VZERO/AliVZEROv2.cxx

   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
  16
  17 //////////////////////////////////////////////////////////////////////
  18 //                                                                  //
  19 //  (V-zero) detector  version 2  as designed by the Lyon group     //
  20 //   All comments should be sent to Brigitte CHEYNIS :              //
  21 //                                  b.cheynis@ipnl.in2p3.fr         //
  22 //   Geometry of the  19th of april 2002                            //
  23 //  (circular instead of trapezoidal shapes as in previous versions //
  24 //                                                                  //
  25 //////////////////////////////////////////////////////////////////////
  26
  27 #include <TMath.h>
  28 #include <TGeometry.h>
  29 #include <TTRD2.h>
  30 #include <TCONE.h>
  31 #include <TPGON.h>
  32 #include <TPCON.h>
  33 #include <TSPHE.h>
  34 #include <TTRAP.h>
  35 #include <TTUBS.h>
  36 #include <TTUBE.h>
  37 #include <TBRIK.h>
  38 #include <TBox.h>
  39
  40 #include <TShape.h>
  41 #include <TNode.h>
  42 #include <TClonesArray.h>
  43 #include <TH1.h>
  44 #include <string.h>
  45 #include <Riostream.h>
  46
  47 #include "AliVZEROv2.h"
  48 #include "AliRun.h"
  49 #include "AliMagF.h"
  50 #include "AliMC.h"
  51 #include "AliVZEROhit.h"
  52 #include "AliVZEROdigit.h"
  53 #include <Riostream.h>
  54 #include <Riostream.h>
  55
  56 #include <TGeant3.h>
  57 #include <stdlib.h>
  58 #include "TObjectTable.h"
  59
  60 #include "AliConst.h"
  61 #include "TLorentzVector.h"
  62
  63 ClassImp(AliVZEROv2)
  64
  65 //--------------------------------------------------------------------
  66 AliVZEROv2:: AliVZEROv2():AliVZERO()
  67 {
  68
  69
  70 }
  71 //--------------------------------------------------------------------
  72 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  73  AliVZERO(name,title)
  74 {
  75
  76 // Standard constructor for V-zeroR Detector (right part)  version 0
  77
  78
  79   Int_t i;
  80
  81   printf("\n");
  82   for(i=0;i<30;i++) printf("*");
  83   printf(" Create VZERO object ");
  84   for(i=0;i<30;i++) printf("*");
  85   printf("\n");
  86
  87 }
  88
  89 //-------------------------------------------------------------------------
  90 void AliVZEROv2::CreateGeometry()
  91 {
  92
  93 // Creates the GEANT geometry of the V-zero Detector  version 2
  94
  95
  96   Int_t i;
  97
  98   printf("\n");
  99   for(i=0;i<30;i++) printf("*");
 100   printf(" Create VZERO Geometry ");
 101   for(i=0;i<30;i++) printf("*");
 102   printf("\n");
 103
 104
 105   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 106
 107   Int_t    n_detec_R = 1;
 108   Int_t    n_detec_L = 1;
 109
 110   Int_t    n_cells_R = 1;
 111   Int_t    n_cells_L = 1;
 112
 113   Int_t    idrotm[999];
 114
 115   Float_t  height1, height2, height3, height4, height5;
 116   Float_t  height;
 117   Float_t  theta;
 118
 119   Float_t  half_thick_qua;
 120
 121   Float_t  zdet;
 122   Float_t  r0, r5;
 123   Float_t  pi = TMath::Pi();
 124
 125
 126   height1           =     2.0;           // height of cell 1, in cm
 127   height2           =     3.2;           // height of cell 2, in cm
 128   height3           =     4.9;           // height of cell 3, in cm
 129   height4           =     7.5;           // height of cell 4, in cm
 130   height5           =    12.0;           // height of cell 5, in cm
 131
 132   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
 133
 134
 135   half_thick_qua    = fThickness1/2.0;   // half thickness of elementary cell (inner ring)
 136
 137
 138   zdet              =    86.9 +fThickness/2.0;  // distance to vertex (along Z axis)
 139   r0                =    4.0;            // closest distance to center of the beam pipe
 140   height            =    height1 + height2 + height3 + height4 + height5;
 141   r5                =    r0 + height;
 142
 143
 144 // Creation of mother volume V0LE - left part - :
 145 // Entrance face at  -350.0 cm ...
