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25 // 25 //
26 // G4eSingleCoulombScatteringModel.cc 26 // G4eSingleCoulombScatteringModel.cc
27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class header file 29 // GEANT4 Class header file
30 // 30 //
31 // File name: G4eSingleCoulombScatteringMod 31 // File name: G4eSingleCoulombScatteringModel
32 // 32 //
33 // Author: Cristina Consolandi 33 // Author: Cristina Consolandi
34 // 34 //
35 // Creation date: 20.10.2012 35 // Creation date: 20.10.2012
36 // 36 //
37 // Class Description: 37 // Class Description:
38 // Single Scattering model for electron-nucle 38 // Single Scattering model for electron-nuclei interaction.
39 // Suitable for high energy electrons and low 39 // Suitable for high energy electrons and low scattering angles.
40 // 40 //
41 // 41 //
42 // Reference: 42 // Reference:
43 // M.J. Boschini et al. "Non Ionizing Ene 43 // M.J. Boschini et al. "Non Ionizing Energy Loss induced by Electrons
44 // in the Space Environment" Proc. of the 44 // in the Space Environment" Proc. of the 13th International Conference
45 // on Particle Physics and Advanced Techn 45 // on Particle Physics and Advanced Technology
46 // 46 //
47 // (13th ICPPAT, Como 3-7/10/2011), World Sci 47 // (13th ICPPAT, Como 3-7/10/2011), World Scientific (Singapore).
48 // Available at: http://arxiv.org/abs/1111.40 48 // Available at: http://arxiv.org/abs/1111.4042v4
49 // 49 //
50 // 50 //
51 // ------------------------------------------- 51 // -------------------------------------------------------------------
52 // 52 //
53 //....oooOO0OOooo........oooOO0OOooo........oo 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
54 54
55 55
56 #include "G4eSingleCoulombScatteringModel.hh" 56 #include "G4eSingleCoulombScatteringModel.hh"
57 #include "G4PhysicalConstants.hh" 57 #include "G4PhysicalConstants.hh"
58 #include "G4SystemOfUnits.hh" 58 #include "G4SystemOfUnits.hh"
59 #include "Randomize.hh" 59 #include "Randomize.hh"
60 #include "G4ParticleChangeForGamma.hh" 60 #include "G4ParticleChangeForGamma.hh"
61 #include "G4Proton.hh" 61 #include "G4Proton.hh"
62 #include "G4ProductionCutsTable.hh" 62 #include "G4ProductionCutsTable.hh"
63 #include "G4NucleiProperties.hh" 63 #include "G4NucleiProperties.hh"
64 #include "G4NistManager.hh" 64 #include "G4NistManager.hh"
65 #include "G4ParticleTable.hh" 65 #include "G4ParticleTable.hh"
66 #include "G4IonTable.hh" 66 #include "G4IonTable.hh"
67 67
68 #include "G4UnitsTable.hh" 68 #include "G4UnitsTable.hh"
69 #include "G4EmParameters.hh" 69 #include "G4EmParameters.hh"
70 70
71 //....oooOO0OOooo........oooOO0OOooo........oo 71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
72 72
73 using namespace std; 73 using namespace std;
74 74
75 G4eSingleCoulombScatteringModel::G4eSingleCoul 75 G4eSingleCoulombScatteringModel::G4eSingleCoulombScatteringModel(const G4String& nam)
76 : G4VEmModel(nam), 76 : G4VEmModel(nam),
77 cosThetaMin(1.0) 77 cosThetaMin(1.0)
78 { 78 {
79 fNistManager = G4NistManager::Instance(); 79 fNistManager = G4NistManager::Instance();
80 theIonTable = G4ParticleTable::GetParticleTa 80 theIonTable = G4ParticleTable::GetParticleTable()->GetIonTable();
81 fParticleChange = nullptr; 81 fParticleChange = nullptr;
82 82
83 pCuts=nullptr; 83 pCuts=nullptr;
84 currentMaterial = nullptr; 84 currentMaterial = nullptr;
85 currentElement = nullptr; 85 currentElement = nullptr;
86 currentCouple = nullptr; 86 currentCouple = nullptr;
87 87
88 lowEnergyLimit = 0*keV; 88 lowEnergyLimit = 0*keV;
89 recoilThreshold = 0.*eV; 89 recoilThreshold = 0.*eV;
90 XSectionModel = 1; <<
91 FormFactor = 0; 90 FormFactor = 0;
92 particle = nullptr; 91 particle = nullptr;
93 mass=0.0; 92 mass=0.0;
