G4EnergyRangeManager.cc

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// $Id: G4EnergyRangeManager.cc 83772 2014-09-15 07:18:08Z gcosmo $
//
 // Hadronic Process: Energy Range Manager
 // original by H.P. Wellisch
 // modified by J.L. Chuma, TRIUMF, 22-Nov-1996
 // Last modified: 24-Mar-1997
 // fix in the counter-hndling: H.P. Wellisch 04-Apr-97
 // throw an exception if no model found:  J.L. Chuma  04-Apr-97
 
#include "G4EnergyRangeManager.hh"
#include "Randomize.hh"
#include "G4HadronicException.hh"

G4EnergyRangeManager::G4EnergyRangeManager()
 : theHadronicInteractionCounter(0)
{}

G4EnergyRangeManager::~G4EnergyRangeManager()
{}

G4EnergyRangeManager::G4EnergyRangeManager(const G4EnergyRangeManager& right)
{
  if (this != &right) {
    theHadronicInteractionCounter = right.theHadronicInteractionCounter;
    theHadronicInteraction = right.theHadronicInteraction;
  }
}
 
G4EnergyRangeManager& G4EnergyRangeManager::operator=(
   const G4EnergyRangeManager& right)
{
  if (this != &right) {
    theHadronicInteractionCounter = right.theHadronicInteractionCounter;
    theHadronicInteraction = right.theHadronicInteraction;
  }
  return *this;
}

void G4EnergyRangeManager::RegisterMe(G4HadronicInteraction* a)
{
  if(!a) { return; }
  if(0 < theHadronicInteractionCounter) {
    for(G4int i=0; i<theHadronicInteractionCounter; ++i) {
      if(a == theHadronicInteraction[i]) { return; }
    }
  }
  theHadronicInteraction.push_back(a);
  ++theHadronicInteractionCounter;
}


G4HadronicInteraction*
G4EnergyRangeManager::GetHadronicInteraction(const G4HadProjectile & aHadProjectile, 
                                             G4Nucleus & aTargetNucleus,
                                             const G4Material* aMaterial,
                                             const G4Element* anElement) const
{
  if(0 == theHadronicInteractionCounter) {
    throw G4HadronicException(__FILE__, __LINE__,
                              "GetHadronicInteraction: NO MODELS STORED");
  }

  G4double kineticEnergy = aHadProjectile.GetKineticEnergy();
  // For ions, get kinetic energy per nucleon
  if ( aHadProjectile.GetDefinition()->GetBaryonNumber() > 1.5 ) {
    kineticEnergy /= aHadProjectile.GetDefinition()->GetBaryonNumber();
  }

  G4int cou = 0, memory = 0, memor2 = 0;
  G4double emi1 = 0.0, ema1 = 0.0, emi2 = 0.0, ema2 = 0.0;

  for (G4int i = 0; i<theHadronicInteractionCounter; ++i) {
    if ( theHadronicInteraction[i]->IsApplicable( aHadProjectile, aTargetNucleus ) ) {
      G4double low  = theHadronicInteraction[i]->GetMinEnergy( aMaterial, anElement );
      // Work-around for particles with 0 kinetic energy, which still
      // require a model to return a ParticleChange
      //if (low == 0.) low = -DBL_MIN;
      G4double high = theHadronicInteraction[i]->GetMaxEnergy( aMaterial, anElement );
      if (low <= kineticEnergy && high > kineticEnergy) {
        ++cou;
        emi2 = emi1;
        ema2 = ema1;
        emi1 = low;
        ema1 = high;
        memor2 = memory;
        memory = i;
      }
    }
  }

  G4int mem = -1;
  G4double rand;
  switch (cou) {
    case 0:
       G4cout<<"G4EnergyRangeManager:GetHadronicInteraction: counter="
             <<theHadronicInteractionCounter<<", Ek="
             <<kineticEnergy<<", Material = "<<aMaterial->GetName()
             <<", Element = "
             <<anElement->GetName()<<G4endl;
       for( G4int j=0; j<theHadronicInteractionCounter; ++j)
       {
         G4HadronicInteraction* HInt=theHadronicInteraction[j];
         G4cout<<"*"<<j<<"* low=" <<HInt->GetMinEnergy(aMaterial,anElement)
               <<", high="<<HInt->GetMaxEnergy(aMaterial,anElement)<<G4endl;
       }
       throw G4HadronicException(__FILE__, __LINE__,
          "GetHadronicInteraction: No Model found");
       return 0;
    case 1:
       mem = memory;
       break;
    case 2:
       if( (emi2<=emi1 && ema2>=ema1) || (emi2>=emi1 && ema2<=ema1) )
       {
         G4cout<<"G4EnergyRangeManager:GetHadronicInteraction: counter="
               <<theHadronicInteractionCounter<<", Ek="
               <<kineticEnergy<<", Material = "<<aMaterial->GetName()
               <<", Element = "
               <<anElement->GetName()<<G4endl;
         for( G4int j=0; j<theHadronicInteractionCounter; ++j)
         {
           G4HadronicInteraction* HInt=theHadronicInteraction[j];
           G4cout<<"*"<<j<<"* low=" <<HInt->GetMinEnergy(aMaterial,anElement)
               <<", high="<<HInt->GetMaxEnergy(aMaterial,anElement)<<G4endl;
         }
         throw G4HadronicException(__FILE__, __LINE__,
         "GetHadronicInteraction: Energy ranges of two models fully overlapping");
       }
       rand = G4UniformRand();
       if( emi1 < emi2 )
       {
         if( (ema1-kineticEnergy) < rand*(ema1-emi2) ) {
           mem = memor2;
         } else {
           mem = memory;
         }
       } else {
         if( (ema2-kineticEnergy) < rand*(ema2-emi1) ) {
           mem = memory;
         } else {
           mem = memor2;
         }
       }
       break;
    default:
      throw G4HadronicException(__FILE__, __LINE__,
      "GetHadronicInteraction: More than two competing models in this energy range");
  }