 146
 147    Float_t   partube[3];
 148
 149    partube[0] =  4.3;
 150    partube[1] = 45.0;
 151    partube[2] = fThickness1/2.0;
 152
 153    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 154
 155
 156 // Creation of five rings - left part - :
 157 // Entrance face at -350.0 cm ...
 158
 159 // Mother volume V0L0 in which will be set 5 scintillator cells
 160
 161
 162   Float_t   partubs[5];
 163
 164   Float_t   r0_left      =   4.3;
 165   Float_t   height1_left =   2.6;
 166   Float_t   height2_left =   4.1;
 167   Float_t   height3_left =   6.4;
 168   Float_t   height4_left =  10.2;
 169   Float_t   height5_left =  16.9;
 170   Float_t   height_left  = height1_left + height2_left + height3_left
 171                                         + height4_left + height5_left;
 172   Float_t   r5_left      = r0_left  + height_left;
 173
 174
 175   partubs[0]      =  r0_left;
 176   partubs[1]      =  r5_left;
 177   partubs[2]      =  fThickness1/2.0;
 178   partubs[3]      =  90.0-15.0;
 179   partubs[4]      = 120.0-15.0;
 180
 181   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 182
 183   Float_t  r1_left =  r0_left + height1_left;
 184
 185   partubs[0]     =  r0_left;
 186   partubs[1]     =  r1_left;
 187
 188   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 189   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 190
 191   Float_t   r2_left  =   r1_left + height2_left;
 192
 193   partubs[0]     =  r1_left;
 194   partubs[1]     =  r2_left;
 195
 196   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 197   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 198
 199   Float_t   r3_left =   r2_left + height3_left;
 200
 201   partubs[0]     =  r2_left;
 202   partubs[1]     =  r3_left;
 203
 204   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 205   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 206
 207   Float_t   r4_left =  r3_left + height4_left;
 208
 209   partubs[0]     =  r3_left;
 210   partubs[1]     =  r4_left;
 211
 212
 213   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 214   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 215
 216   partubs[0]     =  r4_left;
 217   partubs[1]     =  r5_left;
 218   partubs[3]     =  90.0-15.0;
 219   partubs[4]     = 120.0-30.0;
 220
 221
 222   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 223   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 224
 225
 226   partubs[3]     = 120.0-30.0;
 227   partubs[4]     = 120.0-15.0;
 228
 229
 230   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 231   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 232
 233
 234 // Creation of mother volume V0RI - right part - :
 235
 236
 237   partube[0] = r0 - 0.2;
 238   partube[1] = r5 + 1.0;
 239   partube[2] = fThickness/2.0;
 240
 241
 242   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 243
 244 // Creation of  carbon lids (1 mm thick) to keep V0RI box shut...
 245
 246
 247   partube[0] =   r0;
 248   partube[1] =   r5;
 249   partube[2] =   +0.1/2.0;
 250
 251
 252   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 253   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 254   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 255
 256 // Creation of aluminum rings to maintain the V0RI pieces ...
 257
 258   partube[0] =   r0 - 0.2;
 259   partube[1] =   r0;
 260   partube[2] =   +fThickness/2.0;
 261
 262
 263   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 264   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 265
 266   partube[0] =   r5;
 267   partube[1] =   r5 + 1.0;
 268   partube[2] =   +fThickness/2.0;
 269
 270
 271   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 272   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 273
 274 // Mother volume V0R0 in which will be set 5  scintillator cells
 275
 276
 277   partubs[0]      =  r0;
 278   partubs[1]      =  r5;
 279   partubs[2]      =  fThickness/2.0;
 280   partubs[3]      =  90.0-15.0;
 281   partubs[4]      = 120.0-15.0;
 282
 283   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 284
 285
 286 // Elementary cell of ring 1 :
 287 // (the cells will be shifted by 3 mm to output fibers)
 288
 289   Float_t   offset_fibers =  0.3;
 290   Float_t   offset        =  -fThickness/2.0 + 0.1;
 291   Float_t   r1            =  r0 + height1;
 292
 293   partubs[0]     =  r0;
 294   partubs[1]     =  r1;
 295   partubs[2]     =  fThickness1/2.0;
 296
 297   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 298   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , 0.0, 0,"ONLY");
 299
 300 // Elementary cell of ring 2 :
 301
 302   Float_t   r2   =  r1 + height2;
 303
 304   partubs[0]     =  r1;
 305   partubs[1]     =  r2;
 306
