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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4eCoulombScatteringModel 32 // File name: G4eCoulombScatteringModel
33 // 33 //
34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko
35 // 35 //
36 // Creation date: 22.08.2005 36 // Creation date: 22.08.2005
37 // 37 //
38 // Modifications: V.Ivanchenko 38 // Modifications: V.Ivanchenko
39 // 39 //
40 // 40 //
41 // 41 //
42 // Class Description: 42 // Class Description:
43 // 43 //
44 // ------------------------------------------- 44 // -------------------------------------------------------------------
45 // 45 //
46 //....oooOO0OOooo........oooOO0OOooo........oo 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
47 //....oooOO0OOooo........oooOO0OOooo........oo 47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48 48
49 #include "G4eCoulombScatteringModel.hh" 49 #include "G4eCoulombScatteringModel.hh"
50 #include "G4PhysicalConstants.hh" 50 #include "G4PhysicalConstants.hh"
51 #include "G4SystemOfUnits.hh" 51 #include "G4SystemOfUnits.hh"
52 #include "Randomize.hh" 52 #include "Randomize.hh"
53 #include "G4DataVector.hh" 53 #include "G4DataVector.hh"
54 #include "G4ElementTable.hh" 54 #include "G4ElementTable.hh"
55 #include "G4ParticleChangeForGamma.hh" 55 #include "G4ParticleChangeForGamma.hh"
56 #include "G4Proton.hh" 56 #include "G4Proton.hh"
57 #include "G4ParticleTable.hh" 57 #include "G4ParticleTable.hh"
58 #include "G4IonTable.hh" 58 #include "G4IonTable.hh"
59 #include "G4ProductionCutsTable.hh" 59 #include "G4ProductionCutsTable.hh"
60 #include "G4NucleiProperties.hh" 60 #include "G4NucleiProperties.hh"
61 #include "G4Pow.hh" 61 #include "G4Pow.hh"
62 #include "G4NistManager.hh" 62 #include "G4NistManager.hh"
63 63
64 //....oooOO0OOooo........oooOO0OOooo........oo 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
65 65
66 using namespace std; 66 using namespace std;
67 67
68 G4eCoulombScatteringModel::G4eCoulombScatterin 68 G4eCoulombScatteringModel::G4eCoulombScatteringModel(G4bool combined)
69 : G4VEmModel("eCoulombScattering"), isCombin << 69 : G4VEmModel("eCoulombScattering"),
>> 70 cosThetaMin(1.0),
>> 71 cosThetaMax(-1.0),
>> 72 isCombined(combined)
70 { 73 {
>> 74 fParticleChange = nullptr;
71 fNistManager = G4NistManager::Instance(); 75 fNistManager = G4NistManager::Instance();
72 theIonTable = G4ParticleTable::GetParticleT 76 theIonTable = G4ParticleTable::GetParticleTable()->GetIonTable();
73 theProton = G4Proton::Proton(); 77 theProton = G4Proton::Proton();
>> 78 currentMaterial = nullptr;
>> 79 fixedCut = -1.0;
>> 80
>> 81 pCuts = nullptr;
>> 82
>> 83 recoilThreshold = 0.0; // by default does not work
>> 84
>> 85 particle = nullptr;
>> 86 currentCouple = nullptr;
74 87
75 wokvi = new G4WentzelOKandVIxSection(isCombi 88 wokvi = new G4WentzelOKandVIxSection(isCombined);
76 89
>> 90 currentMaterialIndex = 0;
77 mass = CLHEP::proton_mass_c2; 91 mass = CLHEP::proton_mass_c2;
>> 92 elecRatio = 0.0;
78 } 93 }
79 94
80 //....oooOO0OOooo........oooOO0OOooo........oo 95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
81 96
82 G4eCoulombScatteringModel::~G4eCoulombScatteri 97 G4eCoulombScatteringModel::~G4eCoulombScatteringModel()
83 { 98 {
84 delete wokvi; 99 delete wokvi;
85 } 100 }
86 101
87 //....oooOO0OOooo........oooOO0OOooo........oo 102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 103
