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 //   New coordinate system implemented in october 2003              //
  27 //                                                                  //
  28 //////////////////////////////////////////////////////////////////////
  29
  30 #include <Riostream.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include <TBRIK.h>
  35 #include <TBox.h>
  36 #include <TCONE.h>
  37 #include <TClonesArray.h>
  38 #include <TGeant3.h>
  39 #include <TGeometry.h>
  40 #include <TH1.h>
  41 #include <TLorentzVector.h>
  42 #include <TMath.h>
  43 #include <TNode.h>
  44 #include <TObjectTable.h>
  45 #include <TPCON.h>
  46 #include <TPGON.h>
  47 #include <TSPHE.h>
  48 #include <TShape.h>
  49 #include <TTRAP.h>
  50 #include <TTRD2.h>
  51 #include <TTUBE.h>
  52 #include <TTUBS.h>
  53 #include <TVirtualMC.h>
  54 #include <TParticle.h>
  55
  56 #include "AliLoader.h"
  57
  58 #include "AliConst.h"
  59 #include "AliMagF.h"
  60 #include "AliRun.h"
  61 #include "AliVZEROdigit.h"
  62 #include "AliVZEROhit.h"
  63 #include "AliVZEROv2.h"
  64 #include "AliMC.h"
  65
  66 ClassImp(AliVZEROv2)
  67
  68 //--------------------------------------------------------------------
  69 AliVZEROv2:: AliVZEROv2():AliVZERO()
  70 {
  71
  72 }
  73 //--------------------------------------------------------------------
  74 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  75  AliVZERO(name,title)
  76 {
  77
  78 // Standard constructor for V-zeroR Detector (right part)  version 0
  79
  80   Int_t i;
  81
  82   printf("\n");
  83   for(i=0;i<26;i++) printf("*");
  84   printf(" Create VZERO object ");
  85   for(i=0;i<26;i++) printf("*");
  86   printf("\n");
  87
  88 }
  89
  90 //-------------------------------------------------------------------------
  91 void AliVZEROv2::CreateGeometry()
  92 {
  93
  94 // Creates the GEANT geometry of the V-zero Detector  version 2
  95
  96   Int_t i;
  97
  98   printf("\n");
  99   for(i=0;i<26;i++) printf("*");
 100   printf(" Create VZERO Geometry ");
 101   for(i=0;i<26;i++) printf("*");
 102   printf("\n");
 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   height1           =     1.82;           // height of cell 1, in cm
 125   height2           =     3.81;           // height of cell 2, in cm
 126   height3           =     4.72;           // height of cell 3, in cm
 127   height4           =     7.12;           // height of cell 4, in cm
 128   height5           =    10.83;           // height of cell 5, in cm
 129
 130   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
 131
 132   half_thick_qua    = fThickness1/2.0;   // half thickness of elementary cell (inner ring)
 133
 134   zdet              =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
 135   r0                =    4.05;            // closest distance to center of the beam pipe
 136   height            =    height1 + height2 + height3 + height4 + height5;
 137   r5                =    r0 + height;
 138
 139 // Creation of mother volume V0LE - left part - :
 140 // Entrance face at  +350.0 cm  (new coordinate system) ...
 141
 142    Float_t   partube[3];
 143
 144    partube[0] =  4.3;
 145    partube[1] = 45.0;
 146    partube[2] = fThickness1/2.0;
 147
 148    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 149
 150 // Creation of five rings - left part - :
 151 // Entrance face at +350.0 cm  (new coordinate system) ...