 307   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 308   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , offset_fibers, 0,"ONLY");
 309
 310
 311 // Elementary cell of ring 3 :
 312
 313   Float_t   r3   =  r2 + height3;
 314
 315   partubs[0]     =  r2;
 316   partubs[1]     =  r3;
 317
 318   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 319   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 ,  2.0 * offset_fibers, 0,"ONLY");
 320
 321 // Elementary cell of ring 4 :
 322
 323   Float_t   r4   =  r3 + height4 ;
 324
 325   partubs[0]     =  r3;
 326   partubs[1]     =  r4;
 327
 328   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 329   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  3.0 * offset_fibers, 0,"ONLY");
 330
 331 // Elementary cells of ring 5 :
 332
 333   partubs[0]     =  r4;
 334   partubs[1]     =  r5;
 335   partubs[3]     =  90.0-15.0;
 336   partubs[4]     = 120.0-30.0;
 337
 338
 339   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 340   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , 4.0 * offset_fibers, 0,"ONLY");
 341
 342
 343   partubs[3]     = 120.0-30.0;
 344   partubs[4]     = 120.0-15.0;
 345
 346
 347   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 348   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  4.0 * offset_fibers, 0,"ONLY");
 349
 350
 351   Float_t  phi_deg = 180./6.;
 352
 353 // Right part :
 354
 355   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 356       {
 357         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 358         gMC->Gspos("V0R0",n_detec_R,"V0RI",0.0,
 359                           0.0,offset + half_thick_qua,idrotm[902],"ONLY");
 360         n_detec_R++;
 361        }
 362
 363
 364   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,zdet,0,"ONLY");
 365
 366   n_cells_R = (n_detec_R - 1) * 5;
 367   printf(" \n\n\n");
 368   printf("    Number of cells on Right side =   %d\n",  n_cells_R);
 369
 370 // Left part :
 371
 372   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 373       {
 374         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 375         gMC->Gspos("V0L0",n_detec_L,"V0LE",0.0,
 376                           0.0,0.0,idrotm[902],"ONLY");
 377         n_detec_L++;
 378        }
 379
 380
 381   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,-350.0-fThickness1/2.0,0,"ONLY");
 382
 383   n_cells_L = (n_detec_L - 1) * 5;
 384   printf(" \n\n\n");
 385   printf("    Number of cells on Left side  =   %d\n\n",  n_cells_L);
 386
 387
 388 }
 389
 390
 391
 392 //_____________________________________________________________________________
 393 void AliVZEROv2::BuildGeometry()
 394 {
 395
 396 // Builds simple ROOT TNode geometry for event display
 397
 398
 399   Int_t i;
 400
 401   printf("\n");
 402   for(i=0;i<30;i++) printf("*");
 403   printf(" VZERO BuildGeometry ");
 404   for(i=0;i<30;i++) printf("*");
 405   printf("\n");
 406
 407   TNode *Top;
 408
 409   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 410   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 411   TNode *V0Lnode, *V0Lnode0;
 412   TNode *V0Lnode1, *V0Lnode2, *V0Lnode3, *V0Lnode4, *V0Lnode5, *V0Lnode6;
 413
 414   const int kColorVZERO  = kGreen;
 415
 416   Top = gAlice->GetGeometry()->GetNode("alice");
 417
 418   Float_t  height1, height2, height3, height4, height5;
 419   Float_t  height;
 420   Float_t  theta;
 421
 422   Float_t  half_thick_qua;
 423   Float_t  zdet;
 424   Float_t  r0, r5;
 425   Float_t  pi = TMath::Pi();
 426
 427
 428   height1           =     2.0;           // height of cell 1, in cm
 429   height2           =     3.2;           // height of cell 2, in cm
 430   height3           =     4.9;           // height of cell 3, in cm
 431   height4           =     7.5;           // height of cell 4, in cm
 432   height5           =    12.0;           // height of cell 5, in cm
 433
 434   theta             =    pi/6.0/2.0;
 435
 436   half_thick_qua    =    fThickness1/2.0;
 437
 438   zdet              =    86.9 +fThickness/2.0;
 439   r0                =    4.0;
 440   height            =    height1 + height2 + height3 + height4 + height5;
 441   r5                =    r0 + height;
 442
 443   Int_t     ndiv    =     1;
 444
 445   Float_t   partube[3];
 446
 447   partube[0] =  r0 - 0.2;
 448   partube[1] =  r5 + 1.0;
 449   partube[2] = fThickness/2.0;
 450
 451   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 452
 453   Top->cd();
 454
 455   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
 456
 457   V0Rnode->SetLineColor(kBlue);
 458   fNodes->Add(V0Rnode);
 459
 460   V0Rnode->SetVisibility(2);
 461
 462
 463 // Rondelles de carbone (epaisseur 1 mm) de maintien des cellules ...
