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 /* $Id$ */
  17
  18 //////////////////////////////////////////////////////////////////////
  19 //                                                                  //
  20 //  (V-zero) detector  version 2  as designed by the Lyon group     //
  21 //   All comments should be sent to Brigitte CHEYNIS :              //
  22 //                                  b.cheynis@ipnl.in2p3.fr         //
  23 //   Geometry of the  4th of november 2002                          //
  24 //  (circular instead of trapezoidal shapes as in previous versions //
  25 //   plus changes in cell dimensions and offsets)                   //
  26 //                                                                  //
  27 //////////////////////////////////////////////////////////////////////
  28
  29 #include <Riostream.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <TBRIK.h>
  34 #include <TBox.h>
  35 #include <TCONE.h>
  36 #include <TClonesArray.h>
  37 #include <TGeant3.h>
  38 #include <TGeometry.h>
  39 #include <TH1.h>
  40 #include <TLorentzVector.h>
  41 #include <TMath.h>
  42 #include <TNode.h>
  43 #include <TObjectTable.h>
  44 #include <TPCON.h>
  45 #include <TPGON.h>
  46 #include <TSPHE.h>
  47 #include <TShape.h>
  48 #include <TTRAP.h>
  49 #include <TTRD2.h>
  50 #include <TTUBE.h>
  51 #include <TTUBS.h>
  52 #include <TVirtualMC.h>
  53 #include <TParticle.h>
  54
  55 #include "AliLoader.h"
  56 #include "AliMagF.h"
  57 #include "AliRun.h"
  58 #include "AliVZEROdigit.h"
  59 #include "AliVZEROhit.h"
  60 #include "AliVZEROv2.h"
  61
  62 ClassImp(AliVZEROv2)
  63
  64 //--------------------------------------------------------------------
  65 AliVZEROv2:: AliVZEROv2():AliVZERO()
  66 {
  67
  68 }
  69 //--------------------------------------------------------------------
  70 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  71  AliVZERO(name,title)
  72 {
  73
  74 // Standard constructor for V-zeroR Detector (right part)  version 0
  75
  76   Int_t i;
  77
  78   printf("\n");
  79   for(i=0;i<26;i++) printf("*");
  80   printf(" Create VZERO object ");
  81   for(i=0;i<26;i++) printf("*");
  82   printf("\n");
  83
  84 }
  85
  86 //-------------------------------------------------------------------------
  87 void AliVZEROv2::CreateGeometry()
  88 {
  89
  90 // Creates the GEANT geometry of the V-zero Detector  version 2
  91
  92   Int_t i;
  93
  94   printf("\n");
  95   for(i=0;i<26;i++) printf("*");
  96   printf(" Create VZERO Geometry ");
  97   for(i=0;i<26;i++) printf("*");
  98   printf("\n");
  99
 100   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 101
 102   Int_t    n_detec_R = 1;
 103   Int_t    n_detec_L = 1;
 104
 105   Int_t    n_cells_R = 1;
 106   Int_t    n_cells_L = 1;
 107
 108   Int_t    idrotm[999];
 109
 110   Float_t  height1, height2, height3, height4, height5;
 111   Float_t  height;
 112   Float_t  theta;
 113
 114   Float_t  half_thick_qua;
 115
 116   Float_t  zdet;
 117   Float_t  r0, r5;
 118   Float_t  pi = TMath::Pi();
 119
 120   height1           =     1.82;           // height of cell 1, in cm
 121   height2           =     3.81;           // height of cell 2, in cm
 122   height3           =     4.72;           // height of cell 3, in cm
 123   height4           =     7.12;           // height of cell 4, in cm
 124   height5           =    10.83;           // height of cell 5, in cm
 125
 126   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
 127
 128   half_thick_qua    = fThickness1/2.0;   // half thickness of elementary cell (inner ring)
 129
 130   zdet              =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
 131   r0                =    4.05;            // closest distance to center of the beam pipe
 132   height            =    height1 + height2 + height3 + height4 + height5;
 133   r5                =    r0 + height;
 134
 135 // Creation of mother volume V0LE - left part - :
 136 // Entrance face at  -350.0 cm ...