 152
 153 // Mother volume V0L0 in which will be set 5 scintillator cells
 154
 155   Float_t   partubs[5];
 156
 157   Float_t   r0_left      =   4.3;
 158   Float_t   height1_left =   2.6;
 159   Float_t   height2_left =   4.1;
 160   Float_t   height3_left =   6.4;
 161   Float_t   height4_left =  10.2;
 162   Float_t   height5_left =  16.9;
 163   Float_t   height_left  = height1_left + height2_left + height3_left
 164                                         + height4_left + height5_left;
 165   Float_t   r5_left      = r0_left  + height_left;
 166
 167   partubs[0]      =  r0_left;
 168   partubs[1]      =  r5_left;
 169   partubs[2]      =  fThickness1/2.0;
 170   partubs[3]      =  90.0-15.0;
 171   partubs[4]      = 120.0-15.0;
 172
 173   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 174
 175   Float_t  r1_left =  r0_left + height1_left;
 176
 177   partubs[0]     =  r0_left;
 178   partubs[1]     =  r1_left;
 179
 180   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 181   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 182
 183   Float_t   r2_left  =   r1_left + height2_left;
 184
 185   partubs[0]     =  r1_left;
 186   partubs[1]     =  r2_left;
 187
 188   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 189   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 190
 191   Float_t   r3_left =   r2_left + height3_left;
 192
 193   partubs[0]     =  r2_left;
 194   partubs[1]     =  r3_left;
 195
 196   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 197   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 198
 199   Float_t   r4_left =  r3_left + height4_left;
 200
 201   partubs[0]     =  r3_left;
 202   partubs[1]     =  r4_left;
 203
 204   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 205   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 206
 207   partubs[0]     =  r4_left;
 208   partubs[1]     =  r5_left;
 209   partubs[3]     =  90.0-15.0;
 210   partubs[4]     = 120.0-30.0;
 211
 212   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 213   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 214
 215   partubs[3]     = 120.0-30.0;
 216   partubs[4]     = 120.0-15.0;
 217
 218   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 219   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 220
 221
 222 // Creation of mother volume V0RI - right part - :
 223
 224   partube[0] = r0 - 0.2;
 225   partube[1] = r5 + 1.0;
 226   partube[2] = fThickness/2.0;
 227
 228   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 229
 230 // Creation of  carbon lids (3 mm thick) to keep V0RI box shut...
 231
 232   partube[0] =   r0;
 233   partube[1] =   r5;
 234   partube[2] =   +0.3/2.0;
 235
 236   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 237   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 238   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 239
 240 // Creation of aluminum rings to maintain the V0RI pieces ...
 241
 242   partube[0] =   r0 - 0.2;
 243   partube[1] =   r0;
 244   partube[2] =   +fThickness/2.0;
 245
 246   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 247   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 248
 249   partube[0] =   r5;
 250   partube[1] =   r5 + 1.0;
 251   partube[2] =   +fThickness/2.0;
 252
 253   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 254   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 255
 256 // Mother volume V0R0 in which will be set 5  scintillator cells
 257
 258   partubs[0]      =  r0;
 259   partubs[1]      =  r5;
 260   partubs[2]      =  fThickness/2.0;
 261   partubs[3]      =  90.0-15.0;
 262   partubs[4]      = 120.0-15.0;
 263
 264   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 265
 266 // Elementary cell of ring 1 :
 267 // (the cells will be shifted by 3 mm to output fibers)
 268
 269   Float_t   offset_fibers =  0.7;
 270   Float_t   offset        =  fThickness/2.0 - 0.3 - fThickness1/2.0;
 271   Float_t   r1            =  r0 + height1;
 272
 273   partubs[0]     =  r0;
 274   partubs[1]     =  r1;
 275   partubs[2]     =  fThickness1/2.0;
 276
 277   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 278   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 279
 280 // Elementary cell of ring 2 :
 281
 282   Float_t   r2   =  r1 + height2;
 283
 284   partubs[0]     =  r1;
 285   partubs[1]     =  r2;
 286
 287   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 288   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offset_fibers, 0,"ONLY");
