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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4CoulombScattering 32 // File name: G4CoulombScattering
33 // 33 //
34 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko
35 // 35 //
36 // Creation date: 22.08.2004 36 // Creation date: 22.08.2004
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 01.08.06 V.Ivanchenko add choice between G4 39 // 01.08.06 V.Ivanchenko add choice between G4eCoulombScatteringModel and
40 // G4CoulombScatteringModel 40 // G4CoulombScatteringModel
41 // 41 //
42 42
43 // 43 //
44 // ------------------------------------------- 44 // -------------------------------------------------------------------
45 // 45 //
46 //....oooOO0OOooo........oooOO0OOooo........oo 46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
47 //....oooOO0OOooo........oooOO0OOooo........oo 47 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
48 48
49 #include "G4CoulombScattering.hh" 49 #include "G4CoulombScattering.hh"
50 #include "G4SystemOfUnits.hh" 50 #include "G4SystemOfUnits.hh"
51 #include "G4eCoulombScatteringModel.hh" 51 #include "G4eCoulombScatteringModel.hh"
52 #include "G4IonCoulombScatteringModel.hh" 52 #include "G4IonCoulombScatteringModel.hh"
53 #include "G4Proton.hh" 53 #include "G4Proton.hh"
54 #include "G4EmParameters.hh" 54 #include "G4EmParameters.hh"
55 55
56 //....oooOO0OOooo........oooOO0OOooo........oo 56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
57 57
58 G4CoulombScattering::G4CoulombScattering(const 58 G4CoulombScattering::G4CoulombScattering(const G4String& nam, G4bool comb)
59 : G4VEmProcess(nam), 59 : G4VEmProcess(nam),
60 q2Max(CLHEP::TeV*CLHEP::TeV), 60 q2Max(CLHEP::TeV*CLHEP::TeV),
61 isCombined(comb) 61 isCombined(comb)
62 { 62 {
63 SetBuildTableFlag(true); 63 SetBuildTableFlag(true);
64 SetStartFromNullFlag(false); 64 SetStartFromNullFlag(false);
65 SetSplineFlag(false); 65 SetSplineFlag(false);
66 SetCrossSectionType(fEmOnePeak); 66 SetCrossSectionType(fEmOnePeak);
67 SetSecondaryParticle(G4Proton::Proton()); 67 SetSecondaryParticle(G4Proton::Proton());
68 SetProcessSubType(fCoulombScattering); 68 SetProcessSubType(fCoulombScattering);
69 } 69 }
70 70
71 //....oooOO0OOooo........oooOO0OOooo........oo 71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
72 72
73 G4CoulombScattering::G4CoulombScattering(const 73 G4CoulombScattering::G4CoulombScattering(const G4String& nam)
74 : G4CoulombScattering(nam, true) 74 : G4CoulombScattering(nam, true)
75 {} 75 {}
76 76
77 //....oooOO0OOooo........oooOO0OOooo........oo 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78 78
79 G4CoulombScattering::G4CoulombScattering(G4boo 79 G4CoulombScattering::G4CoulombScattering(G4bool comb)
80 : G4CoulombScattering("CoulombScat", comb) 80 : G4CoulombScattering("CoulombScat", comb)
81 {} 81 {}
82 82
83 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
84 84
85 G4CoulombScattering::~G4CoulombScattering() = 85 G4CoulombScattering::~G4CoulombScattering() = default;
86 86
87 //....oooOO0OOooo........oooOO0OOooo........oo 87 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 88
89 G4bool G4CoulombScattering::IsApplicable(const 89 G4bool G4CoulombScattering::IsApplicable(const G4ParticleDefinition& p)
90 { 90 {
91 return (p.GetPDGCharge() != 0.0); 91 return (p.GetPDGCharge() != 0.0);
92 } 92 }
93 93
94 //....oooOO0OOooo........oooOO0OOooo........oo 94 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
95 95
