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25 // 25 //
>> 26 // $Id: G4hCoulombScatteringModel.cc 93567 2015-10-26 14:51:41Z gcosmo $
>> 27 //
26 // ------------------------------------------- 28 // -------------------------------------------------------------------
27 // 29 //
28 // GEANT4 Class file 30 // GEANT4 Class file
29 // 31 //
30 // 32 //
31 // File name: G4hCoulombScatteringModel 33 // File name: G4hCoulombScatteringModel
32 // 34 //
33 // Author: Vladimir Ivanchenko 35 // Author: Vladimir Ivanchenko
34 // 36 //
35 // Creation date: 08.06.2012 from G4eCoulombSc 37 // Creation date: 08.06.2012 from G4eCoulombScatteringModel
36 // 38 //
37 // Modifications: 39 // Modifications:
38 // 40 //
39 // 41 //
40 // Class Description: 42 // Class Description:
41 // 43 //
42 // ------------------------------------------- 44 // -------------------------------------------------------------------
43 // 45 //
44 //....oooOO0OOooo........oooOO0OOooo........oo 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
45 //....oooOO0OOooo........oooOO0OOooo........oo 47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
46 48
47 #include "G4hCoulombScatteringModel.hh" 49 #include "G4hCoulombScatteringModel.hh"
48 #include "G4PhysicalConstants.hh" 50 #include "G4PhysicalConstants.hh"
49 #include "G4SystemOfUnits.hh" 51 #include "G4SystemOfUnits.hh"
50 #include "Randomize.hh" 52 #include "Randomize.hh"
51 #include "G4DataVector.hh" 53 #include "G4DataVector.hh"
52 #include "G4ElementTable.hh" 54 #include "G4ElementTable.hh"
53 #include "G4ParticleChangeForGamma.hh" 55 #include "G4ParticleChangeForGamma.hh"
54 #include "G4Proton.hh" 56 #include "G4Proton.hh"
55 #include "G4ParticleTable.hh" 57 #include "G4ParticleTable.hh"
56 #include "G4IonTable.hh" 58 #include "G4IonTable.hh"
57 #include "G4ProductionCutsTable.hh" 59 #include "G4ProductionCutsTable.hh"
58 #include "G4NucleiProperties.hh" 60 #include "G4NucleiProperties.hh"
59 #include "G4Pow.hh" 61 #include "G4Pow.hh"
>> 62 #include "G4LossTableManager.hh"
>> 63 #include "G4LossTableBuilder.hh"
60 #include "G4NistManager.hh" 64 #include "G4NistManager.hh"
61 65
62 //....oooOO0OOooo........oooOO0OOooo........oo 66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
63 67
>> 68 using namespace std;
>> 69
64 G4hCoulombScatteringModel::G4hCoulombScatterin 70 G4hCoulombScatteringModel::G4hCoulombScatteringModel(G4bool combined)
65 : G4VEmModel("hCoulombScattering"), 71 : G4VEmModel("hCoulombScattering"),
66 cosThetaMin(1.0), 72 cosThetaMin(1.0),
67 cosThetaMax(-1.0), 73 cosThetaMax(-1.0),
68 isCombined(combined) 74 isCombined(combined)
69 { 75 {
70 fParticleChange = nullptr; << 76 fParticleChange = 0;
71 fNistManager = G4NistManager::Instance(); 77 fNistManager = G4NistManager::Instance();
72 theIonTable = G4ParticleTable::GetParticleT 78 theIonTable = G4ParticleTable::GetParticleTable()->GetIonTable();
73 theProton = G4Proton::Proton(); 79 theProton = G4Proton::Proton();
74 currentMaterial = nullptr; << 80 currentMaterial = 0;
75 fixedCut = -1.0; 81 fixedCut = -1.0;
76 82
77 pCuts = nullptr; << 83 pCuts = 0;
78 84
79 recoilThreshold = 0.0; // by default does no << 85 recoilThreshold = 0.*keV; // by default does not work
80 86
81 particle = nullptr; << 87 particle = 0;
82 currentCouple = nullptr; << 88 currentCouple = 0;
83 wokvi = new G4WentzelVIRelXSection(); << 89 wokvi = new G4WentzelVIRelXSection(combined);
84 90
85 currentMaterialIndex = 0; 91 currentMaterialIndex = 0;
86 mass = CLHEP::proton_mass_c2; << 92 mass = proton_mass_c2;
