VZERO/AliVZEROv0.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 0  as designed by the Lyon group     //
  21 //   All comments should be sent to Brigitte CHEYNIS :              //
  22 //                                  b.cheynis@ipnl.in2p3.fr         //
  23 //   Geometrie      du 25/02/2002                                   //
  24 //                                                                  //
  25 //////////////////////////////////////////////////////////////////////
  26
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <Riostream.h>
  30
  31 #include <TBRIK.h>
  32 #include <TBox.h>
  33 #include <TCONE.h>
  34 #include <TClonesArray.h>
  35 #include <TGeometry.h>
  36 #include <TH1.h>
  37 #include <TLorentzVector.h>
  38 #include <TMath.h>
  39 #include <TNode.h>
  40 #include <TObjectTable.h>
  41 #include <TPCON.h>
  42 #include <TPGON.h>
  43 #include <TSPHE.h>
  44 #include <TShape.h>
  45 #include <TTRAP.h>
  46 #include <TTRD2.h>
  47 #include <TVirtualMC.h>
  48
  49 #include "ABSOConst.h"
  50 #include "ABSOSHILConst.h"
  51 #include "AliMagF.h"
  52 #include "AliRun.h"
  53 #include "AliVZEROdigit.h"
  54 #include "AliVZEROhit.h"
  55 #include "AliVZEROv0.h"
  56 #include "AliMC.h"
  57
  58 ClassImp(AliVZEROv0)
  59
  60 //--------------------------------------------------------------------
  61 AliVZEROv0:: AliVZEROv0():AliVZERO()
  62 {
  63
  64
  65 }
  66 //--------------------------------------------------------------------
  67 AliVZEROv0::AliVZEROv0(const char *name, const char *title):
  68  AliVZERO(name,title)
  69 {
  70
  71 // Standard constructor for V-zeroR Detector (right part)  version 0
  72
  73
  74   Int_t i;
  75
  76   printf("\n");
  77   for(i=0;i<30;i++) printf("*");
  78   printf(" Create VZERO object ");
  79   for(i=0;i<30;i++) printf("*");
  80   printf("\n");
  81
  82 }
  83
  84 //-------------------------------------------------------------------------
  85 void AliVZEROv0::CreateGeometry()
  86 {
  87
  88 // Creates the Geant geometry of the V-zero Detector  version 0
  89
  90
  91   Int_t i;
  92
  93   printf("\n");
  94   for(i=0;i<30;i++) printf("*");
  95   printf(" Create VZERO Geometry ");
  96   for(i=0;i<30;i++) printf("*");
  97   printf("\n");
  98
  99
 100   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 101
 102   Int_t    n_detec_R = 1;
 103   Int_t    n_detec_L = 1;
 104
 105   Int_t    n_cells_R = 1;
 106   Int_t    n_cells_L = 1;
 107
 108   Int_t    idrotm[999];
 109
 110   Float_t  height1, height2, height3, height4, height5;
 111   Float_t  height;
 112   Float_t  theta;
 113   Float_t  half_thick_alu;
 114   Float_t  half_thick_qua1,half_thick_qua2,half_thick_qua3;
 115   Float_t  half_thick_qua4,half_thick_qua5;
 116   Float_t  zdet;
 117   Float_t  r0, r5;
 118   Float_t  pi = TMath::Pi();
 119   Float_t  thick_alu;
 120
 121   height1           =     2.0;           // height of cell 1, in cm
 122   height2           =     3.2;           // height of cell 2, in cm
 123   height3           =     4.9;           // height of cell 3, in cm
 124   height4           =     7.5;           // height of cell 4, in cm
 125   height5           =    12.0;           // height of cell 5, in cm
 126
 127   theta             = pi/6.0/2.0;       // half angular opening = 15 degrees
 128   half_thick_alu    = 0.0025;            // half thickness of aluminum foil, in cm
 129   thick_alu         = 2.0 * half_thick_alu;
 130   fThickness1       = 2.5;
 131   half_thick_qua1   = fThickness1/2.0;   // half thickness of WRAPPED quartz cell (inner ring)
 132   half_thick_qua2   = half_thick_qua1  - 0.25;
 133   half_thick_qua3   = half_thick_qua2  - 0.25;
 134   half_thick_qua4   = half_thick_qua3  - 0.25;
 135   half_thick_qua5   = half_thick_qua4  - 0.25;
 136
 137   zdet              =    86.9 +fThickness/2.0;  // distance to vertex (along Z axis)
 138   r0                =    4.0;            // closest distance to center of the beam pipe
 139   height            =    height1 + height2 + height3 + height4 + height5;
 140   r5                =    r0 + height;
 141
 142 //............................................................................
 143
 144 // Here I add the flange which is sitting on beam line
 145 // right in front of V0R detector, and which I found on CERN drawing
 146 // entitled : ALICE BEAM VACCUM CHAMBER - RB26 version III :
 147
 148 //     Float_t   pflange[3];
 149 //
 150 //     pflange[0] = 3.0;
 151 //     pflange[1] = 5.675;
 152 //     pflange[2] = 0.9;
 153 //
 154 //     gMC->Gsvolu("QFA0","TUBE", idtmed[3003], pflange, 3);
 155 //     gMC->Gspos("QFA0", 1 ,"ALIC", 0.0, 0.0, 85.0+0.9, 0, "ONLY");
 156
 157 //............................................................................
 158
 159
 160 // Creation of mother volume V0LE - left part - :
 161 // Face entree a -350.0 cm ...
 162
 163    Float_t   partube[3];
 164
 165    partube[0] =  4.3;
 166    partube[1] = 45.0;
 167    partube[2] = fThickness1/2.0;
 168
 169    gMC->Gsvolu("V0LE","TUBE",idtmed[3002],partube,3);
 170
 171
 172 // Creation of five rings - left part - :
 173 // Face entree a -350.0 cm ...
