| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. *
24 // ******************************************* 24 // ********************************************************************
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; 90 XSectionModel = 1;
91 FormFactor = 0; 91 FormFactor = 0;
92 particle = nullptr; 92 particle = nullptr;
93 mass=0.0; 93 mass=0.0;
94 currentMaterialIndex = -1; 94 currentMaterialIndex = -1;
95 95
96 Mottcross = new G4ScreeningMottCrossSection( 96 Mottcross = new G4ScreeningMottCrossSection();
97 //G4cout <<"## G4eSingleCoulombScatteringMod 97 //G4cout <<"## G4eSingleCoulombScatteringModel: " << this << " " << Mottcross << G4endl;
98 } 98 }
99 99
100 //....oooOO0OOooo........oooOO0OOooo........oo 100 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
101 101
102 G4eSingleCoulombScatteringModel::~G4eSingleCou 102 G4eSingleCoulombScatteringModel::~G4eSingleCoulombScatteringModel()
103 { 103 {
104 //G4cout <<"## G4eSingleCoulombScatteringMod 104 //G4cout <<"## G4eSingleCoulombScatteringModel: delete " << this << " " << Mottcross << G4endl;
105 delete Mottcross; 105 delete Mottcross;
106 } 106 }
107 107
108 //....oooOO0OOooo........oooOO0OOooo........oo 108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
109 109
110 void G4eSingleCoulombScatteringModel::Initiali 110 void G4eSingleCoulombScatteringModel::Initialise(const G4ParticleDefinition* p,
111 const G4DataVector& cuts) 111 const G4DataVector& cuts)
112 { 112 {
113 G4EmParameters* param = G4EmParameters::Inst 113 G4EmParameters* param = G4EmParameters::Instance();
114 114
115 SetupParticle(p); 115 SetupParticle(p);
116 currentCouple = nullptr; 116 currentCouple = nullptr;
117 currentMaterialIndex = -1; 117 currentMaterialIndex = -1;
118 //cosThetaMin = cos(PolarAngleLimit()); 118 //cosThetaMin = cos(PolarAngleLimit());
119 Mottcross->Initialise(p,cosThetaMin); 119 Mottcross->Initialise(p,cosThetaMin);
120 120
121 pCuts = &cuts; 121 pCuts = &cuts;
122 //G4ProductionCutsTable::GetProductionCutsTa 122 //G4ProductionCutsTable::GetProductionCutsTable()->GetEnergyCutsVector(3);
123 123
124 /* 124 /*
125 G4cout << "!!! G4eSingleCoulombScatteringMod 125 G4cout << "!!! G4eSingleCoulombScatteringModel::Initialise for "
126 << part->GetParticleName() << " cos( 126 << part->GetParticleName() << " cos(TetMin)= " << cosThetaMin
127 << " cos(TetMax)= " << cosThetaMax < 127 << " cos(TetMax)= " << cosThetaMax <<G4endl;
128 G4cout << "cut= " << (*pCuts)[0] << " cut1= 128 G4cout << "cut= " << (*pCuts)[0] << " cut1= " << (*pCuts)[1] << G4endl;
129 */ 129 */
130 130
131 if(!fParticleChange) { 131 if(!fParticleChange) {
132 fParticleChange = GetParticleChangeForGamm 132 fParticleChange = GetParticleChangeForGamma();
133 } 133 }
134 134
135 if(IsMaster()) { 135 if(IsMaster()) {
136 InitialiseElementSelectors(p,cuts); 136 InitialiseElementSelectors(p,cuts);
137 } 137 }
138 138
139 FormFactor=param->NuclearFormfactorType(); 139 FormFactor=param->NuclearFormfactorType();
140 140
141 //G4cout<<"NUCLEAR FORM FACTOR: "<<FormFacto 141 //G4cout<<"NUCLEAR FORM FACTOR: "<<FormFactor<<G4endl;
