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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" << 47 #include "G4HadronicParameters.hh"
50 #include "G4Pow.hh" 48 #include "G4Pow.hh"
51 #include "G4SystemOfUnits.hh" <<
52 49
53 G4ParticleHPElasticData::G4ParticleHPElasticDa << 50 G4ParticleHPElasticData::G4ParticleHPElasticData()
>> 51 :G4VCrossSectionDataSet("NeutronHPElasticXS")
54 { 52 {
55 SetMinKinEnergy(0 * MeV); << 53 SetMinKinEnergy( 0*MeV );
56 SetMaxKinEnergy(20 * MeV); << 54 SetMaxKinEnergy( 20*MeV );
57 55
58 theCrossSections = nullptr; << 56 theCrossSections = 0;
59 instanceOfWorker = false; << 57 onFlightDB = true;
60 if (G4Threading::IsWorkerThread()) { << 58 instanceOfWorker = false;
61 instanceOfWorker = true; << 59 if ( G4Threading::IsWorkerThread() ) {
62 } << 60 instanceOfWorker = true;
63 element_cache = nullptr; << 61 }
64 material_cache = nullptr; << 62 element_cache = NULL;
65 ke_cache = 0.0; << 63 material_cache = NULL;
66 xs_cache = 0.0; << 64 ke_cache = 0.0;
67 // BuildPhysicsTable( *G4Neutron::Neutron() << 65 xs_cache = 0.0;
>> 66 // BuildPhysicsTable( *G4Neutron::Neutron() );
68 } 67 }
69 << 68
70 G4ParticleHPElasticData::~G4ParticleHPElasticD 69 G4ParticleHPElasticData::~G4ParticleHPElasticData()
71 { 70 {
72 if (theCrossSections != nullptr && !instance << 71 if ( theCrossSections != NULL && instanceOfWorker != true ) {
73 theCrossSections->clearAndDestroy(); << 72 theCrossSections->clearAndDestroy();
74 delete theCrossSections; << 73 delete theCrossSections;
75 theCrossSections = nullptr; << 74 theCrossSections = NULL;
76 } << 75 }
>> 76 }
>> 77
>> 78 G4bool G4ParticleHPElasticData::IsIsoApplicable( const G4DynamicParticle* dp ,
>> 79 G4int /*Z*/ , G4int /*A*/ ,
>> 80 const G4Element* /*elm*/ ,
>> 81 const G4Material* /*mat*/ )
>> 82 {
>> 83
>> 84 G4double eKin = dp->GetKineticEnergy();
>> 85 if ( eKin > GetMaxKinEnergy()
>> 86 || eKin < GetMinKinEnergy()
>> 87 || dp->GetDefinition() != G4Neutron::Neutron() ) return false;
>> 88
>> 89 return true;
>> 90 }
>> 91
>> 92 G4double G4ParticleHPElasticData::GetIsoCrossSection( const G4DynamicParticle* dp ,
>> 93 G4int /*Z*/ , G4int /*A*/ ,
>> 94 const G4Isotope* /*iso*/ ,
>> 95 const G4Element* element ,
>> 96 const G4Material* material )
>> 97 {
>> 98 if ( dp->GetKineticEnergy() == ke_cache && element == element_cache && material == material_cache ) return xs_cache;
>> 99
>> 100 ke_cache = dp->GetKineticEnergy();
>> 101 element_cache = element;
>> 102 material_cache = material;
>> 103 G4double xs = GetCrossSection( dp , element , material->GetTemperature() );
>> 104 xs_cache = xs;
>> 105 return xs;
77 } 106 }
78 107
79 G4bool G4ParticleHPElasticData::IsIsoApplicabl << 108 /*
80 << 109 G4bool G4ParticleHPElasticData::IsApplicable(const G4DynamicParticle*aP, const G4Element*)
81 << 110 {
82 { << 111 G4bool result = true;
83 G4double eKin = dp->GetKineticEnergy(); << 112 G4double eKin = aP->GetKineticEnergy();
