VZERO/AliVZEROv2.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16
  17 //////////////////////////////////////////////////////////////////////
  18 //                                                                  //
  19 //  (V-zero) detector  version 2  as designed by the Lyon group     //
  20 //   All comments should be sent to Brigitte CHEYNIS :              //
  21 //                                  b.cheynis@ipnl.in2p3.fr         //
  22 //   Geometry of the  4th of november 2002                          //
  23 //  (circular instead of trapezoidal shapes as in previous versions //
  24 //   plus changes in cell dimensions and offsets)                   //
  25 //                                                                  //
  26 //////////////////////////////////////////////////////////////////////
  27
  28 #include <TMath.h>
  29 #include <TTree.h>
  30 #include <TParticle.h>
  31 #include <TGeometry.h>
  32 #include <TTRD2.h>
  33 #include <TCONE.h>
  34 #include <TPGON.h>
  35 #include <TPCON.h>
  36 #include <TSPHE.h>
  37 #include <TTRAP.h>
  38 #include <TTUBS.h>
  39 #include <TTUBE.h>
  40 #include <TBRIK.h>
  41 #include <TBox.h>
  42
  43 #include <TShape.h>
  44 #include <TNode.h>
  45 #include <TClonesArray.h>
  46 #include <TH1.h>
  47 #include <string.h>
  48 #include <Riostream.h>
  49
  50 #include "AliVZEROv2.h"
  51 #include "AliRun.h"
  52 #include "AliMagF.h"
  53 #include "AliVZEROhit.h"
  54 #include "AliVZEROdigit.h"
  55 #include <Riostream.h>
  56 #include <Riostream.h>
  57
  58 #include <TGeant3.h>
  59 #include <stdlib.h>
  60 #include "TObjectTable.h"
  61
  62 #include "AliConst.h"
  63 #include "TLorentzVector.h"
  64
  65 ClassImp(AliVZEROv2)
  66
  67 //--------------------------------------------------------------------
  68 AliVZEROv2:: AliVZEROv2():AliVZERO()
  69 {
  70
  71 }
  72 //--------------------------------------------------------------------
  73 AliVZEROv2::AliVZEROv2(const char *name, const char *title):
  74  AliVZERO(name,title)
  75 {
  76
  77 // Standard constructor for V-zeroR Detector (right part)  version 0
  78
  79   Int_t i;
  80
  81   printf("\n");
  82   for(i=0;i<26;i++) printf("*");
  83   printf(" Create VZERO object ");
  84   for(i=0;i<26;i++) printf("*");
  85   printf("\n");
  86
  87 }
  88
  89 //-------------------------------------------------------------------------
  90 void AliVZEROv2::CreateGeometry()
  91 {
  92
  93 // Creates the GEANT geometry of the V-zero Detector  version 2
  94
  95   Int_t i;
  96
  97   printf("\n");
  98   for(i=0;i<26;i++) printf("*");
  99   printf(" Create VZERO Geometry ");
 100   for(i=0;i<26;i++) printf("*");
 101   printf("\n");
 102
 103   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 104
 105   Int_t    n_detec_R = 1;
 106   Int_t    n_detec_L = 1;
 107
 108   Int_t    n_cells_R = 1;
 109   Int_t    n_cells_L = 1;
 110
 111   Int_t    idrotm[999];
 112
 113   Float_t  height1, height2, height3, height4, height5;
 114   Float_t  height;
 115   Float_t  theta;
 116
 117   Float_t  half_thick_qua;
 118
 119   Float_t  zdet;
 120   Float_t  r0, r5;
 121   Float_t  pi = TMath::Pi();
 122
 123   height1           =     1.82;           // height of cell 1, in cm
 124   height2           =     3.81;           // height of cell 2, in cm
 125   height3           =     4.72;           // height of cell 3, in cm
 126   height4           =     7.12;           // height of cell 4, in cm
 127   height5           =    10.83;           // height of cell 5, in cm
 128
 129   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
 130
 131   half_thick_qua    = fThickness1/2.0;   // half thickness of elementary cell (inner ring)
 132
 133   zdet              =    90.0 - 0.6 -fThickness/2.0;  // distance to vertex (along Z axis)
 134   r0                =    4.05;            // closest distance to center of the beam pipe
 135   height            =    height1 + height2 + height3 + height4 + height5;
 136   r5                =    r0 + height;
 137
 138 // Creation of mother volume V0LE - left part - :
 139 // Entrance face at  -350.0 cm ...
