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25 // 25 //
>> 26 // $Id: G4hIonisation.cc,v 1.70 2008/01/14 11:59:45 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-01-patch-01 $
>> 28 //
26 // ------------------------------------------- 29 // -------------------------------------------------------------------
27 // 30 //
28 // GEANT4 Class file 31 // GEANT4 Class file
29 // 32 //
30 // 33 //
31 // File name: G4hIonisation 34 // File name: G4hIonisation
32 // 35 //
33 // Author: Laszlo Urban 36 // Author: Laszlo Urban
34 // 37 //
35 // Creation date: 30.05.1997 38 // Creation date: 30.05.1997
36 // 39 //
37 // Modified by Laszlo Urban, Michel Maire and << 40 // Modifications:
>> 41 //
>> 42 // corrected by L.Urban on 24/09/97
>> 43 // several bugs corrected by L.Urban on 13/01/98
>> 44 // 07-04-98 remove 'tracking cut' of the ionizing particle, mma
>> 45 // 22-10-98 cleanup L.Urban
>> 46 // 02-02-99 bugs fixed , L.Urban
>> 47 // 29-07-99 correction in BuildLossTable for low energy, L.Urban
>> 48 // 10-02-00 modifications , new e.m. structure, L.Urban
>> 49 // 10-08-00 V.Ivanchenko change BuildLambdaTable, in order to
>> 50 // simulate energy losses of ions; correction to
>> 51 // cross section for particles with spin 1 is inserted as well
>> 52 // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
>> 53 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
>> 54 // 14-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
>> 55 // 29-08-01 PostStepDoIt: correction for spin 1/2 (instead of 1) (mma)
>> 56 // 17-09-01 migration of Materials to pure STL (mma)
>> 57 // 25-09-01 completion of RetrievePhysicsTable() (mma)
>> 58 // 29-10-01 all static functions no more inlined
>> 59 // 08-11-01 Charge renamed zparticle; added to the dedx
>> 60 // 27-03-02 Bug fix in scaling of lambda table (V.Ivanchenko)
>> 61 // 09-04-02 Update calculation of tables for GenericIons (V.Ivanchenko)
>> 62 // 30-04-02 V.Ivanchenko update to new design
>> 63 // 04-12-02 Add verbose level definition (VI)
>> 64 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
>> 65 // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
>> 66 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
>> 67 // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko)
>> 68 // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
>> 69 // 04-08-03 Set integral=false to be default (V.Ivanchenko)
>> 70 // 08-08-03 STD substitute standard (V.Ivanchenko)
>> 71 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
>> 72 // 27-05-04 Set integral to be a default regime (V.Ivanchenko)
>> 73 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
>> 74 // 24-03-05 Optimize internal interfaces (V.Ivantchenko)
>> 75 // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma)
>> 76 // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivanchenko)
>> 77 // 26-05-06 scale negative particles from pi- and pbar,
>> 78 // positive from pi+ and p (VI)
>> 79 // 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma)
38 // 80 //
39 // ------------------------------------------- 81 // -------------------------------------------------------------------
40 // 82 //
41 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
42 //....oooOO0OOooo........oooOO0OOooo........oo 84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 85
44 #include "G4hIonisation.hh" 86 #include "G4hIonisation.hh"
45 #include "G4PhysicalConstants.hh" <<
46 #include "G4SystemOfUnits.hh" <<
47 #include "G4Electron.hh" 87 #include "G4Electron.hh"
48 #include "G4Proton.hh" 88 #include "G4Proton.hh"
49 #include "G4AntiProton.hh" 89 #include "G4AntiProton.hh"
