HadrontherapyStepMax.cc

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// Hadrontherapy advanced example for Geant4
// See more at: https://twiki.cern.ch/twiki/bin/view/Geant4/AdvancedExamplesHadrontherapy

#include "HadrontherapyStepMax.hh"
#include "HadrontherapyStepMaxMessenger.hh"

HadrontherapyStepMax::HadrontherapyStepMax(const G4String& processName)
 : G4VDiscreteProcess(processName),MaxChargedStep(DBL_MAX)
{
  pMess = new HadrontherapyStepMaxMessenger(this);
}
 
HadrontherapyStepMax::~HadrontherapyStepMax() { delete pMess; }

G4bool HadrontherapyStepMax::IsApplicable(const G4ParticleDefinition& particle) 
{ 
  return (particle.GetPDGCharge() != 0.);
}

void HadrontherapyStepMax::SetMaxStep(G4double step) {MaxChargedStep = step;}

G4double HadrontherapyStepMax::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
                                                  G4double,
                                                  G4ForceCondition* condition )
{
  // condition is set to "Not Forced"
  *condition = NotForced;
  
  G4double ProposedStep = DBL_MAX;
if((MaxChargedStep > 0.) &&
   (aTrack.GetVolume() != 0) && ((aTrack.GetVolume()->GetName() == "DetectorPhys")||(aTrack.GetVolume()->GetName() == "InternalChamber")||(aTrack.GetVolume()->GetName() == "CollimatorHole")||(aTrack.GetVolume()->GetName() == "PhysFourthTQuad")||(aTrack.GetVolume()->GetName() == "PhysThirdTQuad")||(aTrack.GetVolume()->GetName() == "PhysSecondTQuad")||(aTrack.GetVolume()->GetName() == "PhysFirstTQuad")||(aTrack.GetVolume()->GetName() =="physQuadChamber")||(aTrack.GetVolume()->GetName() =="PVirtualMag")||(aTrack.GetVolume()->GetName() =="PhysicCup")))

     ProposedStep = MaxChargedStep;

  return ProposedStep;
}

G4VParticleChange* HadrontherapyStepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
{
   // do nothing
   aParticleChange.Initialize(aTrack);
   return &aParticleChange;
}