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 // --- Standard libraries ---
  31 #include <Riostream.h>
  32 #include <stdlib.h>
  33 #include <string.h>
  34
  35 // --- ROOT libraries ---
  36 #include <TClonesArray.h>
  37 #include <TGeant3.h>
  38 #include <TGeometry.h>
  39 #include <TLorentzVector.h>
  40 #include <TMath.h>
  41 #include <TNode.h>
  42 #include <TObjectTable.h>
  43 #include <TTUBE.h>
  44 #include <TTUBS.h>
  45 #include <TVirtualMC.h>
  46 #include <TParticle.h>
  47
  48 // --- AliRoot header files ---
  49 #include "AliRun.h"
  50 #include "AliMC.h"
  51 #include "AliConst.h"
  52 #include "AliMagF.h"
  53 #include "AliVZEROLoader.h"
  54 #include "AliVZEROdigit.h"
  55 #include "AliVZEROhit.h"
  56 #include "AliVZEROv2.h"
  57
  58 ClassImp(AliVZEROv2)
  59
  60 //_____________________________________________________________________________
  61 AliVZEROv2:: AliVZEROv2():AliVZERO()
  62 {
  63 // Standard default constructor
  64 }
  65
  66 //_____________________________________________________________________________
  67 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  68  AliVZERO(name,title)
  69 {
  70
  71 // Standard constructor for V-zero Detector  version 2
  72
  73   Int_t i;
  74
  75   printf("\n");
  76   for(i=0;i<26;i++) printf("*");
  77   printf(" Create VZERO object ");
  78   for(i=0;i<26;i++) printf("*");
  79   printf("\n");
  80
  81 }
  82
  83 //_____________________________________________________________________________
  84 void AliVZEROv2::CreateGeometry()
  85 {
  86
  87 // Creates the GEANT geometry of the V-zero Detector  version 2
  88
  89   Int_t i;
  90
  91   printf("\n");
  92   for(i=0;i<26;i++) printf("*");
  93   printf(" Create VZERO Geometry ");
  94   for(i=0;i<26;i++) printf("*");
  95   printf("\n");
  96
  97   Int_t    *idtmed = fIdtmed->GetArray()-2999;
  98
  99   Int_t    ndetR = 1;
 100   Int_t    ndetL = 1;
 101
 102   Int_t    ncellsR = 1;
 103   Int_t    ncellsL = 1;
 104
 105   Int_t    idrotm[999];
 106
 107   Float_t  height1, height2, height3, height4, height5;
 108   Float_t  height;
 109   Float_t  theta;
 110
 111   Float_t  halfThickQua;
 112
 113   Float_t  zdet;
 114   Float_t  r0, r5;
 115   Float_t  pi = TMath::Pi();
 116
 117   height1     =     1.82;         // height of cell 1, in cm
 118   height2     =     3.81;         // height of cell 2, in cm
 119   height3     =     4.72;         // height of cell 3, in cm
 120   height4     =     7.12;         // height of cell 4, in cm
 121   height5     =    10.83;         // height of cell 5, in cm
 122
 123   theta       = pi/6.0/2.0;       // half angular opening = 15 degrees
 124
 125   halfThickQua= fThickness1/2.0;  // half thickness of elementary cell (inner ring)
 126
 127   zdet        =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
 128   r0          =    4.05;          // closest distance to center of the beam pipe
 129   height      =    height1 + height2 + height3 + height4 + height5;
 130   r5          =    r0 + height;
 131
 132 // Creation of mother volume v0LE - left part - :
 133 // Entrance face at  +350.0 cm  (new coordinate system) ...
 134
 135    Float_t   partube[3];
 136
 137    partube[0] =  4.3;
 138    partube[1] = 45.0;
 139    partube[2] = fThickness1/2.0;
 140
 141    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 142
 143 // Creation of five rings - left part - :
 144 // Entrance face at +350.0 cm  (new coordinate system) ...
