1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.1 2000/07/11 18:24:59 fca
19 Coding convention corrections + few minor bug fixes
25 #include "AliMagFDM.h"
31 //________________________________________
32 AliMagFDM::AliMagFDM(const char *name, const char *title, const Int_t integ,
33 const Int_t map, const Float_t factor, const Float_t fmax)
34 : AliMagF(name,title,integ,map,factor,fmax)
39 printf("Field Map for Muon Arm from IP till muon filter %s created: map= %d, factor= %f, file=%s\n",fName.Data(),map,factor,fTitle.Data());
43 //________________________________________
45 void AliMagFDM::Field(Float_t *xfi, Float_t *b)
48 // Main routine to compute the field in a point
50 static const Double_t keps=0.1E-06;
51 static const Double_t kpi2=.6283185E+01;
52 static const Double_t kone=1;
54 static const Int_t kiip=33;
55 static const Int_t kmiip=0;
56 static const Int_t kliip=0;
58 static const Int_t kiic=0;
59 static const Int_t kmiic=0;
60 static const Int_t kliic=0;
62 static const Double_t kfdZbg=502.92; // Start of Map using in z
63 static const Double_t kfdZL3=600; // Beginning of L3 door in z
74 Double_t zp1, zp2,xp1,xp2,yp1,yp2;
75 Double_t zz1, zz2,yy1,yy2,x2,x1;
77 // --- start the map fiel from z = 502.92 cm ---
83 // printf("x[0] %f,x[1] %f,x[2] %f\n",x[0],x[1],x[2]);
85 Double_t rr=TMath::Sqrt(x[0]*x[0]+x[1]*x[1]);
89 if ( (-700<x[2] && x[2]<=kfdZbg &&
90 (x[0]*x[0]+(x[1]+30)*(x[1]+30))< 560*560)
91 || (kfdZbg<x[2] && x[2]<=kfdZL3 && rr>=rPmax*100) )
100 Double_t xminn=xL3[2]*fdAx1+fdCx1;
101 Double_t xmaxx=xL3[2]*fdAx2+fdCx2;
102 Double_t zCmin,zCmax,yCmin,yCmax;
109 if ((kfdZbg/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)))
113 if (xL3[2]<zCmin && r0<rPmax)
115 //--------------------- Polar part ----------------------
120 Double_t alp1,alp2,alp3;
121 Double_t zpz,rp,fip,cphi;
129 FZ(&zpz, fdZp ,&fdZpdl,&kpi,&kp0,&zp1 ,&zp2,&fdZpl) ;
133 ph0=TMath::ACos(cphi);
134 if (xL3[0]< 0) {ph0=kpi2 - ph0;}
137 FZ(&fip,fdPhi,&fdPhid ,&mpi,&mp0, &xp1,&xp2,&fdPhin);
148 bint[0]=(zp1*fdBpx[kp0][0][0] + zp2*fdBpx[kp0+1][0][0])*10;
149 bint[1]=(zp1*fdBpy[kp0][0][0] + zp2*fdBpy[kp0+1][0][0])*10;
150 bint[2]=(zp1*fdBpz[kp0][0][0] + zp2*fdBpz[kp0+1][0][0])*10;
154 alp2= fdB[0][0][mp0]*yyp + fdB[0][1][mp0]*xL3[0];
155 alp3= fdB[1][0][mp0]*yyp + fdB[1][1][mp0]*xL3[0];
156 alp1= kone - alp2 - alp3;
158 for (jb=0; jb<3 ; jb++)
161 FRfuncBi(&iKvar,&zp1,&zp2,&alp1,&alp2,&alp3, &kp0,&mp0, &bbj);
169 FZ(&rp,fdR ,&fdRdel,&lpi,&lp0,&yp1,&yp2,&fdRn);
171 for (jb=0; jb<3 ; jb++)
