source: trunk/source/processes/electromagnetic/standard/src/G4eBremsstrahlung.cc @ 1316

Last change on this file since 1316 was 1228, checked in by garnier, 14 years ago

update geant4.9.3 tag
File size: 6.5 KB
Line 
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25//
26// $Id: G4eBremsstrahlung.cc,v 1.56 2009/02/20 12:06:37 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-03 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class file
32//
33//
34// File name:     G4eBremsstrahlung
35//
36// Author:        Michel Maire
37//
38// Creation date: 26.06.1996
39//
40// Modifications:
41//
42// 26-09-96 extension of the total crosssection above 100 GeV, M.Maire
43//  1-10-96 new type G4OrderedTable; ComputePartialSumSigma(), M.Maire
44// 16-10-96 DoIt() call to the non static GetEnergyCuts(), L.Urban
45// 13-12-96 Sign corrected in grejmax and greject
46//          error definition of screenvar, L.Urban
47// 20-03-97 new energy loss+ionisation+brems scheme, L.Urban
48// 07-04-98 remove 'tracking cut' of the diffracted particle, MMa
49// 13-08-98 new methods SetBining() PrintInfo()
50// 03-03-99 Bug fixed in LPM effect, L.Urban
51// 10-02-00 modifications , new e.m. structure, L.Urban
52// 07-08-00 new cross section/en.loss parametrisation, LPM flag , L.Urban
53// 21-09-00 corrections in the LPM implementation, L.Urban
54// 28-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation
55// 09-08-01 new methods Store/Retrieve PhysicsTable (mma)
56// 17-09-01 migration of Materials to pure STL (mma)
57// 21-09-01 completion of RetrievePhysicsTable() (mma)
58// 29-10-01 all static functions no more inlined (mma)
59// 08-11-01 particleMass becomes a local variable
60// 30-04-02 V.Ivanchenko update to new design
61// 23-12-02 Change interface in order to move to cut per region (VI)
62// 26-12-02 Secondary production moved to derived classes (VI)
63// 23-05-03 Define default integral + BohrFluctuations (V.Ivanchenko)
64// 08-08-03 STD substitute standard  (V.Ivanchenko)
65// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
66// 04-11-04 add gamma threshold (V.Ivanchenko)
67// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
68// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
69// 22-05-06 Use gammaThreshold from manager (V.Ivantchenko)
70// 15-01-07 use SetEmModel() from G4VEnergyLossProcess (mma)
71//          use RelEmModel above 1GeV (AS &  VI) 
72// 13-11-08 reenable LPM switch (A.Schaelicke)
73// -------------------------------------------------------------------
74//
75//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
76//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
77
78#include "G4eBremsstrahlung.hh"
79#include "G4Gamma.hh"
80#include "G4eBremsstrahlungModel.hh"
81#include "G4eBremsstrahlungRelModel.hh"
82#include "G4UnitsTable.hh"
83#include "G4LossTableManager.hh"
84
85#include "G4ProductionCutsTable.hh"
86#include "G4MaterialCutsCouple.hh"
87
88//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
89
90using namespace std;
91 
92G4eBremsstrahlung::G4eBremsstrahlung(const G4String& name):
93  G4VEnergyLossProcess(name), 
94  isInitialised(false)
95{
96  SetProcessSubType(fBremsstrahlung);
97}
98
99//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
100
101G4eBremsstrahlung::~G4eBremsstrahlung()
102{}
103
104//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
105
106G4bool G4eBremsstrahlung::IsApplicable(const G4ParticleDefinition& p)
107{
108  return (&p == G4Electron::Electron() || &p == G4Positron::Positron());
109}
110
111//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
112
113void G4eBremsstrahlung::InitialiseEnergyLossProcess(
114                                                const G4ParticleDefinition* p,
115                                                const G4ParticleDefinition*)
116{
117  if(!isInitialised) {
118    particle = p;
119    SetSecondaryParticle(G4Gamma::Gamma());
120    SetIonisation(false);
121
122    if (!EmModel(1)) SetEmModel(new G4eBremsstrahlungModel(), 1);
123    if (!EmModel(2)) SetEmModel(new G4eBremsstrahlungRelModel(), 2);
124
125    EmModel(1)->SetLowEnergyLimit(MinKinEnergy());
126    EmModel(1)->SetHighEnergyLimit(EmModel(2)->LowEnergyLimit());
127    EmModel(2)->SetHighEnergyLimit(MaxKinEnergy());
128               
129    G4VEmFluctuationModel* fm = 0;
130    AddEmModel(1, EmModel(1), fm);
131    AddEmModel(2, EmModel(2), fm);
132    isInitialised = true;
133  }
134  G4LossTableManager* man = G4LossTableManager::Instance(); 
135  G4double eth = man->BremsstrahlungTh(); 
136  EmModel(1)->SetSecondaryThreshold(eth);
137  EmModel(2)->SetSecondaryThreshold(eth);
138
139  // Only high energy model LMP flag is ON/OFF
140  EmModel(1)->SetLPMFlag(false);
141  EmModel(2)->SetLPMFlag(man->LPMFlag());
142}
143
144//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
145
146void G4eBremsstrahlung::PrintInfo()
147{
148  if(EmModel(1)) {
149    G4LossTableManager* man = G4LossTableManager::Instance(); 
150    G4double eth = man->BremsstrahlungTh(); 
151    G4cout << "      LPM flag: " << man->LPMFlag() << " for E > " 
152           << EmModel(1)->HighEnergyLimit()/GeV << " GeV";
153    if(eth < DBL_MAX) G4cout << ",  HighEnergyThreshold(GeV)= " << eth/GeV; 
154    G4cout << G4endl;
155  }
156}
157
158//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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