CalorimeterSD.cc

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/// \file B4/B4c/src/CalorimeterSD.cc
/// \brief Implementation of the B4c::CalorimeterSD class
 
#include "CalorimeterSD.hh"
#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4ThreeVector.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"
 
namespace B4c
{
 
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CalorimeterSD::CalorimeterSD(const G4String& name,
                             const G4String& hitsCollectionName,
                             G4int nofCells)
 : G4VSensitiveDetector(name),
   fNofCells(nofCells)
{
  collectionName.insert(hitsCollectionName);
}
 
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void CalorimeterSD::Initialize(G4HCofThisEvent* hce)
{
  // Create hits collection
  fHitsCollection
    = new CalorHitsCollection(SensitiveDetectorName, collectionName[0]);
 
  // Add this collection in hce
  auto hcID
    = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
  hce->AddHitsCollection( hcID, fHitsCollection );
 
  // Create hits
  // fNofCells for cells + one more for total sums
  for (G4int i=0; i<fNofCells+1; i++ ) {
    fHitsCollection->insert(new CalorHit());
  }
}
 
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G4bool CalorimeterSD::ProcessHits(G4Step* step,
                                     G4TouchableHistory*)
{
  // energy deposit
  auto edep = step->GetTotalEnergyDeposit();
 
  // step length
  G4double stepLength = 0.;
  if ( step->GetTrack()->GetDefinition()->GetPDGCharge() != 0. ) {
    stepLength = step->GetStepLength();
  }
 
  if ( edep==0. && stepLength == 0. ) return false;
 
  auto touchable = (step->GetPreStepPoint()->GetTouchable());
 
  // Get calorimeter cell id
  auto layerNumber = touchable->GetReplicaNumber(1);
 
  // Get hit accounting data for this cell
  auto hit = (*fHitsCollection)[layerNumber];
  if ( ! hit ) {
    G4ExceptionDescription msg;
    msg << "Cannot access hit " << layerNumber;
    G4Exception("CalorimeterSD::ProcessHits()",
      "MyCode0004", FatalException, msg);
  }
 
  // Get hit for total accounting
  auto hitTotal
    = (*fHitsCollection)[fHitsCollection->entries()-1];
 
  // Add values
  hit->Add(edep, stepLength);
  hitTotal->Add(edep, stepLength);
 
  return true;
}
 
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void CalorimeterSD::EndOfEvent(G4HCofThisEvent*)
{
  if ( verboseLevel>1 ) {
     auto nofHits = fHitsCollection->entries();
     G4cout
       << G4endl
       << "-------->Hits Collection: in this event they are " << nofHits
       << " hits in the tracker chambers: " << G4endl;
     for ( std::size_t i=0; i<nofHits; ++i ) (*fHitsCollection)[i]->Print();
  }
}
 
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}