include/Geant4/G4StrawTubeXTRadiator.hh

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0025 //
0026 ///////////////////////////////////////////////////////////////////////////
0027 //
0028 // Process describing a straw tube radiator of X-ray transition radiation.
0029 // Thicknesses of plates and gas gaps are gamma distributed.
0030 // We suppose that:
0031 // formation zone ~ mean thickness << absorption length
0032 // for each material and in the range 1-100 keV. This allows us to simplify
0033 // interference effects in radiator stack (GetStackFactor method).
0034 //
0035 // History:
0036 // 22.04.05 V. Grichine, first version
0037 // 28.09.07, V.Ivanchenko general cleanup without change of algorithms
0038 //
0039
0040 #ifndef G4StrawTubeXTRadiator_h
0041 #define G4StrawTubeXTRadiator_h 1
0042
0043 #include "globals.hh"
0044 #include "G4LogicalVolume.hh"
0045 #include "G4Material.hh"
0046 #include "G4VXTRenergyLoss.hh"
0047
0048 class G4SandiaTable;
0049
0050 class G4StrawTubeXTRadiator : public G4VXTRenergyLoss
0051 {
0052  public:
0053   explicit G4StrawTubeXTRadiator(
0054     G4LogicalVolume* anEnvelope, G4Material*, G4Material*, G4double, G4double,
0055     G4Material*, G4bool unishut = false,
0056     const G4String& processName = "StrawTubeXTRadiator");
0057   ~G4StrawTubeXTRadiator();
0058
0059   // Auxiliary functions for plate/gas material parameters
0060   G4double GetMediumFormationZone(G4double, G4double, G4double);
0061   void ComputeMediumPhotoAbsCof();
0062   G4double GetMediumLinearPhotoAbs(G4double);
0063   G4complex GetMediumComplexFZ(G4double, G4double, G4double);
0064
0065   G4double GetStackFactor(G4double energy, G4double gamma,
0066                           G4double varAngle) override;
0067
0068   void ProcessDescription(std::ostream&) const override;
0069   void DumpInfo() const override { ProcessDescription(G4cout); };
0070
0071  protected:
0072   G4SandiaTable* fMediumPhotoAbsCof;
0073
0074   G4double fSigma3;
0075
0076   G4int fMatIndex3;
0077 };
0078
0079 #endif