 140
 141    Float_t   partube[3];
 142
 143    partube[0] =  4.3;
 144    partube[1] = 45.0;
 145    partube[2] = fThickness1/2.0;
 146
 147    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 148
 149 // Creation of five rings - left part - :
 150 // Entrance face at -350.0 cm ...
 151
 152 // Mother volume V0L0 in which will be set 5 scintillator cells
 153
 154   Float_t   partubs[5];
 155
 156   Float_t   r0_left      =   4.3;
 157   Float_t   height1_left =   2.6;
 158   Float_t   height2_left =   4.1;
 159   Float_t   height3_left =   6.4;
 160   Float_t   height4_left =  10.2;
 161   Float_t   height5_left =  16.9;
 162   Float_t   height_left  = height1_left + height2_left + height3_left
 163                                         + height4_left + height5_left;
 164   Float_t   r5_left      = r0_left  + height_left;
 165
 166   partubs[0]      =  r0_left;
 167   partubs[1]      =  r5_left;
 168   partubs[2]      =  fThickness1/2.0;
 169   partubs[3]      =  90.0-15.0;
 170   partubs[4]      = 120.0-15.0;
 171
 172   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 173
 174   Float_t  r1_left =  r0_left + height1_left;
 175
 176   partubs[0]     =  r0_left;
 177   partubs[1]     =  r1_left;
 178
 179   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 180   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 181
 182   Float_t   r2_left  =   r1_left + height2_left;
 183
 184   partubs[0]     =  r1_left;
 185   partubs[1]     =  r2_left;
 186
 187   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 188   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 189
 190   Float_t   r3_left =   r2_left + height3_left;
 191
 192   partubs[0]     =  r2_left;
 193   partubs[1]     =  r3_left;
 194
 195   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 196   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 197
 198   Float_t   r4_left =  r3_left + height4_left;
 199
 200   partubs[0]     =  r3_left;
 201   partubs[1]     =  r4_left;
 202
 203   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 204   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 205
 206   partubs[0]     =  r4_left;
 207   partubs[1]     =  r5_left;
 208   partubs[3]     =  90.0-15.0;
 209   partubs[4]     = 120.0-30.0;
 210
 211   gMC->Gsvolu("V0L5","TUBS",idtmed[3005],partubs,5);  // quartz volume
 212   gMC->Gspos("V0L5",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 213
 214   partubs[3]     = 120.0-30.0;
 215   partubs[4]     = 120.0-15.0;
 216
 217   gMC->Gsvolu("V0L6","TUBS",idtmed[3005],partubs,5);  // quartz volume
 218   gMC->Gspos("V0L6",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 219
 220
 221 // Creation of mother volume V0RI - right part - :
 222
 223   partube[0] = r0 - 0.2;
 224   partube[1] = r5 + 1.0;
 225   partube[2] = fThickness/2.0;
 226
 227   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 228
 229 // Creation of  carbon lids (3 mm thick) to keep V0RI box shut...
 230
 231   partube[0] =   r0;
 232   partube[1] =   r5;
 233   partube[2] =   +0.3/2.0;
 234
 235   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 236   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 237   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 238
 239 // Creation of aluminum rings to maintain the V0RI pieces ...
