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aee8290b | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
acd84897 | 16 | /* $Id$ */ |
aee8290b | 17 | |
116cbefd | 18 | //------------------------------------------------------------------------- |
116cbefd | 19 | // Field with Magnetic Field map |
5d8718b8 | 20 | // Used by AliRun class |
21 | // Author: | |
116cbefd | 22 | //------------------------------------------------------------------------- |
23 | ||
090026bf | 24 | #include <TMath.h> |
25 | #include <TSystem.h> | |
e2afb3b6 | 26 | |
594d8990 | 27 | #include "AliLog.h" |
e2afb3b6 | 28 | #include "AliMagFDM.h" |
aee8290b | 29 | |
30 | ClassImp(AliMagFDM) | |
31 | ||
e2afb3b6 | 32 | //_______________________________________________________________________ |
33 | AliMagFDM::AliMagFDM(): | |
34 | fSolenoid(0), | |
35 | fInd(0), | |
36 | fZmin(0), | |
37 | fZmax(0), | |
38 | fYmax(0), | |
39 | fYmin(0), | |
40 | fZpmx(0), | |
41 | fZpmn(0), | |
42 | fRmax(0), | |
43 | fRmin(0), | |
44 | fXdel(0), | |
45 | fYdel(0), | |
46 | fZdel(0), | |
47 | fRdel(0), | |
48 | fPhid(0), | |
49 | fZpdl(0), | |
50 | fCx1(0), | |
51 | fCx2(0), | |
52 | fAx1(0), | |
53 | fAx2(0), | |
54 | fXl(0), | |
55 | fYl(0), | |
56 | fZl(0), | |
57 | fRn(0), | |
58 | fPhin(0), | |
59 | fZpl(0) | |
60 | { | |
61 | // | |
62 | // Default constructor for the Dipole field | |
63 | // | |
64 | } | |
65 | ||
66 | //_______________________________________________________________________ | |
d0f1ee3b | 67 | AliMagFDM::AliMagFDM(const char *name, const char *title, Int_t integ, |
68 | Float_t factor, Float_t fmax): | |
57754f18 | 69 | AliMagFC(name,title,integ,factor,fmax), |
e2afb3b6 | 70 | fSolenoid(0), |
71 | fInd(0), | |
72 | fZmin(0), | |
73 | fZmax(0), | |
74 | fYmax(0), | |
75 | fYmin(0), | |
76 | fZpmx(0), | |
77 | fZpmn(0), | |
78 | fRmax(0), | |
79 | fRmin(0), | |
80 | fXdel(0), | |
81 | fYdel(0), | |
82 | fZdel(0), | |
83 | fRdel(0), | |
84 | fPhid(0), | |
85 | fZpdl(0), | |
86 | fCx1(0), | |
87 | fCx2(0), | |
88 | fAx1(0), | |
89 | fAx2(0), | |
90 | fXl(0), | |
91 | fYl(0), | |
92 | fZl(0), | |
93 | fRn(0), | |
94 | fPhin(0), | |
95 | fZpl(0) | |
aee8290b | 96 | { |
ef42d733 | 97 | // |
98 | // Standard constructor for the Dipole field | |
99 | // | |
aee8290b | 100 | fType = kDipoMap; |
d8408e76 | 101 | fMap = 3; |
4cc8933f | 102 | SetSolenoidField(); |
d8408e76 | 103 | |
594d8990 | 104 | AliDebug(1, Form( |
105 | "Field Map for Muon Arm from IP till muon filter %s created: map= %d, integ= %d, factor= %f, file=%s", | |
106 | fName.Data(), fMap ,integ,factor,fTitle.Data())); | |
e678332c | 107 | |
aee8290b | 108 | } |
109 | ||