 289
 290
 291 // Elementary cell of ring 3 :
 292
 293   Float_t   r3   =  r2 + height3;
 294
 295   partubs[0]     =  r2;
 296   partubs[1]     =  r3;
 297
 298   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 299   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offset_fibers, 0,"ONLY");
 300
 301 // Elementary cell of ring 4 :
 302
 303   Float_t   r4   =  r3 + height4 ;
 304
 305   partubs[0]     =  r3;
 306   partubs[1]     =  r4;
 307
 308   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 309   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  -offset + 3.0 * offset_fibers, 0,"ONLY");
 310
 311 // Elementary cells of ring 5 :
 312
 313   partubs[0]     =  r4;
 314   partubs[1]     =  r5;
 315   partubs[3]     =  90.0-15.0;
 316   partubs[4]     = 120.0-30.0;
 317
 318   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 319   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 4.0 * offset_fibers, 0,"ONLY");
 320
 321   partubs[3]     = 120.0-30.0;
 322   partubs[4]     = 120.0-15.0;
 323
 324   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 325   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  -offset + 4.0 * offset_fibers, 0,"ONLY");
 326
 327   Float_t  phi_deg = 180./6.;
 328
 329 // Right part :
 330
 331   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 332       {
 333         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 334         gMC->Gspos("V0R0",n_detec_R,"V0RI",0.0,
 335                           0.0,0.0,idrotm[902],"ONLY");
 336         n_detec_R++;
 337        }
 338
 339   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
 340
 341   n_cells_R = (n_detec_R - 1) * 6;
 342   printf("    Number of cells on Right side =   %d\n",  n_cells_R);
 343
 344 // Left part :
 345
 346   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 347       {
 348         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 349         gMC->Gspos("V0L0",n_detec_L,"V0LE",0.0,
 350                           0.0,0.0,idrotm[902],"ONLY");
 351         n_detec_L++;
 352        }
 353
 354   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
 355
 356   n_cells_L = (n_detec_L - 1) * 6;
 357   printf("    Number of cells on Left side  =   %d\n",  n_cells_L);
 358   for(i=0;i<75;i++) printf("*");
 359   printf("\n");
 360
 361 }
 362
 363 //_____________________________________________________________________________
 364 void AliVZEROv2::BuildGeometry()
 365 {
 366
 367 // Builds simple ROOT TNode geometry for event display
 368
 369   Int_t i;
 370
 371   printf("\n");
 372   for(i=0;i<30;i++) printf("*");
 373   printf(" VZERO BuildGeometry ");
 374   for(i=0;i<30;i++) printf("*");
 375   printf("\n");
 376
 377   TNode *Top;
 378
 379   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 380   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 381   TNode *V0Lnode, *V0Lnode0;
 382   TNode *V0Lnode1, *V0Lnode2, *V0Lnode3, *V0Lnode4, *V0Lnode5, *V0Lnode6;
 383
 384   const int kColorVZERO  = kGreen;
 385
 386   Top = gAlice->GetGeometry()->GetNode("alice");
 387
 388   Float_t  height1, height2, height3, height4, height5;
 389   Float_t  height;
 390   Float_t  theta;
 391
 392   Float_t  half_thick_qua;
 393   Float_t  zdet;
 394   Float_t  r0, r5;
 395   Float_t  pi = TMath::Pi();
 396
 397   height1           =     1.82;           // height of cell 1, in cm
 398   height2           =     3.81;           // height of cell 2, in cm
 399   height3           =     4.72;           // height of cell 3, in cm
 400   height4           =     7.12;           // height of cell 4, in cm
 401   height5           =    10.83;           // height of cell 5, in cm
 402
 403   theta             =    pi/6.0/2.0;
 404
 405   half_thick_qua    =    fThickness1/2.0;
 406
 407   zdet              =    90.0 - 0.6 - fThickness/2.0;
 408   r0                =    4.05;
 409   height            =    height1 + height2 + height3 + height4 + height5;
 410   r5                =    r0 + height;
 411
 412   Int_t     ndiv    =     1;
 413
 414   Float_t   partube[3];
 415
 416   partube[0] =  r0 - 0.2;
 417   partube[1] =  r5 + 1.0;
 418   partube[2] = fThickness/2.0;
 419
 420   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 421
 422   Top->cd();
 423
 424   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,-zdet,0);
 425
 426   V0Rnode->SetLineColor(kYellow);
 427   fNodes->Add(V0Rnode);
 428   V0Rnode->SetVisibility(2);
 429
 430 // Rondelles de carbone (epaisseur 3 mm) de maintien des cellules ...
