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geant4/examples/extended/medical/fanoCavity/src/StackingAction.cc
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//
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//
/// \file medical/fanoCavity/src/StackingAction.cc
/// \brief Implementation of the StackingAction class
//
//
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#include "StackingAction.hh"
#include "DetectorConstruction.hh"
#include "RunAction.hh"
#include "HistoManager.hh"
#include "G4RunManager.hh"
#include "StackingMessenger.hh"
#include "Run.hh"
#include "G4Track.hh"
#include "G4EmCalculator.hh"
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StackingAction::StackingAction(DetectorConstruction* det)
:fDetector(det),fStackMessenger(0)
{
fMatWall = 0;
fZcav = 0.;
fEmCal = 0;
first = true;
fKillTrack = true;
//create a messenger for this class
fStackMessenger = new StackingMessenger(this);
}
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StackingAction::~StackingAction()
{
delete fEmCal;
delete fStackMessenger;
}
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G4ClassificationOfNewTrack
StackingAction::ClassifyNewTrack(const G4Track* track)
{
//get fDetector informations
if (first) {
fMatWall = fDetector->GetWallMaterial();
fZcav = 0.5*(fDetector->GetCavityThickness());
fEmCal = new G4EmCalculator();
first = false;
}
G4ClassificationOfNewTrack status = fUrgent;
//keep primary particle or neutral
//
G4ParticleDefinition* particle = track->GetDefinition();
G4bool neutral = (particle->GetPDGCharge() == 0.);
if ((track->GetParentID() == 0) || neutral) return status;
Run* run = static_cast<Run*>(
G4RunManager::GetRunManager()->GetNonConstCurrentRun());
//energy spectrum of charged secondaries
//
G4double energy = track->GetKineticEnergy();
run->SumEsecond(energy);
// kill e- which cannot reach Cavity
//
G4double position = (track->GetPosition()).z();
G4double safe = std::abs(position) - fZcav;
G4double range = fEmCal->GetRangeFromRestricteDEDX(energy,particle,fMatWall);
if (fKillTrack) {
if (range < 0.8*safe) status = fKill;
}
//histograms
//
G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
analysisManager->FillH1(1,position);
analysisManager->FillH1(2,energy);
G4ThreeVector direction = track->GetMomentumDirection();
analysisManager->FillH1(3,std::acos(direction.z()));
return status;
}
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