87 elecRatio = 0.0; 93 elecRatio = 0.0;
88 } 94 }
89 95
90 //....oooOO0OOooo........oooOO0OOooo........oo 96 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
91 97
92 G4hCoulombScatteringModel::~G4hCoulombScatteri 98 G4hCoulombScatteringModel::~G4hCoulombScatteringModel()
93 { 99 {
94 delete wokvi; 100 delete wokvi;
95 } 101 }
96 102
97 //....oooOO0OOooo........oooOO0OOooo........oo 103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
98 104
99 void G4hCoulombScatteringModel::Initialise(con 105 void G4hCoulombScatteringModel::Initialise(const G4ParticleDefinition* part,
100 const G4DataVector& cuts) 106 const G4DataVector& cuts)
101 { 107 {
102 SetupParticle(part); 108 SetupParticle(part);
103 currentCouple = nullptr; << 109 currentCouple = 0;
104 110
105 // defined theta limit between single and mu << 111 if(isCombined) {
106 isCombined = true; << 112 cosThetaMin = 1.0;
107 G4double tet = PolarAngleLimit(); << 113 G4double tet = PolarAngleLimit();
108 << 114 if(tet >= pi) { cosThetaMin = -1.0; }
109 if(tet <= 0.0) { << 115 else if(tet > 0.0) { cosThetaMin = cos(tet); }
110 cosThetaMin = 1.0; <<
111 isCombined = false; <<
112 } else if(tet >= CLHEP::pi) { <<
113 cosThetaMin = -1.0; <<
114 } else { <<
115 cosThetaMin = std::cos(tet); <<
116 } 116 }
117 117
118 wokvi->Initialise(part, cosThetaMin); 118 wokvi->Initialise(part, cosThetaMin);
119 /* 119 /*
120 G4cout << "G4hCoulombScatteringModel: " << p 120 G4cout << "G4hCoulombScatteringModel: " << particle->GetParticleName()
121 << " 1-cos(ThetaLimit)= " << 1 - cos 121 << " 1-cos(ThetaLimit)= " << 1 - cosThetaMin
122 << " cos(thetaMax)= " << cosThetaMax 122 << " cos(thetaMax)= " << cosThetaMax
123 << G4endl; 123 << G4endl;
124 */ 124 */
125 pCuts = &cuts; 125 pCuts = &cuts;
126 //G4ProductionCutsTable::GetProductionCutsTa 126 //G4ProductionCutsTable::GetProductionCutsTable()->GetEnergyCutsVector(3);
127 /* 127 /*
128 G4cout << "!!! G4hCoulombScatteringModel::In 128 G4cout << "!!! G4hCoulombScatteringModel::Initialise for "
129 << part->GetParticleName() << " cos(TetM 129 << part->GetParticleName() << " cos(TetMin)= " << cosThetaMin
130 << " cos(TetMax)= " << cosThetaMax <<G4e 130 << " cos(TetMax)= " << cosThetaMax <<G4endl;
131 G4cout << "cut= " << (*pCuts)[0] << " cut1= 131 G4cout << "cut= " << (*pCuts)[0] << " cut1= " << (*pCuts)[1] << G4endl;
132 */ 132 */
133 if(!fParticleChange) { 133 if(!fParticleChange) {
134 fParticleChange = GetParticleChangeForGamm 134 fParticleChange = GetParticleChangeForGamma();
135 } 135 }
136 if(IsMaster() && mass < CLHEP::GeV && part-> << 136 if(IsMaster() && mass < GeV && part->GetParticleName() != "GenericIon") {
137 InitialiseElementSelectors(part, cuts); 137 InitialiseElementSelectors(part, cuts);
138 } 138 }
139 } 139 }
140 140
141 //....oooOO0OOooo........oooOO0OOooo........oo 141 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
142 142
143 void G4hCoulombScatteringModel::InitialiseLoca 143 void G4hCoulombScatteringModel::InitialiseLocal(const G4ParticleDefinition*,
144 G4VEmModel* masterModel) 144 G4VEmModel* masterModel)
145 { 145 {
146 SetElementSelectors(masterModel->GetElementS 146 SetElementSelectors(masterModel->GetElementSelectors());
147 } 147 }
148 148
149 //....oooOO0OOooo........oooOO0OOooo........oo 149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
150 150
151 G4double 151 G4double
152 G4hCoulombScatteringModel::MinPrimaryEnergy(co 152 G4hCoulombScatteringModel::MinPrimaryEnergy(const G4Material* material,
