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27 //
28 //
29 // G4 Physics class: G4ChipsPionMinusElasticXS
30 // Created: M.V. Kossov, CERN/ITEP(Moscow), 21
31 // The last update: M.V. Kossov, CERN/ITEP (Mo
32 //
33 // -------------------------------------------
34 // Short description: Interaction cross-sectio
35 // Class extracted from CHIPS and integrated i
36 // -------------------------------------------
37 //
38
39 #include "G4ChipsPionMinusElasticXS.hh"
40 #include "G4SystemOfUnits.hh"
41 #include "G4DynamicParticle.hh"
42 #include "G4ParticleDefinition.hh"
43 #include "G4PionMinus.hh"
44 #include "G4Nucleus.hh"
45 #include "G4ParticleTable.hh"
46 #include "G4NucleiProperties.hh"
47 #include "G4IonTable.hh"
48
49 #include "G4Log.hh"
50 #include "G4Exp.hh"
51 #include "G4Pow.hh"
52
53 // factory
54 #include "G4CrossSectionFactory.hh"
55 //
56 G4_DECLARE_XS_FACTORY(G4ChipsPionMinusElasticX
57
58 G4ChipsPionMinusElasticXS::G4ChipsPionMinusEla
59 {
60 lPMin=-8.; //Min tabulated logarithmMomentu
61 lPMax= 8.; //Max tabulated logarithmMomentu
62 dlnP=(lPMax-lPMin)/nLast;//LogStep inTheTabl
63 onlyCS=true;//Flag toCalcul OnlyCS(not Si/Bi
64 lastSIG=0.; //Last calculated cross section
65 lastLP=-10.;//Last log(mom_of IncidentHadron
66 lastTM=0.; //Last t_maximum
67 theSS=0.; //TheLastSqSlope of 1st difr.Max
68 theS1=0.; //TheLastMantissa of 1st difr.Ma
69 theB1=0.; //TheLastSlope of 1st difruct.Ma
70 theS2=0.; //TheLastMantissa of 2nd difr.Ma
71 theB2=0.; //TheLastSlope of 2nd difruct.Ma
72 theS3=0.; //TheLastMantissa of 3d difr. Ma
73 theB3=0.; //TheLastSlope of 3d difruct. Ma
74 theS4=0.; //TheLastMantissa of 4th difr.Ma
75 theB4=0.; //TheLastSlope of 4th difruct.Ma
76 lastTZ=0; // Last atomic number of the tar
77 lastTN=0; // Last # of neutrons in the tar
78 lastPIN=0.; // Last initialized max momentum
79 lastCST=0; // Elastic cross-section table
80 lastPAR=0; // Parameters ForFunctionCalcula
81 lastSST=0; // E-dep of SqardSlope of 1st di
82 lastS1T=0; // E-dep of mantissa of 1st dif.
83 lastB1T=0; // E-dep of the slope of 1st dif
84 lastS2T=0; // E-dep of mantissa of 2nd difr
85 lastB2T=0; // E-dep of the slope of 2nd dif
86 lastS3T=0; // E-dep of mantissa of 3d difr.
87 lastB3T=0; // E-dep of the slope of 3d difr
88 lastS4T=0; // E-dep of mantissa of 4th difr
89 lastB4T=0; // E-dep of the slope of 4th dif
90 lastN=0; // The last N of calculated nucl
91 lastZ=0; // The last Z of calculated nucl
92 lastP=0.; // LastUsed in CrossSection Mome
93 lastTH=0.; // Last threshold momentum
94 lastCS=0.; // Last value of the Cross Secti
95 lastI=0; // The last position in the DAMD
96 }
97
98 G4ChipsPionMinusElasticXS::~G4ChipsPionMinusEl
99 {
100 std::vector<G4double*>::iterator pos;
101 for (pos=CST.begin(); pos<CST.end(); pos++)
102 { delete [] *pos; }
103 CST.clear();
104 for (pos=PAR.begin(); pos<PAR.end(); pos++)
105 { delete [] *pos; }
106 PAR.clear();
107 for (pos=SST.begin(); pos<SST.end(); pos++)
108 { delete [] *pos; }
109 SST.clear();
110 for (pos=S1T.begin(); pos<S1T.end(); pos++)
111 { delete [] *pos; }
112 S1T.clear();
113 for (pos=B1T.begin(); pos<B1T.end(); pos++)
114 { delete [] *pos; }
115 B1T.clear();
116 for (pos=S2T.begin(); pos<S2T.end(); pos++)
117 { delete [] *pos; }
118 S2T.clear();
119 for (pos=B2T.begin(); pos<B2T.end(); pos++)
120 { delete [] *pos; }