84 return eKin <= GetMaxKinEnergy() && eKin >= << 113 if(eKin>20*MeV||aP->GetDefinition()!=G4Neutron::Neutron()) result = false;
85 && dp->GetDefinition() == G4Neutron:: << 114 return result;
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 } 115 }
>> 116 */
103 117
104 void G4ParticleHPElasticData::BuildPhysicsTabl 118 void G4ParticleHPElasticData::BuildPhysicsTable(const G4ParticleDefinition& aP)
105 { 119 {
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 } <<
114 120
115 std::size_t numberOfElements = G4Element::Ge << 121 if(&aP!=G4Neutron::Neutron())
116 // TKDB << 122 throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!");
117 // if ( theCrossSections == 0 ) theCrossSect << 123
118 if (theCrossSections == nullptr) << 124 //080428
119 theCrossSections = new G4PhysicsTable(numb << 125 if ( G4ParticleHPManager::GetInstance()->GetNeglectDoppler() )
120 else << 126 {
121 theCrossSections->clearAndDestroy(); << 127 onFlightDB = false;
>> 128 #ifdef G4VERBOSE
>> 129 if ( G4HadronicParameters::Instance()->GetVerboseLevel() > 0 ) {
>> 130 G4cout << "Find a flag of \"G4NEUTRONHP_NEGLECT_DOPPLER\"." << G4endl;
>> 131 G4cout << "On the fly Doppler broadening will be neglect in the cross section calculation of elastic scattering of neutrons (<20MeV)." << G4endl;
>> 132 }
>> 133 #endif
>> 134 }
>> 135
>> 136 if ( G4Threading::IsWorkerThread() ) {
>> 137 theCrossSections = G4ParticleHPManager::GetInstance()->GetElasticCrossSections();
>> 138 return;
>> 139 }
>> 140
>> 141 size_t numberOfElements = G4Element::GetNumberOfElements();
>> 142 // TKDB
>> 143 //if ( theCrossSections == 0 ) theCrossSections = new G4PhysicsTable( numberOfElements );
>> 144 if ( theCrossSections == NULL )
>> 145 theCrossSections = new G4PhysicsTable( numberOfElements );
>> 146 else
>> 147 theCrossSections->clearAndDestroy();
122 148
123 // make a PhysicsVector for each element 149 // make a PhysicsVector for each element
124 150
125 auto theElementTable = G4Element::GetElement << 151 static G4ThreadLocal G4ElementTable *theElementTable = 0 ; if (!theElementTable) theElementTable= G4Element::GetElementTable();
126 for (std::size_t i = 0; i < numberOfElements << 152 for( size_t i=0; i<numberOfElements; ++i )
127 G4PhysicsVector* physVec = G4ParticleHPDat << 153 {
128 ->MakePhysics << 154 G4PhysicsVector* physVec = G4ParticleHPData::
>> 155 Instance(G4Neutron::Neutron())->MakePhysicsVector((*theElementTable)[i], this);
129 theCrossSections->push_back(physVec); 156 theCrossSections->push_back(physVec);
130 } 157 }
131 158
132 G4ParticleHPManager::GetInstance()->Register << 159 G4ParticleHPManager::GetInstance()->RegisterElasticCrossSections(theCrossSections);
133 } 160 }
134 161
135 void G4ParticleHPElasticData::DumpPhysicsTable << 162 void G4ParticleHPElasticData::DumpPhysicsTable(const G4ParticleDefinition& aP)
136 { 163 {
137 #ifdef G4VERBOSE << 164 if(&aP!=G4Neutron::Neutron())
