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