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1 // 2 // ******************************************************************** 3 // * License and Disclaimer * 4 // * * 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. * 10 // * * 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 25 // 26 /////////////////////////////////////////////////////////////////////////// 27 // 28 // Process describing a radiator of X-ray transition radiation. 29 // Regular radiator with thicknesses of plates and gas gaps are Gauss-distributed. 30 // We suppose that: 31 // formation zone ~ mean thickness << absorption length 32 // for each material and in the range 1-100 keV. This allows us to simplify 33 // interference effects in radiator stack (GetStackFactor method). 34 // The XTR photons are moved to the end of radiator. 35 // 36 // History: 37 // 38 // 19.04.24 V. Grichine, first version 39 // 40 41 #ifndef G4XTRGaussRadModel_h 42 #define G4XTRGaussRadModel_h 1 43 44 #include "G4LogicalVolume.hh" 45 #include "G4Material.hh" 46 #include "G4VXTRenergyLoss.hh" 47 48 class G4XTRGaussRadModel : public G4VXTRenergyLoss 49 { 50 public: 51 explicit G4XTRGaussRadModel( 52 G4LogicalVolume* anEnvelope, G4double, G4double, G4Material*, G4Material*, G4double, G4double, 53 G4int, const G4String& processName = "XTRGaussRadModel"); 54 ~G4XTRGaussRadModel() override; 55 56 // reimplementation of base class function in analytical way 57 58 G4double SpectralXTRdEdx(G4double energy) override; 59 60 G4double GetStackFactor(G4double energy, G4double gamma, 61 G4double varAngle) override; 62 63 void ProcessDescription(std::ostream&) const override; 64 void DumpInfo() const override { ProcessDescription(G4cout); }; 65 66 }; 67 68 #endif 69