| Geant4 Cross Reference |
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25 //
26 //
27 // The lust update: M.V. Kossov, CERN/ITEP(Mos
28 //
29 // *******************************************
30 // Short description: Cross-sections extracted
31 // Hyperon-nuclear interactions. Original aut
32 // -------------------------------------------
33 //
34
35 #include "G4ChipsHyperonInelasticXS.hh"
36 #include "G4SystemOfUnits.hh"
37 #include "G4DynamicParticle.hh"
38 #include "G4ParticleDefinition.hh"
39 #include "G4Lambda.hh"
40 #include "G4SigmaPlus.hh"
41 #include "G4SigmaMinus.hh"
42 #include "G4SigmaZero.hh"
43 #include "G4XiMinus.hh"
44 #include "G4XiZero.hh"
45 #include "G4OmegaMinus.hh"
46 #include "G4Log.hh"
47 #include "G4Exp.hh"
48
49 // factory
50 #include "G4CrossSectionFactory.hh"
51 //
52 G4_DECLARE_XS_FACTORY(G4ChipsHyperonInelasticX
53
54 G4ChipsHyperonInelasticXS::G4ChipsHyperonInela
55 {
56 // Initialization of the
57 lastLEN=0; // Pointer to the lastArray of Lo
58 lastHEN=0; // Pointer to the lastArray of Hi
59 lastN=0; // The last N of calculated nucle
60 lastZ=0; // The last Z of calculated nucle
61 lastP=0.; // Last used in cross section Mom
62 lastTH=0.; // Last threshold momentum
63 lastCS=0.; // Last value of the Cross Sectio
64 lastI=0; // The last position in the DAMDB
65 LEN = new std::vector<G4double*>;
66 HEN = new std::vector<G4double*>;
67 }
68
69 G4ChipsHyperonInelasticXS::~G4ChipsHyperonInel
70 {
71 std::size_t lens=LEN->size();
72 for(std::size_t i=0; i<lens; ++i) delete[]
73 delete LEN;
74
75 std::size_t hens=HEN->size();
76 for(std::size_t i=0; i<hens; ++i) delete[]
77 delete HEN;
78 }
79
80 void G4ChipsHyperonInelasticXS::CrossSectionDe
81 {
82 outFile << "G4ChipsHyperonInelasticXS provid
83 << "section for hyperon nucleus scat
84 << "momentum. The cross section is c
85 << "CHIPS parameterization of cross
86 }
87
88 G4bool G4ChipsHyperonInelasticXS::IsIsoApplica
89 const G4Element*,
90 const G4Material*)
91 {
92 return true;
93 }
94
95 // The main member function giving the collisi
96 // Make pMom in independent units ! (Now it is
97 G4double G4ChipsHyperonInelasticXS::GetIsoCros
98 const G4Isotope*,
99 const G4Element*,
100 const G4Material*)
101 {
102 G4double pMom=Pt->GetTotalMomentum();
103 G4int tgN = A - tgZ;
104 G4int pdg = Pt->GetDefinition()->GetPDGEncod
105
106 return GetChipsCrossSection(pMom, tgZ, tgN,
107 }
108
109 G4double G4ChipsHyperonInelasticXS::GetChipsCr
110 {
111
112 G4bool in=false; // By d
113 if(tgN!=lastN || tgZ!=lastZ) // The
114 {
115 in = false; // By d
116 lastP = 0.; // New
117 lastN = tgN; // The
118 lastZ = tgZ; // The
119 lastI = (G4int)colN.size(); // Size
120 j = 0; // A#0f
121
122 if(lastI) for(G4int i=0; i<lastI; ++i) //
123 {
124 if(colN[i]==tgN && colZ[i]==tgZ) // Try
125 {
126 lastI=i; // Reme
