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// $Id: G4ionIonisation.cc,v 1.66 2009/02/20 12:06:37 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name:     G4ionIonisation
//
// Author:        Vladimir Ivanchenko
//
// Creation date: 07.05.2002
//
// Modifications:
//
// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
// 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
// 18-04-03 Use IonFluctuations (V.Ivanchenko)
// 03-08-03 Add effective charge (V.Ivanchenko)
// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
// 27-05-04 Set integral to be a default regime (V.Ivanchenko)
// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
// 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko)
// 10-05-06 Add a possibility to download user data (V.Ivantchenko)
// 13-05-06 Add data for light ion stopping in water (V.Ivantchenko)
// 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma)
// 16-05-07 Add data for light ion stopping only for GenericIon (V.Ivantchenko)
// 07-11-07 Fill non-ionizing energy loss (V.Ivantchenko)
// 12-09-08 Removed InitialiseMassCharge and CorrectionsAlongStep (VI)
//
//
// -------------------------------------------------------------------
//
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//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

#include "G4ionIonisation.hh"
#include "G4Electron.hh"
#include "G4Proton.hh"
//#include "G4Alpha.hh"
#include "G4GenericIon.hh"
#include "G4BraggModel.hh"
#include "G4BraggIonModel.hh"
#include "G4BetheBlochModel.hh"
#include "G4UnitsTable.hh"
#include "G4LossTableManager.hh"
#include "G4WaterStopping.hh"
#include "G4EmCorrections.hh"
#include "G4IonFluctuations.hh"

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using namespace std;

G4ionIonisation::G4ionIonisation(const G4String& name)
  : G4VEnergyLossProcess(name),
    corr(0),
    theParticle(0),
    isInitialised(false),
    stopDataActive(true),
    nuclearStopping(true)
{
  SetLinearLossLimit(0.15);
  SetStepFunction(0.1, 0.1*mm);
  SetIntegral(true);
  SetProcessSubType(fIonisation);
  //  SetVerboseLevel(1);
  corr = G4LossTableManager::Instance()->EmCorrections();
}

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G4ionIonisation::~G4ionIonisation()
{}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

G4bool G4ionIonisation::IsApplicable(const G4ParticleDefinition& p)
{
  return (p.GetPDGCharge() != 0.0 && !p.IsShortLived() &&
          p.GetParticleType() == "nucleus");
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

G4double G4ionIonisation::MinPrimaryEnergy(const G4ParticleDefinition* p, 
					   const G4Material*, 
					   G4double cut)
{
  return 
    p->GetPDGMass()*(std::sqrt(1. + 0.5*cut/CLHEP::electron_mass_c2) - 1.0);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

void G4ionIonisation::InitialiseEnergyLossProcess(
		      const G4ParticleDefinition* part,
		      const G4ParticleDefinition* bpart)
{
  const G4ParticleDefinition* ion = G4GenericIon::GenericIon();

  if(!isInitialised) {

    theParticle = part;
    //G4String pname = part->GetParticleName();

    // define base particle
    const G4ParticleDefinition* theBaseParticle = 0;

    if(part == ion)     theBaseParticle = 0;
    else if(bpart == 0) theBaseParticle = ion;
    else                theBaseParticle = bpart;

    SetBaseParticle(theBaseParticle);
    SetSecondaryParticle(G4Electron::Electron());

    if (!EmModel(1)) SetEmModel(new G4BraggIonModel(), 1);
    EmModel(1)->SetLowEnergyLimit(MinKinEnergy());

    // model limit defined for protons
    eth = (EmModel(1)->HighEnergyLimit())*part->GetPDGMass()/proton_mass_c2;
    EmModel(1)->SetHighEnergyLimit(eth);

    if (!FluctModel()) SetFluctModel(new G4IonFluctuations());
    AddEmModel(1, EmModel(1), FluctModel());

    if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2);  
    EmModel(2)->SetLowEnergyLimit(eth);
    EmModel(2)->SetHighEnergyLimit(MaxKinEnergy());
    AddEmModel(2, EmModel(2), FluctModel());    

    // Add ion stoping tables for Generic Ion
    if(part == ion) {
      G4WaterStopping  ws(corr);
      corr->SetIonisationModels(EmModel(1),EmModel(2));
    }
    isInitialised = true;
  }
  // reinitialisation of corrections for the new run
  EmModel(1)->ActivateNuclearStopping(nuclearStopping);
  EmModel(2)->ActivateNuclearStopping(nuclearStopping);
  if(part == ion) corr->InitialiseForNewRun();
}

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void G4ionIonisation::PrintInfo()
{
  if (stopDataActive && G4GenericIon::GenericIon() == theParticle) {
    G4cout << "      Stopping Power data for " 
           << corr->GetNumberOfStoppingVectors()
	   << " ion/material pairs, nuclearStopping: " << nuclearStopping
           << G4endl;
  }
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

void G4ionIonisation::AddStoppingData(G4int Z, G4int A,
				      const G4String& mname,
				      G4PhysicsVector* dVector)
{
  corr->AddStoppingData(Z, A, mname, dVector);
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
