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  *                                                                        *
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   8  * documentation strictly for non-commercial purposes is hereby granted   *
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  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.                  *
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  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  26th of november 2003                         //
  24 //  (circular instead of trapezoidal shapes as in previous versions //
  25 //   plus changes in cell dimensions and offsets) :                 //
  26 //   Scintillating cells are now 2 cm thick instead of 0.7 cm       //
  27 //   V0R sits between Z values  -89.4 and  -85.0 cm                 //
  28 //   V0L sits between Z values +350.0 and +352.0 cm                 //
  29 //   New coordinate system has been implemented in october 2003     //
  30 //                                                                  //
  31 //////////////////////////////////////////////////////////////////////
  32
  33 // --- Standard libraries ---
  34 #include <Riostream.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 // --- ROOT libraries ---
  39 #include <TClonesArray.h>
  40 #include <TGeometry.h>
  41 #include <TLorentzVector.h>
  42 #include <TMath.h>
  43 #include <TNode.h>
  44 #include <TObjectTable.h>
  45 #include <TTUBE.h>
  46 #include <TTUBS.h>
  47 #include <TVirtualMC.h>
  48 #include <TParticle.h>
  49
  50 // --- AliRoot header files ---
  51 #include "AliRun.h"
  52 #include "AliMC.h"
  53 #include "AliConst.h"
  54 #include "AliLog.h"
  55 #include "AliMagF.h"
  56 #include "AliVZEROLoader.h"
  57 #include "AliVZEROdigit.h"
  58 #include "AliVZEROhit.h"
  59 #include "AliVZEROv2.h"
  60
  61 ClassImp(AliVZEROv2)
  62
  63 //_____________________________________________________________________________
  64 AliVZEROv2:: AliVZEROv2():AliVZERO()
  65 {
  66 // Standard default constructor
  67 }
  68
  69 //_____________________________________________________________________________
  70 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  71  AliVZERO(name,title)
  72 {
  73
  74 // Standard constructor for V-zero Detector  version 2
  75
  76   AliDebug(2,"Create VZERO object");
  77
  78 }
  79
  80 //_____________________________________________________________________________
  81 void AliVZEROv2::CreateGeometry()
  82 {
  83
  84 // Creates the GEANT geometry of the V-zero Detector  version 2
  85
  86   AliDebug(2,"Create VZERO Geometry");
  87
  88   Int_t    *idtmed = fIdtmed->GetArray()-2999;
  89
  90   Int_t    ndetR = 1;
  91   Int_t    ndetL = 1;
  92
  93   Int_t    ncellsR = 1;
  94   Int_t    ncellsL = 1;
  95
  96   Int_t    idrotm[999];
  97
  98   Float_t  height1, height2, height3, height4, height5;
  99   Float_t  height;
 100   Float_t  theta;
 101
 102   Float_t  halfThickQua;
 103
 104   Float_t  zdet;
 105   Float_t  r0, r5;
 106   Float_t  pi = TMath::Pi();
 107
 108   height1     =     1.82;         // height of cell 1, in cm
 109   height2     =     3.81;         // height of cell 2, in cm
 110   height3     =     4.72;         // height of cell 3, in cm
 111   height4     =     7.12;         // height of cell 4, in cm
 112   height5     =    10.83;         // height of cell 5, in cm
 113
 114   theta       = pi/6.0/2.0;       // half angular opening = 15 degrees
 115
 116   halfThickQua= fThickness1/2.0;  // half thickness of elementary cell (inner ring)
 117
 118 // distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
 119 // absorber nose sitting at 90 cm. Will use -zdet later...
 120
 121   zdet        =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
 122   r0          =    4.05;          // closest distance to center of the beam pipe
 123   height      =    height1 + height2 + height3 + height4 + height5;
 124   r5          =    r0 + height;
 125
 126 // Creation of mother volume v0LE - left part - :
 127 // Entrance face at  +350.0 cm  (new coordinate system) ...
 128
 129    Float_t   partube[3];
 130
 131    partube[0] =  4.3;
 132    partube[1] = 45.0;
 133    partube[2] = fThickness1/2.0;
 134
 135    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 136
 137 // Creation of five rings - left part - :
 138 // Entrance face at +350.0 cm  (new coordinate system) ...
