&) const override;
0092
0093   // hide assignment operator
0094   G4DynamicParticleMSC & operator=(const G4DynamicParticleMSC &right) = delete;
0095   G4DynamicParticleMSC(const G4DynamicParticleMSC&) = delete;
0096
0097 private:
0098
0099   // all parameters are dynamic
0100   void PreStepInitialisation(const G4Track&);
0101
0102   G4LossTableManager* lManager;
0103   const G4Material* fMaterial{nullptr};
0104
0105   G4double fMass{0.0};
0106   G4double fCharge{0.0};
0107   G4double fEkinPreStep{0.0};
0108   G4double fBeta{0.0};
0109   G4double fZeff{0.0};
0110
0111   G4ThreeVector fNewDir{G4ThreeVector(0.0, 0.0, 0.0)};
0112   G4ParticleChangeForMSC fParticleChange;
0113 };
0114
0115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0116
0117 #endif