include/Geant4/G4MicroElecSurface.hh

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0025 //
0026 //
0027 // G4MicroElecSurface.hh,
0028 //                              2020/05/20 P. Caron, C. Inguimbert are with ONERA [b]
0029 //                         Q. Gibaru is with CEA [a], ONERA [b] and CNES [c]
0030 //                         D. Lambert is with CEA [a]
0031 //
0032 // A part of this work has been funded by the French space agency(CNES[c])
0033 // [a] CEA, DAM, DIF - 91297 ARPAJON, France
0034 // [b] ONERA - DPHY, 2 avenue E.Belin, 31055 Toulouse, France
0035 // [c] CNES, 18 av.E.Belin, 31401 Toulouse CEDEX, France
0036 //
0037 // Based on the following publications
0038 //
0039 //  - Q.Gibaru, C.Inguimbert, P.Caron, M.Raine, D.Lambert, J.Puech,
0040 //        Geant4 physics processes for microdosimetry and secondary electron emission simulation :
0041 //        Extension of MicroElec to very low energies and new materials
0042 //        NIM B, 2020, in review.
0043 //
0044 // Based on:
0045 //      -the class G4OpBoundaryProcess.cc for the surface crossing of
0046 //      optical photons.
0047 //
0048 //
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 #ifndef G4MicroElecSurface_h
0052 #define G4MicroElecSurface_h 1
0053
0054 /////////////
0055 // Includes
0056 /////////////
0057
0058 #include "globals.hh"
0059 #include "templates.hh"
0060 #include "geomdefs.hh"
0061 #include "Randomize.hh"
0062 #include "G4ProductionCutsTable.hh"
0063 #include "G4RandomTools.hh"
0064 #include "G4RandomDirection.hh"
0065 #include "G4MicroElecMaterialStructure.hh"
0066 #include "G4Step.hh"
0067 #include "G4VDiscreteProcess.hh"
0068 #include "G4DynamicParticle.hh"
0069 #include "G4Material.hh"
0070 #include "G4LogicalBorderSurface.hh"
0071 #include "G4LogicalSkinSurface.hh"
0072 #include "G4OpticalPhoton.hh"
0073 #include "G4Electron.hh"
0074 #include "G4TransportationManager.hh"
0075
0076 // Class Description:
0077 // Discrete Process -- reflection/refraction at interfaces for electrons.
0078 // Class inherits publicly from G4VDiscreteProcess.
0079 // Class Description - End:
0080
0081 /////////////////////
0082 // Class Definition
0083 /////////////////////
0084
0085 enum G4MicroElecSurfaceStatus {  UndefinedSurf,
0086                  NotAtBoundarySurf,
0087                  SameMaterialSurf,
0088                  StepTooSmallSurf };
0089
0090 class G4MicroElecSurface : public G4VDiscreteProcess
0091 {
0092  public:
0093   explicit G4MicroElecSurface(const G4String& processName = "MicroElecSurface",
0094                   G4ProcessType type = fElectromagnetic);
0095
0096   ~G4MicroElecSurface() override;
0097
0098   G4bool IsApplicable(const G4ParticleDefinition& aParticleType) override;
0099   // Returns true -> 'is applicable' only for an electron.
0100
0101   void SetFlagFranchissement();
0102
0103   G4double GetMeanFreePath(const G4Track& ,
0104                G4double ,
0105                G4ForceCondition* condition) override;
0106   // Returns infinity; i. e. the process does not limit the step,
0107   // but sets the 'Forced' condition for the DoIt to be invoked at
0108   // every step. However, only at a boundary will any action be
0109   // taken.
0110
0111   G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
0112                   const G4Step&  aStep) override;
0113   // This is the method implementing boundary processes.
0114
0115   void BuildPhysicsTable(const G4ParticleDefinition&) override;
0116   // Initialisation
0117
0118   G4MicroElecSurfaceStatus GetStatus() const;
0119   // Returns the current status.
0120
0121   G4MicroElecSurface(const G4MicroElecSurface &right) = delete;
0122   G4MicroElecSurface& operator=(const G4MicroElecSurface &right) = delete;
0123
0124   void Initialise();
0125
0126 private:
0127    // Returns the incident angle of electron
0128   G4double GetIncidentAngle();
0129   G4ThreeVector Reflexion(const G4StepPoint* PostStepPoint);
0130
0131   // private elements
0132   typedef std::map<G4String, G4double, std::less<G4String> > WorkFunctionTable;
0133   WorkFunctionTable tableWF; //Table of all materials simulated
0134
0135   G4double theParticleMomentum;
0136   G4ThreeVector oldMomentum, previousMomentum;
0137   G4ThreeVector theGlobalNormal;
0138   G4ThreeVector theFacetNormal;
0139   const G4Material* material1;
0140   const G4Material* material2;
0141   G4MicroElecSurfaceStatus theStatus;
0142
0143   G4double kCarTolerance;
0144   G4double ekint, thetat, thetaft, energyThreshold, crossingProbability;
0145   G4bool flag_franchissement_surface, flag_reflexion,flag_normal, teleportToDo, teleportDone, isInitialised;
0146
0147 };
0148
0149 #endif