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2 | // ******************************************************************** |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: ExN05PionShowerModel.cc,v 1.19 2007/05/18 14:32:35 mverderi Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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29 | // |
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30 | #include "ExN05PionShowerModel.hh" |
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31 | #include "ExN05EnergySpot.hh" |
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32 | |
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33 | #include "Randomize.hh" |
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34 | |
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35 | #include "G4PionMinus.hh" |
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36 | #include "G4PionPlus.hh" |
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37 | #include "G4TransportationManager.hh" |
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38 | #include "G4VSensitiveDetector.hh" |
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39 | #include "G4TouchableHistory.hh" |
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40 | |
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41 | #include "G4Colour.hh" |
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42 | |
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43 | ExN05PionShowerModel::ExN05PionShowerModel(G4String modelName, G4Region* envelope) |
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44 | : G4VFastSimulationModel(modelName, envelope) |
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45 | { |
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46 | fFakeStep = new G4Step(); |
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47 | fFakePreStepPoint = fFakeStep->GetPreStepPoint(); |
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48 | fFakePostStepPoint = fFakeStep->GetPostStepPoint(); |
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49 | fTouchableHandle = new G4TouchableHistory(); |
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50 | fpNavigator = new G4Navigator(); |
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51 | fNaviSetup = false; |
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52 | } |
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53 | |
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54 | ExN05PionShowerModel::ExN05PionShowerModel(G4String modelName) |
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55 | : G4VFastSimulationModel(modelName) |
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56 | { |
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57 | fFakeStep = new G4Step(); |
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58 | fFakePreStepPoint = fFakeStep->GetPreStepPoint(); |
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59 | fFakePostStepPoint = fFakeStep->GetPostStepPoint(); |
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60 | fTouchableHandle = new G4TouchableHistory(); |
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61 | fpNavigator = new G4Navigator(); |
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62 | fNaviSetup = false; |
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63 | } |
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64 | |
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65 | ExN05PionShowerModel::~ExN05PionShowerModel() |
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66 | { |
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67 | delete fFakeStep; |
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68 | delete fpNavigator; |
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69 | } |
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70 | |
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71 | G4bool ExN05PionShowerModel::IsApplicable(const G4ParticleDefinition& particleType) |
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72 | { |
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73 | return |
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74 | &particleType == G4PionMinus::PionMinusDefinition() || |
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75 | &particleType == G4PionPlus::PionPlusDefinition(); |
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76 | } |
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77 | |
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78 | G4bool ExN05PionShowerModel::ModelTrigger(const G4FastTrack&) |
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79 | { |
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80 | // Applies the parameterisation always: |
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81 | // ie as soon as the pion enters the envelope |
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82 | return true; |
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83 | } |
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84 | |
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85 | void ExN05PionShowerModel::DoIt(const G4FastTrack& fastTrack, |
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86 | G4FastStep& fastStep) |
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87 | { |
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88 | // G4cout << "ExN05PionShowerModel::DoIt" << G4endl; |
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89 | |
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90 | // Kill the parameterised particle: |
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91 | fastStep.KillPrimaryTrack(); |
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92 | fastStep.ProposePrimaryTrackPathLength(0.0); |
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93 | fastStep.ProposeTotalEnergyDeposited(fastTrack.GetPrimaryTrack()->GetKineticEnergy()); |
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94 | |
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95 | // split into "energy spots" energy according to the shower shape: |
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96 | Explode(fastTrack); |
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97 | |
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98 | // and put those energy spots into the crystals: |
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99 | BuildDetectorResponse(); |
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100 | } |
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101 | |
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102 | void ExN05PionShowerModel::Explode(const G4FastTrack& fastTrack) |
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103 | { |
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104 | //----------------------------------------------------- |
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105 | // Non-physical shower generated: exp along z and |
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106 | // transverse. |
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107 | //----------------------------------------------------- |
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108 | |
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109 | // center of the shower, we put at the middle of the ghost: |
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110 | G4ThreeVector showerCenter; |
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111 | G4double distOut; |
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112 | distOut = fastTrack.GetEnvelopeSolid()-> |
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113 | DistanceToOut(fastTrack.GetPrimaryTrackLocalPosition(), |
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114 | fastTrack.GetPrimaryTrackLocalDirection()); |
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115 | showerCenter = fastTrack.GetPrimaryTrackLocalPosition() + |
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116 | (distOut/2.)*fastTrack.GetPrimaryTrackLocalDirection(); |
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117 | |
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118 | showerCenter = fastTrack.GetInverseAffineTransformation()-> |
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119 | TransformPoint(showerCenter); |
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120 | |
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121 | // axis of the shower, in global reference frame: |
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122 | G4ThreeVector xShower, yShower, zShower; |
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123 | zShower = fastTrack.GetPrimaryTrack()->GetMomentumDirection(); |
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124 | xShower = zShower.orthogonal(); |
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125 | yShower = zShower.cross(xShower); |
