G4ParticleHPElastic.cc

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// neutron_hp -- source file
// J.P. Wellisch, Nov-1996
// A prototype of the low energy neutron transport model.
//
// 070523 bug fix for G4FPE_DEBUG on by A. Howard ( and T. Koi)
// 080319 Compilation warnings - gcc-4.3.0 fix by T. Koi
//
// P. Arce, June-2014 Conversion neutron_hp to particle_hp
//
#include "G4ParticleHPElastic.hh"
#include "G4SystemOfUnits.hh"
#include "G4ParticleHPElasticFS.hh"
#include "G4ParticleHPManager.hh"
#include "G4Threading.hh"

  G4ParticleHPElastic::G4ParticleHPElastic()
    :G4HadronicInteraction("NeutronHPElastic")
  ,theElastic(NULL)
  ,numEle(0)
  {
    overrideSuspension = false;
/*
    G4ParticleHPElasticFS * theFS = new G4ParticleHPElasticFS;
    if(!getenv("G4NEUTRONHPDATA")) 
       throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files.");
    dirName = getenv("G4NEUTRONHPDATA");
    G4String tString = "/Elastic";
    dirName = dirName + tString;
//    G4cout <<"G4ParticleHPElastic::G4ParticleHPElastic testit "<<dirName<<G4endl;
    numEle = G4Element::GetNumberOfElements();
    //theElastic = new G4ParticleHPChannel[numEle];
    //for (G4int i=0; i<numEle; i++)
    //{
    //  theElastic[i].Init((*(G4Element::GetElementTable()))[i], dirName);
    //  while(!theElastic[i].Register(theFS)) ;
    //}
    for ( G4int i = 0 ; i < numEle ; i++ ) 
    {
       theElastic.push_back( new G4ParticleHPChannel );
       (*theElastic[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
       while(!(*theElastic[i]).Register(theFS)) ;
    }
    delete theFS;
*/
    SetMinEnergy(0.*eV);
    SetMaxEnergy(20.*MeV);
  }
  
  G4ParticleHPElastic::~G4ParticleHPElastic()
  {
    //the vectror is shared among threads, only master deletes
    if ( ! G4Threading::IsWorkerThread() ) {
        //delete [] theElastic;
        if ( theElastic != NULL ) {
            for ( std::vector<G4ParticleHPChannel*>::iterator
                it = theElastic->begin() ; it != theElastic->end() ; it++ ) {
                delete *it;
            }
            theElastic->clear();
        }
    }
  }
  
  #include "G4ParticleHPThermalBoost.hh"
  
  G4HadFinalState * G4ParticleHPElastic::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& aNucleus )
  {

   //if ( numEle < (G4int)G4Element::GetNumberOfElements() ) addChannelForNewElement();

    G4ParticleHPManager::GetInstance()->OpenReactionWhiteBoard();
    const G4Material * theMaterial = aTrack.GetMaterial();
    G4int n = theMaterial->GetNumberOfElements();
    G4int index = theMaterial->GetElement(0)->GetIndex();
    if(n!=1)
    {
      G4int i;
      G4double* xSec = new G4double[n];
      G4double sum=0;
      const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
      G4double rWeight;    
      G4ParticleHPThermalBoost aThermalE;
      for (i=0; i<n; i++)
      {
        index = theMaterial->GetElement(i)->GetIndex();
        rWeight = NumAtomsPerVolume[i];
        //xSec[i] = theElastic[index].GetXsec(aThermalE.GetThermalEnergy(aTrack,
        xSec[i] = ((*theElastic)[index])->GetXsec(aThermalE.GetThermalEnergy(aTrack,
                                                           theMaterial->GetElement(i),
                       theMaterial->GetTemperature()));
        xSec[i] *= rWeight;
        sum+=xSec[i];
      }
      G4double random = G4UniformRand();
      G4double running = 0;
      for (i=0; i<n; i++)
      {
        running += xSec[i];
        index = theMaterial->GetElement(i)->GetIndex();
        //if(random<=running/sum) break;
        if( sum == 0 || random <= running/sum ) break;
      }
      delete [] xSec;
      // it is element-wise initialised.
    }
    //G4HadFinalState* finalState = theElastic[index].ApplyYourself(aTrack);
    G4HadFinalState* finalState = ((*theElastic)[index])->ApplyYourself(aTrack);
    if (overrideSuspension) finalState->SetStatusChange(isAlive);