 431
 432   partube[0] =   r0;
 433   partube[1] =   r5;
 434   partube[2] =   +0.3/2.0;
 435
 436   TTUBE  *V0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 437
 438   V0Rnode->cd();
 439   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 440   V0Rnode6->SetLineColor(kYellow);
 441   fNodes->Add(V0Rnode6);
 442   V0Rnode->cd();
 443   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 444   V0Rnode7->SetLineColor(kYellow);
 445   fNodes->Add(V0Rnode7);
 446
 447   partube[0] =   r0 - 0.2;
 448   partube[1] =   r0;
 449   partube[2] =   +fThickness/2.0;
 450
 451   TTUBE *V0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 452
 453   V0Rnode->cd();
 454   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 455   V0Rnode8->SetLineColor(kYellow);
 456   fNodes->Add(V0Rnode8);
 457
 458   partube[0] =   r5;
 459   partube[1] =   r5 + 1.0;
 460   partube[2] =   +fThickness/2.0;
 461
 462   TTUBE  *V0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 463
 464   V0Rnode->cd();
 465   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 466   V0Rnode9->SetLineColor(kYellow);
 467   fNodes->Add(V0Rnode9);
 468
 469   Float_t   partubs[5];
 470
 471   partubs[0]      =  r0;
 472   partubs[1]      =  r5;
 473   partubs[2]      =  fThickness/2.0;
 474   partubs[3]      =  90.0-15.0;
 475   partubs[4]      = 120.0-15.0;
 476
 477   TTUBS  *V0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 478                                                   partubs[3], partubs[4]);
 479
 480   V0R0->SetNumberOfDivisions(ndiv);
 481
 482   Float_t   r1     =  r0 + height1;
 483   Float_t   offset = fThickness/2.0 - 0.3 - fThickness1/2.0;
 484   Float_t   offset_fibers = 0.7;
 485
 486   partubs[0]     =  r0;
 487   partubs[1]     =  r1;
 488   partubs[2]     =  fThickness1/2.0;
 489
 490   TTUBS *V0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 491                                                   partubs[3], partubs[4]);
 492
 493   V0R1->SetNumberOfDivisions(ndiv);
 494
 495   Float_t   r2   =  r1 + height2;
 496
 497   partubs[0]     =  r1;
 498   partubs[1]     =  r2;
 499
 500   TTUBS *V0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 501                                                   partubs[3], partubs[4]);
 502
 503   V0R2->SetNumberOfDivisions(ndiv);
 504
 505   Float_t   r3   =  r2 + height3;
 506
 507   partubs[0]     =  r2;
 508   partubs[1]     =  r3;
 509
 510   TTUBS *V0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 511                                                   partubs[3], partubs[4]);
 512   V0R3->SetNumberOfDivisions(ndiv);
 513
 514   Float_t   r4   =  r3 + height4;
 515
 516   partubs[0]     =  r3;
 517   partubs[1]     =  r4;
 518
 519   TTUBS *V0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 520                                                   partubs[3], partubs[4]);
 521
 522   V0R4->SetNumberOfDivisions(ndiv);
 523
 524   partubs[0]     =  r4;
 525   partubs[1]     =  r5;
 526   partubs[3]     =  90.0-15.0;
 527   partubs[4]     = 120.0-30.0;
 528
 529   TTUBS *V0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 530                                                   partubs[3], partubs[4]);
 531
 532   V0R5->SetNumberOfDivisions(ndiv);
 533
 534   partubs[3]     = 120.0-30.0;
 535   partubs[4]     = 120.0-15.0;
 536
 537   TTUBS *V0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 538                                                   partubs[3], partubs[4]);
 539
 540   V0R6->SetNumberOfDivisions(ndiv);
 541
 542   Float_t  phi;
 543   Float_t  phi_deg= 180./6.;
 544
 545   Int_t    n_detec_R = 1;
 546
 547   char     NameNode[12];
 548
 549   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 550
 551   {
 552
 553     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 554
 555     sprintf(NameNode,"SUBDER%d",n_detec_R);
 556
 557     V0Rnode->cd();
 558     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,0.0,0.0, 0.0,mat920);
 559     V0Rnode0->SetLineColor(kYellow);
 560     fNodes->Add(V0Rnode0);
 561     n_detec_R++;
 562
 563     sprintf(NameNode,"SUBDER%d",n_detec_R);
 564     V0Rnode0->cd();
 565     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,0.0, -offset,0);
 566     V0Rnode1->SetLineColor(kColorVZERO);
 567     fNodes->Add(V0Rnode1);
 568     n_detec_R++;
 569
 570     sprintf(NameNode,"SUBDER%d",n_detec_R);
 571     V0Rnode0->cd();
 572     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,0.0, -offset + offset_fibers,0);
 573     V0Rnode2->SetLineColor(kColorVZERO);
 574     fNodes->Add(V0Rnode2);
 575     n_detec_R++;
 576
 577     sprintf(NameNode,"SUBDER%d",n_detec_R);
