VZERO/AliVZEROv4.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 4  as designed by the Lyon group     //
  21 //   All comments should be sent to Brigitte CHEYNIS :              //
  22 //                                  b.cheynis@ipnl.in2p3.fr         //
  23 //   Geometry of the   24th of february 2004                        //
  24 //  (now 4 rings instead of 3 rings as in previous version)         //
  25 //   V0R (now V0C) sits between Z values  -89.4 and  -84.9 cm       //
  26 //   V0L (now V0A) sits between Z values +350.0 and +352.0 cm       //
  27 //   New coordinate system has been implemented in october 2003     //
  28 //                                                                  //
  29 //////////////////////////////////////////////////////////////////////
  30
  31 // --- Standard libraries ---
  32 #include <Riostream.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 // --- ROOT libraries ---
  37 #include <TClonesArray.h>
  38 #include <TGeometry.h>
  39 #include <TLorentzVector.h>
  40 #include <TMath.h>
  41 #include <TNode.h>
  42 #include <TObjectTable.h>
  43 #include <TTUBE.h>
  44 #include <TTUBS.h>
  45 #include <TVirtualMC.h>
  46 #include <TParticle.h>
  47
  48 // --- AliRoot header files ---
  49 #include "AliRun.h"
  50 #include "AliMC.h"
  51 #include "AliConst.h"
  52 #include "AliMagF.h"
  53 #include "AliVZEROLoader.h"
  54 #include "AliVZEROdigit.h"
  55 #include "AliVZEROhit.h"
  56 #include "AliVZEROv4.h"
  57
  58 ClassImp(AliVZEROv4)
  59
  60 //_____________________________________________________________________________
  61 AliVZEROv4:: AliVZEROv4():AliVZERO()
  62 {
  63 // Standard default constructor
  64 }
  65
  66 //_____________________________________________________________________________
  67 AliVZEROv4::AliVZEROv4(const char *name, const char *title):
  68  AliVZERO(name,title)
  69 {
  70
  71 // Standard constructor for V-zero Detector  version 2
  72
  73   Int_t i;
  74
  75   printf("\n");
  76   for(i=0;i<26;i++) printf("*");
  77   printf(" Create VZERO object ");
  78   for(i=0;i<26;i++) printf("*");
  79   printf("\n");
  80
  81   fLightYield              =  93.75; // Light yield in BC408 (93.75 eV per photon)
  82   fLightAttenuation        =   0.05; // Light attenuation in fiber (0.05 per meter)
  83   fnMeters                 =   15.0; // Number of meters of clear fibers to PM
  84   fFibToPhot               =    0.3; // Attenuation at fiber-photocathode interface
  85 }
  86
  87 //_____________________________________________________________________________
  88 void AliVZEROv4::CreateGeometry()
  89 {
  90
  91 // Creates the GEANT geometry of the V-zero Detector  version 3
  92
  93   Int_t i;
  94
  95   printf("\n");
  96   for(i=0;i<26;i++) printf("*");
  97   printf(" Create VZERO Geometry ");
  98   for(i=0;i<26;i++) printf("*");
  99   printf("\n");
 100
 101   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 102
 103   Int_t    ndetR = 1;
 104   Int_t    ndetL = 1;
 105
 106   Int_t    ncellsR = 1;
 107   Int_t    ncellsL = 1;
 108
 109   Int_t    idrotm[999];
 110
 111   Float_t  height1Right, height2Right, height3Right, height4Right;
 112   Float_t  heightRight;
 113   Float_t  theta;
 114
 115   Float_t  halfThickQua;
 116
 117   Float_t  zdet;
 118   Float_t  r0Right, r4Right;
 119   Float_t  pi = TMath::Pi();
 120
 121   height1Right    =     3.42;  // height of cell 1, in cm
 122   height2Right    =     6.78;  // height of cell 2, in cm
 123   height3Right    =     7.11;  // height of cell 3, in cm
 124   height4Right    =    10.91;  // height of cell 4, in cm
 125
 126   theta       = pi/6.0/2.0;       // half angular opening = 15 degrees
 127
 128   halfThickQua= fThickness1/2.0;  // half thickness of elementary cell (inner ring)
 129
 130 // distance 0.6 cm in zdet accounts for the fact V0R box back lid sits 0.6 away from
 131 // absorber nose sitting at 90 cm. Will use -zdet later...
