src/PhysicsList.cc

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//
// $Id: PhysicsList.cc 194 2008-10-24 13:12:51Z maire $
//
// PhysicsList.cc
//
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#include "globals.hh"
#include "PhysicsList.hh"

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

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PhysicsList::PhysicsList():  G4VUserPhysicsList()
{
  defaultCutValue = 1.0*mm;
  SetVerboseLevel(1);
}

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PhysicsList::~PhysicsList()
{}

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void PhysicsList::ConstructParticle()
{
  // pseudo-particles
  G4Geantino::GeantinoDefinition();

  // gamma
  G4Gamma::GammaDefinition();
  
  // e+/-
  G4Electron::ElectronDefinition();
  G4Positron::PositronDefinition();
  
  // muon
  G4MuonPlus::MuonPlusDefinition();
  G4MuonMinus::MuonMinusDefinition();
  
  // neutrino
  G4NeutrinoE::NeutrinoEDefinition();
  G4AntiNeutrinoE::AntiNeutrinoEDefinition();
  G4NeutrinoMu::NeutrinoMuDefinition();
  G4AntiNeutrinoMu::AntiNeutrinoMuDefinition();

  // proton+neutron  
  G4Proton::ProtonDefinition();
  G4Neutron::NeutronDefinition();
}

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void PhysicsList::ConstructProcess()
{
  AddTransportation();
  ConstructEM();
  ConstructDecay();

  // step limitation (as a full process)
  //  
  AddStepMax();      
}

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

#include "G4MultipleScattering.hh"

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

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

#include "G4hIonisation.hh"

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void PhysicsList::ConstructEM()
{
  theParticleIterator->reset();
  while( (*theParticleIterator)() ){
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    G4String particleName = particle->GetParticleName();
     
    if (particleName == "gamma") {
      // gamma         
      pmanager->AddDiscreteProcess(new G4PhotoElectricEffect);
      pmanager->AddDiscreteProcess(new G4ComptonScattering);
      pmanager->AddDiscreteProcess(new G4GammaConversion);
      
    } else if (particleName == "e-") {
      //electron
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
      pmanager->AddProcess(new G4eIonisation,        -1, 2,2);
      pmanager->AddProcess(new G4eBremsstrahlung,    -1, 3,3);      

    } else if (particleName == "e+") {
      //positron
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
      pmanager->AddProcess(new G4eIonisation,        -1, 2,2);
      pmanager->AddProcess(new G4eBremsstrahlung,    -1, 3,3);
      pmanager->AddProcess(new G4eplusAnnihilation,   0,-1,4);

    } else if( particleName == "mu+" || 
               particleName == "mu-"    ) {
      //muon  
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
      pmanager->AddProcess(new G4MuIonisation,       -1, 2,2);
      pmanager->AddProcess(new G4MuBremsstrahlung,   -1, 3,3);
      pmanager->AddProcess(new G4MuPairProduction,   -1, 4,4);
                  
    } else if (particle->GetPDGCharge() != 0.0 && 
               ! particle->IsShortLived()      &&
               particle->GetParticleName() != "chargedgeantino" ) {
      pmanager->AddProcess(new G4MultipleScattering, -1, 1,1);
      pmanager->AddProcess(new G4hIonisation,        -1, 2,2);
    }
  }
}

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#include "G4Decay.hh"

void PhysicsList::ConstructDecay()
{
  // Add Decay Process
  G4Decay* theDecayProcess = new G4Decay();
  theParticleIterator->reset();
  while( (*theParticleIterator)() ){
    G4ParticleDefinition* particle = theParticleIterator->value();
    G4ProcessManager* pmanager = particle->GetProcessManager();
    if (theDecayProcess->IsApplicable(*particle)) {
      pmanager ->AddProcess(theDecayProcess);
      // set ordering for PostStepDoIt and AtRestDoIt
      pmanager ->SetProcessOrdering(theDecayProcess, idxPostStep);
      pmanager ->SetProcessOrdering(theDecayProcess, idxAtRest);
    }
  }
  
}

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#include "G4StepLimiter.hh"

void PhysicsList::AddStepMax()
{
  // Step limitation seen as a process
  G4StepLimiter* stepMaxProcess = new G4StepLimiter();

  theParticleIterator->reset();
  while ((*theParticleIterator)()){
      G4ParticleDefinition* particle = theParticleIterator->value();
      G4ProcessManager* pmanager = particle->GetProcessManager();
      if (particle->GetPDGCharge() != 0.0)
        {
          pmanager ->AddDiscreteProcess(stepMaxProcess);
        }
  }
}

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void PhysicsList::SetCuts()
{
  //G4VUserPhysicsList::SetCutsWithDefault method sets 
  //the default cut value for all particle types 
  //
  SetCutsWithDefault();
     
  if (verboseLevel>0) DumpCutValuesTable();
}

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