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26 ////////////////////////////////////////////// <<
27 // <<
28 // File: G4LENDInelastic.cc <<
29 // Date: 24 March 2020 <<
30 // Author: Dennis Wright <<
31 // <<
32 // Description: model for inelastic scatterin <<
33 // gammas at energies of order 2 <<
34 // This model uses GIDI particle <<
35 // in spectrum mode. In this mo <<
36 // for each possible particle ty <<
37 // given interaction. Unlike Ge <<
38 // consideration of event-by-eve <<
39 // Indeed, forcing such conserva <<
40 // introduces correlations and d <<
41 // spectra which are not present <<
42 // <<
43 // In order to use GIDI data wit <<
44 // minimal event-by-event baryon <<
45 // enforced which allows deviati <<
46 // giving warnings. Neither cha <<
47 // conservation is enforced. Un <<
48 // fragment (n, p, d, t, alpha) <<
49 // after a large number of event <<
50 // conservation also approach th <<
51 // this limit. The mass, charge <<
52 // large fragments, however, are <<
53 // data very well. This is a re <<
54 // baryon number conservation an <<
55 // fragment spectra are correct. <<
56 // <<
57 ////////////////////////////////////////////// <<
58 <<
59 #include "G4LENDInelastic.hh" 26 #include "G4LENDInelastic.hh"
>> 27
60 #include "G4SystemOfUnits.hh" 28 #include "G4SystemOfUnits.hh"
61 #include "G4Nucleus.hh" 29 #include "G4Nucleus.hh"
62 #include "G4IonTable.hh" 30 #include "G4IonTable.hh"
63 #include <algorithm> <<
64 #include <random> <<
65 31
66 G4HadFinalState* G4LENDInelastic::ApplyYoursel << 32 G4HadFinalState * G4LENDInelastic::ApplyYourself(const G4HadProjectile& aTrack, G4Nucleus& aTarg )
67 <<
68 { 33 {
69 G4ThreeVector projMom = aTrack.Get4Momentum( << 34 //return preco->ApplyYourself( aTrack, aTarg );
70 G4double temp = aTrack.GetMaterial()->GetTem <<
71 35
72 G4int iZ = aTarg.GetZ_asInt(); << 36 G4ThreeVector proj_p = aTrack.Get4Momentum().vect();
73 G4int iA = aTarg.GetA_asInt(); <<
74 G4int iM = 0; <<
75 if (aTarg.GetIsotope() != nullptr) iM = aTar <<
76 <<
77 G4double ke = aTrack.GetKineticEnergy(); <<
78 <<
79 G4HadFinalState* theResult = &theParticleCha <<
80 theResult->Clear(); <<
81 <<
82 G4GIDI_target* aGIDITarget = <<
83 get_target_from_map(lend_manager->GetNucle <<
84 if (aGIDITarget == nullptr) { <<
85 // G4cout << " No target found " << G4endl; <<
86 theParticleChange.Clear(); <<
87 theParticleChange.SetStatusChange(isAlive) <<
88 theParticleChange.SetEnergyChange(aTrack.G <<
89 theParticleChange.SetMomentumChange(aTrack <<
90 return &theParticleChange; <<
91 } <<
92 // return returnUnchanged(aTrack, theResult); <<
93 <<
94 // Get GIDI final state products for givern <<
95 G4int loop(0); <<
96 G4int loopMax = 1000; <<
97 std::vector<G4GIDI_Product>* products; <<
98 do { <<
99 products = aGIDITarget->getOthersFinalStat <<
100 loop++; <<
101 } while (products == nullptr && loop < loopM <<
102 <<
103 // G4LENDInelastic accepts all light fragmen <<
104 // and removes any heavy fragments which cau <<
105 // Charge and energy non-conservation still <<
106 // of events, this improves on average. <<
107 <<
108 if (loop > loopMax - 1) { <<
109 // G4cout << " too many loops, return initi <<
110 <<
111 theParticleChange.Clear(); <<
112 theParticleChange.SetStatusChange(isAlive) <<
113 theParticleChange.SetEnergyChange(aTrack.G <<
114 theParticleChange.SetMomentumChange(aTrack <<
115 return &theParticleChange; <<
116 <<
117 // if (aTrack.GetDefinition() == G4Proton:: <<
118 // aTrack.GetDefinition() == G4Neutron: <<
