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25 //
26 // neutron_hp -- source file
27 // J.P. Wellisch, Nov-1996
28 // A prototype of the low energy neutron transport model.
29 //
30 // 070523 bug fix for G4FPE_DEBUG on by A. Howard ( and T. Koi)
31 //
32 // P. Arce, June-2014 Conversion neutron_hp to particle_hp
33 // V. Ivanchenko, July-2023 Basic revision of particle HP classes
34 //
35
36 #include "G4ParticleHPChannelList.hh"
37
38 #include "G4Element.hh"
39 #include "G4HadFinalState.hh"
40 #include "G4HadProjectile.hh"
41 #include "G4ParticleHPFinalState.hh"
42 #include "G4ParticleHPManager.hh"
43 #include "G4ParticleHPThermalBoost.hh"
44 #include "G4Neutron.hh"
45
46 G4ParticleHPChannelList::G4ParticleHPChannelList(G4int n, G4ParticleDefinition* p)
47 {
48 nChannels = n;
49 theChannels = new G4ParticleHPChannel*[n];
50 theProjectile = (nullptr == p) ? G4Neutron::Neutron() : p;
51 }
52
53 G4ParticleHPChannelList::~G4ParticleHPChannelList()
54 {
55 if (theChannels != nullptr) {
56 for (G4int i = 0; i < nChannels; ++i) {
57 delete theChannels[i];
58 }
59 delete[] theChannels;
60 }
61 }
62
63 G4HadFinalState* G4ParticleHPChannelList::ApplyYourself(const G4Element*,
64 const G4HadProjectile& aTrack)
65 {
66 G4ParticleHPThermalBoost aThermalE;
67 G4int i, ii;
68
69 // decide on the isotope
70 G4int numberOfIsos(0);
71 for (ii = 0; ii < nChannels; ++ii) {
72 numberOfIsos = theChannels[ii]->GetNiso();
73 if (numberOfIsos != 0) break;
74 }
75 auto running = new G4double[numberOfIsos];
76 running[0] = 0;
77 for (i = 0; i < numberOfIsos; i++) {
78 if (i != 0) running[i] = running[i - 1];
79 for (ii = 0; ii < nChannels; ii++) {
80 if (theChannels[ii]->HasAnyData(i)) {
81 running[i] += theChannels[ii]->GetWeightedXsec(
82 aThermalE.GetThermalEnergy(aTrack, theChannels[ii]->GetN(i), theChannels[ii]->GetZ(i),
83 aTrack.GetMaterial()->GetTemperature()), i);
84 }
85 }
86 }
87 G4int isotope = nChannels - 1;
88 G4double random = G4UniformRand();
89 for (i = 0; i < numberOfIsos; ++i) {
90 isotope = i;
91 if (running[numberOfIsos - 1] != 0)
92 if (random < running[i] / running[numberOfIsos - 1]) break;
93 }
94 delete[] running;
95
96 // decide on the channel
97 running = new G4double[nChannels];
98 running[0] = 0;
99 G4int targA = -1; // For production of unChanged
100 G4int targZ = -1;
101 for (i = 0; i < nChannels; i++) {
102 if (i != 0) running[i] = running[i - 1];
103 if (theChannels[i]->HasAnyData(isotope)) {
104 targA = (G4int)theChannels[i]->GetN(isotope); // Will be simply used the last valid value
105 targZ = (G4int)theChannels[i]->GetZ(isotope);
106 running[i] += theChannels[i]->GetFSCrossSection(
107 aThermalE.GetThermalEnergy(aTrack, targA, targZ, aTrack.GetMaterial()->GetTemperature()),
108 isotope);
109 targA = (G4int)theChannels[i]->GetN(isotope); // Will be simply used the last valid value
110 targZ = (G4int)theChannels[i]->GetZ(isotope);
111 // G4cout << " G4ParticleHPChannelList " << i << " targA " << targA << " targZ " << targZ <<
112 //" running " << running[i] << G4endl;
113 }
114 }
115
116 // TK120607
117 if (running[nChannels - 1] == 0) {
118 // This happened usually by the miss match between the cross section data and model
119 if (targA == -1 && targZ == -1) {
120 throw G4HadronicException(
121 __FILE__, __LINE__,
122 "ParticleHP model encounter lethal discrepancy with cross section data");
123 }
124
125 // TK121106
126 G4cout << "Warning from NeutronHP: could not find proper reaction channel. This may cause by "
127 "inconsistency between cross section and model. Unchanged final states are returned."