 137
 138    Float_t   partube[3];
 139
 140    partube[0] =  4.3;
 141    partube[1] = 45.0;
 142    partube[2] = fThickness1/2.0;
 143
 144    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 145
 146 // Creation of five rings - left part - :
 147 // Entrance face at -350.0 cm ...
 148
 149 // Mother volume V0L0 in which will be set 5 scintillator cells
 150
 151   Float_t   partubs[5];
 152
 153   Float_t   r0_left      =   4.3;
 154   Float_t   height1_left =   2.6;
 155   Float_t   height2_left =   4.1;
 156   Float_t   height3_left =   6.4;
 157   Float_t   height4_left =  10.2;
 158   Float_t   height5_left =  16.9;
 159   Float_t   height_left  = height1_left + height2_left + height3_left
 160                                         + height4_left + height5_left;
 161   Float_t   r5_left      = r0_left  + height_left;
 162
 163   partubs[0]      =  r0_left;
 164   partubs[1]      =  r5_left;
 165   partubs[2]      =  fThickness1/2.0;
 166   partubs[3]      =  90.0-15.0;
 167   partubs[4]      = 120.0-15.0;
 168
 169   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 170
 171   Float_t  r1_left =  r0_left + height1_left;
 172
 173   partubs[0]     =  r0_left;
 174   partubs[1]     =  r1_left;
 175
 176   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 177   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 178
 179   Float_t   r2_left  =   r1_left + height2_left;
 180
 181   partubs[0]     =  r1_left;
 182   partubs[1]     =  r2_left;
 183
 184   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 185   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 186
 187   Float_t   r3_left =   r2_left + height3_left;
 188
 189   partubs[0]     =  r2_left;
 190   partubs[1]     =  r3_left;
 191
 192   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 193   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 194
 195   Float_t   r4_left =  r3_left + height4_left;
 196
 197   partubs[0]     =  r3_left;
 198   partubs[1]     =  r4_left;
 199
 200   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 201   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 202
 203   partubs[0]     =  r4_left;
 204   partubs[1]     =  r5_left;
 205   partubs[3]     =  90.0-15.0;
 206   partubs[4]     = 120.0-30.0;
 207
 208   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 209   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 210
 211   partubs[3]     = 120.0-30.0;
 212   partubs[4]     = 120.0-15.0;
 213
 214   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 215   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 216
 217
 218 // Creation of mother volume V0RI - right part - :
 219
 220   partube[0] = r0 - 0.2;
 221   partube[1] = r5 + 1.0;
 222   partube[2] = fThickness/2.0;
 223
 224   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 225
 226 // Creation of  carbon lids (3 mm thick) to keep V0RI box shut...
 227
 228   partube[0] =   r0;
 229   partube[1] =   r5;
 230   partube[2] =   +0.3/2.0;
 231
 232   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 233   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 234   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 235
 236 // Creation of aluminum rings to maintain the V0RI pieces ...
 237
 238   partube[0] =   r0 - 0.2;
 239   partube[1] =   r0;
 240   partube[2] =   +fThickness/2.0;
 241
 242   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 243   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 244
 245   partube[0] =   r5;
 246   partube[1] =   r5 + 1.0;
 247   partube[2] =   +fThickness/2.0;
 248
 249   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 250   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 251
 252 // Mother volume V0R0 in which will be set 5  scintillator cells
 253
 254   partubs[0]      =  r0;
 255   partubs[1]      =  r5;
 256   partubs[2]      =  fThickness/2.0;
 257   partubs[3]      =  90.0-15.0;
 258   partubs[4]      = 120.0-15.0;
 259
 260   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 261
 262 // Elementary cell of ring 1 :
 263 // (the cells will be shifted by 3 mm to output fibers)
 264
 265   Float_t   offset_fibers =  0.7;
 266   Float_t   offset        =  fThickness/2.0 - 0.3 - fThickness1/2.0;
 267   Float_t   r1            =  r0 + height1;
 268
 269   partubs[0]     =  r0;
 270   partubs[1]     =  r1;
 271   partubs[2]     =  fThickness1/2.0;
 272
 273   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 274   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , offset, 0,"ONLY");
 275
 276 // Elementary cell of ring 2 :
 277
 278   Float_t   r2   =  r1 + height2;
 279
 280   partubs[0]     =  r1;
 281   partubs[1]     =  r2;
 282