e2afb3b6 | 110 | //_______________________________________________________________________ |
6f3038e9 | 111 | void AliMagFDM::Field(Float_t *xfi, Float_t *b) const |
aee8290b | 112 | { |
113 | // | |
114 | // Main routine to compute the field in a point | |
115 | // | |
e2afb3b6 | 116 | const Double_t keps=0.1E-06; |
116cbefd | 117 | const Double_t kPI2=2.*TMath::Pi(); |
e2afb3b6 | 118 | const Double_t kone=1; |
119 | ||
120 | const Int_t kiip=33; | |
121 | const Int_t kmiip=0; | |
122 | const Int_t kliip=0; | |
123 | ||
124 | const Int_t kiic=0; | |
125 | const Int_t kmiic=0; | |
126 | const Int_t kliic=0; | |
127 | ||
128 | const Double_t kfZbg=502.92; // Start of Map using in z | |
129 | const Double_t kfZL3=600; // Beginning of L3 door in z | |
aee8290b | 130 | |
131 | Double_t x[3]; | |
132 | Double_t xL3[3]; | |
133 | Double_t bint[3]; | |
134 | ||
135 | Double_t r0; | |
e2afb3b6 | 136 | Int_t iKvar,jb; |
aee8290b | 137 | |
138 | Double_t zp1, zp2,xp1,xp2,yp1,yp2; | |
139 | Double_t zz1, zz2,yy1,yy2,x2,x1; | |
140 | ||
141 | // --- start the map fiel from z = 502.92 cm --- | |
57754f18 | 142 | // |
143 | // This map has been calculated in a coordinate system in which the muon spectrometer sits at z > 0 | |
144 | // Transfor correspondingly. | |
aee8290b | 145 | |
57754f18 | 146 | x[0] = - xfi[0]; |
147 | x[1] = xfi[1]; | |
148 | x[2] = - xfi[2]; | |
e678332c | 149 | b[0]=b[1]=b[2]=0; |
57754f18 | 150 | // |
aee8290b | 151 | // printf("x[0] %f,x[1] %f,x[2] %f\n",x[0],x[1],x[2]); |
152 | ||
153 | Double_t rr=TMath::Sqrt(x[0]*x[0]+x[1]*x[1]); | |
154 | r0=rr/100; | |
155 | Double_t rPmax; | |
803c9752 | 156 | rPmax=fRmax; |
157 | if ( (-700<x[2] && x[2]<=kfZbg && | |
aee8290b | 158 | (x[0]*x[0]+(x[1]+30)*(x[1]+30))< 560*560) |
803c9752 | 159 | || (kfZbg<x[2] && x[2]<=kfZL3 && (rr>rPmax*100 && rr< 560)) ) |
aee8290b | 160 | { |
803c9752 | 161 | b[0]=b[1]=0; |
4cc8933f | 162 | b[2]=fSolenoid; |
aee8290b | 163 | } |
164 | ||
165 | xL3[0]=x[0]/100; | |
166 | xL3[1]=(x[1]+30)/100; | |
167 | xL3[2]=x[2]/100; | |
803c9752 | 168 | |
aee8290b | 169 | |
803c9752 | 170 | if (TMath::Abs(xL3[0])<=0.1E-06) xL3[0]=TMath::Sign(0.1E-05,xL3[0]); |
171 | if (TMath::Abs(xL3[1])<=0.1E-06) xL3[1]=TMath::Sign(0.1E-05,xL3[1]); | |
172 | ||
173 | Double_t xminn=xL3[2]*fAx1+fCx1; | |
174 | Double_t xmaxx=xL3[2]*fAx2+fCx2; | |
aee8290b | 175 | Double_t zCmin,zCmax,yCmin,yCmax; |
176 | ||
803c9752 | 177 | zCmin=fZmin; |
178 | zCmax=fZmax; | |
179 | yCmin=fYmin; | |
180 | yCmax=fYmax; | |
803c9752 | 181 | if ((kfZbg/100<xL3[2] && xL3[2]<=zCmin && r0<=rPmax) || ((zCmin<xL3[2] && xL3[2] <= zCmax ) && (yCmin<xL3[1] && xL3[1]<= yCmax) && (xminn<xL3[0] && xL3[0] <= xmaxx))) |
aee8290b | 182 | { |
