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/// \file electromagnetic/TestEm8/src/PhysicsList.cc
/// \brief Implementation of the PhysicsList class
//
// $Id$
//
//---------------------------------------------------------------------------
//
// ClassName:   PhysicsList
//
// Description: EM physics with a possibility to add PAI model
//
// Author:      V.Ivanchenko 01.09.2010
//
//----------------------------------------------------------------------------
//

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#include "PhysicsList.hh"
#include "PhysicsListMessenger.hh"

#include "G4EmStandardPhysics.hh"
#include "G4EmStandardPhysics_option1.hh"
#include "G4EmStandardPhysics_option2.hh"
#include "G4EmStandardPhysics_option3.hh"
#include "G4EmStandardPhysics_option4.hh"
#include "G4EmLivermorePhysics.hh"
#include "G4EmPenelopePhysics.hh"
#include "G4DecayPhysics.hh"

#include "G4PAIModel.hh"
#include "G4PAIPhotonModel.hh"

#include "G4Gamma.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4Proton.hh"

#include "G4UnitsTable.hh"
#include "G4SystemOfUnits.hh"
#include "G4LossTableManager.hh"
#include "G4ProductionCutsTable.hh"

#include "StepMax.hh"

#include "G4ProcessManager.hh"
#include "G4ParticleTypes.hh"
#include "G4ParticleTable.hh"

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PhysicsList::PhysicsList() : G4VModularPhysicsList()
{
  fConfig = G4LossTableManager::Instance()->EmConfigurator();
  G4LossTableManager::Instance()->SetVerbose(1);
  defaultCutValue = 1.*mm;
  fCutForGamma     = defaultCutValue;
  fCutForElectron  = defaultCutValue;
  fCutForPositron  = defaultCutValue;
  fCutForProton    = defaultCutValue;

  fMessenger = new PhysicsListMessenger(this);

  fStepMaxProcess = new StepMax();

  // Decay Physics is always defined
  fDecayPhysicsList = new G4DecayPhysics();

  // EM physics
  fEmName = G4String("emstandard");
  fEmPhysicsList = new G4EmStandardPhysics(1);

  SetVerboseLevel(1);
}

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PhysicsList::~PhysicsList()
{
  delete fMessenger;
  delete fDecayPhysicsList;
  delete fEmPhysicsList;
  for(size_t i=0; i<fHadronPhys.size(); ++i) { delete fHadronPhys[i]; }
  delete fStepMaxProcess;
}

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void PhysicsList::ConstructParticle()
{
  fDecayPhysicsList->ConstructParticle();
}

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void PhysicsList::ConstructProcess()
{
  AddTransportation();
  fEmPhysicsList->ConstructProcess();
  fDecayPhysicsList->ConstructProcess();
  for(size_t i=0; i<fHadronPhys.size(); ++i) { fHadronPhys[i]->ConstructProcess(); }
  AddStepMax();
}

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void PhysicsList::AddPhysicsList(const G4String& name)
{
  if (verboseLevel>1) {
    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">" << G4endl;
  }

  if (name == fEmName) {
    return;

  } else if (name == "emstandard_opt1") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option1();

  } else if (name == "emstandard_opt2") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option2();

  } else if (name == "emstandard_opt3") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option3();

  } else if (name == "emstandard_opt4") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmStandardPhysics_option4();

  } else if (name == "emlivermore") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmLivermorePhysics();

  } else if (name == "empenelope") {

    fEmName = name;
    delete fEmPhysicsList;
    fEmPhysicsList = new G4EmPenelopePhysics();

  } else if (name == "pai") {

    fEmName = name;
    AddPAIModel(name);

  } else if (name == "pai_photon") { 

    fEmName = name;
    AddPAIModel(name);

  } else {

    G4cout << "PhysicsList::AddPhysicsList: <" << name << ">"
           << " is not defined"
           << G4endl;
  }
}

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void PhysicsList::AddStepMax()
{
  // Step limitation seen as a process

  theParticleIterator->reset();
  while ((*theParticleIterator)())
  {
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();

    if (fStepMaxProcess->IsApplicable(*particle))
    {
      pmanager ->AddDiscreteProcess(fStepMaxProcess);
    }
  }
}

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void PhysicsList::SetCuts()
{
  G4ProductionCutsTable::GetProductionCutsTable()->SetEnergyRange(100.*eV,1e5);
  if ( verboseLevel > 0 )
  {
    G4cout << "PhysicsList::SetCuts:";
    G4cout << "CutLength : " << G4BestUnit(defaultCutValue,"Length") << G4endl;
  }

  // set cut values for gamma at first and for e- second and next for e+,
  // because some processes for e+/e- need cut values for gamma

  SetCutValue(fCutForGamma, "gamma");
  SetCutValue(fCutForElectron, "e-");
  SetCutValue(fCutForPositron, "e+");
  SetCutValue(fCutForProton, "proton");

  if ( verboseLevel > 0 ) { DumpCutValuesTable(); }
}

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void PhysicsList::SetCutForGamma(G4double cut)
{
  fCutForGamma = cut;
  SetParticleCuts(fCutForGamma, G4Gamma::Gamma());
}

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void PhysicsList::SetCutForElectron(G4double cut)
{
  fCutForElectron = cut;
  SetParticleCuts(fCutForElectron, G4Electron::Electron());
}

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void PhysicsList::SetCutForPositron(G4double cut)
{
  fCutForPositron = cut;
  SetParticleCuts(fCutForPositron, G4Positron::Positron());
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

void PhysicsList::SetCutForProton(G4double cut)
{
  fCutForPositron = cut;
  SetParticleCuts(fCutForProton, G4Proton::Proton());
}

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void PhysicsList::AddPAIModel(const G4String& modname)
{
  theParticleIterator->reset();
  while ((*theParticleIterator)())
  {
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4String partname = particle->GetParticleName();
    if(partname == "e-" || partname == "e+") {
      NewPAIModel(particle, modname, "eIoni");

    } else if(partname == "mu-" || partname == "mu+") {
      NewPAIModel(particle, modname, "muIoni");

    } else if(partname == "proton" ||
              partname == "pi+" ||
              partname == "pi-"   
              ) {
      NewPAIModel(particle, modname, "hIoni");
    }
  }
}

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void PhysicsList::NewPAIModel(const G4ParticleDefinition* part, 
                              const G4String& modname,
                              const G4String& procname)
{
  G4String partname = part->GetParticleName();
  if(modname == "pai") {
    G4PAIModel* pai = new G4PAIModel(part,"PAIModel");
    fConfig->SetExtraEmModel(partname,procname,pai,"GasDetector",
                              0.0,100.*TeV,pai);
  } else if(modname == "pai_photon") {
    G4PAIPhotonModel* pai = new G4PAIPhotonModel(part,"PAIPhotModel");
    fConfig->SetExtraEmModel(partname,procname,pai,"GasDetector",
                              0.0,100.*TeV,pai);
  }
}

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