| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . 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 model describing a gamma function dis << 27 //
29 // transition radiation. XTR is considered to << 28 ///////////////////////////////////////////////////////////////////////////
30 // Thicknesses of plates and gas gaps are dist << 29 //
>> 30 // Rough model describing a gamma function distributed radiator of X-ray
>> 31 // transition radiation. XTR is considered to flux after radiator!
>> 32 // Thicknesses of plates and gas gaps are distributed according to gamma
31 // distribution. x are thicknesses of plates o 33 // distribution. x are thicknesses of plates or gas gaps:
32 // 34 //
33 // 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)
34 // 36 //
35 // G(alpha) is Euler's gamma function. 37 // G(alpha) is Euler's gamma function.
36 // Plates have mean <x> = fPlateThick > 0 and 38 // Plates have mean <x> = fPlateThick > 0 and power alpha = fAlphaPlate > 0 :
37 // Gas gaps have mean <x> = fGasThick > 0 and 39 // Gas gaps have mean <x> = fGasThick > 0 and power alpha = fAlphaGas > 0 :
38 // We suppose that: 40 // We suppose that:
39 // formation zone ~ mean thickness << absorpti 41 // formation zone ~ mean thickness << absorption length
40 // 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
41 // interference effects in radiator stack (Get 43 // interference effects in radiator stack (GetStackFactor method).
42 // << 44 //
>> 45 //
43 // History: 46 // History:
44 // 47 //
45 // 03.10.05 V. Grichine, first version << 48 // 03.10.05 V. Grichine, first version
46 // 49 //
47 50
48 #ifndef G4XTRGammaRadModel_h 51 #ifndef G4XTRGammaRadModel_h
49 #define G4XTRGammaRadModel_h 1 52 #define G4XTRGammaRadModel_h 1
50 53
51 #include "G4LogicalVolume.hh" <<
52 #include "G4Material.hh" <<
53 #include "G4VXTRenergyLoss.hh" 54 #include "G4VXTRenergyLoss.hh"
54 55
55 class G4XTRGammaRadModel : public G4VXTRenergy 56 class G4XTRGammaRadModel : public G4VXTRenergyLoss
56 { 57 {
57 public: << 58 public:
58 explicit G4XTRGammaRadModel(G4LogicalVolume* <<
59 G4Material*, G4M <<
60 G4int, <<
61 const G4String& <<
62 ~G4XTRGammaRadModel(); <<
63 59
64 void ProcessDescription(std::ostream&) const << 60 explicit G4XTRGammaRadModel (G4LogicalVolume *anEnvelope,
65 void DumpInfo() const override { ProcessDesc << 61 G4double,G4double,
>> 62 G4Material*,G4Material*,
>> 63 G4double,G4double,G4int,
>> 64 const G4String & processName = "XTRgammaRadiator" );
>> 65 virtual ~G4XTRGammaRadModel ();
66 66
67 G4double GetStackFactor(G4double energy, G4d << 67 // Pure virtual function from base class
>> 68
>> 69 G4double GetStackFactor(G4double energy, G4double gamma,
68 G4double varAngle) o 70 G4double varAngle) override;
>> 71
>> 72 private:
>> 73
>> 74 // G4double fAlphaPlate, fAlphaGas ;
69 }; 75 };
70 76
71 #endif 77 #endif
72 78