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 | // GEANT 4 example main |
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28 | // ------------------------------------------------------------ |
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29 | // |
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30 | // History: |
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31 | // - Created: P. Arce May 2007 |
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32 | // |
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33 | |
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34 | #include "ExErrorDetectorConstruction.hh" |
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35 | #include "G4SteppingVerbose.hh" |
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36 | |
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37 | #include "G4ErrorPropagator.hh" |
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38 | #include "G4ErrorPropagatorData.hh" |
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39 | #include "G4ErrorPropagatorManager.hh" |
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40 | #include "G4ErrorPlaneSurfaceTarget.hh" |
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41 | #include "G4ErrorCylSurfaceTarget.hh" |
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42 | #include "G4ErrorGeomVolumeTarget.hh" |
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43 | #include "G4ErrorTrackLengthTarget.hh" |
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44 | #include "G4ErrorFreeTrajState.hh" |
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45 | |
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46 | #include "G4UImanager.hh" |
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47 | |
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48 | void Initialize(); |
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49 | G4ErrorTarget* BuildTarget( G4int iTarget ); |
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50 | void ProcessEvent( G4int iProp, size_t nEv ); |
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51 | void Finalize(); |
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52 | |
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53 | G4ErrorTarget* theTarget; |
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54 | G4ErrorMode theG4ErrorMode; |
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55 | |
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56 | //------------------------------------------------------------- |
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57 | int main() |
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58 | { |
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59 | |
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60 | Initialize(); |
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61 | |
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62 | //----- Choose propagation mode |
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63 | // 0: propagate until target, all steps in one go |
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64 | // 1: propagate until target, returning control to the user at each step |
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65 | G4int iProp = 0; |
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66 | char* prop = getenv("G4ERROR_PROP"); |
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67 | if( prop ) { |
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68 | if( G4String(prop) == G4String("UNTIL_TARGET") ){ |
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69 | iProp = 0; |
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70 | } else if ( G4String(prop) == G4String("STEP_BY_STEP") ) { |
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71 | iProp = 1; |
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72 | } else { |
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73 | G4Exception("exG4eReco","Fatal error in Argument",FatalErrorInArgument,G4String("Variable G4ERROR_PROP = " + G4String(prop) + " It must be: UNTIL_TARGET or STEP_BY_STEP").c_str()); |
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74 | } |
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75 | } else { |
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76 | G4Exception("exG4eReco","Fatal error in Argument",JustWarning,"Variable G4ERROR_PROP not defined, taking it = UNTIL_TARGET"); |
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77 | } |
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78 | |
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79 | size_t nEvents = 3; |
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80 | for( size_t ii = 0; ii < nEvents; ii++ ){ |
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81 | ProcessEvent( iProp, ii ); |
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82 | } |
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83 | |
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84 | Finalize(); |
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85 | |
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86 | } |
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87 | |
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88 | |
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89 | //------------------------------------------------------------- |
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90 | void Initialize() |
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91 | { |
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92 | G4VSteppingVerbose::SetInstance(new G4SteppingVerbose); |
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93 | |
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94 | // Initialize the GEANT4e manager |
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95 | G4ErrorPropagatorManager* g4emgr = G4ErrorPropagatorManager::GetErrorPropagatorManager(); |
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96 | G4ErrorPropagatorData* g4edata = G4ErrorPropagatorData::GetErrorPropagatorData(); |
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97 | |
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98 | g4emgr->SetUserInitialization(new ExErrorDetectorConstruction); |
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99 | |
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100 | G4UImanager::GetUIpointer()->ApplyCommand("/exerror/setField -10. kilogauss"); |
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101 | |
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102 | g4emgr->InitGeant4e(); |
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103 | |
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104 | G4UImanager::GetUIpointer()->ApplyCommand("/control/verbose 1"); |
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105 | G4UImanager::GetUIpointer()->ApplyCommand("/tracking/verbose 1"); |
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106 | G4UImanager::GetUIpointer()->ApplyCommand("/geant4e/limits/stepLength 100 mm"); |
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107 | |
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108 | //----- Choose target type: |
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109 | // 1: PlaneSurfaceTarget |
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110 | // 2: CylSurfaceTarget |
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111 | // 3: GeomVolumeTarget |
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112 | // 4: TrackLengthTarget |
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113 | G4int iTarget = 1; |
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114 | char* target = getenv("G4ERROR_TARGET"); |
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115 | if( target ) { |
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116 | if( G4String(target) == G4String("PLANE_SURFACE") ) { |
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117 | iTarget = 1; |
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118 | }else if( G4String(target) == G4String("CYL_SURFACE") ) { |
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119 | iTarget = 2; |
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120 | }else if( G4String(target) == G4String("VOLUME") ) { |
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121 | iTarget = 3; |
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122 | }else if( G4String(target) == G4String("TRKLEN") ) { |
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123 | iTarget = 4; |
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124 | }else { |
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125 | G4Exception("exG4eReco","Fatal error in Argument",FatalErrorInArgument,G4String("Variable G4ERROR_TARGET = " + G4String(target) + " It must be: PLANE_SURFACE, CYL_SURFACE, VOLUME, TRKLEN").c_str()); |
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126 | } |
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127 | } else { |
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128 | G4Exception("exG4eReco","Fatal error in Argument",JustWarning,"Variable G4ERROR_TARGET not defined, taking it = PLANE_SURFACE"); |
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129 | } |
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130 | |
