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