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25 //
26 // Class Description
27 // Cross-section data set for a high precision (based on JENDL_HE evaluated data
28 // libraries) description of elastic scattering 20 MeV ~ 3 GeV;
29 // Class Description - End
30
31 // 15-Nov-06 First Implementation is done by T. Koi (SLAC/SCCS)
32 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
33 //
34 #include "G4ParticleHPJENDLHEData.hh"
35
36 #include "G4ElementTable.hh"
37 #include "G4ParticleHPData.hh"
38 #include "G4PhysicsFreeVector.hh"
39 #include "G4Pow.hh"
40 #include "G4SystemOfUnits.hh"
41
42 G4bool G4ParticleHPJENDLHEData::IsApplicable(const G4DynamicParticle* aP, const G4Element* anE)
43 {
44 G4bool result = true;
45 G4double eKin = aP->GetKineticEnergy();
46 // if(eKin>20*MeV||aP->GetDefinition()!=G4Neutron::Neutron()) result = false;
47 if (eKin < 20 * MeV || 3 * GeV < eKin || aP->GetDefinition() != G4Neutron::Neutron()) {
48 result = false;
49 }
50 // Element Check
51 else if (!(vElement[anE->GetIndex()]))
52 result = false;
53
54 return result;
55 }
56
57 G4ParticleHPJENDLHEData::G4ParticleHPJENDLHEData()
58 {
59 for (auto& itZ : mIsotope) {
60 std::map<G4int, G4PhysicsVector*>* pointer_map = itZ.second;
61 if (pointer_map != nullptr) {
62 for (auto& itA : *pointer_map) {
63 G4PhysicsVector* pointerPhysicsVector = itA.second;
64 if (pointerPhysicsVector != nullptr) {
65 delete pointerPhysicsVector;
66 itA.second = NULL;
67 }
68 }
69 delete pointer_map;
70 itZ.second = NULL;
71 }
72 }
73 mIsotope.clear();
74 }
75
76 G4ParticleHPJENDLHEData::G4ParticleHPJENDLHEData(const G4String& reaction, G4ParticleDefinition* pd)
77 : G4VCrossSectionDataSet("JENDLHE" + reaction + "CrossSection")
78 {
79 reactionName = reaction;
80 BuildPhysicsTable(*pd);
81 }
82
83 G4ParticleHPJENDLHEData::~G4ParticleHPJENDLHEData() = default;
84
85 void G4ParticleHPJENDLHEData::BuildPhysicsTable(const G4ParticleDefinition& aP)
86 {
87 particleName = aP.GetParticleName();
88
89 const G4String& baseName = G4FindDataDir("G4NEUTRONHPDATA");
90 const G4String& dirName = baseName + "/JENDL_HE/" + particleName + "/" + reactionName;
91 const G4String& aFSType = "/CrossSection/";
92 G4ParticleHPNames theNames;
93
94 G4String filename;
95
96 // Create JENDL_HE data
97 // Create map element or isotope
98
99 std::size_t numberOfElements = G4Element::GetNumberOfElements();
100
101 // make a PhysicsVector for each element
102
103 auto theElementTable = G4Element::GetElementTable();
104 vElement.clear();
105 vElement.resize(numberOfElements);
106 for (std::size_t i = 0; i < numberOfElements; ++i) {
107 G4Element* theElement = (*theElementTable)[i];
108 vElement[i] = false;
109
110 // isotope
111 auto nIso = (G4int)(*theElementTable)[i]->GetNumberOfIsotopes();
112 auto Z = (G4int)(*theElementTable)[i]->GetZ();
113 for (G4int i1 = 0; i1 < nIso; ++i1) {
114 G4int A = theElement->GetIsotope(i1)->GetN();
115
116 if (isThisNewIsotope(Z, A)) {
117 std::stringstream ss;
118 ss << dirName << aFSType << Z << "_" << A << "_" << theNames.GetName(Z - 1);
119 filename = ss.str();
120 std::fstream file;
121 file.open(filename, std::fstream::in);
122 G4int dummy;
123 file >> dummy;
124 if (file.good()) {
125 vElement[i] = true;
126
127 // read the file
128 G4PhysicsVector* aPhysVec = readAFile(&file);
129 registAPhysicsVector(Z, A, aPhysVec);
130 }
131 file.close();
132 }
133 }
134 }
135 }
136
137 void G4ParticleHPJENDLHEData::DumpPhysicsTable(const G4ParticleDefinition&)
138 {}
139
140 G4double G4ParticleHPJENDLHEData::GetCrossSection(const G4DynamicParticle* aP,
141 const G4Element* anE, G4double)
142 {
143 // Primary energy >20MeV
144 // Thus not taking into account of Doppler broadening
145 // also not taking into account of Target thermal motions
146
147 G4double result = 0;
148
149 G4double ek = aP->GetKineticEnergy();
150
151 auto nIso = (G4int)anE->GetNumberOfIsotopes();
152 auto Z = (G4int)anE->GetZ();
153 for (G4int i1 = 0; i1 < nIso; ++i1) {
154 G4int A = anE->GetIsotope(i1)->GetN();
155 G4double frac = anE->GetRelativeAbundanceVector()[i1];
156 // This case does NOT request "*perCent".