 174
 175 // Mother volume V0L0 in which will be set 5 quartz cells
 176
 177
 178   Float_t   par[11];
 179
 180   Float_t   dist0_left;
 181   Float_t   r0_left      =   4.3;
 182   Float_t   height1_left =   2.6;
 183   Float_t   height2_left =   4.1;
 184   Float_t   height3_left =   6.4;
 185   Float_t   height4_left =  10.2;
 186   Float_t   height5_left =  16.9;
 187   Float_t   height_left  = height1_left + height2_left + height3_left
 188                                         + height4_left + height5_left;
 189   Float_t   r5_left      = r0_left  + height_left;
 190
 191
 192   dist0_left  =  r0_left + height_left / 2.0;
 193   thick_alu   =  2.0*half_thick_alu;
 194
 195   par[0]      =  half_thick_qua1;
 196   par[1]      =  0.0;
 197   par[2]      =  0.0;
 198   par[3]      =  height_left / 2.0 ;
 199   par[4]      =  TMath::Tan(theta) * r0_left;
 200   par[5]      =  TMath::Tan(theta) * r5_left;
 201   par[6]      =  0.0;
 202   par[7]      =  height_left / 2.0 ;
 203   par[8]      =  TMath::Tan(theta) * r0_left;
 204   par[9]      =  TMath::Tan(theta) * r5_left;
 205   par[10]     =  0.0;
 206
 207
 208   gMC->Gsvolu("V0L0","TRAP",idtmed[3010],par,11);  // air volume
 209
 210   Float_t   dist1_left;
 211   Float_t   r1_left;
 212   Float_t   offset_left;
 213
 214   dist1_left     =  (- height_left + height1_left) /2.0;
 215   r1_left        =  r0_left + height1_left;
 216   offset_left    = - fThickness1/2.0 + 0.1;
 217
 218   par[0]    =  half_thick_qua1 - thick_alu;
 219   par[3]    =  height1_left / 2.0 - thick_alu;
 220   par[4]    =  TMath::Tan(theta) * r0_left - thick_alu;
 221   par[5]    =  TMath::Tan(theta) * r1_left- thick_alu;
 222   par[7]    =  height1_left / 2.0 - thick_alu;
 223   par[8]    =  TMath::Tan(theta) * r0_left - thick_alu;
 224   par[9]    =  TMath::Tan(theta) * r1_left - thick_alu;
 225
 226
 227   gMC->Gsvolu("V0L1","TRAP",idtmed[3002],par,11);  // quartz volume
 228   gMC->Gspos("V0L1",1,"V0L0", 0.0, dist1_left , 0.0, 0,"ONLY");
 229
 230   Float_t   dist2_left;
 231   Float_t   r2_left;
 232
 233   dist2_left     =    (- height_left + height2_left) /2.0 + height1_left;
 234   r2_left        =       r1_left + height2_left;
 235
 236   par[0]    =  half_thick_qua1 - thick_alu;
 237   par[3]    =  height2_left / 2.0 - thick_alu;
 238   par[4]    =  TMath::Tan(theta) * r1_left - thick_alu;
 239   par[5]    =  TMath::Tan(theta) * r2_left - thick_alu;
 240   par[7]    =  height2_left / 2.0 - thick_alu;
 241   par[8]    =  TMath::Tan(theta) * r1_left - thick_alu;
 242   par[9]    =  TMath::Tan(theta) * r2_left - thick_alu;
 243
 244   gMC->Gsvolu("V0L2","TRAP",idtmed[3002],par,11);  // quartz volume
 245   gMC->Gspos("V0L2",1,"V0L0", 0.0, dist2_left , 0.0, 0,"ONLY");
 246
 247
 248   Float_t   dist3_left;
 249   Float_t   r3_left;
 250
 251   dist3_left     =    (- height_left + height3_left) /2.0 + height1_left + height2_left;
 252   r3_left        =       r2_left + height3_left;
 253
 254   par[0]    =  half_thick_qua1 - thick_alu;
 255   par[3]    =  height3_left / 2.0 - thick_alu;
 256   par[4]    =  TMath::Tan(theta) * r2_left - thick_alu;
 257   par[5]    =  TMath::Tan(theta) * r3_left - thick_alu;
 258   par[7]    =  height3_left / 2.0 - thick_alu;
 259   par[8]    =  TMath::Tan(theta) * r2_left - thick_alu;
 260   par[9]    =  TMath::Tan(theta) * r3_left - thick_alu;
 261
 262   gMC->Gsvolu("V0L3","TRAP",idtmed[3002],par,11);  // quartz volume
 263   gMC->Gspos("V0L3",1,"V0L0", 0.0, dist3_left , 0.0, 0,"ONLY");
 264
 265   Float_t   dist4_left;
 266   Float_t   r4_left;
 267
 268   dist4_left     =    (- height_left + height4_left) /2.0 + height1_left
 269                                      + height2_left + height3_left;
 270   r4_left        =       r3_left + height4_left;
 271
 272   par[0]    =  half_thick_qua1 - thick_alu;
 273   par[3]    =  height4_left / 2.0 - thick_alu;
 274   par[4]    =  TMath::Tan(theta) * r3_left - thick_alu;
 275   par[5]    =  TMath::Tan(theta) * r4_left - thick_alu;
 276   par[7]    =  height4_left / 2.0 - thick_alu;
 277   par[8]    =  TMath::Tan(theta) * r3_left - thick_alu;
 278   par[9]    =  TMath::Tan(theta) * r4_left - thick_alu;
 279
 280   gMC->Gsvolu("V0L4","TRAP",idtmed[3002],par,11);  // quartz volume
 281   gMC->Gspos("V0L4",1,"V0L0", 0.0, dist4_left , 0.0, 0,"ONLY");
 282
 283
 284   Float_t   dist5_left;
 285
 286
 287   dist5_left     =    (- height_left + height5_left) /2.0 + height1_left
 288                                      + height2_left + height3_left + height4_left;
 289
 290
 291   par[0]    =  half_thick_qua1 - thick_alu;
 292   par[3]    =  height5_left / 2.0 - thick_alu;
 293   par[4]    =  TMath::Tan(theta) * r4_left - thick_alu;
 294   par[5]    =  TMath::Tan(theta) * r5_left - thick_alu;
 295   par[7]    =  height5_left / 2.0 - thick_alu;
 296   par[8]    =  TMath::Tan(theta) * r4_left - thick_alu;
 297   par[9]    =  TMath::Tan(theta) * r5_left - thick_alu;
 298
 299   gMC->Gsvolu("V0L5","TRAP",idtmed[3002],par,11);  // quartz volume
 300   gMC->Gspos("V0L5",1,"V0L0", 0.0, dist5_left , 0.0, 0,"ONLY");
 301
 302
 303 //............................................................................
 304
 305 // Creation of mother volume V0RI - right part - :
 306
 307
 308   partube[0] = r0 - 0.2;
 309   partube[1] = (r5 + 1.0) / TMath::Cos(theta);
 310   partube[2] = fThickness/2.0;
 311
 312
 313   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 314
 315 // Creation of  carbon lids (1 mm thick) to keep V0RI box shut...
 316
 317   Float_t   parbox[10];
 318
 319   parbox[0] =    0.;
 320   parbox[1] =  360.;
 321   parbox[2] =    12;
 322   parbox[3] =     2;
 323   parbox[4] =  -0.1/2.0;
 324   parbox[5] =  r0;
 325   parbox[6] =  r5;
 326   parbox[7] =  +0.1/2.0;
 327   parbox[8] =  r0;
 328   parbox[9] =  r5;
 329
 330
 331   gMC->Gsvolu("V0CA","PGON",idtmed[3001],parbox,10);
 332   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-parbox[7],0,"ONLY");
 333   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+parbox[7],0,"ONLY");
 334
 335 // Creation of aluminum rings to maintain the V0RI pieces ...
