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MyG4MuIonisationNoDelta.cc
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27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class file
30 //
31 //
32 // File name: MyG4MuIonisationNoDelta
33 //
34 // Author: Laszlo Urban
35 //
36 // Creation date: 30.09.1997
37 //
38 // Modifications:
39 //
40 // 08-04-98 remove 'tracking cut' of the ionizing particle (mma)
41 // 26-10-98 new stuff from R.Kokoulin + cleanup , L.Urban
42 // 10-02-00 modifications , new e.m. structure, L.Urban
43 // 23-03-01 R.Kokoulin's correction is commented out, L.Urban
44 // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
45 // 10-08-01 new methods Store/Retrieve PhysicsTable (mma)
46 // 28-08-01 new function ComputeRestrictedMeandEdx() + 'cleanup' (mma)
47 // 17-09-01 migration of Materials to pure STL (mma)
48 // 26-09-01 completion of RetrievePhysicsTable (mma)
49 // 29-10-01 all static functions no more inlined (mma)
50 // 07-11-01 correction(Tmax+xsection computation) L.Urban
51 // 08-11-01 particleMass becomes a local variable (mma)
52 // 10-05-02 V.Ivanchenko update to new design
53 // 04-12-02 V.Ivanchenko the low energy limit for Kokoulin model to 10 GeV
54 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
55 // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
56 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
57 // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko)
58 // 03-06-03 Add SetIntegral method to choose fluctuation model (V.Ivanchenko)
59 // 03-06-03 Fix initialisation problem for STD ionisation (V.Ivanchenko)
60 // 04-08-03 Set integral=false to be default (V.Ivanchenko)
61 // 08-08-03 STD substitute standard (V.Ivanchenko)
62 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
63 // 10-02-04 Calculation of radiative corrections using R.Kokoulin model (V.I.)
64 // 27-05-04 Set integral to be a default regime (V.Ivanchenko)
65 // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko)
66 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
67 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
68 // 12-08-05 SetStepLimits(0.2, 0.1*mm) (mma)
69 // 02-09-05 SetStepLimits(0.2, 1*mm) (V.Ivantchenko)
70 // 12-08-05 SetStepLimits(0.2, 0.1*mm) + integral off (V.Ivantchenko)
71 // 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko)
72 // 05-01-22 D.Rivera: imported into artg4tk based on :
73 // geant4.10.06.p01/source/processes/electromagnetic/muons/src/G4MuIonisation.cc
74 // Replaced mid- and high- energy ionisation models to invoke the
75 // BetheBlochNoDeltaModel in order to avoid delta production for
76 // PDSP ioLaser simulations.
77 //
78 // -------------------------------------------------------------------
79 //
80 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
82 
84 
85 #include "Geant4/G4PhysicalConstants.hh"
86 #include "Geant4/G4SystemOfUnits.hh"
87 #include "Geant4/G4Electron.hh"
88 #include "Geant4/G4MuonPlus.hh"
89 #include "Geant4/G4MuonMinus.hh"
90 #include "Geant4/G4BraggModel.hh"
91 #include "Geant4/G4BetheBlochModel.hh"
92 
93 #include "Geant4/G4MuBetheBlochModel.hh"
94 #include "Geant4/G4BetheBlochNoDeltaModel.hh"
95 
96 #include "Geant4/G4UniversalFluctuation.hh"
97 #include "Geant4/G4IonFluctuations.hh"
98 #include "Geant4/G4BohrFluctuations.hh"
99 #include "Geant4/G4UnitsTable.hh"
100 #include "Geant4/G4ICRU73QOModel.hh"
101 #include "Geant4/G4EmParameters.hh"
102 
103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
104 
105 using namespace std;
106 
108  : G4VEnergyLossProcess(name),
109  theParticle(nullptr),
110  theBaseParticle(nullptr),
111  isInitialised(false)
112 {
113  mass = ratio = 0;
114  SetProcessSubType(fIonisation);
115  SetSecondaryParticle(G4Electron::Electron());
116 }
117 
118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
119 
120 G4bool MyG4MuIonisationNoDelta::IsApplicable(const G4ParticleDefinition& p)
121 {
122  return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV);
123 }
124 
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
126 
127 G4double MyG4MuIonisationNoDelta::MinPrimaryEnergy(const G4ParticleDefinition*,
128  const G4Material*,
129  G4double cut)
130 {
131  G4double x = 0.5*cut/electron_mass_c2;
132  G4double gam = x*ratio + std::sqrt((1. + x)*(1. + x*ratio*ratio));
133  return mass*(gam - 1.0);
134 }
135 
136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
137 
139  const G4ParticleDefinition* bpart)
140 {
141  if(!isInitialised) {
142 
143  theParticle = part;
144  theBaseParticle = bpart;
145 
146  mass = theParticle->GetPDGMass();
147  G4double q = theParticle->GetPDGCharge();
148 
149  G4EmParameters* param = G4EmParameters::Instance();
150  G4double elow = 0.2*MeV;
151  G4double emax = param->MaxKinEnergy();
152  G4double ehigh = std::min(1*GeV, emax);
153 
154  // Bragg peak model
155  if (!EmModel(0)) {
156  if(q > 0.0) { SetEmModel(new G4BraggModel()); }
157  else { SetEmModel(new G4ICRU73QOModel()); }
158  }
159  EmModel(0)->SetLowEnergyLimit(param->MinKinEnergy());
160  EmModel(0)->SetHighEnergyLimit(elow);
161  AddEmModel(1, EmModel(0), new G4IonFluctuations());
162 
163  // high energy fluctuation model
164  if (!FluctModel()) { SetFluctModel(new G4UniversalFluctuation()); }
165 
166  // moderate energy model
167  //if (!EmModel(1)) { SetEmModel(new G4BetheBlochModel()); }
168  if (!EmModel(1)) { SetEmModel(new G4BetheBlochNoDeltaModel()); }
169  EmModel(1)->SetLowEnergyLimit(elow);
170  EmModel(1)->SetHighEnergyLimit(ehigh);
171  AddEmModel(2, EmModel(1), FluctModel());
172 
173  // high energy model
174  if(ehigh < emax) {
175  //if (!EmModel(2)) { SetEmModel(new G4MuBetheBlochModel()); }
176  if (!EmModel(2)) { SetEmModel(new G4BetheBlochNoDeltaModel()); }
177  EmModel(2)->SetLowEnergyLimit(ehigh);
178  EmModel(2)->SetHighEnergyLimit(emax);
179  AddEmModel(3, EmModel(2), FluctModel());
180  }
181  ratio = electron_mass_c2/mass;
182  isInitialised = true;
183  }
184 }
185 
186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
187 
189 {}
190 
191 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
192 
193 void MyG4MuIonisationNoDelta::ProcessDescription(std::ostream& out) const
194 {
195  out << " Muon ionisation with NO delta production";
196  G4VEnergyLossProcess::ProcessDescription(out);
197 }
198 
199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
Float_t x
Definition: compare.C:6
virtual G4bool IsApplicable(const G4ParticleDefinition &p) override
STL namespace.
const G4ParticleDefinition * theBaseParticle
const G4ParticleDefinition * theParticle
virtual G4double MinPrimaryEnergy(const G4ParticleDefinition *p, const G4Material *, G4double cut) override
MyG4MuIonisationNoDelta(const G4String &name="muIoni")
TString part[npart]
Definition: Style.C:32
virtual void PrintInfo() override
virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition *, const G4ParticleDefinition *) override
virtual void ProcessDescription(std::ostream &) const override