B5HadCalorimeterSD.cc

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// $Id: B5HadCalorimeterSD.cc 101036 2016-11-04 09:00:23Z gcosmo $
//

#include "B5HadCalorimeterSD.hh"
#include "B5HadCalorimeterHit.hh"
#include "B5Constants.hh"

#include "G4HCofThisEvent.hh"
#include "G4TouchableHistory.hh"
#include "G4Track.hh"
#include "G4Step.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"

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B5HadCalorimeterSD::B5HadCalorimeterSD(G4String name)
: G4VSensitiveDetector(name), 
  fHitsCollection(nullptr), fHCID(-1)
{
  collectionName.insert("HadCalorimeterColl");
}

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B5HadCalorimeterSD::~B5HadCalorimeterSD()
{}

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void B5HadCalorimeterSD::Initialize(G4HCofThisEvent* hce)
{
  fHitsCollection 
    = new B5HadCalorimeterHitsCollection(SensitiveDetectorName,collectionName[0]);
  if (fHCID<0) { 
    fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection); 
  }
  hce->AddHitsCollection(fHCID,fHitsCollection);
  
  // fill calorimeter hits with zero energy deposition
  for (auto column=0;column<kNofHadColumns;column++) {
    for (auto row=0;row<kNofHadRows;row++) {
      fHitsCollection->insert(new B5HadCalorimeterHit());
    }
  }
}

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G4bool B5HadCalorimeterSD::ProcessHits(G4Step* step, G4TouchableHistory*)
{
  auto edep = step->GetTotalEnergyDeposit();
  if (edep==0.) return true;
  
  auto touchable = step->GetPreStepPoint()->GetTouchable(); 
  auto rowNo = touchable->GetCopyNumber(2);
  auto columnNo = touchable->GetCopyNumber(3);
  auto hitID = kNofHadRows*columnNo+rowNo;
  auto hit = (*fHitsCollection)[hitID];
  
  // check if it is first touch
  if (hit->GetColumnID()<0) {
    hit->SetColumnID(columnNo);
    hit->SetRowID(rowNo);
    auto depth = touchable->GetHistory()->GetDepth();
    auto transform = touchable->GetHistory()->GetTransform(depth-2);
    transform.Invert();
    hit->SetRot(transform.NetRotation());
    hit->SetPos(transform.NetTranslation());
  }
  // add energy deposition
  hit->AddEdep(edep);
  
  return true;
}

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