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G4NeutronHPFission.cc
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25 //
26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron transport model.
29 //
30 // 070523 bug fix for G4FPE_DEBUG on by A. Howard ( and T. Koi)
31 // 08-08-06 delete unnecessary and harmed declaration; Bug Report[857]
32 //
33 #include "G4NeutronHPFission.hh"
34 #include "G4SystemOfUnits.hh"
35 
36 #include "G4NeutronHPManager.hh"
37 
39  :G4HadronicInteraction("NeutronHPFission")
40  {
41  SetMinEnergy( 0.0 );
42  SetMaxEnergy( 20.*MeV );
43  if(!getenv("G4NEUTRONHPDATA"))
44  throw G4HadronicException(__FILE__, __LINE__, "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files.");
45  dirName = getenv("G4NEUTRONHPDATA");
46  G4String tString = "/Fission";
47  dirName = dirName + tString;
49  //theFission = new G4NeutronHPChannel[numEle];
50 
51  //for (G4int i=0; i<numEle; i++)
52  //{
53  //if((*(G4Element::GetElementTable()))[i]->GetZ()>89)
54  // if((*(G4Element::GetElementTable()))[i]->GetZ()>87) //TK modified for ENDF-VII
55  // {
56  // theFission[i].Init((*(G4Element::GetElementTable()))[i], dirName);
57  // theFission[i].Register(&theFS);
58  // }
59  //}
60 
61  for ( G4int i = 0 ; i < numEle ; i++ )
62  {
63  theFission.push_back( new G4NeutronHPChannel );
64  if((*(G4Element::GetElementTable()))[i]->GetZ()>87) //TK modified for ENDF-VII
65  {
66  (*theFission[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
67  (*theFission[i]).Register(&theFS);
68  }
69  }
70  }
71 
73  {
74  //delete [] theFission;
75  for ( std::vector<G4NeutronHPChannel*>::iterator
76  it = theFission.begin() ; it != theFission.end() ; it++ )
77  {
78  delete *it;
79  }
80  theFission.clear();
81  }
82 
85  {
86 
87  if ( numEle < (G4int)G4Element::GetNumberOfElements() ) addChannelForNewElement();
88 
90  const G4Material * theMaterial = aTrack.GetMaterial();
91  G4int n = theMaterial->GetNumberOfElements();
92  G4int index = theMaterial->GetElement(0)->GetIndex();
93  if(n!=1)
94  {
95  xSec = new G4double[n];
96  G4double sum=0;
97  G4int i;
98  const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
99  G4double rWeight;
100  G4NeutronHPThermalBoost aThermalE;
101  for (i=0; i<n; i++)
102  {
103  index = theMaterial->GetElement(i)->GetIndex();
104  rWeight = NumAtomsPerVolume[i];
105  xSec[i] = (*theFission[index]).GetXsec(aThermalE.GetThermalEnergy(aTrack,
106  theMaterial->GetElement(i),
107  theMaterial->GetTemperature()));
108  xSec[i] *= rWeight;
109  sum+=xSec[i];
110  }
111  G4double random = G4UniformRand();
112  G4double running = 0;
113  for (i=0; i<n; i++)
114  {
115  running += xSec[i];
116  index = theMaterial->GetElement(i)->GetIndex();
117  //if(random<=running/sum) break;
118  if( sum == 0 || random <= running/sum ) break;
119  }
120  delete [] xSec;
121  }
122  //return theFission[index].ApplyYourself(aTrack);
123  G4HadFinalState* result = (*theFission[index]).ApplyYourself(aTrack);
124  aNucleus.SetParameters(G4NeutronHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA(),G4NeutronHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargZ());
126  return result;
127  }
128 
129 const std::pair<G4double, G4double> G4NeutronHPFission::GetFatalEnergyCheckLevels() const
130 {
131  // max energy non-conservation is mass of heavy nucleus
132  //return std::pair<G4double, G4double>(5*perCent,250*GeV);
133  return std::pair<G4double, G4double>(5*perCent,DBL_MAX);
134 }
135 
136 
137 
138 void G4NeutronHPFission::addChannelForNewElement()
139 {
140  for ( G4int i = numEle ; i < (G4int)G4Element::GetNumberOfElements() ; i++ )
141  {
142  theFission.push_back( new G4NeutronHPChannel );
143  if ( (*(G4Element::GetElementTable()))[i]->GetZ() > 87 ) //TK modified for ENDF-VII
144  {
145  G4cout << "G4NeutronHPFission Prepairing Data for the new element of " << (*(G4Element::GetElementTable()))[i]->GetName() << G4endl;
146  (*theFission[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
147  (*theFission[i]).Register(&theFS);
148  }
149  }
151 }