96 void G4CoulombScattering::InitialiseProcess(co 96 void G4CoulombScattering::InitialiseProcess(const G4ParticleDefinition* p)
97 { 97 {
98 // second initialisation not allowed for the 98 // second initialisation not allowed for the time being
99 // this means that polar angle limit change 99 // this means that polar angle limit change will not be appled
100 // after first initialisation 100 // after first initialisation
101 if(isInitialised) { return; } 101 if(isInitialised) { return; }
102 102
103 G4EmParameters* param = G4EmParameters::Inst 103 G4EmParameters* param = G4EmParameters::Instance();
104 G4double a = param->FactorForAngleLimit()*CL 104 G4double a = param->FactorForAngleLimit()*CLHEP::hbarc/CLHEP::fermi;
105 q2Max = 0.5*a*a; 105 q2Max = 0.5*a*a;
106 G4double theta = param->MscThetaLimit(); 106 G4double theta = param->MscThetaLimit();
107 107
108 // restricted or non-restricted cross sectio 108 // restricted or non-restricted cross section table
109 if(isCombined) { 109 if(isCombined) {
110 if(theta == CLHEP::pi) { 110 if(theta == CLHEP::pi) {
111 // for restriced single scattering chang 111 // for restriced single scattering change cross section shape
112 SetCrossSectionType(fEmIncreasing); 112 SetCrossSectionType(fEmIncreasing);
113 SetStartFromNullFlag(true); 113 SetStartFromNullFlag(true);
114 } 114 }
115 } else { 115 } else {
116 SetSplineFlag(true); 116 SetSplineFlag(true);
117 SetCrossSectionType(fEmDecreasing); 117 SetCrossSectionType(fEmDecreasing);
118 } 118 }
119 isInitialised = true; 119 isInitialised = true;
120 G4double mass = p->GetPDGMass(); 120 G4double mass = p->GetPDGMass();
121 G4String name = p->GetParticleName(); 121 G4String name = p->GetParticleName();
122 122
123 G4bool ion = false; 123 G4bool ion = false;
124 if (mass > CLHEP::GeV || p->GetParticleType( 124 if (mass > CLHEP::GeV || p->GetParticleType() == "nucleus") {
125 SetBuildTableFlag(false); 125 SetBuildTableFlag(false);
126 ion = true; 126 ion = true;
127 if(name != "GenericIon") { SetVerboseLevel 127 if(name != "GenericIon") { SetVerboseLevel(0); }
128 } else { 128 } else {
129 if(name != "e-" && name != "e+" && 129 if(name != "e-" && name != "e+" &&
130 name != "mu+" && name != "mu-" && name 130 name != "mu+" && name != "mu-" && name != "pi+" &&
131 name != "kaon+" && name != "proton" ) { 131 name != "kaon+" && name != "proton" ) { SetVerboseLevel(0); }
132 } 132 }
133 /* 133 /*
134 G4cout << "### G4CoulombScattering::Initiali 134 G4cout << "### G4CoulombScattering::InitialiseProcess: "
135 << p->GetParticleName() 135 << p->GetParticleName()
136 << " Emin(MeV)= " << MinKinEnergy()/MeV 136 << " Emin(MeV)= " << MinKinEnergy()/MeV
137 << " Emax(TeV)= " << MaxKinEnergy()/TeV 137 << " Emax(TeV)= " << MaxKinEnergy()/TeV
138 << " nbins= " << LambdaBinning() 138 << " nbins= " << LambdaBinning()
139 << " theta= " << theta 139 << " theta= " << theta
140 << " mass(MeV)= " << mass 140 << " mass(MeV)= " << mass
141 << " isCombined=" << isCombined 141 << " isCombined=" << isCombined
142 << " ion=" << ion 142 << " ion=" << ion
143 << G4endl; 143 << G4endl;
144 */ 144 */
145 if(nullptr == EmModel(0)) { 145 if(nullptr == EmModel(0)) {
146 if(ion) { SetEmModel(new G4IonCoulombScatt 146 if(ion) { SetEmModel(new G4IonCoulombScatteringModel()); }
147 else { SetEmModel(new G4eCoulombScattering 147 else { SetEmModel(new G4eCoulombScatteringModel(isCombined)); }
148 } 148 }
149 G4VEmModel* model = EmModel(0); 149 G4VEmModel* model = EmModel(0);
