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 | #include "ExN04StackingAction.hh" |
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28 | #include "G4SDManager.hh" |
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29 | #include "G4RunManager.hh" |
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30 | #include "G4Event.hh" |
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31 | #include "G4HCofThisEvent.hh" |
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32 | #include "G4Track.hh" |
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33 | #include "G4TrackStatus.hh" |
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34 | #include "G4ParticleDefinition.hh" |
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35 | #include "G4ParticleTypes.hh" |
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36 | #include "ExN04StackingActionMessenger.hh" |
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37 | #include "G4ios.hh" |
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38 | |
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39 | ExN04StackingAction::ExN04StackingAction() |
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40 | : trkHits(0), muonHits(0), stage(0) |
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41 | { |
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42 | angRoI = 30.0*deg; |
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43 | reqMuon = 2; |
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44 | reqIso = 10; |
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45 | theMessenger = new ExN04StackingActionMessenger(this); |
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46 | } |
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47 | |
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48 | ExN04StackingAction::~ExN04StackingAction() |
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49 | { delete theMessenger; } |
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50 | |
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51 | G4ClassificationOfNewTrack |
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52 | ExN04StackingAction::ClassifyNewTrack(const G4Track * aTrack) |
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53 | { |
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54 | G4ClassificationOfNewTrack classification = fWaiting; |
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55 | switch(stage) |
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56 | { |
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57 | case 0: // Stage 0 : Primary muons only |
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58 | if(aTrack->GetParentID()==0) |
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59 | { |
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60 | G4ParticleDefinition * particleType = aTrack->GetDefinition(); |
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61 | if((particleType==G4MuonPlus::MuonPlusDefinition()) |
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62 | ||(particleType==G4MuonMinus::MuonMinusDefinition())) |
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63 | { classification = fUrgent; } |
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64 | } |
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65 | break; |
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66 | |
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67 | case 1: // Stage 1 : Charged primaries only |
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68 | // Suspended tracks will be sent to the waiting stack |
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69 | if(aTrack->GetParentID()!=0) { break; } |
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70 | if(aTrack->GetTrackStatus()==fSuspend) { break; } |
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71 | if(aTrack->GetDefinition()->GetPDGCharge()==0.) { break; } |
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72 | classification = fUrgent; |
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73 | break; |
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74 | |
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75 | default: // Stage 2 : Accept all primaries |
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76 | // Accept all secondaries in RoI |
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77 | // Kill secondaries outside RoI |
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78 | if(aTrack->GetParentID()==0) |
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79 | { |
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80 | classification = fUrgent; |
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81 | break; |
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82 | } |
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83 | if((angRoI<0.)||InsideRoI(aTrack,angRoI)) |
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84 | { |
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85 | classification = fUrgent; |
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86 | break; |
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87 | } |
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88 | classification = fKill; |
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89 | } |
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90 | return classification; |
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91 | } |
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92 | |
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93 | G4bool ExN04StackingAction::InsideRoI(const G4Track * aTrack,G4double ang) |
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94 | { |
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95 | if(!muonHits) |
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96 | { muonHits = (ExN04MuonHitsCollection*)GetCollection("muonCollection"); } |
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97 | if(!muonHits) |
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98 | { G4cerr << "muonCollection NOT FOUND" << G4endl; |
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99 | return true; } |
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100 | |
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101 | G4int nhits = muonHits->entries(); |
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102 | |
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103 | const G4ThreeVector trPos = aTrack->GetPosition(); |
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104 | for(G4int i=0;i<nhits;i++) |
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105 | { |
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106 | G4ThreeVector muHitPos = (*muonHits)[i]->GetPos(); |
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107 | G4double angl = muHitPos.angle(trPos); |
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108 | if(angl<ang) { return true; } |
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109 | } |
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110 | |
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111 | return false; |
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112 | } |
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113 | |
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114 | G4VHitsCollection* ExN04StackingAction::GetCollection(G4String colName) |
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115 | { |
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116 | G4SDManager* SDMan = G4SDManager::GetSDMpointer(); |
