G4NeutronHPEnAngCorrelation.hh

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#ifndef G4NeutronHPEnAngCorrelation_h
#define G4NeutronHPEnAngCorrelation_h 1

#include "globals.hh"
#include "G4NeutronHPVector.hh"
#include "Randomize.hh"
#include "G4ios.hh"
#include <fstream>
#include "globals.hh"
#include "G4NeutronHPProduct.hh"
#include "G4ReactionProduct.hh"

#include "G4Cache.hh"

class G4NeutronHPEnAngCorrelation
{

   struct toBeCached {
      G4ReactionProduct* theNeutron;
      G4ReactionProduct* theTarget;
      G4double theTotalMeanEnergy;
      toBeCached() : theNeutron(NULL),theTarget(NULL), theTotalMeanEnergy(-1.0) {};
   };

  public:
  G4NeutronHPEnAngCorrelation()
  {
    theProducts = 0;
    inCharge = false;
    toBeCached val;
    fCache.Put( val );
    fCache.Get().theTotalMeanEnergy = -1.;
  }
  ~G4NeutronHPEnAngCorrelation()
  {
    if(theProducts!=0) delete [] theProducts;
  }
  
  inline void Init(std::istream & aDataFile)
  {
    inCharge = true;
    aDataFile>>targetMass>>frameFlag>>nProducts;
    theProducts = new G4NeutronHPProduct[nProducts];
    for(G4int i=0; i<nProducts; i++)
    {
      theProducts[i].Init(aDataFile);
    }
  }
  
  G4ReactionProduct * SampleOne(G4double anEnergy);

  G4ReactionProductVector * Sample(G4double anEnergy);
  
  inline void SetTarget(G4ReactionProduct & aTarget)
  {
    fCache.Get().theTarget = &aTarget;
    for(G4int i=0;i<nProducts;i++)theProducts[i].SetTarget(fCache.Get().theTarget);
  }
  
  inline void SetNeutron(G4ReactionProduct & aNeutron)
  {
    fCache.Get().theNeutron = &aNeutron;
    for(G4int i=0;i<nProducts;i++)theProducts[i].SetNeutron(fCache.Get().theNeutron);
  }
  
  inline G4bool InCharge()
  {
    return inCharge;
  }
  
  inline G4double GetTargetMass() { return targetMass; }
  
  G4double GetTotalMeanEnergy()
  {
     // cashed in 'sample' call
    return fCache.Get().theTotalMeanEnergy; 
  }
  
  private:
   
  // data members
  
  G4double targetMass;
  G4int frameFlag; // =1: Target rest frame; =2: CMS system; incident always in lab
  G4int nProducts;
  G4NeutronHPProduct * theProducts;
  G4bool inCharge;
    
  // Utility quantities
  
  //G4ReactionProduct theTarget;
  //G4ReactionProduct theNeutron;
  
  // cashed values
  
  //G4double theTotalMeanEnergy;
  private:
     G4Cache<toBeCached> fCache;
  
};

#endif