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G4eBremsstrahlung.cc
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26 // $Id: G4eBremsstrahlung.cc 107058 2017-11-01 14:54:12Z gcosmo $
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class file
31 //
32 //
33 // File name: G4eBremsstrahlung
34 //
35 // Author: Michel Maire
36 //
37 // Creation date: 26.06.1996
38 //
39 // Modifications:
40 //
41 // 26-09-96 extension of the total crosssection above 100 GeV, M.Maire
42 // 1-10-96 new type G4OrderedTable; ComputePartialSumSigma(), M.Maire
43 // 16-10-96 DoIt() call to the non static GetEnergyCuts(), L.Urban
44 // 13-12-96 Sign corrected in grejmax and greject
45 // error definition of screenvar, L.Urban
46 // 20-03-97 new energy loss+ionisation+brems scheme, L.Urban
47 // 07-04-98 remove 'tracking cut' of the diffracted particle, MMa
48 // 13-08-98 new methods SetBining() PrintInfo()
49 // 03-03-99 Bug fixed in LPM effect, L.Urban
50 // 10-02-00 modifications , new e.m. structure, L.Urban
51 // 07-08-00 new cross section/en.loss parametrisation, LPM flag , L.Urban
52 // 21-09-00 corrections in the LPM implementation, L.Urban
53 // 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
54 // 09-08-01 new methods Store/Retrieve PhysicsTable (mma)
55 // 17-09-01 migration of Materials to pure STL (mma)
56 // 21-09-01 completion of RetrievePhysicsTable() (mma)
57 // 29-10-01 all static functions no more inlined (mma)
58 // 08-11-01 particleMass becomes a local variable
59 // 30-04-02 V.Ivanchenko update to new design
60 // 23-12-02 Change interface in order to move to cut per region (VI)
61 // 26-12-02 Secondary production moved to derived classes (VI)
62 // 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko)
63 // 08-08-03 STD substitute standard (V.Ivanchenko)
64 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
65 // 04-11-04 add gamma threshold (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 // 22-05-06 Use gammaThreshold from manager (V.Ivantchenko)
69 // 15-01-07 use SetEmModel() from G4VEnergyLossProcess (mma)
70 // use RelEmModel above 1GeV (AS & VI)
71 // 13-11-08 reenable LPM switch (A.Schaelicke)
72 // -------------------------------------------------------------------
73 //
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
76 
77 #include "G4eBremsstrahlung.hh"
78 #include "G4SystemOfUnits.hh"
79 #include "G4Gamma.hh"
80 #include "G4SeltzerBergerModel.hh"
82 #include "G4UnitsTable.hh"
83 #include "G4LossTableManager.hh"
84 
85 #include "G4ProductionCutsTable.hh"
86 #include "G4MaterialCutsCouple.hh"
87 #include "G4EmParameters.hh"
88 
89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
90 
91 using namespace std;
92 
94  G4VEnergyLossProcess(name),
95  isInitialised(false)
96 {
99  SetIonisation(false);
100 }
101 
102 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
103 
105 {}
106 
107 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
108 
110 {
111  return (&p == G4Electron::Electron() || &p == G4Positron::Positron());
112 }
113 
114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
115 
116 void
118  const G4ParticleDefinition*)
119 {
120  if(!isInitialised) {
122 
123  G4double emin = param->MinKinEnergy();
124  G4double emax = param->MaxKinEnergy();
125  G4double energyLimit = std::min(emax, GeV);
126  G4VEmFluctuationModel* fm = nullptr;
127 
128  if (!EmModel(0)) { SetEmModel(new G4SeltzerBergerModel()); }
129  EmModel(0)->SetLowEnergyLimit(emin);
130  EmModel(0)->SetHighEnergyLimit(energyLimit);
132  EmModel(0)->SetLPMFlag(false);
133  AddEmModel(1, EmModel(0), fm);
134 
135  if(emax > energyLimit) {
136  if (!EmModel(1)) { SetEmModel(new G4eBremsstrahlungRelModel()); }
137  EmModel(1)->SetLowEnergyLimit(energyLimit);
138  EmModel(1)->SetHighEnergyLimit(emax);
140  EmModel(1)->SetLPMFlag(param->LPM());
141  AddEmModel(1, EmModel(1), fm);
142  }
143  isInitialised = true;
144  }
145 }
146 
147 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
148 
150  G4String endOfLine) const
151 {
152  if(EmModel(0)) {
154  G4double eth = param->BremsstrahlungTh();
155  out << " LPM flag: " << param->LPM() << " for E > "
156  << EmModel(0)->HighEnergyLimit()/GeV << " GeV";
157  if(eth < DBL_MAX) {
158  out << ", VertexHighEnergyTh(GeV)= " << eth/GeV;
159  }
160  out << endOfLine;
161  }
162 }
163 
164 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
165 
166 void G4eBremsstrahlung::ProcessDescription(std::ostream& out) const
167 {
168  out << "<strong>Bremsstrahlung</strong>";
170 }
171 
172 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
G4double BremsstrahlungTh() const
const XML_Char * name
Definition: expat.h:151
void SetEmModel(G4VEmModel *, G4int index=0)
void SetHighEnergyLimit(G4double)
Definition: G4VEmModel.hh:707
const char * p
Definition: xmltok.h:285
virtual void ProcessDescription(std::ostream &) const override
G4double MaxKinEnergy() const
G4bool LPM() const
static const G4double emax
static G4Gamma * Gamma()
Definition: G4Gamma.cc:86
void SetLPMFlag(G4bool val)
Definition: G4VEmModel.hh:756
double G4double
Definition: G4Types.hh:76
bool G4bool
Definition: G4Types.hh:79
void SetIonisation(G4bool val)
void AddEmModel(G4int, G4VEmModel *, G4VEmFluctuationModel *fluc=0, const G4Region *region=nullptr)
static G4Positron * Positron()
Definition: G4Positron.cc:94
static G4Electron * Electron()
Definition: G4Electron.cc:94
G4double MinKinEnergy() const
void SetSecondaryThreshold(G4double)
Definition: G4VEmModel.hh:749
void SetSecondaryParticle(const G4ParticleDefinition *p)
virtual void StreamProcessInfo(std::ostream &outFile, G4String endOfLine=G4String("\n")) const override
void SetLowEnergyLimit(G4double)
Definition: G4VEmModel.hh:714
G4VEmModel * EmModel(size_t index=0) const
virtual G4bool IsApplicable(const G4ParticleDefinition &p) final
void SetProcessSubType(G4int)
Definition: G4VProcess.hh:435
G4eBremsstrahlung(const G4String &name="eBrem")
G4double HighEnergyLimit() const
Definition: G4VEmModel.hh:609
#define DBL_MAX
Definition: templates.hh:83
static constexpr double GeV
Definition: G4SIunits.hh:217
static G4EmParameters * Instance()
T min(const T t1, const T t2)
brief Return the smallest of the two arguments
virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition *, const G4ParticleDefinition *) override
virtual void ProcessDescription(std::ostream &outFile) const override