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131 | theTarget = BuildTarget( iTarget ); |
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132 | g4edata->SetTarget( theTarget ); |
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133 | |
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134 | theG4ErrorMode = G4ErrorMode_PropBackwards; |
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135 | char* mode = getenv("G4ERROR_MODE"); |
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136 | if( mode ) { |
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137 | if( G4String(mode) == G4String("FORWARDS") ) { |
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138 | theG4ErrorMode = G4ErrorMode_PropForwards; |
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139 | } else if( G4String(mode) == G4String("BACKWARDS") ) { |
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140 | theG4ErrorMode = G4ErrorMode_PropBackwards; |
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141 | } else { |
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142 | G4Exception("exG4eReco","Fatal error in Argument",FatalErrorInArgument,G4String("Variable G4ERROR_MODE = " + G4String(mode) + " It must be: FORWARDS or BACKWARDS").c_str()); |
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143 | } |
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144 | } else { |
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145 | G4Exception("exG4eReco","Fatal error in Argument",JustWarning,"Variable G4ERROR_MODE not defined, taking it = BACKWARDS"); |
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146 | } |
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147 | |
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148 | } |
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149 | |
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150 | |
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151 | void ProcessEvent( G4int iProp, size_t ) |
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152 | { |
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153 | |
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154 | // Set the starting trajectory. |
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155 | G4ThreeVector xv3( 0, 0, 0 ); |
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156 | G4ThreeVector pv3( 20.0*GeV, 0.0, 0.0 ); |
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157 | G4ErrorTrajErr error( 5, 0 ); |
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158 | G4ErrorFreeTrajState* theG4ErrorTrajState = new G4ErrorFreeTrajState( "mu-", xv3, pv3, error ); |
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159 | |
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160 | G4ErrorPropagatorManager* g4emgr = G4ErrorPropagatorManager::GetErrorPropagatorManager(); |
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161 | |
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162 | int ierr = 0; |
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163 | |
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164 | G4Point3D surfPos(224.*cm,0.,0.); |
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165 | G4Normal3D surfNorm(1.,0.,0.); |
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166 | //- G4ErrorTarget* theG4ErrorTarget = new G4ErrorPlaneSurfaceTarget(surfNorm, surfPos ); |
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167 | |
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168 | if( iProp == 0){ |
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169 | // Propagate until G4ErrorTarget is found all in one go |
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170 | ierr = g4emgr->Propagate( theG4ErrorTrajState, theTarget, theG4ErrorMode ); |
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171 | } else if( iProp == 1){ |
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172 | |
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173 | // Propagate until G4ErrorTarget is reached step by step |
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174 | |
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175 | g4emgr->InitTrackPropagation(); |
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176 | |
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177 | // G4Track* aTrack = G4EventManager::GetEventManager()->GetTrackingManager()->GetTrack(); |
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178 | bool moreEvt = TRUE; |
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179 | while( moreEvt ){ |
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180 | |
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181 | ierr = g4emgr->PropagateOneStep( theG4ErrorTrajState, theG4ErrorMode ); |
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182 | |
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183 | //---- Check if target is reached |
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184 | if( g4emgr->GetPropagator()->CheckIfLastStep( theG4ErrorTrajState->GetG4Track() )) { |
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185 | g4emgr->GetPropagator()->InvokePostUserTrackingAction( theG4ErrorTrajState->GetG4Track() ); |
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186 | moreEvt = 0; |
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187 | G4cout << "STEP_BY_STEP propagation: Last Step " << G4endl; |
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188 | } |
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189 | } |
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190 | } |
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191 | |
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192 | G4cout << " $$$ PROPAGATION ENDED " << G4endl; |
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193 | // extract current state info |
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194 | G4Point3D posEnd = theG4ErrorTrajState->GetPosition(); |
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195 | G4Normal3D momEnd = theG4ErrorTrajState->GetMomentum(); |
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196 | G4ErrorTrajErr errorEnd = theG4ErrorTrajState->GetError(); |
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197 | |
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198 | G4cout << " Position: " << posEnd << G4endl |
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199 | << " Momentum: " << momEnd << G4endl |
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200 | << " Error: " << errorEnd << G4endl; |
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201 | } |
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202 | |
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203 | |
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204 | //------------------------------------------------------------- |
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205 | G4ErrorTarget* BuildTarget( G4int iTarget ) |
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206 | { |
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207 | |
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208 | G4ErrorTarget* target = 0; |
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209 | if( iTarget == 1 ) { |
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210 | G4Point3D surfPos(221.*cm,0.,0.); |
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211 | G4Normal3D surfNorm(1.,0.,0.); |
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212 | target = new G4ErrorPlaneSurfaceTarget(surfNorm, surfPos ); |
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213 | }else if( iTarget == 2 ) { |
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214 | G4double radius = 222*cm; |
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215 | target = new G4ErrorCylSurfaceTarget(radius); |
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216 | }else if( iTarget == 3 ) { |
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217 | target = new G4ErrorGeomVolumeTarget("MUON"); |
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218 | }else if( iTarget == 4 ) { |
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219 | target = new G4ErrorTrackLengthTarget(223.*cm); |
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220 | }else { |
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221 | G4Exception("exG4eReco::BuildTarget. Target type has to be between 1 and 4"); |
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222 | } |
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223 | return target; |
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224 | } |
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225 | |
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226 | |
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227 | //------------------------------------------------------------- |
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228 | void Finalize() |
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229 | { |
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230 | G4ErrorPropagatorManager::GetErrorPropagatorManager()->CloseGeometry(); |
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231 | |
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232 | } |
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