 139
 140 // Mother volume v0L0 in which will be set 5 scintillator cells
 141
 142   Float_t   partubs[5];
 143
 144   Float_t   r0Left      =   4.3;
 145   Float_t   height1Left =   2.6;
 146   Float_t   height2Left =   4.1;
 147   Float_t   height3Left =   6.4;
 148   Float_t   height4Left =  10.2;
 149   Float_t   height5Left =  16.9;
 150   Float_t   heightLeft  = height1Left + height2Left + height3Left
 151                                       + height4Left + height5Left;
 152   Float_t   r5Left      = r0Left  + heightLeft;
 153
 154   partubs[0]      =  r0Left;
 155   partubs[1]      =  r5Left;
 156   partubs[2]      =  fThickness1/2.0;
 157   partubs[3]      =  90.0-15.0;
 158   partubs[4]      = 120.0-15.0;
 159
 160   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 161
 162   Float_t  r1Left =  r0Left + height1Left;
 163
 164   partubs[0]     =  r0Left;
 165   partubs[1]     =  r1Left;
 166
 167   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 168   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 169
 170   Float_t   r2Left  =   r1Left + height2Left;
 171
 172   partubs[0]     =  r1Left;
 173   partubs[1]     =  r2Left;
 174
 175   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 176   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 177
 178   Float_t   r3Left =   r2Left + height3Left;
 179
 180   partubs[0]     =  r2Left;
 181   partubs[1]     =  r3Left;
 182
 183   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 184   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 185
 186   Float_t   r4Left =  r3Left + height4Left;
 187
 188   partubs[0]     =  r3Left;
 189   partubs[1]     =  r4Left;
 190
 191   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 192   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 193
 194   partubs[0]     =  r4Left;
 195   partubs[1]     =  r5Left;
 196   partubs[3]     =  90.0-15.0;
 197   partubs[4]     = 120.0-30.0;
 198
 199   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 200   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 201
 202   partubs[3]     = 120.0-30.0;
 203   partubs[4]     = 120.0-15.0;
 204
 205   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 206   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 207
 208
 209 // Creation of mother volume v0RI - right part - :
 210
 211   partube[0] = r0 - 0.2;
 212   partube[1] = r5 + 1.0;
 213   partube[2] = fThickness/2.0;
 214
 215   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 216
 217 // Creation of  carbon lids (2 mm thick) to keep v0RI box shut...
 218
 219   Float_t  lidThickness = 0.2;
 220
 221   partube[0] =   r0;
 222   partube[1] =   r5;
 223   partube[2] =   +lidThickness/2.0;
 224
 225   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 226   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 227   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 228
 229 // Creation of aluminum rings to maintain the v0RI pieces ...
 230
 231   partube[0] =   r0 - 0.2;
 232   partube[1] =   r0;
 233   partube[2] =   +fThickness/2.0;
 234
 235   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 236   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 237
 238   partube[0] =   r5;
 239   partube[1] =   r5 + 1.0;
 240   partube[2] =   +fThickness/2.0;
 241
 242   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 243   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 244
 245 // Mother volume v0R0 in which will be set 5  scintillator cells
 246
 247   partubs[0]      =  r0;
 248   partubs[1]      =  r5;
 249   partubs[2]      =  fThickness/2.0;
 250   partubs[3]      =  90.0-15.0;
 251   partubs[4]      = 120.0-15.0;
 252
 253   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 254
 255 // Elementary cell of ring 1 :
 256 // (cells 2 and 3  will be shifted by 1 cm to output fibers)
 257
 258   Float_t   offsetFibers  =  1.0;
 259   Float_t   offset        =  fThickness/2.0 - lidThickness - fThickness1/2.0;
 260   Float_t   r1            =  r0 + height1;
 261
 262   partubs[0]     =  r0;
 263   partubs[1]     =  r1;
 264   partubs[2]     =  fThickness1/2.0;
 265
 266   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 267   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 268
 269 // Elementary cell of ring 2 :
 270
 271   Float_t   r2   =  r1 + height2;
 272
 273   partubs[0]     =  r1;
 274   partubs[1]     =  r2;
 275
