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53 // UCRL-CODE-224807
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56 //
57 // neutron_hp -- source file
58 // J.M. Verbeke, Jan-2007
59 // A low energy neutron-induced fission model.
60 //
61
62 #include "G4FissionLibrary.hh"
63 #include "G4ParticleHPManager.hh"
64 #include "G4SystemOfUnits.hh"
65 #include "G4PhysicsModelCatalog.hh"
66
67 G4FissionLibrary::G4FissionLibrary()
68 : G4ParticleHPFinalState(), theIsotope(0), targetMass(0.0), secID(-1)
69 {
70 hasXsec = false;
71 fe=0;
72 secID = G4PhysicsModelCatalog::GetModelID( "model_G4LLNLFission" );
73 }
74
75 G4FissionLibrary::~G4FissionLibrary()
76 {}
77
78 G4ParticleHPFinalState * G4FissionLibrary::New()
79 {
80 G4FissionLibrary * theNew = new G4FissionLibrary;
81 return theNew;
82 }
83
84 //void G4FissionLibrary::Init (G4double A, G4double Z, G4String & dirName, G4String &)
85 void G4FissionLibrary::Init (G4double A, G4double Z, G4int M, const G4String& dirName, const G4String&, G4ParticleDefinition*)
86 {
87 G4String tString = "/FS/";
88 G4bool dbool;
89 theIsotope = static_cast<G4int>(1000*Z+A);
90 G4ParticleHPDataUsed aFile = theNames.GetName(static_cast<G4int>(A), static_cast<G4int>(Z), M, dirName, tString, dbool);
91 G4String filename = aFile.GetName();
92
93 if(!dbool)
94 {
95 hasAnyData = false;
96 hasFSData = false;
97 hasXsec = false;
98 return;
99 }
100 //std::ifstream theData(filename, std::ios::in);
101 std::istringstream theData(std::ios::in);
102 G4ParticleHPManager::GetInstance()->GetDataStream(filename,theData);
103
104 // here it comes
105 G4int infoType, dataType;
106 hasFSData = false;
107 while (theData >> infoType) // Loop checking, 11.03.2015, T. Koi
108 {
109 hasFSData = true;
110 theData >> dataType;
111 switch(infoType)
112 {
113 case 1:
114 if(dataType==4) theNeutronAngularDis.Init(theData);
115 if(dataType==5) thePromptNeutronEnDis.Init(theData);
116 if(dataType==12) theFinalStatePhotons.InitMean(theData);
117 if(dataType==14) theFinalStatePhotons.InitAngular(theData);
118 if(dataType==15) theFinalStatePhotons.InitEnergies(theData);
119 break;
120 case 2:
121 if(dataType==1) theFinalStateNeutrons.InitMean(theData);
122 break;
123 case 3:
124 if(dataType==1) theFinalStateNeutrons.InitDelayed(theData);
125 if(dataType==5) theDelayedNeutronEnDis.Init(theData);
126 break;
127 case 4:
128 if(dataType==1) theFinalStateNeutrons.InitPrompt(theData);
129 break;
130 case 5:
131 if(dataType==1) theEnergyRelease.Init(theData);
132 break;
133 default:
134 G4cout << "G4FissionLibrary::Init: unknown data type"<<dataType<<G4endl;
135 throw G4HadronicException(__FILE__, __LINE__, "G4FissionLibrary::Init: unknown data type");
136 break;
137 }
138 }
139 targetMass = theFinalStateNeutrons.GetTargetMass();
140 //theData.close();
141 }
142
143 G4HadFinalState* G4FissionLibrary::ApplyYourself(const G4HadProjectile & theTrack)
144 {
145
146 if ( theResult.Get() == NULL ) theResult.Put( new G4HadFinalState );
147 theResult.Get()->Clear();
148
149 // prepare neutron
150 G4double eKinetic = theTrack.GetKineticEnergy();
151 const G4HadProjectile* incidentParticle = &theTrack;
152 G4ReactionProduct theNeutron(incidentParticle->GetDefinition() );
153 theNeutron.SetMomentum(incidentParticle->Get4Momentum().vect() );
154 theNeutron.SetKineticEnergy(eKinetic);
155
156 // prepare target
157 G4Nucleus aNucleus;
158 G4ReactionProduct theTarget;
159 G4ThreeVector neuVelo = (1./incidentParticle->GetDefinition()->GetPDGMass())*theNeutron.GetMomentum();
160 theTarget = aNucleus.GetBiasedThermalNucleus( targetMass, neuVelo, theTrack.GetMaterial()->GetTemperature());
161
162 // set neutron and target in the FS classes
163 //theNeutronAngularDis.SetNeutron(theNeutron);
164 theNeutronAngularDis.SetProjectileRP(theNeutron);
165 theNeutronAngularDis.SetTarget(theTarget);
166
167 // boost to target rest system
168 theNeutron.Lorentz(theNeutron, -1*theTarget);
169
170 eKinetic = theNeutron.GetKineticEnergy();
171
172 // dice neutron and gamma multiplicities, energies and momenta in Lab. @@