119 // theResult = preco->ApplyYourself(aTra <<
120 // } else { <<
121 // theResult = returnUnchanged(aTrack, t <<
122 // } <<
123 <<
124 } else { <<
125 G4int iTotZ = iZ + aTrack.GetDefinition()- <<
126 G4int iTotA = iA + aTrack.GetDefinition()- <<
127 <<
128 // Loop over GIDI products and separate li <<
129 G4int GZtot(0); <<
130 G4int GAtot(0); <<
131 G4int productA(0); <<
132 G4int productZ(0); <<
133 std::vector<G4int> lightProductIndex; <<
134 std::vector<G4int> heavyProductIndex; <<
135 for (G4int i = 0; i < int( products->size( <<
136 productA = (*products)[i].A; <<
137 if (productA < 5) { <<
138 lightProductIndex.push_back(i); <<
139 GZtot += (*products)[i].Z; <<
140 GAtot += productA; <<
141 } else { <<
142 heavyProductIndex.push_back(i); <<
143 } <<
144 } <<
145 37
146 // Randomize order of heavies to correct s << 38 G4double temp = aTrack.GetMaterial()->GetTemperature();
147 // std::random_shuffle(heavyProductIndex.b << 39
148 // std::cout << " Heavy product index befo << 40 //G4int iZ = int ( aTarg.GetZ() );
149 // for (G4int i = 0; i < int(heavyProductI << 41 //G4int iA = int ( aTarg.GetN() );
150 // std::cout << std::endl; << 42 //migrate to integer A and Z (GetN_asInt returns number of neutrons in the nucleus since this)
151 << 43 G4int iZ = aTarg.GetZ_asInt();
152 auto rng = std::default_random_engine {}; << 44 G4int iA = aTarg.GetA_asInt();
153 std::shuffle(heavyProductIndex.begin(), he << 45 //G4int iM = aTarg.GetM_asInt();
154 << 46 G4int iM = 0;
155 // std::cout << " Heavy product index afte << 47 if ( aTarg.GetIsotope() != NULL ) {
156 // for (G4int i = 0; i < int(heavyProductI << 48 iM = aTarg.GetIsotope()->Getm();
157 // std::cout << std::endl; << 49 }
158 << 50 //G4cout << "target: Z = " << iZ << " N = " << iA << G4endl;
159 std::vector<G4int> savedHeavyIndex; << 51
160 G4int itest(0); << 52 G4double ke = aTrack.GetKineticEnergy();
161 for (G4int i = 0; i < int(heavyProductInde << 53 //G4cout << "projectile: KE = " << ke/MeV << " [MeV]" << G4endl;
162 itest = heavyProductIndex[i]; << 54
163 productA = (*products)[itest].A; << 55 G4HadFinalState* theResult = &theParticleChange;
164 productZ = (*products)[itest].Z; << 56 theResult->Clear();
165 if ((GAtot + productA <= iTotA) && (GZto << 57
166 savedHeavyIndex.push_back(itest); << 58 G4GIDI_target* aTarget = get_target_from_map( lend_manager->GetNucleusEncoding( iZ , iA , iM ) );
167 GZtot += productZ; << 59 if ( aTarget == NULL ) return returnUnchanged( aTrack , theResult );
168 GAtot += productA; << 60
169 } << 61 std::vector<G4GIDI_Product>* products;
170 } << 62 for ( G4int i = 0 ; i != 1024 ; i++ ) {
>> 63 products = aTarget->getOthersFinalState( ke*MeV, temp, MyRNG, NULL );
>> 64 if ( products != NULL ) break;
>> 65 }
>> 66 //return preco->ApplyYourself( aTrack, aTarg );
>> 67
>> 68 G4int iTotZ = iZ + aTrack.GetDefinition()->GetAtomicNumber();
>> 69 G4int iTotA = iA + aTrack.GetDefinition()->GetAtomicMass();
>> 70
>> 71 if ( products != NULL )
>> 72 {
>> 73 //G4cout << "Using LENDModel" << G4endl;
>> 74
>> 75 G4ThreeVector psum(0);
>> 76 G4bool needResidual = true;
>> 77 int totN = 0;
>> 78 int totZ = 0;
>> 79 for ( G4int j = 0; j < int( products->size() ); j++ )
>> 80 {
>> 81
>> 82 G4int jZ = (*products)[j].Z;
>> 83 G4int jA = (*products)[j].A;
>> 84 G4int jm = (*products)[j].m;
>> 85 //TK
>> 86 //We need coordination LEND *products)[j].m and G4IonTable(Z,A,m)
>> 87 //Excitation energy of isomer level is might (probably) different each other.
