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26 //
27 // The lust update: M.V. Kossov, CERN/ITEP(Mos
28 //
29 //
30 // G4 Physics class: G4ChipsProtonInelasticXS
31 // Created: M.V. Kossov, CERN/ITEP(Moscow), 20
32 // The last update: M.V. Kossov, CERN/ITEP (Mo
33 //
34 //
35 // *******************************************
36 // Short description: Cross-sections extracted
37 // proton-nuclear interactions. Original auth
38 // -------------------------------------------
39 //
40
41
42 #include "G4ChipsProtonInelasticXS.hh"
43 #include "G4SystemOfUnits.hh"
44 #include "G4DynamicParticle.hh"
45 #include "G4ParticleDefinition.hh"
46 #include "G4Proton.hh"
47 #include "G4Log.hh"
48 #include "G4Exp.hh"
49 #include "G4Pow.hh"
50
51
52 // factory
53 #include "G4CrossSectionFactory.hh"
54 //
55 G4_DECLARE_XS_FACTORY(G4ChipsProtonInelasticXS
56
57 G4ChipsProtonInelasticXS::G4ChipsProtonInelast
58 {
59 // Initialization of the
60 lastLEN=0; // Pointer to the lastArray of Lo
61 lastHEN=0; // Pointer to the lastArray of Hi
62 lastN=0; // The last N of calculated nucle
63 lastZ=0; // The last Z of calculated nucle
64 lastP=0.; // Last used in cross section Mom
65 lastTH=0.; // Last threshold momentum
66 lastCS=0.; // Last value of the Cross Sectio
67 lastI=0; // The last position in the DAMDB
68
69 LEN = new std::vector<G4double*>;
70 HEN = new std::vector<G4double*>;
71 }
72
73 G4ChipsProtonInelasticXS::~G4ChipsProtonInelas
74 {
75 std::size_t lens=LEN->size();
76 for(std::size_t i=0; i<lens; ++i) delete[] (
77 delete LEN;
78 std::size_t hens=HEN->size();
79 for(std::size_t i=0; i<hens; ++i) delete[] (
80 delete HEN;
81 }
82
83 void
84 G4ChipsProtonInelasticXS::CrossSectionDescript
85 {
86 outFile << "G4ChipsProtonInelasticXS provi
87 << "section for proton nucleus sca
88 << "momentum. The cross section is
89 << "CHIPS parameterization of cros
90 }
91
92 G4bool G4ChipsProtonInelasticXS::IsIsoApplicab
93 const G4Element*,
94 const G4Material*)
95 {
96 return true;
97 }
98
99
100 // The main member function giving the collisi
101 // Make pMom in independent units ! (Now it is
102 G4double G4ChipsProtonInelasticXS::GetIsoCross
103
104
105
106 {
107 G4double pMom=Pt->GetTotalMomentum();
108 G4int tgN = A - tgZ;
109
110 return GetChipsCrossSection(pMom, tgZ, tgN,
111 }
112
113 G4double G4ChipsProtonInelasticXS::GetChipsCro
114 {
115
116 G4bool in=false; // By d
117 if(tgN!=lastN || tgZ!=lastZ) // The
118 {
119 in = false; // By d
120 lastP = 0.; // New
121 lastN = tgN; // The
122 lastZ = tgZ; // The
123 lastI = (G4int)colN.size(); // Size
124 j = 0; // A#0f
125 if(lastI) for(G4int i=0; i<lastI; ++i) //
126 {
127 if(colN[i]==tgN && colZ[i]==tgZ) // Try
128 {
129 lastI=i; // Reme
130 lastTH =colTH[i]; // The
131 if(pMom<=lastTH)
132 {
133 return 0.; // Ener
134 }
135 lastP =colP [i]; // Last
136 lastCS =colCS[i]; // Last
137 in = true; // This
138 // Momentum pMom is in IU ! @@ Units
139 lastCS=CalculateCrossSection(-1,j,2212
140 if(lastCS<=0. && pMom>lastTH) // Corr
141 {
142 lastCS=0.;
143 lastTH=pMom;
144 }
145 break; // Go o
146 }
147 j++; // Incr
148 }
149 if(!in) // This
150 {
151 //!!The slave functions must provide cro
152 lastCS=CalculateCrossSection(0,j,2212,la
153 //if(lastCS>0.) // It
154 //{
155
156 lastTH = 0; //ThresholdEnergy(tgZ, tgN);
157 colN.push_back(tgN);
158 colZ.push_back(tgZ);
159 colP.push_back(pMom);
160 colTH.push_back(lastTH);
161 colCS.push_back(lastCS);
162 //} // M.K. Presence of H1 with high thresho
163 return lastCS*millibarn;
164 } // End of creation of the new set of par
165 else
166 {
167 colP[lastI]=pMom;
168 colCS[lastI]=lastCS;
169 }
170 } // End of parameters udate
171 else if(pMom<=lastTH)
172 {
173 return 0.; // Mome
174 }
175 else // It i
176 {
177 lastCS=CalculateCrossSection(1,j,2212,last
178 lastP=pMom;