142 } 142 }
143 143
144 //....oooOO0OOooo........oooOO0OOooo........oo 144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145 145
146 void 146 void
147 G4eSingleCoulombScatteringModel::InitialiseLoc 147 G4eSingleCoulombScatteringModel::InitialiseLocal(const G4ParticleDefinition*,
148 148 G4VEmModel* masterModel)
149 { 149 {
150 SetElementSelectors(masterModel->GetElementS 150 SetElementSelectors(masterModel->GetElementSelectors());
151 } 151 }
152 152
153 //....oooOO0OOooo........oooOO0OOooo........oo 153 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
154 154
155 void G4eSingleCoulombScatteringModel::SetXSect 155 void G4eSingleCoulombScatteringModel::SetXSectionModel(const G4String& model)
156 { 156 {
157 if(model == "Fast" || model == "fast") 157 if(model == "Fast" || model == "fast") { XSectionModel=1; }
158 else if(model == "Precise" || model == "prec 158 else if(model == "Precise" || model == "precise") { XSectionModel=0; }
159 else { 159 else {
160 G4cout<<"G4eSingleCoulombScatteringModel W 160 G4cout<<"G4eSingleCoulombScatteringModel WARNING: "<<model
161 <<" is not a valid model name"<<G4endl; 161 <<" is not a valid model name"<<G4endl;
162 } 162 }
163 } 163 }
164 164
165 //....oooOO0OOooo........oooOO0OOooo........oo 165 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
166 166
167 G4double G4eSingleCoulombScatteringModel::Comp 167 G4double G4eSingleCoulombScatteringModel::ComputeCrossSectionPerAtom(
168 const G4Partic 168 const G4ParticleDefinition* p,
169 G4double kinEnergy, 169 G4double kinEnergy,
170 G4double Z, 170 G4double Z,
171 G4double , 171 G4double ,
172 G4double, 172 G4double,
173 G4double ) 173 G4double )
174 { 174 {
175 SetupParticle(p); 175 SetupParticle(p);
176 176
177 G4double cross =0.0; 177 G4double cross =0.0;
178 if(kinEnergy < lowEnergyLimit) return cross; 178 if(kinEnergy < lowEnergyLimit) return cross;
179 179
180 DefineMaterial(CurrentCouple()); 180 DefineMaterial(CurrentCouple());
181 181
182 //Total Cross section 182 //Total Cross section
183 Mottcross->SetupKinematic(kinEnergy, Z); 183 Mottcross->SetupKinematic(kinEnergy, Z);
184 cross = Mottcross->NuclearCrossSection(FormF 184 cross = Mottcross->NuclearCrossSection(FormFactor,XSectionModel);
185 185
186 //cout<< "Compute Cross Section....cross "<< 186 //cout<< "Compute Cross Section....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<" Z: "<<Z<<" kinEnergy: "<<kinEnergy<<endl;
187 187
188 //G4cout<<"Energy: "<<kinEnergy/MeV<<" Total 188 //G4cout<<"Energy: "<<kinEnergy/MeV<<" Total Cross: "<<cross<<G4endl;
189 return cross; 189 return cross;
190 } 190 }
191 191
192 //....oooOO0OOooo........oooOO0OOooo........oo 192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
193 193
194 void G4eSingleCoulombScatteringModel::SampleSe 194 void G4eSingleCoulombScatteringModel::SampleSecondaries(
195 std::vector<G4DynamicParticle*>* 195 std::vector<G4DynamicParticle*>* fvect,
196 const G4MaterialCutsCouple* coupl 196 const G4MaterialCutsCouple* couple,
