examples/advanced/amsEcal/src/PhysListEmStandard.cc

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//
// $Id: PhysListEmStandard.cc 68740 2013-04-05 09:56:39Z gcosmo $
//
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#include "PhysListEmStandard.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

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

#include "G4eMultipleScattering.hh"
#include "G4hMultipleScattering.hh"

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

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

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

  aParticleIterator->reset();
  while( (*aParticleIterator)() ){
    G4ParticleDefinition* particle = aParticleIterator->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 G4eMultipleScattering, -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 G4eMultipleScattering, -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 G4hMultipleScattering, -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 == "proton" ||
               particleName == "pi-" ||
               particleName == "pi+"    ) {
      //proton  
      pmanager->AddProcess(new G4hMultipleScattering, -1, 1, 1);
      pmanager->AddProcess(new G4hIonisation,         -1, 2, 2);
      pmanager->AddProcess(new G4hBremsstrahlung,     -1, 3, 3);
      pmanager->AddProcess(new G4hPairProduction,     -1, 4, 4);       
     
    } else if( particleName == "alpha" || 
           particleName == "He3" || 
           particleName == "GenericIon" ) {
      //Ions 
      pmanager->AddProcess(new G4hMultipleScattering, -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 G4hMultipleScattering, -1, 1, 1);
      pmanager->AddProcess(new G4hIonisation,         -1, 2, 2);
    }
  }

  // Em options
  //
  // Main options and setting parameters are shown here.
  // Several of them have default values.
  //
  G4EmProcessOptions emOptions;
  
  //physics tables
  //
  emOptions.SetMinEnergy(100*eV);   //default    
  emOptions.SetMaxEnergy(100*TeV);  //default  
  emOptions.SetDEDXBinning(12*10);  //default=12*7  
  emOptions.SetLambdaBinning(12*10);    //default=12*7
  emOptions.SetSplineFlag(true);    //default
      
  //multiple coulomb scattering
  //
  emOptions.SetMscStepLimitation(fUseSafety);  //default=fUseSafety
  emOptions.SetMscRangeFactor(0.04);        //default
  emOptions.SetMscGeomFactor (2.5);     //default       
  emOptions.SetSkin(3.);            //default
      
  //energy loss
  //
  emOptions.SetStepFunction(0.2, 100*um);   //default=(0.2, 1*mm)      
  emOptions.SetLinearLossLimit(1.e-2);      //default
   
  //ionization
  //
  emOptions.SetSubCutoff(false);        //default=false
  
  //verbose
  //
  emOptions.SetVerbose(0);
}

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