 283   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 284   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , offset - offset_fibers, 0,"ONLY");
 285
 286
 287 // Elementary cell of ring 3 :
 288
 289   Float_t   r3   =  r2 + height3;
 290
 291   partubs[0]     =  r2;
 292   partubs[1]     =  r3;
 293
 294   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 295   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , offset -  2.0 * offset_fibers, 0,"ONLY");
 296
 297 // Elementary cell of ring 4 :
 298
 299   Float_t   r4   =  r3 + height4 ;
 300
 301   partubs[0]     =  r3;
 302   partubs[1]     =  r4;
 303
 304   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 305   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  offset - 3.0 * offset_fibers, 0,"ONLY");
 306
 307 // Elementary cells of ring 5 :
 308
 309   partubs[0]     =  r4;
 310   partubs[1]     =  r5;
 311   partubs[3]     =  90.0-15.0;
 312   partubs[4]     = 120.0-30.0;
 313
 314   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 315   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , offset - 4.0 * offset_fibers, 0,"ONLY");
 316
 317   partubs[3]     = 120.0-30.0;
 318   partubs[4]     = 120.0-15.0;
 319
 320   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 321   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  offset - 4.0 * offset_fibers, 0,"ONLY");
 322
 323   Float_t  phi_deg = 180./6.;
 324
 325 // Right part :
 326
 327   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 328       {
 329         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 330         gMC->Gspos("V0R0",n_detec_R,"V0RI",0.0,
 331                           0.0,0.0,idrotm[902],"ONLY");
 332         n_detec_R++;
 333        }
 334
 335   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,zdet,0,"ONLY");
 336
 337   n_cells_R = (n_detec_R - 1) * 6;
 338   printf("    Number of cells on Right side =   %d\n",  n_cells_R);
 339
 340 // Left part :
 341
 342   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 343       {
 344         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 345         gMC->Gspos("V0L0",n_detec_L,"V0LE",0.0,
 346                           0.0,0.0,idrotm[902],"ONLY");
 347         n_detec_L++;
 348        }
 349
 350   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,-350.0-fThickness1/2.0,0,"ONLY");
 351
 352   n_cells_L = (n_detec_L - 1) * 6;
 353   printf("    Number of cells on Left side  =   %d\n",  n_cells_L);
 354   for(i=0;i<75;i++) printf("*");
 355   printf("\n");
 356
 357 }
 358
 359 //_____________________________________________________________________________
 360 void AliVZEROv2::BuildGeometry()
 361 {
 362
 363 // Builds simple ROOT TNode geometry for event display
 364
 365   Int_t i;
 366
 367   printf("\n");
 368   for(i=0;i<30;i++) printf("*");
 369   printf(" VZERO BuildGeometry ");
 370   for(i=0;i<30;i++) printf("*");
 371   printf("\n");
 372
 373   TNode *Top;
 374
 375   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 376   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 377   TNode *V0Lnode, *V0Lnode0;
 378   TNode *V0Lnode1, *V0Lnode2, *V0Lnode3, *V0Lnode4, *V0Lnode5, *V0Lnode6;
 379
 380   const int kColorVZERO  = kGreen;
 381
 382   Top = gAlice->GetGeometry()->GetNode("alice");
 383
 384   Float_t  height1, height2, height3, height4, height5;
 385   Float_t  height;
 386   Float_t  theta;
 387
 388   Float_t  half_thick_qua;
 389   Float_t  zdet;
 390   Float_t  r0, r5;
 391   Float_t  pi = TMath::Pi();
 392
 393   height1           =     1.82;           // height of cell 1, in cm
 394   height2           =     3.81;           // height of cell 2, in cm
 395   height3           =     4.72;           // height of cell 3, in cm
 396   height4           =     7.12;           // height of cell 4, in cm
 397   height5           =    10.83;           // height of cell 5, in cm
 398
 399   theta             =    pi/6.0/2.0;
 400
 401   half_thick_qua    =    fThickness1/2.0;
 402
 403   zdet              =    90.0 - 0.6 - fThickness/2.0;
 404   r0                =    4.05;
 405   height            =    height1 + height2 + height3 + height4 + height5;
 406   r5                =    r0 + height;
 407
 408   Int_t     ndiv    =     1;
 409
 410   Float_t   partube[3];
 411
 412   partube[0] =  r0 - 0.2;
 413   partube[1] =  r5 + 1.0;
 414   partube[2] = fThickness/2.0;
 415
 416   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 417
 418   Top->cd();
 419
 420   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
 421
 422   V0Rnode->SetLineColor(kYellow);
 423   fNodes->Add(V0Rnode);
 424   V0Rnode->SetVisibility(2);
 425
 426 // Rondelles de carbone (epaisseur 3 mm) de maintien des cellules ...
