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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: G4EmStandardPhysics_option4
30 //
31 // Author: V.Ivanchenko 28.09.2012 from Option3 physics constructor
32 //
33 // Modified:
34 //
35 // 22.09.17 M.Novak: change msc model for e-/e+ below 100 MeV from Urban+
36 // UseDistanceToBoundary stepping to GS + Mott-correction + error
37 // -free stepping.
38 //
39 //----------------------------------------------------------------------------
40 //
41
42 #include "G4EmStandardPhysics_option4.hh"
43
44 #include "G4SystemOfUnits.hh"
45 #include "G4ParticleDefinition.hh"
46 #include "G4LossTableManager.hh"
47 #include "G4EmParameters.hh"
48 #include "G4EmBuilder.hh"
49 #include "G4EmStandUtil.hh"
50
51 #include "G4ComptonScattering.hh"
52 #include "G4GammaConversion.hh"
53 #include "G4PhotoElectricEffect.hh"
54 #include "G4RayleighScattering.hh"
55 #include "G4PEEffectFluoModel.hh"
56 #include "G4KleinNishinaModel.hh"
57 #include "G4BetheHeitler5DModel.hh"
58 #include "G4LivermorePhotoElectricModel.hh"
59 #include "G4LivermorePolarizedRayleighModel.hh"
60 #include "G4PhotoElectricAngularGeneratorPolarized.hh"
61 #include "G4LowEPComptonModel.hh"
62 #include "G4LowEPPolarizedComptonModel.hh"
63
64 #include "G4hMultipleScattering.hh"
65 #include "G4MscStepLimitType.hh"
66 #include "G4UrbanMscModel.hh"
67 #include "G4GoudsmitSaundersonMscModel.hh"
68 #include "G4DummyModel.hh"
69 #include "G4WentzelVIModel.hh"
70 #include "G4CoulombScattering.hh"
71 #include "G4eCoulombScatteringModel.hh"
72
73 #include "G4eIonisation.hh"
74 #include "G4eBremsstrahlung.hh"
75 #include "G4Generator2BS.hh"
76 #include "G4Generator2BN.hh"
77 #include "G4SeltzerBergerModel.hh"
78 #include "G4ePairProduction.hh"
79 #include "G4LivermoreIonisationModel.hh"
80 #include "G4PenelopeIonisationModel.hh"
81
82 #include "G4eplusAnnihilation.hh"
83
84 #include "G4hIonisation.hh"
85 #include "G4ionIonisation.hh"
86 #include "G4IonParametrisedLossModel.hh"
87 #include "G4LindhardSorensenIonModel.hh"
88 #include "G4NuclearStopping.hh"
89 #include "G4eplusTo2or3GammaModel.hh"
90
91 #include "G4Gamma.hh"
92 #include "G4Electron.hh"
93 #include "G4Positron.hh"
94 #include "G4GenericIon.hh"
95
96 #include "G4PhysicsListHelper.hh"
97 #include "G4BuilderType.hh"
98 #include "G4EmModelActivator.hh"
99 #include "G4GammaGeneralProcess.hh"
100
101 // factory
102 #include "G4PhysicsConstructorFactory.hh"
103 //
104 G4_DECLARE_PHYSCONSTR_FACTORY(G4EmStandardPhysics_option4);
105
106 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
107
108 G4EmStandardPhysics_option4::G4EmStandardPhysics_option4(G4int ver,
109 const G4String&)
110 : G4VPhysicsConstructor("G4EmStandard_opt4")
111 {
112 SetVerboseLevel(ver);
113 G4EmParameters* param = G4EmParameters::Instance();
114 param->SetDefaults();
115 param->SetVerbose(ver);
116 param->SetGeneralProcessActive(true);
117 param->SetMinEnergy(100*CLHEP::eV);
118 param->SetLowestElectronEnergy(100*CLHEP::eV);
119 param->SetNumberOfBinsPerDecade(20);
120 param->ActivateAngularGeneratorForIonisation(true);
121 param->SetStepFunction(0.2, 10*CLHEP::um);
122 param->SetStepFunctionMuHad(0.1, 50*CLHEP::um);
123 param->SetStepFunctionLightIons(0.1, 20*CLHEP::um);
124 param->SetStepFunctionIons(0.1, 1*CLHEP::um);
125 param->SetUseMottCorrection(true); // use Mott-correction for e-/e+ msc gs
126 param->SetMscStepLimitType(fUseSafetyPlus); // for e-/e+ msc gs
127 param->SetMscSkin(3); // error-free stepping for e-/e+ msc gs
128 param->SetMscRangeFactor(0.08); // error-free stepping for e-/e+ msc gs