 240
 241   partube[0] =   r0 - 0.2;
 242   partube[1] =   r0;
 243   partube[2] =   +fThickness/2.0;
 244
 245   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 246   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 247
 248   partube[0] =   r5;
 249   partube[1] =   r5 + 1.0;
 250   partube[2] =   +fThickness/2.0;
 251
 252   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 253   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 254
 255 // Mother volume V0R0 in which will be set 5  scintillator cells
 256
 257   partubs[0]      =  r0;
 258   partubs[1]      =  r5;
 259   partubs[2]      =  fThickness/2.0;
 260   partubs[3]      =  90.0-15.0;
 261   partubs[4]      = 120.0-15.0;
 262
 263   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 264
 265 // Elementary cell of ring 1 :
 266 // (the cells will be shifted by 3 mm to output fibers)
 267
 268   Float_t   offset_fibers =  0.7;
 269   Float_t   offset        =  fThickness/2.0 - 0.3 - fThickness1/2.0;
 270   Float_t   r1            =  r0 + height1;
 271
 272   partubs[0]     =  r0;
 273   partubs[1]     =  r1;
 274   partubs[2]     =  fThickness1/2.0;
 275
 276   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 277   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , offset, 0,"ONLY");
 278
 279 // Elementary cell of ring 2 :
 280
 281   Float_t   r2   =  r1 + height2;
 282
 283   partubs[0]     =  r1;
 284   partubs[1]     =  r2;
 285
 286   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 287   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , offset - offset_fibers, 0,"ONLY");
 288
 289
 290 // Elementary cell of ring 3 :
 291
 292   Float_t   r3   =  r2 + height3;
 293
 294   partubs[0]     =  r2;
 295   partubs[1]     =  r3;
 296
 297   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 298   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , offset -  2.0 * offset_fibers, 0,"ONLY");
 299
 300 // Elementary cell of ring 4 :
 301
 302   Float_t   r4   =  r3 + height4 ;
 303
 304   partubs[0]     =  r3;
 305   partubs[1]     =  r4;
 306
 307   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 308   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 ,  offset - 3.0 * offset_fibers, 0,"ONLY");
 309
 310 // Elementary cells of ring 5 :
 311
 312   partubs[0]     =  r4;
 313   partubs[1]     =  r5;
 314   partubs[3]     =  90.0-15.0;
 315   partubs[4]     = 120.0-30.0;
 316
 317   gMC->Gsvolu("V0R5","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 318   gMC->Gspos("V0R5",1,"V0R0", 0.0, 0.0 , offset - 4.0 * offset_fibers, 0,"ONLY");
 319
 320   partubs[3]     = 120.0-30.0;
 321   partubs[4]     = 120.0-15.0;
 322
 323   gMC->Gsvolu("V0R6","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 324   gMC->Gspos("V0R6",1,"V0R0", 0.0, 0.0 ,  offset - 4.0 * offset_fibers, 0,"ONLY");
 325
 326   Float_t  phi_deg = 180./6.;
 327
 328 // Right part :
 329
 330   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 331       {
 332         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 333         gMC->Gspos("V0R0",n_detec_R,"V0RI",0.0,
 334                           0.0,0.0,idrotm[902],"ONLY");
 335         n_detec_R++;
 336        }
 337
 338   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,zdet,0,"ONLY");
 339
 340   n_cells_R = (n_detec_R - 1) * 6;
 341   printf("    Number of cells on Right side =   %d\n",  n_cells_R);
 342
 343 // Left part :
 344
 345   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 346       {
 347         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 348         gMC->Gspos("V0L0",n_detec_L,"V0LE",0.0,
 349                           0.0,0.0,idrotm[902],"ONLY");
 350         n_detec_L++;
 351        }
 352
 353   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,-350.0-fThickness1/2.0,0,"ONLY");
 354
 355   n_cells_L = (n_detec_L - 1) * 6;
 356   printf("    Number of cells on Left side  =   %d\n",  n_cells_L);
 357   for(i=0;i<75;i++) printf("*");
 358   printf("\n");
 359
 360 }
 361
 362 //_____________________________________________________________________________
 363 void AliVZEROv2::BuildGeometry()
 364 {
 365
 366 // Builds simple ROOT TNode geometry for event display
 367
 368   Int_t i;
 369
 370   printf("\n");
 371   for(i=0;i<30;i++) printf("*");
 372   printf(" VZERO BuildGeometry ");
 373   for(i=0;i<30;i++) printf("*");
 374   printf("\n");
 375
 376   TNode *Top;
 377
 378   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 379   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 380   TNode *V0Lnode, *V0Lnode0;
 381   TNode *V0Lnode1, *V0Lnode2, *V0Lnode3, *V0Lnode4, *V0Lnode5, *V0Lnode6;
 382
 383   const int kColorVZERO  = kGreen;
 384
 385   Top = gAlice->GetGeometry()->GetNode("alice");
 386
 387   Float_t  height1, height2, height3, height4, height5;
 388   Float_t  height;
 389   Float_t  theta;
 390
 391   Float_t  half_thick_qua;
 392   Float_t  zdet;
 393   Float_t  r0, r5;
 394   Float_t  pi = TMath::Pi();
 395
 396   height1           =     1.82;           // height of cell 1, in cm
 397   height2           =     3.81;           // height of cell 2, in cm
 398   height3           =     4.72;           // height of cell 3, in cm
 399   height4           =     7.12;           // height of cell 4, in cm
 400   height5           =    10.83;           // height of cell 5, in cm
 401
 402   theta             =    pi/6.0/2.0;
 403
 404   half_thick_qua    =    fThickness1/2.0;
 405
 406   zdet              =    90.0 - 0.6 - fThickness/2.0;
 407   r0                =    4.05;
 408   height            =    height1 + height2 + height3 + height4 + height5;
 409   r5                =    r0 + height;
 410
 411   Int_t     ndiv    =     1;
 412
 413   Float_t   partube[3];
 414
 415   partube[0] =  r0 - 0.2;
 416   partube[1] =  r5 + 1.0;
 417   partube[2] = fThickness/2.0;
 418
 419   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 420
 421   Top->cd();
 422
 423   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
 424
 425   V0Rnode->SetLineColor(kYellow);
 426   fNodes->Add(V0Rnode);
 427   V0Rnode->SetVisibility(2);
 428
 429 // Rondelles de carbone (epaisseur 3 mm) de maintien des cellules ...
