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25 //
26 //
27 //
28 //
29 //---------------------------------------------------------------
30 // GEANT 4 class header file
31 //
32 // GFlashSamplingShowerParameterisation
33 //
34 // Class description:
35 //
36 // GFlash concrete sampling shower parameterisation
37
38 // Author: Joanna Weng - 02.2004
39 //---------------------------------------------------------------
40 #ifndef GFlashSamplingShowerParameterisation_h
41 #define GFlashSamplingShowerParameterisation_h 1
42
43 #include "globals.hh"
44 #include "GFlashSamplingShowerTuning.hh"
45 #include "GVFlashShowerParameterisation.hh"
46
47 class G4Material;
48
49 class GFlashSamplingShowerParameterisation : public GVFlashShowerParameterisation
50 {
51 public:
52 GFlashSamplingShowerParameterisation(
53 G4Material* aMat1, G4Material* aMat2, G4double d1, G4double d2,
54 /// \param aMat1 passive material, \param dd1 - passive layer thickness
55 /// \param aMat2 active material, \param dd2 - acive layer thickness
56
57 GFlashSamplingShowerTuning* aPar = 0);
58 ~GFlashSamplingShowerParameterisation();
59
60 void ComputeRadialParameters(G4double y, G4double Tau);
61 void GenerateLongitudinalProfile(G4double Energy);
62 void ComputeZAX0EFFetc();
63
64 G4double IntegrateEneLongitudinal(G4double LongitudinalStep);
65 G4double IntegrateNspLongitudinal(G4double LongitudinalStep);
66 G4double ComputeTau(G4double LongitudinalPosition);
67 void SetMaterial(G4Material* mat1, G4Material* mat2);
68 G4double GeneratePhi();
69 G4double GenerateRadius(G4int ispot, G4double Energy, G4double LongitudinalPosition);
70 G4double GenerateExponential(G4double Energy);
71
72 inline G4double GetAveR99() { return (3.5 * Rmeff); }
73 inline G4double GetAveR90() { return (1.5 * Rmeff); } // ok
74 //
75 inline G4double GetAveTmx() { return (X0eff * std::exp(AveLogTmax)); }
76 inline G4double GetAveT99() { return (X0eff * AveLogTmax / (AveLogAlpha - 1.00)); }
77 inline G4double GetAveT90() { return (2.5 * X0eff * std::exp(AveLogTmax)); }
78 //
79 inline G4double GetNspot() { return NSpot; }
80 inline G4double GetX0() { return X0eff; }
81 inline G4double GetEc() { return Eceff; }
82 inline G4double GetRm() { return Rmeff; }
83 inline G4double GetEffDensity() { return Rhoeff; }
84
85 G4double ApplySampling(const G4double DEne, const G4double Energy);
86
87 private:
88 // medium related quantities
89 //
90 G4Material *material1, *material2;
91 G4double density1, A1, Z1, X01, Ec1, Rm1, d1;
92 G4double density2, A2, Z2, X02, Ec2, Rm2, d2;
93 G4double Aeff, Rhoeff{1.0}, X0eff{1.0}, Eceff{1.0}, Rmeff{1.0}, Fs, ehat, Zeff;
94
95 // Resolution
96 //
97 G4double ConstantResolution;
98 G4double NoiseResolution;
99 G4double SamplingResolution;
100
101 // parametrization parameters
102 //
103 GFlashSamplingShowerTuning* thePar;
104
105 // Cashed parameters:
106 // Longitudinal Coefficients for a homogenious calo
107 //
108 G4double ParAveT1, ParAveT2;
109 G4double ParAveA1, ParAveA2, ParAveA3;
110 G4double ParSigLogT1, ParSigLogT2;
111 G4double ParSigLogA1, ParSigLogA2;
112 G4double ParRho1, ParRho2;
113
114 // Cashed parameters:
115 // Longitudinal Coefficients for a sampling calo
116 //
117 G4double ParsAveT1, ParsAveT2;
118 G4double ParsAveA1, ParsAveA2;
119 G4double ParsSigLogT1, ParsSigLogT2;
120 G4double ParsSigLogA1, ParsSigLogA2;
121 G4double ParsRho1, ParsRho2;
122 void ComputeLongitudinalParameters(G4double y);
123 void GenerateEnergyProfile(G4double y);
124 void GenerateNSpotProfile(G4double y);
125
126 // Radial Coefficients homo
127 //
128 G4double ParRC1, ParRC2, ParRC3, ParRC4;
129 G4double ParWC1, ParWC2, ParWC3;
130 G4double ParWC4, ParWC5, ParWC6;
131 G4double ParRT1, ParRT2, ParRT3, ParRT4;
132 G4double ParRT5, ParRT6;
133
134 // Radial Coefficients sampling
135 //
136 G4double ParsRC1, ParsRC2;
137 G4double ParsWC1, ParsWC2;
138 G4double ParsRT1, ParsRT2;
139
140 // Spot multiplicity Coefficients
141 //
142 G4double ParsSpotT1, ParsSpotT2, ParsSpotA1, ParsSpotA2;
143 G4double ParsSpotN1, ParsSpotN2;
144
145 // PARAMETRISATION variables (Energy & position dependent)
146 // Longitudinal
147 // homogeneous
148 //
149 G4double AveLogAlphah, AveLogTmaxh;
150 G4double SigmaLogAlphah, SigmaLogTmaxh;
151 G4double Rhoh;
152 G4double Alphah, Tmaxh, Betah;
153
154 // PARAMETRISATION variables (Energy & position dependent)
155 // Longitudinal
156 // sampling
157 //
158 G4double AveLogAlpha, AveLogTmax;
159 G4double SigmaLogAlpha, SigmaLogTmax;
160 G4double Rho;
161 G4double Alpha, Tmax, Beta;
162
163 // Multiplicity
164 //
165 G4double NSpot, AlphaNSpot, TNSpot, BetaNSpot;
166
167 // Radial
168 //
169 G4double RadiusCore, WeightCore, RadiusTail;
170 };
171
172 #endif
173