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25 //
26 // ClassName: G4EmStandardPhysics_SpacePhysics
27 //
28 // Authors: P.Dondero (paolo.dondero@cern.ch)
29 //
30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33
34 #include "G4EmStandardPhysics_SpacePhysics.hh"
35
36 #include "G4SystemOfUnits.hh"
37 #include "G4ParticleDefinition.hh"
38 #include "G4LossTableManager.hh"
39 #include "G4EmParameters.hh"
40 #include "G4EmBuilder.hh"
41
42 #include "G4ComptonScattering.hh"
43 #include "G4GammaConversion.hh"
44 #include "G4PhotoElectricEffect.hh"
45 #include "G4RayleighScattering.hh"
46 #include "G4PEEffectFluoModel.hh"
47 #include "G4KleinNishinaModel.hh"
48 #include "G4BetheHeitler5DModel.hh"
49 #include "G4LivermorePhotoElectricModel.hh"
50 #include "G4LivermorePolarizedRayleighModel.hh"
51 #include "G4PhotoElectricAngularGeneratorPolarized.hh"
52 #include "G4LowEPComptonModel.hh"
53 #include "G4LowEPPolarizedComptonModel.hh"
54
55 #include "G4eMultipleScattering.hh"
56 #include "G4hMultipleScattering.hh"
57 #include "G4MscStepLimitType.hh"
58 #include "G4UrbanMscModel.hh"
59 #include "G4GoudsmitSaundersonMscModel.hh"
60 #include "G4DummyModel.hh"
61 #include "G4WentzelVIModel.hh"
62 #include "G4CoulombScattering.hh"
63 #include "G4eCoulombScatteringModel.hh"
64
65 #include "G4eIonisation.hh"
66 #include "G4eBremsstrahlung.hh"
67 #include "G4Generator2BS.hh"
68 #include "G4Generator2BN.hh"
69 #include "G4SeltzerBergerModel.hh"
70 #include "G4ePairProduction.hh"
71 #include "G4LivermoreIonisationModel.hh"
72 #include "G4PenelopeIonisationModel.hh"
73 #include "G4UniversalFluctuation.hh"
74 #include "G4UrbanFluctuation.hh"
75
76 #include "G4eplusAnnihilation.hh"
77 #include "G4hIonisation.hh"
78 #include "G4ionIonisation.hh"
79 #include "G4IonParametrisedLossModel.hh"
80 #include "G4NuclearStopping.hh"
81 #include "G4Gamma.hh"
82 #include "G4Electron.hh"
83 #include "G4Positron.hh"
84 #include "G4GenericIon.hh"
85 #include "G4PhysicsListHelper.hh"
86 #include "G4BuilderType.hh"
87 #include "G4EmModelActivator.hh"
88 #include "G4GammaGeneralProcess.hh"
89
90 // factory
91 #include "G4PhysicsConstructorFactory.hh"
92
93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
94
95 G4EmStandardPhysics_SpacePhysics::G4EmStandardPhysics_SpacePhysics(G4int ver, const G4String&)
96 : G4VPhysicsConstructor("G4EmStandard_SpacePhysics"), fVerbose(ver)
97 {
98 G4cout << "---> Using G4EmStandard_SpacePhysics v. 11.03 " << G4endl;
99 G4EmParameters* param = G4EmParameters::Instance();
100 param->SetDefaults();
101 param->SetVerbose(ver);
102 param->SetMinEnergy(100*CLHEP::eV);
103 param->SetLowestElectronEnergy(50*CLHEP::eV);
104 param->SetNumberOfBinsPerDecade(20);
105 param->ActivateAngularGeneratorForIonisation(true);
106 param->SetStepFunction(0.2, 10*CLHEP::um);
107 param->SetStepFunctionMuHad(0.05, 0.01*CLHEP::um);
108 param->SetStepFunctionLightIons(0.1, 20*CLHEP::um);
109 param->SetStepFunctionIons(0.1, 1*CLHEP::um);
110 param->SetUseMottCorrection(true); // use Mott-correction for e-/e+ msc gs
111 param->SetMscStepLimitType(fUseSafetyPlus); // for e-/e+ msc gs
112 param->SetMscSkin(3); // error-free stepping for e-/e+ msc gs
113 param->SetMscRangeFactor(0.08); // error-free stepping for e-/e+ msc gs
114 param->SetMuHadLateralDisplacement(true);
115 param->SetFluo(true);
116 param->SetUseICRU90Data(true);
117 param->SetMaxNIELEnergy(1*CLHEP::MeV);