 276   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 277   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
 278
 279
 280 // Elementary cell of ring 3 :
 281
 282   Float_t   r3   =  r2 + height3;
 283
 284   partubs[0]     =  r2;
 285   partubs[1]     =  r3;
 286
 287   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 288   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
 289
 290 // Elementary cell of ring 4 :
 291
 292   Float_t   r4   =  r3 + height4 ;
 293
 294   partubs[0]     =  r3;
 295   partubs[1]     =  r4;
 296
 297   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 298   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  -offset + 2.0 * offsetFibers, 0,"ONLY");
 299
 300 // Elementary cells of ring 5 :
 301
 302   partubs[0]     =  r4;
 303   partubs[1]     =  r5;
 304   partubs[3]     =  90.0-15.0;
 305   partubs[4]     = 120.0-30.0;
 306
 307   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 308   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
 309
 310   partubs[3]     = 120.0-30.0;
 311   partubs[4]     = 120.0-15.0;
 312
 313   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 314   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  -offset + 2.0 * offsetFibers, 0,"ONLY");
 315
 316   Float_t  phiDeg = 180./6.;
 317
 318 // Right part :
 319
 320   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 321       {
 322         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 323         gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
 324                           0.0,0.0,idrotm[902],"ONLY");
 325         ndetR++;
 326        }
 327
 328   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
 329
 330   ncellsR = (ndetR - 1) * 6;
 331   AliInfo(Form("Number of cells on Right side =   %d",  ncellsR));
 332
 333 // Left part :
 334
 335   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 336       {
 337         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 338         gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
 339                           0.0,0.0,idrotm[902],"ONLY");
 340         ndetL++;
 341        }
 342
 343   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
 344
 345   ncellsL = (ndetL - 1) * 6;
 346   AliInfo(Form("Number of cells on Left side  =   %d",  ncellsL));
 347
 348 }
 349
 350 //_____________________________________________________________________________
 351 void AliVZEROv2::BuildGeometry()
 352 {
 353
 354 // Builds simple ROOT TNode geometry for event display
 355
 356   AliDebug(2,"VZERO BuildGeometry");
 357
 358   TNode *top;
 359
 360   TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
 361   TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4, *v0Rnode5;
 362   TNode *v0Lnode, *v0Lnode0;
 363   TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4, *v0Lnode5, *v0Lnode6;
 364
 365   const int kColorVZERO  = kGreen;
 366
 367   top = gAlice->GetGeometry()->GetNode("alice");
 368
 369   Float_t  height1, height2, height3, height4, height5;
 370   Float_t  height;
 371   Float_t  theta;
 372
 373   Float_t  halfThickQua;
 374   Float_t  zdet;
 375   Float_t  r0, r5;
 376   Float_t  pi = TMath::Pi();
 377
 378   height1           =     1.82;           // height of cell 1, in cm
 379   height2           =     3.81;           // height of cell 2, in cm
 380   height3           =     4.72;           // height of cell 3, in cm
 381   height4           =     7.12;           // height of cell 4, in cm
 382   height5           =    10.83;           // height of cell 5, in cm
 383
 384   theta             =    pi/6.0/2.0;
 385
 386   halfThickQua    =    fThickness1/2.0;
 387
 388   zdet              =    90.0 - 0.6 - fThickness/2.0;
 389   r0                =    4.05;
 390   height            =    height1 + height2 + height3 + height4 + height5;
 391   r5                =    r0 + height;
 392
 393   Int_t     ndiv    =     1;
 394
 395   Float_t   partube[3];
 396
 397   partube[0] =  r0 - 0.2;
 398   partube[1] =  r5 + 1.0;
 399   partube[2] = fThickness/2.0;
 400
 401   TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 402
 403   top->cd();
 404
 405   v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
 406
 407   v0Rnode->SetLineColor(kYellow);
 408   fNodes->Add(v0Rnode);
 409   v0Rnode->SetVisibility(2);
 410
 411 // Rondelles de carbone (epaisseur 2 mm) de maintien des cellules ...