 132 // size of V0R box  (fThickness) is increased by 1 mm as compared to version v2
 133
 134   fThickness  =    fThickness + 0.1;
 135   zdet        =    90.0 - 0.6 - fThickness/2.0;  // distance to vertex (along Z axis)
 136   r0Right     =    4.05;          // closest distance to center of the beam pipe
 137   heightRight =    height1Right + height2Right + height3Right + height4Right;
 138   r4Right     =    r0Right + heightRight;
 139
 140 // Creation of mother volume v0LE - left part - :
 141 // Entrance face at  +350.0 cm  (new coordinate system) ...
 142
 143    Float_t   partube[3];
 144
 145    partube[0] =  4.3;
 146    partube[1] = 45.0;
 147    partube[2] = fThickness1/2.0;
 148
 149    gMC->Gsvolu("V0LE","TUBE",idtmed[3005],partube,3);
 150
 151 // Creation of five rings - left part - :
 152 // Entrance face at +350.0 cm  (new coordinate system) ...
 153
 154 // Mother volume v0L0 in which will be set 5 scintillator cells
 155
 156   Float_t   partubs[5];
 157
 158   Float_t   r0Left      =   4.3;
 159   Float_t   height1Left =   3.6;
 160   Float_t   height2Left =   6.4;
 161   Float_t   height3Left =  14.9;
 162   Float_t   height4Left =  14.4;
 163   Float_t   heightLeft  =   height1Left + height2Left + height3Left + height4Left;
 164
 165   Float_t   r4Left      =   r0Left  + heightLeft;
 166
 167   partubs[0]     =  r0Left;
 168   partubs[1]     =  r4Left;
 169   partubs[2]     =  fThickness1/2.0;
 170   partubs[3]     =  90.0-15.0;
 171   partubs[4]     = 120.0-15.0;
 172
 173   gMC->Gsvolu("V0L0","TUBS",idtmed[3010],partubs,5);  // air volume
 174
 175   Float_t  r1Left =  r0Left + height1Left;
 176
 177   partubs[0]     =  r0Left;
 178   partubs[1]     =  r1Left;
 179
 180   gMC->Gsvolu("V0L1","TUBS",idtmed[3005],partubs,5);  // quartz volume
 181   gMC->Gspos("V0L1",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 182
 183   Float_t  r2Left  =  r1Left + height2Left;
 184
 185   partubs[0]     =  r1Left;
 186   partubs[1]     =  r2Left;
 187
 188   gMC->Gsvolu("V0L2","TUBS",idtmed[3005],partubs,5);  // quartz volume
 189   gMC->Gspos("V0L2",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 190
 191   Float_t  r3Left  =  r2Left + height3Left;
 192
 193   partubs[0]     =  r2Left;
 194   partubs[1]     =  r3Left;
 195
 196   gMC->Gsvolu("V0L3","TUBS",idtmed[3005],partubs,5);  // quartz volume
 197   gMC->Gspos("V0L3",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 198
 199   partubs[0]     =  r3Left;
 200   partubs[1]     =  r4Left;
 201
 202   gMC->Gsvolu("V0L4","TUBS",idtmed[3005],partubs,5);  // quartz volume
 203   gMC->Gspos("V0L4",1,"V0L0", 0.0, 0.0 , 0.0, 0,"ONLY");
 204
 205 // Creation of mother volume v0RI - right part - :
 206
 207   partube[0] = r0Right - 0.2;
 208   partube[1] = r4Right + 1.0;
 209   partube[2] = fThickness/2.0;
 210
 211   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 212
 213 // Creation of  carbon lids (3.5 mm thick) to keep v0RI box shut...
