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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: G4EmStandardPhysics
30 //
31 // Author: V.Ivanchenko 09.11.2005
32 //
33 // Modified:
34 //
35 //----------------------------------------------------------------------------
36 //
37
38 #include "G4EmStandardPhysics.hh"
39 #include "G4SystemOfUnits.hh"
40 #include "G4ParticleDefinition.hh"
41 #include "G4EmParameters.hh"
42 #include "G4EmBuilder.hh"
43 #include "G4LossTableManager.hh"
44
45 #include "G4ComptonScattering.hh"
46 #include "G4KleinNishinaModel.hh"
47 #include "G4GammaConversion.hh"
48 #include "G4PhotoElectricEffect.hh"
49 #include "G4RayleighScattering.hh"
50 #include "G4LivermorePhotoElectricModel.hh"
51 #include "G4LivermorePolarizedRayleighModel.hh"
52 #include "G4PhotoElectricAngularGeneratorPolarized.hh"
53 #include "G4eplusTo2or3GammaModel.hh"
54
55 #include "G4hMultipleScattering.hh"
56 #include "G4CoulombScattering.hh"
57 #include "G4eCoulombScatteringModel.hh"
58 #include "G4WentzelVIModel.hh"
59 #include "G4UrbanMscModel.hh"
60
61 #include "G4eIonisation.hh"
62 #include "G4eBremsstrahlung.hh"
63 #include "G4eplusAnnihilation.hh"
64
65 #include "G4hIonisation.hh"
66 #include "G4ionIonisation.hh"
67 #include "G4NuclearStopping.hh"
68
69 #include "G4Gamma.hh"
70 #include "G4Electron.hh"
71 #include "G4Positron.hh"
72 #include "G4GenericIon.hh"
73
74 #include "G4PhysicsListHelper.hh"
75 #include "G4BuilderType.hh"
76 #include "G4EmModelActivator.hh"
77 #include "G4GammaGeneralProcess.hh"
78
79 // factory
80 #include "G4PhysicsConstructorFactory.hh"
81 //
82 G4_DECLARE_PHYSCONSTR_FACTORY(G4EmStandardPhysics);
83
84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85
86 G4EmStandardPhysics::G4EmStandardPhysics(G4int ver, const G4String&)
87 : G4VPhysicsConstructor("G4EmStandard")
88 {
89 SetVerboseLevel(ver);
90 G4EmParameters* param = G4EmParameters::Instance();
91 param->SetDefaults();
92 param->SetVerbose(ver);
93 param->SetGeneralProcessActive(true);
94 param->SetFluctuationType(fUrbanFluctuation);
95 SetPhysicsType(bElectromagnetic);
96 }
97
98 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
99
100 G4EmStandardPhysics::~G4EmStandardPhysics() = default;
101
102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
103
104 void G4EmStandardPhysics::ConstructParticle()
105 {
106 // minimal set of particles for EM physics
107 G4EmBuilder::ConstructMinimalEmSet();
108 }
109
110 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
111
112 void G4EmStandardPhysics::ConstructProcess()
113 {
114 if(verboseLevel > 1) {
115 G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
116 }
117 G4EmBuilder::PrepareEMPhysics();
118
119 G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
120 G4EmParameters* param = G4EmParameters::Instance();
121
122 // processes used by several particles
123 G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
124
125 // nuclear stopping is enabled if th eenergy limit above zero
126 G4double nielEnergyLimit = param->MaxNIELEnergy();
127 G4NuclearStopping* pnuc = nullptr;
128 if(nielEnergyLimit > 0.0) {
129 pnuc = new G4NuclearStopping();
130 pnuc->SetMaxKinEnergy(nielEnergyLimit);
131 }
132
133 // high energy limit for e+- scattering models and bremsstrahlung
134 G4double highEnergyLimit = param->MscEnergyLimit();
135
136 // Add gamma EM Processes
137 G4ParticleDefinition* particle = G4Gamma::Gamma();