 430
 431   partube[0] =   r0;
 432   partube[1] =   r5;
 433   partube[2] =   +0.3/2.0;
 434
 435   TTUBE  *V0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 436
 437   V0Rnode->cd();
 438   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 439   V0Rnode6->SetLineColor(kYellow);
 440   fNodes->Add(V0Rnode6);
 441   V0Rnode->cd();
 442   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 443   V0Rnode7->SetLineColor(kYellow);
 444   fNodes->Add(V0Rnode7);
 445
 446   partube[0] =   r0 - 0.2;
 447   partube[1] =   r0;
 448   partube[2] =   +fThickness/2.0;
 449
 450   TTUBE *V0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 451
 452   V0Rnode->cd();
 453   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 454   V0Rnode8->SetLineColor(kYellow);
 455   fNodes->Add(V0Rnode8);
 456
 457   partube[0] =   r5;
 458   partube[1] =   r5 + 1.0;
 459   partube[2] =   +fThickness/2.0;
 460
 461   TTUBE  *V0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 462
 463   V0Rnode->cd();
 464   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 465   V0Rnode9->SetLineColor(kYellow);
 466   fNodes->Add(V0Rnode9);
 467
 468   Float_t   partubs[5];
 469
 470   partubs[0]      =  r0;
 471   partubs[1]      =  r5;
 472   partubs[2]      =  fThickness/2.0;
 473   partubs[3]      =  90.0-15.0;
 474   partubs[4]      = 120.0-15.0;
 475
 476   TTUBS  *V0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 477                                                   partubs[3], partubs[4]);
 478
 479   V0R0->SetNumberOfDivisions(ndiv);
 480
 481   Float_t   r1     =  r0 + height1;
 482   Float_t   offset = fThickness/2.0 - 0.3 - fThickness1/2.0;
 483   Float_t   offset_fibers = 0.7;
 484
 485   partubs[0]     =  r0;
 486   partubs[1]     =  r1;
 487   partubs[2]     =  fThickness1/2.0;
 488
 489   TTUBS *V0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 490                                                   partubs[3], partubs[4]);
 491
 492   V0R1->SetNumberOfDivisions(ndiv);
 493
 494   Float_t   r2   =  r1 + height2;
 495
 496   partubs[0]     =  r1;
 497   partubs[1]     =  r2;
 498
 499   TTUBS *V0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 500                                                   partubs[3], partubs[4]);
 501
 502   V0R2->SetNumberOfDivisions(ndiv);
 503
 504   Float_t   r3   =  r2 + height3;
 505
 506   partubs[0]     =  r2;
 507   partubs[1]     =  r3;
 508
 509   TTUBS *V0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 510                                                   partubs[3], partubs[4]);
 511   V0R3->SetNumberOfDivisions(ndiv);
 512
 513   Float_t   r4   =  r3 + height4;
 514
 515   partubs[0]     =  r3;
 516   partubs[1]     =  r4;
 517
 518   TTUBS *V0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 519                                                   partubs[3], partubs[4]);
 520
 521   V0R4->SetNumberOfDivisions(ndiv);
 522
 523   partubs[0]     =  r4;
 524   partubs[1]     =  r5;
 525   partubs[3]     =  90.0-15.0;
 526   partubs[4]     = 120.0-30.0;
 527
 528   TTUBS *V0R5 = new TTUBS("V0R5", "V0R5", "void", partubs[0], partubs[1], partubs[2],
 529                                                   partubs[3], partubs[4]);
 530
 531   V0R5->SetNumberOfDivisions(ndiv);
 532
 533   partubs[3]     = 120.0-30.0;
 534   partubs[4]     = 120.0-15.0;
 535
 536   TTUBS *V0R6 = new TTUBS("V0R6", "V0R6", "void", partubs[0], partubs[1], partubs[2],
 537                                                   partubs[3], partubs[4]);
 538
 539   V0R6->SetNumberOfDivisions(ndiv);
 540
 541   Float_t  phi;
 542   Float_t  phi_deg= 180./6.;
 543
 544   Int_t    n_detec_R = 1;
 545
 546   char     NameNode[12];
 547
 548   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 549
 550   {
 551
 552     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 553
 554     sprintf(NameNode,"SUBDER%d",n_detec_R);
 555
 556     V0Rnode->cd();
 557     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,0.0,0.0, 0.0,mat920);
 558     V0Rnode0->SetLineColor(kYellow);
 559     fNodes->Add(V0Rnode0);
 560     n_detec_R++;
 561
 562     sprintf(NameNode,"SUBDER%d",n_detec_R);
 563     V0Rnode0->cd();
 564     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,0.0, offset,0);
 565     V0Rnode1->SetLineColor(kColorVZERO);
 566     fNodes->Add(V0Rnode1);
 567     n_detec_R++;
 568
 569     sprintf(NameNode,"SUBDER%d",n_detec_R);