128 << G4endl;
129 unChanged.Clear();
130
131 // For Ep Check create unchanged final state including rest target
132 G4ParticleDefinition* targ_pd = G4IonTable::GetIonTable()->GetIon(targZ, targA, 0.0);
133 auto targ_dp = new G4DynamicParticle(targ_pd, G4ThreeVector(1, 0, 0), 0.0);
134 unChanged.SetEnergyChange(aTrack.GetKineticEnergy());
135 unChanged.SetMomentumChange(aTrack.Get4Momentum().vect().unit());
136 unChanged.AddSecondary(targ_dp);
137 // TK121106
138 G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->SetTargA(targA);
139 G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->SetTargZ(targZ);
140 delete[] running;
141 return &unChanged;
142 }
143 // TK120607
144
145 G4int lChan = 0;
146 random = G4UniformRand();
147 for (i = 0; i < nChannels; i++) {
148 lChan = i;
149 if (running[nChannels - 1] != 0)
150 if (random < running[i] / running[nChannels - 1]) break;
151 }
152 delete[] running;
153 #ifdef G4PHPDEBUG
154 if (G4ParticleHPManager::GetInstance()->GetDEBUG())
155 G4cout << " G4ParticleHPChannelList SELECTED ISOTOPE " << isotope << " SELECTED CHANNEL "
156 << lChan << G4endl;
157 #endif
158 return theChannels[lChan]->ApplyYourself(aTrack, isotope);
159 }
160
161 G4HadFinalState* G4ParticleHPChannelList::ApplyYourself( G4int isotope, G4int anZ, G4int anA, const G4HadProjectile & aTrack ) {
162 // do not choose Z and A again and go to selection of channel
163 G4ParticleHPThermalBoost aThermalE;
164 G4int i;
165 G4double random;
166 // decide on the channel
167 G4double* running = new G4double[nChannels];
168 running[0] = 0.0;
169 // targA and targZ does not set to -1
170 G4int targA = anA;
171 G4int targZ = anZ;
172 G4double energy = aThermalE.GetThermalEnergy( aTrack, targA, targZ, aTrack.GetMaterial()->GetTemperature() );
173 for ( i = 0; i < nChannels; i++ ) {
174 if ( i != 0 ) running[i] = running[i-1];
175 if ( theChannels[i]->HasAnyData( isotope ) ) {
176 targA = (G4int) theChannels[i]->GetN( isotope ); // Will be simply used the last valid value
177 targZ = (G4int) theChannels[i]->GetZ( isotope );
178 running[i] += theChannels[i]->GetFSCrossSection( energy, isotope );
179 }
180 }
181 if ( running[nChannels-1] == 0 ) {
182 // This happened usually by the miss match between the cross section data and model
183 if ( targA == -1 && targZ == -1 ) {
184 throw G4HadronicException( __FILE__, __LINE__, "ParticleHP model encounter lethal discrepancy with cross section data" );
185 }
186 G4cout << "Warning from NeutronHP: could not find proper reaction channel. "
187 << "This may be caused by inconsistency between cross section and model. "
188 << "Unchanged final states are returned." << G4endl;
189 unChanged.Clear();
190 // For Ep Check create unchanged final state including rest target
191 G4ParticleDefinition* targ_pd = G4IonTable::GetIonTable()->GetIon( targZ, targA, 0.0 );
192 G4DynamicParticle* targ_dp = new G4DynamicParticle( targ_pd, G4ThreeVector(1.0, 0.0, 0.0), 0.0 );
193 unChanged.SetEnergyChange( aTrack.GetKineticEnergy() );
194 unChanged.SetMomentumChange( aTrack.Get4Momentum().vect().unit() );
195 unChanged.AddSecondary( targ_dp );
196 G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->SetTargA( targA );
197 G4ParticleHPManager::GetInstance()->GetReactionWhiteBoard()->SetTargZ( targZ );
198 delete [] running;
199 return &unChanged;
200 }
201 G4int lChan = 0;
202 random = G4UniformRand();
203 for ( i = 0; i < nChannels; i++ ) {
204 lChan = i;
205 if ( running[nChannels-1] != 0 ) if ( random < running[i]/running[nChannels-1] ) break;
206 }
207 delete [] running;
208 #ifdef G4PHPDEBUG
209 if ( G4FindDataDir( "G4ParticleHPDebug" ) != nullptr ) G4cout << " G4ParticleHPChannelList SELECTED ISOTOPE " << isotope
210 << " SELECTED CHANNEL " << lChan << G4endl;
211 #endif
212 return theChannels[lChan]->ApplyYourself( aTrack, isotope );
213 }
214
215 void G4ParticleHPChannelList::Init(G4Element* anElement, const G4String& dirName,
216 G4ParticleDefinition* projectile)
217 {
218 theDir = dirName;
219 // G4cout << theDir << G4endl;
220 theElement = anElement;
221 // G4cout << theElement->GetName() << G4endl;
222 theProjectile = projectile;
223 }
224
225 void G4ParticleHPChannelList::Register(G4ParticleHPFinalState* theFS, const G4String& aName)
226 {
227 theChannels[idx] = new G4ParticleHPChannel(theProjectile);
228 theChannels[idx]->Init(theElement, theDir, aName);
229 theChannels[idx]->Register(theFS);
230 ++idx;
231 }
232
233 void G4ParticleHPChannelList::DumpInfo()
234 {
235 G4cout << "================================================================" << G4endl;
236 G4cout << " Element: " << theElement->GetName() << G4endl;
237 G4cout << " Number of channels: " << nChannels << G4endl;
238 G4cout << " Projectile: " << theProjectile->GetParticleName() << G4endl;
239 G4cout << " Directory name: " << theDir << G4endl;
240 for (G4int i = 0; i < nChannels; ++i) {
241 if (theChannels[i]->HasDataInAnyFinalState()) {
242 G4cout << "----------------------------------------------------------------" << G4endl;
243 theChannels[i]->DumpInfo();
244 G4cout << "----------------------------------------------------------------" << G4endl;
245 }
246 }
247 G4cout << "================================================================" << G4endl;
248 }
249