 578     V0Rnode0->cd();
 579     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,0.0, -offset + 2.0*offset_fibers,0);
 580     V0Rnode3->SetLineColor(kColorVZERO);
 581     fNodes->Add(V0Rnode3);
 582     n_detec_R++;
 583
 584     sprintf(NameNode,"SUBDER%d",n_detec_R);
 585     V0Rnode0->cd();
 586     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,0.0, -offset + 3.0*offset_fibers,0);
 587     V0Rnode4->SetLineColor(kColorVZERO);
 588     fNodes->Add(V0Rnode4);
 589     n_detec_R++;
 590
 591     sprintf(NameNode,"SUBDER%d",n_detec_R);
 592     V0Rnode0->cd();
 593     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,0.0, -offset + 4.0*offset_fibers,0);
 594     V0Rnode5->SetLineColor(kColorVZERO);
 595     fNodes->Add(V0Rnode5);
 596     n_detec_R++;
 597
 598     sprintf(NameNode,"SUBDER%d",n_detec_R);
 599     V0Rnode0->cd();
 600     V0Rnode6 = new TNode(NameNode,NameNode,V0R6,0.0,0.0, -offset + 4.0*offset_fibers,0);
 601     V0Rnode6->SetLineColor(kColorVZERO);
 602     fNodes->Add(V0Rnode6);
 603     n_detec_R++;
 604
 605     V0Rnode0->SetVisibility(2);
 606
 607   }
 608
 609 // Left side of VZERO :
 610
 611   Float_t   r0_left      =   4.3;
 612   Float_t   height1_left =   2.6;
 613   Float_t   height2_left =   4.1;
 614   Float_t   height3_left =   6.4;
 615   Float_t   height4_left =  10.2;
 616   Float_t   height5_left =  16.9;
 617   Float_t   height_left  = height1_left + height2_left + height3_left
 618                                         + height4_left + height5_left;
 619   Float_t   r5_left      = r0_left  + height_left;
 620
 621   partube[0] =  r0_left;
 622   partube[1] =  r5_left;
 623   partube[2] =  fThickness1/2.0;
 624
 625   TTUBE *V0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 626
 627   Top->cd();
 628
 629   V0Lnode = new TNode("V0LE","V0LE",V0LE,0.0,0.0,350.0+fThickness1/2.0,0);
 630
 631   V0Lnode->SetLineColor(kBlue);
 632   fNodes->Add(V0Lnode);
 633
 634   V0Lnode->SetVisibility(2);
 635
 636   partubs[0]      =  r0_left;
 637   partubs[1]      =  r5_left;
 638   partubs[2]      =  fThickness1/2.0;
 639   partubs[3]      =  90.0-15.0;
 640   partubs[4]      = 120.0-15.0;
 641
 642   TTUBS *V0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 643                                                   partubs[3], partubs[4]);
 644
 645   V0L0->SetNumberOfDivisions(ndiv);
 646   V0L0->SetLineColor(7);
 647
 648   Float_t   offset_left;
 649   offset_left    = - fThickness1/2.0;
 650
 651   Float_t   r1_left =  r0_left + height1_left;
 652
 653   partubs[0]     =  r0_left;
 654   partubs[1]     =  r1_left;
 655
 656   TTUBS *V0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 657                                                   partubs[3], partubs[4]);
 658
 659   V0L1->SetNumberOfDivisions(ndiv);
 660
 661   Float_t   r2_left =  r1_left + height2_left;
 662
 663   partubs[0]     =  r1_left;
 664   partubs[1]     =  r2_left;
 665
 666   TTUBS *V0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 667                                                   partubs[3], partubs[4]);
 668
 669   V0L2->SetNumberOfDivisions(ndiv);
 670
 671   Float_t   r3_left  =  r2_left + height3_left;
 672
 673   partubs[0]     =  r2_left;
 674   partubs[1]     =  r3_left;
 675
 676   TTUBS *V0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 677                                                   partubs[3], partubs[4]);
 678   V0L3->SetNumberOfDivisions(ndiv);
 679
 680   Float_t   r4_left  =   r3_left + height4_left;
 681
 682   partubs[0]     =  r3_left;
 683   partubs[1]     =  r4_left;
 684
 685   TTUBS *V0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 686                                                   partubs[3], partubs[4]);
 687
 688   V0L4->SetNumberOfDivisions(ndiv);
 689
 690   partubs[0]     =  r4_left;
 691   partubs[1]     =  r5_left;
 692   partubs[3]     =  90.0-15.0;
 693   partubs[4]     = 120.0-30.0;
 694
 695   TTUBS *V0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 696                                                   partubs[3], partubs[4]);
 697
 698
 699   V0L5->SetNumberOfDivisions(ndiv);
 700
 701   partubs[3]     = 120.0-30.0;
 702   partubs[4]     = 120.0-15.0;
 703
 704   TTUBS *V0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 705                                                   partubs[3], partubs[4]);
 706
 707   V0L6->SetNumberOfDivisions(ndiv);
 708
 709   Int_t    n_detec_L   = 1;
 710
 711   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 712
 713   {
 714
 715     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 716
 717