197 const G4DynamicParticle* dp, 197 const G4DynamicParticle* dp,
198 G4double cutEnergy, 198 G4double cutEnergy,
199 G4double) 199 G4double)
200 { 200 {
201 G4double kinEnergy = dp->GetKineticEnergy(); 201 G4double kinEnergy = dp->GetKineticEnergy();
202 //cout<<"--- kinEnergy "<<kinEnergy<<endl; 202 //cout<<"--- kinEnergy "<<kinEnergy<<endl;
203 203
204 if(kinEnergy < lowEnergyLimit) return; 204 if(kinEnergy < lowEnergyLimit) return;
205 205
206 DefineMaterial(couple); 206 DefineMaterial(couple);
207 SetupParticle(dp->GetDefinition()); 207 SetupParticle(dp->GetDefinition());
208 208
209 // Choose nucleus 209 // Choose nucleus
210 //last two :cutEnergy= min e kinEnergy=max 210 //last two :cutEnergy= min e kinEnergy=max
211 currentElement = SelectTargetAtom(couple, pa 211 currentElement = SelectTargetAtom(couple, particle, kinEnergy,
212 dp->GetLogKinet 212 dp->GetLogKineticEnergy(), cutEnergy, kinEnergy);
213 G4int iz = currentElement->GetZasInt(); 213 G4int iz = currentElement->GetZasInt();
214 G4int ia = SelectIsotopeNumber(currentElemen 214 G4int ia = SelectIsotopeNumber(currentElement);
215 G4double mass2 = G4NucleiProperties::GetNucl 215 G4double mass2 = G4NucleiProperties::GetNuclearMass(ia, iz);
216 216
217 //G4cout<<"..Z: "<<Z<<" ..iz: "<<iz<<" ..ia: 217 //G4cout<<"..Z: "<<Z<<" ..iz: "<<iz<<" ..ia: "<<ia<<" ..mass2: "<<mass2<<G4endl;
218 218
219 Mottcross->SetupKinematic(kinEnergy, iz); 219 Mottcross->SetupKinematic(kinEnergy, iz);
220 G4double cross= Mottcross->NuclearCrossSecti 220 G4double cross= Mottcross->NuclearCrossSection(FormFactor,XSectionModel);
221 if(cross == 0.0) { return; } 221 if(cross == 0.0) { return; }
222 //cout<< "Energy: "<<kinEnergy/MeV<<" Z: "<< 222 //cout<< "Energy: "<<kinEnergy/MeV<<" Z: "<<Z<<"....cross "<<G4BestUnit(cross,"Surface") << " cm2 "<< cross/cm2 <<endl;
223 223
224 G4double z1 = Mottcross->GetScatteringAngle( 224 G4double z1 = Mottcross->GetScatteringAngle(FormFactor,XSectionModel);
225 G4double sint = sin(z1); 225 G4double sint = sin(z1);
226 G4double cost = cos(z1); 226 G4double cost = cos(z1);
227 G4double phi = twopi* G4UniformRand(); 227 G4double phi = twopi* G4UniformRand();
228 228
229 // kinematics in the Lab system 229 // kinematics in the Lab system
230 G4double ptot = sqrt(kinEnergy*(kinEnergy + 230 G4double ptot = sqrt(kinEnergy*(kinEnergy + 2.0*mass));
231 G4double e1 = mass + kinEnergy; 231 G4double e1 = mass + kinEnergy;
232 232
233 // Lab. system kinematics along projectile d 233 // Lab. system kinematics along projectile direction
234 G4LorentzVector v0 = G4LorentzVector(0, 0, p 234 G4LorentzVector v0 = G4LorentzVector(0, 0, ptot, e1+mass2);
235 G4LorentzVector v1 = G4LorentzVector(0, 0, p 235 G4LorentzVector v1 = G4LorentzVector(0, 0, ptot, e1);
236 G4ThreeVector bst = v0.boostVector(); 236 G4ThreeVector bst = v0.boostVector();
237 v1.boost(-bst); 237 v1.boost(-bst);
238 // CM projectile 238 // CM projectile
239 G4double momCM = v1.pz(); 239 G4double momCM = v1.pz();
240 240
241 // Momentum after scattering of incident par 241 // Momentum after scattering of incident particle