183 | if(fMap==3) | |
184 | { | |
803c9752 | 185 | if (kfZbg/100<xL3[2] && xL3[2]<=zCmin && r0<=rPmax) |
aee8290b | 186 | { |
187 | //--------------------- Polar part ---------------------- | |
188 | ||
189 | Double_t yyp,ph0; | |
190 | Int_t kp0, lp0, mp0; | |
191 | Int_t kpi,lpi,mpi; | |
192 | Double_t alp1,alp2,alp3; | |
193 | Double_t zpz,rp,fip,cphi; | |
194 | ||
195 | kpi=kiip; | |
196 | lpi=kliip; | |
197 | mpi=kmiip; | |
198 | ||
199 | zpz=xL3[2]; | |
e678332c | 200 | kp0=FZ(zpz, fZp ,fZpdl,kpi,fZpl) ; |
201 | zp2=(zpz-fZp[kp0])/(fZp[kp0+1]-fZp[kp0]); | |
202 | zp1= kone-zp2; | |
aee8290b | 203 | yyp=xL3[1]- 0.3; |
e678332c | 204 | cphi=TMath::Abs(yyp/r0); |
205 | Int_t kcphi=0; | |
206 | if (cphi > kone) { | |
594d8990 | 207 | AliDebug(2,Form("xL3[0] %e, xL3[1] %e, xL3[2] %e, yyp %e, r0 %e, cphi %e",xL3[0],xL3[1],xL3[2],yyp,r0,cphi)); |
e678332c | 208 | cphi =kone; |
209 | kcphi=777; | |
210 | } | |
aee8290b | 211 | ph0=TMath::ACos(cphi); |
116cbefd | 212 | if (xL3[0] < 0 && yyp > 0 ) {ph0=kPI2/2 - ph0;} |
213 | if (xL3[0] < 0 && yyp < 0 ) {ph0=kPI2/2 + ph0;} | |
214 | if (xL3[0] > 0 && yyp < 0 ) {ph0=kPI2 - ph0;} | |
215 | if (ph0 > kPI2) { ph0=ph0 - kPI2;} | |
e678332c | 216 | if (kcphi==777) { |
594d8990 | 217 | AliDebug(2,Form("xL3[0] %e, xL3[1] %e, xL3[2] %e, yyp %e, r0 %e, ph0 %e",xL3[0],xL3[1],xL3[2],yyp,r0,ph0)); |
e678332c | 218 | } |
219 | fip=ph0; | |
220 | mp0=FZ(fip,fPhi,fPhid ,mpi,fPhin); | |
221 | xp2=(fip-fPhi[mp0])/(fPhi[mp0+1]-fPhi[mp0]); | |
222 | xp1=kone-xp2; | |
aee8290b | 223 | |
224 | Double_t rDel; | |
803c9752 | 225 | rDel=fRdel; |
aee8290b | 226 | |
803c9752 | 227 | if (r0<= fRdel) |
aee8290b | 228 | { |
229 | ||
230 | if(r0< keps) | |
231 | { | |
232 | ||
803c9752 | 233 | bint[0]=(zp1*fBpx[kp0][0][0] + zp2*fBpx[kp0+1][0][0])*10; |
234 | bint[1]=(zp1*fBpy[kp0][0][0] + zp2*fBpy[kp0+1][0][0])*10; | |
235 | bint[2]=(zp1*fBpz[kp0][0][0] + zp2*fBpz[kp0+1][0][0])*10; | |
aee8290b | 236 | |
803c9752 | 237 | } else { |
aee8290b | 238 | |
803c9752 | 239 | alp2= fB[0][0][mp0]*yyp + fB[0][1][mp0]*xL3[0]; |
240 | alp3= fB[1][0][mp0]*yyp + fB[1][1][mp0]*xL3[0]; | |
aee8290b | 241 | alp1= kone - alp2 - alp3; |
242 | ||
243 | for (jb=0; jb<3 ; jb++) | |
803c9752 | 244 | { |
245 | iKvar=jb; | |
e678332c | 246 | bint[jb] = Ba(iKvar,zp1,zp2,alp1,alp2,alp3, kp0,mp0)*10 ; |
803c9752 | 247 | } |
248 | } // end of keps <=r0 | |
aee8290b | 249 | } |
250 | else | |
251 | { | |
252 | rp=r0; | |
253 | ||
e678332c | 254 | lp0=FZ(rp,fR ,fRdel,lpi,fRn); |
255 | yp2=(rp-fR[lp0])/(fR[lp0+1]-fR[lp0]); | |
256 | yp1=kone-yp2; | |
aee8290b | 257 | |
258 | for (jb=0; jb<3 ; jb++) | |
259 | { | |
260 | iKvar=jb; | |