127 lastTH =colTH[i]; // The
128
129 if(pMom<=lastTH)
130 {
131 return 0.; // Ener
132 }
133 lastP =colP [i]; // Last
134 lastCS =colCS[i]; // Last
135 in = true; // This
136 // Momentum pMom is in IU ! @@ Units
137 lastCS=CalculateCrossSection(-1,j,PDG,
138
139 if(lastCS<=0. && pMom>lastTH) // Corr
140 {
141 lastCS=0.;
142 lastTH=pMom;
143 }
144 break; // Go o
145 }
146 j++; // Incr
147 }
148 if(!in) // This
149 {
150 //!!The slave functions must provide cro
151 lastCS=CalculateCrossSection(0,j,PDG,las
152
153 lastTH = 0; //ThresholdEnergy(tgZ, tgN);
154 colN.push_back(tgN);
155 colZ.push_back(tgZ);
156 colP.push_back(pMom);
157 colTH.push_back(lastTH);
158 colCS.push_back(lastCS);
159 //} // M.K. Presence of H1 with high thresho
160 return lastCS*millibarn;
161 } // End of creation of the new set of par
162 else
163 {
164 colP[lastI]=pMom;
165 colCS[lastI]=lastCS;
166 }
167 } // End of parameters udate
168 else if(pMom<=lastTH)
169 {
170 return 0.; // Mome
171 }
172 else // It i
173 {
174 lastCS=CalculateCrossSection(1,j,PDG,lastZ
175 lastP=pMom;
176 }
177 return lastCS*millibarn;
178 }
179
180 // The main member function giving the gamma-A
181 G4double G4ChipsHyperonInelasticXS::CalculateC
182 G4int, G4int targZ, G4int targ
183 {
184 static const G4double THmin=27.; // defa
185 static const G4double THmiG=THmin*.001; // m
186 static const G4double dP=10.; // step
187 static const G4double dPG=dP*.001; // step
188 static const G4int nL=105; // A#of
189 static const G4double Pmin=THmin+(nL-1)*dP;
190 static const G4double Pmax=227000.; // maxP
191 static const G4int nH=224; // A#of
192 static const G4double milP=G4Log(Pmin);// Lo
193 static const G4double malP=G4Log(Pmax);// Hi
194 static const G4double dlP=(malP-milP)/(nH-1)
195 static const G4double milPG=G4Log(.001*Pmin)
196
197 if(F<=0) // This
198 {
199 if(F<0) // This
200 {
201 G4int sync=(G4int)LEN->size();
202 if(sync<=I) G4cerr<<"*!*G4QPiMinusNuclCS
203 lastLEN=(*LEN)[I]; // Poin
204 lastHEN=(*HEN)[I]; // Poin
205 }
206 else // This
207 {
208 lastLEN = new G4double[nL]; // Allo
209 lastHEN = new G4double[nH]; // Allo
210 // --- Instead of making a separate func
211 G4double P=THmiG; // Tabl
212 for(G4int k=0; k<nL; k++)
213 {
214 lastLEN[k] = CrossSectionLin(targZ, ta
215 P+=dPG;
216 }
217 G4double lP=milPG;
218 for(G4int n=0; n<nH; n++)
219 {
220 lastHEN[n] = CrossSectionLog(targZ, ta
221 lP+=dlP;
222 }
223 // --- End of possible separate function
224 // *** The synchronization check ***
225 G4int sync=(G4int)LEN->size();
226 if(sync!=I)
227 {
228 G4cerr<<"***G4QHyperNuclCS::CalcCrossS
229 <<", N="<<targN<<", F="<<F<<G4en
230 //G4Exception("G4PiMinusNuclearCS::Cal
231 }
232 LEN->push_back(lastLEN); // reme
233 HEN->push_back(lastHEN); // reme
234 } // End of creation of the new set of par
235 } // End of parameters udate
