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25 // 25 //
>> 26 // $Id: G4GoudsmitSaundersonTable.hh 67990 2013-03-13 10:56:28Z gcosmo $
26 // 27 //
27 // ------------------------------------------- << 28 // -------------------------------------------------------------------
28 // 29 //
29 // GEANT4 Class header file 30 // GEANT4 Class header file
30 // 31 //
31 // File name: G4GoudsmitSaundersonTable 32 // File name: G4GoudsmitSaundersonTable
32 // 33 //
33 // Author: Mihaly Novak / (Omrane Kadri << 34 // Author: Omrane Kadri
34 // 35 //
35 // Creation date: 20.02.2009 36 // Creation date: 20.02.2009
36 // 37 //
37 // Class description: <<
38 // Class to handle multiple scattering angul <<
39 // using Kawrakow-Bielajew Goudsmit-Saunders <<
40 // Rutherford DCS for elastic scattering of <<
41 // class is used by G4GoudsmitSaundersonMscM <<
42 // deflection of electrons/positrons after t <<
43 // <<
44 // Modifications: 38 // Modifications:
45 // 04.03.2009 V.Ivanchenko cleanup and format 39 // 04.03.2009 V.Ivanchenko cleanup and format according to Geant4 EM style
46 // 18.05.2015 M. Novak This class has been com <<
47 // class name was kept; class descr <<
48 // A new version of Kawrakow-Bielaj <<
49 // based on the screened Rutherford <<
50 // electrons/positrons has been int <<
51 // angular distributions over a 2D <<
52 // and the CDFs are now stored in a <<
53 // together with the corresponding <<
54 // The new version is several times <<
55 // compared to the earlier version <<
56 // that use these data has been als <<
57 // 28.04.2017 M. Novak: the GS angular distrib <<
58 // data size has been reduced from <<
59 // representation, the class has be <<
60 // this new data representation. <<
61 // 23.08.2017 M. Novak: Added funtionality to <<
62 // base GS angular distributions an <<
63 // parameter, first and second mome <<
64 // activated in the GS-MSC model. <<
65 // <<
66 // References: <<
67 // [1] A.F.Bielajew, NIMB, 111 (1996) 195-20 <<
68 // [2] I.Kawrakow, A.F.Bielajew, NIMB 134(19 <<
69 // 40 //
70 // ------------------------------------------- << 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71 <<
72 42
73 #ifndef G4GoudsmitSaundersonTable_h 43 #ifndef G4GoudsmitSaundersonTable_h
74 #define G4GoudsmitSaundersonTable_h 1 44 #define G4GoudsmitSaundersonTable_h 1
75 45
76 #include <vector> << 46 #include "globals.hh"
77 47
78 #include "G4Types.hh" << 48 class G4GoudsmitSaundersonTable
>> 49 {
>> 50 public:
79 51
80 class G4GSMottCorrection; << 52 G4GoudsmitSaundersonTable();
81 class G4MaterialCutsCouple; <<
82 53
83 class G4GoudsmitSaundersonTable { << 54 ~G4GoudsmitSaundersonTable();
84 55
85 public: << 56 G4double SampleTheta(G4double , G4double ,G4double);
86 G4GoudsmitSaundersonTable(G4bool iselectron) <<
87 ~G4GoudsmitSaundersonTable(); <<
88 57
89 void Initialise(G4double lownergylimit, G4do << 58 private:
>> 59
>> 60 // hide assignment operator
>> 61 G4GoudsmitSaundersonTable & operator=(const G4GoudsmitSaundersonTable &right);
>> 62 G4GoudsmitSaundersonTable(const G4GoudsmitSaundersonTable&);
>> 63
>> 64 void LoadPDFandCPDFdata();
>> 65
>> 66 static G4double* PDF;
>> 67 static G4double* CPDF;
90 68
91 // structure to store one GS transformed ang <<
92 struct GSMSCAngularDtr { <<
93 G4int fNumData; // # of data points <<
94 G4double *fUValues; // array of transfo <<
95 G4double *fParamA; // array of interpo <<
96 G4double *fParamB; // array of interpo <<
97 }; <<
98 <<
99 void LoadMSCData(); <<
