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