B5/src/DriftChamberSD.cc

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0026 //
0027 /// \file B5/src/DriftChamberSD.cc
0028 /// \brief Implementation of the B5::DriftChamber class
0029
0030 #include "DriftChamberSD.hh"
0031
0032 #include "DriftChamberHit.hh"
0033
0034 #include "G4HCofThisEvent.hh"
0035 #include "G4SDManager.hh"
0036 #include "G4Step.hh"
0037 #include "G4Track.hh"
0038
0039 namespace B5
0040 {
0041
0042 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0043
0044 DriftChamberSD::DriftChamberSD(G4String name) : G4VSensitiveDetector(name)
0045 {
0046   collectionName.insert("driftChamberColl");
0047 }
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 void DriftChamberSD::Initialize(G4HCofThisEvent* hce)
0052 {
0053   fHitsCollection = new DriftChamberHitsCollection(SensitiveDetectorName, collectionName[0]);
0054
0055   if (fHCID < 0) {
0056     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection);
0057   }
0058   hce->AddHitsCollection(fHCID, fHitsCollection);
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 G4bool DriftChamberSD::ProcessHits(G4Step* step, G4TouchableHistory*)
0064 {
0065   auto charge = step->GetTrack()->GetDefinition()->GetPDGCharge();
0066   if (charge == 0.) return true;
0067
0068   auto preStepPoint = step->GetPreStepPoint();
0069
0070   auto touchable = step->GetPreStepPoint()->GetTouchable();
0071   auto motherPhysical = touchable->GetVolume(1);  // mother
0072   auto copyNo = motherPhysical->GetCopyNo();
0073
0074   auto worldPos = preStepPoint->GetPosition();
0075   auto localPos = touchable->GetHistory()->GetTopTransform().TransformPoint(worldPos);
0076
0077   auto hit = new DriftChamberHit(copyNo);
0078   hit->SetWorldPos(worldPos);
0079   hit->SetLocalPos(localPos);
0080   hit->SetTime(preStepPoint->GetGlobalTime());
0081
0082   fHitsCollection->insert(hit);
0083
0084   return true;
0085 }
0086
0087 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0088
0089 }  // namespace B5