150 G4double emin = std::max(param->MinKinEnergy 150 G4double emin = std::max(param->MinKinEnergy(),model->LowEnergyLimit());
151 G4double emax = std::min(param->MaxKinEnergy 151 G4double emax = std::min(param->MaxKinEnergy(),model->HighEnergyLimit());
152 model->SetPolarAngleLimit(theta); 152 model->SetPolarAngleLimit(theta);
153 model->SetLowEnergyLimit(emin); 153 model->SetLowEnergyLimit(emin);
154 model->SetHighEnergyLimit(emax); 154 model->SetHighEnergyLimit(emax);
155 AddEmModel(1, model); 155 AddEmModel(1, model);
156 } 156 }
157 157
158 //....oooOO0OOooo........oooOO0OOooo........oo 158 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
159 159
160 G4double G4CoulombScattering::MinPrimaryEnergy 160 G4double G4CoulombScattering::MinPrimaryEnergy(const G4ParticleDefinition* part,
161 const G4Material* mat) 161 const G4Material* mat)
162 { 162 {
163 // Pure Coulomb scattering 163 // Pure Coulomb scattering
164 G4double emin = 0.0; 164 G4double emin = 0.0;
165 165
166 // Coulomb scattering combined with multiple 166 // Coulomb scattering combined with multiple or hadronic scattering
167 G4double theta = G4EmParameters::Instance()- 167 G4double theta = G4EmParameters::Instance()->MscThetaLimit();
168 168
169 if(0.0 < theta) { 169 if(0.0 < theta) {
170 G4double p2 = q2Max*mat->GetIonisation()-> 170 G4double p2 = q2Max*mat->GetIonisation()->GetInvA23()/(1.0 - std::cos(theta));
171 G4double mass = part->GetPDGMass(); 171 G4double mass = part->GetPDGMass();
172 emin = p2/(std::sqrt(p2 + mass*mass) + mas 172 emin = p2/(std::sqrt(p2 + mass*mass) + mass);
173 } 173 }
174 174
175 return emin; 175 return emin;
176 } 176 }
177 177
178 //....oooOO0OOooo........oooOO0OOooo........oo 178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
179 179
180 void G4CoulombScattering::StreamProcessInfo(st 180 void G4CoulombScattering::StreamProcessInfo(std::ostream& outFile) const
181 { 181 {
182 G4double tetmin = G4EmParameters::Instance() 182 G4double tetmin = G4EmParameters::Instance()->MscThetaLimit()/CLHEP::degree;
183 outFile << " "; 183 outFile << " ";
184 if(tetmin > 179.) { outFile << "ThetaMin(p)" 184 if(tetmin > 179.) { outFile << "ThetaMin(p)"; }
185 else { outFile << tetmin; } 185 else { outFile << tetmin; }
186 outFile << " < Theta(degree) < 180"; 186 outFile << " < Theta(degree) < 180";
187 187
188 if(q2Max < DBL_MAX) { 188 if(q2Max < DBL_MAX) {
189 outFile << ", pLimit(GeV^1)= " << std::sqr 189 outFile << ", pLimit(GeV^1)= " << std::sqrt(q2Max)/GeV;
190 } 190 }
191 outFile << G4endl; 191 outFile << G4endl;
192 } 192 }
193 193
194 //....oooOO0OOooo........oooOO0OOooo........oo 194 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
195 195
196 void G4CoulombScattering::ProcessDescription(s 196 void G4CoulombScattering::ProcessDescription(std::ostream& out) const
197 { 197 {
198 out << 198 out <<
199 " Coulomb scattering. Simulation of elastic 199 " Coulomb scattering. Simulation of elastic scattering\n" <<
200 " events individually. May be used in com 200 " events individually. May be used in combination with multiple\n" <<
201 " scattering, where Coulomb scattering is 201 " scattering, where Coulomb scattering is used for hard (large angle)\n" <<
202 " collisions and multiple scattering for 202 " collisions and multiple scattering for soft collisions.";
203 G4VEmProcess::ProcessDescription(out); 203 G4VEmProcess::ProcessDescription(out);
204 } 204 }
205 205
206 //....oooOO0OOooo........oooOO0OOooo........oo 206 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
207 207