 427
 428   partube[0] =   r0;
 429   partube[1] =   r5;
 430   partube[2] =   +0.3/2.0;
 431
 432   TTUBE  *V0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 433
 434   V0Rnode->cd();
 435   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 436   V0Rnode6->SetLineColor(kYellow);
 437   fNodes->Add(V0Rnode6);
 438   V0Rnode->cd();
 439   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 440   V0Rnode7->SetLineColor(kYellow);
 441   fNodes->Add(V0Rnode7);
 442
 443   partube[0] =   r0 - 0.2;
 444   partube[1] =   r0;
 445   partube[2] =   +fThickness/2.0;
 446
 447   TTUBE *V0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 448
 449   V0Rnode->cd();
 450   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 451   V0Rnode8->SetLineColor(kYellow);
 452   fNodes->Add(V0Rnode8);
 453
 454   partube[0] =   r5;
 455   partube[1] =   r5 + 1.0;
 456   partube[2] =   +fThickness/2.0;
 457
 458   TTUBE  *V0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 459
 460   V0Rnode->cd();
 461   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 462   V0Rnode9->SetLineColor(kYellow);
 463   fNodes->Add(V0Rnode9);
 464
 465   Float_t   partubs[5];
 466
 467   partubs[0]      =  r0;
 468   partubs[1]      =  r5;
 469   partubs[2]      =  fThickness/2.0;
 470   partubs[3]      =  90.0-15.0;
 471   partubs[4]      = 120.0-15.0;
 472
 473   TTUBS  *V0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 474                                                   partubs[3], partubs[4]);
 475
 476   V0R0->SetNumberOfDivisions(ndiv);
 477
 478   Float_t   r1     =  r0 + height1;
 479   Float_t   offset = fThickness/2.0 - 0.3 - fThickness1/2.0;
 480   Float_t   offset_fibers = 0.7;
 481
 482   partubs[0]     =  r0;
 483   partubs[1]     =  r1;
 484   partubs[2]     =  fThickness1/2.0;
 485
 486   TTUBS *V0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 487                                                   partubs[3], partubs[4]);
 488
 489   V0R1->SetNumberOfDivisions(ndiv);
 490
 491   Float_t   r2   =  r1 + height2;
 492
 493   partubs[0]     =  r1;
 494   partubs[1]     =  r2;
 495
 496   TTUBS *V0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 497                                                   partubs[3], partubs[4]);
 498
 499   V0R2->SetNumberOfDivisions(ndiv);
 500
 501   Float_t   r3   =  r2 + height3;
 502
 503   partubs[0]     =  r2;
 504   partubs[1]     =  r3;
 505
 506   TTUBS *V0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 507                                                   partubs[3], partubs[4]);
 508   V0R3->SetNumberOfDivisions(ndiv);
 509
 510   Float_t   r4   =  r3 + height4;
 511
 512   partubs[0]     =  r3;
 513   partubs[1]     =  r4;
 514
 515   TTUBS *V0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 516                                                   partubs[3], partubs[4]);
 517
 518   V0R4->SetNumberOfDivisions(ndiv);
 519
 520   partubs[0]     =  r4;
 521   partubs[1]     =  r5;
 522   partubs[3]     =  90.0-15.0;
 523   partubs[4]     = 120.0-30.0;
 524
 525   TTUBS *V0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 526                                                   partubs[3], partubs[4]);
 527
 528   V0R5->SetNumberOfDivisions(ndiv);
 529
 530   partubs[3]     = 120.0-30.0;
 531   partubs[4]     = 120.0-15.0;
 532
 533   TTUBS *V0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 534                                                   partubs[3], partubs[4]);
 535
 536   V0R6->SetNumberOfDivisions(ndiv);
 537
 538   Float_t  phi;
 539   Float_t  phi_deg= 180./6.;
 540
 541   Int_t    n_detec_R = 1;
 542
 543   char     NameNode[12];
 544
 545   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 546
 547   {
 548
 549     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 550
 551     sprintf(NameNode,"SUBDER%d",n_detec_R);
 552
 553     V0Rnode->cd();
 554     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,0.0,0.0, 0.0,mat920);
 555     V0Rnode0->SetLineColor(kYellow);
 556     fNodes->Add(V0Rnode0);
 557     n_detec_R++;
 558
 559     sprintf(NameNode,"SUBDER%d",n_detec_R);
 560     V0Rnode0->cd();
 561     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,0.0, offset,0);
 562     V0Rnode1->SetLineColor(kColorVZERO);
 563     fNodes->Add(V0Rnode1);
 564     n_detec_R++;
 565
 566     sprintf(NameNode,"SUBDER%d",n_detec_R);
 567     V0Rnode0->cd();
 568     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,0.0, offset - offset_fibers,0);
 569     V0Rnode2->SetLineColor(kColorVZERO);
 570     fNodes->Add(V0Rnode2);
 571     n_detec_R++;
 572
 573     sprintf(NameNode,"SUBDER%d",n_detec_R);