 464
 465
 466   partube[0] =   r0;
 467   partube[1] =   r5;
 468   partube[2] =   +0.1/2.0;
 469
 470   TTUBE  *V0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 471
 472   V0Rnode->cd();
 473   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 474   V0Rnode6->SetLineColor(kYellow);
 475   fNodes->Add(V0Rnode6);
 476   V0Rnode->cd();
 477   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 478   V0Rnode7->SetLineColor(kYellow);
 479   fNodes->Add(V0Rnode7);
 480
 481   partube[0] =   r0 - 0.2;
 482   partube[1] =   r0;
 483   partube[2] =   +fThickness/2.0;
 484
 485   TTUBE *V0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 486
 487
 488   V0Rnode->cd();
 489   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 490   V0Rnode8->SetLineColor(kYellow);
 491   fNodes->Add(V0Rnode8);
 492
 493   partube[0] =   r5;
 494   partube[1] =   r5 + 1.0;
 495   partube[2] =   +fThickness/2.0;
 496
 497   TTUBE  *V0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 498
 499   V0Rnode->cd();
 500   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 501   V0Rnode9->SetLineColor(kYellow);
 502   fNodes->Add(V0Rnode9);
 503
 504   Float_t   partubs[5];
 505
 506   partubs[0]      =  r0;
 507   partubs[1]      =  r5;
 508   partubs[2]      =  fThickness/2.0;
 509   partubs[3]      =  90.0-15.0;
 510   partubs[4]      = 120.0-15.0;
 511
 512
 513   TTUBS  *V0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 514                                                   partubs[3], partubs[4]);
 515
 516   V0R0->SetNumberOfDivisions(ndiv);
 517   V0R0->SetLineColor(7);
 518
 519   Float_t   r1     =  r0 + height1;
 520   Float_t   offset = - fThickness/2.0 + 0.1;
 521   Float_t   offset_fibers = 0.3;
 522
 523   partubs[0]     =  r0;
 524   partubs[1]     =  r1;
 525   partubs[2]     =  fThickness1/2.0;
 526
 527   TTUBS *V0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 528                                                   partubs[3], partubs[4]);
 529
 530   V0R1->SetNumberOfDivisions(ndiv);
 531
 532   Float_t   r2   =  r1 + height2;
 533
 534
 535   partubs[0]     =  r1;
 536   partubs[1]     =  r2;
 537
 538   TTUBS *V0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 539                                                   partubs[3], partubs[4]);
 540
 541   V0R2->SetNumberOfDivisions(ndiv);
 542
 543   Float_t   r3   =  r2 + height3;
 544
 545
 546   partubs[0]     =  r2;
 547   partubs[1]     =  r3;
 548
 549   TTUBS *V0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 550                                                   partubs[3], partubs[4]);
 551   V0R3->SetNumberOfDivisions(ndiv);
 552
 553   Float_t   r4   =  r3 + height4;
 554
 555   partubs[0]     =  r3;
 556   partubs[1]     =  r4;
 557
 558   TTUBS *V0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 559                                                   partubs[3], partubs[4]);
 560
 561   V0R4->SetNumberOfDivisions(ndiv);
 562
 563   partubs[0]     =  r4;
 564   partubs[1]     =  r5;
 565   partubs[3]     =  90.0-15.0;
 566   partubs[4]     = 120.0-30.0;
 567
 568   TTUBS *V0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 569                                                   partubs[3], partubs[4]);
 570
 571
 572   V0R5->SetNumberOfDivisions(ndiv);
 573
 574   partubs[3]     = 120.0-30.0;
 575   partubs[4]     = 120.0-15.0;
 576
 577   TTUBS *V0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 578                                                   partubs[3], partubs[4]);
 579
 580
 581   V0R6->SetNumberOfDivisions(ndiv);
 582
 583
 584   Float_t  phi;
 585   Float_t  phi_deg= 180./6.;
 586
 587
 588   Int_t    n_detec_R = 1;
 589
 590   char     NameNode[12];
 591
 592
 593   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 594
 595   {
 596
 597     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 598
 599
 600     sprintf(NameNode,"SUBDER%d",n_detec_R);
 601
 602     V0Rnode->cd();
 603     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,0.0,0.0, offset + half_thick_qua,mat920);
 604     V0Rnode0->SetLineColor(kColorVZERO);
 605     fNodes->Add(V0Rnode0);
 606     n_detec_R++;
 607
 608     sprintf(NameNode,"SUBDER%d",n_detec_R);
 609     V0Rnode0->cd();
 610     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,0.0, 0.0,0);
 611     V0Rnode1->SetLineColor(kColorVZERO);
 612     fNodes->Add(V0Rnode1);
 613     n_detec_R++;
 614
 615     sprintf(NameNode,"SUBDER%d",n_detec_R);
 616     V0Rnode0->cd();
 617     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,0.0, offset_fibers,0);
 618     V0Rnode2->SetLineColor(kColorVZERO);
