B5/src/DriftChamberSD.cc

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0025 //
0026 /// \file DriftChamberSD.cc
0027 /// \brief Implementation of the B5::DriftChamberSD class
0028
0029 #include "DriftChamberSD.hh"
0030
0031 #include "DriftChamberHit.hh"
0032
0033 #include "G4HCofThisEvent.hh"
0034 #include "G4SDManager.hh"
0035 #include "G4Step.hh"
0036 #include "G4Track.hh"
0037
0038 namespace B5
0039 {
0040
0041 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0042
0043 DriftChamberSD::DriftChamberSD(G4String name) : G4VSensitiveDetector(name)
0044 {
0045   collectionName.insert("driftChamberColl");
0046 }
0047
0048 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0049
0050 void DriftChamberSD::Initialize(G4HCofThisEvent* hce)
0051 {
0052   fHitsCollection = new DriftChamberHitsCollection(SensitiveDetectorName, collectionName[0]);
0053
0054   if (fHCID < 0) {
0055     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection);
0056   }
0057   hce->AddHitsCollection(fHCID, fHitsCollection);
0058 }
0059
0060 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0061
0062 G4bool DriftChamberSD::ProcessHits(G4Step* step, G4TouchableHistory*)
0063 {
0064   auto charge = step->GetTrack()->GetDefinition()->GetPDGCharge();
0065   if (charge == 0.) return true;
0066
0067   auto preStepPoint = step->GetPreStepPoint();
0068
0069   auto touchable = step->GetPreStepPoint()->GetTouchable();
0070   auto motherPhysical = touchable->GetVolume(1);  // mother
0071   auto copyNo = motherPhysical->GetCopyNo();
0072
0073   auto worldPos = preStepPoint->GetPosition();
0074   auto localPos = touchable->GetHistory()->GetTopTransform().TransformPoint(worldPos);
0075
0076   auto hit = new DriftChamberHit(copyNo);
0077   hit->SetWorldPos(worldPos);
0078   hit->SetLocalPos(localPos);
0079   hit->SetTime(preStepPoint->GetGlobalTime());
0080
0081   fHitsCollection->insert(hit);
0082
0083   return true;
0084 }
0085
0086 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0087
0088 }  // namespace B5