 214
 215   Float_t  lidThickness = 0.35;
 216
 217   partube[0] =   r0Right;
 218   partube[1] =   r4Right;
 219   partube[2] =   +lidThickness/2.0;
 220
 221   gMC->Gsvolu("V0CA","TUBE",idtmed[3001],partube,3);
 222   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-partube[2],0,"ONLY");
 223   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+partube[2],0,"ONLY");
 224
 225 // Creation of aluminum rings to maintain the v0RI pieces ...
 226
 227   partube[0] =   r0Right - 0.2;
 228   partube[1] =   r0Right;
 229   partube[2] =   +fThickness/2.0;
 230
 231   gMC->Gsvolu("V0IR","TUBE",idtmed[3003],partube,3);
 232   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 233
 234   partube[0] =   r4Right;
 235   partube[1] =   r4Right + 1.0;
 236   partube[2] =   +fThickness/2.0;
 237
 238   gMC->Gsvolu("V0ER","TUBE",idtmed[3003],partube,3);
 239   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 240
 241 // Mother volume v0R0 in which will be set 4  scintillator cells
 242
 243   partubs[0]      =  r0Right;
 244   partubs[1]      =  r4Right;
 245   partubs[2]      =  fThickness/2.0;
 246   partubs[3]      =  90.0-15.0;
 247   partubs[4]      = 120.0-15.0;
 248
 249   gMC->Gsvolu("V0R0","TUBS",idtmed[3010],partubs,5);  // air volume
 250
 251 // Elementary cell of ring 1 :
 252 // (cells of ring 1  will be shifted by 1.7 cm towards vertex to output fibers)
 253
 254   Float_t   offsetFibers  =  1.7;
 255   Float_t   offset        =  fThickness/2.0 - lidThickness - fThickness1/2.0;
 256   Float_t   r1Right       =  r0Right + height1Right;
 257
 258   partubs[0]     =  r0Right;
 259   partubs[1]     =  r1Right;
 260   partubs[2]     =  fThickness1/2.0;
 261
 262   gMC->Gsvolu("V0R1","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 263   gMC->Gspos("V0R1",1,"V0R0", 0.0, 0.0 , -offset + offsetFibers, 0,"ONLY");
 264
 265 // Elementary cell of ring 2 :
 266
 267   Float_t   r2Right   =  r1Right + height2Right;
 268
 269   partubs[0]     =  r1Right;
 270   partubs[1]     =  r2Right;
 271
 272   gMC->Gsvolu("V0R2","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 273   gMC->Gspos("V0R2",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 274
 275
 276 // Elementary cell of ring 3 :
 277
 278   Float_t   r3Right   =  r2Right + height3Right;
 279
 280   partubs[0]     =  r2Right;
 281   partubs[1]     =  r3Right;
 282
 283   gMC->Gsvolu("V0R3","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 284   gMC->Gspos("V0R3",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 285
 286 // Elementary cell of ring 4 :
 287
 288   partubs[0]     =  r3Right;
 289   partubs[1]     =  r4Right;
 290
 291   gMC->Gsvolu("V0R4","TUBS",idtmed[3005],partubs,5);  // scintillator volume
 292   gMC->Gspos("V0R4",1,"V0R0", 0.0, 0.0 , -offset, 0,"ONLY");
 293
 294   Float_t  phiDeg = 180./6.;
 295
 296 // Right part :
 297
 298   for(Float_t  phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
 299       {
 300         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 301         gMC->Gspos("V0R0",ndetR,"V0RI",0.0,