174 FGfuncBi(&zp1,&zp2,&yp1,&yp2,&xp1,&xp2,&iKvar,&kp0,&lp0,&mp0,&bbj);
184 // fprintf(fitest,"------------- Freg2 run -------------\n");
189 //-------------- Cartensian part ------------------
193 Double_t xx1, xx2,dx, xxx ,xXl;
200 xx1 = fdAx1*xL3[2] + fdCx1;
201 xx2 = fdAx2*xL3[2] + fdCx2;
204 FZ(&zzc, fdZc ,&fdZdel, &kci,&k0, &zz1, &zz2, &fdZl);
207 FZ(&yyc, fdY , &fdYdel,&lci, &l0, &yy1, &yy2,&fdYl);
215 if(xL3[0]<(xx1+m0*dx) || xL3[0] >(xx1+(m0+1)*dx))
218 printf(" m0 %d, m0+1 %d\n",m0,m0+1);
221 x2=(xL3[0]-( xx1+m0*dx))/dx;
224 for (jb=3; jb<6; jb++)
227 FGfuncBi(&zz1,&zz2,&yy1,&yy2,&x1,&x2,&iKvar,&k0, &l0, &m0, &bbj);
228 bint[jb-3] = bbj*10 ;
235 // fprintf(fitest,"------------ Freg1 run -----------------\n");
239 printf("Unknown map of Dipole region %d\n",fMap);
244 //This is the ZDC part
245 Float_t rad2=x[0]*x[0]+x[1]*x[1];
249 // Separator Dipole D2
250 if(x[2]<kD2END) b[1]=kFDIP;
251 } else if(x[2]>kD1BEG) {
253 // Separator Dipole D1
254 if(x[2]<kD1END) b[1]=-kFDIP;
258 // First quadrupole of inner triplet de-focussing in x-direction
267 } else if(x[2]>kZ3BEG) {
274 } else if(x[2]>kZ2BEG) {
281 } else if(x[2]>kZ1BEG) {
288 } else if(x[2]>kCORBEG) {
290 // Corrector dipole (because of dimuon arm)
306 //_________________________________________
308 void AliMagFDM::FZ(Double_t *u, Float_t *Ar, Float_t *du,Int_t *ki,Int_t *kf,Double_t *a1,Double_t *a2 ,Int_t *nu)
312 // Z component of the field
314 static const Double_t kone=1;
317 Double_t ddu,delu,ar;
332 for(l=ikj; l<nk; l++)
338 *a2=(temp-Ar[l])/(Ar[l+1]-Ar[l]);
345 /*-------------FRfuncBi----------------*/
347 void AliMagFDM::FRfuncBi(Int_t *kai,Double_t *za1, Double_t *za2, Double_t *al1, Double_t *al2, Double_t *al3, Int_t *ka, Int_t *ma, Double_t *ba)
350 // This method needs to be commented
352 Double_t fa11,fa12,fa13;
353 Double_t fa21,fa22,fa23;
357 Double_t zaa1,zaa2,alf1,alf2,alf3;
370 fa11 = fdBpx[kaa][0][0];
371 fa12 = fdBpx[kaa][0][maa];
372 fa13 = fdBpx[kaa][0][maa+1];
373 fa21 = fdBpx[kaa+1][0][0];
374 fa22 = fdBpx[kaa+1][0][maa];
375 fa23 = fdBpx[kaa+1][0][maa+1];
378 fa11 = fdBpy[kaa][0][0];
379 fa12 = fdBpy[kaa][0][maa];
380 fa13 = fdBpy[kaa][0][maa+1];
381 fa21 = fdBpy[kaa+1][0][0];
382 fa22 = fdBpy[kaa+1][0][maa];
383 fa23 = fdBpy[kaa+1][0][maa+1];
386 fa11 = fdBpz[kaa][0][0];
387 fa12 = fdBpz[kaa][0][maa];
388 fa13 = fdBpz[kaa][0][maa+1];
389 fa21 = fdBpz[kaa+1][0][0];
390 fa22 = fdBpz[kaa+1][0][maa];
391 fa23 = fdBpz[kaa+1][0][maa+1];
394 Fatal("FRfuncBi","Invalid value of kaai %d\n",kaai);