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117 | G4RunManager* runMan = G4RunManager::GetRunManager(); |
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118 | int colID = SDMan->GetCollectionID(colName); |
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119 | if(colID>=0) |
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120 | { |
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121 | const G4Event* currentEvent = runMan->GetCurrentEvent(); |
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122 | G4HCofThisEvent* HCE = currentEvent->GetHCofThisEvent(); |
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123 | return HCE->GetHC(colID); |
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124 | } |
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125 | return 0; |
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126 | } |
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127 | |
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128 | void ExN04StackingAction::NewStage() |
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129 | { |
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130 | stage++; |
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131 | G4int nhits; |
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132 | if(stage==1) |
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133 | { |
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134 | // Stage 0->1 : check if at least "reqMuon" hits on muon chamber |
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135 | // otherwise abort current event |
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136 | if(!muonHits) |
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137 | { muonHits = (ExN04MuonHitsCollection*)GetCollection("muonCollection"); } |
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138 | if(!muonHits) |
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139 | { G4cerr << "muonCollection NOT FOUND" << G4endl; |
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140 | return; } |
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141 | nhits = muonHits->entries(); |
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142 | G4cout << "Stage 0->1 : " << nhits << " hits found in the muon chamber." |
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143 | << G4endl; |
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144 | if(nhits<reqMuon) |
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145 | { |
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146 | stackManager->clear(); |
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147 | G4cout << "++++++++ event aborted" << G4endl; |
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148 | return; |
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149 | } |
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150 | stackManager->ReClassify(); |
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151 | return; |
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152 | } |
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153 | |
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154 | else if(stage==2) |
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155 | { |
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156 | // Stage 1->2 : check the isolation of muon tracks |
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157 | // at least "reqIsoMuon" isolated muons |
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158 | // otherwise abort current event. |
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159 | // Isolation requires "reqIso" or less hits |
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160 | // (including own hits) in the RoI region |
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161 | // in the tracker layers. |
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162 | nhits = muonHits->entries(); |
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163 | if(!trkHits) |
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164 | { trkHits = (ExN04TrackerHitsCollection*)GetCollection("trackerCollection"); } |
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165 | if(!trkHits) |
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166 | { G4cerr << "trackerCollection NOT FOUND" << G4endl; |
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167 | return; } |
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168 | G4int nTrkhits = trkHits->entries(); |
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169 | G4int isoMuon = 0; |
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170 | for(G4int j=0;j<nhits;j++) |
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171 | { |
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172 | G4ThreeVector hitPos = (*muonHits)[j]->GetPos(); |
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173 | G4int nhitIn = 0; |
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174 | for(G4int jj=0;(jj<nTrkhits)&&(nhitIn<=reqIso);jj++) |
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175 | { |
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176 | G4ThreeVector trkhitPos = (*trkHits)[jj]->GetPos(); |
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177 | if(trkhitPos.angle(hitPos)<angRoI) nhitIn++; |
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178 | } |
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179 | if(nhitIn<=reqIso) isoMuon++; |
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180 | } |
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181 | G4cout << "Stage 1->2 : " << isoMuon << " isolated muon found." << G4endl; |
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182 | if(isoMuon<reqIsoMuon) |
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183 | { |
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184 | stackManager->clear(); |
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185 | G4cout << "++++++++ event aborted" << G4endl; |
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186 | return; |
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187 | } |
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188 | stackManager->ReClassify(); |
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189 | return; |
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190 | } |
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191 | |
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192 | else |
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193 | { |
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194 | // Other stage change : just re-classify |
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195 | stackManager->ReClassify(); |
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196 | } |
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197 | } |
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198 | |
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199 | void ExN04StackingAction::PrepareNewEvent() |
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200 | { |
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201 | stage = 0; |
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202 | trkHits = 0; |
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203 | muonHits = 0; |
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204 | } |
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205 | |
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206 | |
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