179 }
180 return lastCS*millibarn;
181 }
182
183 // The main member function giving the gamma-A
184 G4double G4ChipsProtonInelasticXS::CalculateCr
185 G4int,
186 {
187 static const G4double THmin=27.; // defa
188 static const G4double THmiG=THmin*.001; // m
189 static const G4double dP=10.; // step
190 static const G4double dPG=dP*.001; // step
191 static const G4int nL=105; // A#of
192 static const G4double Pmin=THmin+(nL-1)*dP;
193 static const G4double Pmax=227000.; // maxP
194 static const G4int nH=224; // A#of
195 static const G4double milP=G4Log(Pmin);// Lo
196 static const G4double malP=G4Log(Pmax);// Hi
197 static const G4double dlP=(malP-milP)/(nH-1)
198 static const G4double milPG=G4Log(.001*Pmin)
199 if(F<=0) // This
200 {
201 if(F<0) // This
202 {
203 G4int sync=(G4int)LEN->size();
204 if(sync<=I) G4cout<<"*!*G4QProtonNuclCS:
205 lastLEN=(*LEN)[I]; // Poin
206 lastHEN=(*HEN)[I]; // Poin
207 }
208 else // This
209 {
210 lastLEN = new G4double[nL]; // Allo
211 lastHEN = new G4double[nH]; // Allo
212 // --- Instead of making a separate func
213 G4double P=THmiG; // Tabl
214 for(G4int k=0; k<nL; ++k)
215 {
216 lastLEN[k] = CrossSectionLin(targZ, ta
217 P+=dPG;
218 }
219 G4double lP=milPG;
220 for(G4int n=0; n<nH; ++n)
221 {
222 lastHEN[n] = CrossSectionLog(targZ, ta
223 lP+=dlP;
224 }
225 // --- End of possible separate function
226 // *** The synchronization check ***
227 G4int sync=(G4int)LEN->size();
228 if(sync!=I)
229 {
230 G4cout<<"***G4ChipsProtonNuclCS::CalcC
231 <<", N="<<targN<<", F="<<F<<G4en
232 //G4Exception("G4ProtonNuclearCS::Calc
233 }
234 LEN->push_back(lastLEN); // rem
235 HEN->push_back(lastHEN); // rem
236 } // End of creation of the new set of par
237 } // End of parameters udate
238 // =------------------= NOW the Magic Formul
239 G4double sigma;
240 if (Momentum<lastTH) return 0.; // It m
241 else if (Momentum<Pmin) // High
242 {
243 sigma=EquLinearFit(Momentum,nL,THmin,dP,la
244 }
245 else if (Momentum<Pmax) // High
246 {
247 G4double lP=G4Log(Momentum);
248 sigma=EquLinearFit(lP,nH,milP,dlP,lastHEN)
249 }
250 else // UHE
251 {
252 G4double P=0.001*Momentum; // Appr
253 sigma=CrossSectionFormula(targZ, targN, P,
254 }
255 if(sigma<0.) return 0.;
256 return sigma;
257 }
258
259 // Electromagnetic momentum-threshold (in MeV/
260 G4double G4ChipsProtonInelasticXS::ThresholdMo
261 {
262 static const G4double third=1./3.;
263 static const G4double pM = G4Proton::Proton(
264 static const G4double tpM= pM+pM; // D
265
266 G4double tA=tZ+tN;
267 if(tZ<.99 || tN<0.) return 0.;
268 else if(tZ==1 && tN==0) return 800.; // A
269 //G4double dE=1.263*tZ/(1.+G4Pow::GetInstanc
270 G4double dE=tZ/(1.+G4Pow::GetInstance()->pow
271 G4double tM=931.5*tA;
272 G4double T=dE+dE*(dE/2+pM)/tM;
273 return std::sqrt(T*(tpM+T));
274 }
275
276 // Calculation formula for proton-nuclear inel
277 G4double G4ChipsProtonInelasticXS::CrossSectio
278 {
279 G4double sigma=0.;
280 if(P<ThresholdMomentum(tZ,tN)*.001) return s
281 G4double lP=G4Log(P);
282 if(tZ==1&&!tN){if(P>.35) sigma=CrossSectionF
283 else if(tZ<97 && tN<152) // G
284 {
285 G4double pex=0.;
286 G4double pos=0.;
287 G4double wid=1.;
288 if(tZ==13 && tN==14) // E
289 {
290 pex=230.;
291 pos=.13;
292 wid=8.e-5;
293 }
294 else if(tZ<7)
295 {
296 if(tZ==6 && tN==6)
297 {
298 pex=320.;
299 pos=.14;
300 wid=7.e-6;
301 }
302 else if(tZ==5 && tN==6)
303 {
304 pex=270.;
305 pos=.17;
306 wid=.002;
307 }
308 else if(tZ==4 && tN==5)
309 {
310 pex=600.;
311 pos=.132;
312 wid=.005;
313 }
314 else if(tZ==3 && tN==4)
315 {
316 pex=280.;
317 pos=.19;
318 wid=.0025;
319 }
320 else if(tZ==3 && tN==3)
321 {
322 pex=370.;
323 pos=.171;
324 wid=.006;
325 }
326 else if(tZ==2 && tN==1)
327 {
328 pex=30.;
329 pos=.22;
330 wid=.0005;
331 }
332 }
333 sigma=CrossSectionFormula(tZ,tN,P,lP);
334 if(pex>0.)