 718     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 719
 720     V0Lnode->cd();
 721     V0Lnode0 = new TNode(NameNode,NameNode,V0L0,0.0,0.0, offset_left + half_thick_qua,mat920);
 722     V0Lnode0->SetLineColor(kColorVZERO);
 723     fNodes->Add(V0Lnode0);
 724     n_detec_L++;
 725
 726     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 727     V0Lnode0->cd();
 728     V0Lnode1 = new TNode(NameNode,NameNode,V0L1,0.0,0.0, 0.0,0);
 729     V0Lnode1->SetLineColor(kColorVZERO);
 730     fNodes->Add(V0Lnode1);
 731     n_detec_L++;
 732
 733     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 734     V0Lnode0->cd();
 735     V0Lnode2 = new TNode(NameNode,NameNode,V0L2,0.0,0.0, 0.0,0);
 736     V0Lnode2->SetLineColor(kColorVZERO);
 737     fNodes->Add(V0Lnode2);
 738     n_detec_L++;
 739
 740
 741     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 742     V0Lnode0->cd();
 743     V0Lnode3 = new TNode(NameNode,NameNode,V0L3,0.0,0.0, 0.0,0);
 744     V0Lnode3->SetLineColor(kColorVZERO);
 745     fNodes->Add(V0Lnode3);
 746     n_detec_L++;
 747
 748     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 749     V0Lnode0->cd();
 750     V0Lnode4 = new TNode(NameNode,NameNode,V0L4,0.0,0.0, 0.0,0);
 751     V0Lnode4->SetLineColor(kColorVZERO);
 752     fNodes->Add(V0Lnode4);
 753     n_detec_L++;
 754
 755     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 756     V0Lnode0->cd();
 757     V0Lnode5 = new TNode(NameNode,NameNode,V0L5,0.0,0.0, 0.0,0);
 758     V0Lnode5->SetLineColor(kColorVZERO);
 759     fNodes->Add(V0Lnode5);
 760     n_detec_L++;
 761
 762     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 763     V0Lnode0->cd();
 764     V0Lnode6 = new TNode(NameNode,NameNode,V0L6,0.0,0.0, 0.0,0);
 765     V0Lnode6->SetLineColor(kColorVZERO);
 766     fNodes->Add(V0Lnode6);
 767     n_detec_L++;
 768
 769     V0Lnode0->SetVisibility(2);
 770
 771   }
 772
 773 }
 774
 775 //------------------------------------------------------------------------
 776 void AliVZEROv2::CreateMaterials()
 777 {
 778     Int_t i;
 779
 780     printf("\n");
 781     for(i=0;i<25;i++) printf("*");
 782     printf(" VZERO create materials ");
 783     for(i=0;i<26;i++) printf("*");
 784     printf("\n");
 785
 786 /*
 787     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,
 788                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 789
 790
 791     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,
 792                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 793
 794     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 795                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 796                                  1.662295, 1.68337 };
 797
 798     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 799                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 800
 801     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 802
 803
 804     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 805
 806
 807     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,
 808                                1e-4,1e-4,1e-4,1e-4 };
 809     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 810
 811 */
 812
 813     Int_t *idtmed = fIdtmed->GetArray()-2999;
 814
 815 //    TGeant3 *geant3 = (TGeant3*) gMC;
 816
 817 //  Parameters related to Quarz (SiO2) :
 818
 819     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 820     Int_t nlmatqua;
 821
 822     aqua[0]    = 28.09;
 823     aqua[1]    = 16.;
 824     zqua[0]    = 14.;
 825     zqua[1]    = 8.;
 826     densqua    = 2.64;
 827     nlmatqua   = -2;
 828     wmatqua[0] = 1.;
 829     wmatqua[1] = 2.;
 830
 831 // Parameters  related to aluminum sheets :
 832
 833     Float_t  aal   = 26.98;
 834     Float_t  zal   = 13.00;
 835     Float_t  densal=   2.7;
 836     Float_t  radlal=   8.9;
 837
 838 // Parameters  related to scintillator CH :
 839
 840     Float_t ascin[2] = {1.00794,12.011};
 841     Float_t zscin[2] = {1.,6.};
 842     Float_t wscin[2] = {1.,1.};
 843     Float_t denscin  = 1.032;
 844
 845 //  Definition of materials :
 846
 847     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 848     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 849     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 850     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 851     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 852     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 853
 854     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 855
 856
 857     Int_t   ISXFLD = gAlice->Field()->Integ();
