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25 // 25 //
>> 26 //
26 // ------------------------------------------- 27 // -------------------------------------------------------------------
27 // 28 //
28 // GEANT4 Class file 29 // GEANT4 Class file
29 // 30 //
30 // 31 //
31 // File name: G4hIonisation 32 // File name: G4hIonisation
32 // 33 //
33 // Author: Laszlo Urban 34 // Author: Laszlo Urban
34 // 35 //
35 // Creation date: 30.05.1997 36 // Creation date: 30.05.1997
36 // 37 //
37 // Modified by Laszlo Urban, Michel Maire and 38 // Modified by Laszlo Urban, Michel Maire and Vladimir Ivanchenko
38 // 39 //
>> 40 //
39 // ------------------------------------------- 41 // -------------------------------------------------------------------
40 // 42 //
41 //....oooOO0OOooo........oooOO0OOooo........oo 43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
42 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 45
44 #include "G4hIonisation.hh" 46 #include "G4hIonisation.hh"
45 #include "G4PhysicalConstants.hh" 47 #include "G4PhysicalConstants.hh"
46 #include "G4SystemOfUnits.hh" 48 #include "G4SystemOfUnits.hh"
47 #include "G4Electron.hh" 49 #include "G4Electron.hh"
48 #include "G4Proton.hh" 50 #include "G4Proton.hh"
49 #include "G4AntiProton.hh" 51 #include "G4AntiProton.hh"
50 #include "G4BraggModel.hh" 52 #include "G4BraggModel.hh"
51 #include "G4BetheBlochModel.hh" 53 #include "G4BetheBlochModel.hh"
52 #include "G4EmStandUtil.hh" << 54 #include "G4IonFluctuations.hh"
>> 55 #include "G4UniversalFluctuation.hh"
>> 56 #include "G4BohrFluctuations.hh"
>> 57 #include "G4UnitsTable.hh"
53 #include "G4PionPlus.hh" 58 #include "G4PionPlus.hh"
54 #include "G4PionMinus.hh" 59 #include "G4PionMinus.hh"
55 #include "G4KaonPlus.hh" 60 #include "G4KaonPlus.hh"
56 #include "G4KaonMinus.hh" 61 #include "G4KaonMinus.hh"
57 #include "G4ICRU73QOModel.hh" 62 #include "G4ICRU73QOModel.hh"
58 #include "G4EmParameters.hh" 63 #include "G4EmParameters.hh"
59 64
60 //....oooOO0OOooo........oooOO0OOooo........oo 65 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
61 66
>> 67 using namespace std;
>> 68
62 G4hIonisation::G4hIonisation(const G4String& n 69 G4hIonisation::G4hIonisation(const G4String& name)
63 : G4VEnergyLossProcess(name) << 70 : G4VEnergyLossProcess(name),
>> 71 isInitialised(false)
64 { 72 {
65 SetProcessSubType(fIonisation); 73 SetProcessSubType(fIonisation);
66 SetSecondaryParticle(G4Electron::Electron()) 74 SetSecondaryParticle(G4Electron::Electron());
67 eth = 2*CLHEP::MeV; << 75 mass = 0.0;
>> 76 ratio = 0.0;
>> 77 eth = 2*MeV;
68 } 78 }
69 79
70 //....oooOO0OOooo........oooOO0OOooo........oo 80 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
71 81
72 G4bool G4hIonisation::IsApplicable(const G4Par << 82 G4hIonisation::~G4hIonisation()
>> 83 {}
>> 84
>> 85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 86
>> 87 G4bool G4hIonisation::IsApplicable(const G4ParticleDefinition& p)
73 { 88 {
74 return true; << 89 return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV &&
>> 90 !p.IsShortLived());
75 } 91 }
76 92
