PhysListEmStandard_WVI.cc

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

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

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

#include "G4eMultipleScattering.hh"
#include "G4MuMultipleScattering.hh"
#include "G4WentzelVIModel.hh"
#include "G4CoulombScattering.hh"
#include "G4eCoulombScatteringModel.hh"

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

#include "G4hIonisation.hh"
#include "G4hMultipleScattering.hh"

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

#include "G4SystemOfUnits.hh"

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

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PhysListEmStandard_WVI::~PhysListEmStandard_WVI()
{}

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void PhysListEmStandard_WVI::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

      G4MuMultipleScattering* eMsc = new G4MuMultipleScattering();
      G4WentzelVIModel* wvi = new G4WentzelVIModel();
      //wvi->SetFixedCut(50*eV);
      eMsc->SetEmModel(wvi,1); 

      G4eIonisation* eIoni = new G4eIonisation();
      eIoni->SetEmModel(new MyMollerBhabhaModel(), 1);

      G4CoulombScattering* cs = new G4CoulombScattering();
      G4eCoulombScatteringModel* single = new G4eCoulombScatteringModel();
      single->SetLowEnergyThreshold(1*eV);
      cs->SetEmModel(single, 1);

      pmanager->AddProcess(eMsc, -1, 1, 1);
      pmanager->AddProcess(eIoni,-1, 2, 2);
      pmanager->AddProcess(cs,   -1,-1, 3);
                  
    } else if (particleName == "e+") {
      //positron

      G4MuMultipleScattering* pMsc = new G4MuMultipleScattering();
      pMsc->AddEmModel(1, new G4WentzelVIModel());
      G4eIonisation* pIoni = new G4eIonisation();
      pIoni->SetEmModel(new MyMollerBhabhaModel);
                               
      pmanager->AddProcess(pMsc,                      -1, 1, 1);
      pmanager->AddProcess(pIoni,                     -1, 2, 2);
      pmanager->AddProcess(new G4eplusAnnihilation,    0,-1, 3);
      pmanager->AddProcess(new G4CoulombScattering,   -1,-1, 4);
                   
    } else if( particleName == "proton" ) {
      //proton
      G4hMultipleScattering* msc = new G4hMultipleScattering();
      msc->AddEmModel(1, new G4WentzelVIModel());
      pmanager->AddProcess(msc,                       -1, 1, 1);
      pmanager->AddProcess(new G4hIonisation,         -1, 2, 2);
      pmanager->AddProcess(new G4CoulombScattering,   -1,-1, 3);      
    }
  }

  // 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 
  
  //multiple coulomb scattering
  //
  emOptions.SetPolarAngleLimit(0.2);
  
  //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*7);    //default=8*7
          
  //ionization
  //
  emOptions.SetSubCutoff(false);        //default  
}

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