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geant4/examples/extended/polarisation/Pol01/src/SteppingAction.cc
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2016-06-09 15:58:43 +02:00

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//
// ********************************************************************
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// * *
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//
// $Id: SteppingAction.cc,v 1.1 2006/10/02 13:48:10 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
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#include "SteppingAction.hh"
#include "DetectorConstruction.hh"
#include "PrimaryGeneratorAction.hh"
#include "RunAction.hh"
#include "HistoManager.hh"
#include "G4RunManager.hh"
#include "G4PolarizationHelper.hh"
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SteppingAction::SteppingAction(DetectorConstruction* det,
PrimaryGeneratorAction* prim, RunAction* RuAct,
HistoManager* Hist)
:detector(det), primary(prim), runAction(RuAct), histoManager(Hist)
{ }
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SteppingAction::~SteppingAction()
{ }
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void SteppingAction::UserSteppingAction(const G4Step* aStep)
{
G4StepPoint* prePoint = aStep->GetPreStepPoint();
G4StepPoint* endPoint = aStep->GetPostStepPoint();
G4String procName = endPoint->GetProcessDefinedStep()->GetProcessName();
runAction->CountProcesses(procName);
if (prePoint->GetTouchableHandle()->GetVolume()==detector->GetBox() &&
endPoint->GetTouchableHandle()->GetVolume()==detector->GetWorld()) {
G4Track* aTrack = aStep->GetTrack();
G4String particleName = aTrack->GetDynamicParticle()->GetDefinition()->GetParticleName();
// G4cout<<"a "<<particleName<<" left the Box \n";
G4ThreeVector position = endPoint->GetPosition();
G4ThreeVector direction = endPoint->GetMomentumDirection();
G4double kinEnergy = endPoint->GetKineticEnergy();
G4ThreeVector beamDirection = primary->GetParticleGun()->GetParticleMomentumDirection();
G4double polZ = endPoint->GetPolarization().z();
G4double costheta=direction*beamDirection;
G4double xdir=direction*G4PolarizationHelper::GetParticleFrameX(beamDirection);
G4double ydir=direction*G4PolarizationHelper::GetParticleFrameY(beamDirection);
G4double phi=std::atan2(ydir,xdir);
histoManager->FillHistos(particleName,kinEnergy,costheta,phi,polZ);
runAction->FillData(particleName,kinEnergy,costheta,phi,polZ);
}
}
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