 336
 337   parbox[4] =  -fThickness/2.0;
 338   parbox[5] =  r0 -0.2;
 339   parbox[6] =  r0;
 340   parbox[7] =  +fThickness/2.0;
 341   parbox[8] =  r0 -0.2;
 342   parbox[9] =  r0;
 343
 344   gMC->Gsvolu("V0IR","PGON",idtmed[3003],parbox,10);
 345   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 346
 347   parbox[4] =  -fThickness/2.0;
 348   parbox[5] =  r5;
 349   parbox[6] =  r5 + 1.0;
 350   parbox[7] =  +fThickness/2.0;
 351   parbox[8] =  r5;
 352   parbox[9] =  r5 + 1.0;
 353
 354   gMC->Gsvolu("V0ER","PGON",idtmed[3003],parbox,10);
 355   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 356
 357 // Mother volume V0R0 in which will be set 5  quartz cells
 358 // each one  WRAPPED in reflecting aluminum :
 359
 360   Float_t   dist0;
 361
 362   dist0     =  r0 + height / 2.0;
 363   thick_alu =  2.0*half_thick_alu;
 364
 365   par[0]    =  half_thick_qua1;
 366   par[1]    =  0.0;
 367   par[2]    =  0.0;
 368   par[3]    =  height / 2.0 ;
 369   par[4]    =  TMath::Tan(theta) * r0;
 370   par[5]    =  TMath::Tan(theta) * r5;
 371   par[6]    =  0.0;
 372   par[7]    =  height / 2.0 ;
 373   par[8]    =  TMath::Tan(theta) * r0;
 374   par[9]    =  TMath::Tan(theta) * r5;
 375   par[10]   =  0.0;
 376
 377
 378   gMC->Gsvolu("V0R0","TRAP",idtmed[3010],par,11);  // air volume
 379
 380 // Elementary cell of ring 1 :
 381
 382   Float_t   dist1;
 383   Float_t   r1;
 384   Float_t   offset;
 385
 386   dist1     =  (- height + height1) /2.0;
 387   r1        =  r0 + height1;
 388   offset    = - fThickness/2.0 + 0.1;
 389
 390   par[0]    =  half_thick_qua1 - thick_alu;
 391   par[3]    =  height1 / 2.0 - thick_alu;
 392   par[4]    =  TMath::Tan(theta) * r0 - thick_alu;
 393   par[5]    =  TMath::Tan(theta) * r1- thick_alu;
 394   par[7]    =  height1 / 2.0 - thick_alu;
 395   par[8]    =  TMath::Tan(theta) * r0 - thick_alu;
 396   par[9]    =  TMath::Tan(theta) * r1 - thick_alu;
 397
 398
 399   gMC->Gsvolu("V0R1","TRAP",idtmed[3002],par,11);  // quartz volume
 400   gMC->Gspos("V0R1",1,"V0R0", 0.0, dist1 , 0.0, 0,"ONLY");
 401
 402   par[0]    =  half_thick_alu;
 403
 404   gMC->Gsvolu("V0A1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 405   gMC->Gspos("V0A1",1,"V0R1",0.0,0.0, - half_thick_qua1 + half_thick_alu,0,"ONLY");
 406   gMC->Gspos("V0A1",2,"V0R1",0.0,0.0, + half_thick_qua1 - half_thick_alu,0,"ONLY");
 407
 408   parbox[0] = half_thick_alu;
 409   parbox[1] = height1 / TMath::Cos(theta)/ 2.0;
 410   parbox[2] = half_thick_qua1;
 411
 412   gMC->Gsvolu("V0A2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 413   Float_t  theta_deg = 180./6./2.0;
 414   Float_t h1;
 415   h1 = TMath::Tan(theta) * (r0 + height1/2.0);
 416   AliMatrix(idrotm[911],90.0,+theta_deg,90.0,90.+theta_deg,0.0,0.);
 417   gMC->Gspos("V0A2",1,"V0R1",-h1 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 418   AliMatrix(idrotm[912],90.0,-theta_deg,90.0,90.-theta_deg,0.0,0.);
 419   gMC->Gspos("V0A2",2,"V0R1",+h1 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 420
 421   parbox[0] = TMath::Tan(theta) * r0;
 422   parbox[1] = half_thick_alu;
 423   parbox[2] = half_thick_qua1;
 424   gMC->Gsvolu("V0A3","BOX",idtmed[3004],parbox,3);
 425   gMC->Gspos("V0A3",1,"V0R1",0.0, - (height1/2.0) + half_thick_alu ,0.0,0,"ONLY");
 426
 427
 428   parbox[0] = TMath::Tan(theta) * (r0 + height1);
 429   parbox[1] = half_thick_alu;
 430   parbox[2] = half_thick_qua1;
 431   gMC->Gsvolu("V0A4","BOX",idtmed[3004],parbox,3);
 432   gMC->Gspos("V0A4",1,"V0R1",0.0, (height1/2.0) - half_thick_alu,0.0,0,"ONLY");
 433
 434
 435 //  Elementary cell of ring 2 :
 436
 437   Float_t   dist2;
 438   Float_t   r2;
 439
 440   dist2     =    (- height + height2) /2.0 + height1;
 441   r2        =       r1 + height2;
 442
 443   par[0]    =  half_thick_qua2 - thick_alu;
 444   par[3]    =  height2 / 2.0 - thick_alu;
 445   par[4]    =  TMath::Tan(theta) * r1 - thick_alu;
 446   par[5]    =  TMath::Tan(theta) * r2 - thick_alu;
 447   par[7]    =  height2 / 2.0 - thick_alu;
 448   par[8]    =  TMath::Tan(theta) * r1 - thick_alu;
 449   par[9]    =  TMath::Tan(theta) * r2 - thick_alu;
 450
 451   gMC->Gsvolu("V0R2","TRAP",idtmed[3002],par,11);  // quartz volume
 452   gMC->Gspos("V0R2",1,"V0R0", 0.0, dist2 , - half_thick_qua1 + half_thick_qua2, 0,"ONLY");
 453
 454   par[0]    =  half_thick_alu;
 455
 456   gMC->Gsvolu("V0B1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 457   gMC->Gspos("V0B1",1,"V0R2",0.0,0.0, - half_thick_qua2 + half_thick_alu,0,"ONLY");
 458   gMC->Gspos("V0B1",2,"V0R2",0.0,0.0, + half_thick_qua2 - half_thick_alu,0,"ONLY");
 459
 460   parbox[0] = half_thick_alu;
 461   parbox[1] = height2 / TMath::Cos(theta)/ 2.0;
 462   parbox[2] = half_thick_qua2;
 463
 464   gMC->Gsvolu("V0B2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 465   Float_t h2;
 466   h2 = TMath::Tan(theta) * (r0  + height1 + height2/2.0);
 467   gMC->Gspos("V0B2",1,"V0R2",-h2 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 468   gMC->Gspos("V0B2",2,"V0R2",+h2 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 469
 470   parbox[0] = TMath::Tan(theta) * (r0 + height1);
 471   parbox[1] = half_thick_alu;
 472   parbox[2] = half_thick_qua2;
 473   gMC->Gsvolu("V0B3","BOX",idtmed[3004],parbox,3);
 474   gMC->Gspos("V0B3",1,"V0R2",0.0, - (height2/2.0) + half_thick_alu ,0.0,0,"ONLY");
 475
 476
 477   parbox[0] = TMath::Tan(theta) * (r0 + height1 +  height2);
 478   parbox[1] = half_thick_alu;
 479   parbox[2] = half_thick_qua2;
 480   gMC->Gsvolu("V0B4","BOX",idtmed[3004],parbox,3);
 481   gMC->Gspos("V0B4",1,"V0R2",0.0, (height2/2.0) - half_thick_alu,0.0,0,"ONLY");
 482
 483
 484 // Elementary cell  ring 3 :
 485
 486   Float_t   dist3;
 487   Float_t   r3;
 488
 489   dist3     =    (- height + height3) /2.0 + height1 + height2;
 490   r3        =       r2 + height3;
 491
 492   par[0]    =  half_thick_qua3 - thick_alu;
 493   par[3]    =  height3 / 2.0 - thick_alu;
 494   par[4]    =  TMath::Tan(theta) * r2 - thick_alu;
 495   par[5]    =  TMath::Tan(theta) * r3 - thick_alu;
 496   par[7]    =  height3 / 2.0 - thick_alu;
 497   par[8]    =  TMath::Tan(theta) * r2 - thick_alu;
 498   par[9]    =  TMath::Tan(theta) * r3 - thick_alu;
 499
 500   gMC->Gsvolu("V0R3","TRAP",idtmed[3002],par,11);  // quartz volume
 501   gMC->Gspos("V0R3",1,"V0R0", 0.0, dist3 , - half_thick_qua1 +  half_thick_qua3, 0,"ONLY");
 502
 503
 504   par[0]    =  half_thick_alu;
 505
 506   gMC->Gsvolu("V0C1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 507   gMC->Gspos("V0C1",1,"V0R3",0.0,0.0, - half_thick_qua3 + half_thick_alu,0,"ONLY");
 508   gMC->Gspos("V0C1",2,"V0R3",0.0,0.0, + half_thick_qua3 - half_thick_alu,0,"ONLY");
 509
 510   parbox[0] = half_thick_alu;
 511   parbox[1] = height3 / TMath::Cos(theta)/ 2.0;
 512   parbox[2] = half_thick_qua3;
 513
 514   gMC->Gsvolu("V0C2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 515   Float_t h3;
 516   h3 = TMath::Tan(theta) * (r0  + height1 + height2 + height3/2.0);
 517   gMC->Gspos("V0C2",1,"V0R3",-h3 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 518   gMC->Gspos("V0C2",2,"V0R3",+h3 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 519
 520   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2);
 521   parbox[1] = half_thick_alu;