 570     V0Rnode0->cd();
 571     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,0.0, offset - offset_fibers,0);
 572     V0Rnode2->SetLineColor(kColorVZERO);
 573     fNodes->Add(V0Rnode2);
 574     n_detec_R++;
 575
 576     sprintf(NameNode,"SUBDER%d",n_detec_R);
 577     V0Rnode0->cd();
 578     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,0.0, offset - 2.0*offset_fibers,0);
 579     V0Rnode3->SetLineColor(kColorVZERO);
 580     fNodes->Add(V0Rnode3);
 581     n_detec_R++;
 582
 583     sprintf(NameNode,"SUBDER%d",n_detec_R);
 584     V0Rnode0->cd();
 585     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,0.0, offset - 3.0*offset_fibers,0);
 586     V0Rnode4->SetLineColor(kColorVZERO);
 587     fNodes->Add(V0Rnode4);
 588     n_detec_R++;
 589
 590     sprintf(NameNode,"SUBDER%d",n_detec_R);
 591     V0Rnode0->cd();
 592     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,0.0, offset - 4.0*offset_fibers,0);
 593     V0Rnode5->SetLineColor(kColorVZERO);
 594     fNodes->Add(V0Rnode5);
 595     n_detec_R++;
 596
 597     sprintf(NameNode,"SUBDER%d",n_detec_R);
 598     V0Rnode0->cd();
 599     V0Rnode6 = new TNode(NameNode,NameNode,V0R6,0.0,0.0, offset - 4.0*offset_fibers,0);
 600     V0Rnode6->SetLineColor(kColorVZERO);
 601     fNodes->Add(V0Rnode6);
 602     n_detec_R++;
 603
 604     V0Rnode0->SetVisibility(2);
 605
 606   }
 607
 608 // Left side of VZERO :
 609
 610   Float_t   r0_left      =   4.3;
 611   Float_t   height1_left =   2.6;
 612   Float_t   height2_left =   4.1;
 613   Float_t   height3_left =   6.4;
 614   Float_t   height4_left =  10.2;
 615   Float_t   height5_left =  16.9;
 616   Float_t   height_left  = height1_left + height2_left + height3_left
 617                                         + height4_left + height5_left;
 618   Float_t   r5_left      = r0_left  + height_left;
 619
 620   partube[0] =  r0_left;
 621   partube[1] =  r5_left;
 622   partube[2] =  fThickness1/2.0;
 623
 624   TTUBE *V0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 625
 626   Top->cd();
 627
 628   V0Lnode = new TNode("V0LE","V0LE",V0LE,0.0,0.0,-350.0-fThickness1/2.0,0);
 629
 630   V0Lnode->SetLineColor(kBlue);
 631   fNodes->Add(V0Lnode);
 632
 633   V0Lnode->SetVisibility(2);
 634
 635   partubs[0]      =  r0_left;
 636   partubs[1]      =  r5_left;
 637   partubs[2]      =  fThickness1/2.0;
 638   partubs[3]      =  90.0-15.0;
 639   partubs[4]      = 120.0-15.0;
 640
 641   TTUBS *V0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 642                                                   partubs[3], partubs[4]);
 643
 644   V0L0->SetNumberOfDivisions(ndiv);
 645   V0L0->SetLineColor(7);
 646
 647   Float_t   offset_left;
 648   offset_left    = - fThickness1/2.0;
 649
 650   Float_t   r1_left =  r0_left + height1_left;
 651
 652   partubs[0]     =  r0_left;
 653   partubs[1]     =  r1_left;
 654
 655   TTUBS *V0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 656                                                   partubs[3], partubs[4]);
 657
 658   V0L1->SetNumberOfDivisions(ndiv);
 659
 660   Float_t   r2_left =  r1_left + height2_left;
 661
 662   partubs[0]     =  r1_left;
 663   partubs[1]     =  r2_left;
 664
 665   TTUBS *V0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 666                                                   partubs[3], partubs[4]);
 667
 668   V0L2->SetNumberOfDivisions(ndiv);
 669
 670   Float_t   r3_left  =  r2_left + height3_left;
 671
 672   partubs[0]     =  r2_left;
 673   partubs[1]     =  r3_left;
 674
 675   TTUBS *V0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 676                                                   partubs[3], partubs[4]);
 677   V0L3->SetNumberOfDivisions(ndiv);
 678
 679   Float_t   r4_left  =   r3_left + height4_left;
 680
 681   partubs[0]     =  r3_left;
 682   partubs[1]     =  r4_left;
 683
 684   TTUBS *V0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 685                                                   partubs[3], partubs[4]);
 686
 687   V0L4->SetNumberOfDivisions(ndiv);
 688
 689   partubs[0]     =  r4_left;
 690   partubs[1]     =  r5_left;
 691   partubs[3]     =  90.0-15.0;
 692   partubs[4]     = 120.0-30.0;
 693
 694   TTUBS *V0L5 = new TTUBS("V0L5", "V0L5", "void", partubs[0], partubs[1], partubs[2],
 695                                                   partubs[3], partubs[4]);
 696
 697
 698   V0L5->SetNumberOfDivisions(ndiv);
 699