 302                           0.0,0.0,idrotm[902],"ONLY");
 303         ndetR++;
 304        }
 305
 306   gMC->Gspos("V0RI",1,"ALIC",0.0,0.0,-zdet,0,"ONLY");
 307
 308   ncellsR = (ndetR - 1) * 4;
 309   printf("    Number of cells on Right side =   %d\n",  ncellsR);
 310
 311 // Left part :
 312
 313   for(Float_t  phi = 15.0 ; phi < 360.0; phi = phi + phiDeg)
 314       {
 315         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 316         gMC->Gspos("V0L0",ndetL,"V0LE",0.0,
 317                           0.0,0.0,idrotm[902],"ONLY");
 318         ndetL++;
 319        }
 320
 321   gMC->Gspos("V0LE",1,"ALIC",0.0,0.0,350.0+fThickness1/2.0,0,"ONLY");
 322
 323   ncellsL = (ndetL - 1) * 4;
 324   printf("    Number of cells on Left side  =   %d\n",  ncellsL);
 325   for(i=0;i<75;i++) printf("*");
 326   printf("\n");
 327
 328 }
 329
 330 //_____________________________________________________________________________
 331 void AliVZEROv4::BuildGeometry()
 332 {
 333
 334 // Builds simple ROOT TNode geometry for event display
 335
 336   Int_t i;
 337
 338   printf("\n");
 339   for(i=0;i<30;i++) printf("*");
 340   printf(" VZERO BuildGeometry ");
 341   for(i=0;i<30;i++) printf("*");
 342   printf("\n");
 343
 344   TNode *top;
 345
 346   TNode *v0Rnode, *v0Rnode0, *v0Rnode6 , *v0Rnode7, *v0Rnode8, *v0Rnode9;
 347   TNode *v0Rnode1, *v0Rnode2, *v0Rnode3, *v0Rnode4;
 348   TNode *v0Lnode, *v0Lnode0;
 349   TNode *v0Lnode1, *v0Lnode2, *v0Lnode3, *v0Lnode4;
 350
 351   const int kColorVZERO  = kGreen;
 352
 353   top = gAlice->GetGeometry()->GetNode("alice");
 354
 355   Float_t  height1Right, height2Right, height3Right, height4Right;
 356   Float_t  heightRight;
 357   Float_t  theta;
 358
 359   Float_t  halfThickQua;
 360   Float_t  zdet;
 361   Float_t  r0Right, r4Right;
 362   Float_t  pi = TMath::Pi();
 363
 364   height1Right      =     3.42;  // height of cell 1, in cm
 365   height2Right      =     6.78;  // height of cell 2, in cm
 366   height3Right      =     7.11;  // height of cell 3, in cm
 367   height4Right      =    10.91;  // height of cell 4, in cm
 368
 369   theta             =    pi/6.0/2.0;
 370
 371   halfThickQua      =    fThickness1/2.0;
 372
 373   zdet              =    90.0 - 0.6 - fThickness/2.0;
 374   r0Right           =    4.05;
 375   heightRight       =    height1Right + height2Right + height3Right + height4Right;
 376   r4Right           =    r0Right + heightRight;
 377
 378   Int_t     ndiv    =     1;
 379
 380   Float_t   partube[3];
 381
 382   partube[0] =  r0Right - 0.2;
 383   partube[1] =  r4Right + 1.0;
 384   partube[2] = fThickness/2.0;
 385
 386   TTUBE *v0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 387
 388   top->cd();
 389
 390   v0Rnode = new TNode("V0RI","V0RI",v0RI,0.0,0.0,-zdet,0);
 391
 392   v0Rnode->SetLineColor(kYellow);
 393   fNodes->Add(v0Rnode);
 394   v0Rnode->SetVisibility(2);
 395
 396 // Rondelles de carbone (epaisseur 3.5 mm) de maintien des cellules ...