 574     V0Rnode0->cd();
 575     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,0.0, offset - 2.0*offset_fibers,0);
 576     V0Rnode3->SetLineColor(kColorVZERO);
 577     fNodes->Add(V0Rnode3);
 578     n_detec_R++;
 579
 580     sprintf(NameNode,"SUBDER%d",n_detec_R);
 581     V0Rnode0->cd();
 582     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,0.0, offset - 3.0*offset_fibers,0);
 583     V0Rnode4->SetLineColor(kColorVZERO);
 584     fNodes->Add(V0Rnode4);
 585     n_detec_R++;
 586
 587     sprintf(NameNode,"SUBDER%d",n_detec_R);
 588     V0Rnode0->cd();
 589     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,0.0, offset - 4.0*offset_fibers,0);
 590     V0Rnode5->SetLineColor(kColorVZERO);
 591     fNodes->Add(V0Rnode5);
 592     n_detec_R++;
 593
 594     sprintf(NameNode,"SUBDER%d",n_detec_R);
 595     V0Rnode0->cd();
 596     V0Rnode6 = new TNode(NameNode,NameNode,V0R6,0.0,0.0, offset - 4.0*offset_fibers,0);
 597     V0Rnode6->SetLineColor(kColorVZERO);
 598     fNodes->Add(V0Rnode6);
 599     n_detec_R++;
 600
 601     V0Rnode0->SetVisibility(2);
 602
 603   }
 604
 605 // Left side of VZERO :
 606
 607   Float_t   r0_left      =   4.3;
 608   Float_t   height1_left =   2.6;
 609   Float_t   height2_left =   4.1;
 610   Float_t   height3_left =   6.4;
 611   Float_t   height4_left =  10.2;
 612   Float_t   height5_left =  16.9;
 613   Float_t   height_left  = height1_left + height2_left + height3_left
 614                                         + height4_left + height5_left;
 615   Float_t   r5_left      = r0_left  + height_left;
 616
 617   partube[0] =  r0_left;
 618   partube[1] =  r5_left;
 619   partube[2] =  fThickness1/2.0;
 620
 621   TTUBE *V0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 622
 623   Top->cd();
 624
 625   V0Lnode = new TNode("V0LE","V0LE",V0LE,0.0,0.0,-350.0-fThickness1/2.0,0);
 626
 627   V0Lnode->SetLineColor(kBlue);
 628   fNodes->Add(V0Lnode);
 629
 630   V0Lnode->SetVisibility(2);
 631
 632   partubs[0]      =  r0_left;
 633   partubs[1]      =  r5_left;
 634   partubs[2]      =  fThickness1/2.0;
 635   partubs[3]      =  90.0-15.0;
 636   partubs[4]      = 120.0-15.0;
 637
 638   TTUBS *V0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 639                                                   partubs[3], partubs[4]);
 640
 641   V0L0->SetNumberOfDivisions(ndiv);
 642   V0L0->SetLineColor(7);
 643
 644   Float_t   offset_left;
 645   offset_left    = - fThickness1/2.0;
 646
 647   Float_t   r1_left =  r0_left + height1_left;
 648
 649   partubs[0]     =  r0_left;
 650   partubs[1]     =  r1_left;
 651
 652   TTUBS *V0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 653                                                   partubs[3], partubs[4]);
 654
 655   V0L1->SetNumberOfDivisions(ndiv);
 656
 657   Float_t   r2_left =  r1_left + height2_left;
 658
 659   partubs[0]     =  r1_left;
 660   partubs[1]     =  r2_left;
 661
 662   TTUBS *V0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 663                                                   partubs[3], partubs[4]);
 664
 665   V0L2->SetNumberOfDivisions(ndiv);
 666
 667   Float_t   r3_left  =  r2_left + height3_left;
 668
 669   partubs[0]     =  r2_left;
 670   partubs[1]     =  r3_left;
 671
 672   TTUBS *V0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 673                                                   partubs[3], partubs[4]);
 674   V0L3->SetNumberOfDivisions(ndiv);
 675
 676   Float_t   r4_left  =   r3_left + height4_left;
 677
 678   partubs[0]     =  r3_left;
 679   partubs[1]     =  r4_left;
 680
 681   TTUBS *V0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 682                                                   partubs[3], partubs[4]);
 683
 684   V0L4->SetNumberOfDivisions(ndiv);
 685
 686   partubs[0]     =  r4_left;
 687   partubs[1]     =  r5_left;
 688   partubs[3]     =  90.0-15.0;
 689   partubs[4]     = 120.0-30.0;
 690
 691   TTUBS *V0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 692                                                   partubs[3], partubs[4]);
 693
 694
 695   V0L5->SetNumberOfDivisions(ndiv);
 696
 697   partubs[3]     = 120.0-30.0;
 698   partubs[4]     = 120.0-15.0;
 699
 700   TTUBS *V0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 701                                                   partubs[3], partubs[4]);
 702
 703   V0L6->SetNumberOfDivisions(ndiv);
 704
 705   Int_t    n_detec_L   = 1;
 706
 707   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 708
 709   {
 710
 711     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 712
 713
 714     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 715
