Par03EventAction Class Reference

Event action class for hits' analysis. More...

#include <Doxymodules_parameterisations.h>

Inheritance diagram for Par03EventAction:

Public Member Functions
	Par03EventAction (Par03DetectorConstruction *aDetector)
virtual	~Par03EventAction ()
virtual void	BeginOfEventAction (const G4Event *aEvent) final
	Timer is started.
virtual void	EndOfEventAction (const G4Event *aEvent) final
	Hits collection is retrieved, analysed, and histograms are filled.

Private Attributes
G4int	fHitCollectionID
	ID of a hit collection to analyse.
G4Timer	fTimer
	Timer measurement.
Par03DetectorConstruction *	fDetector
	Pointer to detector construction to retrieve (once) the detector dimensions.
G4double	fCellSizeZ = 0
	Size of cell along Z axis.
G4double	fCellSizeRho = 0
	Size of cell along radius of cylinder.

Detailed Description

Event action class for hits' analysis.

Analysis of single-particle events and developed showers in the detector. At the end of the event basic variables are calculated and saved in the histograms.

Definition at line 64 of file Doxymodules_parameterisations.h.

Constructor & Destructor Documentation

Par03EventAction()

Par03EventAction::Par03EventAction

(

Par03DetectorConstruction *

aDetector

)

Definition at line 36 of file Par03EventAction.cc.

  : G4UserEventAction()
  , fHitCollectionID(-1)
  , fTimer()
  , fDetector(aDetector)
{}

~Par03EventAction()

Par03EventAction::~Par03EventAction ( )

virtualdefault

Member Function Documentation

BeginOfEventAction()

void Par03EventAction::BeginOfEventAction ( const G4Event *  aEvent )

finalvirtual

Timer is started.

Definition at line 49 of file Par03EventAction.cc.

{ fTimer.Start(); }

EndOfEventAction()

void Par03EventAction::EndOfEventAction ( const G4Event *  aEvent )

finalvirtual

Hits collection is retrieved, analysed, and histograms are filled.

Definition at line 53 of file Par03EventAction.cc.

{
  fTimer.Stop();
  // Get hits collection ID (only once)
  if(fHitCollectionID == -1)
  {
    fHitCollectionID = G4SDManager::GetSDMpointer()->GetCollectionID("hits");
  }
  // Get hits collection
  auto hitsCollection = static_cast<Par03HitsCollection*>(
    aEvent->GetHCofThisEvent()->GetHC(fHitCollectionID));
 
  if(hitsCollection == nullptr)
  {
    G4ExceptionDescription msg;
    msg << "Cannot access hitsCollection ID " << fHitCollectionID;
    G4Exception("Par03EventAction::GetHitsCollection()", "MyCode0001",
                FatalException, msg);
  }
  // Get analysis manager
  auto analysisManager = G4AnalysisManager::Instance();
  // Retrieve only once detector dimensions
  if(fCellSizeZ == 0)
  {
    fCellSizeZ   = fDetector->GetLength() / fDetector->GetNbOfLayers();
    fCellSizeRho = fDetector->GetRadius() / fDetector->GetNbOfRhoCells();
  }
 
  // Retrieve information from primary vertex and primary particle
  // To calculate shower axis and entry point to the detector
  auto primaryVertex = G4EventManager::GetEventManager()
                         ->GetConstCurrentEvent()
                         ->GetPrimaryVertex();
  auto primaryParticle   = primaryVertex->GetPrimary(0);
  G4double primaryEnergy = primaryParticle->GetTotalEnergy();
  // Estimate from vertex and particle direction the entry point to the detector
  // Calculate entrance point to the detector located at z = 0
  auto primaryDirection = primaryParticle->GetMomentumDirection();
  auto primaryEntrance  = primaryVertex->GetPosition() -
                         primaryVertex->GetPosition().z() * primaryDirection;
  G4double cosDirection = std::cos(primaryDirection.theta());
  G4double sinDirection = std::sin(primaryDirection.theta());
 