77 //....oooOO0OOooo........oooOO0OOooo........oo 93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78 94
79 G4double G4hIonisation::MinPrimaryEnergy(const 95 G4double G4hIonisation::MinPrimaryEnergy(const G4ParticleDefinition*,
80 const G4Material*, 96 const G4Material*,
81 G4double cut) 97 G4double cut)
82 { 98 {
83 G4double x = 0.5*cut/electron_mass_c2; 99 G4double x = 0.5*cut/electron_mass_c2;
84 G4double gam = x*ratio + std::sqrt((1. + x)* 100 G4double gam = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio));
85 return mass*(gam - 1.0); 101 return mass*(gam - 1.0);
86 } 102 }
87 103
88 //....oooOO0OOooo........oooOO0OOooo........oo 104 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89 105
90 void G4hIonisation::InitialiseEnergyLossProces 106 void G4hIonisation::InitialiseEnergyLossProcess(
91 const G4ParticleDefinition* part, 107 const G4ParticleDefinition* part,
92 const G4ParticleDefinition* bpart) 108 const G4ParticleDefinition* bpart)
93 { 109 {
94 if(!isInitialised) { 110 if(!isInitialised) {
95 111
96 const G4ParticleDefinition* theBaseParticl 112 const G4ParticleDefinition* theBaseParticle = nullptr;
97 G4String pname = part->GetParticleName(); 113 G4String pname = part->GetParticleName();
98 G4double q = part->GetPDGCharge(); 114 G4double q = part->GetPDGCharge();
99 115
100 //G4cout << " G4hIonisation::InitialiseEne 116 //G4cout << " G4hIonisation::InitialiseEnergyLossProcess " << pname
101 // << " " << bpart << G4endl; 117 // << " " << bpart << G4endl;
102 118
103 // define base particle << 119 // standard base particles
104 if(part == bpart) { << 120 if(part == bpart || pname == "proton" ||
105 theBaseParticle = nullptr; << 121 pname == "anti_proton" ||
106 } else if(nullptr != bpart) { << 122 pname == "pi+" || pname == "pi-" ||
107 theBaseParticle = bpart; << 123 pname == "kaon+" || pname == "kaon-" || pname == "GenericIon"
108 << 124 || pname == "He3" || pname == "alpha")
109 } else if(pname == "proton" || pname == "a << 125 {
110 pname == "pi+" || pname == "pi-" || << 126 theBaseParticle = nullptr;
111 pname == "kaon+" || pname == "kaon-" | << 127 }
112 pname == "GenericIon" || pname == "alp << 128 // select base particle
113 // no base particles << 129 else if(bpart == nullptr) {
114 theBaseParticle = nullptr; <<
115 130
116 } else { <<
117 // select base particle <<
118 if(part->GetPDGSpin() == 0.0) { 131 if(part->GetPDGSpin() == 0.0) {
119 if(q > 0.0) { theBaseParticle = G4KaonPlus:: 132 if(q > 0.0) { theBaseParticle = G4KaonPlus::KaonPlus(); }
120 else { theBaseParticle = G4KaonMinus::KaonMi 133 else { theBaseParticle = G4KaonMinus::KaonMinus(); }
121 } else { 134 } else {
122 if(q > 0.0) { theBaseParticle = G4Proton::Pr 135 if(q > 0.0) { theBaseParticle = G4Proton::Proton(); }
123 else { theBaseParticle = G4AntiProton::AntiP 136 else { theBaseParticle = G4AntiProton::AntiProton(); }
124 } 137 }
>> 138
>> 139 // base particle defined by interface
>> 140 } else {
>> 141 theBaseParticle = bpart;
125 } 142 }
126 SetBaseParticle(theBaseParticle); 143 SetBaseParticle(theBaseParticle);
127 144
128 // model limit defined for protons <<
129 mass = part->GetPDGMass(); 145 mass = part->GetPDGMass();