 716     V0Lnode->cd();
 717     V0Lnode0 = new TNode(NameNode,NameNode,V0L0,0.0,0.0, offset_left + half_thick_qua,mat920);
 718     V0Lnode0->SetLineColor(kColorVZERO);
 719     fNodes->Add(V0Lnode0);
 720     n_detec_L++;
 721
 722     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 723     V0Lnode0->cd();
 724     V0Lnode1 = new TNode(NameNode,NameNode,V0L1,0.0,0.0, 0.0,0);
 725     V0Lnode1->SetLineColor(kColorVZERO);
 726     fNodes->Add(V0Lnode1);
 727     n_detec_L++;
 728
 729     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 730     V0Lnode0->cd();
 731     V0Lnode2 = new TNode(NameNode,NameNode,V0L2,0.0,0.0, 0.0,0);
 732     V0Lnode2->SetLineColor(kColorVZERO);
 733     fNodes->Add(V0Lnode2);
 734     n_detec_L++;
 735
 736
 737     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 738     V0Lnode0->cd();
 739     V0Lnode3 = new TNode(NameNode,NameNode,V0L3,0.0,0.0, 0.0,0);
 740     V0Lnode3->SetLineColor(kColorVZERO);
 741     fNodes->Add(V0Lnode3);
 742     n_detec_L++;
 743
 744     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 745     V0Lnode0->cd();
 746     V0Lnode4 = new TNode(NameNode,NameNode,V0L4,0.0,0.0, 0.0,0);
 747     V0Lnode4->SetLineColor(kColorVZERO);
 748     fNodes->Add(V0Lnode4);
 749     n_detec_L++;
 750
 751     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 752     V0Lnode0->cd();
 753     V0Lnode5 = new TNode(NameNode,NameNode,V0L5,0.0,0.0, 0.0,0);
 754     V0Lnode5->SetLineColor(kColorVZERO);
 755     fNodes->Add(V0Lnode5);
 756     n_detec_L++;
 757
 758     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 759     V0Lnode0->cd();
 760     V0Lnode6 = new TNode(NameNode,NameNode,V0L6,0.0,0.0, 0.0,0);
 761     V0Lnode6->SetLineColor(kColorVZERO);
 762     fNodes->Add(V0Lnode6);
 763     n_detec_L++;
 764
 765     V0Lnode0->SetVisibility(2);
 766
 767   }
 768
 769 }
 770
 771 //------------------------------------------------------------------------
 772 void AliVZEROv2::CreateMaterials()
 773 {
 774     Int_t i;
 775
 776     printf("\n");
 777     for(i=0;i<25;i++) printf("*");
 778     printf(" VZERO create materials ");
 779     for(i=0;i<26;i++) printf("*");
 780     printf("\n");
 781
 782 /*
 783     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,
 784                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 785
 786
 787     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,
 788                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 789
 790     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 791                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 792                                  1.662295, 1.68337 };
 793
 794     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 795                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 796
 797     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 798
 799
 800     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 801
 802
 803     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,
 804                                1e-4,1e-4,1e-4,1e-4 };
 805     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 806
 807 */
 808
 809     Int_t *idtmed = fIdtmed->GetArray()-2999;
 810
 811 //    TGeant3 *geant3 = (TGeant3*) gMC;
 812
 813 //  Parameters related to Quarz (SiO2) :
 814
 815     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 816     Int_t nlmatqua;
 817
 818     aqua[0]    = 28.09;
 819     aqua[1]    = 16.;
 820     zqua[0]    = 14.;
 821     zqua[1]    = 8.;
 822     densqua    = 2.64;
 823     nlmatqua   = -2;
 824     wmatqua[0] = 1.;
 825     wmatqua[1] = 2.;
 826
 827 // Parameters  related to aluminum sheets :
 828
 829     Float_t  aal   = 26.98;
 830     Float_t  zal   = 13.00;
 831     Float_t  densal=   2.7;
 832     Float_t  radlal=   8.9;
 833
 834 // Parameters  related to scintillator CH :
 835
 836     Float_t ascin[2] = {1.00794,12.011};
 837     Float_t zscin[2] = {1.,6.};
 838     Float_t wscin[2] = {1.,1.};
 839     Float_t denscin  = 1.032;
 840
 841 //  Definition of materials :
 842
 843     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 844     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 845     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 846     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 847     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 848     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 849
 850     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 851
 852
 853     Int_t   ISXFLD = gAlice->Field()->Integ();
 854     Float_t SXMGMX = gAlice->Field()->Max();