 522   parbox[2] = half_thick_qua3;
 523   gMC->Gsvolu("V0C3","BOX",idtmed[3004],parbox,3);
 524   gMC->Gspos("V0C3",1,"V0R3",0.0, - (height3/2.0) + half_thick_alu ,0.0,0,"ONLY");
 525
 526
 527   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
 528   parbox[1] = half_thick_alu;
 529   parbox[2] = half_thick_qua3;
 530   gMC->Gsvolu("V0C4","BOX",idtmed[3004],parbox,3);
 531   gMC->Gspos("V0C4",1,"V0R3",0.0, (height3/2.0) - half_thick_alu,0.0,0,"ONLY");
 532
 533
 534 // Elementary cell  ring 4 :
 535
 536   Float_t   dist4;
 537   Float_t   r4;
 538
 539   dist4     =    (- height + height4) /2.0 + height1 + height2 + height3;
 540   r4        =       r3 + height4;
 541
 542   par[0]    =  half_thick_qua4 - thick_alu;
 543   par[3]    =  height4 / 2.0 - thick_alu;
 544   par[4]    =  TMath::Tan(theta) * r3 - thick_alu;
 545   par[5]    =  TMath::Tan(theta) * r4 - thick_alu;
 546   par[7]    =  height4 / 2.0 - thick_alu;
 547   par[8]    =  TMath::Tan(theta) * r3 - thick_alu;
 548   par[9]    =  TMath::Tan(theta) * r4 - thick_alu;
 549
 550   gMC->Gsvolu("V0R4","TRAP",idtmed[3002],par,11);  // quartz volume
 551   gMC->Gspos("V0R4",1,"V0R0", 0.0, dist4 , - half_thick_qua1 + half_thick_qua4, 0,"ONLY");
 552
 553
 554   par[0]    =  half_thick_alu;
 555
 556   gMC->Gsvolu("V0D1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 557   gMC->Gspos("V0D1",1,"V0R4",0.0,0.0, - half_thick_qua4 + half_thick_alu,0,"ONLY");
 558   gMC->Gspos("V0D1",2,"V0R4",0.0,0.0, + half_thick_qua4 - half_thick_alu,0,"ONLY");
 559
 560   parbox[0] = half_thick_alu;
 561   parbox[1] = height4 / TMath::Cos(theta)/ 2.0;
 562   parbox[2] = half_thick_qua4;
 563
 564   gMC->Gsvolu("V0D2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 565   Float_t h4;
 566   h4 = TMath::Tan(theta) * (r0  + height1 + height2 + height3 + height4/2.0);
 567   gMC->Gspos("V0D2",1,"V0R4",-h4 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 568   gMC->Gspos("V0D2",2,"V0R4",+h4 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 569
 570   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
 571   parbox[1] = half_thick_alu;
 572   parbox[2] = half_thick_qua4;
 573   gMC->Gsvolu("V0D3","BOX",idtmed[3004],parbox,3);
 574   gMC->Gspos("V0D3",1,"V0R4",0.0, - (height4/2.0) + half_thick_alu ,0.0,0,"ONLY");
 575
 576
 577   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
 578   parbox[1] = half_thick_alu;
 579   parbox[2] = half_thick_qua4;
 580   gMC->Gsvolu("V0D4","BOX",idtmed[3004],parbox,3);
 581   gMC->Gspos("V0D4",1,"V0R4",0.0, (height4/2.0) - half_thick_alu,0.0,0,"ONLY");
 582
 583
 584 // Elementary cell  ring 5 :
 585
 586   Float_t   dist5;
 587
 588   dist5     =    (- height + height5) /2.0 + height1 + height2 + height3 + height4;
 589
 590   par[0]    =  half_thick_qua5 - thick_alu;
 591   par[3]    =  height5 / 2.0 - thick_alu;
 592   par[4]    =  TMath::Tan(theta) * r4 - thick_alu;
 593   par[5]    =  TMath::Tan(theta) * r5 - thick_alu;
 594   par[7]    =  height5 / 2.0 - thick_alu;
 595   par[8]    =  TMath::Tan(theta) * r4 - thick_alu;
 596   par[9]    =  TMath::Tan(theta) * r5 - thick_alu;
 597
 598   gMC->Gsvolu("V0R5","TRAP",idtmed[3002],par,11);  // quartz volume
 599   gMC->Gspos("V0R5",1,"V0R0", 0.0, dist5 , - half_thick_qua1 +  half_thick_qua5, 0,"ONLY");
 600
 601
 602   par[0]    =  half_thick_alu;
 603
 604   gMC->Gsvolu("V0E1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 605   gMC->Gspos("V0E1",1,"V0R5",0.0,0.0, - half_thick_qua5 + half_thick_alu,0,"ONLY");
 606   gMC->Gspos("V0E1",2,"V0R5",0.0,0.0, + half_thick_qua5 - half_thick_alu,0,"ONLY");
 607
 608   parbox[0] = half_thick_alu;
 609   parbox[1] = height5 / TMath::Cos(theta)/ 2.0;
 610   parbox[2] = half_thick_qua5;
 611
 612   gMC->Gsvolu("V0E2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 613   Float_t h5;
 614   h5 = TMath::Tan(theta) * (r0  + height1 + height2 + height3 + height4 + height5/2.0);
 615   gMC->Gspos("V0E2",1,"V0R5",-h5 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 616   gMC->Gspos("V0E2",2,"V0R5",+h5 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 617
 618   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
 619   parbox[1] = half_thick_alu;
 620   parbox[2] = half_thick_qua5;
 621   gMC->Gsvolu("V0E3","BOX",idtmed[3004],parbox,3);
 622   gMC->Gspos("V0E3",1,"V0R5",0.0, - (height5/2.0) + half_thick_alu ,0.0,0,"ONLY");
 623
 624
 625   parbox[0] = TMath::Tan(theta) * r5;
 626   parbox[1] = half_thick_alu;
 627   parbox[2] = half_thick_qua5;
 628   gMC->Gsvolu("V0E4","BOX",idtmed[3004],parbox,3);
 629   gMC->Gspos("V0E4",1,"V0R5",0.0, (height5/2.0) - half_thick_alu,0.0,0,"ONLY");
 630
 631
 632   Float_t  phi_rad ;
 633   Float_t  phi_deg = 180./6.;
 634
 635  // Partie de droite :
 636
 637   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 638       {
 639         phi_rad = phi*pi/180.;
 640         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 641         gMC->Gspos("V0R0",n_detec_R,"V0RI",-dist0*TMath::Sin(phi_rad),
 642                           dist0*TMath::Cos(phi_rad),offset + half_thick_qua1,idrotm[902],"ONLY");
 643         n_detec_R++;
 644        }
 645
 646   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,zdet,0,"ONLY");
 647
 648   n_cells_R = (n_detec_R - 1) * 5;
 649   printf(" \n\n\n");
 650   printf("    Number of cells on Right side =   %d\n",  n_cells_R);
 651
 652 // Partie de gauche :
 653
 654   for(Float_t  phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 655       {
 656         phi_rad = phi*pi/180.;
 657         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 658         gMC->Gspos("V0L0",n_detec_L,"V0LE",-dist0_left*TMath::Sin(phi_rad),
 659                           dist0_left*TMath::Cos(phi_rad),offset_left + half_thick_qua1,idrotm[902],"ONLY");
 660         n_detec_L++;
 661        }
 662
 663
 664   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,-350.0-fThickness1/2.0,0,"ONLY");
 665
 666   n_cells_L = (n_detec_L - 1) * 5;
 667   printf(" \n\n\n");
 668   printf("    Number of cells on Left side  =   %d\n\n",  n_cells_L);
 669
 670
 671 }
 672
 673
 674
 675 //_____________________________________________________________________________
 676 void AliVZEROv0::BuildGeometry()
 677 {
 678
 679   // Builds simple ROOT TNode geometry for event display
 680
 681
 682   Int_t i;
 683
 684   printf("\n");
 685   for(i=0;i<30;i++) printf("*");
 686   printf(" VZERO BuildGeometry ");
 687   for(i=0;i<30;i++) printf("*");
 688   printf("\n");
 689
 690   TNode *Top;
 691
 692   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 693   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 694   TNode *V0Lnode, *V0Lnode0;
 695   TNode *V0Lnode1, *V0Lnode2, *V0Lnode3, *V0Lnode4, *V0Lnode5;
 696
 697   const int kColorVZERO  = kGreen;
 698
 699   Top = gAlice->GetGeometry()->GetNode("alice");
 700
 701   Float_t  height1, height2, height3, height4, height5;
 702   Float_t  height;
 703   Float_t  theta;
 704   Float_t  half_thick_alu;
 705   Float_t  half_thick_qua1,half_thick_qua2,half_thick_qua3;
 706   Float_t  half_thick_qua4,half_thick_qua5;
 707   Float_t  zdet;
 708   Float_t  r0, r5;
 709   Float_t  pi = TMath::Pi();
 710   Float_t  thick_alu;
 711
 712 //   height1           =     1.9;
 713 //   height2           =     3.7;