397 faY1=alf1*fa11+alf2*fa12+alf3*fa13;
398 faY2=alf1*fa21+alf2*fa22+alf3*fa23;
399 bba = zaa1*faY1+zaa2*faY2;
405 /*----------- FGfuncBi------------*/
407 void AliMagFDM::FGfuncBi(Double_t *zz1,Double_t *zz2, Double_t *yy1,Double_t *yy2, Double_t *xx1,Double_t *xx2, Int_t *kvr, Int_t *kk, Int_t *ll, Int_t *mm, Double_t *bb)
410 // This method needs to be commented
412 Double_t fy1, fy2, ffy;
413 Double_t gy1,gy2,ggy;
414 Double_t z1,z2,y1,y2,x1,x2;
419 Double_t bf11,bf12,bf21,bf22;
420 Double_t bg11,bg12,bg21,bg22;
434 /*-----------------Polar part ------------------*/
439 bf12=fdBpx[k+1][l][m];
440 bf21=fdBpx[k+1][l+1][m];
441 bf22=fdBpx[k][l+1][m];
443 bg11=fdBpx[k][l][m+1];
444 bg12=fdBpx[k+1][l][m+1];
445 bg21=fdBpx[k+1][l+1][m+1];
446 bg22=fdBpx[k][l+1][m+1];
451 bf12=fdBpy[k+1][l][m];
452 bf21=fdBpy[k+1][l+1][m];
453 bf22=fdBpy[k][l+1][m];
455 bg11=fdBpy[k][l][m+1];
456 bg12=fdBpy[k+1][l][m+1];
457 bg21=fdBpy[k+1][l+1][m+1];
458 bg22=fdBpy[k][l+1][m+1];
463 bf12=fdBpz[k+1][l][m];
464 bf21=fdBpz[k+1][l+1][m];
465 bf22=fdBpz[k][l+1][m];
467 bg11=fdBpz[k][l][m+1];
468 bg12=fdBpz[k+1][l][m+1];
469 bg21=fdBpz[k+1][l+1][m+1];
470 bg22=fdBpz[k][l+1][m+1];
472 /*-----------------Cartensian part ---------------*/
476 bf12=fdBcx[k+1][l][m];
477 bf21=fdBcx[k+1][l+1][m];
478 bf22=fdBcx[k][l+1][m];
480 bg11=fdBcx[k][l][m+1];
481 bg12=fdBcx[k+1][l][m+1];
482 bg21=fdBcx[k+1][l+1][m+1];
483 bg22=fdBcx[k][l+1][m+1];
488 bf12=fdBcy[k+1][l][m];
489 bf21=fdBcy[k+1][l+1][m];
490 bf22=fdBcy[k][l+1][m];
492 bg11=fdBcy[k][l][m+1];
493 bg12=fdBcy[k+1][l][m+1];
494 bg21=fdBcy[k+1][l+1][m+1];
495 bg22=fdBcy[k][l+1][m+1];
500 bf12=fdBcz[k+1][l][m];
501 bf21=fdBcz[k+1][l+1][m];
502 bf22=fdBcz[k][l+1][m];
504 bg11=fdBcz[k][l][m+1];
505 bg12=fdBcz[k+1][l][m+1];
506 bg21=fdBcz[k+1][l+1][m+1];
507 bg22=fdBcz[k][l+1][m+1];
511 Fatal("FGfuncBi","Invalid value of kv %d\n",kv);
518 fy2=z2*bf21+z1* bf22;
522 gy1 = z1*bg11+z2*bg12;
523 gy2 = z2*bg21+z1*bg22;
524 ggy= y1*gy1 + y2*gy2;
531 //____________________________________________
533 void AliMagFDM::ReadField()
536 // Method to read the magnetic field from file
541 Float_t zzp, rr,phii;
542 Float_t zz, yy, bx,by,bz,bb;
545 printf("Reading Magnetic Field %s from file %s\n",fName.Data(),fTitle.Data());
546 fname = gSystem->ExpandPathName(fTitle.Data());
547 magfile=fopen(fname,"r");
550 printf("Cartensian part\n");
556 fscanf(magfile,"%d %d %d ",&fdYl, &fdXl, &fdZl);
558 printf("fdYl %d, fdXl %d, fdZl %d\n",fdYl, fdXl, fdZl);
560 for (ik=0; ik<fdZl; ik++)
