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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4VRestDiscreteProcess.hh,v 1.9 2007/11/15 04:10:18 kurasige Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03 $ |
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29 | // |
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30 | // |
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31 | // ------------------------------------------------------------ |
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32 | // GEANT 4 class header file |
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33 | // |
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34 | // |
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35 | // Class Description |
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36 | // Abstract class which defines the public behavior of |
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37 | // rest + discrete physics interactions. |
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38 | // |
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39 | // ------------------------------------------------------------ |
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40 | // New Physics scheme 8 Mar. 1997 H.Kurahige |
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41 | // ------------------------------------------------------------ |
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42 | // modified for new ParticleChange 12 Mar. 1998 H.Kurashige |
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43 | // Fixed a bug in PostStepGetPhysicalInteractionLength |
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44 | // 15 Apr. 2002 H.Kurashige |
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45 | // |
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46 | |
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47 | #ifndef G4VRestDiscreteProcess_h |
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48 | #define G4VRestDiscreteProcess_h 1 |
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49 | |
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50 | #include "globals.hh" |
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51 | #include "G4ios.hh" |
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52 | |
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53 | #include "G4VProcess.hh" |
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54 | |
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55 | |
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56 | class G4VRestDiscreteProcess : public G4VProcess |
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57 | { |
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58 | // Abstract class which defines the public behavior of |
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59 | // rest + discrete physics interactions. |
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60 | public: |
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61 | |
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62 | G4VRestDiscreteProcess(const G4String& , |
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63 | G4ProcessType aType = fNotDefined ); |
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64 | G4VRestDiscreteProcess(G4VRestDiscreteProcess &); |
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65 | |
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66 | virtual ~G4VRestDiscreteProcess(); |
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67 | |
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68 | public :// with description |
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69 | virtual G4double PostStepGetPhysicalInteractionLength( |
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70 | const G4Track& track, |
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71 | G4double previousStepSize, |
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72 | G4ForceCondition* condition |
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73 | ); |
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74 | |
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75 | virtual G4VParticleChange* PostStepDoIt( |
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76 | const G4Track& , |
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77 | const G4Step& |
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78 | ); |
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79 | |
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80 | virtual G4double AtRestGetPhysicalInteractionLength( |
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81 | const G4Track& , |
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82 | G4ForceCondition* |
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83 | ); |
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84 | |
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85 | virtual G4VParticleChange* AtRestDoIt( |
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86 | const G4Track& , |
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87 | const G4Step& |
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88 | ); |
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89 | |
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90 | // no operation in AlongStepDoIt |
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91 | virtual G4double AlongStepGetPhysicalInteractionLength( |
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92 | const G4Track&, |
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93 | G4double , |
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94 | G4double , |
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95 | G4double& , |
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96 | G4GPILSelection* |
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97 | ){ return -1.0; }; |
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98 | |
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99 | // no operation in AlongStepDoIt |
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100 | virtual G4VParticleChange* AlongStepDoIt( |
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101 | const G4Track& , |
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102 | const G4Step& |
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103 | ) {return 0;}; |
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104 | |
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105 | protected:// with description |
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106 | virtual G4double GetMeanFreePath(const G4Track& aTrack, |
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107 | G4double previousStepSize, |
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108 | G4ForceCondition* condition |
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109 | )=0; |
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110 | // Calculates from the macroscopic cross section a mean |
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111 | // free path, the value is returned in units of distance. |
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112 | |
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113 | virtual G4double GetMeanLifeTime(const G4Track& aTrack,G4ForceCondition* condition)=0; |
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114 | // Calculates the mean life-time (i.e. for decays) of the |
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115 | // particle at rest due to the occurence of the given process, |
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116 | // or converts the probability of interaction (i.e. for |
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117 | // annihilation) into the life-time of the particle for the |
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118 | // occurence of the given process. |
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119 | |
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120 | private: |
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121 | // hide default constructor and assignment operator as private |
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122 | G4VRestDiscreteProcess(); |
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123 | G4VRestDiscreteProcess & operator=(const G4VRestDiscreteProcess &right); |
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124 | |
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125 | }; |
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126 | |
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127 | // ----------------------------------------- |
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128 | // inlined function members implementation |