 700   partubs[3]     = 120.0-30.0;
 701   partubs[4]     = 120.0-15.0;
 702
 703   TTUBS *V0L6 = new TTUBS("V0L6", "V0L6", "void", partubs[0], partubs[1], partubs[2],
 704                                                   partubs[3], partubs[4]);
 705
 706   V0L6->SetNumberOfDivisions(ndiv);
 707
 708   Int_t    n_detec_L   = 1;
 709
 710   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 711
 712   {
 713
 714     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 715
 716
 717     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 718
 719     V0Lnode->cd();
 720     V0Lnode0 = new TNode(NameNode,NameNode,V0L0,0.0,0.0, offset_left + half_thick_qua,mat920);
 721     V0Lnode0->SetLineColor(kColorVZERO);
 722     fNodes->Add(V0Lnode0);
 723     n_detec_L++;
 724
 725     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 726     V0Lnode0->cd();
 727     V0Lnode1 = new TNode(NameNode,NameNode,V0L1,0.0,0.0, 0.0,0);
 728     V0Lnode1->SetLineColor(kColorVZERO);
 729     fNodes->Add(V0Lnode1);
 730     n_detec_L++;
 731
 732     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 733     V0Lnode0->cd();
 734     V0Lnode2 = new TNode(NameNode,NameNode,V0L2,0.0,0.0, 0.0,0);
 735     V0Lnode2->SetLineColor(kColorVZERO);
 736     fNodes->Add(V0Lnode2);
 737     n_detec_L++;
 738
 739
 740     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 741     V0Lnode0->cd();
 742     V0Lnode3 = new TNode(NameNode,NameNode,V0L3,0.0,0.0, 0.0,0);
 743     V0Lnode3->SetLineColor(kColorVZERO);
 744     fNodes->Add(V0Lnode3);
 745     n_detec_L++;
 746
 747     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 748     V0Lnode0->cd();
 749     V0Lnode4 = new TNode(NameNode,NameNode,V0L4,0.0,0.0, 0.0,0);
 750     V0Lnode4->SetLineColor(kColorVZERO);
 751     fNodes->Add(V0Lnode4);
 752     n_detec_L++;
 753
 754     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 755     V0Lnode0->cd();
 756     V0Lnode5 = new TNode(NameNode,NameNode,V0L5,0.0,0.0, 0.0,0);
 757     V0Lnode5->SetLineColor(kColorVZERO);
 758     fNodes->Add(V0Lnode5);
 759     n_detec_L++;
 760
 761     sprintf(NameNode,"SUBDEL%d",n_detec_L);
 762     V0Lnode0->cd();
 763     V0Lnode6 = new TNode(NameNode,NameNode,V0L6,0.0,0.0, 0.0,0);
 764     V0Lnode6->SetLineColor(kColorVZERO);
 765     fNodes->Add(V0Lnode6);
 766     n_detec_L++;
 767
 768     V0Lnode0->SetVisibility(2);
 769
 770   }
 771
 772 }
 773
 774 //------------------------------------------------------------------------
 775 void AliVZEROv2::CreateMaterials()
 776 {
 777     Int_t i;
 778
 779     printf("\n");
 780     for(i=0;i<25;i++) printf("*");
 781     printf(" VZERO create materials ");
 782     for(i=0;i<26;i++) printf("*");
 783     printf("\n");
 784
 785 /*
 786     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,
 787                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 788
 789
 790     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,
 791                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 792
 793     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 794                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 795                                  1.662295, 1.68337 };
 796
 797     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 798                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 799
 800     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 801
 802
 803     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 804
 805
 806     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,
 807                                1e-4,1e-4,1e-4,1e-4 };
 808     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 809
 810 */
 811
 812     Int_t *idtmed = fIdtmed->GetArray()-2999;
 813
 814 //    TGeant3 *geant3 = (TGeant3*) gMC;
 815
 816 //  Parameters related to Quarz (SiO2) :
 817
 818     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 819     Int_t nlmatqua;
 820
 821     aqua[0]    = 28.09;
 822     aqua[1]    = 16.;
 823     zqua[0]    = 14.;
 824     zqua[1]    = 8.;
 825     densqua    = 2.64;
 826     nlmatqua   = -2;
 827     wmatqua[0] = 1.;
 828     wmatqua[1] = 2.;
 829
 830 // Parameters  related to aluminum sheets :
 831
 832     Float_t  aal   = 26.98;
 833     Float_t  zal   = 13.00;
 834     Float_t  densal=   2.7;
 835     Float_t  radlal=   8.9;
 836
 837 // Parameters  related to scintillator CH :
 838
