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25 //
26 //
27 /// \file optical/wls/src/WLSPhotonDetSD.cc
28 /// \brief Implementation of the WLSPhotonDetSD class
29 //
30 //
31 #include "WLSPhotonDetSD.hh"
32
33 #include "WLSPhotonDetHit.hh"
34 #include "WLSUserTrackInformation.hh"
35
36 #include "G4OpticalPhoton.hh"
37 #include "G4SDManager.hh"
38 #include "G4Step.hh"
39 #include "G4ThreeVector.hh"
40 #include "G4TouchableHistory.hh"
41 #include "G4Track.hh"
42 #include "G4VTouchable.hh"
43
44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
45
46 WLSPhotonDetSD::WLSPhotonDetSD(G4String name) : G4VSensitiveDetector(name)
47 {
48 collectionName.insert("PhotonDetHitCollection");
49 }
50
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52
53 void WLSPhotonDetSD::Initialize(G4HCofThisEvent* HCE)
54 {
55 fPhotonDetHitCollection =
56 new WLSPhotonDetHitsCollection(SensitiveDetectorName, collectionName[0]);
57
58 if (fHCID < 0) {
59 fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fPhotonDetHitCollection);
60 }
61 HCE->AddHitsCollection(fHCID, fPhotonDetHitCollection);
62 }
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65
66 G4bool WLSPhotonDetSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
67 {
68 if (!aStep) return false;
69 G4Track* theTrack = aStep->GetTrack();
70
71 // Need to know if this is an optical photon
72 if (theTrack->GetDefinition() != G4OpticalPhoton::OpticalPhotonDefinition()) {
73 return false;
74 }
75
76 // Find out information regarding the hit
77 G4StepPoint* thePostPoint = aStep->GetPostStepPoint();
78
79 auto trackInformation = (WLSUserTrackInformation*)theTrack->GetUserInformation();
80
81 auto theTouchable = (G4TouchableHistory*)(thePostPoint->GetTouchable());
82
83 G4ThreeVector photonExit = trackInformation->GetExitPosition();
84 G4ThreeVector photonArrive = thePostPoint->GetPosition();
85 G4double arrivalTime = theTrack->GetGlobalTime();
86 G4double energy = theTrack->GetTotalEnergy();
87
88 // Convert the global coordinate for arriving photons into
89 // the local coordinate of the detector
90 photonArrive = theTouchable->GetHistory()->GetTopTransform().TransformPoint(photonArrive);
91
92 // Creating the hit and add it to the collection
93 fPhotonDetHitCollection->insert(
94 new WLSPhotonDetHit(photonExit, photonArrive, arrivalTime, energy));
95
96 return true;
97 }
98
99 void WLSPhotonDetSD::EndOfEvent(G4HCofThisEvent*)
100 {
101 if (verboseLevel > 1) {
102 G4int nofHits = fPhotonDetHitCollection->entries();
103 G4cout << G4endl << "-------->Hits Collection: in this event there are " << nofHits
104 << " hits in the photon detector: " << G4endl;
105 for (G4int i = 0; i < nofHits; i++)
106 (*fPhotonDetHitCollection)[i]->Print();
107 }
108 }
109