e678332c | 261 | bint[jb] = Bb(zp1,zp2,yp1,yp2,xp1,xp2,iKvar,kp0,lp0,mp0)*10 ; |
aee8290b | 262 | } |
263 | } | |
264 | ||
57754f18 | 265 | b[0]=-bint[0]; |
aee8290b | 266 | b[1]=bint[1]; |
57754f18 | 267 | b[2]=-bint[2]; |
aee8290b | 268 | |
aee8290b | 269 | } |
270 | else | |
271 | { | |
272 | //-------------- Cartensian part ------------------ | |
273 | ||
274 | Double_t zzc,yyc; | |
275 | Int_t k0, l0,m0; | |
276 | Double_t xx1, xx2,dx, xxx ,xXl; | |
277 | Int_t kci,mci,lci; | |
278 | ||
279 | kci=kiic; | |
280 | lci=kliic; | |
281 | mci=kmiic; | |
282 | ||
803c9752 | 283 | xx1 = fAx1*xL3[2] + fCx1; |
284 | xx2 = fAx2*xL3[2] + fCx2; | |
aee8290b | 285 | |
286 | zzc=xL3[2]; | |
e678332c | 287 | k0=FZ(zzc, fZc ,fZdel, kci, fZl); |
288 | zz2=(zzc-fZc[k0])/(fZc[k0+1]-fZc[k0]); | |
289 | zz1=kone - zz2;; | |
aee8290b | 290 | |
291 | yyc=xL3[1]; | |
e678332c | 292 | l0=FZ(yyc, fY , fYdel,lci,fYl); |
293 | yy2=(yyc-fY[l0])/(fY[l0+1]-fY[l0]);; | |
294 | yy1=kone - yy2; | |
803c9752 | 295 | xXl = fXl-kone; |
aee8290b | 296 | dx = (xx2-xx1)/xXl; |
297 | xxx= xL3[0]-xx1; | |
aee8290b | 298 | m0 = int(xxx/dx); |
299 | ||
300 | if(xL3[0]<(xx1+m0*dx) || xL3[0] >(xx1+(m0+1)*dx)) | |
301 | { | |
302 | m0=m0+1; | |
594d8990 | 303 | AliDebug(2,Form(" m0 %d, m0+1 %d\n",m0,m0+1)); |
aee8290b | 304 | } |
305 | ||
306 | x2=(xL3[0]-( xx1+m0*dx))/dx; | |
307 | x1=kone-x2; | |
308 | m0=m0-1; | |
309 | for (jb=3; jb<6; jb++) | |
310 | { | |
311 | iKvar=jb; | |
e678332c | 312 | bint[jb-3] = Bb(zz1,zz2,yy1,yy2,x1,x2,iKvar,k0, l0, m0)*10 ; |
aee8290b | 313 | } |
314 | ||
57754f18 | 315 | b[0]=-bint[0]; |
aee8290b | 316 | b[1]=bint[1]; |
57754f18 | 317 | b[2]=-bint[2]; |
aee8290b | 318 | |
aee8290b | 319 | } |
e678332c | 320 | |
aee8290b | 321 | |
322 | } else { | |
594d8990 | 323 | AliError(Form("Unknown map of Dipole region %d",fMap)); |
aee8290b | 324 | } |
325 | ||
326 | } else { | |
57754f18 | 327 | ZDCField(xfi,b); |
aee8290b | 328 | |
d95ea23f | 329 | } |
aee8290b | 330 | |
331 | if(fFactor!=1) { | |
332 | b[0]*=fFactor; | |
333 | b[1]*=fFactor; | |
334 | b[2]*=fFactor; | |
335 | } | |
336 | } | |
337 | ||
e2afb3b6 | 338 | //_______________________________________________________________________ |
6f3038e9 | 339 | Int_t AliMagFDM::FZ(Double_t temp, const Float_t *Ar, |
ecd57058 | 340 | Float_t delu, Int_t ik, Int_t nk) const |
aee8290b | 341 | { |
342 | // | |
e678332c | 343 | // Quest of a point position at x,y,z (Cartensian) and R,Phi,z (Polar) axises |
aee8290b | 344 | // |
e678332c | 345 | Int_t l,ikj; |
346 | Double_t ddu,ar; | |
aee8290b | 347 | |
e678332c | 348 | Int_t ku,kf; |
349 | kf=0; | |
aee8290b | 350 | ar=Ar[ik]; |
351 | ddu=temp-ar; | |
352 | ||