 619     fNodes->Add(V0Rnode2);
 620     n_detec_R++;
 621
 622
 623     sprintf(NameNode,"SUBDER%d",n_detec_R);
 624     V0Rnode0->cd();
 625     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,0.0, 2.0*offset_fibers,0);
 626     V0Rnode3->SetLineColor(kColorVZERO);
 627     fNodes->Add(V0Rnode3);
 628     n_detec_R++;
 629
 630     sprintf(NameNode,"SUBDER%d",n_detec_R);
 631     V0Rnode0->cd();
 632     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,0.0, 3.0*offset_fibers,0);
 633     V0Rnode4->SetLineColor(kColorVZERO);
 634     fNodes->Add(V0Rnode4);
 635     n_detec_R++;
 636
 637     sprintf(NameNode,"SUBDER%d",n_detec_R);
 638     V0Rnode0->cd();
 639     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,0.0, 4.0*offset_fibers,0);
 640     V0Rnode5->SetLineColor(kColorVZERO);
 641     fNodes->Add(V0Rnode5);
 642     n_detec_R++;
 643
 644     sprintf(NameNode,"SUBDER%d",n_detec_R);
 645     V0Rnode0->cd();
 646     V0Rnode6 = new TNode(NameNode,NameNode,V0R6,0.0,0.0, 4.0*offset_fibers,0);
 647     V0Rnode6->SetLineColor(kColorVZERO);
 648     fNodes->Add(V0Rnode6);
 649     n_detec_R++;
 650
 651     V0Rnode0->SetVisibility(2);
 652
 653   }
 654
 655
 656
 657 // Left side of VZERO :
 658
 659
 660   Float_t   r0_left      =   4.3;
 661   Float_t   height1_left =   2.6;
 662   Float_t   height2_left =   4.1;
 663   Float_t   height3_left =   6.4;
 664   Float_t   height4_left =  10.2;
 665   Float_t   height5_left =  16.9;
 666   Float_t   height_left  = height1_left + height2_left + height3_left
 667                                         + height4_left + height5_left;
 668   Float_t   r5_left      = r0_left  + height_left;
 669
 670   partube[0] =  r0_left;
 671   partube[1] =  r5_left;
 672   partube[2] =  fThickness1/2.0;
 673
 674   TTUBE *V0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 675
 676   Top->cd();
 677
 678   V0Lnode = new TNode("V0LE","V0LE",V0LE,0.0,0.0,-350.0-fThickness1/2.0,0);
 679
 680   V0Lnode->SetLineColor(kBlue);
 681   fNodes->Add(V0Lnode);
 682
 683   V0Lnode->SetVisibility(2);
 684
 685   partubs[0]      =  r0_left;
 686   partubs[1]      =  r5_left;
 687   partubs[2]      =  fThickness1/2.0;
 688   partubs[3]      =  90.0-15.0;
 689   partubs[4]      = 120.0-15.0;
 690
 691   TTUBS *V0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 692                                                   partubs[3], partubs[4]);
 693
 694   V0L0->SetNumberOfDivisions(ndiv);
 695   V0L0->SetLineColor(7);
 696
 697   Float_t   offset_left;
 698   offset_left    = - fThickness1/2.0;
 699
 700   Float_t   r1_left =  r0_left + height1_left;
 701
 702   partubs[0]     =  r0_left;
 703   partubs[1]     =  r1_left;
 704
 705   TTUBS *V0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 706                                                   partubs[3], partubs[4]);
 707
 708   V0L1->SetNumberOfDivisions(ndiv);
 709
 710   Float_t   r2_left =  r1_left + height2_left;
 711
 712   partubs[0]     =  r1_left;
 713   partubs[1]     =  r2_left;
 714
 715   TTUBS *V0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 716                                                   partubs[3], partubs[4]);
 717
 718   V0L2->SetNumberOfDivisions(ndiv);
 719
 720   Float_t   r3_left  =  r2_left + height3_left;
 721
 722   partubs[0]     =  r2_left;
 723   partubs[1]     =  r3_left;
 724
 725   TTUBS *V0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 726                                                   partubs[3], partubs[4]);
 727   V0L3->SetNumberOfDivisions(ndiv);
 728
 729   Float_t   r4_left  =   r3_left + height4_left;
 730
 731   partubs[0]     =  r3_left;
 732   partubs[1]     =  r4_left;
 733
 734   TTUBS *V0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 735                                                   partubs[3], partubs[4]);
 736
 737   V0L4->SetNumberOfDivisions(ndiv);
 738
 739   partubs[0]     =  r4_left;
 740   partubs[1]     =  r5_left;
 741   partubs[3]     =  90.0-15.0;
 742   partubs[4]     = 120.0-30.0;
 743
 744   TTUBS *V0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 745                                                   partubs[3], partubs[4]);
 746
 747
 748   V0L5->SetNumberOfDivisions(ndiv);
 749
 750   partubs[3]     = 120.0-30.0;
 751   partubs[4]     = 120.0-15.0;
 752
 753   TTUBS *V0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 754                                                   partubs[3], partubs[4]);
 755
 756
 757   V0L6->SetNumberOfDivisions(ndiv);
 758
 759   Int_t    n_detec_L   = 1;
 760
 761
 762   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 763
 764   {
 765
