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G4NeutronHPElastic.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 // 080319 Compilation warnings - gcc-4.3.0 fix by T. Koi
32 //
33 #include "G4NeutronHPElastic.hh"
34 #include "G4SystemOfUnits.hh"
35 #include "G4NeutronHPElasticFS.hh"
36 #include "G4NeutronHPManager.hh"
37 
39  :G4HadronicInteraction("NeutronHPElastic")
40  {
41  overrideSuspension = false;
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 = "/Elastic";
47  dirName = dirName + tString;
48 // G4cout <<"G4NeutronHPElastic::G4NeutronHPElastic testit "<<dirName<<G4endl;
50  //theElastic = new G4NeutronHPChannel[numEle];
51  //for (G4int i=0; i<numEle; i++)
52  //{
53  // theElastic[i].Init((*(G4Element::GetElementTable()))[i], dirName);
54  // while(!theElastic[i].Register(theFS)) ;
55  //}
56  for ( G4int i = 0 ; i < numEle ; i++ )
57  {
58  theElastic.push_back( new G4NeutronHPChannel );
59  (*theElastic[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
60  while(!(*theElastic[i]).Register(theFS)) ;
61  }
62  delete theFS;
63  SetMinEnergy(0.*eV);
64  SetMaxEnergy(20.*MeV);
65  }
66 
68  {
69  //delete [] theElastic;
70  for ( std::vector<G4NeutronHPChannel*>::iterator
71  it = theElastic.begin() ; it != theElastic.end() ; it++ )
72  {
73  delete *it;
74  }
75  theElastic.clear();
76  }
77 
79 
81  {
82 
83  if ( numEle < (G4int)G4Element::GetNumberOfElements() ) addChannelForNewElement();
84 
86  const G4Material * theMaterial = aTrack.GetMaterial();
87  G4int n = theMaterial->GetNumberOfElements();
88  G4int index = theMaterial->GetElement(0)->GetIndex();
89  if(n!=1)
90  {
91  G4int i;
92  xSec = new G4double[n];
93  G4double sum=0;
94  const G4double * NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
95  G4double rWeight;
96  G4NeutronHPThermalBoost aThermalE;
97  for (i=0; i<n; i++)
98  {
99  index = theMaterial->GetElement(i)->GetIndex();
100  rWeight = NumAtomsPerVolume[i];
101  //xSec[i] = theElastic[index].GetXsec(aThermalE.GetThermalEnergy(aTrack,
102  xSec[i] = (*theElastic[index]).GetXsec(aThermalE.GetThermalEnergy(aTrack,
103  theMaterial->GetElement(i),
104  theMaterial->GetTemperature()));
105  xSec[i] *= rWeight;
106  sum+=xSec[i];
107  }
108  G4double random = G4UniformRand();
109  G4double running = 0;
110  for (i=0; i<n; i++)
111  {
112  running += xSec[i];
113  index = theMaterial->GetElement(i)->GetIndex();
114  //if(random<=running/sum) break;
115  if( sum == 0 || random <= running/sum ) break;
116  }
117  delete [] xSec;
118  // it is element-wise initialised.
119  }
120  //G4HadFinalState* finalState = theElastic[index].ApplyYourself(aTrack);
121  G4HadFinalState* finalState = (*theElastic[index]).ApplyYourself(aTrack);
122  if (overrideSuspension) finalState->SetStatusChange(isAlive);
123  aNucleus.SetParameters(G4NeutronHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA(),G4NeutronHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargZ());
125  return finalState;
126  }
127 
128 const std::pair<G4double, G4double> G4NeutronHPElastic::GetFatalEnergyCheckLevels() const
129 {
130  //return std::pair<G4double, G4double>(10*perCent,10*GeV);
131  return std::pair<G4double, G4double>(10*perCent,DBL_MAX);
132 }
133 
134 void G4NeutronHPElastic::addChannelForNewElement()
135 {
137  for ( G4int i = numEle ; i < (G4int)G4Element::GetNumberOfElements() ; i++ )
138  {
139  G4cout << "G4NeutronHPElastic Prepairing Data for the new element of " << (*(G4Element::GetElementTable()))[i]->GetName() << G4endl;
140  theElastic.push_back( new G4NeutronHPChannel );
141  (*theElastic[i]).Init((*(G4Element::GetElementTable()))[i], dirName);
142  while(!(*theElastic[i]).Register(theFS)) ;
143  }
144  delete theFS;
146 }