source: trunk/source/processes/hadronic/models/coherent_elastic/include/G4ElasticHadrNucleusHE.hh@ 1199

Last change on this file since 1199 was 1196, checked in by garnier, 16 years ago

update CVS release candidate geant4.9.3.01
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26//
27// $Id: G4ElasticHadrNucleusHE.hh,v 1.47 2009/09/22 16:21:46 vnivanch Exp $
28// GEANT4 tag $Name: geant4-09-03-cand-01 $
29//
30// G4ElasticHadrNucleusHe.hh
31
32// The generator of high energy hadron-nucleus elastic scattering
33// The hadron kinetic energy T > 1 GeV
34// N. Starkov 2003.
35//
36// 19.05.04 Variant for G4 6.1: The 'ApplyYourself' was changed
37// 19.11.05 The HE elastic scattering on proton is added (N.Starkov)
38// 16.11.06 General redesign (N.Starkov)
39// 23.11.06 General cleanup, ONQ0=3 (V.Ivanchenko)
40// 15.05.07 Redesign and cleanup (V.Ivanchenko)
41// 18.05.07 Cleanup (V.Grichine)
42//
43
44#ifndef G4ElasticHadrNucleusHE_h
45#define G4ElasticHadrNucleusHE_h 1
46
47#include <vector>
48
49#include "globals.hh"
50#include "G4ParticleDefinition.hh"
51#include "G4ParticleChange.hh"
52#include "G4Nucleus.hh"
53#include "G4VHadronElastic.hh"
54
55class G4NistManager;
56
57static const G4int NHADRONS = 26; // Number of hadrons for which model is applied
58static const G4int ONQ0 = 5; // The initial number of steps on Q2
59static const G4int ONQ2 = 100; // The total number of steps on Q2
60static const G4int NENERGY = 30;
61static const G4int NQTABLE = NENERGY*ONQ2;
62
63
64///////////////////////////////////////////////////////////////////////
65//
66//
67
68class G4ElasticData
69{
70public:
71
72 G4ElasticData(const G4ParticleDefinition* h,
73 G4int Z, G4double A, G4double* eGeV);
74
75 ~G4ElasticData(){}
76
77 const G4ParticleDefinition* Hadron() {return hadr;}
78
79private:
80 void DefineNucleusParameters(G4double A);
81 const G4ParticleDefinition* hadr;
82
83 // hide assignment operator
84 G4ElasticData & operator=(const G4ElasticData &right);
85 G4ElasticData(const G4ElasticData&);
86
87public:
88 G4int AtomicWeight;
89 G4double R1, R2, Pnucl, Aeff;
90 G4double limitQ2;
91 G4double massGeV;
92 G4double mass2GeV2;
93 G4double massA;
94 G4double massA2;
95 G4int dnkE[NENERGY];
96 G4double maxQ2[NENERGY];
97 G4double CrossSecMaxQ2[NENERGY];
98
99 G4double TableQ2[ONQ2];
100 G4double TableCrossSec[NQTABLE];
101};
102
103/////////////////////////////////////////////////////////////////////
104//
105//
106
107class G4ElasticHadrNucleusHE : public G4VHadronElastic
108{
109public:
110
111 G4ElasticHadrNucleusHE();
112
113 virtual ~G4ElasticHadrNucleusHE();
114
115 virtual G4double SampleInvariantT(const G4ParticleDefinition* p,
116 G4double plab,
117 G4int Z, G4int A);
118
119 G4double SampleT(const G4ParticleDefinition* p,
120 G4double plab,
121 G4int Z, G4int A);
122
123 G4double HadronNucleusQ2_2(G4ElasticData * pElD, G4int Z,
124 G4double plabGeV, G4double tmax);
125
126 void DefineHadronValues(G4int Z);
127
128 G4double GetLightFq2(G4int Z, G4int A, G4double Q);
129 G4double GetHeavyFq2(G4int Nucleus, G4double *LineFq2);
130
131 G4double GetQ2_2(G4int N, G4double * Q,
132 G4double * F, G4double R);
133
134 G4double LineInterpol(G4double p0, G4double p2,
135 G4double c1, G4double c2,
136 G4double p);
137
138 G4double HadrNucDifferCrSec(G4int Nucleus, G4double Q2);
139
140 void InterpolateHN(G4int n, const G4double EnP[],
141 const G4double C0P[], const G4double C1P[],
142 const G4double B0P[], const G4double B1P[]);
143
144 // hide assignment operator