50 #include "G4BraggModel.hh" 90 #include "G4BraggModel.hh"
51 #include "G4BetheBlochModel.hh" 91 #include "G4BetheBlochModel.hh"
52 #include "G4EmStandUtil.hh" << 92 #include "G4UniversalFluctuation.hh"
>> 93 #include "G4BohrFluctuations.hh"
>> 94 #include "G4UnitsTable.hh"
53 #include "G4PionPlus.hh" 95 #include "G4PionPlus.hh"
54 #include "G4PionMinus.hh" 96 #include "G4PionMinus.hh"
55 #include "G4KaonPlus.hh" << 97 #include "G4LossTableManager.hh"
56 #include "G4KaonMinus.hh" <<
57 #include "G4ICRU73QOModel.hh" <<
58 #include "G4EmParameters.hh" <<
59 98
60 //....oooOO0OOooo........oooOO0OOooo........oo 99 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
61 100
62 G4hIonisation::G4hIonisation(const G4String& n << 101 using namespace std;
63 : G4VEnergyLossProcess(name) <<
64 { <<
65 SetProcessSubType(fIonisation); <<
66 SetSecondaryParticle(G4Electron::Electron()) <<
67 eth = 2*CLHEP::MeV; <<
68 } <<
69 <<
70 //....oooOO0OOooo........oooOO0OOooo........oo <<
71 102
72 G4bool G4hIonisation::IsApplicable(const G4Par << 103 G4hIonisation::G4hIonisation(const G4String& name)
>> 104 : G4VEnergyLossProcess(name),
>> 105 theParticle(0),
>> 106 theBaseParticle(0),
>> 107 isInitialised(false)
73 { 108 {
74 return true; << 109 SetStepFunction(0.2, 1*mm);
>> 110 SetIntegral(true);
>> 111 SetVerboseLevel(1);
>> 112 mass = 0.0;
>> 113 ratio = 0.0;
>> 114 corr = G4LossTableManager::Instance()->EmCorrections();
>> 115 nuclearStopping = true;
75 } 116 }
76 117
77 //....oooOO0OOooo........oooOO0OOooo........oo 118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
78 119
79 G4double G4hIonisation::MinPrimaryEnergy(const << 120 G4hIonisation::~G4hIonisation()
80 const G4Material*, << 121 {}
81 G4double cut) <<
82 { <<
83 G4double x = 0.5*cut/electron_mass_c2; <<
84 G4double gam = x*ratio + std::sqrt((1. + x)* <<
85 return mass*(gam - 1.0); <<
86 } <<
87 122
88 //....oooOO0OOooo........oooOO0OOooo........oo 123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89 124
90 void G4hIonisation::InitialiseEnergyLossProces 125 void G4hIonisation::InitialiseEnergyLossProcess(
91 const G4ParticleDefinition* part, 126 const G4ParticleDefinition* part,
92 const G4ParticleDefinition* bpart) 127 const G4ParticleDefinition* bpart)
93 { 128 {
94 if(!isInitialised) { << 129 if(isInitialised) return;
95 130
96 const G4ParticleDefinition* theBaseParticl << 131 theParticle = part;
97 G4String pname = part->GetParticleName(); << 132
98 G4double q = part->GetPDGCharge(); << 133 G4String pname = part->GetParticleName();
99 << 134
100 //G4cout << " G4hIonisation::InitialiseEne << 135 // standard base particles
101 // << " " << bpart << G4endl; << 136 if(part == bpart || pname == "proton" ||
102 << 137 pname == "anti_proton" || pname == "pi+" || pname == "pi-" )
103 // define base particle << 138 theBaseParticle = 0;
104 if(part == bpart) { << 139
105 theBaseParticle = nullptr; << 140 // select base particle
106 } else if(nullptr != bpart) { << 141 else if(bpart == 0) {
107 theBaseParticle = bpart; << 142
108 << 143 if(pname == "kaon+") theBaseParticle = G4PionPlus::PionPlus();
109 } else if(pname == "proton" || pname == "a << 144 else if(pname == "kaon-") theBaseParticle = G4PionMinus::PionMinus();
110 pname == "pi+" || pname == "pi-" || << 145 else if(part->GetPDGCharge() > 0.0) theBaseParticle = G4Proton::Proton();
111 pname == "kaon+" || pname == "kaon-" | << 146 else theBaseParticle = G4AntiProton::AntiProton();
112 pname == "GenericIon" || pname == "alp << 147
113 // no base particles << 148 } else theBaseParticle = bpart;
114 theBaseParticle = nullptr; << 149
