G4EmLivermorePhysics Class Reference

#include <G4EmLivermorePhysics.hh>

Inheritance diagram for G4EmLivermorePhysics:

Public Member Functions
	G4EmLivermorePhysics (G4int ver=1, const G4String &name="G4EmLivermore")
	~G4EmLivermorePhysics () override
void	ConstructParticle () override
void	ConstructProcess () override
Public Member Functions inherited from G4VPhysicsConstructor
	G4VPhysicsConstructor (const G4String &="")
	G4VPhysicsConstructor (const G4String &name, G4int physics_type)
virtual	~G4VPhysicsConstructor ()
void	SetPhysicsName (const G4String &="")
const G4String &	GetPhysicsName () const
void	SetPhysicsType (G4int)
G4int	GetPhysicsType () const
G4int	GetInstanceID () const
virtual void	TerminateWorker ()
void	SetVerboseLevel (G4int value)
G4int	GetVerboseLevel () const

Additional Inherited Members
Static Public Member Functions inherited from G4VPhysicsConstructor
static const G4VPCManager &	GetSubInstanceManager ()
Protected Types inherited from G4VPhysicsConstructor
using	PhysicsBuilder_V = G4VPCData::PhysicsBuilders_V
Protected Member Functions inherited from G4VPhysicsConstructor
G4bool	RegisterProcess (G4VProcess *process, G4ParticleDefinition *particle)
G4ParticleTable::G4PTblDicIterator *	GetParticleIterator () const
PhysicsBuilder_V	GetBuilders () const
void	AddBuilder (G4PhysicsBuilderInterface *bld)
Protected Attributes inherited from G4VPhysicsConstructor
G4int	verboseLevel = 0
G4String	namePhysics = ""
G4int	typePhysics = 0
G4ParticleTable *	theParticleTable = nullptr
G4int	g4vpcInstanceID = 0
Static Protected Attributes inherited from G4VPhysicsConstructor
static G4RUN_DLL G4VPCManager	subInstanceManager

Detailed Description

Definition at line 35 of file G4EmLivermorePhysics.hh.

Constructor & Destructor Documentation

G4EmLivermorePhysics()

G4EmLivermorePhysics::G4EmLivermorePhysics ( G4int ver = 1, const G4String & name = "G4EmLivermore" )

explicit

Definition at line 112 of file G4EmLivermorePhysics.cc.

  : G4VPhysicsConstructor(pname)
{
  SetVerboseLevel(ver);
  G4EmParameters* param = G4EmParameters::Instance();
  param->SetDefaults();
  param->SetVerbose(ver);
  param->SetMinEnergy(100*CLHEP::eV);
  param->SetLowestElectronEnergy(100*CLHEP::eV);
  param->SetNumberOfBinsPerDecade(20);
  param->ActivateAngularGeneratorForIonisation(true);
  param->SetStepFunction(0.2, 10*CLHEP::um);
  param->SetStepFunctionMuHad(0.1, 50*CLHEP::um);
  param->SetStepFunctionLightIons(0.1, 20*CLHEP::um);
  param->SetStepFunctionIons(0.1, 1*CLHEP::um);
  param->SetUseMottCorrection(true);
  param->SetMscStepLimitType(fUseSafetyPlus);
  param->SetMscSkin(3);
  param->SetMscRangeFactor(0.08);
  param->SetMuHadLateralDisplacement(true);
  param->SetFluo(true);
  param->SetUseICRU90Data(true);
  param->SetFluctuationType(fUrbanFluctuation);
  param->SetMaxNIELEnergy(1*CLHEP::MeV);
  param->SetPositronAtRestModelType(fAllisonPositronium);
  SetPhysicsType(bElectromagnetic);
}

Referenced by G4EmLivermorePolarizedPhysics::G4EmLivermorePolarizedPhysics().

~G4EmLivermorePhysics()

G4EmLivermorePhysics::~G4EmLivermorePhysics ( )

overridedefault

Member Function Documentation

ConstructParticle()

void G4EmLivermorePhysics::ConstructParticle ( )

overridevirtual

Implements G4VPhysicsConstructor.

Definition at line 146 of file G4EmLivermorePhysics.cc.

{
  // minimal set of particles for EM physics
  G4EmBuilder::ConstructMinimalEmSet();
}

ConstructProcess()

void G4EmLivermorePhysics::ConstructProcess ( )

overridevirtual

Implements G4VPhysicsConstructor.

Definition at line 154 of file G4EmLivermorePhysics.cc.

{
  if(verboseLevel > 1) {
    G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
  }
  G4EmBuilder::PrepareEMPhysics();
  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
  G4EmParameters* param = G4EmParameters::Instance();
  
  // processes used by several particles
  G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
 
  // high energy limit for e+- scattering models
  G4double highEnergyLimit= param->MscEnergyLimit();
  G4double livEnergyLimit = 1*CLHEP::GeV;
 
  // nuclear stopping
  G4double nielEnergyLimit = param->MaxNIELEnergy();
  G4NuclearStopping* pnuc = nullptr;
  if(nielEnergyLimit > 0.0) {
    pnuc = new G4NuclearStopping();
    pnuc->SetMaxKinEnergy(nielEnergyLimit);
  }
 
  // Add Livermore EM Processes
 
  // Add gamma EM Processes
  G4ParticleDefinition* particle = G4Gamma::Gamma();
  G4bool polar = param->EnablePolarisation();
 
  // photoelectric effect - Livermore model only
  G4PhotoElectricEffect* pe = new G4PhotoElectricEffect();
  G4VEmModel* peModel = new G4LivermorePhotoElectricModel();
  pe->SetEmModel(peModel);
  if(polar) {
    peModel->SetAngularDistribution(new G4PhotoElectricAngularGeneratorPolarized());
  }
 
