1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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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 | // |
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27 | // |
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28 | // |
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29 | |
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30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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32 | |
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33 | #ifndef F04GlobalField_h |
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34 | #define F04GlobalField_h 1 |
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35 | |
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36 | #include <vector> |
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37 | |
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38 | #include "G4FieldManager.hh" |
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39 | #include "G4PropagatorInField.hh" |
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40 | #include "G4MagIntegratorStepper.hh" |
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41 | #include "G4ChordFinder.hh" |
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42 | |
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43 | #include "G4MagneticField.hh" |
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44 | #include "G4ElectroMagneticField.hh" |
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45 | |
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46 | #include "G4Mag_EqRhs.hh" |
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47 | #include "G4Mag_SpinEqRhs.hh" |
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48 | |
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49 | #include "G4EqMagElectricField.hh" |
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50 | #include "G4EqEMFieldWithSpin.hh" |
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51 | |
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52 | #include "F04FieldMessenger.hh" |
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53 | #include "F04ElementField.hh" |
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54 | |
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55 | // F04GlobalField - handles the global ElectroMagnetic field |
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56 | // |
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57 | // There is a single G04GlobalField object. |
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58 | // |
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59 | // The field from each individual beamline element is given by a |
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60 | // ElementField object. Any number of overlapping ElementField |
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61 | // objects can be added to the global field. Any element that |
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62 | // represents an element with an EM field must add the appropriate |
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63 | // ElementField to the global GlobalField object. |
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64 | |
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65 | typedef std::vector<F04ElementField*> FieldList; |
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66 | |
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67 | class F04GlobalField : public G4ElectroMagneticField { |
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68 | //class F04GlobalField : public G4MagneticField { |
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69 | |
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70 | private: |
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71 | |
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72 | F04GlobalField(); |
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73 | F04GlobalField(const F04GlobalField&); |
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74 | |
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75 | ~F04GlobalField(); |
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76 | |
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77 | F04GlobalField& operator=(const F04GlobalField&); |
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78 | |
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79 | void setupArray(); |
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80 | |
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81 | public: |
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82 | |
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83 | /// getObject() returns the single F04GlobalField object. |
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84 | /// It is constructed, if necessary. |
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85 | static F04GlobalField* getObject(); |
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86 | |
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87 | /// GetFieldValue() returns the field value at a given point[]. |
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88 | /// field is really field[6]: Bx,By,Bz,Ex,Ey,Ez. |
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89 | /// point[] is in global coordinates: x,y,z,t. |
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90 | void GetFieldValue(const G4double* point, G4double* field) const; |
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91 | |
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92 | /// DoesFieldChangeEnergy() returns true. |
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93 | G4bool DoesFieldChangeEnergy() const { return true; } |
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94 | |
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95 | /// addElementField() adds the ElementField object for a single |
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96 | /// element to the global field. |
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97 | void addElementField(F04ElementField* f) { if (fields) fields->push_back(f); } |
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98 | |
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99 | /// clear() removes all ElementField-s from the global object, |
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100 | /// and destroys them. Used before the geometry is completely |
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101 | /// re-created. |
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102 | void clear(); |
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103 | |
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104 | /// updates all field tracking objects and clear() |
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105 | void updateField(); |
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106 | |
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107 | /// Set the Stepper types |
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108 | void SetStepperType( G4int i ) { fStepperType = i; } |
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109 | |
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110 | /// Set the Stepper |
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111 | void SetStepper(); |
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112 | |
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113 | /// Set the minimum step length |
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114 | void SetMinStep(G4double s) { minStep = s; } |
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115 | |
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116 | /// Set the delta chord length |
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117 | void SetDeltaChord(G4double s) { deltaChord = s; } |
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118 | |
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119 | /// Set the delta one step length |
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120 | void SetDeltaOneStep(G4double s) { deltaOneStep = s; } |
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121 | |
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122 | /// Set the delta intersection length |
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123 | void SetDeltaIntersection(G4double s) { deltaIntersection = s; } |
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124 | |
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125 | /// Set the minimum eps length |
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126 | void SetEpsMin(G4double s) { epsMin = s; } |
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127 | |
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128 | /// Set the maximum eps length |
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129 | void SetEpsMax(G4double s) { epsMax = s; } |
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130 | |
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131 | /// Return the list of Element Fields |
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132 | FieldList* getFields() { return fields; } |
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133 | |
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134 | protected: |
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135 | |
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136 | /// Get the global field manager |
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137 | G4FieldManager* GetGlobalFieldManager(); |
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138 | |
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139 | private: |
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140 | |
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141 | static F04GlobalField* object; |
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142 | |
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143 | G4int nfp; |
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144 | G4bool first; |
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145 | |
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146 | FieldList* fields; |
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147 | |
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148 | const F04ElementField **fp; |
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149 | |
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150 | private: |
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151 | |
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152 | G4int fStepperType; |
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153 | |
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154 | G4double minStep; |
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155 | G4double deltaChord; |
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156 | G4double deltaOneStep; |
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157 | G4double deltaIntersection; |
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158 | G4double epsMin; |
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159 | G4double epsMax; |
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160 | |
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161 | // G4Mag_EqRhs* fEquation; |
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162 | // G4Mag_SpinEqRhs* fEquation; |
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163 | |
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164 | // G4EqMagElectricField* fEquation; |
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165 | G4EqEMFieldWithSpin* fEquation; |
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166 | |
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167 | G4FieldManager* fFieldManager; |
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168 | G4PropagatorInField* fFieldPropagator; |
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169 | G4MagIntegratorStepper* fStepper; |
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170 | G4ChordFinder* fChordFinder; |
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171 | |
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172 | F04FieldMessenger* fFieldMessenger; |
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173 | |
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174 | }; |
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175 | |
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176 | #endif |
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