236 // =--------------------------= NOW the Magi
237 G4double sigma;
238 if (Momentum<lastTH) return 0.; // It m
239 else if (Momentum<Pmin) // High
240 {
241 sigma=EquLinearFit(Momentum,nL,THmin,dP,la
242 }
243 else if (Momentum<Pmax) // High
244 {
245 G4double lP=G4Log(Momentum);
246 sigma=EquLinearFit(lP,nH,milP,dlP,lastHEN)
247 }
248 else // UHE
249 {
250 G4double P=0.001*Momentum; // Appr
251 sigma=CrossSectionFormula(targZ, targN, P,
252 }
253 if (sigma<0.) return 0.;
254 return sigma;
255 }
256
257 // Calculation formula for piMinus-nuclear ine
258 G4double G4ChipsHyperonInelasticXS::CrossSecti
259 {
260 G4double lP=G4Log(P);
261 return CrossSectionFormula(tZ, tN, P, lP);
262 }
263
264 // Calculation formula for piMinus-nuclear ine
265 G4double G4ChipsHyperonInelasticXS::CrossSecti
266 {
267 G4double P=G4Exp(lP);
268 return CrossSectionFormula(tZ, tN, P, lP);
269 }
270 // Calculation formula for piMinus-nuclear ine
271 G4double G4ChipsHyperonInelasticXS::CrossSecti
272
273 {
274 G4double sigma=0.;
275
276 //AR-24Apr2018 Switch to allow transuranic e
277 const G4bool isHeavyElementAllowed = true;
278
279 if(tZ==1 && !tN) // H
280 {
281 G4double ld=lP-3.5;
282 G4double ld2=ld*ld;
283 G4double p2=P*P;
284 G4double p4=p2*p2;
285 G4double sp=std::sqrt(P);
286 G4double El=(.0557*ld2+6.72+99./p2)/(1.+2.
287 G4double To=(.3*ld2+38.2+900./sp)/(1.+27./
288 sigma=To-El;
289 }
290 else if((tZ<97 && tN<152) || isHeavyElementA
291 {
292 G4double d=lP-4.2;
293 G4double p2=P*P;
294 G4double p4=p2*p2;
295 G4double sp=std::sqrt(P);
296 G4double ssp=std::sqrt(sp);
297 G4double a=tN+tZ; //
298 G4double al=G4Log(a);
299 G4double sa=std::sqrt(a);
300 G4double a2=a*a;
301 G4double a2s=a2*sa;
302 G4double a4=a2*a2;
303 G4double a8=a4*a4;
304 G4double c=(170.+3600./a2s)/(1.+65./a2s);
305 G4double gg=42.*(G4Exp(al*0.8)+4.E-8*a4)/(
306 G4double e=390.; //
307 G4double r=0.27;
308 G4double h=2.E-7;
309 G4double t=0.3;
310 if(tZ>1 || tN>1)
311 {
312 e=380.+18.*a2/(1.+a2/60.)/(1.+2.E-19*a8)
313 r=0.15;
314 h=1.E-8*a2/(1.+a2/17.)/(1.+3.E-20*a8);
315 t=(.2+.00056*a2)/(1.+a2*.0006);
316 }
317 sigma=(c+d*d)/(1.+t/ssp+r/p4)+(gg+e*G4Exp(
318 #ifdef pdebug
319 G4cout<<"G4QHyperonNucCS::CSForm: A="<<a<<
320 <<",d="<<d<<",r="<<r<<",e="<<e<<",h=
321 #endif
322 }
323 else
324 {
325 G4cerr<<"-Warning-G4QHyperonNuclearCroSect
326 sigma=0.;
327 }
328 if(sigma<0.) return 0.;
329 return sigma;
330 }
331
332 G4double G4ChipsHyperonInelasticXS::EquLinearF
333 {
334 if(DX<=0. || N<2)
335 {
336 G4cerr<<"***G4ChipsHyperonInelasticXS::E
337 return Y[0];
338 }
339
340 G4int N2=N-2;
341 G4double d=(X-X0)/DX;
342 G4int jj=static_cast<int>(d);
343 if (jj<0) jj=0;
344 else if(jj>N2) jj=N2;
345 d-=jj; // excess
346 G4double yi=Y[jj];
347 G4double sigma=yi+(Y[jj+1]-yi)*d;
348
349 return sigma;
350 }
351