 855
 856     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 857
 858     tmaxfd = 10.;
 859     stemax = 0.1;
 860     deemax = 0.1;
 861     epsil  = 0.001;
 862     stmin  = 0.001;
 863
 864 //  Active Air :
 865     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX,
 866               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 867
 868 //  Inactive air :
 869
 870     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX,
 871               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 872
 873     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX,
 874               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 875
 876     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX,
 877               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 878
 879     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX,
 880               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 881
 882
 883     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX,
 884               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 885
 886     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 887
 888     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 889     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 890     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 891     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 892
 893     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 894     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 895     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 896     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 897
 898     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 899     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 900     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 901     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 902     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 903     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 904
 905     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 906     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 907     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 908     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 909
 910     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 911     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 912     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 913     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 914     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 915     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 916
 917     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 918     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 919     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 920     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 921     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 922     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 923
 924
 925 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 926 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 927
 928 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 929 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 930
 931
 932 }
 933 //---------------------------------------------------------------------
 934 void AliVZEROv2::DrawModule()
 935 {
 936
 937 //  Drawing is done in DrawVZERO.C
 938
 939    Int_t i;
 940
 941    printf("\n");
 942    for(i=0;i<30;i++) printf("*");
 943    printf(" VZERO DrawModule ");
 944    for(i=0;i<30;i++) printf("*");
 945    printf("\n");
 946
 947
 948 }
 949
 950 //-------------------------------------------------------------------
 951 void AliVZEROv2::Init()
 952 {
 953 // Initialises version 1 of the VZERO Detector
 954 // Just prints an information message
 955
 956    printf(" VZERO version %d initialized \n",IsVersion());
 957
 958 //   gMC->SetMaxStep(fMaxStepAlu);
 959 //   gMC->SetMaxStep(fMaxStepQua);
 960
 961     AliVZERO::Init();
 962
 963 }
 964
 965 //-------------------------------------------------------------------
 966
 967 void AliVZEROv2::StepManager()
 968 {
 969
 970      Int_t     copy;
 971      static    Int_t   vol[4];
 972      static    Float_t hits[19];
 973      static    Float_t eloss, tlength;
 974
 975      TLorentzVector pos;
 976      TLorentzVector mom;
 977
 978      Float_t        theta;
 979      Float_t        phi;
 980      Float_t        kRaddeg = 180/TMath::Pi();
 981      Float_t        RingNumber;
 982
 983      Int_t          ipart;