121 B2T.clear();
122 for (pos=S3T.begin(); pos<S3T.end(); pos++)
123 { delete [] *pos; }
124 S3T.clear();
125 for (pos=B3T.begin(); pos<B3T.end(); pos++)
126 { delete [] *pos; }
127 B3T.clear();
128 for (pos=S4T.begin(); pos<S4T.end(); pos++)
129 { delete [] *pos; }
130 S4T.clear();
131 for (pos=B4T.begin(); pos<B4T.end(); pos++)
132 { delete [] *pos; }
133 B4T.clear();
134 }
135
136 void
137 G4ChipsPionMinusElasticXS::CrossSectionDescrip
138 {
139 outFile << "G4ChipsPionMinusElasticXS prov
140 << "section for pion- nucleus scat
141 << "momentum. The cross section is
142 << "CHIPS parameterization of cros
143 }
144
145
146 G4bool G4ChipsPionMinusElasticXS::IsIsoApplica
147 const G4Element*,
148 const G4Material*)
149 {
150 return true;
151 }
152
153 // The main member function giving the collisi
154 // Make pMom in independent units ! (Now it is
155 G4double G4ChipsPionMinusElasticXS::GetIsoCros
156 const G4Isotope*,
157 const G4Element*,
158 const G4Material*)
159 {
160 G4double pMom=Pt->GetTotalMomentum();
161 G4int tgN = A - tgZ;
162
163 return GetChipsCrossSection(pMom, tgZ, tgN,
164 }
165
166 G4double G4ChipsPionMinusElasticXS::GetChipsCr
167 {
168
169 G4double pEn=pMom;
170 G4bool fCS = false;
171 onlyCS=fCS;
172
173 G4bool in=false; // By def
174 lastP = 0.; // New mo
175 lastN = tgN; // The la
176 lastZ = tgZ; // The la
177 lastI = (G4int)colN.size(); // Size o
178 if(lastI) for(G4int i=0; i<lastI; ++i) // Lo
179 { // The nu
180 if(colN[i]==tgN && colZ[i]==tgZ) // Isotop
181 {
182 lastI=i;
183 lastTH =colTH[i]; // Last T
184 if(pEn<=lastTH)
185 {
186 return 0.; // Energy
187 }
188 lastP =colP [i]; // Last M
189 lastCS =colCS[i]; // Last C
190 // if(std::fabs(lastP/pMom-1.)<toleranc
191 if(lastP == pMom) // Do not
192 {
193 CalculateCrossSection(fCS,-1,i,-211,la
194 return lastCS*millibarn; // Use th
195 }
196 in = true; // This
197 // Momentum pMom is in IU ! @@ Units
198 lastCS=CalculateCrossSection(fCS,-1,i,-2
199 if(lastCS<=0. && pEn>lastTH) // Corre
200 {
201 lastTH=pEn;
202 }
203 break; // Go o
204 }
205 } // End of attampt to find the nucleus in D
206 if(!in) // This n
207 {
208 //!!The slave functions must provide cross
209 lastCS=CalculateCrossSection(fCS,0,lastI,-
210 if(lastCS<=0.)
211 {
212 lastTH = 0; //ThresholdEnergy(tgZ, tgN);
213 if(pEn>lastTH)
214 {
215 lastTH=pEn;
216 }
217 }
218 colN.push_back(tgN);
219 colZ.push_back(tgZ);
220 colP.push_back(pMom);
221 colTH.push_back(lastTH);
222 colCS.push_back(lastCS);
223 return lastCS*millibarn;
224 } // End of creation of the new set of param
225 else
226 {
227 colP[lastI]=pMom;
228 colCS[lastI]=lastCS;
229 }
230 return lastCS*millibarn;
231 }
232
233 // Calculation of total elastic cross section
234 // F=0 - create AMDB, F=-1 - read&update AMDB,
235 G4double G4ChipsPionMinusElasticXS::CalculateC
236 G
237 {
238 G4double pMom=pIU/GeV; // All
239 onlyCS=CS; // Fla
240 lastLP=G4Log(pMom); // Make a
241 if(F) // Thi
242 {
243 if(F<0) // the
244 {
245 lastPIN = PIN[I]; // Max
246 lastPAR = PAR[I]; // Poi
247 lastCST = CST[I]; // Poi
248 lastSST = SST[I]; // Poi
249 lastS1T = S1T[I]; // Poi
250 lastB1T = B1T[I]; // Poi
251 lastS2T = S2T[I]; // Poi
252 lastB2T = B2T[I]; // Poi
253 lastS3T = S3T[I]; // Poi
254 lastB3T = B3T[I]; // Poi
255 lastS4T = S4T[I]; // Poi
256 lastB4T = B4T[I]; // Poi
257 }
258 if(lastLP>lastPIN && lastLP<lPMax)
