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25 // 25 //
26 // neutron_hp -- source file 26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996 27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron trans 28 // A prototype of the low energy neutron transport model.
29 // 29 //
30 // 070523 add neglecting doppler broadening on 30 // 070523 add neglecting doppler broadening on the fly. T. Koi
31 // 070613 fix memory leaking by T. Koi 31 // 070613 fix memory leaking by T. Koi
32 // 071002 enable cross section dump by T. Koi 32 // 071002 enable cross section dump by T. Koi
33 // 080428 change checking point of "neglecting << 33 // 080428 change checking point of "neglecting doppler broadening" flag
34 // from GetCrossSection to BuildPhysics 34 // from GetCrossSection to BuildPhysicsTable by T. Koi
35 // 081024 G4NucleiPropertiesTable:: to G4Nucle 35 // 081024 G4NucleiPropertiesTable:: to G4NucleiProperties::
36 // 36 //
37 // P. Arce, June-2014 Conversion neutron_hp to 37 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
38 // 38 //
39 #include "G4ParticleHPElasticData.hh" 39 #include "G4ParticleHPElasticData.hh"
40 << 40 #include "G4ParticleHPManager.hh"
41 #include "G4Electron.hh" << 41 #include "G4PhysicalConstants.hh"
42 #include "G4ElementTable.hh" << 42 #include "G4SystemOfUnits.hh"
43 #include "G4HadronicParameters.hh" <<
44 #include "G4Neutron.hh" 43 #include "G4Neutron.hh"
45 #include "G4NucleiProperties.hh" << 44 #include "G4ElementTable.hh"
46 #include "G4Nucleus.hh" <<
47 #include "G4ParticleHPData.hh" 45 #include "G4ParticleHPData.hh"
48 #include "G4ParticleHPManager.hh" 46 #include "G4ParticleHPManager.hh"
49 #include "G4PhysicalConstants.hh" <<
50 #include "G4Pow.hh" 47 #include "G4Pow.hh"
51 #include "G4SystemOfUnits.hh" <<
52 48
53 G4ParticleHPElasticData::G4ParticleHPElasticDa << 49 G4ParticleHPElasticData::G4ParticleHPElasticData()
>> 50 :G4VCrossSectionDataSet("NeutronHPElasticXS")
54 { 51 {
55 SetMinKinEnergy(0 * MeV); << 52 SetMinKinEnergy( 0*MeV );
56 SetMaxKinEnergy(20 * MeV); << 53 SetMaxKinEnergy( 20*MeV );
57 54
58 theCrossSections = nullptr; << 55 theCrossSections = 0;
59 instanceOfWorker = false; << 56 onFlightDB = true;
60 if (G4Threading::IsWorkerThread()) { << 57 instanceOfWorker = false;
61 instanceOfWorker = true; << 58 if ( G4Threading::IsWorkerThread() ) {
62 } << 59 instanceOfWorker = true;
63 element_cache = nullptr; << 60 }
64 material_cache = nullptr; << 61 // BuildPhysicsTable( *G4Neutron::Neutron() );
65 ke_cache = 0.0; <<
66 xs_cache = 0.0; <<
67 // BuildPhysicsTable( *G4Neutron::Neutron() <<
68 } 62 }
69 << 63
70 G4ParticleHPElasticData::~G4ParticleHPElasticD 64 G4ParticleHPElasticData::~G4ParticleHPElasticData()
71 { 65 {
72 if (theCrossSections != nullptr && !instance << 66 if ( theCrossSections != NULL && instanceOfWorker != true ) {
73 theCrossSections->clearAndDestroy(); << 67 theCrossSections->clearAndDestroy();
74 delete theCrossSections; << 68 delete theCrossSections;
75 theCrossSections = nullptr; << 69 theCrossSections = NULL;
76 } << 70 }
77 } 71 }
>> 72
>> 73 G4bool G4ParticleHPElasticData::IsIsoApplicable( const G4DynamicParticle* dp ,
>> 74 G4int /*Z*/ , G4int /*A*/ ,
>> 75 const G4Element* /*elm*/ ,
