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25 //
26 //
27 //---------------------------------------------------------------------------
28 //
29 // ClassName: G4EmStandardPhysicsGS
30 //
31 // Author: V.Ivanchenko 05.06.2015
32 //
33 // Modified:
34 //
35 // Class Description:
36 //
37 // Standard EM physics constructor for HEP applications with the Goudsmit
38 // -Saunderson MSC model for e-/e+ Coulomb scattering below 100 [MeV] (instead
39 // of the Urban model). Note, that the Goudsmit-Saunderson MSC model used here
40 // with its HEP settings (i.e. less accurate). The Goudsmit-Saunderson MSC
41 // model with its most accurate settings is used in the G4EmStandard_opt4
42 // physics constructor for e-/e+ Coulomb scattering.
43 //
44 //----------------------------------------------------------------------------
45 //
46
47 #include "G4EmStandardPhysicsGS.hh"
48 #include "G4SystemOfUnits.hh"
49 #include "G4ParticleDefinition.hh"
50 #include "G4EmParameters.hh"
51 #include "G4EmBuilder.hh"
52 #include "G4LossTableManager.hh"
53
54 #include "G4ComptonScattering.hh"
55 #include "G4GammaConversion.hh"
56 #include "G4PhotoElectricEffect.hh"
57 #include "G4RayleighScattering.hh"
58 #include "G4LivermorePhotoElectricModel.hh"
59
60 #include "G4eMultipleScattering.hh"
61 #include "G4hMultipleScattering.hh"
62 #include "G4CoulombScattering.hh"
63 #include "G4eCoulombScatteringModel.hh"
64 #include "G4WentzelVIModel.hh"
65 #include "G4UrbanMscModel.hh"
66 #include "G4GoudsmitSaundersonMscModel.hh"
67
68 #include "G4eIonisation.hh"
69 #include "G4eBremsstrahlung.hh"
70 #include "G4eplusAnnihilation.hh"
71
72 #include "G4hIonisation.hh"
73 #include "G4ionIonisation.hh"
74
75 #include "G4Gamma.hh"
76 #include "G4Electron.hh"
77 #include "G4Positron.hh"
78 #include "G4GenericIon.hh"
79
80 #include "G4PhysicsListHelper.hh"
81 #include "G4BuilderType.hh"
82 #include "G4EmModelActivator.hh"
83
84 // factory
85 #include "G4PhysicsConstructorFactory.hh"
86 //
87 G4_DECLARE_PHYSCONSTR_FACTORY(G4EmStandardPhysicsGS);
88
89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
90
91 G4EmStandardPhysicsGS::G4EmStandardPhysicsGS(G4int ver, const G4String&)
92 : G4VPhysicsConstructor("G4EmStandardGS")
93 {
94 SetVerboseLevel(ver);
95 G4EmParameters* param = G4EmParameters::Instance();
96 param->SetDefaults();
97 param->SetVerbose(ver);
98 param->SetMscRangeFactor(0.06);
99 // param->SetMscStepLimitType(fUseSafetyPlus); // corresponds to the error-free stepping
100 // param->SetFluo(true);
101 SetPhysicsType(bElectromagnetic);
102 }
103
104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
105
106 G4EmStandardPhysicsGS::~G4EmStandardPhysicsGS()
107 {}
108
109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
110
111 void G4EmStandardPhysicsGS::ConstructParticle()
112 {
113 // minimal set of particles for EM physics
114 G4EmBuilder::ConstructMinimalEmSet();
115 }
116
117 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
118
119 void G4EmStandardPhysicsGS::ConstructProcess()
120 {
121 if(verboseLevel > 1) {
122 G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
123 }
124 G4EmBuilder::PrepareEMPhysics();
125 G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
126
127 // processes used by several particles
128 G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
129 G4NuclearStopping* pnuc(nullptr);
130
131 // high energy limit for e+- scattering models and bremsstrahlung
132 G4double highEnergyLimit = G4EmParameters::Instance()->MscEnergyLimit();
133
134 // Add gamma EM processes
135 G4ParticleDefinition* particle = G4Gamma::Gamma();
136
137 G4PhotoElectricEffect* pee = new G4PhotoElectricEffect();
138 pee->SetEmModel(new G4LivermorePhotoElectricModel());
139 ph->RegisterProcess(pee, particle);
140
141 ph->RegisterProcess(new G4ComptonScattering(), particle);
142 ph->RegisterProcess(new G4GammaConversion(), particle);
143 ph->RegisterProcess(new G4RayleighScattering(), particle);
144
145 // e-
146 particle = G4Electron::Electron();
147
148 G4eMultipleScattering* msc = new G4eMultipleScattering;
149 G4GoudsmitSaundersonMscModel* msc1 = new G4GoudsmitSaundersonMscModel();
150 G4WentzelVIModel* msc2 = new G4WentzelVIModel();
151 msc1->SetHighEnergyLimit(highEnergyLimit);
152 msc2->SetLowEnergyLimit(highEnergyLimit);
153 msc->SetEmModel(msc1);
154 msc->SetEmModel(msc2);
155
156 G4eCoulombScatteringModel* ssm = new G4eCoulombScatteringModel();
157 G4CoulombScattering* ss = new G4CoulombScattering();
158 ss->SetEmModel(ssm);
159 ss->SetMinKinEnergy(highEnergyLimit);
160 ssm->SetLowEnergyLimit(highEnergyLimit);
161 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
162
163 ph->RegisterProcess(msc, particle);
164 ph->RegisterProcess(new G4eIonisation(), particle);
165 ph->RegisterProcess(new G4eBremsstrahlung(), particle);
166 ph->RegisterProcess(ss, particle);
167
168 // e+
169 particle = G4Positron::Positron();
170
171 msc = new G4eMultipleScattering;
172 msc1 = new G4GoudsmitSaundersonMscModel();
173 msc2 = new G4WentzelVIModel();
174 msc1->SetHighEnergyLimit(highEnergyLimit);
175 msc2->SetLowEnergyLimit(highEnergyLimit);
176 msc->SetEmModel(msc1);
177 msc->SetEmModel(msc2);
178
179 ssm = new G4eCoulombScatteringModel();
180 ss = new G4CoulombScattering();
181 ss->SetEmModel(ssm);
182 ss->SetMinKinEnergy(highEnergyLimit);
183 ssm->SetLowEnergyLimit(highEnergyLimit);
184 ssm->SetActivationLowEnergyLimit(highEnergyLimit);
185
186 ph->RegisterProcess(msc, particle);
187 ph->RegisterProcess(new G4eIonisation(), particle);
188 ph->RegisterProcess(new G4eBremsstrahlung(), particle);
189 ph->RegisterProcess(new G4eplusAnnihilation(), particle);
190 ph->RegisterProcess(ss, particle);
191
192 // generic ion
193 particle = G4GenericIon::GenericIon();
194 G4ionIonisation* ionIoni = new G4ionIonisation();
195 ph->RegisterProcess(hmsc, particle);
196 ph->RegisterProcess(ionIoni, particle);
197
198 // muons, hadrons, ions
199 G4EmBuilder::ConstructCharged(hmsc, pnuc);
200
201 // extra configuration
202 G4EmModelActivator mact(GetPhysicsName());
203 }
204
205 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
206