 766     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 767
 768
 769     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 770
 771     V0Lnode->cd();
 772     V0Lnode0 = new TNode(NameNode,NameNode,V0L0,0.0,0.0, offset_left + half_thick_qua,mat920);
 773     V0Lnode0->SetLineColor(kColorVZERO);
 774     fNodes->Add(V0Lnode0);
 775     n_detec_L++;
 776
 777     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 778     V0Lnode0->cd();
 779     V0Lnode1 = new TNode(NameNode,NameNode,V0L1,0.0,0.0, 0.0,0);
 780     V0Lnode1->SetLineColor(kColorVZERO);
 781     fNodes->Add(V0Lnode1);
 782     n_detec_L++;
 783
 784     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 785     V0Lnode0->cd();
 786     V0Lnode2 = new TNode(NameNode,NameNode,V0L2,0.0,0.0, 0.0,0);
 787     V0Lnode2->SetLineColor(kColorVZERO);
 788     fNodes->Add(V0Lnode2);
 789     n_detec_L++;
 790
 791
 792     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 793     V0Lnode0->cd();
 794     V0Lnode3 = new TNode(NameNode,NameNode,V0L3,0.0,0.0, 0.0,0);
 795     V0Lnode3->SetLineColor(kColorVZERO);
 796     fNodes->Add(V0Lnode3);
 797     n_detec_L++;
 798
 799     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 800     V0Lnode0->cd();
 801     V0Lnode4 = new TNode(NameNode,NameNode,V0L4,0.0,0.0, 0.0,0);
 802     V0Lnode4->SetLineColor(kColorVZERO);
 803     fNodes->Add(V0Lnode4);
 804     n_detec_L++;
 805
 806     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 807     V0Lnode0->cd();
 808     V0Lnode5 = new TNode(NameNode,NameNode,V0L5,0.0,0.0, 0.0,0);
 809     V0Lnode5->SetLineColor(kColorVZERO);
 810     fNodes->Add(V0Lnode5);
 811     n_detec_L++;
 812
 813     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 814     V0Lnode0->cd();
 815     V0Lnode6 = new TNode(NameNode,NameNode,V0L6,0.0,0.0, 0.0,0);
 816     V0Lnode6->SetLineColor(kColorVZERO);
 817     fNodes->Add(V0Lnode6);
 818     n_detec_L++;
 819
 820     V0Lnode0->SetVisibility(2);
 821
 822   }
 823
 824
 825 }
 826
 827
 828 //------------------------------------------------------------------------
 829 void AliVZEROv2::CreateMaterials()
 830 {
 831     Int_t i;
 832
 833     printf("\n");
 834     for(i=0;i<30;i++) printf("*");
 835     printf(" VZERO create materials ");
 836     for(i=0;i<30;i++) printf("*");
 837     printf("\n");
 838
 839 /*
 840     Float_t ppckov[14] = { 5.5e-9, 5.7e-9, 5.9e-9, 6.1e-9, 6.3e-9, 6.5e-9, 6.7e-9,
 841                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 842
 843
 844     Float_t ppckov_alu[14] = { 5.5e-9, 5.7e-9, 5.9e-9, 6.1e-9, 6.3e-9, 6.5e-9, 6.7e-9,
 845                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 846
 847     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 848                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 849                                  1.662295, 1.68337 };
 850
 851     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 852                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 853
 854     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 855
 856
 857     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 858
 859
 860     Float_t absco_alu[14]  = { 1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,
 861                                1e-4,1e-4,1e-4,1e-4 };
 862     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 863
 864 */
 865
 866     Int_t *idtmed = fIdtmed->GetArray()-2999;
 867
 868 //    TGeant3 *geant3 = (TGeant3*) gMC;
 869
 870 //  Parameters related to Quarz (SiO2) :
 871
 872     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 873     Int_t nlmatqua;
 874
 875     aqua[0]    = 28.09;
 876     aqua[1]    = 16.;
 877     zqua[0]    = 14.;
 878     zqua[1]    = 8.;
 879     densqua    = 2.64;
 880     nlmatqua   = -2;
 881     wmatqua[0] = 1.;
 882     wmatqua[1] = 2.;
 883
 884 // Parameters  related to aluminum sheets :
 885
 886     Float_t  aal   = 26.98;
 887     Float_t  zal   = 13.00;
 888     Float_t  densal=   2.7;
 889     Float_t  radlal=   8.9;
 890
 891 // Parameters  related to scintillator CH :
 892
 893     Float_t ascin[2] = {1.00794,12.011};
 894     Float_t zscin[2] = {1.,6.};
 895     Float_t wscin[2] = {1.,1.};
 896     Float_t denscin  = 1.032;
 897
 898 //  Definition of materials :
 899
 900     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 901     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 902     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 903     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 904     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 905     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 906
