146 lines
5.2 KiB
C++
146 lines
5.2 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// 05-11-21 NeutronHP or Low Energy Parameterization Models
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// Implemented by T. Koi (SLAC/SCCS)
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// If NeutronHP data do not available for an element, then Low Energy
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// Parameterization models handle the interactions of the element.
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//
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// neutron_hp -- source file
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// J.P. Wellisch, Nov-1996
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// A prototype of the low energy neutron transport model.
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//
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#include "G4NeutronHPorLFission.hh"
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#include "G4NeutronHPFissionFS.hh"
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G4NeutronHPorLFission::G4NeutronHPorLFission()
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{
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SetMinEnergy(0.*eV);
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SetMaxEnergy(20.*MeV);
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if( !getenv("NeutronHPCrossSections") )
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throw G4HadronicException(__FILE__, __LINE__, "Please setenv NeutronHPCrossSections to point to the neutron cross-section files.");
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dirName = getenv("NeutronHPCrossSections");
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G4String tString = "/Fission/";
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dirName = dirName + tString;
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// G4cout <<"G4NeutronHPorLFission::G4NeutronHPorLFission testit "<<dirName<<G4endl;
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unavailable_elements.clear();
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numEle = G4Element::GetNumberOfElements();
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theFission = new G4NeutronHPChannel[numEle];
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for ( G4int i = 0; i < numEle ; i++)
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{
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if ( (*(G4Element::GetElementTable()))[i]-> GetZ() > 89 )
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{
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theFission[i].Init((*(G4Element::GetElementTable()))[i], dirName);
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try { while(!theFission[i].Register(&theFS)); }
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catch ( G4HadronicException )
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{
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unavailable_elements.insert ( (*(G4Element::GetElementTable()))[i]->GetName() );
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}
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}
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}
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if ( unavailable_elements.size() > 0 )
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{
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std::set< G4String>::iterator it;
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G4cout << "HP Fission data are not available for thess elements "<< G4endl;
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for ( it = unavailable_elements.begin() ; it != unavailable_elements.end() ; it++ )
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{
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G4cout << *it << G4endl;
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}
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G4cout << "Low Energy Parameterization Models will be used."<< G4endl;
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}
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createXSectionDataSet();
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}
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G4NeutronHPorLFission::~G4NeutronHPorLFission()
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{
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delete [] theFission;
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delete theDataSet;
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}
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#include "G4NeutronHPThermalBoost.hh"
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G4HadFinalState * G4NeutronHPorLFission::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& )
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{
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const G4Material * theMaterial = aTrack.GetMaterial();
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G4int n = theMaterial->GetNumberOfElements();
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G4int index = theMaterial->GetElement(0)->GetIndex();
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if(n!=1)
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{
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G4int i;
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xSec = new G4double[n];
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G4double sum=0;
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const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
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G4double rWeight;
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G4NeutronHPThermalBoost aThermalE;
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for (i=0; i<n; i++)
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{
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index = theMaterial->GetElement(i)->GetIndex();
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rWeight = NumAtomsPerVolume[i];
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G4double x = aThermalE.GetThermalEnergy(aTrack, theMaterial->GetElement(i), theMaterial->GetTemperature());
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//xSec[i] = theFission[index].GetXsec(aThermalE.GetThermalEnergy(aTrack,
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// theMaterial->GetElement(i),
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// theMaterial->GetTemperature()));
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xSec[i] = theFission[index].GetXsec(x);
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xSec[i] *= rWeight;
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sum+=xSec[i];
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}
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G4double random = G4UniformRand();
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G4double running = 0;
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for (i=0; i<n; i++)
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{
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running += xSec[i];
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index = theMaterial->GetElement(i)->GetIndex();
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if(random<=running/sum) break;
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}
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delete [] xSec;
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// it is element-wise initialised.
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}
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return theFission[index].ApplyYourself(aTrack);
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}
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G4bool G4NeutronHPorLFission::IsThisElementOK( G4String name )
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{
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if ( unavailable_elements.find( name ) == unavailable_elements.end() )
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return TRUE;
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else
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return FALSE;
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}
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void G4NeutronHPorLFission::createXSectionDataSet()
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{
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theDataSet = new G4NeutronHPorLFissionData ( theFission , &unavailable_elements );
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}
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