153 const G4ParticleDefinition* part 153 const G4ParticleDefinition* part,
154 G4double) 154 G4double)
155 { 155 {
156 SetupParticle(part); 156 SetupParticle(part);
157 157
158 // define cut using cuts for proton 158 // define cut using cuts for proton
159 G4double cut = 159 G4double cut =
160 std::max(recoilThreshold, (*pCuts)[Current 160 std::max(recoilThreshold, (*pCuts)[CurrentCouple()->GetIndex()]);
161 161
162 // find out lightest element 162 // find out lightest element
163 const G4ElementVector* theElementVector = ma 163 const G4ElementVector* theElementVector = material->GetElementVector();
164 std::size_t nelm = material->GetNumberOfElem << 164 G4int nelm = material->GetNumberOfElements();
165 165
166 // select lightest element 166 // select lightest element
167 G4int Z = 300; 167 G4int Z = 300;
168 for (std::size_t j=0; j<nelm; ++j) { << 168 for (G4int j=0; j<nelm; ++j) {
169 Z = std::min(Z,(*theElementVector)[j]->Get << 169 G4int iz = G4lrint((*theElementVector)[j]->GetZ());
>> 170 if(iz < Z) { Z = iz; }
170 } 171 }
171 G4int A = G4lrint(fNistManager->GetAtomicMas 172 G4int A = G4lrint(fNistManager->GetAtomicMassAmu(Z));
172 G4double targetMass = G4NucleiProperties::Ge 173 G4double targetMass = G4NucleiProperties::GetNuclearMass(A, Z);
173 G4double t = std::max(cut, 0.5*(cut + std::s << 174 G4double t = std::max(cut, 0.5*(cut + sqrt(2*cut*targetMass)));
174 175
175 return t; 176 return t;
176 } 177 }
177 178
178 //....oooOO0OOooo........oooOO0OOooo........oo 179 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
179 180
180 G4double G4hCoulombScatteringModel::ComputeCro 181 G4double G4hCoulombScatteringModel::ComputeCrossSectionPerAtom(
181 const G4ParticleDefinition* p, 182 const G4ParticleDefinition* p,
182 G4double kinEnergy, 183 G4double kinEnergy,
183 G4double Z, G4double, 184 G4double Z, G4double,
184 G4double cutEnergy, G4double) 185 G4double cutEnergy, G4double)
185 { 186 {
186 //G4cout << "### G4hCoulombScatteringModel:: 187 //G4cout << "### G4hCoulombScatteringModel::ComputeCrossSectionPerAtom for "
187 //<< p->GetParticleName()<<" Z= "<<Z<<" e(Me 188 //<< p->GetParticleName()<<" Z= "<<Z<<" e(MeV)= "<< kinEnergy/MeV << G4endl;
188 G4double cross = 0.0; 189 G4double cross = 0.0;
189 elecRatio = 0.0; 190 elecRatio = 0.0;
190 if(p != particle) { SetupParticle(p); } 191 if(p != particle) { SetupParticle(p); }
191 192
192 // cross section is set to zero to avoid pro 193 // cross section is set to zero to avoid problems in sample secondary
193 if(kinEnergy <= 0.0) { return cross; } 194 if(kinEnergy <= 0.0) { return cross; }
194 DefineMaterial(CurrentCouple()); 195 DefineMaterial(CurrentCouple());
195 196
196 G4int iz = G4lrint(Z); << 197 G4int iz = G4int(Z);
197 G4double tmass = (1 == iz) ? proton_mass_c2 << 198 G4double tmass = proton_mass_c2;
198 fNistManager->GetAtomicMassAmu(iz)*amu_c2; << 199 if(1 < iz) {
199 wokvi->SetTargetMass(tmass); << 200 tmass = fNistManager->GetAtomicMassAmu(iz)*amu_c2;
200 << 201 }
201 G4double costmin = 202 G4double costmin =
202 wokvi->SetupKinematic(kinEnergy, currentMa << 203 wokvi->SetupKinematic(kinEnergy, currentMaterial, cutEnergy, tmass);
203 <<
204 if(cosThetaMax < costmin) { 204 if(cosThetaMax < costmin) {
205 G4double cut = (0.0 < fixedCut) ? fixedCut << 205 G4double cut = cutEnergy;
>> 206 if(fixedCut > 0.0) { cut = fixedCut; }
206 costmin = wokvi->SetupTarget(iz, cut); 207 costmin = wokvi->SetupTarget(iz, cut);
207 G4double costmax = << 208 G4double costmax = cosThetaMax;
