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// $Id: G4PolarizedGammaConversion.cc,v 1.3 2007/05/23 08:52:20 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
//
// -------------------------------------------------------------------
//
//
// File name:     G4PolarizedGammaConversion
//
// Author:        Karim Laihem based on code by Michel Maire
//
// Creation date: 01.05.2005
//
// Class Description:
//
// polarized version of G4GammaConversion
// 
// -----------------------------------------------------------------------------

#include "G4PolarizedGammaConversion.hh"
#include "G4PolarizedGammaConversionModel.hh"
#include "G4Electron.hh"

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G4PolarizedGammaConversion::G4PolarizedGammaConversion(const G4String& processName,
  G4ProcessType type):G4VEmProcess (processName, type),
    isInitialised(false)
{
  SetLambdaBinning(100);
  SetMinKinEnergy(2.0*electron_mass_c2);
  SetMaxKinEnergy(100.0*GeV);
}

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G4PolarizedGammaConversion::~G4PolarizedGammaConversion()
{}

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void G4PolarizedGammaConversion::InitialiseProcess(const G4ParticleDefinition*)
{
  if(!isInitialised) {
    isInitialised = true;
    //    SetVerboseLevel(1);
    SetBuildTableFlag(true);
    SetSecondaryParticle(G4Electron::Electron());
    G4double emin = std::max(MinKinEnergy(), 2.0*electron_mass_c2);
    SetMinKinEnergy(emin);
    G4double emax = MaxKinEnergy();
    //    G4VEmModel* model = new G4BetheHeitlerModel();
    G4VEmModel* model = new G4PolarizedGammaConversionModel();
    model->SetLowEnergyLimit(emin);
    model->SetHighEnergyLimit(emax);
    AddEmModel(1, model);
  } 
}

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void G4PolarizedGammaConversion::PrintInfo()
{
  G4cout << " Total cross sections has a good parametrisation" 
         << " from 1.5 MeV to 100 GeV for all Z;"
         << "\n      sampling secondary e+e- according to the polarized compton cross section"
         << G4endl;
}         

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