Geant4 Cross Reference |
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These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 ////////////////////////////////////////////// << 27 // 26 // 28 // Rough process describing a radiator of X-ra << 27 // 29 // Thicknesses of plates and gas gaps are dist << 28 // >> 29 /////////////////////////////////////////////////////////////////////////// >> 30 // >> 31 // Rough process describing a radiator of X-ray transition radiation. >> 32 // Thicknesses of plates and gas gaps are distributed according to gamma 30 // distribution. x are thicknesses of plates o 33 // distribution. x are thicknesses of plates or gas gaps: 31 // 34 // 32 // p(x) = (alpha/<x>)^alpha * x^(alpha-1) * st 35 // p(x) = (alpha/<x>)^alpha * x^(alpha-1) * std::exp(-alpha*x/<x>) / G(alpha) 33 // 36 // 34 // G(alpha) is Euler's gamma function. 37 // G(alpha) is Euler's gamma function. 35 // Plates have mean <x> = fPlateThick > 0 and 38 // Plates have mean <x> = fPlateThick > 0 and power alpha = fAlphaPlate > 0 : 36 // Gas gaps have mean <x> = fGasThick > 0 and 39 // Gas gaps have mean <x> = fGasThick > 0 and power alpha = fAlphaGas > 0 : 37 // We suppose that: 40 // We suppose that: 38 // formation zone ~ mean thickness << absorpti 41 // formation zone ~ mean thickness << absorption length 39 // for each material and in the range 1-100 ke 42 // for each material and in the range 1-100 keV. This allows us to simplify 40 // interference effects in radiator stack (Get 43 // interference effects in radiator stack (GetStackFactor method). 41 // << 44 // >> 45 // 42 // History: 46 // History: 43 // 21.01.02 V. Grichine, first version << 47 // 21.01.02 V. Grichine, first version 44 // 48 // 45 49 >> 50 46 #ifndef G4GammaXTRadiator_h 51 #ifndef G4GammaXTRadiator_h 47 #define G4GammaXTRadiator_h 1 52 #define G4GammaXTRadiator_h 1 48 53 49 #include "G4LogicalVolume.hh" << 50 #include "G4Material.hh" << 51 #include "G4VXTRenergyLoss.hh" 54 #include "G4VXTRenergyLoss.hh" 52 55 53 class G4GammaXTRadiator : public G4VXTRenergyL 56 class G4GammaXTRadiator : public G4VXTRenergyLoss 54 { 57 { 55 public: << 58 public: 56 explicit G4GammaXTRadiator(G4LogicalVolume* << 59 57 G4Material*, G4Ma << 60 explicit G4GammaXTRadiator (G4LogicalVolume *anEnvelope, 58 G4int, << 61 G4double,G4double, 59 const G4String& p << 62 G4Material*,G4Material*, 60 ~G4GammaXTRadiator(); << 63 G4double,G4double,G4int, >> 64 const G4String & processName = "XTRgammaRadiator"); >> 65 ~G4GammaXTRadiator (); >> 66 >> 67 // Pure virtual function from base class 61 68 62 void ProcessDescription(std::ostream&) const << 69 G4double GetStackFactor( G4double energy, G4double gamma, 63 void DumpInfo() const override { ProcessDesc << 70 G4double varAngle) override; >> 71 >> 72 private: 64 73 65 G4double GetStackFactor(G4double energy, G4d << 66 G4double varAngle) o << 67 }; 74 }; 68 75 69 #endif 76 #endif >> 77 >> 78 >> 79 >> 80 >> 81 >> 82 70 83