 397
 398   Float_t  lidThickness = 0.35;
 399
 400   partube[0] =   r0Right;
 401   partube[1] =   r4Right;
 402   partube[2] =   +lidThickness/2.0;
 403
 404   TTUBE  *v0CA = new TTUBE("V0CA", "V0CA", "void",partube[0], partube[1], partube[2]);
 405
 406   v0Rnode->cd();
 407   v0Rnode6 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0, fThickness/2.0-partube[2],0);
 408   v0Rnode6->SetLineColor(kYellow);
 409   fNodes->Add(v0Rnode6);
 410   v0Rnode->cd();
 411   v0Rnode7 = new TNode("V0CA", "V0CA",v0CA,0.0,0.0,-fThickness/2.0+partube[2],0);
 412   v0Rnode7->SetLineColor(kYellow);
 413   fNodes->Add(v0Rnode7);
 414
 415   partube[0] =   r0Right - 0.2;
 416   partube[1] =   r0Right;
 417   partube[2] =   +fThickness/2.0;
 418
 419   TTUBE *v0IR = new TTUBE("V0IR","V0IR","void", partube[0], partube[1], partube[2]);
 420
 421   v0Rnode->cd();
 422   v0Rnode8 = new TNode("V0IR", "V0IR",v0IR,0.0,0.0,0.0,0);
 423   v0Rnode8->SetLineColor(kYellow);
 424   fNodes->Add(v0Rnode8);
 425
 426   partube[0] =   r4Right;
 427   partube[1] =   r4Right + 1.0;
 428   partube[2] =   +fThickness/2.0;
 429
 430   TTUBE  *v0ER = new TTUBE("V0ER","V0ER","void", partube[0], partube[1], partube[2]);
 431
 432   v0Rnode->cd();
 433   v0Rnode9 = new TNode("V0ER", "V0ER",v0ER,0.0,0.0,0.0,0);
 434   v0Rnode9->SetLineColor(kYellow);
 435   fNodes->Add(v0Rnode9);
 436
 437   Float_t   partubs[5];
 438
 439   partubs[0]      =  r0Right;
 440   partubs[1]      =  r4Right;
 441   partubs[2]      =  fThickness/2.0;
 442   partubs[3]      =  90.0-15.0;
 443   partubs[4]      = 120.0-15.0;
 444
 445   TTUBS  *v0R0 = new TTUBS("V0R0", "V0R0", "void",partubs[0], partubs[1], partubs[2],
 446                                                   partubs[3], partubs[4]);
 447
 448   v0R0->SetNumberOfDivisions(ndiv);
 449
 450   Float_t   r1Right =  r0Right + height1Right;
 451   Float_t   offset  = fThickness/2.0 - lidThickness - fThickness1/2.0;
 452   Float_t   offsetFibers = 1.7;
 453
 454   partubs[0]     =  r0Right;
 455   partubs[1]     =  r1Right;
 456   partubs[2]     =  fThickness1/2.0;
 457
 458   TTUBS *v0R1 = new TTUBS("V0R1", "V0R1", "void", partubs[0], partubs[1], partubs[2],
 459                                                   partubs[3], partubs[4]);
 460
 461   v0R1->SetNumberOfDivisions(ndiv);
 462
 463   Float_t   r2Right  =  r1Right + height2Right;
 464
 465   partubs[0]     =  r1Right;
 466   partubs[1]     =  r2Right;
 467
 468   TTUBS *v0R2 = new TTUBS("V0R2", "V0R2", "void", partubs[0], partubs[1], partubs[2],
 469                                                   partubs[3], partubs[4]);
 470
 471   v0R2->SetNumberOfDivisions(ndiv);
 472
 473   Float_t   r3Right  =  r2Right + height3Right;
 474
 475   partubs[0]     =  r2Right;
 476   partubs[1]     =  r3Right;
 477
 478   TTUBS *v0R3 = new TTUBS("V0R3", "V0R3", "void", partubs[0], partubs[1], partubs[2],
 479                                                   partubs[3], partubs[4]);
 480   v0R3->SetNumberOfDivisions(ndiv);
 481
 482   partubs[0]     =  r3Right;
 483   partubs[1]     =  r4Right;
 484
 485   TTUBS *v0R4 = new TTUBS("V0R4", "V0R4", "void", partubs[0], partubs[1], partubs[2],
 486                                                   partubs[3], partubs[4]);