138 if (G4HadronicParameters::Instance()->GetVer << 165 throw G4HadronicException(__FILE__, __LINE__, "Attempt to use NeutronHP data for particles other than neutrons!!!");
>> 166
>> 167 #ifdef G4VERBOSE
>> 168 if ( G4HadronicParameters::Instance()->GetVerboseLevel() == 0 ) return;
>> 169
>> 170 //
>> 171 // Dump element based cross section
>> 172 // range 10e-5 eV to 20 MeV
>> 173 // 10 point per decade
>> 174 // in barn
>> 175 //
>> 176
>> 177 G4cout << G4endl;
>> 178 G4cout << G4endl;
>> 179 G4cout << "Elastic Cross Section of Neutron HP"<< G4endl;
>> 180 G4cout << "(Pointwise cross-section at 0 Kelvin.)" << G4endl;
>> 181 G4cout << G4endl;
>> 182 G4cout << "Name of Element" << G4endl;
>> 183 G4cout << "Energy[eV] XS[barn]" << G4endl;
>> 184 G4cout << G4endl;
>> 185
>> 186 size_t numberOfElements = G4Element::GetNumberOfElements();
>> 187 static G4ThreadLocal G4ElementTable *theElementTable = 0 ; if (!theElementTable) theElementTable= G4Element::GetElementTable();
>> 188
>> 189 for ( size_t i = 0 ; i < numberOfElements ; ++i )
>> 190 {
>> 191
>> 192 G4cout << (*theElementTable)[i]->GetName() << G4endl;
>> 193
>> 194 G4int ie = 0;
>> 195
>> 196 for ( ie = 0 ; ie < 130 ; ie++ )
>> 197 {
>> 198 G4double eKinetic = 1.0e-5 * G4Pow::GetInstance()->powA ( 10.0 , ie/10.0 ) *eV;
>> 199 G4bool outOfRange = false;
>> 200
>> 201 if ( eKinetic < 20*MeV )
>> 202 {
>> 203 G4cout << eKinetic/eV << " " << (*((*theCrossSections)(i))).GetValue(eKinetic, outOfRange)/barn << G4endl;
>> 204 }
139 205
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 } 206 }
171 } << 207
172 G4cout << G4endl; << 208 G4cout << G4endl;
173 } << 209 }
174 #endif << 210
>> 211 //G4cout << "G4ParticleHPElasticData::DumpPhysicsTable still to be implemented"<<G4endl;
>> 212 #endif
175 } 213 }
176 214
177 G4double G4ParticleHPElasticData::GetCrossSect << 215 #include "G4Nucleus.hh"
178 << 216 #include "G4NucleiProperties.hh"
>> 217 #include "G4Neutron.hh"
>> 218 #include "G4Electron.hh"
>> 219
>> 220 G4double G4ParticleHPElasticData::
>> 221 GetCrossSection(const G4DynamicParticle* aP, const G4Element*anE, G4double aT)
179 { 222 {
180 G4double result = 0; 223 G4double result = 0;
181 G4bool outOfRange; 224 G4bool outOfRange;
182 auto index = (G4int)anE->GetIndex(); << 225 G4int index = anE->GetIndex();
183 226
184 // prepare neutron 227 // prepare neutron
185 G4double eKinetic = aP->GetKineticEnergy(); 228 G4double eKinetic = aP->GetKineticEnergy();
186 229
187 if (G4ParticleHPManager::GetInstance()->GetN << 230 if ( !onFlightDB )
188 // NEGLECT_DOPPLER_B. << 231 {
189 G4double factor = 1.0; << 232 //NEGLECT_DOPPLER_B.
190 if (eKinetic < aT * k_Boltzmann) { << 233 G4double factor = 1.0;
191 // below 0.1 eV neutrons << 234 if ( eKinetic < aT * k_Boltzmann )
192 // Have to do some, but now just igonre. << 235 {
193 // Will take care after performance chec << 236 // below 0.1 eV neutrons
194 // factor = factor * targetV; << 237 // Have to do some, but now just igonre.
195 } << 238 // Will take care after performance check.