 714 //   height3           =     6.2;
 715 //   height4           =    10.5;
 716 //   height5           =    10.5;
 717
 718   height1           =     2.0;           // height of cell 1, in cm
 719   height2           =     3.2;           // height of cell 2, in cm
 720   height3           =     4.9;           // height of cell 3, in cm
 721   height4           =     7.5;           // height of cell 4, in cm
 722   height5           =    12.0;           // height of cell 5, in cm
 723
 724   theta             = pi/6.0/2.0;
 725   half_thick_alu    = 0.0025;
 726   thick_alu         = 2.0 * half_thick_alu;
 727   half_thick_qua1   = fThickness1/2.0;
 728   half_thick_qua2   = half_thick_qua1  - 0.25;
 729   half_thick_qua3   = half_thick_qua2  - 0.25;
 730   half_thick_qua4   = half_thick_qua3  - 0.25;
 731   half_thick_qua5   = half_thick_qua4  - 0.25;
 732
 733   zdet              =    86.9 +fThickness/2.0;
 734   r0                =    4.0;
 735   height            =    height1 + height2 + height3 + height4 + height5;
 736   r5                =    r0 + height;
 737
 738   Float_t   partube[3];
 739
 740   partube[0] =  r0 - 0.2;
 741   partube[1] = (r5 + 1.0) / TMath::Cos(theta);
 742   partube[2] = fThickness/2.0;
 743
 744   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 745
 746   Top->cd();
 747
 748   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
 749
 750   V0Rnode->SetLineColor(kBlue);
 751   fNodes->Add(V0Rnode);
 752
 753   V0Rnode->SetVisibility(2);
 754
 755
 756 // Rondelles de carbone (epaisseur 1 mm) de maintien des cellules ...
 757
 758
 759   Float_t   parbox[10];
 760
 761   parbox[0] =    0.;
 762   parbox[1] =  360.;
 763   parbox[2] =   12.;
 764   parbox[3] =    2.;
 765   parbox[4] =  -0.1/2.0;
 766   parbox[5] =  r0;
 767   parbox[6] =  r5;
 768   parbox[7] =  +0.1/2.0;
 769   parbox[8] =  r0;
 770   parbox[9] =  r5;
 771
 772
 773   TPGON *V0CA = new TPGON("V0CA", "V0CA", "void",parbox[0], parbox[1],
 774                           static_cast<Int_t>(parbox[2]),
 775                           static_cast<Int_t>(parbox[3]));
 776
 777   V0CA->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 778   V0CA->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 779
 780   V0Rnode->cd();
 781   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-parbox[7],0);
 782   V0Rnode6->SetLineColor(kYellow);
 783   fNodes->Add(V0Rnode6);
 784   V0Rnode->cd();
 785   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+parbox[7],0);
 786   V0Rnode7->SetLineColor(kYellow);
 787   fNodes->Add(V0Rnode7);
 788
 789   parbox[4] =  -fThickness/2.0;
 790   parbox[5] =  r0 - 0.2;
 791   parbox[6] =  r0;
 792   parbox[7] =  +fThickness/2.0;
 793   parbox[8] =  r0 - 0.2;
 794   parbox[9] =  r0;
 795
 796   TPGON  *V0IR = new TPGON("V0IR","V0IR","void",  parbox[0], parbox[1],
 797                           static_cast<Int_t>(parbox[2]),
 798                           static_cast<Int_t>(parbox[3]));
 799   V0IR->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 800   V0IR->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 801
 802   V0Rnode->cd();
 803   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 804   V0Rnode8->SetLineColor(kYellow);
 805   fNodes->Add(V0Rnode8);
 806
 807   parbox[4] =  -fThickness/2.0;
 808   parbox[5] =  r5;
 809   parbox[6] =  r5 + 1.0;
 810   parbox[7] =  +fThickness/2.0;
 811   parbox[8] =  r5;
 812   parbox[9] =  r5 + 1.0;
 813
 814   TPGON  *V0ER = new TPGON("V0ER","V0ER","void",  parbox[0], parbox[1],
 815                           static_cast<Int_t>(parbox[2]),
 816                           static_cast<Int_t>(parbox[3]));
 817
 818   V0ER->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 819   V0ER->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 820
 821   V0Rnode->cd();
 822   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 823   V0Rnode9->SetLineColor(kYellow);
 824   fNodes->Add(V0Rnode9);
 825
 826   Float_t   dist0;
 827   Float_t   par[11];
 828
 829   dist0     =  r0 + height / 2.0;
 830   thick_alu =  2.0*half_thick_alu;
 831
 832   par[0]    =  half_thick_qua1;
 833   par[1]    =  0.0;
 834   par[2]    =  0.0;
 835   par[3]    =  height / 2.0 ;
 836   par[4]    =  TMath::Tan(theta) * r0;
 837   par[5]    =  TMath::Tan(theta) * r5;
 838   par[6]    =  0.0;
 839   par[7]    =  height / 2.0 ;
 840   par[8]    =  TMath::Tan(theta) * r0;
 841   par[9]    =  TMath::Tan(theta) * r5;
 842   par[10]   =  0.0;
 843
 844   TTRAP *V0R0 = new TTRAP("V0R0", "V0R0", "void", par[0], par[1], par[2], par[3],
 845                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 846
 847   Float_t   dist1;
 848   Float_t   r1;
 849   Float_t   offset;
 850
 851   dist1     =  (- height + height1) /2.0;
 852   r1        =  r0 + height1;
 853   offset    = - fThickness/2.0 + 0.1;
 854
 855   par[0]    =  half_thick_qua1 - thick_alu;
 856   par[3]    =  height1 / 2.0 - thick_alu;
 857   par[4]    =  TMath::Tan(theta) * r0 - thick_alu;
 858   par[5]    =  TMath::Tan(theta) * r1- thick_alu;
 859   par[7]    =  height1 / 2.0 - thick_alu;
 860   par[8]    =  TMath::Tan(theta) * r0 - thick_alu;
 861   par[9]    =  TMath::Tan(theta) * r1 - thick_alu;
 862
 863   TTRAP *V0R1 = new TTRAP("V0R1", "V0R1", "void", par[0], par[1], par[2], par[3],
 864                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 865
 866
 867   Float_t   dist2;
 868   Float_t   r2;
 869
 870   dist2     =    (- height + height2) /2.0 + height1;
 871   r2        =       r1 + height2;
 872
 873   par[0]    =  half_thick_qua2 - thick_alu;
 874   par[3]    =  height2 / 2.0 - thick_alu;
 875   par[4]    =  TMath::Tan(theta) * r1 - thick_alu;
 876   par[5]    =  TMath::Tan(theta) * r2 - thick_alu;
 877   par[7]    =  height2 / 2.0 - thick_alu;
 878   par[8]    =  TMath::Tan(theta) * r1 - thick_alu;
 879   par[9]    =  TMath::Tan(theta) * r2 - thick_alu;
 880
 881
 882   TTRAP *V0R2 = new TTRAP("V0R2", "V0R2", "void", par[0], par[1], par[2], par[3],
 883                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 884
 885
 886   Float_t   dist3;
 887   Float_t   r3;
 888
 889   dist3     =    (- height + height3) /2.0 + height1 + height2;
 890   r3        =       r2 + height3;
 891
 892   par[0]    =  half_thick_qua3 - thick_alu;
 893   par[3]    =  height3 / 2.0 - thick_alu;
 894   par[4]    =  TMath::Tan(theta) * r2 - thick_alu;
 895   par[5]    =  TMath::Tan(theta) * r3 - thick_alu;
 896   par[7]    =  height3 / 2.0 - thick_alu;
 897   par[8]    =  TMath::Tan(theta) * r2 - thick_alu;
 898   par[9]    =  TMath::Tan(theta) * r3 - thick_alu;
 899
 900
 901   TTRAP *V0R3 = new TTRAP("V0R3", "V0R3", "void", par[0], par[1], par[2], par[3],
 902                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 903
 904
 905   Float_t   dist4;
 906   Float_t   r4;
 907
 908   dist4     =    (- height + height4) /2.0 + height1 + height2 + height3;
 909   r4        =       r3 + height4;
 910
 911   par[0]    =  half_thick_qua4 - thick_alu;
 912   par[3]    =  height4 / 2.0 - thick_alu;
 913   par[4]    =  TMath::Tan(theta) * r3 - thick_alu;
 914   par[5]    =  TMath::Tan(theta) * r4 - thick_alu;
 915   par[7]    =  height4 / 2.0 - thick_alu;
 916   par[8]    =  TMath::Tan(theta) * r3 - thick_alu;
 917   par[9]    =  TMath::Tan(theta) * r4 - thick_alu;