94 currentMaterialIndex = -1; 93 currentMaterialIndex = -1;
95 94
96 Mottcross = new G4ScreeningMottCrossSection( 95 Mottcross = new G4ScreeningMottCrossSection();
97 //G4cout <<"## G4eSingleCoulombScatteringMod <<
98 } 96 }
99 97
100 //....oooOO0OOooo........oooOO0OOooo........oo 98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
101 99
102 G4eSingleCoulombScatteringModel::~G4eSingleCou 100 G4eSingleCoulombScatteringModel::~G4eSingleCoulombScatteringModel()
103 { 101 {
104 //G4cout <<"## G4eSingleCoulombScatteringMod << 102 delete Mottcross;
105 delete Mottcross; <<
106 } 103 }
107 104
108 //....oooOO0OOooo........oooOO0OOooo........oo 105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
109 106
110 void G4eSingleCoulombScatteringModel::Initiali 107 void G4eSingleCoulombScatteringModel::Initialise(const G4ParticleDefinition* p,
111 const G4DataVector& cuts) 108 const G4DataVector& cuts)
112 { 109 {
113 G4EmParameters* param = G4EmParameters::Inst 110 G4EmParameters* param = G4EmParameters::Instance();
114 111
115 SetupParticle(p); 112 SetupParticle(p);
116 currentCouple = nullptr; 113 currentCouple = nullptr;
117 currentMaterialIndex = -1; 114 currentMaterialIndex = -1;
118 //cosThetaMin = cos(PolarAngleLimit()); 115 //cosThetaMin = cos(PolarAngleLimit());
119 Mottcross->Initialise(p,cosThetaMin); 116 Mottcross->Initialise(p,cosThetaMin);
120 117
121 pCuts = &cuts; 118 pCuts = &cuts;
122 //G4ProductionCutsTable::GetProductionCutsTa 119 //G4ProductionCutsTable::GetProductionCutsTable()->GetEnergyCutsVector(3);
123 120
124 /* 121 /*
125 G4cout << "!!! G4eSingleCoulombScatteringMod 122 G4cout << "!!! G4eSingleCoulombScatteringModel::Initialise for "
126 << part->GetParticleName() << " cos( 123 << part->GetParticleName() << " cos(TetMin)= " << cosThetaMin
127 << " cos(TetMax)= " << cosThetaMax < 124 << " cos(TetMax)= " << cosThetaMax <<G4endl;
128 G4cout << "cut= " << (*pCuts)[0] << " cut1= 125 G4cout << "cut= " << (*pCuts)[0] << " cut1= " << (*pCuts)[1] << G4endl;
129 */ 126 */
130 127
131 if(!fParticleChange) { 128 if(!fParticleChange) {
132 fParticleChange = GetParticleChangeForGamm 129 fParticleChange = GetParticleChangeForGamma();
133 } 130 }
134 131
135 if(IsMaster()) { 132 if(IsMaster()) {
136 InitialiseElementSelectors(p,cuts); 133 InitialiseElementSelectors(p,cuts);
137 } 134 }
138 135
139 FormFactor=param->NuclearFormfactorType(); 136 FormFactor=param->NuclearFormfactorType();
140 137
141 //G4cout<<"NUCLEAR FORM FACTOR: "<<FormFacto 138 //G4cout<<"NUCLEAR FORM FACTOR: "<<FormFactor<<G4endl;
142 } 139 }
143 140
144 //....oooOO0OOooo........oooOO0OOooo........oo << 141 void G4eSingleCoulombScatteringModel::InitialiseLocal(const G4ParticleDefinition*,
145 << 142 G4VEmModel* masterModel)
146 void <<
147 G4eSingleCoulombScatteringModel::InitialiseLoc <<
148 <<
149 { 143 {
150 SetElementSelectors(masterModel->GetElementS 144 SetElementSelectors(masterModel->GetElementSelectors());
151 } 145 }
152 <<
153 //....oooOO0OOooo........oooOO0OOooo........oo <<
154 <<
155 void G4eSingleCoulombScatteringModel::SetXSect <<
156 { <<
157 if(model == "Fast" || model == "fast") <<
158 else if(model == "Precise" || model == "prec <<
159 else { <<
160 G4cout<<"G4eSingleCoulombScatteringModel W <<
161 <<" is not a valid model name"<<G4endl; <<
162 } <<
163 } <<
164 <<
165 //....oooOO0OOooo........oooOO0OOooo........oo 146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
166 147
167 G4double G4eSingleCoulombScatteringModel::Comp 148 G4double G4eSingleCoulombScatteringModel::ComputeCrossSectionPerAtom(
168 const G4Partic 149 const G4ParticleDefinition* p,
169 G4double kinEnergy, 150 G4double kinEnergy,
170 G4double Z, 151 G4double Z,
171 G4double , 152 G4double ,