 839     Float_t ascin[2] = {1.00794,12.011};
 840     Float_t zscin[2] = {1.,6.};
 841     Float_t wscin[2] = {1.,1.};
 842     Float_t denscin  = 1.032;
 843
 844 //  Definition of materials :
 845
 846     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 847     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
 848     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 849     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 850     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 851     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 852
 853     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 854
 855
 856     Int_t   ISXFLD = gAlice->Field()->Integ();
 857     Float_t SXMGMX = gAlice->Field()->Max();
 858
 859     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 860
 861     tmaxfd = 10.;
 862     stemax = 0.1;
 863     deemax = 0.1;
 864     epsil  = 0.001;
 865     stmin  = 0.001;
 866
 867 //  Active Air :
 868     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX,
 869               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 870
 871 //  Inactive air :
 872
 873     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX,
 874               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 875
 876     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX,
 877               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 878
 879     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX,
 880               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 881
 882     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX,
 883               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 884
 885
 886     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX,
 887               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 888
 889     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 890
 891     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 892     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 893     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 894     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 895
 896     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 897     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 898     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 899     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 900
 901     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 902     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 903     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 904     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 905     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 906     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 907
 908     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 909     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 910     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 911     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 912
 913     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 914     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 915     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 916     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 917     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 918     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 919
 920     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 921     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 922     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 923     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 924     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 925     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 926
 927
 928 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 929 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 930
 931 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 932 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 933
 934
 935 }
 936 //---------------------------------------------------------------------
 937 void AliVZEROv2::DrawModule()
 938 {
 939
 940 //  Drawing is done in DrawVZERO.C
 941
 942    Int_t i;
 943
 944    printf("\n");
 945    for(i=0;i<30;i++) printf("*");
 946    printf(" VZERO DrawModule ");
 947    for(i=0;i<30;i++) printf("*");
 948    printf("\n");
 949
 950
 951 }
 952
