AWESOMESensitiveDetector Class Reference

Sensitive Detector implementation of the AWESOME detector. More...

#include <AWESOMESensitiveDetector.h>

Inheritance diagram for AWESOMESensitiveDetector:

Collaboration diagram for AWESOMESensitiveDetector:

Public Member Functions
	AWESOMESensitiveDetector ()
	Constructor.
bool	step (G4Step *step, G4TouchableHistory *) override
	Step processing method.

Private Attributes
StoreArray< MCParticle >	m_MCParticles
	MC particles.
StoreArray< AWESOMESimHit >	m_SimHits
	AWESOME simulated hits.
RelationArray	m_MCParticlesToSimHits {m_MCParticles, m_SimHits}
	Relation array between MCParticles and AWESOMESimHits.

Detailed Description

Sensitive Detector implementation of the AWESOME detector.

Definition at line 27 of file AWESOMESensitiveDetector.h.

Constructor & Destructor Documentation

AWESOMESensitiveDetector()

AWESOMESensitiveDetector

(

)

Constructor.

Definition at line 27 of file AWESOMESensitiveDetector.cc.

                                                   :
  Simulation::SensitiveDetectorBase{"AwesomeSensitiveDetector", Const::EDetector::TEST}
{
  /* MCParticles must be optional, not required. */
  m_MCParticles.isOptional();
  /* Register the simulted hits and all the necessary relations in the datastore. */
  m_SimHits.registerInDataStore();
  m_MCParticles.registerRelationTo(m_SimHits);
  /*
   * Register the Relation so that the Geant4 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(m_MCParticlesToSimHits);
}

Member Function Documentation

step()

bool step ( G4Step *  step, G4TouchableHistory *    )

override

Step processing method.

Parameters

step	The G4Step with the current step information.

Returns

true if a hit was created, false otherwise.

Definition at line 44 of file AWESOMESensitiveDetector.cc.

{
  /* Get some basic information from Geant4. */
  const G4Track& track   = *step->GetTrack();
  const int trackID      = track.GetTrackID();
  const double energyDep = step->GetTotalEnergyDeposit() * Unit::MeV;
  G4StepPoint* preStep   = step->GetPreStepPoint();
  G4StepPoint* postStep  = step->GetPostStepPoint();
  /* Ignore everything below 1 eV. */
  if (energyDep < Unit::eV)
    return false;
  /*
   * Compute other useful quantities to be stored.
   * We must be sure that the quantities are stored using the proper Belle2 units:
   * positions in cm, time in ns, etc.
   */
  const CLHEP::Hep3Vector position = 0.5 * (preStep->GetPosition() + postStep->GetPosition()) / CLHEP::cm; // Now in cm
  const double time = 0.5 * (preStep->GetGlobalTime() + postStep->GetGlobalTime()); // Already in ns
  /* Store the simulated hit. */
  AWESOMESimHit* simHit = m_SimHits.appendNew();
  simHit->setEnergyDep(energyDep);
  simHit->setPosition(B2Vector3{position.x(), position.y(), position.z()});
  simHit->setTime(time);
  /*
   * Add a relation between the current MCParticle and the simulated hit.
   * Since the MCParticle index is not yet defined we use the trackID from Geant4.
   */
  m_MCParticlesToSimHits.add(trackID, simHit->getArrayIndex());
  return true;
}

Member Data Documentation

m_MCParticles

StoreArray<MCParticle> m_MCParticles

private

MC particles.

Definition at line 44 of file AWESOMESensitiveDetector.h.

m_MCParticlesToSimHits

RelationArray m_MCParticlesToSimHits {m_MCParticles, m_SimHits}

private

Relation array between MCParticles and AWESOMESimHits.

Definition at line 50 of file AWESOMESensitiveDetector.h.

m_SimHits

StoreArray<AWESOMESimHit> m_SimHits

private

AWESOME simulated hits.

Definition at line 47 of file AWESOMESensitiveDetector.h.

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The documentation for this class was generated from the following files:

• online_book/awesome/simulation/include/AWESOMESensitiveDetector.h
• online_book/awesome/simulation/src/AWESOMESensitiveDetector.cc