 918
 919
 920   TTRAP *V0R4 = new TTRAP("V0R4", "V0R4", "void", par[0], par[1], par[2], par[3],
 921                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 922
 923
 924   Float_t   dist5;
 925
 926   dist5     =    (- height + height5) /2.0 + height1 + height2 + height3 + height4;
 927
 928   par[0]    =  half_thick_qua5 - thick_alu;
 929   par[3]    =  height5 / 2.0 - thick_alu;
 930   par[4]    =  TMath::Tan(theta) * r4 - thick_alu;
 931   par[5]    =  TMath::Tan(theta) * r5 - thick_alu;
 932   par[7]    =  height5 / 2.0 - thick_alu;
 933   par[8]    =  TMath::Tan(theta) * r4 - thick_alu;
 934   par[9]    =  TMath::Tan(theta) * r5 - thick_alu;
 935
 936
 937   TTRAP *V0R5 = new TTRAP("V0R5", "V0R5", "void", par[0], par[1], par[2], par[3],
 938                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 939
 940
 941   Float_t  phi;
 942   Float_t  phi_deg= 180./6.;
 943   Float_t  phi_rad;
 944   Float_t  xdet,ydet;
 945   Int_t    n_detec_R = 1;
 946
 947   char     NameNode[12];
 948
 949
 950   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
 951   {
 952
 953     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 954
 955     phi_rad = phi*pi/180.;
 956     xdet = dist0*TMath::Sin(phi_rad);
 957     ydet = dist0*TMath::Cos(phi_rad);
 958
 959
 960     sprintf(NameNode,"SUBDER%d",n_detec_R);
 961
 962     V0Rnode->cd();
 963     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,-xdet,ydet, offset + half_thick_qua1,mat920);
 964     V0Rnode0->SetLineColor(kColorVZERO);
 965     fNodes->Add(V0Rnode0);
 966     n_detec_R++;
 967
 968     sprintf(NameNode,"SUBDER%d",n_detec_R);
 969     V0Rnode0->cd();
 970     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,dist1, 0.0,0);
 971     V0Rnode1->SetLineColor(kColorVZERO);
 972     fNodes->Add(V0Rnode1);
 973     n_detec_R++;
 974
 975     sprintf(NameNode,"SUBDER%d",n_detec_R);
 976     V0Rnode0->cd();
 977     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,dist2, - half_thick_qua1 + half_thick_qua2,0);
 978     V0Rnode2->SetLineColor(kColorVZERO);
 979     fNodes->Add(V0Rnode2);
 980     n_detec_R++;
 981
 982
 983     sprintf(NameNode,"SUBDER%d",n_detec_R);
 984     V0Rnode0->cd();
 985     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,dist3, - half_thick_qua1 + half_thick_qua3,0);
 986     V0Rnode3->SetLineColor(kColorVZERO);
 987     fNodes->Add(V0Rnode3);
 988     n_detec_R++;
 989
 990     sprintf(NameNode,"SUBDER%d",n_detec_R);
 991     V0Rnode0->cd();
 992     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,dist4, - half_thick_qua1 + half_thick_qua4,0);
 993     V0Rnode4->SetLineColor(kColorVZERO);
 994     fNodes->Add(V0Rnode4);
 995     n_detec_R++;
 996
 997     sprintf(NameNode,"SUBDER%d",n_detec_R);
 998     V0Rnode0->cd();
 999     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,dist5, - half_thick_qua1 + half_thick_qua5,0);
1000     V0Rnode5->SetLineColor(kColorVZERO);
1001     fNodes->Add(V0Rnode5);
1002     n_detec_R++;
1003
1004     V0Rnode0->SetVisibility(2);
1005
1006   }
1007
1008
1009 // Left side of VZERO :
1010
1011
1012   Float_t   dist0_left;
1013   Float_t   r0_left      =   4.3;
1014   Float_t   height1_left =   2.6;
1015   Float_t   height2_left =   4.1;
1016   Float_t   height3_left =   6.4;
1017   Float_t   height4_left =  10.2;
1018   Float_t   height5_left =  16.9;
1019   Float_t   height_left  = height1_left + height2_left + height3_left
1020                                         + height4_left + height5_left;
1021   Float_t   r5_left      = r0_left  + height_left;
1022
1023   partube[0] =  r0_left;
1024   partube[1] = (r5_left) / TMath::Cos(theta);
1025   partube[2] = fThickness1/2.0;
1026
1027   TTUBE *V0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
1028
1029   Top->cd();
1030
1031   V0Lnode = new TNode("V0LE","V0LE",V0LE,0.0,0.0,-350.0-fThickness1/2.0,0);
1032
1033   V0Lnode->SetLineColor(kBlue);
1034   fNodes->Add(V0Lnode);
1035
1036   V0Lnode->SetVisibility(2);
1037
1038   dist0_left  =  r0_left + height_left / 2.0;
1039   thick_alu   =  2.0*half_thick_alu;
1040
1041   par[0]      =  half_thick_qua1;
1042   par[1]      =  0.0;
1043   par[2]      =  0.0;
1044   par[3]      =  height_left / 2.0 ;
1045   par[4]      =  TMath::Tan(theta) * r0_left;
1046   par[5]      =  TMath::Tan(theta) * r5_left;
1047   par[6]      =  0.0;
1048   par[7]      =  height_left / 2.0 ;
1049   par[8]      =  TMath::Tan(theta) * r0_left;
1050   par[9]      =  TMath::Tan(theta) * r5_left;
1051   par[10]     =  0.0;
1052
1053   TTRAP *V0L0 = new TTRAP("V0L0", "V0L0", "void", par[0], par[1], par[2], par[3],
1054                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1055
1056
1057   Float_t   dist1_left;
1058   Float_t   r1_left;
1059   Float_t   offset_left;
1060
1061   dist1_left     =  (- height_left + height1_left) /2.0;
1062   r1_left        =  r0_left + height1_left;
1063   offset_left    = - fThickness1/2.0 + 0.1;
1064
1065   par[0]    =  half_thick_qua1 - thick_alu;
1066   par[3]    =  height1_left / 2.0 - thick_alu;
1067   par[4]    =  TMath::Tan(theta) * r0_left - thick_alu;
1068   par[5]    =  TMath::Tan(theta) * r1_left- thick_alu;
1069   par[7]    =  height1_left / 2.0 - thick_alu;
1070   par[8]    =  TMath::Tan(theta) * r0_left - thick_alu;
1071   par[9]    =  TMath::Tan(theta) * r1_left - thick_alu;
1072
1073   TTRAP *V0L1 = new TTRAP("V0L1", "V0L1", "void", par[0], par[1], par[2], par[3],
1074                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1075
1076   Float_t   dist2_left;
1077   Float_t   r2_left;
1078
1079   dist2_left     =    (- height_left + height2_left) /2.0 + height1_left;
1080   r2_left        =       r1_left + height2_left;
1081
1082   par[0]    =  half_thick_qua1 - thick_alu;
1083   par[3]    =  height2_left / 2.0 - thick_alu;
1084   par[4]    =  TMath::Tan(theta) * r1_left - thick_alu;
1085   par[5]    =  TMath::Tan(theta) * r2_left - thick_alu;
1086   par[7]    =  height2_left / 2.0 - thick_alu;
1087   par[8]    =  TMath::Tan(theta) * r1_left - thick_alu;
1088   par[9]    =  TMath::Tan(theta) * r2_left - thick_alu;
1089
1090   TTRAP *V0L2 = new TTRAP("V0L2", "V0L2", "void", par[0], par[1], par[2], par[3],
1091                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1092
1093
1094
1095   Float_t   dist3_left;
1096   Float_t   r3_left;
1097
1098   dist3_left     =    (- height_left + height3_left) /2.0 + height1_left + height2_left;
1099   r3_left        =       r2_left + height3_left;
1100
1101   par[0]    =  half_thick_qua1 - thick_alu;
1102   par[3]    =  height3_left / 2.0 - thick_alu;
1103   par[4]    =  TMath::Tan(theta) * r2_left - thick_alu;
1104   par[5]    =  TMath::Tan(theta) * r3_left - thick_alu;
1105   par[7]    =  height3_left / 2.0 - thick_alu;
1106   par[8]    =  TMath::Tan(theta) * r2_left - thick_alu;
1107   par[9]    =  TMath::Tan(theta) * r3_left - thick_alu;
1108
1109   TTRAP *V0L3 = new TTRAP("V0L3", "V0L3", "void", par[0], par[1], par[2], par[3],
1110                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1111
1112
1113   Float_t   dist4_left;
1114   Float_t   r4_left;
1115
1116   dist4_left     =    (- height_left + height4_left) /2.0 + height1_left
1117                                      + height2_left + height3_left;