 145
 146 // Mother volume v0L0 in which will be set 5 scintillator cells
 147
 148   Float_t   partubs[5];
 149
 150   Float_t   r0Left      =   4.3;
 151   Float_t   height1Left =   2.6;
 152   Float_t   height2Left =   4.1;
 153   Float_t   height3Left =   6.4;
 154   Float_t   height4Left =  10.2;
 155   Float_t   height5Left =  16.9;
 156   Float_t   heightLeft  = height1Left + height2Left + height3Left
 157                                       + height4Left + height5Left;
 158   Float_t   r5Left      = r0Left  + heightLeft;
 159
 160   partubs[0]      =  r0Left;
 161   partubs[1]      =  r5Left;
 162   partubs[2]      =  fThickness1/2.0;
 163   partubs[3]      =  90.0-15.0;
 164   partubs[4]      = 120.0-15.0;
 165
 166   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 167
 168   Float_t  r1Left =  r0Left + height1Left;
 169
 170   partubs[0]     =  r0Left;
 171   partubs[1]     =  r1Left;
 172
 173   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 174   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 175
 176   Float_t   r2Left  =   r1Left + height2Left;
 177
 178   partubs[0]     =  r1Left;
 179   partubs[1]     =  r2Left;
 180
 181   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 182   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 183
 184   Float_t   r3Left =   r2Left + height3Left;
 185
 186   partubs[0]     =  r2Left;
 187   partubs[1]     =  r3Left;
 188
 189   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 190   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 191
 192   Float_t   r4Left =  r3Left + height4Left;
 193
 194   partubs[0]     =  r3Left;
 195   partubs[1]     =  r4Left;
 196
 197   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 198   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 199
 200   partubs[0]     =  r4Left;
 201   partubs[1]     =  r5Left;
 202   partubs[3]     =  90.0-15.0;
 203   partubs[4]     = 120.0-30.0;
 204
 205   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 206   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 207
 208   partubs[3]     = 120.0-30.0;
 209   partubs[4]     = 120.0-15.0;
 210
 211   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 212   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 213
 214
 215 // Creation of mother volume v0RI - right part - :
 216
 217   partube[0] = r0 - 0.2;
 218   partube[1] = r5 + 1.0;
 219   partube[2] = fThickness/2.0;
 220
 221   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 222
 223 // Creation of  carbon lids (3 mm thick) to keep v0RI box shut...
 224
 225   partube[0] =   r0;
 226   partube[1] =   r5;
 227   partube[2] =   +0.3/2.0;
 228
 229   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 230   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 231   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 232
 233 // Creation of aluminum rings to maintain the v0RI pieces ...
 234
 235   partube[0] =   r0 - 0.2;
 236   partube[1] =   r0;
 237   partube[2] =   +fThickness/2.0;
 238
 239   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 240   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 241
 242   partube[0] =   r5;
 243   partube[1] =   r5 + 1.0;
 244   partube[2] =   +fThickness/2.0;
 245
 246   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 247   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 248
 249 // Mother volume v0R0 in which will be set 5  scintillator cells
 250
 251   partubs[0]      =  r0;
 252   partubs[1]      =  r5;
 253   partubs[2]      =  fThickness/2.0;
 254   partubs[3]      =  90.0-15.0;
 255   partubs[4]      = 120.0-15.0;
 256
 257   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 258
 259 // Elementary cell of ring 1 :
 260 // (the cells will be shifted by 3 mm to output fibers)
 261
 262   Float_t   offsetFibers =  0.7;
 263   Float_t   offset        =  fThickness/2.0 - 0.3 - fThickness1/2.0;
 264   Float_t   r1            =  r0 + height1;
 265
 266   partubs[0]     =  r0;
 267   partubs[1]     =  r1;
 268   partubs[2]     =  fThickness1/2.0;
 269
 270   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 271   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 272
 273 // Elementary cell of ring 2 :
 274
 275   Float_t   r2   =  r1 + height2;
 276
 277   partubs[0]     =  r1;
 278   partubs[1]     =  r2;
 279
 280   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 281   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
 282
 283
 284 // Elementary cell of ring 3 :
 285