89 void G4eCoulombScatteringModel::Initialise(con 104 void G4eCoulombScatteringModel::Initialise(const G4ParticleDefinition* part,
90 const G4DataVector& cuts) 105 const G4DataVector& cuts)
91 { 106 {
92 SetupParticle(part); 107 SetupParticle(part);
93 currentCouple = nullptr; 108 currentCouple = nullptr;
94 109
95 G4double tet = PolarAngleLimit(); <<
96 <<
97 // defined theta limit between single and mu 110 // defined theta limit between single and multiple scattering
98 if(isCombined) { 111 if(isCombined) {
99 if(tet >= CLHEP::pi) { cosThetaMin = -1.0; << 112 cosThetaMin = 1.0;
100 else if(tet > 0.0) { cosThetaMin = std::co << 113 G4double tet = PolarAngleLimit();
101 << 114 if(tet >= pi) { cosThetaMin = -1.0; }
102 // single scattering without multiple << 115 else if(tet > 0.0) { cosThetaMin = cos(tet); }
103 } else if(tet > 0.0) { <<
104 cosThetaMin = std::cos(std::min(tet, CLHEP <<
105 } 116 }
106 117
107 wokvi->Initialise(part, cosThetaMin); 118 wokvi->Initialise(part, cosThetaMin);
108 pCuts = &cuts; 119 pCuts = &cuts;
109 /* 120 /*
110 G4cout << "G4eCoulombScatteringModel::Initia 121 G4cout << "G4eCoulombScatteringModel::Initialise for "
111 << part->GetParticleName() << " 1-cos(Tet 122 << part->GetParticleName() << " 1-cos(TetMin)= " << 1.0 - cosThetaMin
112 << " 1-cos(TetMax)= " << 1. - cosThetaMax 123 << " 1-cos(TetMax)= " << 1. - cosThetaMax << G4endl;
113 G4cout << "cut[0]= " << (*pCuts)[0] << G4end 124 G4cout << "cut[0]= " << (*pCuts)[0] << G4endl;
114 */ 125 */
115 if(nullptr == fParticleChange) { << 126 if(!fParticleChange) {
116 fParticleChange = GetParticleChangeForGamm 127 fParticleChange = GetParticleChangeForGamma();
117 } 128 }
118 if(IsMaster() && mass < GeV && part->GetPart 129 if(IsMaster() && mass < GeV && part->GetParticleName() != "GenericIon") {
119 InitialiseElementSelectors(part, cuts); 130 InitialiseElementSelectors(part, cuts);
120 } 131 }
121 } 132 }
122 133
123 //....oooOO0OOooo........oooOO0OOooo........oo 134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
124 135
125 void G4eCoulombScatteringModel::InitialiseLoca 136 void G4eCoulombScatteringModel::InitialiseLocal(const G4ParticleDefinition*,
126 G4VEmModel* masterModel) 137 G4VEmModel* masterModel)
127 { 138 {
128 SetElementSelectors(masterModel->GetElementS 139 SetElementSelectors(masterModel->GetElementSelectors());
129 } 140 }
130 141
131 //....oooOO0OOooo........oooOO0OOooo........oo 142 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
132 143
133 G4double 144 G4double
134 G4eCoulombScatteringModel::MinPrimaryEnergy(co 145 G4eCoulombScatteringModel::MinPrimaryEnergy(const G4Material* material,
135 const G4ParticleDefinition* part 146 const G4ParticleDefinition* part,
136 G4double) 147 G4double)
137 { 148 {
138 SetupParticle(part); 149 SetupParticle(part);
139 150
140 // define cut using cuts for proton 151 // define cut using cuts for proton
141 G4double cut = 152 G4double cut =
142 std::max(recoilThreshold, (*pCuts)[Current 153 std::max(recoilThreshold, (*pCuts)[CurrentCouple()->GetIndex()]);
143 154
144 // find out lightest element 155 // find out lightest element
145 const G4ElementVector* theElementVector = ma 156 const G4ElementVector* theElementVector = material->GetElementVector();
146 std::size_t nelm = material->GetNumberOfElem << 157 G4int nelm = material->GetNumberOfElements();
147 158
148 // select lightest element 159 // select lightest element
149 G4int Z = 300; 160 G4int Z = 300;