242 v1.setX(momCM*sint*cos(phi)); 242 v1.setX(momCM*sint*cos(phi));
243 v1.setY(momCM*sint*sin(phi)); 243 v1.setY(momCM*sint*sin(phi));
244 v1.setZ(momCM*cost); 244 v1.setZ(momCM*cost);
245 245
246 // CM--->Lab 246 // CM--->Lab
247 v1.boost(bst); 247 v1.boost(bst);
248 248
249 // Rotate to global system 249 // Rotate to global system
250 G4ThreeVector dir = dp->GetMomentumDirection 250 G4ThreeVector dir = dp->GetMomentumDirection();
251 G4ThreeVector newDirection = v1.vect().unit( 251 G4ThreeVector newDirection = v1.vect().unit();
252 newDirection.rotateUz(dir); 252 newDirection.rotateUz(dir);
253 253
254 fParticleChange->ProposeMomentumDirection(ne 254 fParticleChange->ProposeMomentumDirection(newDirection);
255 255
256 // recoil 256 // recoil
257 v0 -= v1; 257 v0 -= v1;
258 G4double trec = std::max(v0.e() - mass2, 0.0 258 G4double trec = std::max(v0.e() - mass2, 0.0);
259 G4double edep = 0.0; 259 G4double edep = 0.0;
260 260
261 G4double tcut = recoilThreshold; 261 G4double tcut = recoilThreshold;
262 262
263 //G4cout<<" Energy Transfered: "<<trec/eV<<G 263 //G4cout<<" Energy Transfered: "<<trec/eV<<G4endl;
264 264
265 if(pCuts) { 265 if(pCuts) {
266 tcut= std::max(tcut,(*pCuts)[currentMateri 266 tcut= std::max(tcut,(*pCuts)[currentMaterialIndex]);
267 //G4cout<<"Cuts: "<<(*pCuts)[currentMateri 267 //G4cout<<"Cuts: "<<(*pCuts)[currentMaterialIndex]/eV<<" eV"<<G4endl;
268 //G4cout<<"Threshold: "<<tcut/eV<<" eV"<<G 268 //G4cout<<"Threshold: "<<tcut/eV<<" eV"<<G4endl;
269 } 269 }
270 270
271 if(trec > tcut) { 271 if(trec > tcut) {
272 G4ParticleDefinition* ion = theIonTable->G 272 G4ParticleDefinition* ion = theIonTable->GetIon(iz, ia, 0);
273 newDirection = v0.vect().unit(); 273 newDirection = v0.vect().unit();
274 newDirection.rotateUz(dir); 274 newDirection.rotateUz(dir);
275 auto newdp = new G4DynamicParticle(ion, n << 275 G4DynamicParticle* newdp = new G4DynamicParticle(ion, newDirection, trec);
276 fvect->push_back(newdp); 276 fvect->push_back(newdp);
277 } else if(trec > 0.0) { 277 } else if(trec > 0.0) {
278 edep = trec; 278 edep = trec;
279 fParticleChange->ProposeNonIonizingEnergyD 279 fParticleChange->ProposeNonIonizingEnergyDeposit(edep);
280 } 280 }
281 281
282 // finelize primary energy and energy balanc 282 // finelize primary energy and energy balance
283 G4double finalT = v1.e() - mass; 283 G4double finalT = v1.e() - mass;
284 //G4cout<<"Final Energy: "<<finalT/eV<<G4end 284 //G4cout<<"Final Energy: "<<finalT/eV<<G4endl;
285 if(finalT <= lowEnergyLimit) { 285 if(finalT <= lowEnergyLimit) {
286 edep += finalT; 286 edep += finalT;
287 finalT = 0.0; 287 finalT = 0.0;
288 } 288 }
289 edep = std::max(edep, 0.0); 289 edep = std::max(edep, 0.0);
290 fParticleChange->SetProposedKineticEnergy(fi 290 fParticleChange->SetProposedKineticEnergy(finalT);
291 fParticleChange->ProposeLocalEnergyDeposit(e 291 fParticleChange->ProposeLocalEnergyDeposit(edep);
292 292
293 } 293 }
294 294
295 //....oooOO0OOooo........oooOO0OOooo........oo 295 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
296 296