563 fscanf(magfile, " %e ", &zz);
568 for (ik=0; ik<fdYl; ik++)
570 fscanf(magfile, " %e ", &yy);
574 for (ik=0; ik<81; ik++)
576 printf("fdZc %e,fdY %e\n", fdZc[ik],fdY[ik]);
579 fscanf(magfile," %e %e %e %e %e %e %e %e %e %e %e ", &fdYdel,&fdXdel,&fdZdel,&fdZmax,&fdZmin,&fdYmax,&fdYmin,&fdAx1,&fdCx1,&fdAx2,&fdCx2);
581 printf("fdYdel %e, fdXdel %e, fdZdel %e\n",fdYdel,fdXdel,fdZdel);
582 printf("fdZmax %e, fdZmin %e, fdYmax %e,fdYmin %e\n",fdZmax,fdZmin,fdYmax,fdYmin);
583 printf("fdAx1 %e, fdCx1 %e, fdAx2 %e, fdCx %e\n",fdAx1,fdCx1,fdAx2,fdCx2);
585 for (il=0; il<44; il++) {
586 for (im=0; im<81; im++) {
587 for (ik=0; ik<81; ik++) {
589 fscanf(magfile, " %e ", &by);
590 fdBcy[ik][im][il]=by;
595 for (il=0; il<44; il++) {
596 for (im=0; im<81; im++) {
597 for (ik=0; ik<81; ik++) {
599 fscanf(magfile, " %e ", &bx);
600 fdBcx[ik][im][il]=bx;
605 for (il=0; il<44; il++) {
606 for (im=0; im<81; im++) {
607 for (ik=0; ik<81; ik++) {
609 fscanf(magfile, " %e ", &bz);
610 fdBcz[ik][im][il]=bz;
614 //---------------------- Polar part ---------------------------------
616 printf("Polar part\n");
617 fscanf(magfile,"%d %d %d ", &fdZpl, &fdRn, &fdPhin);
618 printf("fdZpl %d, fdRn %d, fdPhin %d\n",fdZpl,fdRn,fdPhin);
620 printf(" fdZp array\n");
622 for (ik=0; ik<51; ik++)
624 fscanf(magfile, " %e ", &zzp);
626 printf(" %e\n",fdZp[ik]);
629 printf(" fdR array\n");
631 for (ik=0; ik<10; ik++)
633 fscanf(magfile, " %e ", &rr);
635 printf(" %e\n",fdR[ik]);
638 // printf("fdPhi array\n");
640 for (il=0; il<33; il++)
642 fscanf(magfile, " %e ", &phii);
644 // printf(" %e\n",fdPhi[il]);
647 fscanf(magfile," %e %e %e %e %e %e %e ",&fdZpdl,&fdPhid,&fdRdel,&fdZpmx,&fdZpmn,&fdRmax, &fdRmin);
649 printf("fdZpdl %e, fdPhid %e, fdRdel %e, fdZpmx %e, fdZpmn %e,fdRmax %e,fdRmin %e \n", fdZpdl,fdPhid, fdRdel,fdZpmx, fdZpmn,fdRmax, fdRmin);
652 for (il=0; il<33; il++) {
653 for (im=0; im<10; im++) {
654 for (ik=0; ik<51; ik++) {
655 fscanf(magfile, " %e ", &by);
656 fdBpy[ik][im][il]=by;
661 for (il=0; il<33; il++) {
662 for (im=0; im<10; im++) {
663 for (ik=0; ik<51; ik++) {
664 fscanf(magfile, " %e ", &bx);
665 fdBpx[ik][im][il]=bx;
671 for (il=0; il<33; il++) {
672 for (im=0; im<10; im++) {
673 for (ik=0; ik<51; ik++) {
674 fscanf(magfile, " %e ", &bz);
675 fdBpz[ik][im][il]=bz;
681 for (il=0; il<32; il++) {
682 for (im=0; im<2; im++) {
683 for (ik=0; ik<2; ik++) {
684 fscanf(magfile, " %e ", &bb);
691 printf("File %s not found !\n",fTitle.Data());
695 //________________________________