 412
 413   Float_t  lidThickness = 0.2;
 414
 415   partube[0] =   r0;
 416   partube[1] =   r5;
 417   partube[2] =   +lidThickness/2.0;
 418
 419   TTUBE  *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 420
 421   v0Rnode->cd();
 422   v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 423   v0Rnode6->SetLineColor(kYellow);
 424   fNodes->Add(v0Rnode6);
 425   v0Rnode->cd();
 426   v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 427   v0Rnode7->SetLineColor(kYellow);
 428   fNodes->Add(v0Rnode7);
 429
 430   partube[0] =   r0 - 0.2;
 431   partube[1] =   r0;
 432   partube[2] =   +fThickness/2.0;
 433
 434   TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 435
 436   v0Rnode->cd();
 437   v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
 438   v0Rnode8->SetLineColor(kYellow);
 439   fNodes->Add(v0Rnode8);
 440
 441   partube[0] =   r5;
 442   partube[1] =   r5 + 1.0;
 443   partube[2] =   +fThickness/2.0;
 444
 445   TTUBE  *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 446
 447   v0Rnode->cd();
 448   v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
 449   v0Rnode9->SetLineColor(kYellow);
 450   fNodes->Add(v0Rnode9);
 451
 452   Float_t   partubs[5];
 453
 454   partubs[0]      =  r0;
 455   partubs[1]      =  r5;
 456   partubs[2]      =  fThickness/2.0;
 457   partubs[3]      =  90.0-15.0;
 458   partubs[4]      = 120.0-15.0;
 459
 460   TTUBS  *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 461                                                   partubs[3], partubs[4]);
 462
 463   v0R0->SetNumberOfDivisions(ndiv);
 464
 465   Float_t   r1     =  r0 + height1;
 466   Float_t   offset = fThickness/2.0 - lidThickness - fThickness1/2.0;
 467   Float_t   offsetFibers = 1.0;
 468
 469   partubs[0]     =  r0;
 470   partubs[1]     =  r1;
 471   partubs[2]     =  fThickness1/2.0;
 472
 473   TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 474                                                   partubs[3], partubs[4]);
 475
 476   v0R1->SetNumberOfDivisions(ndiv);
 477
 478   Float_t   r2   =  r1 + height2;
 479
 480   partubs[0]     =  r1;
 481   partubs[1]     =  r2;
 482
 483   TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 484                                                   partubs[3], partubs[4]);
 485
 486   v0R2->SetNumberOfDivisions(ndiv);
 487
 488   Float_t   r3   =  r2 + height3;
 489
 490   partubs[0]     =  r2;
 491   partubs[1]     =  r3;
 492
 493   TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 494                                                   partubs[3], partubs[4]);
 495   v0R3->SetNumberOfDivisions(ndiv);
 496
 497   Float_t   r4   =  r3 + height4;
 498
 499   partubs[0]     =  r3;
 500   partubs[1]     =  r4;
 501
 502   TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 503                                                   partubs[3], partubs[4]);
 504
 505   v0R4->SetNumberOfDivisions(ndiv);
 506
 507   partubs[0]     =  r4;
 508   partubs[1]     =  r5;
 509   partubs[3]     =  90.0-15.0;
 510   partubs[4]     = 120.0-30.0;
 511
 512   TTUBS *v0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 513                                                   partubs[3], partubs[4]);
 514
 515   v0R5->SetNumberOfDivisions(ndiv);
 516
 517   partubs[3]     = 120.0-30.0;
 518   partubs[4]     = 120.0-15.0;
 519
 520   TTUBS *v0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 521                                                   partubs[3], partubs[4]);
 522
 523   v0R6->SetNumberOfDivisions(ndiv);
 524
 525   Float_t  phi;
 526   Float_t  phiDeg= 180./6.;
 527
 528   Int_t    ndetR = 1;
 529
 530   char     nameNode[12];
 531
 532   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 533
 534   {
 535
 536     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 537
 538     sprintf(nameNode,"SUBDER%d",ndetR);
 539
 540     v0Rnode->cd();
 541     v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
 542     v0Rnode0->SetLineColor(kYellow);
 543     fNodes->Add(v0Rnode0);
 544     ndetR++;
 545
 546     sprintf(nameNode,"SUBDER%d",ndetR);
 547     v0Rnode0->cd();
 548     v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset,0);
 549     v0Rnode1->SetLineColor(kColorVZERO);
 550     fNodes->Add(v0Rnode1);
 551     ndetR++;
 552
 553     sprintf(nameNode,"SUBDER%d",ndetR);
 554     v0Rnode0->cd();
 555     v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset + offsetFibers,0);
 556     v0Rnode2->SetLineColor(kColorVZERO);
 557     fNodes->Add(v0Rnode2);
 558     ndetR++;
 559
 560     sprintf(nameNode,"SUBDER%d",ndetR);
 561     v0Rnode0->cd();
 562     v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset + 2.0*offsetFibers,0);
 563     v0Rnode3->SetLineColor(kColorVZERO);