138 G4bool polar = param->EnablePolarisation();
139
140 // Photoelectric
141 G4PhotoElectricEffect* pe = new G4PhotoElectricEffect();
142 G4VEmModel* peModel = new G4LivermorePhotoElectricModel();
143 pe->SetEmModel(peModel);
144 if(polar) {
145 peModel->SetAngularDistribution(new G4PhotoElectricAngularGeneratorPolarized());
146 }
147
148 // Compton scattering
149 G4ComptonScattering* cs = new G4ComptonScattering;
150 if(polar) {
151 cs->SetEmModel(new G4KleinNishinaModel());
152 }
153
154 // default Rayleigh scattering is Livermore
155 G4RayleighScattering* rl = new G4RayleighScattering();
156 if(polar) {
157 rl->SetEmModel(new G4LivermorePolarizedRayleighModel());
158 }
159
160 if(G4EmParameters::Instance()->GeneralProcessActive()) {
161 G4GammaGeneralProcess* sp = new G4GammaGeneralProcess();
162 sp->AddEmProcess(pe);
163 sp->AddEmProcess(cs);
164 sp->AddEmProcess(new G4GammaConversion());
165 sp->AddEmProcess(rl);
166 G4LossTableManager::Instance()->SetGammaGeneralProcess(sp);
167 ph->RegisterProcess(sp, particle);
168
169 } else {
170 ph->RegisterProcess(pe, particle);
171 ph->RegisterProcess(cs, particle);
172 ph->RegisterProcess(new G4GammaConversion(), particle);
173 ph->RegisterProcess(rl, particle);
174 }
175
176 // e-
177 particle = G4Electron::Electron();
178
179 G4UrbanMscModel* msc1 = new G4UrbanMscModel();
180 G4WentzelVIModel* msc2 = new G4WentzelVIModel();
181 msc1->SetHighEnergyLimit(highEnergyLimit);
182 msc2->SetLowEnergyLimit(highEnergyLimit);
183 G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
184
185 G4eCoulombScatteringModel* ssm = new G4eCoulombScatteringModel();
186 G4CoulombScattering* ss = new G4CoulombScattering();
187 ss->SetEmModel(ssm);
188 ss->SetMinKinEnergy(highEnergyLimit);
189 ssm->SetLowEnergyLimit(highEnergyLimit);
190 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
191
192 ph->RegisterProcess(new G4eIonisation(), particle);
193 ph->RegisterProcess(new G4eBremsstrahlung(), particle);
194 ph->RegisterProcess(ss, particle);
195
196 // e+
197 particle = G4Positron::Positron();
198
199 msc1 = new G4UrbanMscModel();
200 msc2 = new G4WentzelVIModel();
201 msc1->SetHighEnergyLimit(highEnergyLimit);
202 msc2->SetLowEnergyLimit(highEnergyLimit);
203 G4EmBuilder::ConstructElectronMscProcess(msc1, msc2, particle);
204
205 ssm = new G4eCoulombScatteringModel();
206 ss = new G4CoulombScattering();
207 ss->SetEmModel(ssm);
208 ss->SetMinKinEnergy(highEnergyLimit);
209 ssm->SetLowEnergyLimit(highEnergyLimit);
210 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
211
212 // annihilation
213 auto anni = new G4eplusAnnihilation();
214 if (param->Use3GammaAnnihilationOnFly()) {
215 anni->SetEmModel(new G4eplusTo2or3GammaModel());
216 }
217
218 ph->RegisterProcess(new G4eIonisation(), particle);
219 ph->RegisterProcess(new G4eBremsstrahlung(), particle);
220 ph->RegisterProcess(anni, particle);
221 ph->RegisterProcess(ss, particle);
222
223 // generic ion
224 particle = G4GenericIon::GenericIon();
225 G4ionIonisation* ionIoni = new G4ionIonisation();
226 ph->RegisterProcess(hmsc, particle);
227 ph->RegisterProcess(ionIoni, particle);
228 if(nullptr != pnuc) { ph->RegisterProcess(pnuc, particle); }
229
230 // muons, hadrons ions
231 G4EmBuilder::ConstructCharged(hmsc, pnuc);
232
233 // extra configuration
234 G4EmModelActivator mact(GetPhysicsName());
235 }
236
237 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
238