 858     Float_t SXMGMX = gAlice->Field()->Max();
 859
 860     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 861
 862     tmaxfd = 10.;
 863     stemax = 0.1;
 864     deemax = 0.1;
 865     epsil  = 0.001;
 866     stmin  = 0.001;
 867
 868 //  Active Air :
 869     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX,
 870               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 871
 872 //  Inactive air :
 873
 874     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX,
 875               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 876
 877     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX,
 878               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 879
 880     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX,
 881               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 882
 883     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX,
 884               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 885
 886
 887     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX,
 888               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 889
 890     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 891
 892     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 893     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 894     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 895     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 896
 897     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 898     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 899     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 900     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 901
 902     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 903     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 904     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 905     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 906     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 907     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 908
 909     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 910     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 911     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 912     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 913
 914     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 915     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 916     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 917     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 918     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 919     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 920
 921     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 922     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 923     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 924     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 925     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 926     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 927
 928
 929 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 930 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 931
 932 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 933 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 934
 935
 936 }
 937 //---------------------------------------------------------------------
 938 void AliVZEROv2::DrawModule()
 939 {
 940
 941 //  Drawing is done in DrawVZERO.C
 942
 943    Int_t i;
 944
 945    printf("\n");
 946    for(i=0;i<30;i++) printf("*");
 947    printf(" VZERO DrawModule ");
 948    for(i=0;i<30;i++) printf("*");
 949    printf("\n");
 950
 951
 952 }
 953
 954 //-------------------------------------------------------------------
 955 void AliVZEROv2::Init()
 956 {
 957 // Initialises version 1 of the VZERO Detector
 958 // Just prints an information message
 959
 960    printf(" VZERO version %d initialized \n",IsVersion());
 961
 962 //   gMC->SetMaxStep(fMaxStepAlu);
 963 //   gMC->SetMaxStep(fMaxStepQua);
 964
 965     AliVZERO::Init();
 966
 967 }
 968
 969 //-------------------------------------------------------------------
 970
 971 void AliVZEROv2::StepManager()
 972 {
 973
 974      Int_t     copy;
 975      static    Int_t   vol[4];
 976      static    Float_t hits[19];
 977      static    Float_t eloss, tlength;
 978
 979      TLorentzVector pos;
 980      TLorentzVector mom;
 981
 982      Float_t        theta;
 983      Float_t        phi;
 984      Float_t        kRaddeg = 180/TMath::Pi();
 985      Float_t        RingNumber;
 986
 987      Int_t          ipart;
