LXePMTSD.cc

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/// \file optical/LXe/src/LXePMTSD.cc
/// \brief Implementation of the LXePMTSD class
//
//
#include "LXePMTSD.hh"
 
#include "LXeDetectorConstruction.hh"
#include "LXePMTHit.hh"
#include "LXeUserTrackInformation.hh"
 
#include "G4ios.hh"
#include "G4LogicalVolume.hh"
#include "G4ParticleDefinition.hh"
#include "G4ParticleTypes.hh"
#include "G4SDManager.hh"
#include "G4Step.hh"
#include "G4TouchableHistory.hh"
#include "G4Track.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VTouchable.hh"
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
LXePMTSD::LXePMTSD(G4String name)
  : G4VSensitiveDetector(name)
{
  collectionName.insert("pmtHitCollection");
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
LXePMTSD::~LXePMTSD()
{
  delete fPMTPositionsX;
  delete fPMTPositionsY;
  delete fPMTPositionsZ;
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void LXePMTSD::SetPmtPositions(const std::vector<G4ThreeVector>& positions)
{
  for(size_t i = 0; i < positions.size(); ++i)
  {
    if(fPMTPositionsX)
      fPMTPositionsX->push_back(positions[i].x());
    if(fPMTPositionsY)
      fPMTPositionsY->push_back(positions[i].y());
    if(fPMTPositionsZ)
      fPMTPositionsZ->push_back(positions[i].z());
  }
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void LXePMTSD::Initialize(G4HCofThisEvent* hitsCE)
{
  fPMTHitCollection =
    new LXePMTHitsCollection(SensitiveDetectorName, collectionName[0]);
 
  if(fHitCID < 0)
  {
    fHitCID = G4SDManager::GetSDMpointer()->GetCollectionID(fPMTHitCollection);
  }
  hitsCE->AddHitsCollection(fHitCID, fPMTHitCollection);
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
G4bool LXePMTSD::ProcessHits(G4Step*, G4TouchableHistory*) { return false; }
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
// Generates a hit and uses the postStepPoint's mother volume replica number
// PostStepPoint because the hit is generated manually when the photon is
// absorbed by the photocathode
 
G4bool LXePMTSD::ProcessHits_boundary(const G4Step* aStep, G4TouchableHistory*)
{
  // need to know if this is an optical photon
  if(aStep->GetTrack()->GetDefinition() !=
     G4OpticalPhoton::OpticalPhotonDefinition())
    return false;
 
  // User replica number 1 since photocathode is a daughter volume
  // to the pmt which was replicated
  G4int pmtNumber =
    aStep->GetPostStepPoint()->GetTouchable()->GetReplicaNumber(1);
  G4VPhysicalVolume* physVol =
    aStep->GetPostStepPoint()->GetTouchable()->GetVolume(1);
 
  // Find the correct hit collection
  size_t n       = fPMTHitCollection->entries();
  LXePMTHit* hit = nullptr;
  for(size_t i = 0; i < n; ++i)
  {
    if((*fPMTHitCollection)[i]->GetPMTNumber() == pmtNumber)
    {
      hit = (*fPMTHitCollection)[i];
      break;
    }
  }
 
  if(hit == nullptr)
  {                         // this pmt wasn't previously hit in this event
    hit = new LXePMTHit();  // so create new hit
    hit->SetPMTNumber(pmtNumber);
    hit->SetPMTPhysVol(physVol);
    fPMTHitCollection->insert(hit);
    hit->SetPMTPos((*fPMTPositionsX)[pmtNumber], (*fPMTPositionsY)[pmtNumber],
                   (*fPMTPositionsZ)[pmtNumber]);
  }
 
  hit->IncPhotonCount();  // increment hit for the selected pmt
 
  if(!LXeDetectorConstruction::GetSphereOn())
  {
    hit->SetDrawit(true);
    // If the sphere is disabled then this hit is automaticaly drawn
  }
  else
  {  // sphere enabled
    auto trackInfo =
      (LXeUserTrackInformation*) aStep->GetTrack()->GetUserInformation();
    if(trackInfo->GetTrackStatus() & hitSphere)
      // only draw this hit if the photon has hit the sphere first
      hit->SetDrawit(true);
  }
 
  return true;
}