 286   Float_t   r3   =  r2 + height3;
 287
 288   partubs[0]     =  r2;
 289   partubs[1]     =  r3;
 290
 291   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 292   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset + 2.0 * offsetFibers, 0,"ONLY");
 293
 294 // Elementary cell of ring 4 :
 295
 296   Float_t   r4   =  r3 + height4 ;
 297
 298   partubs[0]     =  r3;
 299   partubs[1]     =  r4;
 300
 301   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 302   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  -offset + 3.0 * offsetFibers, 0,"ONLY");
 303
 304 // Elementary cells of ring 5 :
 305
 306   partubs[0]     =  r4;
 307   partubs[1]     =  r5;
 308   partubs[3]     =  90.0-15.0;
 309   partubs[4]     = 120.0-30.0;
 310
 311   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 312   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , -offset + 4.0 * offsetFibers, 0,"ONLY");
 313
 314   partubs[3]     = 120.0-30.0;
 315   partubs[4]     = 120.0-15.0;
 316
 317   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 318   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  -offset + 4.0 * offsetFibers, 0,"ONLY");
 319
 320   Float_t  phiDeg = 180./6.;
 321
 322 // Right part :
 323
 324   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 325       {
 326         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 327         gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
 328                           0.0,0.0,idrotm[902],"ONLY");
 329         ndetR++;
 330        }
 331
 332   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
 333
 334   ncellsR = (ndetR - 1) * 6;
 335   printf("    Number of cells on Right side =   %d\n",  ncellsR);
 336
 337 // Left part :
 338
 339   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 340       {
 341         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 342         gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
 343                           0.0,0.0,idrotm[902],"ONLY");
 344         ndetL++;
 345        }
 346
 347   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
 348
 349   ncellsL = (ndetL - 1) * 6;
 350   printf("    Number of cells on Left side  =   %d\n",  ncellsL);
 351   for(i=0;i<75;i++) printf("*");
 352   printf("\n");
 353
 354 }
 355
 356 //_____________________________________________________________________________
 357 void AliVZEROv2::BuildGeometry()
 358 {
 359
 360 // Builds simple ROOT TNode geometry for event display
 361
 362   Int_t i;
 363
 364   printf("\n");
 365   for(i=0;i<30;i++) printf("*");
 366   printf(" VZERO BuildGeometry ");
 367   for(i=0;i<30;i++) printf("*");
 368   printf("\n");
 369
 370   TNode *top;
 371
 372   TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
 373   TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4, *v0Rnode5;
 374   TNode *v0Lnode, *v0Lnode0;
 375   TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4, *v0Lnode5, *v0Lnode6;
 376
 377   const int kColorVZERO  = kGreen;
 378
 379   top = gAlice->GetGeometry()->GetNode("alice");
 380
 381   Float_t  height1, height2, height3, height4, height5;
 382   Float_t  height;
 383   Float_t  theta;
 384
 385   Float_t  halfThickQua;
 386   Float_t  zdet;
 387   Float_t  r0, r5;
 388   Float_t  pi = TMath::Pi();
 389
 390   height1           =     1.82;           // height of cell 1, in cm
 391   height2           =     3.81;           // height of cell 2, in cm
 392   height3           =     4.72;           // height of cell 3, in cm
 393   height4           =     7.12;           // height of cell 4, in cm
 394   height5           =    10.83;           // height of cell 5, in cm
 395
 396   theta             =    pi/6.0/2.0;
 397
 398   halfThickQua    =    fThickness1/2.0;
 399
 400   zdet              =    90.0 - 0.6 - fThickness/2.0;
 401   r0                =    4.05;
 402   height            =    height1 + height2 + height3 + height4 + height5;
 403   r5                =    r0 + height;
 404
 405   Int_t     ndiv    =     1;
 406
 407   Float_t   partube[3];
 408
 409   partube[0] =  r0 - 0.2;
 410   partube[1] =  r5 + 1.0;
 411   partube[2] = fThickness/2.0;
 412
 413   TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 414
 415   top->cd();
 416
 417   v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
 418
 419   v0Rnode->SetLineColor(kYellow);
 420   fNodes->Add(v0Rnode);
 421   v0Rnode->SetVisibility(2);
 422
 423 // Rondelles de carbone (epaisseur 3 mm) de maintien des cellules ...