196 return ((*((*theCrossSections)(index))).Ge << 239 // factor = factor * targetV;
>> 240 }
>> 241 return ( (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) )* factor;
197 } 242 }
198 243
199 G4ReactionProduct theNeutron(aP->GetDefiniti << 244 G4ReactionProduct theNeutron( aP->GetDefinition() );
200 theNeutron.SetMomentum(aP->GetMomentum()); << 245 theNeutron.SetMomentum( aP->GetMomentum() );
201 theNeutron.SetKineticEnergy(eKinetic); << 246 theNeutron.SetKineticEnergy( eKinetic );
202 247
203 // prepare thermal nucleus 248 // prepare thermal nucleus
204 G4Nucleus aNuc; 249 G4Nucleus aNuc;
205 G4double eps = 0.0001; 250 G4double eps = 0.0001;
206 G4double theA = anE->GetN(); 251 G4double theA = anE->GetN();
207 G4double theZ = anE->GetZ(); 252 G4double theZ = anE->GetZ();
208 G4double eleMass; << 253 G4double eleMass;
209 254
210 eleMass = (G4NucleiProperties::GetNuclearMas <<
211 / G4Neutron::Neutron()->GetPDGMass <<
212 255
>> 256 eleMass = ( G4NucleiProperties::GetNuclearMass( static_cast<G4int>(theA+eps) , static_cast<G4int>(theZ+eps) )
>> 257 ) / G4Neutron::Neutron()->GetPDGMass();
>> 258
213 G4ReactionProduct boosted; 259 G4ReactionProduct boosted;
214 G4double aXsection; 260 G4double aXsection;
215 << 261
216 // MC integration loop 262 // MC integration loop
217 G4int counter = 0; 263 G4int counter = 0;
218 G4double buffer = 0; 264 G4double buffer = 0;
219 G4int size = G4int(std::max(10., aT / 60 * k << 265 G4int size = G4int(std::max(10., aT/60*kelvin));
220 G4ThreeVector neutronVelocity = << 266 G4ThreeVector neutronVelocity = 1./G4Neutron::Neutron()->GetPDGMass()*theNeutron.GetMomentum();
221 1. / G4Neutron::Neutron()->GetPDGMass() * <<
222 G4double neutronVMag = neutronVelocity.mag() 267 G4double neutronVMag = neutronVelocity.mag();
223 268
224 while (counter == 0 << 269 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 { 270 {
228 if (counter != 0) buffer = result / counte << 271 if(counter) buffer = result/counter;
229 while (counter < size) // Loop checking, << 272 while (counter<size) // Loop checking, 11.05.2015, T. Koi
230 { 273 {
231 counter++; << 274 counter ++;
232 G4ReactionProduct aThermalNuc = aNuc.Get 275 G4ReactionProduct aThermalNuc = aNuc.GetThermalNucleus(eleMass, aT);
233 boosted.Lorentz(theNeutron, aThermalNuc) 276 boosted.Lorentz(theNeutron, aThermalNuc);
234 G4double theEkin = boosted.GetKineticEne 277 G4double theEkin = boosted.GetKineticEnergy();
235 aXsection = (*((*theCrossSections)(index 278 aXsection = (*((*theCrossSections)(index))).GetValue(theEkin, outOfRange);
236 // velocity correction. 279 // velocity correction.
237 G4ThreeVector targetVelocity = 1. / aThe << 280 G4ThreeVector targetVelocity = 1./aThermalNuc.GetMass()*aThermalNuc.GetMomentum();
238 aXsection *= (targetVelocity - neutronVe << 281 aXsection *= (targetVelocity-neutronVelocity).mag()/neutronVMag;
239 result += aXsection; 282 result += aXsection;
240 } 283 }
241 size += size; 284 size += size;
242 } 285 }
243 result /= counter; 286 result /= counter;
244 /* << 287 /*
245 // Checking impact of G4NEUTRONHP_NEGLECT << 288 // Checking impact of G4NEUTRONHP_NEGLECT_DOPPLER
246 G4cout << " result " << result << " " << 289 G4cout << " result " << result << " "
247 << (*((*theCrossSections)(index))). << 290 << (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) << " "
248 << (*((*theCrossSections)(index))). << 291 << (*((*theCrossSections)(index))).GetValue(eKinetic, outOfRange) /result << G4endl;
249 */ << 292 */
250 return result; 293 return result;
251 } 294 }
252 295
253 G4int G4ParticleHPElasticData::GetVerboseLevel << 296 G4int G4ParticleHPElasticData::
>> 297 GetVerboseLevel() const
254 { 298 {
255 return G4ParticleHPManager::GetInstance()->G << 299 return G4ParticleHPManager::GetInstance()->GetVerboseLevel();
256 } 300 }
257 301
258 void G4ParticleHPElasticData::SetVerboseLevel( << 302 void G4ParticleHPElasticData::
>> 303 SetVerboseLevel( G4int newValue )
259 { 304 {
260 G4ParticleHPManager::GetInstance()->SetVerbo << 305 G4ParticleHPManager::GetInstance()->SetVerboseLevel(newValue);
261 } 306 }
262 <<
263 void G4ParticleHPElasticData::CrossSectionDesc 307 void G4ParticleHPElasticData::CrossSectionDescription(std::ostream& outFile) const
264 { 308 {
265 outFile << "High Precision cross data based << 309 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 } 310 }
268 311