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>> 26 // $Id: G4UniversalFluctuation.hh,v 1.6.2.2 2010/02/01 16:31:17 gcosmo Exp $
>> 27 // GEANT4 tag $Name: geant4-09-02-patch-04 $
>> 28 //
26 // ------------------------------------------- 29 // -------------------------------------------------------------------
27 // 30 //
28 // GEANT4 Class header file 31 // GEANT4 Class header file
29 // 32 //
30 // 33 //
31 // File name: G4UniversalFluctuation 34 // File name: G4UniversalFluctuation
32 // 35 //
33 // Author: V.Ivanchenko make a class wi << 36 // Author: Vladimir Ivanchenko
34 // 37 //
35 // Creation date: 03.01.2002 38 // Creation date: 03.01.2002
36 // 39 //
37 // Modifications: 40 // Modifications:
38 // 41 //
>> 42 // 09-12-02 remove warnings (V.Ivanchenko)
>> 43 // 28-12-02 add method Dispersion (V.Ivanchenko)
>> 44 // 07-02-03 change signature (V.Ivanchenko)
>> 45 // 13-02-03 Add name (V.Ivanchenko)
>> 46 // 16-10-03 Changed interface to Initialisation (V.Ivanchenko)
>> 47 // 07-02-05 define problim = 5.e-3 (mma)
39 // 48 //
40 // Class Description: 49 // Class Description:
41 // 50 //
42 // Implementation of energy loss fluctuations << 51 // Implementation of energy loss fluctuations
43 52
44 // ------------------------------------------- 53 // -------------------------------------------------------------------
45 // 54 //
46 55
47 #ifndef G4UniversalFluctuation_h 56 #ifndef G4UniversalFluctuation_h
48 #define G4UniversalFluctuation_h 1 57 #define G4UniversalFluctuation_h 1
49 58
>> 59
50 #include "G4VEmFluctuationModel.hh" 60 #include "G4VEmFluctuationModel.hh"
51 #include "G4ParticleDefinition.hh" 61 #include "G4ParticleDefinition.hh"
52 #include "G4Poisson.hh" <<
53 #include <CLHEP/Random/RandomEngine.h> <<
54 62
55 class G4UniversalFluctuation : public G4VEmFlu 63 class G4UniversalFluctuation : public G4VEmFluctuationModel
56 { 64 {
57 65
58 public: 66 public:
59 67
60 explicit G4UniversalFluctuation(const G4Stri << 68 G4UniversalFluctuation(const G4String& nam = "UniFluc");
61 69
62 ~G4UniversalFluctuation() override; << 70 virtual ~G4UniversalFluctuation();
63 71
64 G4double SampleFluctuations(const G4Material << 72 G4double SampleFluctuations(const G4Material*,
65 const G4DynamicParticle*, << 73 const G4DynamicParticle*,
66 const G4double, << 74 G4double&,
67 const G4double, const G4double) ov << 75 G4double&,
68 << 76 G4double&);
69 G4double Dispersion(const G4Material*, << 77
70 const G4DynamicParticle*, << 78 G4double Dispersion( const G4Material*,
71 const G4double, const G4 << 79 const G4DynamicParticle*,
72 const G4double) override << 80 G4double&,
>> 81 G4double&);
73 82
74 // Initialisation for a new particle type << 83 void InitialiseMe(const G4ParticleDefinition*);
75 void InitialiseMe(const G4ParticleDefinition <<
76 84
77 // Initialisation prestep 85 // Initialisation prestep
78 void SetParticleAndCharge(const G4ParticleDe << 86 inline void SetParticleAndCharge(const G4ParticleDefinition*, G4double q2);
79 G4double q2) override; << 87
>> 88 protected:
>> 89
>> 90 private:
80 91
81 // hide assignment operator 92 // hide assignment operator
82 G4UniversalFluctuation & operator= << 93 G4UniversalFluctuation & operator=(const G4UniversalFluctuation &right);
