CaTS/src/PhotonSD.cc

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0025 //
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0027 //
0028 //  CaTS (Calorimetry and Tracking Simulation)
0029 //
0030 //  Authors : Hans Wenzel
0031 //            Soon Yung Jun
0032 //            (Fermi National Accelerator Laboratory)
0033 //
0034 // History
0035 //   October 18th, 2021 : first implementation
0036 //
0037 // ********************************************************************
0038 //
0039 /// \file PhotonSD.cc
0040 /// \brief Implementation of the CaTS::PhotonSD class
0041
0042 // Geant4 headers
0043 #include "G4VProcess.hh"
0044 #include "G4OpticalPhoton.hh"
0045 #include "G4HCofThisEvent.hh"
0046 #include "G4Step.hh"
0047 #include "G4SDManager.hh"
0048 #include "ConfigurationManager.hh"
0049 // project headers
0050 #include "PhotonSD.hh"
0051 #ifdef WITH_G4OPTICKS
0052 #  include "G4Opticks.hh"
0053 #  include "TrackInfo.hh"
0054 #  include "OpticksGenstep.h"
0055 #  include "OpticksFlags.hh"
0056 #  include "G4OpticksHit.hh"
0057 #endif
0058
0059 PhotonSD::PhotonSD(G4String name)
0060   : G4VSensitiveDetector(name)
0061 {
0062   G4String HCname = name + "_HC";
0063   collectionName.insert(HCname);
0064   G4cout << collectionName.size() << "   PhotonSD name:  " << name
0065          << " collection Name: " << HCname << G4endl;
0066   fHCID   = -1;
0067   verbose = ConfigurationManager::getInstance()->isEnable_verbose();
0068 }
0069
0070 void PhotonSD::Initialize(G4HCofThisEvent* hce)
0071 {
0072   fPhotonHitsCollection =
0073     new PhotonHitsCollection(SensitiveDetectorName, collectionName[0]);
0074   if(fHCID < 0)
0075   {
0076     if(verbose)
0077       G4cout << "PhotonSD::Initialize:  " << SensitiveDetectorName << "   "
0078              << collectionName[0] << G4endl;
0079     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
0080   }
0081   hce->AddHitsCollection(fHCID, fPhotonHitsCollection);
0082 }
0083
0084 G4bool PhotonSD::ProcessHits(G4Step* aStep, G4TouchableHistory*)
0085 {
0086   G4Track* theTrack = aStep->GetTrack();
0087   // we only deal with optical Photons:
0088   if(theTrack->GetDefinition() != G4OpticalPhoton::OpticalPhotonDefinition())
0089   {
0090     return false;
0091   }
0092   G4double theEdep              = theTrack->GetTotalEnergy() / CLHEP::eV;
0093   const G4VProcess* thisProcess = theTrack->GetCreatorProcess();
0094   G4String processname;
0095   if(thisProcess != NULL)
0096     processname = thisProcess->GetProcessName();
0097   else
0098     processname = "No Process";
0099   unsigned theCreationProcessid;
0100   if(processname == "Cerenkov")
0101   {
0102     theCreationProcessid = 0;
0103   }
0104   else if(processname == "Scintillation")
0105   {
0106     theCreationProcessid = 1;
0107   }
0108   else
0109   {
0110     theCreationProcessid = -1;
0111   }
0112   PhotonHit* newHit = new PhotonHit(
0113     0, theCreationProcessid, etolambda(theEdep), theTrack->GetGlobalTime(),
0114     aStep->GetPostStepPoint()->GetPosition(),
0115     aStep->GetPostStepPoint()->GetMomentumDirection(),
0116     aStep->GetPostStepPoint()->GetPolarization());
0117   fPhotonHitsCollection->insert(newHit);
0118   theTrack->SetTrackStatus(fStopAndKill);
0119   return true;
0120 }
0121
0122 void PhotonSD::EndOfEvent(G4HCofThisEvent*)
0123 {
0124   if(verbose)
0125   {
0126     G4int NbHits = fPhotonHitsCollection->entries();
0127     G4cout << " PhotonSD::EndOfEvent Number of PhotonHits:  " << NbHits
0128            << G4endl;
0129   }
0130 }
0131 #ifdef WITH_G4OPTICKS
0132 void PhotonSD::AddOpticksHits()
0133 {
0134   G4Opticks* g4ok   = G4Opticks::Get();
0135   bool way_enabled  = g4ok->isWayEnabled();
0136   unsigned num_hits = g4ok->getNumHit();
0137   if(verbose)
0138     G4cout << "PhotonSD::AddOpticksHits PhotonHits:  " << num_hits << G4endl;
0139   G4OpticksHit hit;
0140   G4OpticksHitExtra hit_extra;
0141   G4OpticksHitExtra* hit_extra_ptr = way_enabled ? &hit_extra : NULL;
0142   for(unsigned i = 0; i < num_hits; i++)
0143   {
0144     g4ok->getHit(i, &hit, hit_extra_ptr);
0145     PhotonHit* newHit =
0146       new PhotonHit(i, 0, hit.wavelength, hit.time, hit.global_position,
0147                     hit.global_direction, hit.global_polarization);
0148     fPhotonHitsCollection->insert(newHit);
0149   }
0150   if(verbose)
0151     G4cout << "AddOpticksHits size:  " << fPhotonHitsCollection->entries()
0152            << G4endl;
0153 }
0154 #endif