335 {
336 G4double dp=P-pos;
337 sigma+=pex*G4Exp(-dp*dp/wid);
338 }
339 }
340 else
341 {
342 G4cerr<<"-Warning-G4ChipsProtonNuclearXS::
343 sigma=0.;
344 }
345 if(sigma<0.) return 0.;
346 return sigma;
347 }
348
349 // Calculation formula for proton-nuclear inel
350 G4double G4ChipsProtonInelasticXS::CrossSectio
351 {
352 G4double P=G4Exp(lP);
353 return CrossSectionFormula(tZ, tN, P, lP);
354 }
355 // Calculation formula for proton-nuclear inel
356 G4double G4ChipsProtonInelasticXS::CrossSectio
357
358 {
359 G4double sigma=0.;
360 if(tZ==1 && !tN) // p
361 {
362 G4double El(0.),To(0.); // U
363 if(P<0.1) // C
364 {
365 G4double p2=P*P;
366 El=1./(0.00012+p2*0.2);
367 To=El;
368 }
369 else if(P>1000.)
370 {
371 G4double lp=G4Log(P)-3.5;
372 G4double lp2=lp*lp;
373 El=0.0557*lp2+6.72;
374 To=0.3*lp2+38.2;
375 }
376 else
377 {
378 G4double p2=P*P;
379 G4double LE=1./(0.00012+p2*0.2);
380 G4double lp=G4Log(P)-3.5;
381 G4double lp2=lp*lp;
382 G4double rp2=1./p2;
383 El=LE+(0.0557*lp2+6.72+32.6/P)/(1.+rp2/P
384 To=LE+(0.3 *lp2+38.2+52.7*rp2)/(1.+2.7
385 } // Cop
386
387 /*
388 G4double p2=P*P;
389 G4double lp=lP-3.5;
390 G4double lp2=lp*lp;
391 G4double rp2=1./p2;
392 G4double El=(.0557*lp2+6.72+30./P)/(1.+.49
393 G4double To=(.3*lp2+38.2)/(1.+.54*rp2*rp2)
394 */
395
396 sigma=To-El;
397 }
398 else if(tZ<97 && tN<152) // G
399 {
400 //G4double lP=G4Log(P); // Alre
401 G4double d=lP-4.2;
402 G4double p2=P*P;
403 G4double p4=p2*p2;
404 G4double a=tN+tZ; //
405 G4double al=G4Log(a);
406 G4double sa=std::sqrt(a);
407 G4double a2=a*a;
408 G4double a2s=a2*sa;
409 G4double a4=a2*a2;
410 G4double a8=a4*a4;
411 G4double a12=a8*a4;
412 G4double a16=a8*a8;
413 G4double c=(170.+3600./a2s)/(1.+65./a2s);
414 G4double dl=al-3.;
415 G4double dl2=dl*dl;
416 G4double r=.21+.62*dl2/(1.+.5*dl2);
417 G4double gg=40.*G4Exp(al*0.712)/(1.+12.2/a
418 G4double e=318.+a4/(1.+.0015*a4/G4Exp(al*0
419 8.e-18/(1./a16+1.3e-20)/(1.+1.e
420 G4double ss=3.57+.009*a2/(1.+.0001*a2*a);
421 G4double h=(.01/a4+2.5e-6/a)*(1.+6.e-6*a2*
422 sigma=(c+d*d)/(1.+r/p4)+(gg+e*G4Exp(-ss*P)
423 }
424 else
425 {
426 G4cerr<<"-Warning-G4QProtonNuclearCroSect:
427 sigma=0.;
428 }
429 if(sigma<0.) return 0.;
430 return sigma;
431 }
432
433 G4double G4ChipsProtonInelasticXS::EquLinearFi
434 {
435 if(DX<=0. || N<2)
436 {
437 G4cerr<<"***G4ChipsProtonInelasticXS::Eq
438 return Y[0];
439 }
440
441 G4int N2=N-2;
442 G4double d=(X-X0)/DX;
443 G4int jj=static_cast<int>(d);
444 if (jj<0) jj=0;
445 else if(jj>N2) jj=N2;
446 d-=jj; // excess
447 G4double yi=Y[jj];
448 G4double sigma=yi+(Y[jj+1]-yi)*d;
449
450 return sigma;
451 }
452