>> 76 const G4Material* /*mat*/ )
>> 77 {
78 78
79 G4bool G4ParticleHPElasticData::IsIsoApplicabl << 79 G4double eKin = dp->GetKineticEnergy();
80 << 80 if ( eKin > GetMaxKinEnergy()
81 << 81 || eKin < GetMinKinEnergy()
82 { << 82 || dp->GetDefinition() != G4Neutron::Neutron() ) return false;
83 G4double eKin = dp->GetKineticEnergy(); << 83
84 return eKin <= GetMaxKinEnergy() && eKin >= << 84 return true;
85 && dp->GetDefinition() == G4Neutron:: <<
86 } <<
87 <<
88 G4double G4ParticleHPElasticData::GetIsoCrossS <<
89 <<
90 <<
91 <<
92 { <<
93 if (dp->GetKineticEnergy() == ke_cache && el <<
94 return xs_cache; <<
95 <<
96 ke_cache = dp->GetKineticEnergy(); <<
97 element_cache = element; <<
98 material_cache = material; <<
99 G4double xs = GetCrossSection(dp, element, m <<
100 xs_cache = xs; <<
101 return xs; <<
102 } 85 }
103 86
>> 87 G4double G4ParticleHPElasticData::GetIsoCrossSection( const G4DynamicParticle* dp ,
>> 88 G4int /*Z*/ , G4int /*A*/ ,
>> 89 const G4Isotope* /*iso*/ ,
>> 90 const G4Element* element ,
>> 91 const G4Material* material )
>> 92 {
>> 93 if ( dp->GetKineticEnergy() == ke_cache && element == element_cache && material == material_cache ) return xs_cache;
>> 94
>> 95 ke_cache = dp->GetKineticEnergy();
>> 96 element_cache = element;
>> 97 material_cache = material;
>> 98 G4double xs = GetCrossSection( dp , element , material->GetTemperature() );
>> 99 xs_cache = xs;
>> 100 return xs;
>> 101 }
>> 102
>> 103 /*
>> 104 G4bool G4ParticleHPElasticData::IsApplicable(const G4DynamicParticle*aP, const G4Element*)
>> 105 {
>> 106 G4bool result = true;
>> 107 G4double eKin = aP->GetKineticEnergy();
>> 108 if(eKin>20*MeV||aP->GetDefinition()!=G4Neutron::Neutron()) result = false;
>> 109 return result;
>> 110 }
>> 111 */
>> 112
104 void G4ParticleHPElasticData::BuildPhysicsTabl 113 void G4ParticleHPElasticData::BuildPhysicsTable(const G4ParticleDefinition& aP)
105 { 114 {
106 if (&aP != G4Neutron::Neutron()) <<
107 throw G4HadronicException(__FILE__, __LINE <<
108 "Attempt to use <<
109 <<
110 if (G4Threading::IsWorkerThread()) { <<
111 theCrossSections = G4ParticleHPManager::Ge <<
112 return; <<
113 } <<
114 115
115 std::size_t numberOfElements = G4Element::Ge << 116 if(&aP!=G4Neutron::Neutron())
116 // TKDB << 117 throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!");
117 // if ( theCrossSections == 0 ) theCrossSect << 118
118 if (theCrossSections == nullptr) << 119 //080428
119 theCrossSections = new G4PhysicsTable(numb << 120 if ( G4ParticleHPManager::GetInstance()->GetNeglectDoppler() )
120 else << 121 {
121 theCrossSections->clearAndDestroy(); << 122 G4cout << "Find a flag of \"G4NEUTRONHP_NEGLECT_DOPPLER\"." << G4endl;
>> 123 G4cout << "On the fly Doppler broadening will be neglect in the cross section calculation of elastic scattering of neutrons (<20MeV)." << G4endl;
>> 124 onFlightDB = false;
>> 125 }
>> 126
>> 127 if ( G4Threading::IsWorkerThread() ) {
>> 128 theCrossSections = G4ParticleHPManager::GetInstance()->GetElasticCrossSections();
>> 129 return;
>> 130 }
>> 131
>> 132 size_t numberOfElements = G4Element::GetNumberOfElements();
>> 133 // TKDB
>> 134 //if ( theCrossSections == 0 ) theCrossSections = new G4PhysicsTable( numberOfElements );