  // Compton scattering - Livermore model only
  G4ComptonScattering* cs = new G4ComptonScattering;
  cs->SetEmModel(new G4KleinNishinaModel());
  G4VEmModel* cModel = nullptr;
  if(polar) { 
    cModel = new G4LivermorePolarizedComptonModel();
    cModel->SetHighEnergyLimit(20*CLHEP::MeV);
  } else {
    cModel = new G4LivermoreComptonModel();
    cModel->SetHighEnergyLimit(livEnergyLimit);
  }
  cs->AddEmModel(0, cModel);
 
  // gamma conversion 
  G4GammaConversion* gc = new G4GammaConversion();
  G4VEmModel* convLiv = new G4LivermoreGammaConversion5DModel();
  gc->SetEmModel(convLiv);
 
  // Rayleigh scattering
  G4RayleighScattering* rl = new G4RayleighScattering();
  if(polar) {
    rl->SetEmModel(new G4LivermorePolarizedRayleighModel());
  }
 
  ph->RegisterProcess(pe, particle);
  ph->RegisterProcess(cs, particle);
  ph->RegisterProcess(gc, particle);
  ph->RegisterProcess(rl, particle);
 
  // e-
  particle = G4Electron::Electron();
 
  // multiple and single scattering
  G4GoudsmitSaundersonMscModel* msc1 = new G4GoudsmitSaundersonMscModel();
  G4WentzelVIModel* msc2 = new G4WentzelVIModel();
  msc1->SetHighEnergyLimit(highEnergyLimit);
  msc2->SetLowEnergyLimit(highEnergyLimit);
  G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
 
  G4eCoulombScatteringModel* ssm = new G4eCoulombScatteringModel(); 
  G4CoulombScattering* ss = new G4CoulombScattering();
  ss->SetEmModel(ssm); 
  ss->SetMinKinEnergy(highEnergyLimit);
  ssm->SetLowEnergyLimit(highEnergyLimit);
  ssm->SetActivationLowEnergyLimit(highEnergyLimit);
      
  // Ionisation - Livermore should be used only for low energies
  G4eIonisation* eioni = new G4eIonisation();
  eioni->SetFluctModel(G4EmStandUtil::ModelOfFluctuations());
  G4VEmModel* theIoniLiv = new G4LivermoreIonisationModel();
  theIoniLiv->SetHighEnergyLimit(0.1*CLHEP::MeV); 
  eioni->AddEmModel(0, theIoniLiv);
      
  // Bremsstrahlung
  G4eBremsstrahlung* brem = new G4eBremsstrahlung();
  G4SeltzerBergerModel* br1 = new G4SeltzerBergerModel();
  G4eBremsstrahlungRelModel* br2 = new G4eBremsstrahlungRelModel();
  br1->SetAngularDistribution(new G4Generator2BS());
  br2->SetAngularDistribution(new G4Generator2BS());
  brem->SetEmModel(br1);
  brem->SetEmModel(br2);
  br1->SetHighEnergyLimit(GeV);
 
  G4ePairProduction* ee = new G4ePairProduction();
     
  // register processes
  ph->RegisterProcess(eioni, particle);
  ph->RegisterProcess(brem, particle);
  ph->RegisterProcess(ee, particle);
  ph->RegisterProcess(ss, particle);
 
  // e+
  particle = G4Positron::Positron();
 
  // multiple and single scattering
  msc1 = new G4GoudsmitSaundersonMscModel();
  msc2 = new G4WentzelVIModel();
  msc1->SetHighEnergyLimit(highEnergyLimit);
  msc2->SetLowEnergyLimit(highEnergyLimit);
  G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
 
  ssm = new G4eCoulombScatteringModel(); 
  ss = new G4CoulombScattering();
  ss->SetEmModel(ssm); 
  ss->SetMinKinEnergy(highEnergyLimit);
  ssm->SetLowEnergyLimit(highEnergyLimit);
  ssm->SetActivationLowEnergyLimit(highEnergyLimit);
 
  // ionisation
  eioni = new G4eIonisation();
 
  // Bremsstrahlung from standard
  brem = new G4eBremsstrahlung();
  br1 = new G4SeltzerBergerModel();
  br2 = new G4eBremsstrahlungRelModel();
  br1->SetAngularDistribution(new G4Generator2BS());
  br2->SetAngularDistribution(new G4Generator2BS());
  brem->SetEmModel(br1);
  brem->SetEmModel(br2);
  br1->SetHighEnergyLimit(GeV);
 
  // annihilation
  auto anni = new G4eplusAnnihilation();
  if (param->Use3GammaAnnihilationOnFly()) {
    anni->SetEmModel(new G4eplusTo2or3GammaModel());
  }
 
  // register processes
  ph->RegisterProcess(eioni, particle);
  ph->RegisterProcess(brem, particle);
  ph->RegisterProcess(ee, particle);
  ph->RegisterProcess(anni, particle);
  ph->RegisterProcess(ss, particle);
 
  // generic ion
  particle = G4GenericIon::GenericIon();
  G4ionIonisation* ionIoni = new G4ionIonisation();
  ionIoni->SetEmModel(new G4LindhardSorensenIonModel());
  ph->RegisterProcess(hmsc, particle);
  ph->RegisterProcess(ionIoni, particle);
  if(nullptr != pnuc) { ph->RegisterProcess(pnuc, particle); }
 
  // muons, hadrons, ions
  G4EmBuilder::ConstructCharged(hmsc, pnuc);
 
  // extra configuration
  G4EmModelActivator mact(GetPhysicsName());
 
}

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

• G4EmLivermorePhysics.hh
• G4EmLivermorePhysics.cc