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26 //
27 // The lust update: M.V. Kossov, CERN/ITEP(Mos
28 //
29 //
30 // G4 Physics class: G4QKaonPlusNuclearCrossSe
31 // Created: M.V. Kossov, CERN/ITEP(Moscow), 20
32 // The last update: M.V. Kossov, CERN/ITEP (Mo
33 //
34 // -------------------------------------------
35 // Short description: Cross-sections extracted
36 // kaon(minus)-nuclear interactions. Author: M
37 // -------------------------------------------
38 //
39
40 #include "G4ChipsKaonPlusInelasticXS.hh"
41 #include "G4SystemOfUnits.hh"
42 #include "G4DynamicParticle.hh"
43 #include "G4ParticleDefinition.hh"
44 #include "G4KaonPlus.hh"
45 #include "G4Proton.hh"
46 #include "G4PionPlus.hh"
47 #include "G4AutoLock.hh"
48
49 // factory
50 #include "G4CrossSectionFactory.hh"
51 //
52 G4_DECLARE_XS_FACTORY(G4ChipsKaonPlusInelastic
53
54 namespace {
55 const G4double THmin=27.; // default m
56 const G4double THmiG=THmin*.001; // minimu
57 const G4double dP=10.; // step for
58 const G4double dPG=dP*.001; // step for
59 const G4int nL=105; // A#of LEN
60 const G4double Pmin=THmin+(nL-1)*dP; // mi
61 const G4double Pmax=227000.; // maxP for
62 const G4int nH=224; // A#of HEN
63 const G4double milP=std::log(Pmin);// Low
64 const G4double malP=std::log(Pmax);// High
65 const G4double dlP=(malP-milP)/(nH-1); //
66 const G4double milPG=std::log(.001*Pmin);/
67 const G4double third=1./3.;
68 G4Mutex initM = G4MUTEX_INITIALIZER;
69 G4double prM;// = G4Proton::Proton()->GetP
70 G4double piM;// = G4PionPlus::PionPlus()->
71 G4double pM;// = G4KaonPlus::KaonPlus()->
72 G4double tpM;//= pM+pM; // Doubled proje
73 }
74
75 G4ChipsKaonPlusInelasticXS::G4ChipsKaonPlusIne
76 {
77 G4AutoLock l(&initM);
78 prM = G4Proton::Proton()->GetPDGMass(); // P
79 piM = G4PionPlus::PionPlus()->GetPDGMass()+.
80 pM = G4KaonPlus::KaonPlus()->GetPDGMass();
81 tpM = pM+pM; // Doubled projectile mass (M
82 l.unlock();
83 // Initialization of the
84 lastLEN=0; // Pointer to the lastArray of Lo
85 lastHEN=0; // Pointer to the lastArray of Hi
86 lastN=0; // The last N of calculated nucle
87 lastZ=0; // The last Z of calculated nucle
88 lastP=0.; // Last used in cross section Mom
89 lastTH=0.; // Last threshold momentum
90 lastCS=0.; // Last value of the Cross Sectio
91 lastI=0; // The last position in the DAMDB
92 LEN = new std::vector<G4double*>;
93 HEN = new std::vector<G4double*>;
94 }
95
96 G4ChipsKaonPlusInelasticXS::~G4ChipsKaonPlusIn
97 {
98 std::size_t lens=LEN->size();
99 for(std::size_t i=0; i<lens; ++i) delete[] (
100 delete LEN;
101
102 std::size_t hens=HEN->size();
103 for(std::size_t i=0; i<hens; ++i) delete[] (
104 delete HEN;
105 }
106
107 void
108 G4ChipsKaonPlusInelasticXS::CrossSectionDescri
109 {
110 outFile << "G4ChipsKaonPlusInelasticXS pro
111 << "section for K+ nucleus scatter
112 << "momentum. The cross section is
113 << "CHIPS parameterization of cros
114 }
115
116 G4bool G4ChipsKaonPlusInelasticXS::IsIsoApplic
117 const G4Element*,
118 const G4Material*)
119 {
120 return true;
121 }
122
123
124 // The main member function giving the collisi
125 // Make pMom in independent units ! (Now it is