259 {
260 lastPIN=GetPTables(lastLP,lastPIN,PDG,tg
261 PIN[I]=lastPIN; // Rem
262 }
263 }
264 else // Thi
265 {
266 lastPAR = new G4double[nPoints]; // All
267 lastPAR[nLast]=0; // Ini
268 lastCST = new G4double[nPoints]; // All
269 lastSST = new G4double[nPoints]; // All
270 lastS1T = new G4double[nPoints]; // All
271 lastB1T = new G4double[nPoints]; // All
272 lastS2T = new G4double[nPoints]; // All
273 lastB2T = new G4double[nPoints]; // All
274 lastS3T = new G4double[nPoints]; // All
275 lastB3T = new G4double[nPoints]; // All
276 lastS4T = new G4double[nPoints]; // All
277 lastB4T = new G4double[nPoints]; // All
278 lastPIN = GetPTables(lastLP,lPMin,PDG,tgZ,
279 PIN.push_back(lastPIN); // Fil
280 PAR.push_back(lastPAR); // Fil
281 CST.push_back(lastCST); // Fil
282 SST.push_back(lastSST); // Fil
283 S1T.push_back(lastS1T); // Fil
284 B1T.push_back(lastB1T); // Fil
285 S2T.push_back(lastS2T); // Fil
286 B2T.push_back(lastB2T); // Fil
287 S3T.push_back(lastS3T); // Fil
288 B3T.push_back(lastB3T); // Fil
289 S4T.push_back(lastS4T); // Fil
290 B4T.push_back(lastB4T); // Fil
291 } // End of creation/update of the new set o
292 // =----------= NOW Update (if necessary) an
293 if(lastLP>lastPIN && lastLP<lPMax)
294 {
295 lastPIN = GetPTables(lastLP,lastPIN,PDG,tg
296 }
297 if(!onlyCS) lastTM=GetQ2max(PDG, tgZ, tgN, p
298 if(lastLP>lPMin && lastLP<=lastPIN) // Lin
299 {
300 if(lastLP==lastPIN)
301 {
302 G4double shift=(lastLP-lPMin)/dlnP+.0000
303 G4int blast=static_cast<int>(shift);
304 if(blast<0 || blast>=nLast) G4cout<<"G4Q
305 lastSIG = lastCST[blast];
306 if(!onlyCS) // Ski
307 {
308 theSS = lastSST[blast];
309 theS1 = lastS1T[blast];
310 theB1 = lastB1T[blast];
311 theS2 = lastS2T[blast];
312 theB2 = lastB2T[blast];
313 theS3 = lastS3T[blast];
314 theB3 = lastB3T[blast];
315 theS4 = lastS4T[blast];
316 theB4 = lastB4T[blast];
317 }
318 }
319 else
320 {
321 G4double shift=(lastLP-lPMin)/dlnP;
322 G4int blast=static_cast<int>(shift);
323 if(blast<0) blast=0;
324 if(blast>=nLast) blast=nLast-1;
325 shift-=blast;
326 G4int lastL=blast+1;
327 G4double SIGL=lastCST[blast];
328 lastSIG= SIGL+shift*(lastCST[lastL]-SIGL
329 if(!onlyCS) // Ski
330 {
331 G4double SSTL=lastSST[blast];
332 theSS=SSTL+shift*(lastSST[lastL]-SSTL)
333 G4double S1TL=lastS1T[blast];
334 theS1=S1TL+shift*(lastS1T[lastL]-S1TL)
335 G4double B1TL=lastB1T[blast];
336 theB1=B1TL+shift*(lastB1T[lastL]-B1TL)
337 G4double S2TL=lastS2T[blast];
338 theS2=S2TL+shift*(lastS2T[lastL]-S2TL)
339 G4double B2TL=lastB2T[blast];
340 theB2=B2TL+shift*(lastB2T[lastL]-B2TL)
341 G4double S3TL=lastS3T[blast];
342 theS3=S3TL+shift*(lastS3T[lastL]-S3TL)
343 G4double B3TL=lastB3T[blast];
344 theB3=B3TL+shift*(lastB3T[lastL]-B3TL)
345 G4double S4TL=lastS4T[blast];
346 theS4=S4TL+shift*(lastS4T[lastL]-S4TL)
347 G4double B4TL=lastB4T[blast];
348 theB4=B4TL+shift*(lastB4T[lastL]-B4TL)
349 }
350 }
351 }
352 else lastSIG=GetTabValues(lastLP, PDG, tgZ,
353 if(lastSIG<0.) lastSIG = 0.;
354 return lastSIG;
355 }
356
357 // It has parameter sets for all tZ/tN/PDG, us
358 G4double G4ChipsPionMinusElasticXS::GetPTables
359
360 {
361 // @@ At present all nA==pA ---------> Each
362 static const G4double pwd=2727;
363 const G4int n_pimpel=38; // #
364 // -0- -1- -2-
365 G4double pimp_el[n_pimpel]={1.27,1.53,.0676,
366 .05,5.,74.,3.,3.
