geant4/examples/advanced/nanobeam/src/PhysicsList.cc

//
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// * technical work of the GEANT4 collaboration.                      *
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//
// Please cite the following paper if you use this software
// Nucl.Instrum.Meth.B260:20-27, 2007

#include "PhysicsList.hh"
#include "G4SystemOfUnits.hh"

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PhysicsList::PhysicsList():  G4VUserPhysicsList()
{
  defaultCutValue = 1*micrometer;
  fCutForGamma     = defaultCutValue;
  fCutForElectron  = defaultCutValue;
  fCutForPositron  = defaultCutValue;
  fCutForProton    = defaultCutValue;
  
  SetVerboseLevel(1);
}

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PhysicsList::~PhysicsList()
{}

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void PhysicsList::ConstructParticle()
{
  ConstructBosons();
  ConstructLeptons();
  ConstructBarions();
}

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void PhysicsList::ConstructBosons()
{ 
  // gamma
  G4Gamma::GammaDefinition();

  // optical photon
  G4OpticalPhoton::OpticalPhotonDefinition();
}
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void PhysicsList::ConstructLeptons()
{
  // leptons
  G4Electron::ElectronDefinition();
  G4Positron::PositronDefinition();
}

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void PhysicsList::ConstructBarions()
{
  //  barions
  G4Proton::ProtonDefinition();
  G4AntiProton::AntiProtonDefinition();
  G4GenericIon::GenericIonDefinition();
}

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void PhysicsList::ConstructProcess()
{
  AddTransportation();
  ConstructEM();
  ConstructGeneral();
}

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#include "G4PhotoElectricEffect.hh"
#include "G4ComptonScattering.hh"
#include "G4GammaConversion.hh"

#include "G4eMultipleScattering.hh"
#include "G4eIonisation.hh"
#include "G4eBremsstrahlung.hh"
#include "G4eplusAnnihilation.hh"

#include "G4MuMultipleScattering.hh"
#include "G4WentzelVIModel.hh"

#include "G4MuIonisation.hh"
#include "G4MuBremsstrahlung.hh"
#include "G4MuPairProduction.hh"
#include "G4CoulombScattering.hh"

#include "G4hMultipleScattering.hh"
#include "G4ionIonisation.hh"
#include "G4hIonisation.hh"
#include "G4hBremsstrahlung.hh"
#include "G4hPairProduction.hh"

#include "G4StepLimiter.hh"

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void PhysicsList::ConstructEM()
{

  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();

// ****************************************************************
// Identical to G4EmStandardPhysics but added G4StepLimiter process
// ****************************************************************


  auto particleIterator=GetParticleIterator();
  particleIterator->reset();

  while( (*particleIterator)() ){

    G4ParticleDefinition* particle = particleIterator->value();

    G4String particleName = particle->GetParticleName();

    if (particleName == "gamma") {

      ph->RegisterProcess(new G4PhotoElectricEffect(), particle);
      ph->RegisterProcess(new G4ComptonScattering(), particle);
      ph->RegisterProcess(new G4GammaConversion(), particle);

    } else if (particleName == "e-") {

      ph->RegisterProcess(new G4eMultipleScattering(), particle);
      ph->RegisterProcess(new G4eIonisation(), particle);
      ph->RegisterProcess(new G4eBremsstrahlung(), particle);

    } else if (particleName == "e+") {

      ph->RegisterProcess(new G4eMultipleScattering(), particle);
      ph->RegisterProcess(new G4eIonisation(), particle);
      ph->RegisterProcess(new G4eBremsstrahlung(), particle);
      ph->RegisterProcess(new G4eplusAnnihilation(), particle);
      
    } else if( particleName == "mu+" || 
               particleName == "mu-"    ) {

      G4MuMultipleScattering* msc = new G4MuMultipleScattering();
      msc->AddEmModel(0, new G4WentzelVIModel());

      ph->RegisterProcess(msc, particle);
      ph->RegisterProcess(new G4MuIonisation(), particle);
      ph->RegisterProcess(new G4MuBremsstrahlung(), particle);
      ph->RegisterProcess(new G4MuPairProduction(), particle);
      ph->RegisterProcess(new G4CoulombScattering(), particle);

    } else if (particleName == "alpha" ||
               particleName == "He3") {

      ph->RegisterProcess(new G4hMultipleScattering(), particle);
      ph->RegisterProcess(new G4ionIonisation(), particle);

    } else if (particleName == "GenericIon") {

      ph->RegisterProcess(new G4hMultipleScattering(), particle);
      ph->RegisterProcess(new G4ionIonisation(), particle);
     
    } else if (particleName == "proton") {
      ph->RegisterProcess(new G4hMultipleScattering(), particle);
      ph->RegisterProcess(new G4hIonisation(), particle);
      ph->RegisterProcess(new G4hBremsstrahlung(), particle);
      ph->RegisterProcess(new G4hPairProduction(), particle);

      ph->RegisterProcess(new G4StepLimiter(), particle);
            
    }
  }
}

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void PhysicsList::ConstructGeneral()
{ }

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void PhysicsList::SetCuts()
{
  if (verboseLevel >0){
    G4cout << "PhysicsList::SetCuts:";
    G4cout << "CutLength : " << G4BestUnit(defaultCutValue,"Length") << G4endl;
  }  
  
  SetCutValue(fCutForGamma, "gamma");
  SetCutValue(fCutForElectron, "e-");
  SetCutValue(fCutForPositron, "e+");
  SetCutValue(fCutForProton, "proton");
  SetCutValue(fCutForProton, "anti_proton");
  
  if (verboseLevel>0) DumpCutValuesTable();
}

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void PhysicsList::SetGammaCut(G4double val)
{
  fCutForGamma = val;
}

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void PhysicsList::SetElectronCut(G4double val)
{
  fCutForElectron = val;
}

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void PhysicsList::SetPositronCut(G4double val)
{
  fCutForPositron = val;
}

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void PhysicsList::SetProtonCut(G4double val)
{
  fCutForProton = val;
}