 424
 425   partube[0] =   r0;
 426   partube[1] =   r5;
 427   partube[2] =   +0.3/2.0;
 428
 429   TTUBE  *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 430
 431   v0Rnode->cd();
 432   v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 433   v0Rnode6->SetLineColor(kYellow);
 434   fNodes->Add(v0Rnode6);
 435   v0Rnode->cd();
 436   v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 437   v0Rnode7->SetLineColor(kYellow);
 438   fNodes->Add(v0Rnode7);
 439
 440   partube[0] =   r0 - 0.2;
 441   partube[1] =   r0;
 442   partube[2] =   +fThickness/2.0;
 443
 444   TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 445
 446   v0Rnode->cd();
 447   v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
 448   v0Rnode8->SetLineColor(kYellow);
 449   fNodes->Add(v0Rnode8);
 450
 451   partube[0] =   r5;
 452   partube[1] =   r5 + 1.0;
 453   partube[2] =   +fThickness/2.0;
 454
 455   TTUBE  *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 456
 457   v0Rnode->cd();
 458   v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
 459   v0Rnode9->SetLineColor(kYellow);
 460   fNodes->Add(v0Rnode9);
 461
 462   Float_t   partubs[5];
 463
 464   partubs[0]      =  r0;
 465   partubs[1]      =  r5;
 466   partubs[2]      =  fThickness/2.0;
 467   partubs[3]      =  90.0-15.0;
 468   partubs[4]      = 120.0-15.0;
 469
 470   TTUBS  *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 471                                                   partubs[3], partubs[4]);
 472
 473   v0R0->SetNumberOfDivisions(ndiv);
 474
 475   Float_t   r1     =  r0 + height1;
 476   Float_t   offset = fThickness/2.0 - 0.3 - fThickness1/2.0;
 477   Float_t   offsetFibers = 0.7;
 478
 479   partubs[0]     =  r0;
 480   partubs[1]     =  r1;
 481   partubs[2]     =  fThickness1/2.0;
 482
 483   TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 484                                                   partubs[3], partubs[4]);
 485
 486   v0R1->SetNumberOfDivisions(ndiv);
 487
 488   Float_t   r2   =  r1 + height2;
 489
 490   partubs[0]     =  r1;
 491   partubs[1]     =  r2;
 492
 493   TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 494                                                   partubs[3], partubs[4]);
 495
 496   v0R2->SetNumberOfDivisions(ndiv);
 497
 498   Float_t   r3   =  r2 + height3;
 499
 500   partubs[0]     =  r2;
 501   partubs[1]     =  r3;
 502
 503   TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 504                                                   partubs[3], partubs[4]);
 505   v0R3->SetNumberOfDivisions(ndiv);
 506
 507   Float_t   r4   =  r3 + height4;
 508
 509   partubs[0]     =  r3;
 510   partubs[1]     =  r4;
 511
 512   TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 513                                                   partubs[3], partubs[4]);
 514
 515   v0R4->SetNumberOfDivisions(ndiv);
 516
 517   partubs[0]     =  r4;
 518   partubs[1]     =  r5;
 519   partubs[3]     =  90.0-15.0;
 520   partubs[4]     = 120.0-30.0;
 521
 522   TTUBS *v0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 523                                                   partubs[3], partubs[4]);
 524
 525   v0R5->SetNumberOfDivisions(ndiv);
 526
 527   partubs[3]     = 120.0-30.0;
 528   partubs[4]     = 120.0-15.0;
 529
 530   TTUBS *v0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 531                                                   partubs[3], partubs[4]);
 532
 533   v0R6->SetNumberOfDivisions(ndiv);
 534
 535   Float_t  phi;
 536   Float_t  phiDeg= 180./6.;
 537
 538   Int_t    ndetR = 1;
 539
 540   char     nameNode[12];
 541
 542   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 543
 544   {
 545
 546     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 547
 548     sprintf(nameNode,"SUBDER%d",ndetR);
 549
 550     v0Rnode->cd();
 551     v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
 552     v0Rnode0->SetLineColor(kYellow);
 553     fNodes->Add(v0Rnode0);