208 (1 == iz && particle == theProton && cos << 209 if(iz == 1 && costmax < 0.0 && particle == theProton) {
209 ? 0.0 : cosThetaMax; << 210 costmax = 0.0;
>> 211 }
210 if(costmin > costmax) { 212 if(costmin > costmax) {
211 cross = wokvi->ComputeNuclearCrossSectio 213 cross = wokvi->ComputeNuclearCrossSection(costmin, costmax)
212 + wokvi->ComputeElectronCrossSection(costmin 214 + wokvi->ComputeElectronCrossSection(costmin, costmax);
213 } 215 }
214 /* 216 /*
215 if(p->GetParticleName() == "mu+") 217 if(p->GetParticleName() == "mu+")
216 G4cout << "e(MeV)= " << kinEnergy/MeV << " c 218 G4cout << "e(MeV)= " << kinEnergy/MeV << " cross(b)= " << cross/barn
217 << " 1-costmin= " << 1-costmin 219 << " 1-costmin= " << 1-costmin
218 << " 1-costmax= " << 1-costmax 220 << " 1-costmax= " << 1-costmax
219 << " 1-cosThetaMax= " << 1-cosThetaMax 221 << " 1-cosThetaMax= " << 1-cosThetaMax
220 << G4endl; 222 << G4endl;
221 */ 223 */
222 } 224 }
223 return cross; 225 return cross;
224 } 226 }
225 227
226 //....oooOO0OOooo........oooOO0OOooo........oo 228 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
227 229
228 void G4hCoulombScatteringModel::SampleSecondar 230 void G4hCoulombScatteringModel::SampleSecondaries(
229 std::vector<G4DynamicParticle* 231 std::vector<G4DynamicParticle*>* fvect,
230 const G4MaterialCutsCouple* couple, 232 const G4MaterialCutsCouple* couple,
231 const G4DynamicParticle* dp, 233 const G4DynamicParticle* dp,
232 G4double cutEnergy, 234 G4double cutEnergy,
233 G4double) 235 G4double)
234 { 236 {
235 G4double kinEnergy = dp->GetKineticEnergy(); 237 G4double kinEnergy = dp->GetKineticEnergy();
236 SetupParticle(dp->GetDefinition()); 238 SetupParticle(dp->GetDefinition());
237 DefineMaterial(couple); 239 DefineMaterial(couple);
238 240
239 // Choose nucleus 241 // Choose nucleus
240 G4double cut = (0.0 < fixedCut) ? fixedCut : <<
241 <<
242 const G4Element* elm = SelectRandomAtom(coup 242 const G4Element* elm = SelectRandomAtom(couple,particle,
243 kinEnergy,cut,kinEnergy); << 243 kinEnergy,cutEnergy,kinEnergy);
244 244
245 G4int iz = elm->GetZasInt(); << 245 G4double Z = elm->GetZ();
>> 246
>> 247 G4int iz = G4int(Z);
246 G4int ia = SelectIsotopeNumber(elm); 248 G4int ia = SelectIsotopeNumber(elm);
247 G4double mass2 = G4NucleiProperties::GetNucl 249 G4double mass2 = G4NucleiProperties::GetNuclearMass(ia, iz);
248 250
249 wokvi->SetTargetMass(mass2); << 251 wokvi->SetupKinematic(kinEnergy, currentMaterial, cutEnergy, mass2);
250 wokvi->SetupKinematic(kinEnergy, currentMate << 252 G4double costmin = wokvi->SetupTarget(iz, cutEnergy);
251 G4double costmin = wokvi->SetupTarget(iz, cu << 253 G4double costmax = cosThetaMax;
252 G4double costmax = (1 == iz && particle == t << 254 if(iz == 1 && costmax < 0.0 && particle == theProton) {
253 ? 0.0 : cosThetaMax; << 255 costmax = 0.0;
>> 256 }
>> 257
254 if(costmin <= costmax) { return; } 258 if(costmin <= costmax) { return; }
255 <<
256 G4double cross = wokvi->ComputeNuclearCrossS 259 G4double cross = wokvi->ComputeNuclearCrossSection(costmin, costmax);
257 G4double ecross = wokvi->ComputeElectronCros 260 G4double ecross = wokvi->ComputeElectronCrossSection(costmin, costmax);
258 G4double ratio = ecross/(cross + ecross); 261 G4double ratio = ecross/(cross + ecross);
259 262
260 G4ThreeVector newDirection = 263 G4ThreeVector newDirection =
261 wokvi->SampleSingleScattering(costmin, cos 264 wokvi->SampleSingleScattering(costmin, costmax, ratio);
262 265
263 // kinematics in the Lab system 266 // kinematics in the Lab system