 907     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 908
 909
 910     Int_t   ISXFLD = gAlice->Field()->Integ();
 911     Float_t SXMGMX = gAlice->Field()->Max();
 912
 913     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 914
 915     tmaxfd = 10.;
 916     stemax = 0.1;
 917     deemax = 0.1;
 918     epsil  = 0.001;
 919     stmin  = 0.001;
 920
 921 //  Active Air :
 922     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX,
 923               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 924
 925 //  Inactive air :
 926
 927     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX,
 928               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 929
 930     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX,
 931               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 932
 933     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX,
 934               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 935
 936     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX,
 937               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 938
 939
 940     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX,
 941               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 942
 943     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 944
 945     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 946     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 947     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 948     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 949
 950     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 951     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 952     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 953     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 954
 955     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 956     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 957     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 958     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 959     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 960     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 961
 962     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 963     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 964     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 965     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 966
 967     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 968     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 969     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 970     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 971     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 972     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 973
 974     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 975     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 976     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 977     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 978     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 979     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 980
 981
 982 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 983 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 984
 985 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 986 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 987
 988
 989 }
 990 //---------------------------------------------------------------------
 991 void AliVZEROv2::DrawModule()
 992 {
 993
 994 //  Drawing is done in DrawVZERO.C
 995
 996    Int_t i;
 997
 998    printf("\n");
 999    for(i=0;i<30;i++) printf("*");
1000    printf(" VZERO DrawModule ");
1001    for(i=0;i<30;i++) printf("*");
1002    printf("\n");
1003
1004
1005 }
1006
1007 //-------------------------------------------------------------------
1008 void AliVZEROv2::Init()
1009 {
1010 // Initialises version 1 of the VZERO Detector
1011 // Just prints an information message
1012
1013    printf(" VZERO version %d initialized \n",IsVersion());
1014
1015 //   gMC->SetMaxStep(fMaxStepAlu);
1016 //   gMC->SetMaxStep(fMaxStepQua);
1017
1018     AliVZERO::Init();
1019
1020 }
1021
1022 //-------------------------------------------------------------------
1023
1024 void AliVZEROv2::StepManager()
1025 {
1026
1027      Int_t     copy;
1028      static    Int_t   vol[4];
1029      static    Float_t hits[16];
1030      static    Float_t eloss, tlength;
1031
1032      TLorentzVector pos;
1033      TLorentzVector mom;
1034