 487   v0R4->SetNumberOfDivisions(ndiv);
 488
 489   Float_t  phi;
 490   Float_t  phiDeg= 180./6.;
 491
 492   Int_t    ndetR = 1;
 493
 494   char     nameNode[12];
 495
 496   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 497
 498   {
 499     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 500
 501     sprintf(nameNode,"SUBDER%d",ndetR);
 502
 503     v0Rnode->cd();
 504     v0Rnode0 = new TNode(nameNode,nameNode,v0R0,0.0,0.0, 0.0,mat920);
 505     v0Rnode0->SetLineColor(kYellow);
 506     fNodes->Add(v0Rnode0);
 507     ndetR++;
 508
 509     sprintf(nameNode,"SUBDER%d",ndetR);
 510     v0Rnode0->cd();
 511     v0Rnode1 = new TNode(nameNode,nameNode,v0R1,0.0,0.0, -offset+ offsetFibers ,0);
 512     v0Rnode1->SetLineColor(kColorVZERO);
 513     fNodes->Add(v0Rnode1);
 514     ndetR++;
 515
 516     sprintf(nameNode,"SUBDER%d",ndetR);
 517     v0Rnode0->cd();
 518     v0Rnode2 = new TNode(nameNode,nameNode,v0R2,0.0,0.0, -offset,0);
 519     v0Rnode2->SetLineColor(kColorVZERO);
 520     fNodes->Add(v0Rnode2);
 521     ndetR++;
 522
 523     sprintf(nameNode,"SUBDER%d",ndetR);
 524     v0Rnode0->cd();
 525     v0Rnode3 = new TNode(nameNode,nameNode,v0R3,0.0,0.0, -offset,0);
 526     v0Rnode3->SetLineColor(kColorVZERO);
 527     fNodes->Add(v0Rnode3);
 528     ndetR++;
 529
 530     sprintf(nameNode,"SUBDER%d",ndetR);
 531     v0Rnode0->cd();
 532     v0Rnode4 = new TNode(nameNode,nameNode,v0R4,0.0,0.0, -offset,0);
 533     v0Rnode4->SetLineColor(kColorVZERO);
 534     fNodes->Add(v0Rnode4);
 535     ndetR++;
 536
 537     v0Rnode0->SetVisibility(2);
 538   }
 539
 540 // Left side of VZERO :
 541
 542   Float_t   r0Left      =    4.3;
 543   Float_t   height1Left =    3.6;
 544   Float_t   height2Left =    6.4;
 545   Float_t   height3Left =   14.9;
 546   Float_t   height4Left =   14.4;
 547   Float_t   heightLeft  = height1Left + height2Left + height3Left + height4Left;
 548
 549   Float_t   r4Left      = r0Left  + heightLeft;
 550
 551   partube[0] =  r0Left;
 552   partube[1] =  r4Left;
 553   partube[2] =  fThickness1/2.0;
 554
 555   TTUBE *v0LE = new TTUBE("V0LE", "V0LE", "void", partube[0], partube[1], partube[2]);
 556
 557   top->cd();
 558
 559   v0Lnode = new TNode("V0LE","V0LE",v0LE,0.0,0.0,350.0+fThickness1/2.0,0);
 560
 561   v0Lnode->SetLineColor(kBlue);
 562   fNodes->Add(v0Lnode);
 563
 564   v0Lnode->SetVisibility(2);
 565
 566   partubs[0]      =  r0Left;
 567   partubs[1]      =  r4Left;
 568   partubs[2]      =  fThickness1/2.0;
 569   partubs[3]      =  90.0-15.0;
 570   partubs[4]      = 120.0-15.0;
 571
 572   TTUBS *v0L0 = new TTUBS("V0L0", "V0L0", "void", partubs[0], partubs[1], partubs[2],
 573                                                   partubs[3], partubs[4]);
 574
 575   v0L0->SetNumberOfDivisions(ndiv);
 576   v0L0->SetLineColor(7);
 577
 578   Float_t   offsetLeft;
 579   offsetLeft    = - fThickness1/2.0;
 580
 581   Float_t   r1Left =  r0Left + height1Left;
 582
 583   partubs[0]     =  r0Left;
 584   partubs[1]     =  r1Left;
 585
 586   TTUBS *v0L1 = new TTUBS("V0L1", "V0L1", "void", partubs[0], partubs[1], partubs[2],
 587                                                   partubs[3], partubs[4]);
 588   v0L1->SetNumberOfDivisions(ndiv);
 589
 590   Float_t   r2Left =  r1Left + height2Left;