 554     ndetR++;
 555
 556     sprintf(nameNode,"SUBDER%d",ndetR);
 557     v0Rnode0->cd();
 558     v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset,0);
 559     v0Rnode1->SetLineColor(kColorVZERO);
 560     fNodes->Add(v0Rnode1);
 561     ndetR++;
 562
 563     sprintf(nameNode,"SUBDER%d",ndetR);
 564     v0Rnode0->cd();
 565     v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset + offsetFibers,0);
 566     v0Rnode2->SetLineColor(kColorVZERO);
 567     fNodes->Add(v0Rnode2);
 568     ndetR++;
 569
 570     sprintf(nameNode,"SUBDER%d",ndetR);
 571     v0Rnode0->cd();
 572     v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset + 2.0*offsetFibers,0);
 573     v0Rnode3->SetLineColor(kColorVZERO);
 574     fNodes->Add(v0Rnode3);
 575     ndetR++;
 576
 577     sprintf(nameNode,"SUBDER%d",ndetR);
 578     v0Rnode0->cd();
 579     v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset + 3.0*offsetFibers,0);
 580     v0Rnode4->SetLineColor(kColorVZERO);
 581     fNodes->Add(v0Rnode4);
 582     ndetR++;
 583
 584     sprintf(nameNode,"SUBDER%d",ndetR);
 585     v0Rnode0->cd();
 586     v0Rnode5 = new TNode(nameNode,nameNode,v0R5,0.0,0.0, -offset + 4.0*offsetFibers,0);
 587     v0Rnode5->SetLineColor(kColorVZERO);
 588     fNodes->Add(v0Rnode5);
 589     ndetR++;
 590
 591     sprintf(nameNode,"SUBDER%d",ndetR);
 592     v0Rnode0->cd();
 593     v0Rnode6 = new TNode(nameNode,nameNode,v0R6,0.0,0.0, -offset + 4.0*offsetFibers,0);
 594     v0Rnode6->SetLineColor(kColorVZERO);
 595     fNodes->Add(v0Rnode6);
 596     ndetR++;
 597
 598     v0Rnode0->SetVisibility(2);
 599
 600   }
 601
 602 // Left side of VZERO :
 603
 604   Float_t   r0Left      =   4.3;
 605   Float_t   height1Left =   2.6;
 606   Float_t   height2Left =   4.1;
 607   Float_t   height3Left =   6.4;
 608   Float_t   height4Left =  10.2;
 609   Float_t   height5Left =  16.9;
 610   Float_t   heightLeft  = height1Left + height2Left + height3Left
 611                                         + height4Left + height5Left;
 612   Float_t   r5Left      = r0Left  + heightLeft;
 613
 614   partube[0] =  r0Left;
 615   partube[1] =  r5Left;
 616   partube[2] =  fThickness1/2.0;
 617
 618   TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 619
 620   top->cd();
 621
 622   v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
 623
 624   v0Lnode->SetLineColor(kBlue);
 625   fNodes->Add(v0Lnode);
 626
 627   v0Lnode->SetVisibility(2);
 628
 629   partubs[0]      =  r0Left;
 630   partubs[1]      =  r5Left;
 631   partubs[2]      =  fThickness1/2.0;
 632   partubs[3]      =  90.0-15.0;
 633   partubs[4]      = 120.0-15.0;
 634
 635   TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 636                                                   partubs[3], partubs[4]);
 637
 638   v0L0->SetNumberOfDivisions(ndiv);
 639   v0L0->SetLineColor(7);
 640
 641   Float_t   offsetLeft;
 642   offsetLeft    = - fThickness1/2.0;
 643
 644   Float_t   r1Left =  r0Left + height1Left;
 645
 646   partubs[0]     =  r0Left;
 647   partubs[1]     =  r1Left;
 648
 649   TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 650                                                   partubs[3], partubs[4]);
 651
 652   v0L1->SetNumberOfDivisions(ndiv);
 653
 654   Float_t   r2Left =  r1Left + height2Left;
 655
 656   partubs[0]     =  r1Left;
 657   partubs[1]     =  r2Left;
 658
 659   TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 660                                                   partubs[3], partubs[4]);
 661
 662   v0L2->SetNumberOfDivisions(ndiv);
 663
 664   Float_t   r3Left  =  r2Left + height3Left;
 665
 666   partubs[0]     =  r2Left;
 667   partubs[1]     =  r3Left;
 668
 669   TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 670                                                   partubs[3], partubs[4]);
 671   v0L3->SetNumberOfDivisions(ndiv);
 672
 673   Float_t   r4Left  =   r3Left + height4Left;
 674
 675   partubs[0]     =  r3Left;