118 SetPhysicsType(bElectromagnetic);
119 }
120
121 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
122
123 void G4EmStandardPhysics_SpacePhysics::ConstructParticle()
124 {
125 // minimal set of particles for EM physics
126 G4EmBuilder::ConstructMinimalEmSet();
127 }
128
129 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
130
131 void G4EmStandardPhysics_SpacePhysics::ConstructProcess()
132 {
133 if(fVerbose > 1)
134 {
135 G4cout << "### " << GetPhysicsName() << " Construct Space Physics Processes " << G4endl;
136 }
137 G4EmBuilder::PrepareEMPhysics();
138
139 G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
140 G4EmParameters* param = G4EmParameters::Instance();
141
142 // processes used by several particles
143 G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
144
145 // nuclear stopping is enabled if the energy limit above zero
146 G4double nielEnergyLimit = param->MaxNIELEnergy();
147 G4NuclearStopping* pnuc = nullptr;
148 if(nielEnergyLimit > 0.0)
149 {
150 pnuc = new G4NuclearStopping();
151 pnuc->SetMaxKinEnergy(nielEnergyLimit);
152 }
153
154 // high energy limit for e+- scattering models and bremsstrahlung
155 G4double highEnergyLimit = param->MscEnergyLimit();
156
157 // Add gamma EM Processes
158 G4ParticleDefinition* particle = G4Gamma::Gamma();
159 G4bool polar = param->EnablePolarisation();
160
161 // Photoelectric
162 G4PhotoElectricEffect* pe = new G4PhotoElectricEffect();
163 G4VEmModel* peModel = new G4LivermorePhotoElectricModel();
164 pe->SetEmModel(peModel);
165 if(polar)
166 {
167 peModel->SetAngularDistribution(new G4PhotoElectricAngularGeneratorPolarized());
168 }
169
170 // Compton scattering
171 G4ComptonScattering* cs = new G4ComptonScattering;
172 cs->SetEmModel(new G4KleinNishinaModel());
173 G4VEmModel* cModel = nullptr;
174 if(polar)
175 {
176 cModel = new G4LowEPPolarizedComptonModel();
177 }
178 else
179 {
180 cModel = new G4LowEPComptonModel();
181 }
182 cModel->SetHighEnergyLimit(20*CLHEP::MeV);
183 cs->AddEmModel(0, cModel);
184
185 // Gamma conversion
186 G4GammaConversion* gc = new G4GammaConversion();
187 G4VEmModel* conv = new G4BetheHeitler5DModel();
188 gc->SetEmModel(conv);
189
190 // default Rayleigh scattering is Livermore
191 G4RayleighScattering* rl = new G4RayleighScattering();
192 if(polar)
193 {
194 rl->SetEmModel(new G4LivermorePolarizedRayleighModel());
195 }
196
197 if(param->GeneralProcessActive())
198 {
199 G4GammaGeneralProcess* sp = new G4GammaGeneralProcess();
200 sp->AddEmProcess(pe);
201 sp->AddEmProcess(cs);
202 sp->AddEmProcess(gc);
203 sp->AddEmProcess(rl);
204 G4LossTableManager::Instance()->SetGammaGeneralProcess(sp);
205 ph->RegisterProcess(sp, particle);
206 }
207 else
208 {
209 ph->RegisterProcess(pe, particle);
210 ph->RegisterProcess(cs, particle);
211 ph->RegisterProcess(gc, particle);
212 ph->RegisterProcess(rl, particle);
213 }
214
215 // e-
216 particle = G4Electron::Electron();
217
218 // multiple scattering
219 G4eMultipleScattering* msc = new G4eMultipleScattering();
220 // e-/e+ msc gs with Mott-correction
221 // (Mott-correction is set through G4EmParameters)
222 G4GoudsmitSaundersonMscModel* msc1 = new G4GoudsmitSaundersonMscModel();
223 G4WentzelVIModel* msc2 = new G4WentzelVIModel();
224 msc1->SetHighEnergyLimit(highEnergyLimit);
225 msc2->SetLowEnergyLimit(highEnergyLimit);
226 msc->SetEmModel(msc1);
227 msc->SetEmModel(msc2);
228
229 auto *ssm = new G4eCoulombScatteringModel();