 564     fNodes->Add(v0Rnode3);
 565     ndetR++;
 566
 567     sprintf(nameNode,"SUBDER%d",ndetR);
 568     v0Rnode0->cd();
 569     v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset + 2.0*offsetFibers,0);
 570     v0Rnode4->SetLineColor(kColorVZERO);
 571     fNodes->Add(v0Rnode4);
 572     ndetR++;
 573
 574     sprintf(nameNode,"SUBDER%d",ndetR);
 575     v0Rnode0->cd();
 576     v0Rnode5 = new TNode(nameNode,nameNode,v0R5,0.0,0.0, -offset + 2.0*offsetFibers,0);
 577     v0Rnode5->SetLineColor(kColorVZERO);
 578     fNodes->Add(v0Rnode5);
 579     ndetR++;
 580
 581     sprintf(nameNode,"SUBDER%d",ndetR);
 582     v0Rnode0->cd();
 583     v0Rnode6 = new TNode(nameNode,nameNode,v0R6,0.0,0.0, -offset + 2.0*offsetFibers,0);
 584     v0Rnode6->SetLineColor(kColorVZERO);
 585     fNodes->Add(v0Rnode6);
 586     ndetR++;
 587
 588     v0Rnode0->SetVisibility(2);
 589
 590   }
 591
 592 // Left side of VZERO :
 593
 594   Float_t   r0Left      =   4.3;
 595   Float_t   height1Left =   2.6;
 596   Float_t   height2Left =   4.1;
 597   Float_t   height3Left =   6.4;
 598   Float_t   height4Left =  10.2;
 599   Float_t   height5Left =  16.9;
 600   Float_t   heightLeft  = height1Left + height2Left + height3Left
 601                                         + height4Left + height5Left;
 602   Float_t   r5Left      = r0Left  + heightLeft;
 603
 604   partube[0] =  r0Left;
 605   partube[1] =  r5Left;
 606   partube[2] =  fThickness1/2.0;
 607
 608   TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 609
 610   top->cd();
 611
 612   v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
 613
 614   v0Lnode->SetLineColor(kBlue);
 615   fNodes->Add(v0Lnode);
 616
 617   v0Lnode->SetVisibility(2);
 618
 619   partubs[0]      =  r0Left;
 620   partubs[1]      =  r5Left;
 621   partubs[2]      =  fThickness1/2.0;
 622   partubs[3]      =  90.0-15.0;
 623   partubs[4]      = 120.0-15.0;
 624
 625   TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 626                                                   partubs[3], partubs[4]);
 627
 628   v0L0->SetNumberOfDivisions(ndiv);
 629   v0L0->SetLineColor(7);
 630
 631   Float_t   offsetLeft;
 632   offsetLeft    = - fThickness1/2.0;
 633
 634   Float_t   r1Left =  r0Left + height1Left;
 635
 636   partubs[0]     =  r0Left;
 637   partubs[1]     =  r1Left;
 638
 639   TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 640                                                   partubs[3], partubs[4]);
 641
 642   v0L1->SetNumberOfDivisions(ndiv);
 643
 644   Float_t   r2Left =  r1Left + height2Left;
 645
 646   partubs[0]     =  r1Left;
 647   partubs[1]     =  r2Left;
 648
 649   TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 650                                                   partubs[3], partubs[4]);
 651
 652   v0L2->SetNumberOfDivisions(ndiv);
 653
 654   Float_t   r3Left  =  r2Left + height3Left;
 655
 656   partubs[0]     =  r2Left;
 657   partubs[1]     =  r3Left;
 658
 659   TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 660                                                   partubs[3], partubs[4]);
 661   v0L3->SetNumberOfDivisions(ndiv);
 662
 663   Float_t   r4Left  =   r3Left + height4Left;
 664
 665   partubs[0]     =  r3Left;
 666   partubs[1]     =  r4Left;
 667
 668   TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 669                                                   partubs[3], partubs[4]);
 670
 671   v0L4->SetNumberOfDivisions(ndiv);
 672
 673   partubs[0]     =  r4Left;
 674   partubs[1]     =  r5Left;
 675   partubs[3]     =  90.0-15.0;
 676   partubs[4]     = 120.0-30.0;
 677
 678   TTUBS *v0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 679                                                   partubs[3], partubs[4]);
 680
 681
 682   v0L5->SetNumberOfDivisions(ndiv);
 683
 684   partubs[3]     = 120.0-30.0;
 685   partubs[4]     = 120.0-15.0;
 686
 687   TTUBS *v0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 688                                                   partubs[3], partubs[4]);
 689
 690   v0L6->SetNumberOfDivisions(ndiv);
 691
 692   Int_t    ndetL   = 1;
 693
 694   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 695
 696   {
 697
 698     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 699
 700
 701     sprintf(nameNode,"SUBDEL%d",ndetL);
 702
 703     v0Lnode->cd();
 704     v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
 705     v0Lnode0->SetLineColor(kColorVZERO);
 706     fNodes->Add(v0Lnode0);
 707     ndetL++;
 708
 709     sprintf(nameNode,"SUBDEL%d",ndetL);
 710     v0Lnode0->cd();
 711     v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
 712     v0Lnode1->SetLineColor(kColorVZERO);
 713     fNodes->Add(v0Lnode1);
 714     ndetL++;