264 G4double ptot = std::sqrt(kinEnergy*(kinEner << 267 G4double ptot = dp->GetTotalMomentum();
265 G4double e1 = mass + kinEnergy; << 268 G4double e1 = dp->GetTotalEnergy();
266 269
267 // Lab. system kinematics along projectile d 270 // Lab. system kinematics along projectile direction
268 G4LorentzVector v0 = G4LorentzVector(0, 0, p << 271 G4LorentzVector v0 = G4LorentzVector(0, 0, ptot, e1 + mass2);
269 G4LorentzVector v1 = G4LorentzVector(0, 0, p << 272 G4double bet = ptot/v0.e();
270 G4ThreeVector bst = v0.boostVector(); << 273 G4double gam = 1.0/sqrt((1.0 - bet)*(1.0 + bet));
271 v1.boost(-bst); << 274
272 // CM projectile 275 // CM projectile
273 G4double momCM = v1.pz(); << 276 G4double momCM = gam*(ptot - bet*e1);
274 << 277 G4double eCM = gam*(e1 - bet*ptot);
275 // Momentum after scattering of incident par << 278 // energy & momentum after scattering of incident particle
276 v1.setX(momCM*newDirection.x()); << 279 G4double pxCM = momCM*newDirection.x();
277 v1.setY(momCM*newDirection.y()); << 280 G4double pyCM = momCM*newDirection.y();
278 v1.setZ(momCM*newDirection.z()); << 281 G4double pzCM = momCM*newDirection.z();
279 282
280 // CM--->Lab 283 // CM--->Lab
281 v1.boost(bst); << 284 G4LorentzVector v1(pxCM , pyCM, gam*(pzCM + bet*eCM), gam*(eCM + bet*pzCM));
282 285
283 G4ThreeVector dir = dp->GetMomentumDirection 286 G4ThreeVector dir = dp->GetMomentumDirection();
284 newDirection = v1.vect().unit(); 287 newDirection = v1.vect().unit();
285 newDirection.rotateUz(dir); 288 newDirection.rotateUz(dir);
286 289
287 fParticleChange->ProposeMomentumDirection(ne 290 fParticleChange->ProposeMomentumDirection(newDirection);
288 291
289 // recoil 292 // recoil
290 v0 -= v1; 293 v0 -= v1;
291 G4double trec = std::max(v0.e() - mass2, 0.0 << 294 G4double trec = v0.e() - mass2;
292 G4double edep = 0.0; 295 G4double edep = 0.0;
293 296
294 G4double tcut = recoilThreshold; 297 G4double tcut = recoilThreshold;
295 if(pCuts) { tcut= std::max(tcut,(*pCuts)[cur << 298 if(pCuts) {
>> 299 tcut= std::max(tcut,(*pCuts)[currentMaterialIndex]);
>> 300 //G4cout<<" tcut eV "<<tcut/eV<<endl;
>> 301 }
296 302
297 if(trec > tcut) { 303 if(trec > tcut) {
298 G4ParticleDefinition* ion = theIonTable->G 304 G4ParticleDefinition* ion = theIonTable->GetIon(iz, ia, 0);
299 newDirection = v0.vect().unit(); 305 newDirection = v0.vect().unit();
300 newDirection.rotateUz(dir); 306 newDirection.rotateUz(dir);
301 auto newdp = new G4DynamicParticle(ion, ne << 307 G4DynamicParticle* newdp = new G4DynamicParticle(ion, newDirection, trec);
302 fvect->push_back(newdp); 308 fvect->push_back(newdp);
303 } else if(trec > 0.0) { 309 } else if(trec > 0.0) {
304 edep = trec; 310 edep = trec;
305 fParticleChange->ProposeNonIonizingEnergyD 311 fParticleChange->ProposeNonIonizingEnergyDeposit(edep);
306 } 312 }
307 313
308 // finelize primary energy and energy balanc 314 // finelize primary energy and energy balance
309 G4double finalT = v1.e() - mass; 315 G4double finalT = v1.e() - mass;
310 if(finalT < 0.0) { 316 if(finalT < 0.0) {
311 edep += finalT; 317 edep += finalT;
312 finalT = 0.0; 318 finalT = 0.0;
313 } 319 }
314 edep = std::max(edep, 0.0); 320 edep = std::max(edep, 0.0);
315 fParticleChange->SetProposedKineticEnergy(fi 321 fParticleChange->SetProposedKineticEnergy(finalT);
316 fParticleChange->ProposeLocalEnergyDeposit(e 322 fParticleChange->ProposeLocalEnergyDeposit(edep);
317 } 323 }
318 324
319 //....oooOO0OOooo........oooOO0OOooo........oo 325 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
320 326