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129 | // ----------------------------------------- |
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130 | #include "Randomize.hh" |
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131 | #include "G4Step.hh" |
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132 | #include "G4Track.hh" |
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133 | #include "G4MaterialTable.hh" |
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134 | #include "G4VParticleChange.hh" |
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135 | |
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136 | inline |
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137 | G4double G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength( |
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138 | const G4Track& track, |
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139 | G4double previousStepSize, |
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140 | G4ForceCondition* condition |
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141 | ) |
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142 | { |
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143 | if ( (previousStepSize < 0.0) || (theNumberOfInteractionLengthLeft<=0.0)) { |
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144 | // beggining of tracking (or just after DoIt of this process) |
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145 | ResetNumberOfInteractionLengthLeft(); |
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146 | } else if ( previousStepSize > 0.0) { |
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147 | // subtract NumberOfInteractionLengthLeft |
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148 | SubtractNumberOfInteractionLengthLeft(previousStepSize); |
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149 | } else { |
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150 | // zero step |
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151 | // DO NOTHING |
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152 | } |
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153 | |
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154 | // condition is set to "Not Forced" |
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155 | *condition = NotForced; |
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156 | |
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157 | // get mean free path |
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158 | currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition); |
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159 | |
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160 | G4double value; |
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161 | if (currentInteractionLength <DBL_MAX) { |
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162 | value = theNumberOfInteractionLengthLeft * currentInteractionLength; |
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163 | } else { |
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164 | value = DBL_MAX; |
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165 | } |
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166 | #ifdef G4VERBOSE |
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167 | if (verboseLevel>1){ |
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168 | G4cout << "G4VRestDiscreteProcess::PostStepGetPhysicalInteractionLength "; |
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169 | G4cout << "[ " << GetProcessName() << "]" <<G4endl; |
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170 | track.GetDynamicParticle()->DumpInfo(); |
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171 | G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl; |
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172 | G4cout << "InteractionLength= " << value/cm <<"[cm] " <<G4endl; |
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173 | } |
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174 | #endif |
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175 | return value; |
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176 | } |
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177 | |
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178 | inline G4VParticleChange* G4VRestDiscreteProcess::PostStepDoIt( |
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179 | const G4Track& , |
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180 | const G4Step& |
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181 | ) |
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182 | { |
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183 | // reset NumberOfInteractionLengthLeft |
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184 | ClearNumberOfInteractionLengthLeft(); |
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185 | |
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186 | return pParticleChange; |
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187 | } |
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188 | |
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189 | inline G4double G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength( |
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190 | const G4Track& track, |
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191 | G4ForceCondition* condition |
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192 | ) |
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193 | { |
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194 | // beggining of tracking |
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195 | ResetNumberOfInteractionLengthLeft(); |
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196 | |
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197 | // condition is set to "Not Forced" |
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198 | *condition = NotForced; |
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199 | |
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200 | // get mean life time |
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201 | currentInteractionLength = GetMeanLifeTime(track, condition); |
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202 | |
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203 | #ifdef G4VERBOSE |
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204 | if ((currentInteractionLength <0.0) || (verboseLevel>2)){ |
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205 | G4cout << "G4VRestDiscreteProcess::AtRestGetPhysicalInteractionLength "; |
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206 | G4cout << "[ " << GetProcessName() << "]" <<G4endl; |
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207 | track.GetDynamicParticle()->DumpInfo(); |
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208 | G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl; |
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209 | G4cout << "MeanLifeTime = " << currentInteractionLength/ns << "[ns]" <<G4endl; |
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210 | } |
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211 | #endif |
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212 | |
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213 | return theNumberOfInteractionLengthLeft * currentInteractionLength; |
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214 | } |
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215 | |
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216 | |
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217 | inline G4VParticleChange* G4VRestDiscreteProcess::AtRestDoIt( |
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218 | const G4Track&, |
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219 | const G4Step& |
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220 | ) |
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221 | { |
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222 | // clear NumberOfInteractionLengthLeft |
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223 | ClearNumberOfInteractionLengthLeft(); |
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224 | |
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225 | return pParticleChange; |
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226 | } |
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227 | |
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228 | |
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229 | |
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230 | #endif |
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231 | |
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