>> 88 //
>> 89
>> 90 //G4cout << "ZA = " << 1000 * (*products)[j].Z + (*products)[j].A << " EK = "
>> 91 // << (*products)[j].kineticEnergy
>> 92 // << " px " << (*products)[j].px
>> 93 // << " py " << (*products)[j].py
>> 94 // << " pz " << (*products)[j].pz
>> 95 // << G4endl;
>> 96
>> 97 iTotZ -= jZ;
>> 98 iTotA -= jA;
>> 99
>> 100 G4DynamicParticle* theSec = new G4DynamicParticle;
>> 101
>> 102 if ( jA == 1 && jZ == 1 )
>> 103 {
>> 104 theSec->SetDefinition( G4Proton::Proton() );
>> 105 totN += 1;
>> 106 totZ += 1;
>> 107 }
>> 108 else if ( jA == 1 && jZ == 0 )
>> 109 {
>> 110 theSec->SetDefinition( G4Neutron::Neutron() );
>> 111 totN += 1;
>> 112 }
>> 113 else if ( jZ > 0 )
>> 114 {
>> 115 if ( jA != 0 )
>> 116 {
>> 117 theSec->SetDefinition( G4IonTable::GetIonTable()->GetIon( jZ , jA , jm ) );
>> 118 totN += jA;
>> 119 totZ += jZ;
>> 120 }
>> 121 else
>> 122 {
>> 123 theSec->SetDefinition( G4IonTable::GetIonTable()->GetIon( jZ , iA+aTrack.GetDefinition()->GetAtomicMass()-totN , jm ) );
>> 124 iTotZ -= jZ;
>> 125 iTotA -= iA+aTrack.GetDefinition()->GetAtomicMass()-totN;
>> 126 needResidual=false;
>> 127 }
>> 128 }
>> 129 else
>> 130 {
>> 131 theSec->SetDefinition( G4Gamma::Gamma() );
>> 132 }
>> 133
>> 134 G4ThreeVector p( (*products)[j].px*MeV , (*products)[j].py*MeV , (*products)[j].pz*MeV );
>> 135 psum += p;
>> 136 if ( p.mag() == 0 ) p = proj_p - psum;
>> 137
>> 138 theSec->SetMomentum( p );
>> 139
>> 140 theResult->AddSecondary( theSec );
>> 141 }
>> 142
>> 143 if ( !( iTotZ == 0 && iTotA == 0 ) ) {
>> 144
>> 145 if ( iTotZ >= 0 && iTotA > 0 ) {
>> 146 if ( needResidual ) {
>> 147 G4DynamicParticle* residual = new G4DynamicParticle;
>> 148 if ( iTotZ > 0 ) {
>> 149 residual->SetDefinition( G4IonTable::GetIonTable()->GetIon( iTotZ , iTotA ) );
>> 150 } else if ( iTotA == 1 ) {
>> 151 residual->SetDefinition( G4Neutron::Neutron() );
>> 152 } else {
>> 153 //G4cout << "Charge or Baryon Number Error #3 iTotZ = " << iTotZ << ", iTotA = " << iTotA << G4endl;
>> 154 ;
>> 155 }
>> 156 residual->SetMomentum( proj_p - psum );
>> 157 theResult->AddSecondary( residual );
>> 158 } else {
>> 159 //G4cout << "Charge or Baryon Number Error #1 iTotZ = " << iTotZ << ", iTotA = " << iTotA << G4endl;
>> 160 ;
>> 161 }
>> 162 } else {
>> 163
>> 164 if ( needResidual ) {
>> 165 //G4cout << "Charge or Baryon Number Error #2 iTotZ = " << iTotZ << ", iTotA = " << iTotA << G4endl;
>> 166 ;
>> 167 }
>> 168 }
171 169
172 /* <<
173 G4cout << " saved light products = "; <<
174 for (G4int k = 0; k < int(lightProductInde <<
175 itest = lightProductIndex[k]; <<
176 G4cout << "(" << (*products)[itest].Z << <<
177 } <<
178 G4cout << G4endl; <<
179 <<
180 G4cout << " saved heavy products = "; <<
181 for (G4int k = 0; k < int(savedHeavyIndex. <<
182 itest = savedHeavyIndex[k]; <<
183 G4cout << "(" << (*products)[itest].Z << <<
184 } <<
185 G4cout << G4endl; <<
186 */ <<
187 // Now convert saved products to Geant4 pa <<
188 // Note that, at least for heavy fragments <<
189 // have slightly different values. <<