126 G4double G4ChipsKaonPlusInelasticXS::GetIsoCro
127 const G4Isotope*,
128 const G4Element*,
129 const G4Material*)
130 {
131 G4double pMom=Pt->GetTotalMomentum();
132 G4int tgN = A - tgZ;
133
134 return GetChipsCrossSection(pMom, tgZ, tgN,
135 }
136
137 G4double G4ChipsKaonPlusInelasticXS::GetChipsC
138 {
139
140 G4bool in=false; // By d
141 if(tgN!=lastN || tgZ!=lastZ) // The
142 {
143 in = false; // By d
144 lastP = 0.; // New
145 lastN = tgN; // The
146 lastZ = tgZ; // The
147 lastI = (G4int)colN.size(); // Size
148 j = 0; // A#0f
149
150 if(lastI) for(G4int i=0; i<lastI; ++i) //
151 {
152 if(colN[i]==tgN && colZ[i]==tgZ) // Try
153 {
154 lastI=i; // Reme
155 lastTH =colTH[i]; // The
156
157 if(pMom<=lastTH)
158 {
159 return 0.; // Ener
160 }
161 lastP =colP [i]; // Last
162 lastCS =colCS[i]; // Last
163 in = true; // This
164 // Momentum pMom is in IU ! @@ Units
165 lastCS=CalculateCrossSection(-1,j,321,
166
167 if(lastCS<=0. && pMom>lastTH) // Corr
168 {
169 lastCS=0.;
170 lastTH=pMom;
171 }
172 break; // Go o
173 }
174 j++; // Incr
175 }
176 if(!in) // This
177 {
178 //!!The slave functions must provide cro
179 lastCS=CalculateCrossSection(0,j,321,las
180
181 //if(lastCS>0.) // It
182 //{
183
184 lastTH = 0; //ThresholdEnergy(tgZ, tgN);
185 colN.push_back(tgN);
186 colZ.push_back(tgZ);
187 colP.push_back(pMom);
188 colTH.push_back(lastTH);
189 colCS.push_back(lastCS);
190 //} // M.K. Presence of H1 with high thr
191 return lastCS*millibarn;
192 } // End of creation of the new set of par
193 else
194 {
195 colP[lastI]=pMom;
196 colCS[lastI]=lastCS;
197 }
198 } // End of parameters udate
199 else if(pMom<=lastTH)
200 {
201 return 0.; // Mome
202 }
203 else // It i
204 {
205 lastCS=CalculateCrossSection(1,j,321,lastZ
206 lastP=pMom;
207 }
208 return lastCS*millibarn;
209 }
210
211 // The main member function giving the gamma-A
212 G4double G4ChipsKaonPlusInelasticXS::Calculate
213 G4int,
214 {
215 G4double A=targN+targZ; // A of
216
217 if(F<=0) // This
218 {
219 if(F<0) // This
220 {
221 G4int sync=(G4int)LEN->size();
222 if(sync<=I) G4cerr<<"*!*G4ChipsKPlusNucl
223 lastLEN=(*LEN)[I]; // Poin
224 lastHEN=(*HEN)[I]; // Poin
225 }
226 else // This
227 {
228 lastLEN = new G4double[nL]; // Allo
229 lastHEN = new G4double[nH]; // Allo
230 // --- Instead of making a separate func
231 G4double P=THmiG; // Tabl
232 for(G4int k=0; k<nL; k++)
233 {
234 lastLEN[k] = CrossSectionLin(targZ, ta
235 P+=dPG;
236 }
237 G4double lP=milPG;
238 for(G4int n=0; n<nH; n++)
239 {
240 lastHEN[n] = CrossSectionLog(targZ, ta
241 lP+=dlP;
242 }
243 // --- End of possible separate function
244 // *** The synchronization check ***
245 G4int sync=(G4int)LEN->size();
246 if(sync!=I)
247 {
248 G4cerr<<"***G4ChipsKPlusNuclCS::CalcCr
249 <<", N="<<targN<<", F="<<F<<G4en
250 //G4Exception("G4PiMinusNuclearCS::Cal
251 }
252 LEN->push_back(lastLEN); // reme
253 HEN->push_back(lastHEN); // reme
254 } // End of creation of the new set of par
255 } // End of parameters udate
256 // =--------------------------= NOW the Magi
257
258 G4double sigma;
259 if (Momentum<lastTH) return 0.; // It m
260 else if (Momentum<Pmin) // Low
261 {