>> 135 if ( theCrossSections == NULL )
>> 136 theCrossSections = new G4PhysicsTable( numberOfElements );
>> 137 else
>> 138 theCrossSections->clearAndDestroy();
122 139
123 // make a PhysicsVector for each element 140 // make a PhysicsVector for each element
124 141
125 auto theElementTable = G4Element::GetElement << 142 static G4ThreadLocal G4ElementTable *theElementTable = 0 ; if (!theElementTable) theElementTable= G4Element::GetElementTable();
126 for (std::size_t i = 0; i < numberOfElements << 143 for( size_t i=0; i<numberOfElements; ++i )
127 G4PhysicsVector* physVec = G4ParticleHPDat << 144 {
128 ->MakePhysics << 145 G4PhysicsVector* physVec = G4ParticleHPData::
>> 146 Instance(G4Neutron::Neutron())->MakePhysicsVector((*theElementTable)[i], this);
129 theCrossSections->push_back(physVec); 147 theCrossSections->push_back(physVec);
130 } 148 }
131 149
132 G4ParticleHPManager::GetInstance()->Register << 150 G4ParticleHPManager::GetInstance()->RegisterElasticCrossSections(theCrossSections);
133 } 151 }
134 152
135 void G4ParticleHPElasticData::DumpPhysicsTable << 153 void G4ParticleHPElasticData::DumpPhysicsTable(const G4ParticleDefinition& aP)
136 { 154 {
137 #ifdef G4VERBOSE << 155 if(&aP!=G4Neutron::Neutron())
138 if (G4HadronicParameters::Instance()->GetVer << 156 throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!");
>> 157
>> 158 //
>> 159 // Dump element based cross section
>> 160 // range 10e-5 eV to 20 MeV
>> 161 // 10 point per decade
>> 162 // in barn
>> 163 //
>> 164
>> 165 G4cout << G4endl;
>> 166 G4cout << G4endl;
>> 167 G4cout << "Elastic Cross Section of Neutron HP"<< G4endl;
>> 168 G4cout << "(Pointwise cross-section at 0 Kelvin.)" << G4endl;
>> 169 G4cout << G4endl;
>> 170 G4cout << "Name of Element" << G4endl;
>> 171 G4cout << "Energy[eV] XS[barn]" << G4endl;
>> 172 G4cout << G4endl;
>> 173
>> 174 size_t numberOfElements = G4Element::GetNumberOfElements();
>> 175 static G4ThreadLocal G4ElementTable *theElementTable = 0 ; if (!theElementTable) theElementTable= G4Element::GetElementTable();
>> 176
>> 177 for ( size_t i = 0 ; i < numberOfElements ; ++i )
>> 178 {
>> 179
>> 180 G4cout << (*theElementTable)[i]->GetName() << G4endl;
>> 181
>> 182 G4int ie = 0;
>> 183
>> 184 for ( ie = 0 ; ie < 130 ; ie++ )
>> 185 {
>> 186 G4double eKinetic = 1.0e-5 * G4Pow::GetInstance()->powA ( 10.0 , ie/10.0 ) *eV;
>> 187 G4bool outOfRange = false;
>> 188
>> 189 if ( eKinetic < 20*MeV )
>> 190 {
>> 191 G4cout << eKinetic/eV << " " << (*((*theCrossSections)(i))).GetValue(eKinetic, outOfRange)/barn << G4endl;
>> 192 }
139 193
140 // <<
141 // Dump element based cross section <<
142 // range 10e-5 eV to 20 MeV <<
143 // 10 point per decade <<
144 // in barn <<
145 // <<
146 <<
147 G4cout << G4endl; <<
148 G4cout << G4endl; <<
149 G4cout << "Elastic Cross Section of Neutron <<
150 G4cout << "(Pointwise cross-section at 0 Kel <<
151 G4cout << G4endl; <<
152 G4cout << "Name of Element" << G4endl; <<
153 G4cout << "Energy[eV] XS[barn]" << G4endl; <<
154 G4cout << G4endl; <<
155 <<
156 std::size_t numberOfElements = G4Element::Ge <<
157 auto theElementTable = G4Element::GetElement <<
158 <<
159 for (std::size_t i = 0; i < numberOfElements <<