150 for (std::size_t j=0; j<nelm; ++j) { << 161 for (G4int j=0; j<nelm; ++j) {
151 Z = std::min(Z,(*theElementVector)[j]->Get 162 Z = std::min(Z,(*theElementVector)[j]->GetZasInt());
152 } 163 }
153 G4int A = G4lrint(fNistManager->GetAtomicMas 164 G4int A = G4lrint(fNistManager->GetAtomicMassAmu(Z));
154 G4double targetMass = G4NucleiProperties::Ge 165 G4double targetMass = G4NucleiProperties::GetNuclearMass(A, Z);
155 G4double t = std::max(cut, 0.5*(cut + sqrt(2 166 G4double t = std::max(cut, 0.5*(cut + sqrt(2*cut*targetMass)));
156 167
157 return t; 168 return t;
158 } 169 }
159 170
160 //....oooOO0OOooo........oooOO0OOooo........oo 171 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
161 172
162 G4double G4eCoulombScatteringModel::ComputeCro 173 G4double G4eCoulombScatteringModel::ComputeCrossSectionPerAtom(
163 const G4ParticleDefinition* p, 174 const G4ParticleDefinition* p,
164 G4double kinEnergy, 175 G4double kinEnergy,
165 G4double Z, G4double, 176 G4double Z, G4double,
166 G4double cutEnergy, G4double) 177 G4double cutEnergy, G4double)
167 { 178 {
168 /* << 179 /*
169 G4cout << "### G4eCoulombScatteringModel::Co 180 G4cout << "### G4eCoulombScatteringModel::ComputeCrossSectionPerAtom for "
170 << p->GetParticleName()<<" Z= "<<Z<<" e(MeV 181 << p->GetParticleName()<<" Z= "<<Z<<" e(MeV)= "<< kinEnergy/MeV
171 << G4endl; 182 << G4endl;
172 */ 183 */
173 G4double cross = 0.0; 184 G4double cross = 0.0;
174 elecRatio = 0.0; 185 elecRatio = 0.0;
175 if(p != particle) { SetupParticle(p); } 186 if(p != particle) { SetupParticle(p); }
176 187
177 // cross section is set to zero to avoid pro 188 // cross section is set to zero to avoid problems in sample secondary
178 if(kinEnergy <= 0.0) { return cross; } 189 if(kinEnergy <= 0.0) { return cross; }
179 DefineMaterial(CurrentCouple()); 190 DefineMaterial(CurrentCouple());
180 G4double costmin = wokvi->SetupKinematic(kin 191 G4double costmin = wokvi->SetupKinematic(kinEnergy, currentMaterial);
181 192
182 //G4cout << "cosThetaMax= "<<cosThetaMax<<" 193 //G4cout << "cosThetaMax= "<<cosThetaMax<<" costmin= "<<costmin<< G4endl;
183 194
184 if(cosThetaMax < costmin) { 195 if(cosThetaMax < costmin) {
185 G4int iz = G4lrint(Z); 196 G4int iz = G4lrint(Z);
186 G4double cut = (0.0 < fixedCut) ? fixedCut 197 G4double cut = (0.0 < fixedCut) ? fixedCut : cutEnergy;
187 costmin = wokvi->SetupTarget(iz, cut); 198 costmin = wokvi->SetupTarget(iz, cut);
188 //G4cout << "SetupTarget: Z= " << iz << " 199 //G4cout << "SetupTarget: Z= " << iz << " cut= " << cut << " "
189 // << costmin << G4endl; 200 // << costmin << G4endl;
190 G4double costmax = (1 == iz && particle == 201 G4double costmax = (1 == iz && particle == theProton && cosThetaMax < 0.0)
191 ? 0.0 : cosThetaMax; 202 ? 0.0 : cosThetaMax;
192 if(costmin > costmax) { 203 if(costmin > costmax) {
193 cross = wokvi->ComputeNuclearCrossSectio 204 cross = wokvi->ComputeNuclearCrossSection(costmin, costmax)
194 + wokvi->ComputeElectronCrossSection(c 205 + wokvi->ComputeElectronCrossSection(costmin, costmax);
195 } 206 }
196 /* 207 /*
197 if(p->GetParticleName() == "e-") 208 if(p->GetParticleName() == "e-")
198 G4cout << "Z= " << Z << " e(MeV)= " << kin 209 G4cout << "Z= " << Z << " e(MeV)= " << kinEnergy/MeV
199 << " cross(b)= " << cross/barn << " 1-cos 210 << " cross(b)= " << cross/barn << " 1-costmin= " << 1-costmin
200 << " 1-costmax= " << 1-costmax 211 << " 1-costmax= " << 1-costmax