262 if(A<=1. && Momentum < 600.) sigma=0.; //
263 else sigma=EquLinearFit(Momentum,nL,THmin,
264 }
265 else if (Momentum<Pmax) // High
266 {
267 G4double lP=std::log(Momentum);
268 sigma=EquLinearFit(lP,nH,milP,dlP,lastHEN)
269 }
270 else // UHE
271 {
272 G4double P=0.001*Momentum; // Appr
273 sigma=CrossSectionFormula(targZ, targN, P,
274 }
275 if(sigma<0.) return 0.;
276 return sigma;
277 }
278
279 // Electromagnetic momentum-threshold (in MeV/
280 G4double G4ChipsKaonPlusInelasticXS::Threshold
281 {
282 G4double tA=tZ+tN;
283 if(tZ<.99 || tN<0.) return 0.;
284 G4double tM=931.5*tA;
285 G4double dE=piM; // At le
286 if(tZ==1 && tN==0) tM=prM; // A thr
287 else dE=tZ/(1.+std::pow(tA,third)); // Safet
288 //G4double dE=1.263*tZ/(1.+std::pow(tA,third
289 G4double T=dE+dE*(dE/2+pM)/tM;
290 return std::sqrt(T*(tpM+T));
291 }
292
293 // Calculation formula for piMinus-nuclear ine
294 G4double G4ChipsKaonPlusInelasticXS::CrossSect
295 {
296 G4double lP=std::log(P);
297 return CrossSectionFormula(tZ, tN, P, lP);
298 }
299
300 // Calculation formula for piMinus-nuclear ine
301 G4double G4ChipsKaonPlusInelasticXS::CrossSect
302 {
303 G4double P=std::exp(lP);
304 return CrossSectionFormula(tZ, tN, P, lP);
305 }
306 // Calculation formula for piMinus-nuclear ine
307 G4double G4ChipsKaonPlusInelasticXS::CrossSect
308
309 {
310 G4double sigma=0.;
311 if(tZ==1 && !tN) // K
312 {
313 G4double ld=lP-3.5;
314 G4double ld2=ld*ld;
315 G4double sp=std::sqrt(P);
316 G4double p2=P*P;
317 G4double p4=p2*p2;
318 G4double lm=P-1.;
319 G4double md=lm*lm+.372;
320 G4double El=(.0557*ld2+2.23)/(1.-.7/sp+.1/
321 G4double To=(.3*ld2+19.5)/(1.+.46/sp+1.6/p
322 sigma=(To-El)+.6/md;
323 }
324 else if(tZ<97 && tN<152) // G
325 {
326 G4double p2=P*P;
327 G4double p4=p2*p2;
328 G4double a=tN+tZ; //
329 G4double al=std::log(a);
330 G4double sa=std::sqrt(a);
331 G4double asa=a*sa;
332 G4double a2=a*a;
333 G4double a3=a2*a;
334 G4double a4=a2*a2;
335 G4double a8=a4*a4;
336 G4double a12=a8*a4;
337 G4double f=.6; // De
338 G4double r=.5;
339 G4double gg=3.7;
340 G4double c=36.;
341 G4double ss=3.5;
342 G4double t=3.;
343 G4double u=.44;
344 G4double v=5.E-9;
345 if(tZ>1 && tN>1) // Mo
346 {
347 f=1.;
348 r=1./(1.+.007*a2);
349 gg=4.2;
350 c=52.*std::exp(al*.6)*(1.+95./a2)/(1.+9.
351 ss=(40.+.14*a)/(1.+12./a);
352 G4double y=std::exp(al*1.7);
353 t=.185*y/(1.+.00012*y);
354 u=(1.+80./asa)/(1.+200./asa);
355 v=(1.+3.E-6*a4*(1.+6.E-7*a3+4.E10/a12))/
356 }
357 G4double d=lP-gg;
358 G4double w=P-1.;
359 G4double rD=ss/(w*w+.36);
360 G4double h=P-.44;
361 G4double rR=t/(h*h+u*u);
362 sigma=(f*d*d+c)/(1.+r/std::sqrt(P)+1./p4)+
363 }
364 else
365 {
366 G4cerr<<"-Warning-G4ChipsKaonPlusNuclearCr
367 sigma=0.;
368 }
369 if(sigma<0.) return 0.;
370 return sigma;
371 }
372
373 G4double G4ChipsKaonPlusInelasticXS::EquLinear
374 {
375 if(DX<=0. || N<2)
376 {
377 G4cerr<<"***G4ChipsKaonPlusInelasticXS::
378 return Y[0];
379 }
380
381 G4int N2=N-2;
382 G4double d=(X-X0)/DX;
383 G4int jj=static_cast<int>(d);
384 if (jj<0) jj=0;
385 else if(jj>N2) jj=N2;
386 d-=jj; // excess
387 G4double yi=Y[jj];
388 G4double sigma=yi+(Y[jj+1]-yi)*d;
389
390 return sigma;
391 }
392