SensitiveDetector.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
 
#include <beast/cave/simulation/SensitiveDetector.h>
#include <beast/cave/dataobjects/CaveSimHit.h>
 
#include <framework/datastore/StoreArray.h>
#include <framework/datastore/RelationArray.h>
 
#include <G4Track.hh>
#include <G4Step.hh>
 
namespace Belle2 {
  namespace cave {
 
    SensitiveDetector::SensitiveDetector():
      Simulation::SensitiveDetectorBase("CaveSensitiveDetector", Const::invalidDetector)
    {
      //Make sure all collections are registered
      StoreArray<MCParticle>   mcParticles;
      StoreArray<CaveSimHit>  simHits;
      RelationArray relMCSimHit(mcParticles, simHits);
 
      //Register all collections we want to modify and require those we want to use
      mcParticles.registerInDataStore();
      simHits.registerInDataStore();
      relMCSimHit.registerInDataStore();
 
      //Register the Relation so that the TrackIDs get replaced by the actual
      //MCParticle indices after simulating the events. This is needed as
      //secondary particles might not be stored so everything relating to those
      //particles will be attributed to the last saved mother particle
      registerMCParticleRelation(relMCSimHit);
    }
 
    bool SensitiveDetector::step(G4Step* step, G4TouchableHistory*)
    {
      //Get Track information
      const G4Track& track    = *step->GetTrack();
      const int trackID       = track.GetTrackID();
      const double depEnergy  = step->GetTotalEnergyDeposit() * CLHEP::MeV;
      //const int detNb = step->GetTrack()->GetVolume()->GetCopyNo();
 
      //Ignore everything below 1eV
      if (depEnergy < CLHEP::eV) return false;
 
 
 
      //Get the datastore arrays
      StoreArray<MCParticle>  mcParticles;
      StoreArray<CaveSimHit> simHits;
      RelationArray relMCSimHit(mcParticles, simHits);
 
      const int hitIndex = simHits.getEntries();
      StoreArray<CaveSimHit> CaveHits;
      /*CaveSimHit* hit = CaveHits.appendNew(
                          depEnergy,
                          detNb
        );*/
 
      //Add Relation between SimHit and MCParticle with a weight of 1. Since
      //the MCParticle index is not yet defined we use the trackID from Geant4
      relMCSimHit.add(trackID, hitIndex, 1.0);
 
      return true;
    }
 
  } //cave namespace
} //Belle2 namespace