157 result += frac * getXSfromThisIsotope(Z, A, ek);
158 }
159 return result;
160 }
161
162 G4PhysicsVector* G4ParticleHPJENDLHEData::readAFile(std::fstream* file)
163 {
164 G4int dummy;
165 G4int len;
166 *file >> dummy;
167 *file >> len;
168
169 std::vector<G4double> v_e;
170 std::vector<G4double> v_xs;
171
172 for (G4int i = 0; i < len; ++i) {
173 G4double e;
174 G4double xs;
175
176 *file >> e;
177 *file >> xs;
178 // data are written in eV and barn.
179 v_e.push_back(e * eV);
180 v_xs.push_back(xs * barn);
181 }
182
183 auto aPhysVec = new G4PhysicsFreeVector(static_cast<std::size_t>(len), v_e.front(), v_e.back());
184
185 for (G4int i = 0; i < len; ++i) {
186 aPhysVec->PutValues(static_cast<std::size_t>(i), v_e[i], v_xs[i]);
187 }
188
189 return aPhysVec;
190 }
191
192 G4bool G4ParticleHPJENDLHEData::isThisInMap(G4int z, G4int a)
193 {
194 if (mIsotope.find(z) == mIsotope.end()) return false;
195 if (mIsotope.find(z)->second->find(a) == mIsotope.find(z)->second->end()) return false;
196 return true;
197 }
198
199 void G4ParticleHPJENDLHEData::registAPhysicsVector(G4int Z, G4int A, G4PhysicsVector* aPhysVec)
200 {
201 std::pair<G4int, G4PhysicsVector*> aPair = std::pair<G4int, G4PhysicsVector*>(A, aPhysVec);
202 auto itm = mIsotope.find(Z);
203 if (itm != mIsotope.cend()) {
204 itm->second->insert(aPair);
205 }
206 else {
207 auto aMap = new std::map<G4int, G4PhysicsVector*>;
208 aMap->insert(aPair);
209 mIsotope.insert(std::pair<G4int, std::map<G4int, G4PhysicsVector*>*>(Z, aMap));
210 }
211 }
212
213 G4double G4ParticleHPJENDLHEData::getXSfromThisIsotope(G4int Z, G4int A, G4double ek)
214 {
215 G4double aXSection = 0.0;
216
217 G4PhysicsVector* aPhysVec;
218 if (mIsotope.find(Z)->second->find(A) != mIsotope.find(Z)->second->end()) {
219 aPhysVec = mIsotope.find(Z)->second->find(A)->second;
220 aXSection = aPhysVec->Value(ek);
221 }
222 else {
223 // Select closest one in the same Z
224 G4int delta0 = 99; // no mean for 99
225 for (auto it = mIsotope.find(Z)->second->cbegin(); it != mIsotope.find(Z)->second->cend(); ++it)
226 {
227 G4int delta = std::abs(A - it->first);
228 if (delta < delta0) delta0 = delta;
229 }
230
231 // Randomize of selection larger or smaller than A
232 if (G4UniformRand() < 0.5) delta0 *= -1;
233 G4int A1 = A + delta0;
234 if (mIsotope.find(Z)->second->find(A1) != mIsotope.find(Z)->second->cend()) {
235 aPhysVec = mIsotope.find(Z)->second->find(A1)->second;
236 }
237 else {
238 A1 = A - delta0;
239 aPhysVec = mIsotope.find(Z)->second->find(A1)->second;
240 }
241
242 aXSection = aPhysVec->Value(ek);
243 // X^(2/3) factor
244 aXSection *= G4Pow::GetInstance()->A23(1.0 * A / A1);
245 }
246
247 return aXSection;
248 }
249