 676   partubs[1]     =  r4Left;
 677
 678   TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 679                                                   partubs[3], partubs[4]);
 680
 681   v0L4->SetNumberOfDivisions(ndiv);
 682
 683   partubs[0]     =  r4Left;
 684   partubs[1]     =  r5Left;
 685   partubs[3]     =  90.0-15.0;
 686   partubs[4]     = 120.0-30.0;
 687
 688   TTUBS *v0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 689                                                   partubs[3], partubs[4]);
 690
 691
 692   v0L5->SetNumberOfDivisions(ndiv);
 693
 694   partubs[3]     = 120.0-30.0;
 695   partubs[4]     = 120.0-15.0;
 696
 697   TTUBS *v0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 698                                                   partubs[3], partubs[4]);
 699
 700   v0L6->SetNumberOfDivisions(ndiv);
 701
 702   Int_t    ndetL   = 1;
 703
 704   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 705
 706   {
 707
 708     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 709
 710
 711     sprintf(nameNode,"SUBDEL%d",ndetL);
 712
 713     v0Lnode->cd();
 714     v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
 715     v0Lnode0->SetLineColor(kColorVZERO);
 716     fNodes->Add(v0Lnode0);
 717     ndetL++;
 718
 719     sprintf(nameNode,"SUBDEL%d",ndetL);
 720     v0Lnode0->cd();
 721     v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
 722     v0Lnode1->SetLineColor(kColorVZERO);
 723     fNodes->Add(v0Lnode1);
 724     ndetL++;
 725
 726     sprintf(nameNode,"SUBDEL%d",ndetL);
 727     v0Lnode0->cd();
 728     v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
 729     v0Lnode2->SetLineColor(kColorVZERO);
 730     fNodes->Add(v0Lnode2);
 731     ndetL++;
 732
 733
 734     sprintf(nameNode,"SUBDEL%d",ndetL);
 735     v0Lnode0->cd();
 736     v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
 737     v0Lnode3->SetLineColor(kColorVZERO);
 738     fNodes->Add(v0Lnode3);
 739     ndetL++;
 740
 741     sprintf(nameNode,"SUBDEL%d",ndetL);
 742     v0Lnode0->cd();
 743     v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);
 744     v0Lnode4->SetLineColor(kColorVZERO);
 745     fNodes->Add(v0Lnode4);
 746     ndetL++;
 747
 748     sprintf(nameNode,"SUBDEL%d",ndetL);
 749     v0Lnode0->cd();
 750     v0Lnode5 = new TNode(nameNode,nameNode,v0L5,0.0,0.0, 0.0,0);
 751     v0Lnode5->SetLineColor(kColorVZERO);
 752     fNodes->Add(v0Lnode5);
 753     ndetL++;
 754
 755     sprintf(nameNode,"SUBDEL%d",ndetL);
 756     v0Lnode0->cd();
 757     v0Lnode6 = new TNode(nameNode,nameNode,v0L6,0.0,0.0, 0.0,0);
 758     v0Lnode6->SetLineColor(kColorVZERO);
 759     fNodes->Add(v0Lnode6);
 760     ndetL++;
 761
 762     v0Lnode0->SetVisibility(2);
 763
 764   }
 765
 766 }
 767
 768 //_____________________________________________________________________________
 769 void AliVZEROv2::CreateMaterials()
 770 {
 771
 772 // Creates materials used for geometry
 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 2 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 // Step Manager, called at each step
 971
 972      Int_t     copy;
 973      static    Int_t   vol[4];
 974      static    Float_t hits[19];
 975      static    Float_t eloss, tlength;
 976
 977      TLorentzVector pos;
 978      TLorentzVector mom;
 979
 980      Float_t        theta;
 981      Float_t        phi;
 982      Float_t        kRaddeg = 180.0/TMath::Pi();
 983      Float_t        ringNumber;
 984
 985      Int_t          ipart;
 986      Float_t        destep, step;
 987
 988
 989 //   We keep only charged tracks :
 990
 991      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 992
 993
 994      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 995      vol[2]    = gMC->CurrentVolID(copy);
 996      vol[3]    = copy;
 997
 998
 999      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
1000                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
1001                ringNumber = 1.0;
