1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: G4AdjointPosOnPhysVolGenerator.hh,v 1.2 2009/11/18 17:57:59 gcosmo Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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28 | // |
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29 | ///////////////////////////////////////////////////////////////////////////////// |
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30 | // Class Name: G4AdjointPosOnPhysVolGenerator |
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31 | // Author: L. Desorgher |
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32 | // Organisation: SpaceIT GmbH |
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33 | // Contract: ESA contract 21435/08/NL/AT |
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34 | // Customer: ESA/ESTEC |
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35 | ///////////////////////////////////////////////////////////////////////////////// |
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36 | // |
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37 | // CHANGE HISTORY |
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38 | // -------------- |
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39 | // ChangeHistory: |
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40 | // 1st June 2006 creation by L. Desorgher |
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41 | // |
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42 | //------------------------------------------------------------- |
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43 | // Documentation: |
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44 | // This class is responsible for the generation of primary adjoint particle on the external surface of a user selected volume. |
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45 | // The particle are generated uniformly on the surface with the angular distribution set to a cosine law relative to normal of the surface. |
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46 | // It is equivalent to the flux going in from the surface if an isotropic flux is considered outside. |
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47 | // It uses ray tracking technique and can be applied to all kind of convex volume. Uisng the ray tracking technique the area |
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48 | // of the external surface is also computed. The area is needed to fix the weight of the primary adjoint particle. |
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49 | // At the time of the development of this class, generation of particle on volume surface and computation of surface was limited in G4, |
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50 | // therfore the general ray tracking technique was adopted. It could be now (2009) that direct method of G4VSolid could be used instead. To be checked! |
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51 | // |
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52 | // |
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53 | // |
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54 | #ifndef G4AdjointPosOnPhysVolGenerator_h |
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55 | #define G4AdjointPosOnPhysVolGenerator_h 1 |
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56 | |
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57 | #include "G4VPhysicalVolume.hh" |
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58 | #include "G4AffineTransform.hh" |
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59 | #include "G4ThreeVector.hh" |
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60 | |
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61 | class G4VSolid; |
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62 | |
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63 | class G4AdjointPosOnPhysVolGenerator |
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64 | /////////////////////// |
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65 | { |
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66 | |
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67 | //-------- |
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68 | public: //without description |
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69 | //-------- |
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70 | |
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71 | static G4AdjointPosOnPhysVolGenerator* GetInstance(); |
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72 | |
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73 | //-------- |
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74 | public: //public methods |
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75 | //-------- |
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76 | G4VPhysicalVolume* DefinePhysicalVolume(const G4String& aName); |
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77 | void DefinePhysicalVolume1(const G4String& aName); |
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78 | G4double ComputeAreaOfExtSurface(); |
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79 | G4double ComputeAreaOfExtSurface(G4int NStat); |
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80 | G4double ComputeAreaOfExtSurface(G4double epsilon); |
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81 | G4double ComputeAreaOfExtSurface(G4VSolid* aSolid); |
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82 | G4double ComputeAreaOfExtSurface(G4VSolid* aSolid,G4int NStat); |
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83 | G4double ComputeAreaOfExtSurface(G4VSolid* aSolid,G4double epsilon); |
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84 | |
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85 | void GenerateAPositionOnTheExtSurfaceOfASolid(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction); |
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86 | void GenerateAPositionOnTheExtSurfaceOfTheSolid(G4ThreeVector& p, G4ThreeVector& direction); |
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87 | void GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction); |
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88 | void GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction, |
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89 | G4double& costh_to_normal); |
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90 | |
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91 | //inline public methods |
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92 | |
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93 | inline void SetSolid(G4VSolid* aSolid){theSolid=aSolid;} |
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94 | inline G4double GetAreaOfExtSurfaceOfThePhysicalVolume(){return AreaOfExtSurfaceOfThePhysicalVolume;} |
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95 | inline G4double GetCosThDirComparedToNormal(){return CosThDirComparedToNormal;} |
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96 | |
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97 | //--------- |
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98 | private: //private methods |
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99 | //--------- |
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100 | G4AdjointPosOnPhysVolGenerator(); |
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101 | ~G4AdjointPosOnPhysVolGenerator(); |
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102 | G4double ComputeAreaOfExtSurfaceStartingFromSphere(G4VSolid* aSolid,G4int NStat); |
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103 | G4double ComputeAreaOfExtSurfaceStartingFromBox(G4VSolid* aSolid,G4int NStat); |
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104 | void GenerateAPositionOnASolidBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction); |
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105 | G4double GenerateAPositionOnASphereBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction); |
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106 | G4double GenerateAPositionOnABoxBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction); |
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107 | void ComputeTransformationFromPhysVolToWorld(); |
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108 | |
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109 | //--------- |
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110 | private: //attributes |
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111 | //--------- |
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112 | static G4AdjointPosOnPhysVolGenerator* theInstance; |
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113 | G4VSolid* theSolid; |
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114 | G4VPhysicalVolume* thePhysicalVolume; |
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115 | G4int NStat; |
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116 | G4double epsilon; |
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117 | G4bool UseSphere; |
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118 | G4String ModelOfSurfaceSource; |
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119 | G4double ExtSourceRadius; |
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120 | G4double ExtSourceDx,ExtSourceDy,ExtSourceDz ; |
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121 | G4AffineTransform theTransformationFromPhysVolToWorld; |
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122 | G4double AreaOfExtSurfaceOfThePhysicalVolume; |
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123 | G4double CosThDirComparedToNormal; |
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124 | }; |
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125 | |
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126 | #endif |
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127 | |
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