367 .46,1.2e6,3.5e6,
368 // -13-14--15--16--1
369 // -27--28- -29-
370 if(PDG ==-211)
371 {
372 // -- Total pp elastic cross section cs &
373 //p2=p*p;p3=p2*p;sp=sqrt(p);p2s=p2*sp;lp=l
374 //CS=2.865/p2s/(1+.0022/p2s)+(18.9+.6461*d
375 // par(0) par(7) par(1) par(2)
376 //dl2=lp-5., s1=(74.+3.*dl2*dl2)/(1+3.4/p4
377 // par(8) par(9) par(10) par(11
378 // b1=8.*p**.055/(1.+3.64/p3); s2=5.e-5+40
379 // par(15) par(16) par(17) par(18) pa
380 // s3=5.e-5+1.e10/(p4*p4+8.5e8*p2+1.e10);
381 // par(24) par(25) par(26) par(27) p
382 //
383 if(lastPAR[nLast]!=pwd) // A unique flag t
384 {
385 if ( tgZ == 1 && tgN == 0 )
386 {
387 for (G4int ip=0; ip<n_pimpel; ip++) la
388 }
389 else
390 {
391 G4double a=tgZ+tgN;
392 G4double sa=std::sqrt(a);
393 G4double ssa=std::sqrt(sa);
394 G4double asa=a*sa;
395 G4double a2=a*a;
396 G4double a3=a2*a;
397 G4double a4=a3*a;
398 G4double a5=a4*a;
399 G4double a6=a4*a2;
400 G4double a7=a6*a;
401 G4double a8=a7*a;
402 G4double a9=a8*a;
403 G4double a10=a5*a5;
404 G4double a12=a6*a6;
405 G4double a14=a7*a7;
406 G4double a16=a8*a8;
407 G4double a17=a16*a;
408 //G4double a20=a16*a4;
409 G4double a32=a16*a16;
410 // Reaction cross-section parameters (
411 lastPAR[0]=(.95*sa+2.E5/a16)/(1.+17/a)
412 lastPAR[1]=a/(1./4.4+1./a);
413 lastPAR[2]=.22/G4Pow::GetInstance()->p
414 lastPAR[3]=.5*a/(1.+3./a+1800./a8);
415 lastPAR[4]=3.E-4*G4Pow::GetInstance()-
416 lastPAR[5]=0.;
417 lastPAR[6]=(.55+.001*a2)/(1.+4.E-4*a2)
418 lastPAR[7]=(.0002/asa+4.E-9*a)/(1.+9./
419 lastPAR[8]=0.;
420 // @@ the differential cross-section i
421 if(a<6.5)
422 {
423 G4double a28=a16*a12;
424 // The main pre-exponent (pel_s
425 lastPAR[ 9]=4000*a;
426 lastPAR[10]=1.2e7*a8+380*a17;
427 lastPAR[11]=.7/(1.+4.e-12*a16);
428 lastPAR[12]=2.5/a8/(a4+1.e-16*a32);
429 lastPAR[13]=.28*a;
430 lastPAR[14]=1.2*a2+2.3;
431 lastPAR[15]=3.8/a;
432 // The main slope (pel_s
433 lastPAR[16]=.01/(1.+.0024*a5);
434 lastPAR[17]=.2*a;
435 lastPAR[18]=9.e-7/(1.+.035*a5);
436 lastPAR[19]=(42.+2.7e-11*a16)/(1.+.1
437 // The main quadratic (pel_s
438 lastPAR[20]=2.25*a3;
439 lastPAR[21]=18.;
440 lastPAR[22]=2.4e-3*a8/(1.+2.6e-4*a7)
441 lastPAR[23]=3.5e-36*a32*a8/(1.+5.e-1
442 // The 1st max pre-exponent (pel_q
443 lastPAR[24]=1.e5/(a8+2.5e12/a16);
444 lastPAR[25]=8.e7/(a12+1.e-27*a28*a28
445 lastPAR[26]=.0006*a3;
446 // The 1st max slope (pel_q
447 lastPAR[27]=10.+4.e-8*a12*a;
448 lastPAR[28]=.114;
449 lastPAR[29]=.003;
450 lastPAR[30]=2.e-23;
451 // The effective pre-exponent (pel_s
452 lastPAR[31]=1./(1.+.0001*a8);
453 lastPAR[32]=1.5e-4/(1.+5.e-6*a12);
454 lastPAR[33]=.03;
455 // The effective slope (pel_s
456 lastPAR[34]=a/2;
457 lastPAR[35]=2.e-7*a4;
458 lastPAR[36]=4.;
459 lastPAR[37]=64./a3;
460 // The gloria pre-exponent (pel_u
461 lastPAR[38]=1.e8*G4Exp(.32*asa);
462 lastPAR[39]=20.*G4Exp(.45*asa);