 988      Float_t        destep, step;
 989
 990
 991 //   We keep only charged tracks :
 992
 993      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 994
 995
 996      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 997      vol[2]    = gMC->CurrentVolID(copy);
 998      vol[3]    = copy;
 999
1000
1001      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
1002                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
1003                RingNumber = 1.0;
1004      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1005                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1006                RingNumber = 2.0;
1007      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1008                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1009                RingNumber = 3.0;
1010      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1011                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1012                RingNumber = 4.0;
1013      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1014                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1015                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1016                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )
1017                RingNumber = 5.0;
1018      else
1019                RingNumber = 0.0;
1020
1021      if  (  RingNumber > 0.5  ) {
1022
1023         destep    = gMC->Edep();
1024         step      = gMC->TrackStep();
1025         eloss    += destep;
1026         tlength  += step;
1027
1028
1029         if  ( gMC->IsTrackEntering()  )  {
1030
1031             gMC->TrackPosition(pos);
1032
1033             gMC->TrackMomentum(mom);
1034             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1035             Double_t Pt   = TMath::Sqrt(tc);
1036             Double_t Pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1037             theta   = Float_t(TMath::ATan2(Pt,Double_t(mom[2])))*kRaddeg;
1038             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1039
1040             ipart  = gMC->TrackPid();
1041
1042             hits[0]  = pos[0];
1043             hits[1]  = pos[1];
1044             hits[2]  = pos[2];
1045             hits[3]  =  Float_t (ipart);
1046
1047             hits[4]  = gMC->TrackTime();
1048             hits[5]  = gMC->TrackCharge();
1049             hits[6]  = theta;
1050             hits[7]  = phi;
1051             hits[8]  = RingNumber;
1052
1053             hits[9]  = Pt;
1054             hits[10] = Pmom;
1055             hits[11] = mom[0];
1056             hits[12] = mom[1];
1057             hits[13] = mom[2];
1058
1059             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
1060             hits[14] = par->Vx();
1061             hits[15] = par->Vy();
1062             hits[16] = par->Vz();
1063
1064             tlength  = 0.0;
1065             eloss    = 0.0;
1066
1067          }
1068
1069          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1070
1071          hits[17] =   eloss;
1072          hits[18] = tlength;
1073
1074          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1075
1076          tlength  = 0.0;
1077          eloss    = 0.0;
1078
1079
1080          }
1081     }
1082
1083 }
1084
1085 //_____________________________________________________________________________
1086 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1087 {
1088
1089   //  Add a VZERO hit
1090
1091
1092   TClonesArray &lhits = *fHits;
1093   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1094 }
1095
1096 //---------------------------------------------------------------------
1097 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
1098 {
1099
1100    TClonesArray  &ldigits = *fDigits;
1101    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1102 }
1103
1104 //---------------------------------------------------------------------
1105 void AliVZEROv2::MakeBranch(Option_t *option)
1106 {
1107
1108   // Creates new branches in the current Root Tree
1109
1110
1111   char branchname[10];
1112   sprintf(branchname,"%s",GetName());
1113   printf(" fBufferSize = %d \n",fBufferSize);
1114
1115   const char *H = strstr(option,"H");
1116
1117   if (fHits   && TreeH() && H) {
1118     TreeH()->Branch(branchname,&fHits, fBufferSize);
1119     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1120   }
1121
1122   const char *D = strstr(option,"D");
1123   //
1124   if (fDigits   && fLoader->TreeD() && D) {
1125     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1126     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1127   }
1128
1129 }