130 ratio = electron_mass_c2/mass; 146 ratio = electron_mass_c2/mass;
131 eth = 2.0*MeV*mass/proton_mass_c2; 147 eth = 2.0*MeV*mass/proton_mass_c2;
132 148
133 G4EmParameters* param = G4EmParameters::In 149 G4EmParameters* param = G4EmParameters::Instance();
134 G4double emin = param->MinKinEnergy(); << 150 G4double emin = std::min(param->MinKinEnergy(), 0.1*eth);
135 G4double emax = param->MaxKinEnergy(); << 151 G4double emax = std::max(param->MaxKinEnergy(), 100*eth);
136 152
137 // define model of energy loss fluctuation << 153 if(emin != param->MinKinEnergy() || emax != param->MaxKinEnergy()) {
138 if (nullptr == FluctModel()) { << 154 SetMinKinEnergy(emin);
139 G4bool ion = (pname == "GenericIon" || p << 155 SetMaxKinEnergy(emax);
140 SetFluctModel(G4EmStandUtil::ModelOfFluc << 156 G4int bin = G4lrint(param->NumberOfBinsPerDecade()*std::log10(emax/emin));
>> 157 SetDEDXBinning(bin);
141 } 158 }
142 159
143 if (nullptr == EmModel(0)) { << 160 if (!EmModel(0)) {
144 if(q > 0.0) { SetEmModel(new G4BraggMode 161 if(q > 0.0) { SetEmModel(new G4BraggModel()); }
145 else { SetEmModel(new G4ICRU73QOM 162 else { SetEmModel(new G4ICRU73QOModel()); }
146 } 163 }
147 // to compute ranges correctly we have to <<
148 // model even if activation limit is high <<
149 EmModel(0)->SetLowEnergyLimit(emin); 164 EmModel(0)->SetLowEnergyLimit(emin);
>> 165 EmModel(0)->SetHighEnergyLimit(eth);
>> 166 AddEmModel(1, EmModel(0), new G4IonFluctuations());
>> 167
>> 168 if (!FluctModel()) { SetFluctModel(new G4UniversalFluctuation()); }
>> 169
>> 170 if (!EmModel(1)) { SetEmModel(new G4BetheBlochModel()); }
>> 171 EmModel(1)->SetLowEnergyLimit(eth);
>> 172 EmModel(1)->SetHighEnergyLimit(emax);
>> 173 AddEmModel(1, EmModel(1), FluctModel());
150 174
151 // high energy limit may be eth or DBL_MAX <<
152 G4double emax1 = (EmModel(0)->HighEnergyLi <<
153 EmModel(0)->SetHighEnergyLimit(emax1); <<
154 AddEmModel(1, EmModel(0), FluctModel()); <<
155 <<
156 // second model is used if the first does <<
157 if(emax1 < emax) { <<
158 if (nullptr == EmModel(1)) { SetEmModel( <<
159 EmModel(1)->SetLowEnergyLimit(emax1); <<
160 <<
161 // for extremely heavy particles upper l <<
162 // should be increased <<
163 emax = std::max(emax, eth*10); <<
164 EmModel(1)->SetHighEnergyLimit(emax); <<
165 AddEmModel(2, EmModel(1), FluctModel()); <<
166 } <<
167 isInitialised = true; 175 isInitialised = true;
168 } 176 }
169 } 177 }
170 178
171 //....oooOO0OOooo........oooOO0OOooo........oo 179 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
172 180
>> 181 void G4hIonisation::PrintInfo()
>> 182 {}
>> 183
>> 184 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 185
173 void G4hIonisation::ProcessDescription(std::os 186 void G4hIonisation::ProcessDescription(std::ostream& out) const
174 { 187 {
175 out << " Hadron ionisation"; << 188 out << " Ionisation";
176 G4VEnergyLossProcess::ProcessDescription(out 189 G4VEnergyLossProcess::ProcessDescription(out);
177 } 190 }
178 191
179 //....oooOO0OOooo........oooOO0OOooo........oo 192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
180 193