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G4UniversalFluctuation.hh
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25 //
26 // $Id$
27 //
28 // -------------------------------------------------------------------
29 //
30 // GEANT4 Class header file
31 //
32 //
33 // File name: G4UniversalFluctuation
34 //
35 // Author: V.Ivanchenko make a class with the Laszlo Urban model
36 //
37 // Creation date: 03.01.2002
38 //
39 // Modifications:
40 //
41 // 09-12-02 remove warnings (V.Ivanchenko)
42 // 28-12-02 add method Dispersion (V.Ivanchenko)
43 // 07-02-03 change signature (V.Ivanchenko)
44 // 13-02-03 Add name (V.Ivanchenko)
45 // 16-10-03 Changed interface to Initialisation (V.Ivanchenko)
46 // 07-02-05 define problim = 5.e-3 (mma)
47 //
48 // Class Description:
49 //
50 // Implementation of energy loss fluctuations
51 
52 // -------------------------------------------------------------------
53 //
54 
55 #ifndef G4UniversalFluctuation_h
56 #define G4UniversalFluctuation_h 1
57 
58 
59 #include "G4VEmFluctuationModel.hh"
60 #include "G4ParticleDefinition.hh"
61 
63 {
64 
65 public:
66 
67  G4UniversalFluctuation(const G4String& nam = "UniFluc");
68 
69  virtual ~G4UniversalFluctuation();
70 
71  virtual G4double SampleFluctuations(const G4Material*,
72  const G4DynamicParticle*,
73  G4double&,
74  G4double&,
75  G4double&);
76 
77  virtual G4double Dispersion( const G4Material*,
78  const G4DynamicParticle*,
79  G4double&,
80  G4double&);
81 
82  virtual void InitialiseMe(const G4ParticleDefinition*);
83 
84  // Initialisation prestep
85  virtual void SetParticleAndCharge(const G4ParticleDefinition*, G4double q2);
86 
87 private:
88 
89  // hide assignment operator
92 
93  const G4ParticleDefinition* particle;
94  const G4Material* lastMaterial;
95 
96  G4double particleMass;
97  G4double chargeSquare;
98 
99  // data members to speed up the fluctuation calculation
100  G4double ipotFluct;
101  G4double electronDensity;
102 
103  G4double f1Fluct;
104  G4double f2Fluct;
105  G4double e1Fluct;
106  G4double e2Fluct;
107  G4double e1LogFluct;
108  G4double e2LogFluct;
109  G4double ipotLogFluct;
110  G4double e0;
111  G4double esmall;
112 
113  G4double e1,e2;
114 
115  G4double minNumberInteractionsBohr;
116  G4double theBohrBeta2;
117  G4double minLoss;
118  G4double nmaxCont;
119  G4double rate,fw;
120 
121 
122 };
123 
124 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
125 
126 #endif
127