1118   r4_left        =       r3_left + height4_left;
1119
1120   par[0]    =  half_thick_qua1 - thick_alu;
1121   par[3]    =  height4_left / 2.0 - thick_alu;
1122   par[4]    =  TMath::Tan(theta) * r3_left - thick_alu;
1123   par[5]    =  TMath::Tan(theta) * r4_left - thick_alu;
1124   par[7]    =  height4_left / 2.0 - thick_alu;
1125   par[8]    =  TMath::Tan(theta) * r3_left - thick_alu;
1126   par[9]    =  TMath::Tan(theta) * r4_left - thick_alu;
1127
1128   TTRAP *V0L4 = new TTRAP("V0L4", "V0L4", "void", par[0], par[1], par[2], par[3],
1129                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1130
1131
1132   Float_t   dist5_left;
1133
1134
1135   dist5_left     =    (- height_left + height5_left) /2.0 + height1_left
1136                                      + height2_left + height3_left + height4_left;
1137
1138
1139   par[0]    =  half_thick_qua1 - thick_alu;
1140   par[3]    =  height5_left / 2.0 - thick_alu;
1141   par[4]    =  TMath::Tan(theta) * r4_left - thick_alu;
1142   par[5]    =  TMath::Tan(theta) * r5_left - thick_alu;
1143   par[7]    =  height5_left / 2.0 - thick_alu;
1144   par[8]    =  TMath::Tan(theta) * r4_left - thick_alu;
1145   par[9]    =  TMath::Tan(theta) * r5_left - thick_alu;
1146
1147   TTRAP *V0L5 = new TTRAP("V0L5", "V0L5", "void", par[0], par[1], par[2], par[3],
1148                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
1149
1150
1151   Int_t    n_detec_L = 1;
1152
1153   for (phi = 15.0; phi < 360.0; phi = phi + phi_deg)
1154   {
1155
1156     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
1157
1158     phi_rad = phi*pi/180.;
1159     xdet = dist0_left*TMath::Sin(phi_rad);
1160     ydet = dist0_left*TMath::Cos(phi_rad);
1161
1162
1163     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1164
1165     V0Lnode->cd();
1166     V0Lnode0 = new TNode(NameNode,NameNode,V0L0,-xdet,ydet, offset_left + half_thick_qua1,mat920);
1167     V0Lnode0->SetLineColor(kColorVZERO);
1168     fNodes->Add(V0Lnode0);
1169     n_detec_L++;
1170
1171     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1172     V0Lnode0->cd();
1173     V0Lnode1 = new TNode(NameNode,NameNode,V0L1,0.0,dist1_left, 0.0,0);
1174     V0Lnode1->SetLineColor(kColorVZERO);
1175     fNodes->Add(V0Lnode1);
1176     n_detec_L++;
1177
1178     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1179     V0Lnode0->cd();
1180     V0Lnode2 = new TNode(NameNode,NameNode,V0L2,0.0,dist2_left, 0.0,0);
1181     V0Lnode2->SetLineColor(kColorVZERO);
1182     fNodes->Add(V0Lnode2);
1183     n_detec_L++;
1184
1185
1186     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1187     V0Lnode0->cd();
1188     V0Lnode3 = new TNode(NameNode,NameNode,V0L3,0.0,dist3_left, 0.0,0);
1189     V0Lnode3->SetLineColor(kColorVZERO);
1190     fNodes->Add(V0Lnode3);
1191     n_detec_L++;
1192
1193     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1194     V0Lnode0->cd();
1195     V0Lnode4 = new TNode(NameNode,NameNode,V0L4,0.0,dist4_left, 0.0,0);
1196     V0Lnode4->SetLineColor(kColorVZERO);
1197     fNodes->Add(V0Lnode4);
1198     n_detec_L++;
1199
1200     sprintf(NameNode,"SUBDEL%d",n_detec_L);
1201     V0Lnode0->cd();
1202     V0Lnode5 = new TNode(NameNode,NameNode,V0L5,0.0,dist5_left, 0.0,0);
1203     V0Lnode5->SetLineColor(kColorVZERO);
1204     fNodes->Add(V0Lnode5);
1205     n_detec_L++;
1206
1207     V0Lnode0->SetVisibility(2);
1208
1209   }
1210
1211
1212 }
1213
1214
1215 //------------------------------------------------------------------------
1216 void AliVZEROv0::CreateMaterials()
1217 {
1218     Int_t i;
1219
1220     printf("\n");
1221     for(i=0;i<30;i++) printf("*");
1222     printf(" VZERO create materials ");
1223     for(i=0;i<30;i++) printf("*");
1224     printf("\n");
1225
1226
1227     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,
1228                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
1229
1230
1231     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,
1232                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
1233
1234     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
1235                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
1236                                  1.662295, 1.68337 };
1237
1238     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
1239                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
1240
1241     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1242
1243
1244     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1245
1246
1247     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,
1248                                1e-4,1e-4,1e-4,1e-4 };
1249     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1250
1251
1252     Int_t *idtmed = fIdtmed->GetArray()-2999;
1253
1254
1255 //  Parameters related to Quarz (SiO2) :
1256
1257     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
1258     Int_t nlmatqua;
1259
1260     aqua[0]    = 28.09;
1261     aqua[1]    = 16.;
1262     zqua[0]    = 14.;
1263     zqua[1]    = 8.;
1264     densqua    = 2.64;
1265     nlmatqua   = -2;
1266     wmatqua[0] = 1.;
1267     wmatqua[1] = 2.;
1268
1269 // Parameters  related to aluminum sheets :
1270
1271     Float_t  aal   = 26.98;
1272     Float_t  zal   = 13.00;
1273     Float_t  densal=   2.7;
1274     Float_t  radlal=   8.9;
1275
1276 // Parameters  related to scintillator CH :
1277
1278     Float_t ascin[2] = {1.01,12.01};
1279     Float_t zscin[2] = {1,6};
1280     Float_t wscin[2] = {1,1};
1281     Float_t denscin  = 1.03;
1282
1283 //  Definition of materials :
1284
1285     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
1286     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500, 0, 0);
1287     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
1288     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
1289     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
1290     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
1291
1292
1293     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
1294
1295
1296     Int_t   ISXFLD = gAlice->Field()->Integ();
1297     Float_t SXMGMX = gAlice->Field()->Max();
1298
1299     Float_t tmaxfd, stemax, deemax, epsil, stmin;
1300
1301     tmaxfd = 10.;
1302     stemax = 0.1;
1303     deemax = 0.1;
1304     epsil  = 0.001;
1305     stmin  = 0.001;
1306
1307     printf(" \n");
1308     printf(" StepQua,    StepAlu    = %f %f \n",fMaxStepQua,fMaxStepAlu);
1309     printf(" DeStepQua,  DeStepAlu  = %f %f \n",fMaxDestepQua,fMaxDestepAlu);
1310     printf(" \n");
1311
1312
1313 //  Active Air :
1314     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX,
1315               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
1316
1317 //  Inactive air :
1318
1319     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX,
1320               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
1321
1322     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX,
1323               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
1324
1325     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX,
1326               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
1327
1328     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX,
1329               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