  return theHadronicInteraction[mem];
} 


G4HadronicInteraction*
G4EnergyRangeManager::GetHadronicInteraction(const G4double kineticEnergy,
                                             const G4Material* aMaterial,
                                             const G4Element* anElement) const
{
  if(0 == theHadronicInteractionCounter) {
    throw G4HadronicException(__FILE__, __LINE__,
                              "GetHadronicInteraction: NO MODELS STORED");
  } 
  G4int cou = 0, memory = 0, memor2 = 0;
  G4double emi1 = 0.0, ema1 = 0.0, emi2 = 0.0, ema2 = 0.0;

  for (G4int i = 0; i<theHadronicInteractionCounter; ++i) {
      G4double low  = theHadronicInteraction[i]->GetMinEnergy( aMaterial, anElement );
    // Work-around for particles with 0 kinetic energy, which still
    // require a model to return a ParticleChange
    //if (low == 0.) low = -DBL_MIN;
    G4double high = theHadronicInteraction[i]->GetMaxEnergy( aMaterial, anElement );
    if (low <= kineticEnergy && high > kineticEnergy) {
      ++cou;
      emi2 = emi1;
      ema2 = ema1;
      emi1 = low;
      ema1 = high;
      memor2 = memory;
      memory = i;
    }
  }

  G4int mem = -1;
  G4double rand;
  switch (cou) {
    case 0:
       G4cout<<"G4EnergyRangeManager:GetHadronicInteraction: counter="
             <<theHadronicInteractionCounter<<", Ek="
             <<kineticEnergy<<", Material = "<<aMaterial->GetName()
             <<", Element = "
             <<anElement->GetName()<<G4endl;
       for( G4int j=0; j<theHadronicInteractionCounter; ++j)
       {
         G4HadronicInteraction* HInt=theHadronicInteraction[j];
         G4cout<<"*"<<j<<"* low=" <<HInt->GetMinEnergy(aMaterial,anElement)
               <<", high="<<HInt->GetMaxEnergy(aMaterial,anElement)<<G4endl;
       }
       throw G4HadronicException(__FILE__, __LINE__,
          "GetHadronicInteraction: No Model found");
       return 0;
    case 1:
       mem = memory;
       break;
    case 2:
       if( (emi2<=emi1 && ema2>=ema1) || (emi2>=emi1 && ema2<=ema1) )
       {
         G4cout<<"G4EnergyRangeManager:GetHadronicInteraction: counter="
               <<theHadronicInteractionCounter<<", Ek="
               <<kineticEnergy<<", Material = "<<aMaterial->GetName()
               <<", Element = "
               <<anElement->GetName()<<G4endl;
         for( G4int j=0; j<theHadronicInteractionCounter; ++j)
         {
           G4HadronicInteraction* HInt=theHadronicInteraction[j];
           G4cout<<"*"<<j<<"* low=" <<HInt->GetMinEnergy(aMaterial,anElement)
               <<", high="<<HInt->GetMaxEnergy(aMaterial,anElement)<<G4endl;
         }
         throw G4HadronicException(__FILE__, __LINE__,
         "GetHadronicInteraction: Energy ranges of two models fully overlapping");
       }
       rand = G4UniformRand();
       if( emi1 < emi2 )
       {
         if( (ema1-kineticEnergy) < rand*(ema1-emi2) ) {
           mem = memor2;
         } else {
           mem = memory;
         }
       } else {
         if( (ema2-kineticEnergy) < rand*(ema2-emi1) ) {
           mem = memory;
         } else {
           mem = memor2;
         }
       }
       break;
    default:
      throw G4HadronicException(__FILE__, __LINE__,
      "GetHadronicInteraction: More than two competing models in this energy range");
  }

  return theHadronicInteraction[mem];
} 

std::vector<G4HadronicInteraction*>& 
G4EnergyRangeManager::GetHadronicInteractionList()
{
  return theHadronicInteraction;
}

#include "G4SystemOfUnits.hh"
void G4EnergyRangeManager::Dump( G4int verbose )
{
  G4cout << "G4EnergyRangeManager " << this << G4endl;
  for (G4int i = 0 ; i < theHadronicInteractionCounter; i++) {
    G4cout << "   HadronicModel " << i <<":"
           << theHadronicInteraction[i]->GetModelName() << G4endl;
    if (verbose > 0) {
      G4cout << "      Minimum Energy " 
             << theHadronicInteraction[i]->GetMinEnergy()/GeV << " [GeV], "
             << "Maximum Energy " 
             << theHadronicInteraction[i]->GetMaxEnergy()/GeV << " [GeV]"
             << G4endl;
    }
  }
}

void
G4EnergyRangeManager::BuildPhysicsTable(const G4ParticleDefinition& aParticleType)
{
   for ( std::vector<G4HadronicInteraction*>::iterator 
         it = theHadronicInteraction.begin() ; it != theHadronicInteraction.end() ; it++ ) {
      (*it)->BuildPhysicsTable( aParticleType );
   }
}
 /* end of file */