  // Fill histograms
  Par03Hit* hit        = nullptr;
  G4double hitEn       = 0;
  G4double totalEnergy = 0;
  G4int hitZ           = -1;
  G4int hitRho         = -1;
  G4int hitType        = -1;
  G4double tDistance = 0., rDistance = 0.;
  G4double tFirstMoment = 0., tSecondMoment = 0.;
  G4double rFirstMoment = 0., rSecondMoment = 0.;
  for(size_t iHit = 0; iHit < hitsCollection->entries(); iHit++)
  {
    hit     = static_cast<Par03Hit*>(hitsCollection->GetHit(iHit));
    hitZ    = hit->GetZid();
    hitRho  = hit->GetRhoId();
    hitEn   = hit->GetEdep();
    hitType = hit->GetType();
    if(hitEn > 0)
    {
      totalEnergy += hitEn;
      tDistance =
        hitZ * fCellSizeZ * cosDirection +
        (hitRho * fCellSizeRho - primaryEntrance.perp()) * sinDirection;
      rDistance =
        hitZ * fCellSizeZ * (-sinDirection) +
        (hitRho * fCellSizeRho - primaryEntrance.perp()) * cosDirection;
      tFirstMoment += hitEn * tDistance;
      rFirstMoment += hitEn * rDistance;
      analysisManager->FillH1(4, tDistance, hitEn);
      analysisManager->FillH1(5, rDistance, hitEn);
      analysisManager->FillH1(10, hitType);
    }
  }
  tFirstMoment /= totalEnergy;
  rFirstMoment /= totalEnergy;
  analysisManager->FillH1(0, primaryEnergy / GeV);
  analysisManager->FillH1(1, totalEnergy / GeV);
  analysisManager->FillH1(2, totalEnergy / primaryEnergy);
  analysisManager->FillH1(3, fTimer.GetRealElapsed());
  analysisManager->FillH1(6, tFirstMoment);
  analysisManager->FillH1(7, rFirstMoment);
 
  // Second loop over hits to calculate second moments
  for(size_t iHit = 0; iHit < hitsCollection->entries(); iHit++)
  {
    hit    = static_cast<Par03Hit*>(hitsCollection->GetHit(iHit));
    hitEn  = hit->GetEdep();
    hitZ   = hit->GetZid();
    hitRho = hit->GetRhoId();
    if(hitEn > 0)
    {
      tDistance = hitZ * fCellSizeZ * cosDirection +
                  (hitRho * fCellSizeRho - primaryEntrance.r()) * sinDirection;
      rDistance = hitZ * fCellSizeZ * (-sinDirection) +
                  (hitRho * fCellSizeRho - primaryEntrance.r()) * cosDirection;
      tSecondMoment += hitEn * std::pow(tDistance - tFirstMoment, 2);
      rSecondMoment += hitEn * std::pow(rDistance - rFirstMoment, 2);
    }
  }
  tSecondMoment /= totalEnergy;
  rSecondMoment /= totalEnergy;
  analysisManager->FillH1(8, tSecondMoment);
  analysisManager->FillH1(9, rSecondMoment);
}

Member Data Documentation

fHitCollectionID

G4int Par03EventAction::fHitCollectionID

private

ID of a hit collection to analyse.

Definition at line 56 of file Par03EventAction.hh.

fTimer

G4Timer Par03EventAction::fTimer

private

Timer measurement.

Definition at line 58 of file Par03EventAction.hh.

fDetector

Par03DetectorConstruction* Par03EventAction::fDetector

private

Pointer to detector construction to retrieve (once) the detector dimensions.

Definition at line 61 of file Par03EventAction.hh.

fCellSizeZ

G4double Par03EventAction::fCellSizeZ = 0

private

Size of cell along Z axis.

Definition at line 63 of file Par03EventAction.hh.

fCellSizeRho

G4double Par03EventAction::fCellSizeRho = 0

private

Size of cell along radius of cylinder.

Definition at line 65 of file Par03EventAction.hh.

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

• .doxygen/Doxymodules_parameterisations.h
• extended/parameterisations/Par03/include/Par03EventAction.hh
• extended/parameterisations/Par03/src/Par03EventAction.cc