 984      Float_t        destep, step;
 985
 986
 987 //   We keep only charged tracks :
 988
 989      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 990
 991
 992      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 993      vol[2]    = gMC->CurrentVolID(copy);
 994      vol[3]    = copy;
 995
 996
 997      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
 998                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
 999                RingNumber = 1.0;
1000      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1001                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1002                RingNumber = 2.0;
1003      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1004                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1005                RingNumber = 3.0;
1006      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1007                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1008                RingNumber = 4.0;
1009      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1010                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1011                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1012                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )
1013                RingNumber = 5.0;
1014      else
1015                RingNumber = 0.0;
1016
1017      if  (  RingNumber > 0.5  ) {
1018
1019         destep    = gMC->Edep();
1020         step      = gMC->TrackStep();
1021         eloss    += destep;
1022         tlength  += step;
1023
1024
1025         if  ( gMC->IsTrackEntering()  )  {
1026
1027             gMC->TrackPosition(pos);
1028
1029             gMC->TrackMomentum(mom);
1030             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1031             Double_t Pt   = TMath::Sqrt(tc);
1032             Double_t Pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1033             theta   = Float_t(TMath::ATan2(Pt,Double_t(mom[2])))*kRaddeg;
1034             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1035
1036             ipart  = gMC->TrackPid();
1037
1038             hits[0]  = pos[0];
1039             hits[1]  = pos[1];
1040             hits[2]  = pos[2];
1041             hits[3]  =  Float_t (ipart);
1042
1043             hits[4]  = gMC->TrackTime();
1044             hits[5]  = gMC->TrackCharge();
1045             hits[6]  = theta;
1046             hits[7]  = phi;
1047             hits[8]  = RingNumber;
1048
1049             hits[9]  = Pt;
1050             hits[10] = Pmom;
1051             hits[11] = mom[0];
1052             hits[12] = mom[1];
1053             hits[13] = mom[2];
1054
1055             TParticle *par = gAlice->Particle(gAlice->GetCurrentTrackNumber());
1056             hits[14] = par->Vx();
1057             hits[15] = par->Vy();
1058             hits[16] = par->Vz();
1059
1060             tlength  = 0.0;
1061             eloss    = 0.0;
1062
1063          }
1064
1065          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1066
1067          hits[17] =   eloss;
1068          hits[18] = tlength;
1069
1070          AddHit(gAlice->GetCurrentTrackNumber(), vol, hits);
1071
1072          tlength  = 0.0;
1073          eloss    = 0.0;
1074
1075
1076          }
1077     }
1078
1079 }
1080
1081 //_____________________________________________________________________________
1082 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1083 {
1084
1085   //  Add a VZERO hit
1086
1087
1088   TClonesArray &lhits = *fHits;
1089   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1090 }
1091
1092 //---------------------------------------------------------------------
1093 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
1094 {
1095
1096    TClonesArray  &ldigits = *fDigits;
1097    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1098 }
1099
1100 //---------------------------------------------------------------------
1101 void AliVZEROv2::MakeBranch(Option_t *option)
1102 {
1103
1104   // Creates new branches in the current Root Tree
1105
1106
1107   char branchname[10];
1108   sprintf(branchname,"%s",GetName());
1109   printf(" fBufferSize = %d \n",fBufferSize);
1110
1111   const char *H = strstr(option,"H");
1112
1113   if (fHits   && TreeH() && H) {
1114     TreeH()->Branch(branchname,&fHits, fBufferSize);
1115     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1116   }
1117
1118   const char *D = strstr(option,"D");
1119   //
1120   if (fDigits   && fLoader->TreeD() && D) {
1121     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1122     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1123   }
1124
1125 }