 591
 592   partubs[0]     =  r1Left;
 593   partubs[1]     =  r2Left;
 594
 595   TTUBS *v0L2 = new TTUBS("V0L2", "V0L2", "void", partubs[0], partubs[1], partubs[2],
 596                                                   partubs[3], partubs[4]);
 597   v0L2->SetNumberOfDivisions(ndiv);
 598
 599   Float_t   r3Left =  r2Left + height3Left;
 600
 601   partubs[0]     =  r2Left;
 602   partubs[1]     =  r3Left;
 603
 604   TTUBS *v0L3 = new TTUBS("V0L3", "V0L3", "void", partubs[0], partubs[1], partubs[2],
 605                                                   partubs[3], partubs[4]);
 606   v0L3->SetNumberOfDivisions(ndiv);
 607
 608   partubs[0]     =  r3Left;
 609   partubs[1]     =  r4Left;
 610
 611   TTUBS *v0L4 = new TTUBS("V0L4", "V0L4", "void", partubs[0], partubs[1], partubs[2],
 612                                                   partubs[3], partubs[4]);
 613   v0L4->SetNumberOfDivisions(ndiv);
 614
 615   Int_t    ndetL   = 1;
 616
 617   for (phi = 15.0; phi < 360.0; phi = phi + phiDeg)
 618
 619   {
 620
 621     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 622
 623     sprintf(nameNode,"SUBDEL%d",ndetL);
 624
 625     v0Lnode->cd();
 626     v0Lnode0 = new TNode(nameNode,nameNode,v0L0,0.0,0.0, offsetLeft + halfThickQua,mat920);
 627     v0Lnode0->SetLineColor(kColorVZERO);
 628     fNodes->Add(v0Lnode0);
 629     ndetL++;
 630
 631     sprintf(nameNode,"SUBDEL%d",ndetL);
 632     v0Lnode0->cd();
 633     v0Lnode1 = new TNode(nameNode,nameNode,v0L1,0.0,0.0, 0.0,0);
 634     v0Lnode1->SetLineColor(kColorVZERO);
 635     fNodes->Add(v0Lnode1);
 636     ndetL++;
 637
 638     sprintf(nameNode,"SUBDEL%d",ndetL);
 639     v0Lnode0->cd();
 640     v0Lnode2 = new TNode(nameNode,nameNode,v0L2,0.0,0.0, 0.0,0);
 641     v0Lnode2->SetLineColor(kColorVZERO);
 642     fNodes->Add(v0Lnode2);
 643     ndetL++;
 644
 645     sprintf(nameNode,"SUBDEL%d",ndetL);
 646     v0Lnode0->cd();
 647     v0Lnode3 = new TNode(nameNode,nameNode,v0L3,0.0,0.0, 0.0,0);
 648     v0Lnode3->SetLineColor(kColorVZERO);
 649     fNodes->Add(v0Lnode3);
 650     ndetL++;
 651
 652     sprintf(nameNode,"SUBDEL%d",ndetL);
 653     v0Lnode0->cd();
 654     v0Lnode4 = new TNode(nameNode,nameNode,v0L4,0.0,0.0, 0.0,0);
 655     v0Lnode4->SetLineColor(kColorVZERO);
 656     fNodes->Add(v0Lnode4);
 657     ndetL++;
 658
 659     v0Lnode0->SetVisibility(2);
 660   }
 661 }
 662
 663 //_____________________________________________________________________________
 664 void AliVZEROv4::CreateMaterials()
 665 {
 666
 667 // Creates materials used for geometry
 668
 669     Int_t i;
 670
 671     printf("\n");
 672     for(i=0;i<25;i++) printf("*");
 673     printf(" VZERO create materials ");
 674     for(i=0;i<26;i++) printf("*");
 675     printf("\n");
 676
 677 /*
 678     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,
 679                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 680
 681
 682     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,
 683                                6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
 684
 685     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
 686                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
 687                                  1.662295, 1.68337 };