201 << " 1-cosThetaMax= " << 1-cosThetaMax 212 << " 1-cosThetaMax= " << 1-cosThetaMax
202 << " " << currentMaterial->GetName() 213 << " " << currentMaterial->GetName()
203 << G4endl; 214 << G4endl;
204 */ 215 */
205 } 216 }
206 //G4cout << "====== cross= " << cross << G4e 217 //G4cout << "====== cross= " << cross << G4endl;
207 return cross; 218 return cross;
208 } 219 }
209 220
210 //....oooOO0OOooo........oooOO0OOooo........oo 221 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
211 222
212 void G4eCoulombScatteringModel::SampleSecondar 223 void G4eCoulombScatteringModel::SampleSecondaries(
213 std::vector<G4DynamicParticle* 224 std::vector<G4DynamicParticle*>* fvect,
214 const G4MaterialCutsCouple* couple, 225 const G4MaterialCutsCouple* couple,
215 const G4DynamicParticle* dp, 226 const G4DynamicParticle* dp,
216 G4double cutEnergy, 227 G4double cutEnergy,
217 G4double) 228 G4double)
218 { 229 {
219 G4double kinEnergy = dp->GetKineticEnergy(); 230 G4double kinEnergy = dp->GetKineticEnergy();
220 SetupParticle(dp->GetDefinition()); 231 SetupParticle(dp->GetDefinition());
221 DefineMaterial(couple); 232 DefineMaterial(couple);
222 /* 233 /*
223 G4cout << "G4eCoulombScatteringModel::Sample 234 G4cout << "G4eCoulombScatteringModel::SampleSecondaries e(MeV)= "
224 << kinEnergy << " " << particle->GetPart 235 << kinEnergy << " " << particle->GetParticleName()
225 << " cut= " << cutEnergy<< G4endl; 236 << " cut= " << cutEnergy<< G4endl;
226 */ 237 */
227 // Choose nucleus 238 // Choose nucleus
228 G4double cut = (0.0 < fixedCut) ? fixedCut : 239 G4double cut = (0.0 < fixedCut) ? fixedCut : cutEnergy;
229 240
230 wokvi->SetupKinematic(kinEnergy, currentMate 241 wokvi->SetupKinematic(kinEnergy, currentMaterial);
231 242
232 const G4Element* currentElement = SelectTarg 243 const G4Element* currentElement = SelectTargetAtom(couple,particle,kinEnergy,
233 dp->Get 244 dp->GetLogKineticEnergy(),cut,kinEnergy);
234 G4int iz = currentElement->GetZasInt(); 245 G4int iz = currentElement->GetZasInt();
235 246
236 G4double costmin = wokvi->SetupTarget(iz, cu 247 G4double costmin = wokvi->SetupTarget(iz, cut);
237 G4double costmax = (1 == iz && particle == t 248 G4double costmax = (1 == iz && particle == theProton && cosThetaMax < 0.0)
238 ? 0.0 : cosThetaMax; 249 ? 0.0 : cosThetaMax;
239 if(costmin <= costmax) { return; } 250 if(costmin <= costmax) { return; }
240 251
241 G4double cross = wokvi->ComputeNuclearCrossS 252 G4double cross = wokvi->ComputeNuclearCrossSection(costmin, costmax);
242 G4double ecross = wokvi->ComputeElectronCros 253 G4double ecross = wokvi->ComputeElectronCrossSection(costmin, costmax);
243 G4double ratio = ecross/(cross + ecross); 254 G4double ratio = ecross/(cross + ecross);
244 255
245 G4int ia = SelectIsotopeNumber(currentElemen 256 G4int ia = SelectIsotopeNumber(currentElement);
246 G4double targetMass = G4NucleiProperties::Ge 257 G4double targetMass = G4NucleiProperties::GetNuclearMass(ia, iz);
247 wokvi->SetTargetMass(targetMass); 258 wokvi->SetTargetMass(targetMass);
248 259
249 G4ThreeVector newDirection = 260 G4ThreeVector newDirection =
250 wokvi->SampleSingleScattering(costmin, cos 261 wokvi->SampleSingleScattering(costmin, costmax, ratio);
251 G4double cost = newDirection.z(); 262 G4double cost = newDirection.z();
252 /* 263 /*
253 G4cout << "SampleSec: e(MeV)= " << kinEn 264 G4cout << "SampleSec: e(MeV)= " << kinEnergy/MeV