 953 //-------------------------------------------------------------------
 954 void AliVZEROv2::Init()
 955 {
 956 // Initialises version 1 of the VZERO Detector
 957 // Just prints an information message
 958
 959    printf(" VZERO version %d initialized \n",IsVersion());
 960
 961 //   gMC->SetMaxStep(fMaxStepAlu);
 962 //   gMC->SetMaxStep(fMaxStepQua);
 963
 964     AliVZERO::Init();
 965
 966 }
 967
 968 //-------------------------------------------------------------------
 969
 970 void AliVZEROv2::StepManager()
 971 {
 972
 973      Int_t     copy;
 974      static    Int_t   vol[4];
 975      static    Float_t hits[19];
 976      static    Float_t eloss, tlength;
 977
 978      TLorentzVector pos;
 979      TLorentzVector mom;
 980
 981      Float_t        theta;
 982      Float_t        phi;
 983      Float_t        kRaddeg = 180/TMath::Pi();
 984      Float_t        RingNumber;
 985
 986      Int_t          ipart;
 987      Float_t        destep, step;
 988
 989
 990 //   We keep only charged tracks :
 991
 992      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 993
 994
 995      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 996      vol[2]    = gMC->CurrentVolID(copy);
 997      vol[3]    = copy;
 998
 999
1000      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
1001                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
1002                RingNumber = 1.0;
1003      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1004                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1005                RingNumber = 2.0;
1006      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1007                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1008                RingNumber = 3.0;
1009      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1010                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1011                RingNumber = 4.0;
1012      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1013                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") ||
1014                gMC->CurrentVolID(copy) == gMC->VolId("V0L6") ||
1015                gMC->CurrentVolID(copy) == gMC->VolId("V0R6") )
1016                RingNumber = 5.0;
1017      else
1018                RingNumber = 0.0;
1019
1020      if  (  RingNumber > 0.5  ) {
1021
1022         destep    = gMC->Edep();
1023         step      = gMC->TrackStep();
1024         eloss    += destep;
1025         tlength  += step;
1026
1027
1028         if  ( gMC->IsTrackEntering()  )  {
1029
1030             gMC->TrackPosition(pos);
1031
1032             gMC->TrackMomentum(mom);
1033             Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1034             Double_t Pt   = TMath::Sqrt(tc);
1035             Double_t Pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1036             theta   = Float_t(TMath::ATan2(Pt,Double_t(mom[2])))*kRaddeg;
1037             phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
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->Particle(gAlice->CurrentTrack());
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->CurrentTrack(), vol, hits);
1074
1075          tlength  = 0.0;
1076          eloss    = 0.0;
1077
1078
1079          }
1080     }
1081
1082 }
1083
1084 //_____________________________________________________________________________
1085 void AliVZEROv2::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1086 {
1087
1088   //  Add a VZERO hit
1089
1090
1091   TClonesArray &lhits = *fHits;
1092   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1093 }
1094
1095 //---------------------------------------------------------------------
1096 void AliVZEROv2::AddDigits(Int_t *tracks, Int_t* digits)
1097 {
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
1110   char branchname[10];
1111   sprintf(branchname,"%s",GetName());
1112   printf(" fBufferSize = %d \n",fBufferSize);
1113
1114   const char *H = strstr(option,"H");
1115
1116   if (fHits   && gAlice->TreeH() && H) {
1117     gAlice->TreeH()->Branch(branchname,&fHits, fBufferSize);
1118     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1119   }
1120
1121   const char *D = strstr(option,"D");
1122   //
1123   if (fDigits   && gAlice->TreeD() && D) {
1124     gAlice->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1125     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1126   }
1127
1128 }