463 lastPAR[40]=7.e3+2.4e6/a5;
464 lastPAR[41]=2.5e5*G4Exp(.085*a3);
465 lastPAR[42]=2.5*a;
466 // The gloria slope (pel_u
467 lastPAR[43]=920.+.03*a8*a3;
468 lastPAR[44]=93.+.0023*a12;
469 }
470 else
471 {
472 G4double p1a10=2.2e-28*a10;
473 G4double r4a16=6.e14/a16;
474 G4double s4a16=r4a16*r4a16;
475 // a24
476 // a36
477 // The main pre-exponent (peh_s
478 lastPAR[ 9]=4.5*G4Pow::GetInstance()
479 lastPAR[10]=.06*G4Pow::GetInstance()
480 lastPAR[11]=.6*a/(1.+2.e15/a16);
481 lastPAR[12]=.17/(a+9.e5/a3+1.5e33/a3
482 lastPAR[13]=(.001+7.e-11*a5)/(1.+4.4
483 lastPAR[14]=(p1a10*p1a10+2.e-29)/(1.
484 // The main slope (peh_s
485 lastPAR[15]=400./a12+2.e-22*a9;
486 lastPAR[16]=1.e-32*a12/(1.+5.e22/a14
487 lastPAR[17]=1000./a2+9.5*sa*ssa;
488 lastPAR[18]=4.e-6*a*asa+1.e11/a16;
489 lastPAR[19]=(120./a+.002*a2)/(1.+2.e
490 lastPAR[20]=9.+100./a;
491 // The main quadratic (peh_s
492 lastPAR[21]=.002*a3+3.e7/a6;
493 lastPAR[22]=7.e-15*a4*asa;
494 lastPAR[23]=9000./a4;
495 // The 1st max pre-exponent (peh_q
496 lastPAR[24]=.0011*asa/(1.+3.e34/a32/
497 lastPAR[25]=1.e-5*a2+2.e14/a16;
498 lastPAR[26]=1.2e-11*a2/(1.+1.5e19/a1
499 lastPAR[27]=.016*asa/(1.+5.e16/a16);
500 // The 1st max slope (peh_q
501 lastPAR[28]=.002*a4/(1.+7.e7/G4Pow::
502 lastPAR[29]=2.e6/a6+7.2/G4Pow::GetIn
503 lastPAR[30]=11.*a3/(1.+7.e23/a16/a8)
504 lastPAR[31]=100./asa;
505 // The 2nd max pre-exponent (peh_s
506 lastPAR[32]=(.1+4.4e-5*a2)/(1.+5.e5/
507 lastPAR[33]=3.5e-4*a2/(1.+1.e8/a8);
508 lastPAR[34]=1.3+3.e5/a4;
509 lastPAR[35]=500./(a2+50.)+3;
510 lastPAR[36]=1.e-9/a+s4a16*s4a16;
511 // The 2nd max slope (peh_s
512 lastPAR[37]=.4*asa+3.e-9*a6;
513 lastPAR[38]=.0005*a5;
514 lastPAR[39]=.002*a5;
515 lastPAR[40]=10.;
516 // The effective pre-exponent (peh_u
517 lastPAR[41]=.05+.005*a;
518 lastPAR[42]=7.e-8/sa;
519 lastPAR[43]=.8*sa;
520 lastPAR[44]=.02*sa;
521 lastPAR[45]=1.e8/a3;
522 lastPAR[46]=3.e32/(a32+1.e32);
523 // The effective slope (peh_u
524 lastPAR[47]=24.;
525 lastPAR[48]=20./sa;
526 lastPAR[49]=7.e3*a/(sa+1.);
527 lastPAR[50]=900.*sa/(1.+500./a3);
528 }
529 // Parameter for lowEnergyNeutrons
530 lastPAR[51]=1.e15+2.e27/a4/(1.+2.e-18*
531 }
532 lastPAR[nLast]=pwd;
533 // and initialize the zero element of th
534 G4double lp=lPMin;
535 G4bool memCS=onlyCS;
536 onlyCS=false;
537 lastCST[0]=GetTabValues(lp, PDG, tgZ, tg
538 onlyCS=memCS;
539 lastSST[0]=theSS;
540 lastS1T[0]=theS1;
541 lastB1T[0]=theB1;
542 lastS2T[0]=theS2;
543 lastB2T[0]=theB2;
544 lastS3T[0]=theS3;
545 lastB3T[0]=theB3;
546 lastS4T[0]=theS4;
547 lastB4T[0]=theB4;
548 }
549 if(LP>ILP)
550 {
551 G4int ini = static_cast<int>((ILP-lPMin+
552 if(ini<0) ini=0;
553 if(ini<nPoints)
554 {
555 G4int fin = static_cast<int>((LP-lPMin
556 if(fin>=nPoints) fin=nLast;
557 if(fin>=ini)
558 {
559 G4double lp=0.;