230 G4CoulombScattering* ss = new G4CoulombScattering();
231 ss->SetEmModel(ssm);
232 ss->SetMinKinEnergy(highEnergyLimit);
233 ssm->SetLowEnergyLimit(highEnergyLimit);
234 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
235
236 // ionisation
237 G4eIonisation* eioni = new G4eIonisation();
238 G4VEmModel* theIoniLiv = new G4LivermoreIonisationModel();
239 eioni->SetFluctModel(new G4UrbanFluctuation());
240 theIoniLiv->SetHighEnergyLimit(0.1*CLHEP::MeV);
241 eioni->AddEmModel(0, theIoniLiv, new G4UniversalFluctuation() );
242
243 // bremsstrahlung
244 G4eBremsstrahlung* brem = new G4eBremsstrahlung();
245 G4SeltzerBergerModel* br1 = new G4SeltzerBergerModel();
246 G4eBremsstrahlungRelModel* br2 = new G4eBremsstrahlungRelModel();
247 br1->SetAngularDistribution(new G4Generator2BS());
248 br2->SetAngularDistribution(new G4Generator2BS());
249 brem->SetEmModel(br1);
250 brem->SetEmModel(br2);
251 br1->SetHighEnergyLimit(CLHEP::GeV);
252
253 G4ePairProduction* ee = new G4ePairProduction();
254
255 // register processes
256 ph->RegisterProcess(msc, particle);
257 ph->RegisterProcess(eioni, particle);
258 ph->RegisterProcess(brem, particle);
259 ph->RegisterProcess(ee, particle);
260 ph->RegisterProcess(ss, particle);
261
262 // e+
263 particle = G4Positron::Positron();
264
265 // multiple scattering
266 msc = new G4eMultipleScattering();
267 // e-/e+ msc gs with Mott-correction
268 // (Mott-correction is set through G4EmParameters)
269 msc1 = new G4GoudsmitSaundersonMscModel();
270 msc2 = new G4WentzelVIModel();
271 msc1->SetHighEnergyLimit(highEnergyLimit);
272 msc2->SetLowEnergyLimit(highEnergyLimit);
273 msc->SetEmModel(msc1);
274 msc->SetEmModel(msc2);
275
276 ssm = new G4eCoulombScatteringModel();
277 ss = new G4CoulombScattering();
278 ss->SetEmModel(ssm);
279 ss->SetMinKinEnergy(highEnergyLimit);
280 ssm->SetLowEnergyLimit(highEnergyLimit);
281 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
282
283 // ionisation
284 eioni = new G4eIonisation();
285 eioni->SetFluctModel(new G4UrbanFluctuation());
286 G4VEmModel* pen = new G4PenelopeIonisationModel();
287 pen->SetHighEnergyLimit(0.1*CLHEP::MeV);
288 eioni->AddEmModel(0, pen, new G4UniversalFluctuation());
289
290 // bremsstrahlung
291 brem = new G4eBremsstrahlung();
292 br1 = new G4SeltzerBergerModel();
293 br2 = new G4eBremsstrahlungRelModel();
294 br1->SetAngularDistribution(new G4Generator2BS());
295 br2->SetAngularDistribution(new G4Generator2BS());
296 brem->SetEmModel(br1);
297 brem->SetEmModel(br2);
298 br1->SetHighEnergyLimit(CLHEP::GeV);
299
300 // register processes
301 ph->RegisterProcess(msc, particle);
302 ph->RegisterProcess(eioni, particle);
303 ph->RegisterProcess(brem, particle);
304 ph->RegisterProcess(ee, particle);
305 ph->RegisterProcess(new G4eplusAnnihilation(), particle);
306 ph->RegisterProcess(ss, particle);
307
308 // generic ion
309 particle = G4GenericIon::GenericIon();
310 G4ionIonisation* ionIoni = new G4ionIonisation();
311 ionIoni->SetEmModel(new G4IonParametrisedLossModel());
312 ph->RegisterProcess(hmsc, particle);
313 ph->RegisterProcess(ionIoni, particle);
314 if(nullptr != pnuc)
315 {
316 ph->RegisterProcess(pnuc, particle);
317 }
318
319 // muons, hadrons, ions
320 G4EmBuilder::ConstructCharged(hmsc, pnuc);
321
322 // extra configuration
323 G4EmModelActivator mact(GetPhysicsName());
324 }
325
326 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
327