 715
 716     sprintf(nameNode,"SUBDEL%d",ndetL);
 717     v0Lnode0->cd();
 718     v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
 719     v0Lnode2->SetLineColor(kColorVZERO);
 720     fNodes->Add(v0Lnode2);
 721     ndetL++;
 722
 723
 724     sprintf(nameNode,"SUBDEL%d",ndetL);
 725     v0Lnode0->cd();
 726     v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
 727     v0Lnode3->SetLineColor(kColorVZERO);
 728     fNodes->Add(v0Lnode3);
 729     ndetL++;
 730
 731     sprintf(nameNode,"SUBDEL%d",ndetL);
 732     v0Lnode0->cd();
 733     v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);
 734     v0Lnode4->SetLineColor(kColorVZERO);
 735     fNodes->Add(v0Lnode4);
 736     ndetL++;
 737
 738     sprintf(nameNode,"SUBDEL%d",ndetL);
 739     v0Lnode0->cd();
 740     v0Lnode5 = new TNode(nameNode,nameNode,v0L5,0.0,0.0, 0.0,0);
 741     v0Lnode5->SetLineColor(kColorVZERO);
 742     fNodes->Add(v0Lnode5);
 743     ndetL++;
 744
 745     sprintf(nameNode,"SUBDEL%d",ndetL);
 746     v0Lnode0->cd();
 747     v0Lnode6 = new TNode(nameNode,nameNode,v0L6,0.0,0.0, 0.0,0);
 748     v0Lnode6->SetLineColor(kColorVZERO);
 749     fNodes->Add(v0Lnode6);
 750     ndetL++;
 751
 752     v0Lnode0->SetVisibility(2);
 753
 754   }
 755
 756 }
 757
 758 //_____________________________________________________________________________
 759 void AliVZEROv2::CreateMaterials()
 760 {
 761
 762 // Creates materials used for geometry
 763
 764     AliDebug(2,"VZERO create materials");
 765
 766 /*
 767     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,
 768                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 769
 770
 771     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,
 772                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 773
 774     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 775                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 776                                  1.662295, 1.68337 };
 777
 778     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 779                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 780
 781     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 782
 783
 784     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 785
 786
 787     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,
 788                                1e-4,1e-4,1e-4,1e-4 };
 789     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 790
 791 */
 792
 793     Int_t *idtmed = fIdtmed->GetArray()-2999;
 794
 795
 796 //  Parameters related to Quarz (SiO2) :
 797
 798     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 799     Int_t nlmatqua;
 800
 801     aqua[0]    = 28.09;
 802     aqua[1]    = 16.;
 803     zqua[0]    = 14.;
 804     zqua[1]    = 8.;
 805     densqua    = 2.64;
 806     nlmatqua   = -2;
 807     wmatqua[0] = 1.;
 808     wmatqua[1] = 2.;
 809
 810 // Parameters  related to aluminum sheets :
 811
 812     Float_t  aal   = 26.98;
 813     Float_t  zal   = 13.00;
 814     Float_t  densal=   2.7;
 815     Float_t  radlal=   8.9;
 816
 817 // Parameters  related to scintillator CH :
 818
 819     Float_t ascin[2] = {1.00794,12.011};
 820     Float_t zscin[2] = {1.,6.};
 821     Float_t wscin[2] = {1.,1.};
 822     Float_t denscin  = 1.032;
 823
 824 // AIR
 825
 826     Float_t aAir[4]={12.,14.,16.,36.};
 827     Float_t zAir[4]={6.,7.,8.,18.};
 828     Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 829     Float_t dAir = 1.20479E-3;
 830
 831 //  Definition of materials :
 832
 833     AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
 834     AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
 835     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 836     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 837     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 838     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 839
 840     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 841
 842
 843     Int_t   iSXFLD = gAlice->Field()->Integ();
 844     Float_t sXMGMX = gAlice->Field()->Max();
 845
 846     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 847
 848     tmaxfd = 10.;
 849     stemax = 0.1;
 850     deemax = 0.1;
 851     epsil  = 0.001;
 852     stmin  = 0.001;
 853
 854 //  Active Air :
 855     AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
 856               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 857
 858 //  Inactive air :
 859
 860     AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
 861               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 862
 863     AliMedium(2, "CARBON$ ", 2,  1, iSXFLD, sXMGMX,
 864               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 865