1035      Float_t        theta;
1036      Float_t        phi;
1037      Float_t        kRaddeg = 180/TMath::Pi();
1038      Float_t        RingNumber;
1039
1040      Int_t          ipart;
1041      Float_t        destep, step;
1042
1043
1044 //   We keep only charged tracks :
1045
1046      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
1047
1048
1049      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
1050      vol[2]    = gMC->CurrentVolID(copy);
1051      vol[3]    = copy;
1052
1053
1054      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
1055                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
1056                RingNumber = 1.0;
1057      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1058                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1059                RingNumber = 2.0;
1060      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1061                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1062                RingNumber = 3.0;
1063      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1064                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1065                RingNumber = 4.0;
1066      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1067                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1068                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1069                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )
1070                RingNumber = 5.0;
1071      else
1072                RingNumber = 0.0;
1073
1074      if  (  RingNumber > 0.5  ) {
1075
1076         destep    = gMC->Edep();
1077         step      = gMC->TrackStep();
1078         eloss    += destep;
1079         tlength  += step;
1080
1081
1082         if  ( gMC->IsTrackEntering()  )  {
1083
1084             gMC->TrackPosition(pos);
1085
1086             gMC->TrackMomentum(mom);
1087             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1088             Double_t Pt   = TMath::Sqrt(tc);
1089             Double_t Pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1090             theta   = Float_t(TMath::ATan2(Pt,Double_t(mom[2])))*kRaddeg;
1091             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1092
1093             ipart  = gMC->TrackPid();
1094
1095             hits[0]  = pos[0];
1096             hits[1]  = pos[1];
1097             hits[2]  = pos[2];
1098             hits[3]  =  ipart;
1099
1100             hits[4]  = gMC->TrackTime();
1101             hits[5]  = gMC->TrackCharge();
1102             hits[6]  = theta;
1103             hits[7]  = phi;
1104             hits[8]  = RingNumber;
1105
1106             hits[9]  = Pt;
1107             hits[10] = Pmom;
1108             hits[11] = mom[0];
1109             hits[12] = mom[1];
1110             hits[13] = mom[2];
1111
1112             tlength  = 0.0;
1113             eloss    = 0.0;
1114
1115          }
1116
1117          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1118
1119          hits[14] =   eloss;
1120          hits[15] = tlength;
1121
1122          AddHit(gAlice->CurrentTrack(), vol, hits);
1123
1124          tlength  = 0.0;
1125          eloss    = 0.0;
1126
1127
1128          }
1129     }
1130
1131 }
1132
1133 //_____________________________________________________________________________
1134 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1135 {
1136
1137   //  Add a VZERO hit
1138
1139
1140   TClonesArray &lhits = *fHits;
1141   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1142 }
1143
1144 //---------------------------------------------------------------------
1145 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
1146 {
1147
1148    TClonesArray  &ldigits = *fDigits;
1149    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1150 }
1151
1152 //---------------------------------------------------------------------
1153 void AliVZEROv2::MakeBranch(Option_t *option)
1154 {
1155
1156   // Creates new branches in the current Root Tree
1157
1158
1159   char branchname[10];
1160   sprintf(branchname,"%s",GetName());
1161   printf(" fBufferSize = %d \n",fBufferSize);
1162
1163   const char *H = strstr(option,"H");
1164
1165   if (fHits   && gAlice->TreeH() && H) {
1166     gAlice->TreeH()->Branch(branchname,&fHits, fBufferSize);
1167     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1168   }
1169
1170   const char *D = strstr(option,"D");
1171   //
1172   if (fDigits   && gAlice->TreeD() && D) {
1173     gAlice->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1174     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1175   }
1176
1177 }