353 | ku=int(ddu/delu); | |
e678332c | 354 | ikj=ik+ku+1; |
aee8290b | 355 | if (ddu<=0) ikj=0; |
356 | ||
357 | for(l=ikj; l<nk; l++) | |
358 | { | |
e678332c | 359 | |
803c9752 | 360 | if(temp <= Ar[l]) |
aee8290b | 361 | { |
803c9752 | 362 | |
e678332c | 363 | kf=l-1; |
364 | break; | |
aee8290b | 365 | } |
366 | } | |
e678332c | 367 | return kf; |
aee8290b | 368 | } |
369 | ||
e2afb3b6 | 370 | //_______________________________________________________________________ |
371 | Double_t AliMagFDM::Ba(Int_t kaai,Double_t zaa1, Double_t zaa2, | |
372 | Double_t alf1, Double_t alf2, Double_t alf3, | |
6f3038e9 | 373 | Int_t kaa, Int_t maa) const |
aee8290b | 374 | { |
375 | // | |
e678332c | 376 | // Calculation of field componet for case (keps <r0<= fRdel) at a given axis |
aee8290b | 377 | // |
0742d588 | 378 | Double_t fa11=0,fa12=0,fa13=0; |
379 | Double_t fa21=0,fa22=0,fa23=0; | |
380 | Double_t faY1=0,faY2=0; | |
381 | Double_t bba=0; | |
e678332c | 382 | |
8918e700 | 383 | switch (kaai) { |
384 | case 0: | |
803c9752 | 385 | fa11 = fBpx[kaa][0][0]; |
386 | fa12 = fBpx[kaa][0][maa]; | |
387 | fa13 = fBpx[kaa][0][maa+1]; | |
388 | fa21 = fBpx[kaa+1][0][0]; | |
389 | fa22 = fBpx[kaa+1][0][maa]; | |
390 | fa23 = fBpx[kaa+1][0][maa+1]; | |
8918e700 | 391 | break; |
392 | case 1: | |
803c9752 | 393 | fa11 = fBpy[kaa][0][0]; |
394 | fa12 = fBpy[kaa][0][maa]; | |
395 | fa13 = fBpy[kaa][0][maa+1]; | |
396 | fa21 = fBpy[kaa+1][0][0]; | |
397 | fa22 = fBpy[kaa+1][0][maa]; | |
398 | fa23 = fBpy[kaa+1][0][maa+1]; | |
8918e700 | 399 | break; |
400 | case 2: | |
803c9752 | 401 | fa11 = fBpz[kaa][0][0]; |
402 | fa12 = fBpz[kaa][0][maa]; | |
403 | fa13 = fBpz[kaa][0][maa+1]; | |
404 | fa21 = fBpz[kaa+1][0][0]; | |
405 | fa22 = fBpz[kaa+1][0][maa]; | |
406 | fa23 = fBpz[kaa+1][0][maa+1]; | |
8918e700 | 407 | break; |
408 | default: | |
594d8990 | 409 | AliFatal(Form("Invalid value of kaai %d",kaai)); |
aee8290b | 410 | } |
411 | faY1=alf1*fa11+alf2*fa12+alf3*fa13; | |
412 | faY2=alf1*fa21+alf2*fa22+alf3*fa23; | |
413 | bba = zaa1*faY1+zaa2*faY2; | |
e678332c | 414 | return bba; |
aee8290b | 415 | } |
416 | ||
417 | ||
e2afb3b6 | 418 | //_______________________________________________________________________ |
419 | Double_t AliMagFDM::Bb(Double_t z1,Double_t z2, Double_t y1,Double_t y2, | |
6f3038e9 | 420 | Double_t x1,Double_t x2, Int_t kv, Int_t k, Int_t l, Int_t m) const |
aee8290b | 421 | { |
422 | // | |
e678332c | 423 | // Calculation of field componet at a given axis (general case) |
aee8290b | 424 | // |
0742d588 | 425 | Double_t fy1=0,fy2=0,ffy=0; |
426 | Double_t gy1=0,gy2=0,ggy=0; | |
427 | Double_t bbi=0; | |
428 | Double_t bf11=0,bf12=0,bf21=0,bf22=0; | |