115 << 150 SetBaseParticle(theBaseParticle);
116 } else { << 151 SetSecondaryParticle(G4Electron::Electron());
117 // select base particle << 152 mass = theParticle->GetPDGMass();
118 if(part->GetPDGSpin() == 0.0) { << 153 ratio = electron_mass_c2/mass;
119 if(q > 0.0) { theBaseParticle = G4KaonPlus:: << 154 massratio = 1.0;
120 else { theBaseParticle = G4KaonMinus::KaonMi << 155 if(theBaseParticle) massratio = theBaseParticle->GetPDGMass()/mass;
121 } else { << 156
122 if(q > 0.0) { theBaseParticle = G4Proton::Pr << 157 if (!EmModel(1)) SetEmModel(new G4BraggModel(),1);
123 else { theBaseParticle = G4AntiProton::AntiP << 158 EmModel(1)->SetLowEnergyLimit(100*eV);
124 } << 159 eth = 2.0*MeV*mass/proton_mass_c2;
125 } << 160 ethnuc = eth*50.0;
126 SetBaseParticle(theBaseParticle); << 161 EmModel(1)->SetHighEnergyLimit(eth);
127 << 162 if (!FluctModel()) SetFluctModel(new G4UniversalFluctuation());
128 // model limit defined for protons << 163 AddEmModel(1, EmModel(1), FluctModel());
129 mass = part->GetPDGMass(); << 164
130 ratio = electron_mass_c2/mass; << 165 if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2);
131 eth = 2.0*MeV*mass/proton_mass_c2; << 166 EmModel(2)->SetLowEnergyLimit(eth);
132 << 167 EmModel(2)->SetHighEnergyLimit(100*TeV);
133 G4EmParameters* param = G4EmParameters::In << 168 AddEmModel(2, EmModel(2), FluctModel());
134 G4double emin = param->MinKinEnergy(); << 169
135 G4double emax = param->MaxKinEnergy(); << 170 isInitialised = true;
136 <<
137 // define model of energy loss fluctuation <<
138 if (nullptr == FluctModel()) { <<
139 G4bool ion = (pname == "GenericIon" || p <<
140 SetFluctModel(G4EmStandUtil::ModelOfFluc <<
141 } <<
142 <<
143 if (nullptr == EmModel(0)) { <<
144 if(q > 0.0) { SetEmModel(new G4BraggMode <<
145 else { SetEmModel(new G4ICRU73QOM <<
146 } <<
147 // to compute ranges correctly we have to <<
148 // model even if activation limit is high <<
149 EmModel(0)->SetLowEnergyLimit(emin); <<
150 <<
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; <<
168 } <<
169 } 171 }
170 172
171 //....oooOO0OOooo........oooOO0OOooo........oo 173 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
172 174
173 void G4hIonisation::ProcessDescription(std::os << 175 void G4hIonisation::PrintInfo()
174 { 176 {
175 out << " Hadron ionisation"; << 177 if(EmModel(1) && EmModel(2))
176 G4VEnergyLossProcess::ProcessDescription(out << 178 G4cout << " Scaling relation is used from proton dE/dx and range."
>> 179 << "\n Delta cross sections and sampling from "
>> 180 << EmModel(2)->GetName() << " model for scaled energy > "
>> 181 << eth/MeV << " MeV"
>> 182 << "\n Parametrisation from "
>> 183 << EmModel(1)->GetName() << " for protons below."
>> 184 << " NuclearStopping= " << nuclearStopping
>> 185 << G4endl;
177 } 186 }
178 187
179 //....oooOO0OOooo........oooOO0OOooo........oo << 188 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 189
>> 190 void G4hIonisation::CorrectionsAlongStep(const G4MaterialCutsCouple* couple,
>> 191 const G4DynamicParticle* dp,
>> 192 G4double& eloss,
>> 193 G4double& s)
>> 194 {
>> 195 G4double ekin = dp->GetKineticEnergy();
>> 196 if(nuclearStopping && ekin < ethnuc) {
>> 197 G4double nloss = s*corr->NuclearDEDX(theParticle,couple->GetMaterial(),
>> 198 ekin - eloss*0.5);
>> 199 eloss += nloss;
>> 200 // G4cout << "G4ionIonisation::CorrectionsAlongStep: e= " << preKinEnergy
>> 201 // << " de= " << eloss << " NIEL= " << nloss << G4endl;
>> 202 fParticleChange.ProposeNonIonizingEnergyDeposit(nloss);
>> 203 }
>> 204 }
>> 205
>> 206 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
180 207