160 G4cout << (*theElementTable)[i]->GetName() <<
161 G4int ie = 0; <<
162 <<
163 for (ie = 0; ie < 130; ++ie) { <<
164 G4double eKinetic = 1.0e-5 * G4Pow::GetI <<
165 G4bool outOfRange = false; <<
166 <<
167 if (eKinetic < 20 * MeV) { <<
168 G4cout << eKinetic / eV << " " <<
169 << (*((*theCrossSections)(i))). <<
170 } 194 }
171 } << 195
172 G4cout << G4endl; << 196 G4cout << G4endl;
173 } << 197 }
174 #endif << 198
>> 199
>> 200 // G4cout << "G4ParticleHPElasticData::DumpPhysicsTable still to be implemented"<<G4endl;
175 } 201 }
176 202
177 G4double G4ParticleHPElasticData::GetCrossSect << 203 #include "G4Nucleus.hh"
178 << 204 #include "G4NucleiProperties.hh"
>> 205 #include "G4Neutron.hh"
>> 206 #include "G4Electron.hh"
>> 207
>> 208 G4double G4ParticleHPElasticData::
>> 209 GetCrossSection(const G4DynamicParticle* aP, const G4Element*anE, G4double aT)
179 { 210 {
180 G4double result = 0; 211 G4double result = 0;
181 G4bool outOfRange; 212 G4bool outOfRange;
182 auto index = (G4int)anE->GetIndex(); << 213 G4int index = anE->GetIndex();
183 214
184 // prepare neutron 215 // prepare neutron
185 G4double eKinetic = aP->GetKineticEnergy(); 216 G4double eKinetic = aP->GetKineticEnergy();
186 217
187 if (G4ParticleHPManager::GetInstance()->GetN << 218 if ( !onFlightDB )
188 // NEGLECT_DOPPLER_B. << 219 {
189 G4double factor = 1.0; << 220 //NEGLECT_DOPPLER_B.
190 if (eKinetic < aT * k_Boltzmann) { << 221 G4double factor = 1.0;
191 // below 0.1 eV neutrons << 222 if ( eKinetic < aT * k_Boltzmann )
192 // Have to do some, but now just igonre. << 223 {
193 // Will take care after performance chec << 224 // below 0.1 eV neutrons
194 // factor = factor * targetV; << 225 // Have to do some, but now just igonre.
195 } << 226 // Will take care after performance check.
196 return ((*((*theCrossSections)(index))).Ge << 227 // factor = factor * targetV;
>> 228 }
>> 229 return ( (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) )* factor;
197 } 230 }
198 231
199 G4ReactionProduct theNeutron(aP->GetDefiniti << 232 G4ReactionProduct theNeutron( aP->GetDefinition() );
200 theNeutron.SetMomentum(aP->GetMomentum()); << 233 theNeutron.SetMomentum( aP->GetMomentum() );
201 theNeutron.SetKineticEnergy(eKinetic); << 234 theNeutron.SetKineticEnergy( eKinetic );
202 235
203 // prepare thermal nucleus 236 // prepare thermal nucleus
204 G4Nucleus aNuc; 237 G4Nucleus aNuc;
205 G4double eps = 0.0001; 238 G4double eps = 0.0001;
206 G4double theA = anE->GetN(); 239 G4double theA = anE->GetN();
207 G4double theZ = anE->GetZ(); 240 G4double theZ = anE->GetZ();
208 G4double eleMass; << 241 G4double eleMass;
209 242
210 eleMass = (G4NucleiProperties::GetNuclearMas <<
211 / G4Neutron::Neutron()->GetPDGMass <<
212 243
>> 244 eleMass = ( G4NucleiProperties::GetNuclearMass( static_cast<G4int>(theA+eps) , static_cast<G4int>(theZ+eps) )
>> 245 ) / G4Neutron::Neutron()->GetPDGMass();
>> 246
213 G4ReactionProduct boosted; 247 G4ReactionProduct boosted;
214 G4double aXsection; 248 G4double aXsection;
215 << 249
216 // MC integration loop 250 // MC integration loop
217 G4int counter = 0; 251 G4int counter = 0;
218 G4double buffer = 0; 252 G4double buffer = 0;