560 for(G4int ip=ini; ip<=fin; ip++)
561 {
562 lp=lPMin+ip*dlnP;
563 G4bool memCS=onlyCS;
564 onlyCS=false;
565 lastCST[ip]=GetTabValues(lp, PDG,
566 onlyCS=memCS;
567 lastSST[ip]=theSS;
568 lastS1T[ip]=theS1;
569 lastB1T[ip]=theB1;
570 lastS2T[ip]=theS2;
571 lastB2T[ip]=theB2;
572 lastS3T[ip]=theS3;
573 lastB3T[ip]=theB3;
574 lastS4T[ip]=theS4;
575 lastB4T[ip]=theB4;
576 }
577 return lp;
578 }
579 else G4cout<<"*Warning*G4ChipsPionMinu
580 <<", Z="<<tgZ<<", N="<<tgN<
581 <<" > ILP="<<ILP<<" nothing
582 }
583 else G4cout<<"*Warning*G4ChipsPionMinusE
584 <<", Z="<<tgZ<<", N="<<tgN<<"
585 <<" > ILP="<<ILP<<", lPMax="<
586 }
587 }
588 else
589 {
590 // G4cout<<"*Error*G4ChipsPionMinusElastic
591 // <<", N="<<tgN<<", while it is def
592 // throw G4QException("G4ChipsPionMinusEla
593 G4ExceptionDescription ed;
594 ed << "PDG = " << PDG << ", Z = " << tgZ <
595 << ", while it is defined only for PDG=
596 G4Exception("G4ChipsPionMinusElasticXS::Ge
597 FatalException, ed);
598 }
599 return ILP;
600 }
601
602 // Returns Q2=-t in independent units (MeV^2)
603 G4double G4ChipsPionMinusElasticXS::GetExchang
604 {
605 static const G4double GeVSQ=gigaelectronvolt
606 static const G4double third=1./3.;
607 static const G4double fifth=1./5.;
608 static const G4double sevth=1./7.;
609 if(PDG!=-211)G4cout<<"Warning*G4ChipsPionMin
610 if(onlyCS)G4cout<<"Warning*G4ChipsPionMinusE
611 if(lastLP<-4.3) return lastTM*GeVSQ*G4Unifor
612 G4double q2=0.;
613 if(tgZ==1 && tgN==0) // ===>
614 {
615 G4double E1=lastTM*theB1;
616 G4double R1=(1.-G4Exp(-E1));
617 G4double E2=lastTM*theB2;
618 G4double R2=(1.-G4Exp(-E2*E2*E2));
619 G4double E3=lastTM*theB3;
620 G4double R3=(1.-G4Exp(-E3));
621 G4double I1=R1*theS1/theB1;
622 G4double I2=R2*theS2;
623 G4double I3=R3*theS3;
624 G4double I12=I1+I2;
625 G4double rand=(I12+I3)*G4UniformRand();
626 if (rand<I1 )
627 {
628 G4double ran=R1*G4UniformRand();
629 if(ran>1.) ran=1.;
630 q2=-G4Log(1.-ran)/theB1;
631 }
632 else if(rand<I12)
633 {
634 G4double ran=R2*G4UniformRand();
635 if(ran>1.) ran=1.;
636 q2=-G4Log(1.-ran);
637 if(q2<0.) q2=0.;
638 q2=G4Pow::GetInstance()->powA(q2,third)/
639 }
640 else
641 {
642 G4double ran=R3*G4UniformRand();
643 if(ran>1.) ran=1.;
644 q2=-G4Log(1.-ran)/theB3;
645 }
646 }
647 else
648 {
649 G4double a=tgZ+tgN;
650 G4double E1=lastTM*(theB1+lastTM*theSS);
651 G4double R1=(1.-G4Exp(-E1));
652 G4double tss=theSS+theSS; // for future so
653 G4double tm2=lastTM*lastTM;
654 G4double E2=lastTM*tm2*theB2;
655 if(a>6.5)E2*=tm2;
656 G4double R2=(1.-G4Exp(-E2));
657 G4double E3=lastTM*theB3;
658 if(a>6.5)E3*=tm2*tm2*tm2;
659 G4double R3=(1.-G4Exp(-E3));
660 G4double E4=lastTM*theB4;
661 G4double R4=(1.-G4Exp(-E4));
662 G4double I1=R1*theS1;
663 G4double I2=R2*theS2;
664 G4double I3=R3*theS3;
665 G4double I4=R4*theS4;