429 | Double_t bg11=0,bg12=0,bg21=0,bg22=0; | |
e678332c | 430 | |
aee8290b | 431 | |
432 | /*-----------------Polar part ------------------*/ | |
433 | ||
8918e700 | 434 | switch (kv) { |
435 | case 0: | |
803c9752 | 436 | bf11=fBpx[k][l][m]; |
437 | bf12=fBpx[k+1][l][m]; | |
438 | bf21=fBpx[k+1][l+1][m]; | |
439 | bf22=fBpx[k][l+1][m]; | |
aee8290b | 440 | |
803c9752 | 441 | bg11=fBpx[k][l][m+1]; |
442 | bg12=fBpx[k+1][l][m+1]; | |
443 | bg21=fBpx[k+1][l+1][m+1]; | |
444 | bg22=fBpx[k][l+1][m+1]; | |
8918e700 | 445 | break; |
446 | ||
447 | case 1: | |
803c9752 | 448 | bf11=fBpy[k][l][m]; |
449 | bf12=fBpy[k+1][l][m]; | |
450 | bf21=fBpy[k+1][l+1][m]; | |
451 | bf22=fBpy[k][l+1][m]; | |
aee8290b | 452 | |
803c9752 | 453 | bg11=fBpy[k][l][m+1]; |
454 | bg12=fBpy[k+1][l][m+1]; | |
455 | bg21=fBpy[k+1][l+1][m+1]; | |
456 | bg22=fBpy[k][l+1][m+1]; | |
8918e700 | 457 | break; |
458 | ||
459 | case 2: | |
803c9752 | 460 | bf11=fBpz[k][l][m]; |
461 | bf12=fBpz[k+1][l][m]; | |
462 | bf21=fBpz[k+1][l+1][m]; | |
463 | bf22=fBpz[k][l+1][m]; | |
aee8290b | 464 | |
803c9752 | 465 | bg11=fBpz[k][l][m+1]; |
466 | bg12=fBpz[k+1][l][m+1]; | |
467 | bg21=fBpz[k+1][l+1][m+1]; | |
468 | bg22=fBpz[k][l+1][m+1]; | |
8918e700 | 469 | break; |
aee8290b | 470 | /*-----------------Cartensian part ---------------*/ |
471 | ||
8918e700 | 472 | case 3: |
803c9752 | 473 | bf11=fBcx[k][l][m]; |
474 | bf12=fBcx[k+1][l][m]; | |
475 | bf21=fBcx[k+1][l+1][m]; | |
476 | bf22=fBcx[k][l+1][m]; | |
aee8290b | 477 | |
803c9752 | 478 | bg11=fBcx[k][l][m+1]; |
479 | bg12=fBcx[k+1][l][m+1]; | |
480 | bg21=fBcx[k+1][l+1][m+1]; | |
481 | bg22=fBcx[k][l+1][m+1]; | |
8918e700 | 482 | break; |
483 | ||
484 | case 4: | |
803c9752 | 485 | bf11=fBcy[k][l][m]; |
486 | bf12=fBcy[k+1][l][m]; | |
487 | bf21=fBcy[k+1][l+1][m]; | |
488 | bf22=fBcy[k][l+1][m]; | |
aee8290b | 489 | |
803c9752 | 490 | bg11=fBcy[k][l][m+1]; |
491 | bg12=fBcy[k+1][l][m+1]; | |
492 | bg21=fBcy[k+1][l+1][m+1]; | |
493 | bg22=fBcy[k][l+1][m+1]; | |
8918e700 | 494 | break; |
495 | ||
496 | case 5: | |
803c9752 | 497 | bf11=fBcz[k][l][m]; |
498 | bf12=fBcz[k+1][l][m]; | |
499 | bf21=fBcz[k+1][l+1][m]; | |
500 | bf22=fBcz[k][l+1][m]; | |
aee8290b | 501 | |
803c9752 | 502 | bg11=fBcz[k][l][m+1]; |
503 | bg12=fBcz[k+1][l][m+1]; | |
504 | bg21=fBcz[k+1][l+1][m+1]; | |
505 | bg22=fBcz[k][l+1][m+1]; | |
8918e700 | 506 | break; |
507 | ||
508 | default: | |
594d8990 | 509 | AliFatal(Form("Invalid value of kv %d",kv)); |
aee8290b | 510 | } |
511 | ||
512 | ||
513 | ||
514 | fy1=z1*bf11+z2*bf12; | |
515 | fy2=z2*bf21+z1* bf22; | |
516 | ffy=y1*fy1+ y2*fy2; | |
517 | ||
518 | ||
519 | gy1 = z1*bg11+z2*bg12; | |