 866     AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
 867               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 868
 869     AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
 870               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 871
 872
 873     AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
 874               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 875
 876     AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 877
 878     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 879     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 880     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 881     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 882
 883     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 884     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 885     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 886     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 887
 888     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 889     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 890     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 891     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 892     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 893     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 894
 895     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 896     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 897     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 898     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 899
 900     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 901     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 902     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 903     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 904     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 905     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 906
 907     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 908     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 909     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 910     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 911     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 912     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 913
 914
 915 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 916 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 917
 918 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 919 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 920
 921 }
 922
 923 //_____________________________________________________________________________
 924 void AliVZEROv2::DrawModule() const
 925 {
 926
 927 //  Drawing is done in DrawVZERO.C
 928
 929    AliDebug(2,"VZERO DrawModule");
 930
 931 }
 932
 933 //_____________________________________________________________________________
 934 void AliVZEROv2::Init()
 935 {
 936 // Initialises version 2 of the VZERO Detector
 937 // Just prints an information message
 938
 939    AliInfo(Form("VZERO version %d initialized",IsVersion()));
 940
 941 //   gMC->SetMaxStep(fMaxStepAlu);
 942 //   gMC->SetMaxStep(fMaxStepQua);
 943
 944     AliVZERO::Init();
 945
 946 }
 947
 948
 949 //_____________________________________________________________________________
 950 void AliVZEROv2::StepManager()
 951 {
 952
 953 // Step Manager, called at each step
 954
 955      Int_t     copy;
 956      static    Int_t   vol[4];
 957      static    Float_t hits[19];
 958      static    Float_t eloss, tlength;
 959
 960      TLorentzVector pos;
 961      TLorentzVector mom;
 962
 963      Float_t        theta;
 964      Float_t        phi;
 965      Float_t        kRaddeg = 180.0/TMath::Pi();
 966      Float_t        ringNumber;
 967
 968      Int_t          ipart;
 969      Float_t        destep, step;
 970
 971
 972 //   We keep only charged tracks :
 973
 974      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 975
 976
 977      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 978      vol[2]    = gMC->CurrentVolID(copy);
 979      vol[3]    = copy;
 980
 981      static Int_t idV0R1 = gMC->VolId("V0R1");
 982      static Int_t idV0L1 = gMC->VolId("V0L1");
 983      static Int_t idV0R2 = gMC->VolId("V0R2");
 984      static Int_t idV0L2 = gMC->VolId("V0L2");
 985      static Int_t idV0R3 = gMC->VolId("V0R3");
 986      static Int_t idV0L3 = gMC->VolId("V0L3");
 987      static Int_t idV0R4 = gMC->VolId("V0R4");
 988      static Int_t idV0L4 = gMC->VolId("V0L4");
 989      static Int_t idV0R5 = gMC->VolId("V0R5");
 990      static Int_t idV0L5 = gMC->VolId("V0L5");
