WLSPrimaryGeneratorAction Class Reference

#include <WLSPrimaryGeneratorAction.hh>

Inheritance diagram for WLSPrimaryGeneratorAction:

Collaboration diagram for WLSPrimaryGeneratorAction:

Public Member Functions
	WLSPrimaryGeneratorAction (WLSDetectorConstruction *)
virtual	~WLSPrimaryGeneratorAction ()
virtual void	GeneratePrimaries (G4Event *)
void	BuildEmissionSpectrum ()
void	SetOptPhotonPolar (G4double)
void	SetDecayTimeConstant (G4double)
Public Member Functions inherited from G4VUserPrimaryGeneratorAction
	G4VUserPrimaryGeneratorAction ()
virtual	~G4VUserPrimaryGeneratorAction ()

Protected Attributes
G4PhysicsTable *	fIntegralTable

Detailed Description

Definition at line 51 of file WLSPrimaryGeneratorAction.hh.

Constructor & Destructor Documentation

WLSPrimaryGeneratorAction::WLSPrimaryGeneratorAction

(

WLSDetectorConstruction *

dc

)

Definition at line 65 of file WLSPrimaryGeneratorAction.cc.

{
  fDetector = dc;
  fIntegralTable = NULL;

  fParticleGun = new G4GeneralParticleSource();
 
  fGunMessenger = new WLSPrimaryGeneratorMessenger(this);

  // G4String particleName;
  // G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();

  fTimeConstant = 0.;

//  fParticleGun->SetParticleDefinition(particleTable->
//                               FindParticle(particleName="opticalphoton"));
}

WLSPrimaryGeneratorAction::~WLSPrimaryGeneratorAction ( )

virtual

Definition at line 85 of file WLSPrimaryGeneratorAction.cc.

{
  delete fParticleGun;
  delete fGunMessenger;
  if (fIntegralTable) {
     fIntegralTable->clearAndDestroy();
     delete fIntegralTable;
  }
}

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Member Function Documentation

void WLSPrimaryGeneratorAction::BuildEmissionSpectrum

(

)

Definition at line 104 of file WLSPrimaryGeneratorAction.cc.

{
   if (fIntegralTable) return;

   const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();

   G4int numOfMaterials = G4Material::GetNumberOfMaterials();

   if(!fIntegralTable)fIntegralTable = new G4PhysicsTable(numOfMaterials);

   for (G4int i=0 ; i < numOfMaterials; i++) {

       G4PhysicsOrderedFreeVector* aPhysicsOrderedFreeVector =
                                           new G4PhysicsOrderedFreeVector();

       G4Material* aMaterial = (*theMaterialTable)[i];

       G4MaterialPropertiesTable* aMaterialPropertiesTable =
                                    aMaterial->GetMaterialPropertiesTable();

       if (aMaterialPropertiesTable) {
          G4MaterialPropertyVector* theWLSVector =
                      aMaterialPropertiesTable->GetProperty("WLSCOMPONENT");

          if (theWLSVector) {
             G4double currentIN = (*theWLSVector)[0];
             if (currentIN >= 0.0) {
                G4double currentPM = theWLSVector->Energy(0);
                G4double currentCII = 0.0;
                aPhysicsOrderedFreeVector->
                                     InsertValues(currentPM , currentCII);
                G4double prevPM  = currentPM;
                G4double prevCII = currentCII;
                G4double prevIN  = currentIN;

                for (size_t j = 1;
                     j < theWLSVector->GetVectorLength();
                     j++)
                {
                  currentPM = theWLSVector->Energy(j);
                  currentIN = (*theWLSVector)[j];
                  currentCII = 0.5 * (prevIN + currentIN);
                  currentCII = prevCII + (currentPM - prevPM) * currentCII;
                  aPhysicsOrderedFreeVector->
                                     InsertValues(currentPM, currentCII);
                  prevPM  = currentPM;
                  prevCII = currentCII;
                  prevIN  = currentIN;
                }
             }
          }
       }
       fIntegralTable->insertAt(i,aPhysicsOrderedFreeVector);
   }
}

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void WLSPrimaryGeneratorAction::GeneratePrimaries ( G4Event *  anEvent )

virtual

Implements G4VUserPrimaryGeneratorAction.