129 param->SetMuHadLateralDisplacement(true);
130 param->SetFluo(true);
131 param->SetUseICRU90Data(true);
132 param->Set3GammaAnnihilationOnFly(true);
133 param->SetFluctuationType(fUrbanFluctuation);
134 param->SetMaxNIELEnergy(1*CLHEP::MeV);
135 param->SetPositronAtRestModelType(fAllisonPositronium);
136 SetPhysicsType(bElectromagnetic);
137 }
138
139 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
140
141 G4EmStandardPhysics_option4::~G4EmStandardPhysics_option4() = default;
142
143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
144
145 void G4EmStandardPhysics_option4::ConstructParticle()
146 {
147 // minimal set of particles for EM physics
148 G4EmBuilder::ConstructMinimalEmSet();
149 }
150
151 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
152
153 void G4EmStandardPhysics_option4::ConstructProcess()
154 {
155 if(verboseLevel > 1) {
156 G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
157 }
158 G4EmBuilder::PrepareEMPhysics();
159
160 G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
161 G4EmParameters* param = G4EmParameters::Instance();
162
163 // processes used by several particles
164 G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
165
166 // nuclear stopping is enabled if the energy limit above zero
167 G4double nielEnergyLimit = param->MaxNIELEnergy();
168 G4NuclearStopping* pnuc = nullptr;
169 if(nielEnergyLimit > 0.0) {
170 pnuc = new G4NuclearStopping();
171 pnuc->SetMaxKinEnergy(nielEnergyLimit);
172 }
173
174 // high energy limit for e+- scattering models and bremsstrahlung
175 G4double highEnergyLimit = param->MscEnergyLimit();
176
177 // Add gamma EM Processes
178 G4ParticleDefinition* particle = G4Gamma::Gamma();
179 G4bool polar = param->EnablePolarisation();
180
181 // Photoelectric
182 G4PhotoElectricEffect* pe = new G4PhotoElectricEffect();
183 G4VEmModel* peModel = new G4LivermorePhotoElectricModel();
184 pe->SetEmModel(peModel);
185 if(polar) {
186 peModel->SetAngularDistribution(new G4PhotoElectricAngularGeneratorPolarized());
187 }
188
189 // Compton scattering
190 G4ComptonScattering* cs = new G4ComptonScattering;
191 cs->SetEmModel(new G4KleinNishinaModel());
192 G4VEmModel* cModel = nullptr;
193 if(polar) {
194 cModel = new G4LowEPPolarizedComptonModel();
195 } else {
196 cModel = new G4LowEPComptonModel();
197 }
198 cModel->SetHighEnergyLimit(20*CLHEP::MeV);
199 cs->AddEmModel(0, cModel);
200
201 // Gamma conversion
202 G4GammaConversion* gc = new G4GammaConversion();
203 G4VEmModel* conv = new G4BetheHeitler5DModel();
204 gc->SetEmModel(conv);
205
206 // default Rayleigh scattering is Livermore
207 G4RayleighScattering* rl = new G4RayleighScattering();
208 if(polar) {
209 rl->SetEmModel(new G4LivermorePolarizedRayleighModel());
210 }
211
212 if(param->GeneralProcessActive()) {
213 G4GammaGeneralProcess* sp = new G4GammaGeneralProcess();
214 sp->AddEmProcess(pe);
215 sp->AddEmProcess(cs);
216 sp->AddEmProcess(gc);
217 sp->AddEmProcess(rl);
218 G4LossTableManager::Instance()->SetGammaGeneralProcess(sp);
219 ph->RegisterProcess(sp, particle);
220 } else {
221 ph->RegisterProcess(pe, particle);
222 ph->RegisterProcess(cs, particle);
223 ph->RegisterProcess(gc, particle);
224 ph->RegisterProcess(rl, particle);
225 }
226
227 // e-
228 particle = G4Electron::Electron();
229
230 // e-/e+ msc gs with Mott-correction
231 // (Mott-correction is set through G4EmParameters)
232 G4GoudsmitSaundersonMscModel* msc1 = new G4GoudsmitSaundersonMscModel();
233 G4WentzelVIModel* msc2 = new G4WentzelVIModel();
234 msc1->SetHighEnergyLimit(highEnergyLimit);