173 // no energy conservation on an event-to-event basis. we rely on the data to be ok. @@
174 // also for mean, we rely on the consistency of the data. @@
175
176 G4int nPrompt=0, gPrompt=0;
177 SampleMult(theTrack, &nPrompt, &gPrompt, eKinetic);
178
179 // Build neutrons and add them to dynamic particle vector
180 G4double momentum;
181 for(G4int i=0; i<nPrompt; i++)
182 {
183 G4DynamicParticle * it = new G4DynamicParticle;
184 it->SetDefinition(G4Neutron::Neutron());
185 it->SetKineticEnergy(fe->getNeutronEnergy(i)*MeV);
186 momentum = it->GetTotalMomentum();
187 G4ThreeVector temp(momentum*fe->getNeutronDircosu(i),
188 momentum*fe->getNeutronDircosv(i),
189 momentum*fe->getNeutronDircosw(i));
190 it->SetMomentum( temp );
191 // it->SetGlobalTime(fe->getNeutronAge(i)*second);
192 theResult.Get()->AddSecondary(it, secID);
193 // G4cout <<"G4FissionLibrary::ApplyYourself: energy of prompt neutron " << i << " = " << it->GetKineticEnergy()<<G4endl;
194 }
195
196 // Build gammas, lorentz transform them, and add them to dynamic particle vector
197 for(G4int i=0; i<gPrompt; i++)
198 {
199 G4ReactionProduct * thePhoton = new G4ReactionProduct;
200 thePhoton->SetDefinition(G4Gamma::Gamma());
201 thePhoton->SetKineticEnergy(fe->getPhotonEnergy(i)*MeV);
202 momentum = thePhoton->GetTotalMomentum();
203 G4ThreeVector temp(momentum*fe->getPhotonDircosu(i),
204 momentum*fe->getPhotonDircosv(i),
205 momentum*fe->getPhotonDircosw(i));
206 thePhoton->SetMomentum( temp );
207 thePhoton->Lorentz(*thePhoton, -1.*theTarget);
208
209 G4DynamicParticle * it = new G4DynamicParticle;
210 it->SetDefinition(thePhoton->GetDefinition());
211 it->SetMomentum(thePhoton->GetMomentum());
212 // it->SetGlobalTime(fe->getPhotonAge(i)*second);
213 // G4cout <<"G4FissionLibrary::ApplyYourself: energy of prompt photon " << i << " = " << it->GetKineticEnergy()<<G4endl;
214 theResult.Get()->AddSecondary(it, secID);
215 delete thePhoton;
216 }
217 // G4cout <<"G4FissionLibrary::ApplyYourself: Number of secondaries = "<<theResult.GetNumberOfSecondaries()<< G4endl;
218 // G4cout <<"G4FissionLibrary::ApplyYourself: Number of induced prompt neutron = "<<nPrompt<<G4endl;
219 // G4cout <<"G4FissionLibrary::ApplyYourself: Number of induced prompt photons = "<<gPrompt<<G4endl;
220
221 // finally deal with local energy depositions.
222 G4double eDepByFragments = theEnergyRelease.GetFragmentKinetic();
223 theResult.Get()->SetLocalEnergyDeposit(eDepByFragments);
224 // G4cout << "G4FissionLibrary::local energy deposit" << eDepByFragments<<G4endl;
225 // clean up the primary neutron
226 theResult.Get()->SetStatusChange(stopAndKill);
227 return theResult.Get();
228 }
229
230 void G4FissionLibrary::SampleMult(const G4HadProjectile & theTrack, G4int* nPrompt,
231 G4int* gPrompt, G4double eKinetic)
232 {
233 G4double promptNeutronMulti = 0;
234 promptNeutronMulti = theFinalStateNeutrons.GetPrompt(eKinetic); // prompt nubar from Geant
235 G4double delayedNeutronMulti = 0;
236 delayedNeutronMulti = theFinalStateNeutrons.GetDelayed(eKinetic); // delayed nubar from Geant
237
238 G4double time = theTrack.GetGlobalTime()/second;
239 G4double totalNeutronMulti = theFinalStateNeutrons.GetMean(eKinetic);
240 if(delayedNeutronMulti==0&&promptNeutronMulti==0) {
241 // no data for prompt and delayed neutrons in Geant
242 // but there is perhaps data for the total neutron multiplicity, in which case
243 // we use it for prompt neutron emission
244 if (fe != 0) delete fe;
245 fe = new G4fissionEvent(theIsotope, time, totalNeutronMulti, eKinetic);
246 } else {
247 // prompt nubar != 0 || delayed nubar != 0
248 if (fe != 0) delete fe;
249 fe = new G4fissionEvent(theIsotope, time, promptNeutronMulti, eKinetic);
250 }
251 *nPrompt = fe->getNeutronNu();
252 if (*nPrompt == -1) *nPrompt = 0; // the fission library libFission.a has no data for neutrons
253 *gPrompt = fe->getPhotonNu();
254 if (*gPrompt == -1) *gPrompt = 0; // the fission library libFission.a has no data for gammas
255 }
256
257