666 G4double I12=I1+I2;
667 G4double I13=I12+I3;
668 G4double rand=(I13+I4)*G4UniformRand();
669 if(rand<I1)
670 {
671 G4double ran=R1*G4UniformRand();
672 if(ran>1.) ran=1.;
673 q2=-G4Log(1.-ran)/theB1;
674 if(std::fabs(tss)>1.e-7) q2=(std::sqrt(t
675 }
676 else if(rand<I12)
677 {
678 G4double ran=R2*G4UniformRand();
679 if(ran>1.) ran=1.;
680 q2=-G4Log(1.-ran)/theB2;
681 if(q2<0.) q2=0.;
682 if(a<6.5) q2=G4Pow::GetInstance()->powA(
683 else q2=G4Pow::GetInstance()->powA(
684 }
685 else if(rand<I13)
686 {
687 G4double ran=R3*G4UniformRand();
688 if(ran>1.) ran=1.;
689 q2=-G4Log(1.-ran)/theB3;
690 if(q2<0.) q2=0.;
691 if(a>6.5) q2=G4Pow::GetInstance()->powA(
692 }
693 else
694 {
695 G4double ran=R4*G4UniformRand();
696 if(ran>1.) ran=1.;
697 q2=-G4Log(1.-ran)/theB4;
698 if(a<6.5) q2=lastTM-q2;
699 }
700 }
701 if(q2<0.) q2=0.;
702 if(!(q2>=-1.||q2<=1.)) G4cout<<"*NAN*G4QElas
703 if(q2>lastTM)
704 {
705 q2=lastTM;
706 }
707 return q2*GeVSQ;
708 }
709
710 // Returns B in independent units (MeV^-2) (al
711 G4double G4ChipsPionMinusElasticXS::GetSlope(G
712 {
713 static const G4double GeVSQ=gigaelectronvolt
714 if(onlyCS)G4cout<<"Warning*G4ChipsPionMinusE
715 if(lastLP<-4.3) return 0.; // S-wav
716 if(PDG !=-211)
717 {
718 // G4cout<<"*Error*G4ChipsPionMinusElastic
719 // <<", N="<<tgN<<", while it is def
720 // throw G4QException("G4ChipsPionMinusEla
721 G4ExceptionDescription ed;
722 ed << "PDG = " << PDG << ", Z = " << tgZ <
723 << ", while it is defined only for PDG=
724 G4Exception("G4ChipsPionMinusElasticXS::Ge
725 FatalException, ed);
726 }
727 if(theB1<0.) theB1=0.;
728 if(!(theB1>=-1.||theB1<=1.))G4cout<<"*NAN*G4
729 return theB1/GeVSQ;
730 }
731
732 // Returns half max(Q2=-t) in independent unit
733 G4double G4ChipsPionMinusElasticXS::GetHMaxT()
734 {
735 static const G4double HGeVSQ=gigaelectronvol
736 return lastTM*HGeVSQ;
737 }
738
739 // lastLP is used, so calculating tables, one
740 G4double G4ChipsPionMinusElasticXS::GetTabValu
741
742 {
743 if(PDG!=-211)G4cout<<"*Warn*G4ChipsPionMinus
744
745 //AR-24Apr2018 Switch to allow transuranic e
746 const G4bool isHeavyElementAllowed = true;
747 if(tgZ<0 || ( !isHeavyElementAllowed && tgZ>
748 {
749 G4cout<<"*Warning*G4QPionPlusElCS::GetTabV
750 return 0.;
751 }
752 G4int iZ=tgZ-1; // Z index
753 if(iZ<0)
754 {
755 iZ=0; // conversion of the neutron
756 tgZ=1;
757 tgN=0;
758 }
759 G4double p=G4Exp(lp); // moment
760 G4double sp=std::sqrt(p); // sqr
761 G4double p2=p*p;
762 G4double p3=p2*p;
763 G4double p4=p3*p;
764 if ( tgZ == 1 && tgN == 0 ) // PiMin+P
765 {
766 G4double dl2=lp-lastPAR[14];
767 theSS=lastPAR[37];
768 theS1=(lastPAR[15]+lastPAR[16]*dl2*dl2)/(1
769 (lastPAR[18]/p2+lastPAR[19]*p)/(p4+l
770 theB1=lastPAR[21]*G4Pow::GetInstance()->po
771 theS2=lastPAR[24]+lastPAR[25]/(p4+lastPAR[
