| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
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 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
34 //
35 #include "G4ParticleHPFission.hh"
36
37 #include "G4ParticleHPFissionFS.hh"
38 #include "G4ParticleHPManager.hh"
39 #include "G4ParticleHPThermalBoost.hh"
40 #include "G4SystemOfUnits.hh"
41 #include "G4Threading.hh"
42
43 G4ParticleHPFission::G4ParticleHPFission() : G4HadronicInteraction("NeutronHPFission")
44 {
45 SetMinEnergy(0.0);
46 SetMaxEnergy(20. * MeV);
47 }
48
49 G4ParticleHPFission::~G4ParticleHPFission()
50 {
51 // Vector is shared, only master deletes it
52 // delete [] theFission;
53 if (!G4Threading::IsMasterThread()) {
54 if (theFission != nullptr) {
55 for (auto it = theFission->cbegin(); it != theFission->cend(); ++it) {
56 delete *it;
57 }
58 theFission->clear();
59 }
60 }
61 }
62
63 G4HadFinalState* G4ParticleHPFission::ApplyYourself(const G4HadProjectile& aTrack,
64 G4Nucleus& aNucleus)
65 {
66 G4ParticleHPManager::GetInstance()->OpenReactionWhiteBoard();
67 const G4Material* theMaterial = aTrack.GetMaterial();
68 auto n = (G4int)theMaterial->GetNumberOfElements();
69 std::size_t index = theMaterial->GetElement(0)->GetIndex();
70 if (n != 1) {
71 auto xSec = new G4double[n];
72 G4double sum = 0;
73 G4int i;
74 const G4double* NumAtomsPerVolume = theMaterial->GetVecNbOfAtomsPerVolume();
75 G4double rWeight;
76 G4ParticleHPThermalBoost aThermalE;
77 for (i = 0; i < n; ++i) {
78 index = theMaterial->GetElement(i)->GetIndex();
79 rWeight = NumAtomsPerVolume[i];
80 xSec[i] = ((*theFission)[index])
81 ->GetXsec(aThermalE.GetThermalEnergy(aTrack, theMaterial->GetElement(i),
82 theMaterial->GetTemperature()));
83 xSec[i] *= rWeight;
84 sum += xSec[i];
85 }
86 G4double random = G4UniformRand();
87 G4double running = 0;
88 for (i = 0; i < n; ++i) {
89 running += xSec[i];
90 index = theMaterial->GetElement(i)->GetIndex();
91 // if(random<=running/sum) break;
92 if (sum == 0 || random <= running / sum) break;
93 }
94 delete[] xSec;
95 }
96 // return theFission[index].ApplyYourself(aTrack); //-2:Marker for Fission
97 G4HadFinalState* result = ((*theFission)[index])->ApplyYourself(aTrack, -2);
98
99 // Overwrite target parameters
100 aNucleus.SetParameters(G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA(),
101 G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargZ());
102 const G4Element* target_element = (*G4Element::GetElementTable())[index];
103 const G4Isotope* target_isotope = nullptr;
104 auto iele = (G4int)target_element->GetNumberOfIsotopes();
105 for (G4int j = 0; j != iele; ++j) {
106 target_isotope = target_element->GetIsotope(j);
107 if (target_isotope->GetN()
108 == G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->GetTargA())
109 break;
110 }
111 aNucleus.SetIsotope(target_isotope);
112
113 G4ParticleHPManager::GetInstance()->CloseReactionWhiteBoard();
114 return result;
115 }
116
117 const std::pair<G4double, G4double> G4ParticleHPFission::GetFatalEnergyCheckLevels() const
118 {
119 // max energy non-conservation is mass of heavy nucleus
120 return std::pair<G4double, G4double>(10.0 * perCent, 350.0 * CLHEP::GeV);
121 }
122
123 G4int G4ParticleHPFission::GetVerboseLevel() const
124 {
125 return G4ParticleHPManager::GetInstance()->GetVerboseLevel();
126 }
127
128 void G4ParticleHPFission::SetVerboseLevel(G4int newValue)
129 {
130 G4ParticleHPManager::GetInstance()->SetVerboseLevel(newValue);
131 }
132
133 void G4ParticleHPFission::BuildPhysicsTable(const G4ParticleDefinition&)
134 {
135 G4ParticleHPManager* hpmanager = G4ParticleHPManager::GetInstance();
136
137 theFission = hpmanager->GetFissionFinalStates();
138
139 if (G4Threading::IsMasterThread()) {
140 if (theFission == nullptr) theFission = new std::vector<G4ParticleHPChannel*>;
141
142 if (numEle == (G4int)G4Element::GetNumberOfElements()) return;
143
144 if (theFission->size() == G4Element::GetNumberOfElements()) {
145 numEle = (G4int)G4Element::GetNumberOfElements();
146 return;
147 }
148
149 if (G4FindDataDir("G4NEUTRONHPDATA") == nullptr)
150 throw G4HadronicException(
151 __FILE__, __LINE__,
152 "Please setenv G4NEUTRONHPDATA to point to the neutron cross-section files.");
153 dirName = G4FindDataDir("G4NEUTRONHPDATA");
154 G4String tString = "/Fission";
155 dirName = dirName + tString;
156
157 for (G4int i = numEle; i < (G4int)G4Element::GetNumberOfElements(); ++i) {
158 theFission->push_back(new G4ParticleHPChannel);
159 if ((*(G4Element::GetElementTable()))[i]->GetZ() > 87) { // TK modified for ENDF-VII
160 ((*theFission)[i])->Init((*(G4Element::GetElementTable()))[i], dirName);
161 ((*theFission)[i])->Register(new G4ParticleHPFissionFS);
162 }
163 }
164 hpmanager->RegisterFissionFinalStates(theFission);
165 }
166 numEle = (G4int)G4Element::GetNumberOfElements();
167 }
168
169 void G4ParticleHPFission::ModelDescription(std::ostream& outFile) const
170 {
171 outFile << "High Precision model based on Evaluated Nuclear Data Files (ENDF)\n"
172 << "for induced fission reaction of neutrons below 20MeV\n";
173 }
174