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126 | |
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127 | // shoot the energy spots: |
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128 | G4double Energy = fastTrack.GetPrimaryTrack()->GetKineticEnergy(); |
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129 | G4int nSpot = 50; |
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130 | G4double deposit = Energy/double(nSpot); |
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131 | ExN05EnergySpot eSpot; |
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132 | eSpot.SetEnergy(deposit); |
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133 | G4ThreeVector ePoint; |
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134 | |
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135 | // clear the spot list before use |
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136 | feSpotList.clear(); |
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137 | |
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138 | G4double z, r, phi; |
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139 | for (int i = 0; i < nSpot; i++) |
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140 | { |
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141 | z = G4RandGauss::shoot(0,20*cm); |
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142 | r = G4RandGauss::shoot(0,10*cm); |
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143 | phi = G4UniformRand()*twopi; |
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144 | ePoint = showerCenter + |
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145 | z*zShower + |
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146 | r*std::cos(phi)*xShower + r*std::sin(phi)*yShower; |
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147 | eSpot.SetPosition(ePoint); |
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148 | feSpotList.push_back(eSpot); |
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149 | } |
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150 | } |
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151 | |
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152 | |
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153 | void ExN05PionShowerModel::BuildDetectorResponse() |
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154 | { |
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155 | // Does the assignation of the energy spots to the sensitive volumes: |
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156 | for (size_t i = 0; i < feSpotList.size(); i++) |
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157 | { |
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158 | // Draw the energy spot: |
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159 | G4Colour red(1.,0.,0.); |
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160 | feSpotList[i].Draw(&red); |
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161 | // feSpotList[i].Print(); |
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162 | |
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163 | // "converts" the energy spot into the fake |
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164 | // G4Step to pass to sensitive detector: |
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165 | AssignSpotAndCallHit(feSpotList[i]); |
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166 | } |
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167 | } |
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168 | |
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169 | |
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170 | void ExN05PionShowerModel::AssignSpotAndCallHit(const ExN05EnergySpot &eSpot) |
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171 | { |
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172 | // |
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173 | // "converts" the energy spot into the fake |
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174 | // G4Step to pass to sensitive detector: |
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175 | // |
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176 | FillFakeStep(eSpot); |
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177 | |
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178 | // |
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179 | // call sensitive part: taken/adapted from the stepping: |
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180 | // Send G4Step information to Hit/Dig if the volume is sensitive |
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181 | // |
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182 | G4VPhysicalVolume* pCurrentVolume = |
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183 | fFakeStep->GetPreStepPoint()->GetPhysicalVolume(); |
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184 | G4VSensitiveDetector* pSensitive; |
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185 | |
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186 | if( pCurrentVolume != 0 ) |
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187 | { |
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188 | pSensitive = pCurrentVolume->GetLogicalVolume()-> |
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189 | GetSensitiveDetector(); |
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190 | if( pSensitive != 0 ) |
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191 | { |
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192 | pSensitive->Hit(fFakeStep); |
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193 | } |
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194 | } |
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195 | } |
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196 | |
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197 | |
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198 | void ExN05PionShowerModel::FillFakeStep(const ExN05EnergySpot &eSpot) |
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199 | { |
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200 | //----------------------------------------------------------- |
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201 | // find in which volume the spot is. |
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202 | //----------------------------------------------------------- |
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203 | if (!fNaviSetup) |
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204 | { |
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205 | fpNavigator-> |
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206 | SetWorldVolume(G4TransportationManager::GetTransportationManager()-> |
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207 | GetNavigatorForTracking()->GetWorldVolume()); |
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208 | fpNavigator-> |
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209 | LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(), |
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210 | G4ThreeVector(0.,0.,0.), |
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211 | fTouchableHandle, |
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212 | false); |
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213 | fNaviSetup = true; |
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214 | } |
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215 | else |
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216 | { |
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217 | fpNavigator-> |
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218 | LocateGlobalPointAndUpdateTouchableHandle(eSpot.GetPosition(), |
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219 | G4ThreeVector(0.,0.,0.), |
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220 | fTouchableHandle); |
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221 | } |
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222 | //-------------------------------------- |
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223 | // Fills attribute of the G4Step needed |
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224 | // by our sensitive detector: |
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225 | //------------------------------------- |
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226 | // set touchable volume at PreStepPoint: |
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227 | fFakePreStepPoint->SetTouchableHandle(fTouchableHandle); |
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228 | // set total energy deposit: |
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229 | fFakeStep->SetTotalEnergyDeposit(eSpot.GetEnergy()); |
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230 | } |
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