172 G4double, 153 G4double,
173 G4double ) 154 G4double )
174 { 155 {
175 SetupParticle(p); 156 SetupParticle(p);
176 157
177 G4double cross =0.0; 158 G4double cross =0.0;
178 if(kinEnergy < lowEnergyLimit) return cross; 159 if(kinEnergy < lowEnergyLimit) return cross;
179 160
180 DefineMaterial(CurrentCouple()); 161 DefineMaterial(CurrentCouple());
181 162
182 //Total Cross section 163 //Total Cross section
183 Mottcross->SetupKinematic(kinEnergy, Z); 164 Mottcross->SetupKinematic(kinEnergy, Z);
184 cross = Mottcross->NuclearCrossSection(FormF << 165 cross = Mottcross->NuclearCrossSection(FormFactor);
185 166
186 //cout<< "Compute Cross Section....cross "<< 167 //cout<< "Compute Cross Section....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<" Z: "<<Z<<" kinEnergy: "<<kinEnergy<<endl;
187 <<
188 //G4cout<<"Energy: "<<kinEnergy/MeV<<" Total <<
189 return cross; 168 return cross;
190 } 169 }
191 170
192 //....oooOO0OOooo........oooOO0OOooo........oo 171 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
193 172
194 void G4eSingleCoulombScatteringModel::SampleSe 173 void G4eSingleCoulombScatteringModel::SampleSecondaries(
195 std::vector<G4DynamicParticle*>* 174 std::vector<G4DynamicParticle*>* fvect,
196 const G4MaterialCutsCouple* coupl 175 const G4MaterialCutsCouple* couple,
197 const G4DynamicParticle* dp, 176 const G4DynamicParticle* dp,
198 G4double cutEnergy, 177 G4double cutEnergy,
199 G4double) 178 G4double)
200 { 179 {
201 G4double kinEnergy = dp->GetKineticEnergy(); 180 G4double kinEnergy = dp->GetKineticEnergy();
202 //cout<<"--- kinEnergy "<<kinEnergy<<endl; 181 //cout<<"--- kinEnergy "<<kinEnergy<<endl;
203 182
204 if(kinEnergy < lowEnergyLimit) return; 183 if(kinEnergy < lowEnergyLimit) return;
205 184
206 DefineMaterial(couple); 185 DefineMaterial(couple);
207 SetupParticle(dp->GetDefinition()); 186 SetupParticle(dp->GetDefinition());
208 187
209 // Choose nucleus 188 // Choose nucleus
210 //last two :cutEnergy= min e kinEnergy=max 189 //last two :cutEnergy= min e kinEnergy=max
211 currentElement = SelectTargetAtom(couple, pa << 190 currentElement = SelectRandomAtom(couple,particle,
212 dp->GetLogKinet << 191 kinEnergy,cutEnergy,kinEnergy);
213 G4int iz = currentElement->GetZasInt(); << 192
>> 193 G4double Z = currentElement->GetZ();
>> 194 G4int iz = G4int(Z);
214 G4int ia = SelectIsotopeNumber(currentElemen 195 G4int ia = SelectIsotopeNumber(currentElement);
215 G4double mass2 = G4NucleiProperties::GetNucl 196 G4double mass2 = G4NucleiProperties::GetNuclearMass(ia, iz);
216 197
217 //G4cout<<"..Z: "<<Z<<" ..iz: "<<iz<<" ..ia: 198 //G4cout<<"..Z: "<<Z<<" ..iz: "<<iz<<" ..ia: "<<ia<<" ..mass2: "<<mass2<<G4endl;
218 199
219 Mottcross->SetupKinematic(kinEnergy, iz); << 200 Mottcross->SetupKinematic(kinEnergy, Z);
220 G4double cross= Mottcross->NuclearCrossSecti << 201 G4double cross= Mottcross->NuclearCrossSection(FormFactor); //MODIFY TO LOAD TABLE
221 if(cross == 0.0) { return; } 202 if(cross == 0.0) { return; }
222 //cout<< "Energy: "<<kinEnergy/MeV<<" Z: "<< 203 //cout<< "Energy: "<<kinEnergy/MeV<<" Z: "<<Z<<"....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<endl;
223 204
224 G4double z1 = Mottcross->GetScatteringAngle( << 205 G4double z1 = Mottcross->GetScatteringAngle();
225 G4double sint = sin(z1); 206 G4double sint = sin(z1);
226 G4double cost = cos(z1); << 207 G4double cost = sqrt(1.0 - sint*sint);
227 G4double phi = twopi* G4UniformRand(); 208 G4double phi = twopi* G4UniformRand();
228 209
229 // kinematics in the Lab system 210 // kinematics in the Lab system
230 G4double ptot = sqrt(kinEnergy*(kinEnergy + << 211 G4double ptot = dp->GetTotalMomentum();
231 G4double e1 = mass + kinEnergy; << 212 G4double e1 = dp->GetTotalEnergy();