520 | gy2 = z2*bg21+z1*bg22; | |
521 | ggy= y1*gy1 + y2*gy2; | |
522 | ||
523 | bbi = x1*ffy+x2*ggy; | |
e678332c | 524 | |
525 | return bbi; | |
aee8290b | 526 | |
527 | } | |
aee8290b | 528 | |
e2afb3b6 | 529 | //_______________________________________________________________________ |
aee8290b | 530 | void AliMagFDM::ReadField() |
531 | { | |
532 | // | |
533 | // Method to read the magnetic field from file | |
534 | // | |
535 | FILE *magfile; | |
536 | ||
537 | Int_t ik, il, im; | |
538 | Float_t zzp, rr,phii; | |
539 | Float_t zz, yy, bx,by,bz,bb; | |
540 | ||
541 | char *fname; | |
594d8990 | 542 | AliDebug(1,Form("Reading Magnetic Field %s from file %s",fName.Data(),fTitle.Data())); |
aee8290b | 543 | fname = gSystem->ExpandPathName(fTitle.Data()); |
544 | magfile=fopen(fname,"r"); | |
545 | delete [] fname; | |
546 | ||
594d8990 | 547 | AliDebug(2,"Cartensian part"); |
aee8290b | 548 | |
549 | if (magfile) { | |
550 | ||
551 | // Cartensian part | |
552 | ||
803c9752 | 553 | fscanf(magfile,"%d %d %d ",&fYl, &fXl, &fZl); |
aee8290b | 554 | |
594d8990 | 555 | AliDebug(3,Form("fYl %d, fXl %d, fZl %d",fYl, fXl, fZl)); |
aee8290b | 556 | |
803c9752 | 557 | for (ik=0; ik<fZl; ik++) |
aee8290b | 558 | { |
559 | ||
560 | fscanf(magfile, " %e ", &zz); | |
803c9752 | 561 | fZc[ik]=zz; |
aee8290b | 562 | |
563 | } | |
564 | ||
803c9752 | 565 | for (ik=0; ik<fYl; ik++) |
aee8290b | 566 | { |
567 | fscanf(magfile, " %e ", &yy); | |
803c9752 | 568 | fY[ik]=yy; |
aee8290b | 569 | |
570 | } | |
571 | for (ik=0; ik<81; ik++) | |
572 | { | |
594d8990 | 573 | AliDebug(4,Form("fZc %e,fY %e", fZc[ik],fY[ik])); |
aee8290b | 574 | } |
575 | ||
803c9752 | 576 | fscanf(magfile," %e %e %e %e %e %e %e %e %e %e %e ", &fYdel,&fXdel,&fZdel,&fZmax,&fZmin,&fYmax,&fYmin,&fAx1,&fCx1,&fAx2,&fCx2); |
aee8290b | 577 | |
594d8990 | 578 | AliDebug(3,Form("fYdel %e, fXdel %e, fZdel %e",fYdel,fXdel,fZdel)); |
579 | AliDebug(3,Form("fZmax %e, fZmin %e, fYmax %e,fYmin %e",fZmax,fZmin,fYmax,fYmin)); | |
580 | AliDebug(3,Form("fAx1 %e, fCx1 %e, fAx2 %e, fCx %e",fAx1,fCx1,fAx2,fCx2)); | |
aee8290b | 581 | |
582 | for (il=0; il<44; il++) { | |
583 | for (im=0; im<81; im++) { | |
584 | for (ik=0; ik<81; ik++) { | |
585 | ||
586 | fscanf(magfile, " %e ", &by); | |
803c9752 | 587 | fBcy[ik][im][il]=by; |
aee8290b | 588 | } |
589 | } | |
590 | } | |
591 | ||
592 | for (il=0; il<44; il++) { | |
593 | for (im=0; im<81; im++) { | |
594 | for (ik=0; ik<81; ik++) { | |
595 | ||
596 | fscanf(magfile, " %e ", &bx); | |
803c9752 | 597 | fBcx[ik][im][il]=bx; |
aee8290b | 598 | } |
599 | } | |
600 | } | |
601 | ||
602 | for (il=0; il<44; il++) { | |
603 | for (im=0; im<81; im++) { | |