145 G4ElasticHadrNucleusHE & operator=(const G4ElasticHadrNucleusHE &right);
146 G4ElasticHadrNucleusHE(const G4ElasticHadrNucleusHE&);
147
148 G4double GetBinomCof( G4int n, G4int m );
149
150 G4double GetFt(G4double Q2);
151
152 G4double GetDistrFun(G4double Q2);
153
154 G4double GetQ2(G4double Ran);
155
156 G4double HadronProtonQ2(const G4ParticleDefinition * aHadron,
157 G4double inLabMom);
158
159 void GetKinematics(const G4ParticleDefinition * aHadron,
160 G4double MomentumH);
161private:
162
163 void Binom();
164
165 // fields
166
167 G4int iHadrCode;
168 G4int iHadron;
169 G4int HadronCode[NHADRONS];
170 G4int HadronType[NHADRONS];
171 G4int HadronType1[NHADRONS];
172
173 // protection energy and momemtum
174
175 G4double lowestEnergyLimit;
176 G4double plabLowLimit;
177 G4double dQ2;
178
179 // transition between internal and CLHEP units
180
181 G4double MbToGeV2;
182 G4double sqMbToGeV;
183 G4double Fm2ToGeV2;
184 G4double GeV2;
185 G4double protonM; // GeV
186 G4double protonM2; // GeV^2
187
188 // projectile kinematics in GeV
189
190 G4double hMass;
191 G4double hMass2;
192 G4double hLabMomentum;
193 G4double hLabMomentum2;
194 G4double MomentumCM;
195 G4double HadrEnergy;
196
197 // nucleaus parameters
198
199 G4double R1, R2, Pnucl, Aeff;
200 G4int NumbN;
201
202 // elastic parameters
203
204 G4double HadrTot, HadrSlope, HadrReIm, TotP,
205 DDSect2, DDSect3, ConstU, FmaxT;
206
207 // momentum limits for different models of hadron/nucleon scatetring
208 G4double BoundaryP[7], BoundaryTL[7], BoundaryTG[7];
209
210 // parameterisation of scattering
211
212 G4double Slope1, Slope2, Coeff1, Coeff2, MaxTR;
213 G4double Slope0, Coeff0;
214
215 G4double aAIm, aDIm, Dtot11;
216
217 G4double Energy[NENERGY];
218 G4double LowEdgeEnergy[NENERGY];
219
220 G4double SetBinom[240][240];
221
222 G4ElasticData* SetOfElasticData[NHADRONS][93];
223 G4NistManager* nistManager;
224
225}; // The end of the class description
226
227////////////////////////////////////////////////////////////////
228
229inline
230G4double G4ElasticHadrNucleusHE::LineInterpol(G4double p1, G4double p2,
231 G4double c1, G4double c2,
232 G4double p)
233{
234// G4cout<<" LineInterpol: p1 p2 c1 c2 "<<p1<<" "<<p2<<" "
235// <<c1<<" "<<c2<<" c "<<c1+(p-p1)*(c2-c1)/(p2-p1)<<G4endl;
236
237
238 return c1+(p-p1)*(c2-c1)/(p2-p1);
239}
240
241////////////////////////////////////////////////////////////////
242
243inline
244void G4ElasticHadrNucleusHE::InterpolateHN(G4int n, const G4double EnP[],
245 const G4double C0P[], const G4double C1P[],
246 const G4double B0P[], const G4double B1P[])
247{
248 G4int i;
249
250 for(i=1; i<n; i++) if(hLabMomentum <= EnP[i]) break;
251
252 if(i == n) i = n - 1;
253
254 Coeff0 = LineInterpol(EnP[i], EnP[i-1], C0P[i], C0P[i-1], hLabMomentum);
255 Coeff1 = LineInterpol(EnP[i], EnP[i-1], C1P[i], C1P[i-1], hLabMomentum);
256 Slope0 = LineInterpol(EnP[i], EnP[i-1], B0P[i], B0P[i-1], hLabMomentum);
257 Slope1 = LineInterpol(EnP[i], EnP[i-1], B1P[i], B1P[i-1], hLabMomentum);
258
259// G4cout<<" InterpolHN: n i "<<n<<" "<<i<<" Mom "
260// <<hLabMomentum<<G4endl;
261}
262
263////////////////////////////////////////////////////////////////
264
265inline
266G4double G4ElasticHadrNucleusHE::GetBinomCof( G4int n, G4int m )
267{
268 if ( n >= m && n <= 240) return SetBinom[n][m];
269 else return 0.;
270}
271
272////////////////////////////////////////////////////////////////
273
274inline
275G4double G4ElasticHadrNucleusHE::GetDistrFun(G4double Q2)
276{
277 return GetFt(Q2)/FmaxT;
278}
279
280#endif
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