232 <<
233 // Lab. system kinematics along projectile d 213 // Lab. system kinematics along projectile direction
234 G4LorentzVector v0 = G4LorentzVector(0, 0, p << 214 G4LorentzVector v0 = G4LorentzVector(0, 0, ptot, e1);
235 G4LorentzVector v1 = G4LorentzVector(0, 0, p << 215 G4double bet = ptot/(v0.e() + mass2);
236 G4ThreeVector bst = v0.boostVector(); << 216 G4double gam = 1.0/sqrt((1.0 - bet)*(1.0 + bet));
237 v1.boost(-bst); << 217
238 // CM projectile << 218 //CM Projectile
239 G4double momCM = v1.pz(); << 219 G4double momCM = gam*(ptot - bet*e1);
240 << 220 G4double eCM = gam*(e1 - bet*ptot);
241 // Momentum after scattering of incident par << 221 //energy & momentum after scattering of incident particle
242 v1.setX(momCM*sint*cos(phi)); << 222 G4double pxCM = momCM*sint*cos(phi);
243 v1.setY(momCM*sint*sin(phi)); << 223 G4double pyCM = momCM*sint*sin(phi);
244 v1.setZ(momCM*cost); << 224 G4double pzCM = momCM*cost;
245 225
246 // CM--->Lab << 226 //CM--->Lab
247 v1.boost(bst); << 227 G4LorentzVector v1(pxCM , pyCM, gam*(pzCM + bet*eCM), gam*(eCM + bet*pzCM));
248 228
249 // Rotate to global system 229 // Rotate to global system
250 G4ThreeVector dir = dp->GetMomentumDirection 230 G4ThreeVector dir = dp->GetMomentumDirection();
251 G4ThreeVector newDirection = v1.vect().unit( 231 G4ThreeVector newDirection = v1.vect().unit();
252 newDirection.rotateUz(dir); 232 newDirection.rotateUz(dir);
253 233
254 fParticleChange->ProposeMomentumDirection(ne 234 fParticleChange->ProposeMomentumDirection(newDirection);
255 235
256 // recoil 236 // recoil
257 v0 -= v1; 237 v0 -= v1;
258 G4double trec = std::max(v0.e() - mass2, 0.0 << 238 G4double trec = v0.e();
259 G4double edep = 0.0; 239 G4double edep = 0.0;
260 240
261 G4double tcut = recoilThreshold; 241 G4double tcut = recoilThreshold;
262 242
263 //G4cout<<" Energy Transfered: "<<trec/eV<<G 243 //G4cout<<" Energy Transfered: "<<trec/eV<<G4endl;
264 244
265 if(pCuts) { 245 if(pCuts) {
266 tcut= std::max(tcut,(*pCuts)[currentMateri 246 tcut= std::max(tcut,(*pCuts)[currentMaterialIndex]);
267 //G4cout<<"Cuts: "<<(*pCuts)[currentMateri <<
268 //G4cout<<"Threshold: "<<tcut/eV<<" eV"<<G <<
269 } 247 }
270 248
271 if(trec > tcut) { 249 if(trec > tcut) {
272 G4ParticleDefinition* ion = theIonTable->G 250 G4ParticleDefinition* ion = theIonTable->GetIon(iz, ia, 0);
273 newDirection = v0.vect().unit(); 251 newDirection = v0.vect().unit();
274 newDirection.rotateUz(dir); 252 newDirection.rotateUz(dir);
275 auto newdp = new G4DynamicParticle(ion, n << 253 G4DynamicParticle* newdp = new G4DynamicParticle(ion, newDirection, trec);
276 fvect->push_back(newdp); 254 fvect->push_back(newdp);
277 } else if(trec > 0.0) { 255 } else if(trec > 0.0) {
278 edep = trec; 256 edep = trec;
279 fParticleChange->ProposeNonIonizingEnergyD 257 fParticleChange->ProposeNonIonizingEnergyDeposit(edep);
280 } 258 }
281 259
282 // finelize primary energy and energy balanc 260 // finelize primary energy and energy balance
283 G4double finalT = v1.e() - mass; 261 G4double finalT = v1.e() - mass;
284 //G4cout<<"Final Energy: "<<finalT/eV<<G4end 262 //G4cout<<"Final Energy: "<<finalT/eV<<G4endl;
285 if(finalT <= lowEnergyLimit) { 263 if(finalT <= lowEnergyLimit) {
286 edep += finalT; 264 edep += finalT;
287 finalT = 0.0; 265 finalT = 0.0;
288 } 266 }
289 edep = std::max(edep, 0.0); 267 edep = std::max(edep, 0.0);
290 fParticleChange->SetProposedKineticEnergy(fi 268 fParticleChange->SetProposedKineticEnergy(finalT);
291 fParticleChange->ProposeLocalEnergyDeposit(e 269 fParticleChange->ProposeLocalEnergyDeposit(edep);
292 270
293 } 271 }
294 272
295 //....oooOO0OOooo........oooOO0OOooo........oo 273 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
296 274