190 <<
191 G4DynamicParticle* theSec = nullptr; <<
192 G4ThreeVector Psum; <<
193 for (G4int i = 0; i < int(lightProductInde <<
194 itest = lightProductIndex[i]; <<
195 productZ = (*products)[itest].Z; <<
196 productA = (*products)[itest].A; <<
197 theSec = new G4DynamicParticle(); <<
198 if (productA == 1 && productZ == 0) { <<
199 theSec->SetDefinition(G4Neutron::Neutr <<
200 } else if (productA == 1 && productZ == <<
201 theSec->SetDefinition(G4Proton::Proton <<
202 } else if (productA == 2 && productZ == <<
203 theSec->SetDefinition(G4Deuteron::Deut <<
204 } else if (productA == 3 && productZ == <<
205 theSec->SetDefinition(G4Triton::Triton <<
206 } else if (productA == 4 && productZ == <<
207 theSec->SetDefinition(G4Alpha::Alpha() <<
208 } else { <<
209 theSec->SetDefinition(G4Gamma::Gamma() <<
210 } 170 }
211 171
212 G4ThreeVector momentum((*products)[itest << 172 }
213 (*products)[itest << 173 else {
214 (*products)[itest << 174 //G4cout << "Using PreCompoundModel" << G4endl;
215 Psum += momentum; << 175 if ( aTrack.GetDefinition() == G4Proton::Proton() ||
216 theSec->SetMomentum(momentum); << 176 aTrack.GetDefinition() == G4Neutron::Neutron() ) {
217 // theResult->AddSecondary(theSec); << 177 theResult = preco->ApplyYourself( aTrack, aTarg );
218 theParticleChange.AddSecondary(theSec, s <<
219 } <<
220 <<
221 G4int productM(0); <<
222 for (G4int i = 0; i < int(savedHeavyIndex. <<
223 itest = savedHeavyIndex[i]; <<
224 productZ = (*products)[itest].Z; <<
225 productA = (*products)[itest].A; <<
226 productM = (*products)[itest].m; <<
227 theSec = new G4DynamicParticle(); <<
228 theSec->SetDefinition(G4IonTable::GetIon <<
229 <<
230 <<
231 G4ThreeVector momentum((*products)[itest <<
232 (*products)[itest <<
233 (*products)[itest <<
234 Psum += momentum; <<
235 theSec->SetMomentum(momentum); <<
236 // theResult->AddSecondary(theSec); <<
237 theParticleChange.AddSecondary(theSec, s <<
238 } <<
239 <<
240 // Create heavy fragment if necessary to t <<
241 // Note: this step is only required to pre <<
242 // where "catastrophic" non-conserva <<
243 // The residual generated will not n <<
244 // occur in the actual reaction. <<
245 if (iTotA - GAtot > 1) { <<
246 theSec = new G4DynamicParticle(); <<
247 if (iTotZ == GZtot) { <<
248 // Special case when a nucleus of only <<
249 // Violate charge conservation and set <<
250 // G4cout << " Z = 1, A = "<< iTotA - <<
251 theSec->SetDefinition(G4IonTable::GetI <<
252 } else { 178 } else {
253 theSec->SetDefinition(G4IonTable::GetI << 179 return theResult;
254 } 180 }
255 theSec->SetMomentum(projMom - Psum); << 181 }
256 // theResult->AddSecondary(theSec); << 182 delete products;
257 theParticleChange.AddSecondary(theSec, s << 183
258 } << 184 theResult->SetStatusChange( stopAndKill );
259 } // loop OK << 185
260 << 186 return theResult;
261 delete products; << 187
262 // theResult->SetStatusChange( stopAndKill ); <<
263 theParticleChange.SetStatusChange( stopAndKi <<
264 // return theResult; <<
265 return &theParticleChange; <<
266 } 188 }
267 189