1330
1331
1332     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX,
1333               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
1334
1335     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003, 0, 0);
1336
1337     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
1338     gMC->Gstpar(idtmed[3000], "HADR", 1.);
1339     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
1340     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
1341
1342     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
1343     gMC->Gstpar(idtmed[3001], "HADR", 1.);
1344     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
1345     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
1346
1347     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
1348     gMC->Gstpar(idtmed[3002], "HADR", 1.);
1349     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
1350     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
1351     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
1352     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
1353
1354     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
1355     gMC->Gstpar(idtmed[3003], "HADR", 1.);
1356     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
1357     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
1358
1359     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
1360     gMC->Gstpar(idtmed[3004], "HADR", 1.);
1361     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
1362     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
1363     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
1364     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
1365
1366     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
1367     gMC->Gstpar(idtmed[3005], "HADR", 1.);
1368     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
1369     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
1370
1371     gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
1372     gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
1373
1374
1375 }
1376 //---------------------------------------------------------------------
1377 void AliVZEROv0::DrawModule()
1378 {
1379
1380 //  Drawing is done in DrawVZERO.C
1381
1382    Int_t i;
1383
1384    printf("\n");
1385    for(i=0;i<30;i++) printf("*");
1386    printf(" VZERO DrawModule ");
1387    for(i=0;i<30;i++) printf("*");
1388    printf("\n");
1389
1390
1391 }
1392
1393 //-------------------------------------------------------------------
1394 void AliVZEROv0::Init()
1395 {
1396 // Initialises version 0 of the VZERO Detector
1397 // Just prints an information message
1398
1399    printf(" VZERO version %d initialized \n",IsVersion());
1400
1401 //   gMC->SetMaxStep(fMaxStepAlu);
1402 //   gMC->SetMaxStep(fMaxStepQua);
1403
1404 //   AliVZERO::Init();
1405
1406 }
1407
1408 //-------------------------------------------------------------------
1409
1410 void AliVZEROv0::StepManager()
1411 {
1412
1413 //   (Very)Minimal version of StepManager
1414
1415
1416      Int_t  copy;
1417      static Int_t vol[4];
1418      static Float_t hits[15];
1419
1420      TLorentzVector pos;
1421
1422      TLorentzVector mom;
1423      Float_t        theta;
1424      Float_t        phi;
1425      Float_t        kRaddeg = 180/TMath::Pi();
1426      Float_t        RingNumber;
1427
1428      Int_t ipart;
1429
1430
1431 //     TGeant3 *geant3 = (TGeant3*) gMC;
1432 //     Int_t  Nphot = geant3->Gckin2()->ngphot;
1433
1434
1435 //   Only charged tracks :
1436
1437      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
1438
1439
1440      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
1441      vol[2]    = gMC->CurrentVolID(copy);
1442      vol[3]    = copy;
1443
1444      if      ( gMC->CurrentVolID(copy) == gMC->VolId("V0R1") ||
1445                gMC->CurrentVolID(copy) == gMC->VolId("V0L1") )
1446                RingNumber = 1.0;
1447      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R2") ||
1448                gMC->CurrentVolID(copy) == gMC->VolId("V0L2") )
1449                RingNumber = 2.0;
1450      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R3") ||
1451                gMC->CurrentVolID(copy) == gMC->VolId("V0L3") )
1452                RingNumber = 3.0;
1453      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R4") ||
1454                gMC->CurrentVolID(copy) == gMC->VolId("V0L4") )
1455                RingNumber = 4.0;
1456      else if ( gMC->CurrentVolID(copy) == gMC->VolId("V0R5") ||
1457                gMC->CurrentVolID(copy) == gMC->VolId("V0L5") )
1458                RingNumber = 5.0;
1459      else
1460                RingNumber = 0.0;
1461
1462      if (gMC->IsTrackEntering() && RingNumber > 0.5) {
1463
1464          gMC->TrackPosition(pos);
1465
1466          gMC->TrackMomentum(mom);
1467          Double_t tc   = mom[0]*mom[0]+mom[1]*mom[1];
1468          Double_t Pt   = TMath::Sqrt(tc);
1469          Double_t Pmom = TMath::Sqrt(tc+mom[2]*mom[2]);
1470
1471          theta   = Float_t(TMath::ATan2(Pt,Double_t(mom[2])))*kRaddeg;
1472          phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1473
1474          ipart  = gMC->TrackPid();
1475
1476          hits[0]  = pos[0];
1477          hits[1]  = pos[1];
1478          hits[2]  = pos[2];
1479          hits[3]  =  ipart;
1480
1481 //         Float_t ttime = gMC->TrackTime();
1482 //         hits[4] = ttime*1e9;
1483
1484          hits[4]  = gMC->TrackTime();
1485          hits[5]  = gMC->TrackCharge();
1486          hits[6]  = theta;
1487          hits[7]  = phi;
1488          hits[8]  = RingNumber;
1489
1490          hits[9]  = Pt;
1491          hits[10] = Pmom;
1492          hits[11] = mom[0];
1493          hits[12] = mom[1];
1494          hits[13] = mom[2];
1495
1496
1497          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
1498
1499          }
1500
1501 }
1502
1503 //_____________________________________________________________________________
1504 void AliVZEROv0::AddHit(Int_t track, Int_t *vol, Float_t *hits)
1505 {
1506   //
1507   // Add a VZERO hit
1508   //
1509
1510   TClonesArray &lhits = *fHits;
1511   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
1512 }
1513
1514 //---------------------------------------------------------------------
1515 void AliVZEROv0::AddDigits(Int_t *tracks, Int_t* digits)
1516 {
1517
1518    TClonesArray  &ldigits = *fDigits;
1519    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1520 }
1521
1522 //---------------------------------------------------------------------
1523 void AliVZEROv0::MakeBranch(Option_t *option)
1524 {
1525
1526   // Creates new branches in the current Root Tree
1527
1528
1529   char branchname[10];
1530   sprintf(branchname,"%s",GetName());
1531   printf(" fBufferSize = %d \n",fBufferSize);
1532
1533   const char *H = strstr(option,"H");
1534
1535   if (fHits   && TreeH() && H) {
1536     TreeH()->Branch(branchname,&fHits, fBufferSize);
1537     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1538   }
1539
1540   const char *D = strstr(option,"D");
1541   //
1542   if (fDigits   && gAlice->TreeD() && D) {
1543     gAlice->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1544     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1545   }
1546
1547 }