235 msc2->SetLowEnergyLimit(highEnergyLimit);
236 G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
237
238 G4eCoulombScatteringModel* ssm = new G4eCoulombScatteringModel();
239 G4CoulombScattering* ss = new G4CoulombScattering();
240 ss->SetEmModel(ssm);
241 ss->SetMinKinEnergy(highEnergyLimit);
242 ssm->SetLowEnergyLimit(highEnergyLimit);
243 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
244
245 // ionisation
246 G4eIonisation* eioni = new G4eIonisation();
247 eioni->SetFluctModel(G4EmStandUtil::ModelOfFluctuations());
248 G4VEmModel* theIoniMod = new G4PenelopeIonisationModel();
249 theIoniMod->SetHighEnergyLimit(0.1*CLHEP::MeV);
250 eioni->AddEmModel(0, theIoniMod);
251
252 // bremsstrahlung
253 G4eBremsstrahlung* brem = new G4eBremsstrahlung();
254 G4SeltzerBergerModel* br1 = new G4SeltzerBergerModel();
255 G4eBremsstrahlungRelModel* br2 = new G4eBremsstrahlungRelModel();
256 br1->SetAngularDistribution(new G4Generator2BS());
257 br2->SetAngularDistribution(new G4Generator2BS());
258 brem->SetEmModel(br1);
259 brem->SetEmModel(br2);
260 br1->SetHighEnergyLimit(CLHEP::GeV);
261
262 G4ePairProduction* ee = new G4ePairProduction();
263
264 // register processes
265 ph->RegisterProcess(eioni, particle);
266 ph->RegisterProcess(brem, particle);
267 ph->RegisterProcess(ee, particle);
268 ph->RegisterProcess(ss, particle);
269
270 // e+
271 particle = G4Positron::Positron();
272
273 // e-/e+ msc gs with Mott-correction
274 // (Mott-correction is set through G4EmParameters)
275 msc1 = new G4GoudsmitSaundersonMscModel();
276 msc2 = new G4WentzelVIModel();
277 msc1->SetHighEnergyLimit(highEnergyLimit);
278 msc2->SetLowEnergyLimit(highEnergyLimit);
279 G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
280
281 ssm = new G4eCoulombScatteringModel();
282 ss = new G4CoulombScattering();
283 ss->SetEmModel(ssm);
284 ss->SetMinKinEnergy(highEnergyLimit);
285 ssm->SetLowEnergyLimit(highEnergyLimit);
286 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
287
288 // ionisation
289 eioni = new G4eIonisation();
290 eioni->SetFluctModel(G4EmStandUtil::ModelOfFluctuations());
291 G4VEmModel* pen = new G4PenelopeIonisationModel();
292 pen->SetHighEnergyLimit(0.1*CLHEP::MeV);
293 eioni->AddEmModel(0, pen);
294
295 // bremsstrahlung
296 brem = new G4eBremsstrahlung();
297 br1 = new G4SeltzerBergerModel();
298 br2 = new G4eBremsstrahlungRelModel();
299 br1->SetAngularDistribution(new G4Generator2BS());
300 br2->SetAngularDistribution(new G4Generator2BS());
301 brem->SetEmModel(br1);
302 brem->SetEmModel(br2);
303 br1->SetHighEnergyLimit(CLHEP::GeV);
304
305 // annihilation
306 auto anni = new G4eplusAnnihilation();
307 if (param->Use3GammaAnnihilationOnFly()) {
308 anni->SetEmModel(new G4eplusTo2or3GammaModel());
309 }
310
311 // register processes
312 ph->RegisterProcess(eioni, particle);
313 ph->RegisterProcess(brem, particle);
314 ph->RegisterProcess(ee, particle);
315 ph->RegisterProcess(anni, particle);
316 ph->RegisterProcess(ss, particle);
317
318 // generic ion
319 particle = G4GenericIon::GenericIon();
320 G4ionIonisation* ionIoni = new G4ionIonisation();
321 ionIoni->SetEmModel(new G4LindhardSorensenIonModel());
322 ph->RegisterProcess(hmsc, particle);
323 ph->RegisterProcess(ionIoni, particle);
324 if(nullptr != pnuc) { ph->RegisterProcess(pnuc, particle); }
325
326 // muons, hadrons, ions
327 G4EmBuilder::ConstructCharged(hmsc, pnuc);
328
329 // extra configuration
330 G4EmModelActivator mact(GetPhysicsName());
331 }
332
333 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
334