772 theB2=lastPAR[27]+lastPAR[28]/(p4+lastPAR[
773 theS3=lastPAR[30]+lastPAR[31]/(p4*p4+lastP
774 theB3=lastPAR[34]+lastPAR[35]/(p4+lastPAR[
775 theS4=0.;
776 theB4=0.;
777 // Returns the total elastic pim-p cross-s
778 G4double lr=lp+lastPAR[0]; // lr
779 G4double ld=lp-lastPAR[14];
780 G4double dl3=lp+lastPAR[4]; // lm
781 G4double dl4=lp-lastPAR[6]; // lh
782 //G4cout<<"lastPAR[13] "<<lastPAR[13]<<" lastP
783 return lastPAR[1]/(lr*lr+lastPAR[2])+
784 (lastPAR[8]*ld*ld+lastPAR[9]+lastPA
785 lastPAR[12]/(dl3*dl3+lastPAR[5])+la
786 }
787 else
788 {
789 G4double p5=p4*p;
790 G4double p6=p5*p;
791 G4double p8=p6*p2;
792 G4double p10=p8*p2;
793 G4double p12=p10*p2;
794 G4double p16=p8*p8;
795 //G4double p24=p16*p8;
796 G4double dl=lp-5.;
797 G4double a=tgZ+tgN;
798 G4double pah=G4Pow::GetInstance()->powA(p,
799 G4double pa=pah*pah;
800 G4double pa2=pa*pa;
801 if(a<6.5)
802 {
803 theS1=lastPAR[9]/(1.+lastPAR[10]*p4*pa)+
804 (lastPAR[13]*dl*dl+lastPAR[14])/(1
805 theB1=(lastPAR[16]+lastPAR[17]*p2)/(p4+l
806 theSS=lastPAR[20]/(1.+lastPAR[21]/p2)+la
807 theS2=lastPAR[24]/(pa/p2+lastPAR[25]/p4)
808 theB2=lastPAR[27]*G4Pow::GetInstance()->
809 theS3=lastPAR[31]/(pa*p+lastPAR[32]/pa)+
810 theB3=lastPAR[34]/(p3+lastPAR[35]/p6)+la
811 theS4=p2*(pah*lastPAR[38]*G4Exp(-pah*las
812 lastPAR[40]/(1.+lastPAR[41]*G4
813 theB4=lastPAR[43]*pa/p2/(1.+pa*lastPAR[4
814 }
815 else
816 {
817 theS1=lastPAR[9]/(1.+lastPAR[10]/p4)+las
818 lastPAR[13]/(p5+lastPAR[14]/p16);
819 theB1=(lastPAR[15]/p8+lastPAR[19])/(p+la
820 lastPAR[17]/(1.+lastPAR[18]/p4);
821 theSS=lastPAR[21]/(p4/G4Pow::GetInstance
822 theS2=lastPAR[24]/p4/(G4Pow::GetInstance
823 theB2=lastPAR[28]/G4Pow::GetInstance()->
824 theS3=lastPAR[32]/G4Pow::GetInstance()->
825 lastPAR[33]/(1.+lastPAR[34]/p6);
826 theB3=lastPAR[37]/p8+lastPAR[38]/p2+last
827 theS4=(lastPAR[41]/p4+lastPAR[46]/p)/(1.
828 (lastPAR[43]+lastPAR[44]*dl*dl)/(1
829 theB4=lastPAR[47]/(1.+lastPAR[48]/p)+las
830 }
831 // Returns the total elastic (n/p)A cross-
832 // p1 p2
833 return (lastPAR[0]*dl*dl+lastPAR[1])/(1.+l
834 lastPAR[3]/(p4+lastPAR[4]/p3)+lastP
835 // p4 p5
836 }
837 return 0.;
838 } // End of GetTableValues
839
840 // Returns max -t=Q2 (GeV^2) for the momentum
841 G4double G4ChipsPionMinusElasticXS::GetQ2max(G
842
843 {
844 static const G4double mPi= G4PionMinus::Pion
845 static const G4double mPi2= mPi*mPi;
846
847 G4double pP2=pP*pP;
848 if(tgZ || tgN>-1)
849 {
850 G4double mt=G4ParticleTable::GetParticleTa
851
852 G4double dmt=mt+mt;
853 G4double mds=dmt*std::sqrt(pP2+mPi2)+mPi2+
854 return dmt*dmt*pP2/mds;
855 }
856 else
857 {
858 G4ExceptionDescription ed;
859 ed << "PDG = " << PDG << ",Z = " << tgZ <<
860 << ", while it is defined only for p pr
861 G4Exception("G4ChipsPionMinusElasticXS::Ge
862 FatalException, ed);
863 return 0;
864 }
865 }
866