254 << " 1-costmin= " << 1-costmin 265 << " 1-costmin= " << 1-costmin
255 << " 1-costmax= " << 1-costmax 266 << " 1-costmax= " << 1-costmax
256 << " 1-cost= " << 1-cost 267 << " 1-cost= " << 1-cost
257 << " ratio= " << ratio 268 << " ratio= " << ratio
258 << G4endl; 269 << G4endl;
259 */ 270 */
260 G4ThreeVector direction = dp->GetMomentumDir 271 G4ThreeVector direction = dp->GetMomentumDirection();
261 newDirection.rotateUz(direction); 272 newDirection.rotateUz(direction);
262 273
263 fParticleChange->ProposeMomentumDirection(ne 274 fParticleChange->ProposeMomentumDirection(newDirection);
264 275
265 // recoil sampling assuming a small recoil 276 // recoil sampling assuming a small recoil
266 // and first order correction to primary 4-m 277 // and first order correction to primary 4-momentum
267 G4double mom2 = wokvi->GetMomentumSquare(); 278 G4double mom2 = wokvi->GetMomentumSquare();
268 G4double trec = mom2*(1.0 - cost) 279 G4double trec = mom2*(1.0 - cost)
269 /(targetMass + (mass + kinEnergy)*(1.0 - c 280 /(targetMass + (mass + kinEnergy)*(1.0 - cost));
270 281
271 // the check likely not needed 282 // the check likely not needed
272 trec = std::min(trec, kinEnergy); 283 trec = std::min(trec, kinEnergy);
273 G4double finalT = kinEnergy - trec; 284 G4double finalT = kinEnergy - trec;
274 G4double edep = 0.0; 285 G4double edep = 0.0;
275 /* 286 /*
276 G4cout<<"G4eCoulombScatteringModel: finalT 287 G4cout<<"G4eCoulombScatteringModel: finalT= "<<finalT<<" Trec= "
277 <<trec << " Z= " << iz << " A= " << ia 288 <<trec << " Z= " << iz << " A= " << ia
278 << " tcut(keV)= " << (*pCuts)[currentMater 289 << " tcut(keV)= " << (*pCuts)[currentMaterialIndex]/keV << G4endl;
279 */ 290 */
280 G4double tcut = recoilThreshold; 291 G4double tcut = recoilThreshold;
281 if(pCuts) { tcut= std::max(tcut,(*pCuts)[cur 292 if(pCuts) { tcut= std::max(tcut,(*pCuts)[currentMaterialIndex]); }
282 293
283 if(trec > tcut) { 294 if(trec > tcut) {
284 G4ParticleDefinition* ion = theIonTable->G 295 G4ParticleDefinition* ion = theIonTable->GetIon(iz, ia, 0);
285 G4ThreeVector dir = (direction*sqrt(mom2) 296 G4ThreeVector dir = (direction*sqrt(mom2) -
286 newDirection*sqrt(finalT*(2*mass + fina 297 newDirection*sqrt(finalT*(2*mass + finalT))).unit();
287 auto newdp = new G4DynamicParticle(ion, di << 298 G4DynamicParticle* newdp = new G4DynamicParticle(ion, dir, trec);
288 fvect->push_back(newdp); 299 fvect->push_back(newdp);
289 } else { 300 } else {
290 edep = trec; 301 edep = trec;
291 fParticleChange->ProposeNonIonizingEnergyD 302 fParticleChange->ProposeNonIonizingEnergyDeposit(edep);
292 } 303 }
293 304
294 // finelize primary energy and energy bala 305 // finelize primary energy and energy balance
295 // this threshold may be applied only beca 306 // this threshold may be applied only because for low-enegry
296 // e+e- msc model is applied 307 // e+e- msc model is applied
297 if(finalT < 0.0) { 308 if(finalT < 0.0) {
298 edep += finalT; 309 edep += finalT;
299 finalT = 0.0; 310 finalT = 0.0;
300 } 311 }
301 edep = std::max(edep, 0.0); 312 edep = std::max(edep, 0.0);
302 fParticleChange->SetProposedKineticEnergy(fi 313 fParticleChange->SetProposedKineticEnergy(finalT);
303 fParticleChange->ProposeLocalEnergyDeposit(e 314 fParticleChange->ProposeLocalEnergyDeposit(edep);
304 } 315 }
305 316
306 //....oooOO0OOooo........oooOO0OOooo........oo 317 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
307 318