219 G4int size = G4int(std::max(10., aT / 60 * k << 253 G4int size = G4int(std::max(10., aT/60*kelvin));
220 G4ThreeVector neutronVelocity = << 254 G4ThreeVector neutronVelocity = 1./G4Neutron::Neutron()->GetPDGMass()*theNeutron.GetMomentum();
221 1. / G4Neutron::Neutron()->GetPDGMass() * <<
222 G4double neutronVMag = neutronVelocity.mag() 255 G4double neutronVMag = neutronVelocity.mag();
223 256
224 while (counter == 0 << 257 while(counter == 0 || std::abs(buffer-result/std::max(1,counter)) > 0.03*buffer) // Loop checking, 11.05.2015, T. Koi
225 || std::abs(buffer - result / std::ma <<
226 > 0.03 * buffer) // Loop checki <<
227 { 258 {
228 if (counter != 0) buffer = result / counte << 259 if(counter) buffer = result/counter;
229 while (counter < size) // Loop checking, << 260 while (counter<size) // Loop checking, 11.05.2015, T. Koi
230 { 261 {
231 counter++; << 262 counter ++;
232 G4ReactionProduct aThermalNuc = aNuc.Get 263 G4ReactionProduct aThermalNuc = aNuc.GetThermalNucleus(eleMass, aT);
233 boosted.Lorentz(theNeutron, aThermalNuc) 264 boosted.Lorentz(theNeutron, aThermalNuc);
234 G4double theEkin = boosted.GetKineticEne 265 G4double theEkin = boosted.GetKineticEnergy();
235 aXsection = (*((*theCrossSections)(index 266 aXsection = (*((*theCrossSections)(index))).GetValue(theEkin, outOfRange);
236 // velocity correction. 267 // velocity correction.
237 G4ThreeVector targetVelocity = 1. / aThe << 268 G4ThreeVector targetVelocity = 1./aThermalNuc.GetMass()*aThermalNuc.GetMomentum();
238 aXsection *= (targetVelocity - neutronVe << 269 aXsection *= (targetVelocity-neutronVelocity).mag()/neutronVMag;
239 result += aXsection; 270 result += aXsection;
240 } 271 }
241 size += size; 272 size += size;
242 } 273 }
243 result /= counter; 274 result /= counter;
244 /* << 275 /*
245 // Checking impact of G4NEUTRONHP_NEGLECT << 276 // Checking impact of G4NEUTRONHP_NEGLECT_DOPPLER
246 G4cout << " result " << result << " " << 277 G4cout << " result " << result << " "
247 << (*((*theCrossSections)(index))). << 278 << (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) << " "
248 << (*((*theCrossSections)(index))). << 279 << (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) /result << G4endl;
249 */ << 280 */
250 return result; 281 return result;
251 } 282 }
252 283
253 G4int G4ParticleHPElasticData::GetVerboseLevel << 284 G4int G4ParticleHPElasticData::
>> 285 GetVerboseLevel() const
254 { 286 {
255 return G4ParticleHPManager::GetInstance()->G << 287 return G4ParticleHPManager::GetInstance()->GetVerboseLevel();
256 } 288 }
257 289
258 void G4ParticleHPElasticData::SetVerboseLevel( << 290 void G4ParticleHPElasticData::
>> 291 SetVerboseLevel( G4int newValue )
259 { 292 {
260 G4ParticleHPManager::GetInstance()->SetVerbo << 293 G4ParticleHPManager::GetInstance()->SetVerboseLevel(newValue);
261 } 294 }
262 <<
263 void G4ParticleHPElasticData::CrossSectionDesc 295 void G4ParticleHPElasticData::CrossSectionDescription(std::ostream& outFile) const
264 { 296 {
265 outFile << "High Precision cross data based << 297 outFile << "High Precision cross data based on Evaluated Nuclear Data Files (ENDF) for elastic reaction of neutrons below 20MeV\n" ;
266 "reaction of neutrons below 20MeV <<
267 } 298 }
268 299