100 <<
101 G4bool Sampling(G4double lambdaval, G4doub <<
102 G4double &cost, G4doub <<
103 G4double beta2, G4int <<
104 G4int &mcekini, G4int &mcd <<
105 G4bool isfirst); <<
106 <<
107 G4double SampleCosTheta(G4double lambdaval, <<
108 G4double lekin, <<
109 GSMSCAngularDtr **gs <<
110 G4double &transfPar, <<
111 <<
112 G4double SampleGSSRCosTheta(const GSMSCAngul <<
113 <<
114 G4double SingleScattering(G4double lambdaval <<
115 G4double beta2, G4 <<
116 <<
117 GSMSCAngularDtr* GetGSAngularDtr(G4double sc <<
118 G4double &q <<
119 <<
120 // material dependent MSC parameters (comput <<
121 // Moliere's screening parameter <<
122 G4double GetMoliereBc(G4int matindx) { retu <<
123 <<
124 G4double GetMoliereXc2(G4int matindx) { retu <<
125 <<
126 void GetMottCorrectionFactors(G4double l <<
127 G4int mati <<
128 G4double & <<
129 <<
130 // set option to activate/inactivate Mott-co <<
131 void SetOptionMottCorrection(G4bool val) <<
132 // set option to activate/inactivate PWA-cor <<
133 void SetOptionPWACorrection(G4bool val) <<
134 <<
135 // this method returns with the scattering p <<
136 // interpolated from tables prepared at init <<
137 G4double ComputeScatteringPowerCorrection(co <<
138 <<
139 void InitSCPCorrection(); <<
140 <<
141 private: <<
142 // initialisation of material dependent Moli <<
143 void InitMoliereMSCParams(); <<
144 <<
145 <<
146 private: <<
147 static G4bool gIsInitialised; <<
148 static constexpr G4int gLAMBNUM = 64; <<
149 static constexpr G4int gQNUM1 = 15; <<
150 static constexpr G4int gQNUM2 = 32; <<
151 static constexpr G4int gNUMSCR1 = 201; <<
152 static constexpr G4int gNUMSCR2 = 51; <<
153 static constexpr G4double gLAMBMIN = 1.0; <<
154 static constexpr G4double gLAMBMAX = 100000 <<
155 static constexpr G4double gQMIN1 = 0.001; <<
156 static constexpr G4double gQMAX1 = 0.99; <<
157 static constexpr G4double gQMIN2 = 0.99; <<
158 static constexpr G4double gQMAX2 = 7.99; <<
159 // <<
160 G4bool fIsElectron; // GS-table <<
161 G4bool fIsMottCorrection; // flag to i <<
162 G4bool fIsPWACorrection; // flag to i <<
163 G4double fLogLambda0; // ln(gLAMBM <<
164 G4double fLogDeltaLambda; // ln(gLAMBM <<
165 G4double fInvLogDeltaLambda; // 1/[ln(gLA <<
166 G4double fInvDeltaQ1; // 1/[(gQMAX <<
167 G4double fDeltaQ2; // [(gQMAX2- <<
168 G4double fInvDeltaQ2; // 1/[(gQMAX <<
169 // <<
170 G4double fLowEnergyLimit; <<
171 G4double fHighEnergyLimit; <<
172 // <<
173 int fNumSPCEbinPerDec; // scatterin <<
174 struct SCPCorrection { <<
175 bool fIsUse; // <<
176 double fPrCut; // sec. e- p <<
177 double fLEmin; // log min e <<
178 double fILDel; // inverse l <<
179 //std::vector<double> fVEkin; // scatter <<
180 std::vector<double> fVSCPC; // scatterin <<
181 }; <<
182 std::vector<SCPCorrection*> fSCPCPerMatCut <<
183 <<
184 <<
185 // vector to store all GS transformed angul <<
186 static std::vector<GSMSCAngularDtr*> gGSMSC <<
187 static std::vector<GSMSCAngularDtr*> gGSMSC <<
188 <<
189 //@{ <<
190 /** Precomputed \f$ b_lambda_{c} $\f and \f <<
191 * Moliere parameters that can be used to <<
192 * the elastic scattering cross section (o <<
193 * screened Rutherford cross section appro <<
194 * G4GoudsmitSaundersonMscModel if fgIsUse <<
195 */ <<
196 static std::vector<double> gMoliereBc; <<
197 static std::vector<double> gMoliereXc2; <<
198 // <<
199 // <<
200 G4GSMottCorrection *fMottCorrection; <<
201 }; 69 };
202 70
>> 71 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
203 #endif 72 #endif
>> 73
204 74