    //Overwrite target parameters
    aNucleus.SetParameters(G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA(),G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargZ());
    const G4Element* target_element = (*G4Element::GetElementTable())[index];
    const G4Isotope* target_isotope=NULL;
    G4int iele = target_element->GetNumberOfIsotopes();
    for ( G4int j = 0 ; j != iele ; j++ ) { 
       target_isotope=target_element->GetIsotope( j );
       if ( target_isotope->GetN() == G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA() ) break; 
    }
    //G4cout << "Target Material of this reaction is " << theMaterial->GetName() << G4endl;
    //G4cout << "Target Element of this reaction is " << target_element->GetName() << G4endl;
    //G4cout << "Target Isotope of this reaction is " << target_isotope->GetName() << G4endl;
    aNucleus.SetIsotope( target_isotope );
    
    G4ParticleHPManager::GetInstance()->CloseReactionWhiteBoard();
    return finalState; 
  }

const std::pair<G4double, G4double> G4ParticleHPElastic::GetFatalEnergyCheckLevels() const
{
   //return std::pair<G4double, G4double>(10*perCent,10*GeV);
   return std::pair<G4double, G4double>(10*perCent,DBL_MAX);
}

/*
void G4ParticleHPElastic::addChannelForNewElement()
{
   G4ParticleHPElasticFS* theFS = new G4ParticleHPElasticFS;
   for ( G4int i = numEle ; i < (G4int)G4Element::GetNumberOfElements() ; i++ ) 
   {
      G4cout << "G4ParticleHPElastic Prepairing Data for the new element of " << (*(G4Element::GetElementTable()))[i]->GetName() << G4endl;
      theElastic.push_back( new G4ParticleHPChannel );
      (*theElastic[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
      while(!(*theElastic[i]).Register(theFS)) ;
   }
   delete theFS;
   numEle = (G4int)G4Element::GetNumberOfElements();
}
*/

G4int G4ParticleHPElastic::GetVerboseLevel() const 
{
   return G4ParticleHPManager::GetInstance()->GetVerboseLevel();
}
void G4ParticleHPElastic::SetVerboseLevel( G4int newValue ) 
{
   G4ParticleHPManager::GetInstance()->SetVerboseLevel(newValue);
}
void G4ParticleHPElastic::BuildPhysicsTable(const G4ParticleDefinition&)
{

   G4ParticleHPManager* hpmanager = G4ParticleHPManager::GetInstance();

   theElastic = hpmanager->GetElasticFinalStates();

   if ( G4Threading::IsMasterThread() ) {

      if ( theElastic == NULL ) theElastic = new std::vector<G4ParticleHPChannel*>;

      if ( numEle == (G4int)G4Element::GetNumberOfElements() ) return;

      if ( theElastic->size() == G4Element::GetNumberOfElements() ) {
         numEle = G4Element::GetNumberOfElements();
         return;
      }

      G4ParticleHPElasticFS * theFS = new G4ParticleHPElasticFS;
      if(!getenv("G4NEUTRONHPDATA")) 
         throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files.");
      dirName = getenv("G4NEUTRONHPDATA");
      G4String tString = "/Elastic";
      dirName = dirName + tString;
      for ( G4int i = numEle ; i < (G4int)G4Element::GetNumberOfElements() ; i++ ) {
         theElastic->push_back( new G4ParticleHPChannel );
         ((*theElastic)[i])->Init((*(G4Element::GetElementTable()))[i], dirName);
         //while(!((*theElastic)[i])->Register(theFS)) ;
         ((*theElastic)[i])->Register(theFS) ;
      }
      delete theFS;
      hpmanager->RegisterElasticFinalStates( theElastic );

   }
   numEle = G4Element::GetNumberOfElements();
}
void G4ParticleHPElastic::ModelDescription(std::ostream& outFile) const
{
   outFile << "High Precision model based on Evaluated Nuclear Data Files (ENDF) for inelastic reaction of neutrons below 20MeV\n";
}