B5HadCalorimeterSD.cc

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// $Id: B5HadCalorimeterSD.cc 76474 2013-11-11 10:36:34Z gcosmo $
//

#include "B5HadCalorimeterSD.hh"
#include "B5HadCalorimeterHit.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(0), 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 (G4int iColumn=0;iColumn<10;iColumn++)
        for (G4int iRow=0;iRow<2;iRow++)
        {
            B5HadCalorimeterHit* hit = new B5HadCalorimeterHit();
            fHitsCollection->insert(hit);
        }
}

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G4bool B5HadCalorimeterSD::ProcessHits(G4Step* step, G4TouchableHistory*)
{
    G4double edep = step->GetTotalEnergyDeposit();
    if (edep==0.) return true;
    
    G4TouchableHistory* touchable
      = (G4TouchableHistory*)(step->GetPreStepPoint()->GetTouchable());

    G4VPhysicalVolume* cellPhysical = touchable->GetVolume(2);
    G4int rowNo = cellPhysical->GetCopyNo();

    G4VPhysicalVolume* columnPhysical = touchable->GetVolume(3);
    G4int columnNo = columnPhysical->GetCopyNo();

    G4int hitID = 2*columnNo+rowNo;
    B5HadCalorimeterHit* hit = (*fHitsCollection)[hitID];
    
    // check if it is first touch
    if (hit->GetColumnID()<0)
    {
        hit->SetColumnID(columnNo);
        hit->SetRowID(rowNo);
        G4int depth = touchable->GetHistory()->GetDepth();
        G4AffineTransform 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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