Gabriele Cosmo
124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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//
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// P. Arce, June-2014 Conversion neutron_hp to particle_hp
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//
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#ifndef G4ParticleHPArbitaryTab_h
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#define G4ParticleHPArbitaryTab_h 1
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#include <fstream>
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "globals.hh"
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#include "G4ios.hh"
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#include "Randomize.hh"
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#include "G4ParticleHPVector.hh"
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#include "G4VParticleHPEDis.hh"
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#include "G4InterpolationManager.hh"
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// we will need a List of these .... one per term.
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class G4ParticleHPArbitaryTab : public G4VParticleHPEDis
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{
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public:
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G4ParticleHPArbitaryTab()
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{
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theDistFunc = 0;
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nDistFunc = 0;
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}
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~G4ParticleHPArbitaryTab()
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{
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if(theDistFunc!=0) delete [] theDistFunc;
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}
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inline void Init(std::istream & theData)
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{
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G4int i;
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theFractionalProb.Init(theData, CLHEP::eV);
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theData >> nDistFunc; // = number of incoming n energy points
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theDistFunc = new G4ParticleHPVector [nDistFunc];
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theManager.Init(theData);
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G4double currentEnergy;
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for(i=0; i<nDistFunc; i++)
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{
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theData >> currentEnergy;
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theDistFunc[i].SetLabel(currentEnergy*CLHEP::eV);
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theDistFunc[i].Init(theData, CLHEP::eV);
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theDistFunc[i].IntegrateAndNormalise();
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//************************************************************************
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//EMendoza:
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//ThinOut() assumes that the data is linear-linear, what is false:
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//theDistFunc[i].ThinOut(0.02); // @@@ optimization to be finished.
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//************************************************************************
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}
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//************************************************************************
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//EMendoza:
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//Here we calculate the thresholds for the 2D sampling:
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for(i=0; i<nDistFunc; i++){
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G4int np=theDistFunc[i].GetVectorLength();
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theLowThreshold[i]=theDistFunc[i].GetEnergy(0);
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theHighThreshold[i]=theDistFunc[i].GetEnergy(np-1);
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for(G4int j=0;j<np-1;j++){
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if(theDistFunc[i].GetXsec(j+1)>1.e-20){
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theLowThreshold[i]=theDistFunc[i].GetEnergy(j);
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break;
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}
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}
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for(G4int j=1;j<np;j++){
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if(theDistFunc[i].GetXsec(j-1)>1.e-20){
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theHighThreshold[i]=theDistFunc[i].GetEnergy(j);
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}
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}
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}
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//************************************************************************
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}
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inline G4double GetFractionalProbability(G4double anEnergy)
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{
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return theFractionalProb.GetY(anEnergy);
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}
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G4double Sample(G4double anEnergy) ;
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private:
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G4ParticleHPVector theFractionalProb;
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G4int nDistFunc;
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G4InterpolationManager theManager; // knows the interpolation between stores
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G4ParticleHPVector * theDistFunc; // one per incoming energy
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G4ParticleHPVector theBuffer;
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//************************************************************************
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//EMendoza:
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G4double theLowThreshold[1000];
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G4double theHighThreshold[1000];
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//************************************************************************
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};
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#endif
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