Definition at line 162 of file WLSPrimaryGeneratorAction.cc.

{
  if (!fFirst) {
     fFirst = true;
     BuildEmissionSpectrum();
  }

#ifdef use_sampledEnergy
  const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();

  G4double sampledEnergy = 3*eV;

  for (size_t j=0 ; j<theMaterialTable->size() ; j++) {
      G4Material* fMaterial = (*theMaterialTable)[j];
      if (fMaterial->GetName() == "PMMA" ) {
         G4MaterialPropertiesTable* aMaterialPropertiesTable =
                                      fMaterial->GetMaterialPropertiesTable();
         const G4MaterialPropertyVector* WLSIntensity =
                   aMaterialPropertiesTable->GetProperty("WLSCOMPONENT");

         if (WLSIntensity) {
            G4int MaterialIndex = fMaterial->GetIndex();
            G4PhysicsOrderedFreeVector* WLSIntegral =
              (G4PhysicsOrderedFreeVector*)((*fIntegralTable)(MaterialIndex));

            G4double CIImax = WLSIntegral->GetMaxValue();
            G4double CIIvalue = G4UniformRand()*CIImax;

            sampledEnergy = WLSIntegral->GetEnergy(CIIvalue);
         }
      }
  }

  //fParticleGun->SetParticleEnergy(sampledEnergy);
#endif

  //The code behing this line is not thread safe because polarization
  //and time are randomly selected and GPS properties are global
  G4AutoLock l(&gen_mutex);
  if(fParticleGun->GetParticleDefinition()->GetParticleName()=="opticalphoton"){
    SetOptPhotonPolar();
    SetOptPhotonTime();
  }

  fParticleGun->GeneratePrimaryVertex(anEvent);
}

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void WLSPrimaryGeneratorAction::SetDecayTimeConstant

(

G4double

time

)

Definition at line 97 of file WLSPrimaryGeneratorAction.cc.

{
  fTimeConstant = time;
}

void WLSPrimaryGeneratorAction::SetOptPhotonPolar

(

G4double

angle

)

Definition at line 219 of file WLSPrimaryGeneratorAction.cc.

{
  if (fParticleGun->GetParticleDefinition()->GetParticleName()!="opticalphoton")
  {
     G4cout << "-> warning from WLSPrimaryGeneratorAction::SetOptPhotonPolar()"
            << ":  the ParticleGun is not an opticalphoton" << G4endl;
     return;
  }

  G4ThreeVector normal (1., 0., 0.);
  G4ThreeVector kphoton = fParticleGun->GetParticleMomentumDirection();
  G4ThreeVector product = normal.cross(kphoton);
  G4double modul2       = product*product;

  G4ThreeVector e_perpend (0., 0., 1.);
  if (modul2 > 0.) e_perpend = (1./std::sqrt(modul2))*product;
  G4ThreeVector e_paralle    = e_perpend.cross(kphoton);

  G4ThreeVector polar = std::cos(angle)*e_paralle + std::sin(angle)*e_perpend;
  fParticleGun->SetParticlePolarization(polar);

}

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Member Data Documentation

G4PhysicsTable* WLSPrimaryGeneratorAction::fIntegralTable

protected

Definition at line 70 of file WLSPrimaryGeneratorAction.hh.

---

The documentation for this class was generated from the following files:

• source/geant4.10.03.p02/examples/extended/optical/wls/include/WLSPrimaryGeneratorAction.hh
• source/geant4.10.03.p02/examples/extended/optical/wls/src/WLSPrimaryGeneratorAction.cc