83 (const G4UniversalFluctuation &right) = dele << 94 G4UniversalFluctuation(const G4UniversalFluctuation&);
84 G4UniversalFluctuation(const G4UniversalFluc <<
85 95
86 protected: << 96 const G4ParticleDefinition* particle;
>> 97 const G4Material* lastMaterial;
87 98
88 virtual G4double SampleGlandz(CLHEP::HepRand << 99 G4double particleMass;
89 const G4Materi << 100 G4double chargeSquare;
90 101
91 inline void AddExcitation(CLHEP::HepRandomEn << 102 // data members to speed up the fluctuation calculation
92 const G4double ax, << 103 G4double ipotFluct;
93 G4double& eav, << 104 G4double electronDensity;
94 G4double& eloss, G << 105
95 << 106 G4double f1Fluct;
96 inline void SampleGauss(CLHEP::HepRandomEngi << 107 G4double f2Fluct;
97 const G4double eav, << 108 G4double e1Fluct;
98 G4double& eloss); << 109 G4double e2Fluct;
99 << 110 G4double e1LogFluct;
100 // particle properties << 111 G4double e2LogFluct;
101 G4double particleMass = 0.0; << 112 G4double ipotLogFluct;
102 G4double m_Inv_particleMass = DBL_MAX; << 113 G4double e0;
103 G4double m_massrate = DBL_MAX; << 114
104 G4double chargeSquare = 1.0; << 115 G4double facwidth;
105 << 116 G4double oldloss;
106 // material properties << 117 G4double samestep;
107 G4double ipotFluct = 0.0; << 118 G4double e1,e2;
108 G4double ipotLogFluct = 0.0; <<
109 G4double e0 = 0.0; <<
110 119
111 // model parameters << 120 G4double minNumberInteractionsBohr;
112 G4double minNumberInteractionsBohr = 10.0; << 121 G4double theBohrBeta2;
113 G4double minLoss; 122 G4double minLoss;
114 G4double nmaxCont = 8.0; << 123 G4double nmaxCont1;
115 G4double rate = 0.56; << 124 G4double nmaxCont2;
116 G4double fw = 4.0; << 125
117 G4double a0 = 42.0; <<
118 G4double w2 = 0.0; <<
119 G4double meanLoss = 0.0; <<
120 <<
121 const G4ParticleDefinition* particle = nullp <<
122 G4double* rndmarray = nullptr; <<
123 G4int sizearray = 30; <<
124 }; 126 };
125 127
126 //....oooOO0OOooo........oooOO0OOooo........oo << 128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
127 129
128 inline void 130 inline void
129 G4UniversalFluctuation::AddExcitation(CLHEP::H << 131 G4UniversalFluctuation::SetParticleAndCharge(const G4ParticleDefinition* part,
130 const G4 << 132 G4double q2)
131 G4double <<
132 G4double <<
133 { 133 {
134 if(ax > nmaxCont) { << 134 if(part != particle) {
135 eav += ax*ex; << 135 particle = part;
136 esig2 += ax*ex*ex; << 136 particleMass = part->GetPDGMass();
137 } else { <<
138 const G4int p = (G4int)G4Poisson(ax); <<
139 if(p > 0) { eloss += ((p + 1) - 2.*rndm->f <<
140 } 137 }
>> 138 chargeSquare = q2;
141 } 139 }
142 <<
143 //....oooOO0OOooo........oooOO0OOooo........oo <<
144 <<
145 inline void <<
146 G4UniversalFluctuation::SampleGauss(CLHEP::Hep <<
147 const G4do <<
148 G4double& <<
149 { <<
150 G4double x = eav; <<
151 const G4double sig = std::sqrt(esig2); <<
152 if(eav < 0.25*sig) { <<
153 x += (2.*rndm->flat() - 1.)*eav; <<
154 } else { <<
155 do { <<
156 x = G4RandGauss::shoot(rndm, eav, sig); <<
157 } while (x < 0.0 || x > 2*eav); <<
158 // Loop checking, 23-Feb-2016, Vladimir Iv <<
159 } <<
160 eloss += x; <<
161 } <<
162 140
163 //....oooOO0OOooo........oooOO0OOooo........oo 141 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
164 142
165 #endif 143 #endif
166 144
167 145