1002      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1003                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1004                ringNumber = 2.0;
1005      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1006                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1007                ringNumber = 3.0;
1008      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1009                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1010                ringNumber = 4.0;
1011      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1012                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1013                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1014                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )
1015                ringNumber = 5.0;
1016      else
1017                ringNumber = 0.0;
1018
1019      if  (  ringNumber > 0.5  ) {
1020
1021         destep    = gMC->Edep();
1022         step      = gMC->TrackStep();
1023         eloss    += destep;
1024         tlength  += step;
1025
1026
1027         if  ( gMC->IsTrackEntering()  )  {
1028
1029             gMC->TrackPosition(pos);
1030
1031             gMC->TrackMomentum(mom);
1032             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1033             Double_t pt   = TMath::Sqrt(tc);
1034             Double_t pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1035             theta   = Float_t(TMath::ATan2(pt,Double_t(mom[2])))*kRaddeg;
1036             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1037
1038             ipart  = gMC->TrackPid();
1039
1040             hits[0]  = pos[0];
1041             hits[1]  = pos[1];
1042             hits[2]  = pos[2];
1043             hits[3]  =  Float_t (ipart);
1044
1045             hits[4]  = gMC->TrackTime();
1046             hits[5]  = gMC->TrackCharge();
1047             hits[6]  = theta;
1048             hits[7]  = phi;
1049             hits[8]  = ringNumber;
1050
1051             hits[9]  = pt;
1052             hits[10] = pmom;
1053             hits[11] = mom[0];
1054             hits[12] = mom[1];
1055             hits[13] = mom[2];
1056
1057             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
1058             hits[14] = par->Vx();
1059             hits[15] = par->Vy();
1060             hits[16] = par->Vz();
1061
1062             tlength  = 0.0;
1063             eloss    = 0.0;
1064
1065          }
1066
1067          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1068
1069          hits[17] =   eloss;
1070          hits[18] = tlength;
1071
1072          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1073
1074          tlength  = 0.0;
1075          eloss    = 0.0;
1076
1077          }
1078     }
1079
1080 }
1081
1082 //_____________________________________________________________________________
1083 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1084 {
1085
1086 //  Adds a VZERO hit
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 //  Adds a VZERO digit
1097
1098    TClonesArray  &ldigits = *fDigits;
1099    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1100 }
1101
1102 //_____________________________________________________________________________
1103 void AliVZEROv2::MakeBranch(Option_t *option)
1104 {
1105
1106 // Creates new branches in the current Root Tree
1107
1108   char branchname[10];
1109   sprintf(branchname,"%s",GetName());
1110   printf(" fBufferSize = %d \n",fBufferSize);
1111
1112   const char *cH = strstr(option,"H");
1113
1114   if (fHits   && TreeH() && cH) {
1115     TreeH()->Branch(branchname,&fHits, fBufferSize);
1116     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1117   }
1118
1119   const char *cD = strstr(option,"D");
1120
1121   if (fDigits   && fLoader->TreeD() && cD) {
1122     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1123     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1124   }
1125
1126 }