PhysListEmStandard_SS.cc

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//
// $Id: PhysListEmStandard_SS.cc 86064 2014-11-07 08:49:32Z gcosmo $
//
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#include "PhysListEmStandard_SS.hh"
#include "DetectorConstruction.hh"

#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

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

#include "G4CoulombScattering.hh"
#include "G4eCoulombScatteringModel.hh"

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

#include "G4hIonisation.hh"

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

#include "G4SystemOfUnits.hh"

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PhysListEmStandard_SS::PhysListEmStandard_SS(const G4String& name,
                               DetectorConstruction* det)
: G4VPhysicsConstructor(name), fDetector(det)
{}

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PhysListEmStandard_SS::~PhysListEmStandard_SS()
{}

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void PhysListEmStandard_SS::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
    
      G4ComptonScattering* compton = new G4ComptonScattering();
      MyKleinNishinaCompton* comptonModel = 
        new MyKleinNishinaCompton(fDetector);
      comptonModel->SetCSFactor(1000.);      
      compton->SetEmModel(comptonModel );
            
      pmanager->AddDiscreteProcess(new G4PhotoElectricEffect);
      pmanager->AddDiscreteProcess(compton);
      pmanager->AddDiscreteProcess(new G4GammaConversion);
      
    } else if (particleName == "e-") {
      //electron
      
      G4eIonisation* eIoni = new G4eIonisation();
      eIoni->SetEmModel(new MyMollerBhabhaModel, 1);
                         
      G4CoulombScattering* cs = new G4CoulombScattering();
      G4eCoulombScatteringModel* csmod = new G4eCoulombScatteringModel();
      csmod->SetLowEnergyThreshold(1*eV);
      cs->SetEmModel(csmod, 1);
      pmanager->AddProcess(cs,     -1, -1, 1);
      pmanager->AddProcess(eIoni,  -1,  1, 2);
            
    } else if (particleName == "e+") {
      //positron
      
      G4eIonisation* pIoni = new G4eIonisation();
      pIoni->SetEmModel(new MyMollerBhabhaModel);
                               
      pmanager->AddProcess(new G4CoulombScattering,  -1, -1, 1);
      pmanager->AddProcess(pIoni,                    -1,  1, 2);
      pmanager->AddProcess(new G4eplusAnnihilation,   0,- 1, 3);
             
    } else if( particleName == "proton" ) {
      //proton  
      pmanager->AddProcess(new G4CoulombScattering,  -1, -1, 1);
      pmanager->AddProcess(new G4hIonisation,        -1,  1, 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(10*GeV);        //default  
  emOptions.SetDEDXBinning(8*20);        //default=8*7
  emOptions.SetLambdaBinning(8*20);      //default=8*7
  emOptions.SetSplineFlag(true);         //default

  //multiple coulomb scattering
  //
  emOptions.SetPolarAngleLimit(0.0);
        
  //energy loss
  //
  emOptions.SetStepFunction(0.2, 10*um); //default=(0.2, 1*mm)   
           
  //build CSDA range
  //
  emOptions.SetBuildCSDARange(true);          //default=false
  emOptions.SetMaxEnergyForCSDARange(10*GeV); 
  emOptions.SetDEDXBinningForCSDARange(8*20); //default=8*7
          
  //ionization
  //
  emOptions.SetSubCutoff(false);         //default
}

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