 991      static Int_t idV0R6 = gMC->VolId("V0R6");
 992      static Int_t idV0L6 = gMC->VolId("V0L6");
 993
 994      if      ( gMC->CurrentVolID(copy) == idV0R1 ||
 995                gMC->CurrentVolID(copy) == idV0L1 )
 996                ringNumber = 1.0;
 997      else if ( gMC->CurrentVolID(copy) == idV0R2 ||
 998                gMC->CurrentVolID(copy) == idV0L2 )
 999                ringNumber = 2.0;
1000      else if ( gMC->CurrentVolID(copy) == idV0R3 ||
1001                gMC->CurrentVolID(copy) == idV0L3 )
1002                ringNumber = 3.0;
1003      else if ( gMC->CurrentVolID(copy) == idV0R4 ||
1004                gMC->CurrentVolID(copy) == idV0L4 )
1005                ringNumber = 4.0;
1006      else if ( gMC->CurrentVolID(copy) == idV0R5 ||
1007                gMC->CurrentVolID(copy) == idV0L5 ||
1008                gMC->CurrentVolID(copy) == idV0R6 ||
1009                gMC->CurrentVolID(copy) == idV0L6 )
1010                ringNumber = 5.0;
1011      else
1012                ringNumber = 0.0;
1013
1014      if  (  ringNumber > 0.5  ) {
1015
1016         destep    = gMC->Edep();
1017         step      = gMC->TrackStep();
1018         eloss    += destep;
1019         tlength  += step;
1020
1021         if  ( gMC->IsTrackEntering()  )  {
1022
1023             gMC->TrackPosition(pos);
1024
1025             gMC->TrackMomentum(mom);
1026             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1027             Double_t pt   = TMath::Sqrt(tc);
1028             Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1029             theta   = Float_t(TMath::ATan2(pt,Double_t(mom[2])))*kRaddeg;
1030             phi     = Float_t(TMath::ATan2(Double_t(pos[1]),Double_t(pos[0])))*kRaddeg;
1031
1032 ////////////////////////////////////////////////////////////////////////////
1033      Float_t angle1 = Float_t(TMath::ATan2(Double_t(pos[1]),Double_t(pos[0])))*kRaddeg;
1034      if(angle1 < 0.0) angle1 = angle1 + 360.0;
1035      //PH     AliDebug(2,Form("RingNumber, copy, phi1  = %f %d %f \n", ringNumber,vol[1],angle1));
1036 ////////////////////////////////////////////////////////////////////////////
1037
1038
1039             ipart  = gMC->TrackPid();
1040
1041             hits[0]  = pos[0];
1042             hits[1]  = pos[1];
1043             hits[2]  = pos[2];
1044             hits[3]  =  Float_t (ipart);
1045
1046             hits[4]  = gMC->TrackTime();
1047             hits[5]  = gMC->TrackCharge();
1048             hits[6]  = theta;
1049             hits[7]  = phi;
1050             hits[8]  = ringNumber;
1051
1052             hits[9]  = pt;
1053             hits[10] = pmom;
1054             hits[11] = mom[0];
1055             hits[12] = mom[1];
1056             hits[13] = mom[2];
1057
1058             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
1059             hits[14] = par->Vx();
1060             hits[15] = par->Vy();
1061             hits[16] = par->Vz();
1062
1063             tlength  = 0.0;
1064             eloss    = 0.0;
1065
1066          }
1067
1068          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1069
1070          hits[17] =   eloss;
1071          hits[18] = tlength;
1072
1073          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1074
1075          tlength  = 0.0;
1076          eloss    = 0.0;
1077
1078          }
1079     }
1080
1081 }
1082
1083 //_____________________________________________________________________________
1084 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1085 {
1086
1087 //  Adds a VZERO hit
1088
1089   TClonesArray &lhits = *fHits;
1090   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1091 }
1092
1093 //_____________________________________________________________________________
1094 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
1095 {
1096
1097 //  Adds a VZERO digit
1098
1099    TClonesArray  &ldigits = *fDigits;
1100    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1101 }
1102
1103 //_____________________________________________________________________________
1104 void AliVZEROv2::MakeBranch(Option_t *option)
1105 {
1106
1107 // Creates new branches in the current Root Tree
1108
1109   char branchname[10];
1110   sprintf(branchname,"%s",GetName());
1111   AliDebug(2,Form("fBufferSize = %d",fBufferSize));
1112
1113   const char *cH = strstr(option,"H");
1114
1115   if (fHits   && TreeH() && cH) {
1116     TreeH()->Branch(branchname,&fHits, fBufferSize);
1117     AliDebug(2,Form("Making Branch %s for hits",branchname));
1118   }
1119
1120   const char *cD = strstr(option,"D");
1121
1122   if (fDigits   && fLoader->TreeD() && cD) {
1123     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1124     AliDebug(2,Form("Making Branch %s for digits",branchname));
1125   }
1126
1127 }