wls/src/WLSPhotonDetSD.cc

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0025 //
0026 /// \file WLSPhotonDetSD.cc
0027 /// \brief Implementation of the WLSPhotonDetSD class
0028
0029 #include "WLSPhotonDetSD.hh"
0030
0031 #include "WLSPhotonDetHit.hh"
0032 #include "WLSUserTrackInformation.hh"
0033
0034 #include "G4OpticalPhoton.hh"
0035 #include "G4SDManager.hh"
0036 #include "G4Step.hh"
0037 #include "G4ThreeVector.hh"
0038 #include "G4TouchableHistory.hh"
0039 #include "G4Track.hh"
0040 #include "G4VTouchable.hh"
0041
0042 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0043
0044 WLSPhotonDetSD::WLSPhotonDetSD(G4String name) : G4VSensitiveDetector(name)
0045 {
0046   collectionName.insert("PhotonDetHitCollection");
0047 }
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 void WLSPhotonDetSD::Initialize(G4HCofThisEvent* HCE)
0052 {
0053   fPhotonDetHitCollection =
0054     new WLSPhotonDetHitsCollection(SensitiveDetectorName, collectionName[0]);
0055
0056   if (fHCID < 0) {
0057     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fPhotonDetHitCollection);
0058   }
0059   HCE->AddHitsCollection(fHCID, fPhotonDetHitCollection);
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0063
0064 G4bool WLSPhotonDetSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
0065 {
0066   if (!aStep) return false;
0067   G4Track* theTrack = aStep->GetTrack();
0068
0069   // Need to know if this is an optical photon
0070   if (theTrack->GetDefinition() != G4OpticalPhoton::OpticalPhotonDefinition()) {
0071     return false;
0072   }
0073
0074   // Find out information regarding the hit
0075   G4StepPoint* thePostPoint = aStep->GetPostStepPoint();
0076
0077   auto trackInformation = (WLSUserTrackInformation*)theTrack->GetUserInformation();
0078
0079   auto theTouchable = (G4TouchableHistory*)(thePostPoint->GetTouchable());
0080
0081   G4ThreeVector photonExit = trackInformation->GetExitPosition();
0082   G4ThreeVector photonArrive = thePostPoint->GetPosition();
0083   G4double arrivalTime = theTrack->GetGlobalTime();
0084   G4double energy = theTrack->GetTotalEnergy();
0085
0086   // Convert the global coordinate for arriving photons into
0087   // the local coordinate of the detector
0088   photonArrive = theTouchable->GetHistory()->GetTopTransform().TransformPoint(photonArrive);
0089
0090   // Creating the hit and add it to the collection
0091   fPhotonDetHitCollection->insert(
0092     new WLSPhotonDetHit(photonExit, photonArrive, arrivalTime, energy));
0093
0094   return true;
0095 }
0096
0097 void WLSPhotonDetSD::EndOfEvent(G4HCofThisEvent*)
0098 {
0099   if (verboseLevel > 1) {
0100     G4int nofHits = fPhotonDetHitCollection->entries();
0101     G4cout << G4endl << "-------->Hits Collection: in this event there are " << nofHits
0102            << " hits in the photon detector: " << G4endl;
0103     for (G4int i = 0; i < nofHits; i++)
0104       (*fPhotonDetHitCollection)[i]->Print();
0105   }
0106 }