source: trunk/examples/extended/electromagnetic/TestEm1/src/PhysListEmStandard.cc @ 807

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// $Id: PhysListEmStandard.cc,v 1.14 2007/06/20 15:26:33 maire Exp $
// GEANT4 tag $Name:  $
//
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#include "PhysListEmStandard.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#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"
#include "G4ionIonisation.hh"

#include "G4EmProcessOptions.hh"
#include "G4MscStepLimitType.hh"

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PhysListEmStandard::PhysListEmStandard(const G4String& name)
  :  G4VPhysicsConstructor(name)
{ }

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PhysListEmStandard::~PhysListEmStandard()
{ }

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void PhysListEmStandard::ConstructProcess()
{
  // Add standard EM Processes

  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( particleName == "alpha" || particleName == "He3" 
               || particleName == "GenericIon" ) { 

      pmanager->AddProcess(new G4MultipleScattering,-1, 1, 1);
      pmanager->AddProcess(new G4ionIonisation,     -1, 2, 2);

    } else if ((!particle->IsShortLived()) &&
               (particle->GetPDGCharge() != 0.0) && 
               (particle->GetParticleName() != "chargedgeantino")) {
      //all others charged particles except geantino
      pmanager->AddProcess(new G4MultipleScattering,-1, 1, 1);
      pmanager->AddProcess(new G4hIonisation,       -1, 2, 2);
    }
  }
  
  // Em options
  //
  G4EmProcessOptions emOptions;
    
  //coulomb scattering
  //
  emOptions.SetMscStepLimitation(fUseDistanceToBoundary);   
  emOptions.SetSkin(2.);
  
  //energy loss
  //
  emOptions.SetLinearLossLimit(1.e-6);
  emOptions.SetStepFunction(0.2, 100*um); 
   
  //ionization
  //
  emOptions.SetSubCutoff(true);
    
  // define high energy threshold for bremstrahlung 
  //
  emOptions.SetBremsstrahlungTh(10.*GeV);
}

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