604 | for (ik=0; ik<81; ik++) { | |
605 | ||
606 | fscanf(magfile, " %e ", &bz); | |
803c9752 | 607 | fBcz[ik][im][il]=bz; |
aee8290b | 608 | } |
609 | } | |
610 | } | |
611 | //---------------------- Polar part --------------------------------- | |
612 | ||
594d8990 | 613 | AliDebug(2,"Polar part"); |
803c9752 | 614 | fscanf(magfile,"%d %d %d ", &fZpl, &fRn, &fPhin); |
594d8990 | 615 | AliDebug(3,Form("fZpl %d, fRn %d, fPhin %d",fZpl,fRn,fPhin)); |
aee8290b | 616 | |
594d8990 | 617 | AliDebug(4," fZp array"); |
aee8290b | 618 | |
619 | for (ik=0; ik<51; ik++) | |
620 | { | |
621 | fscanf(magfile, " %e ", &zzp); | |
803c9752 | 622 | fZp[ik]=zzp; |
594d8990 | 623 | AliDebug(4,Form(" %e",fZp[ik])); |
aee8290b | 624 | } |
625 | ||
594d8990 | 626 | AliDebug(4," fR array"); |
aee8290b | 627 | |
628 | for (ik=0; ik<10; ik++) | |
629 | { | |
630 | fscanf(magfile, " %e ", &rr); | |
803c9752 | 631 | fR[ik]=rr; |
594d8990 | 632 | AliDebug(4,Form(" %e",fR[ik])); |
aee8290b | 633 | } |
634 | ||
594d8990 | 635 | // AliDebug(4,"fPhi array"); |
aee8290b | 636 | |
637 | for (il=0; il<33; il++) | |
638 | { | |
639 | fscanf(magfile, " %e ", &phii); | |
803c9752 | 640 | fPhi[il]=phii; |
594d8990 | 641 | // AliDebug(4,Form(" %e",fPhi[il])); |
aee8290b | 642 | } |
643 | ||
803c9752 | 644 | fscanf(magfile," %e %e %e %e %e %e %e ",&fZpdl,&fPhid,&fRdel,&fZpmx,&fZpmn,&fRmax, &fRmin); |
aee8290b | 645 | |
594d8990 | 646 | AliDebug(3,Form("fZpdl %e, fPhid %e, fRdel %e, fZpmx %e, fZpmn %e,fRmax %e,fRmin %e", fZpdl,fPhid, fRdel,fZpmx, fZpmn,fRmax, fRmin)); |
aee8290b | 647 | |
648 | ||
649 | for (il=0; il<33; il++) { | |
650 | for (im=0; im<10; im++) { | |
651 | for (ik=0; ik<51; ik++) { | |
652 | fscanf(magfile, " %e ", &by); | |
803c9752 | 653 | fBpy[ik][im][il]=by; |
aee8290b | 654 | } |
655 | } | |
656 | } | |
657 | ||
658 | for (il=0; il<33; il++) { | |
659 | for (im=0; im<10; im++) { | |
660 | for (ik=0; ik<51; ik++) { | |
661 | fscanf(magfile, " %e ", &bx); | |
803c9752 | 662 | fBpx[ik][im][il]=bx; |
aee8290b | 663 | } |
664 | } | |
665 | } | |
666 | ||
667 | ||
668 | for (il=0; il<33; il++) { | |
669 | for (im=0; im<10; im++) { | |
670 | for (ik=0; ik<51; ik++) { | |
671 | fscanf(magfile, " %e ", &bz); | |
803c9752 | 672 | fBpz[ik][im][il]=bz; |
aee8290b | 673 | } |
674 | } | |
675 | } | |
676 | ||
677 | ||
678 | for (il=0; il<32; il++) { | |
679 | for (im=0; im<2; im++) { | |
680 | for (ik=0; ik<2; ik++) { | |
681 | fscanf(magfile, " %e ", &bb); | |
803c9752 | 682 | fB[ik][im][il]=bb; |
aee8290b | 683 | } |
684 | } | |
685 | } | |
686 | // | |
687 | } else { | |
594d8990 | 688 | AliFatal(Form("File %s not found !",fTitle.Data())); |
aee8290b | 689 | } |
690 | } |