 688
 689     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
 690                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
 691
 692     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 693
 694
 695     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 696
 697
 698     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,
 699                                1e-4,1e-4,1e-4,1e-4 };
 700     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
 701
 702 */
 703
 704     Int_t *idtmed = fIdtmed->GetArray()-2999;
 705
 706
 707 //  Parameters related to Quarz (SiO2) :
 708
 709     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
 710     Int_t nlmatqua;
 711
 712     aqua[0]    = 28.09;
 713     aqua[1]    = 16.;
 714     zqua[0]    = 14.;
 715     zqua[1]    = 8.;
 716     densqua    = 2.64;
 717     nlmatqua   = -2;
 718     wmatqua[0] = 1.;
 719     wmatqua[1] = 2.;
 720
 721 // Parameters  related to aluminum sheets :
 722
 723     Float_t  aal   = 26.98;
 724     Float_t  zal   = 13.00;
 725     Float_t  densal=   2.7;
 726     Float_t  radlal=   8.9;
 727
 728 // Parameters  related to scintillator CH :
 729
 730     Float_t ascin[2] = {1.00794,12.011};
 731     Float_t zscin[2] = {1.,6.};
 732     Float_t wscin[2] = {1.,1.};
 733     Float_t denscin  = 1.032;
 734
 735 // AIR
 736
 737     Float_t aAir[4]={12.,14.,16.,36.};
 738     Float_t zAir[4]={6.,7.,8.,18.};
 739     Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
 740     Float_t dAir = 1.20479E-3;
 741
 742 //  Definition of materials :
 743
 744 // AIR
 745
 746     AliMixture( 1, "AIR A$", aAir,zAir,dAir,4,wAir);
 747     AliMixture(11, "AIR I$", aAir,zAir,dAir,4,wAir);
 748     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9, 0, 0);
 749     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 750     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2, 0, 0);
 751     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0, 0, 0);
 752
 753     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
 754
 755
 756     Int_t   iSXFLD = gAlice->Field()->Integ();
 757     Float_t sXMGMX = gAlice->Field()->Max();
 758
 759     Float_t tmaxfd, stemax, deemax, epsil, stmin;
 760
 761     tmaxfd = 10.;
 762     stemax = 0.1;
 763     deemax = 0.1;
 764     epsil  = 0.001;
 765     stmin  = 0.001;
 766
 767 //  Active Air :
 768     AliMedium(1, "ACTIVE AIR$", 1, 1, iSXFLD, sXMGMX,
 769               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 770
 771 //  Inactive air :
 772
 773     AliMedium(11, "INACTIVE AIR$", 11, 0, iSXFLD, sXMGMX,
 774               10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
 775
 776     AliMedium(2, "CARBON$ ", 2,  1, iSXFLD, sXMGMX,
 777               tmaxfd, stemax, deemax, epsil, stmin, 0, 0);
 778
 779     AliMedium(3, "QUARZ$", 3, 1, iSXFLD, sXMGMX,
 780               tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin, 0, 0);
 781
 782     AliMedium(4,"ALUMINUM1$",4, 1, iSXFLD, sXMGMX,
 783               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 784
 785
 786     AliMedium(5,"ALUMINUM2$",5, 1, iSXFLD, sXMGMX,
 787               tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin, 0, 0);
 788
 789     AliMedium(6,"SCINTILLATOR$",6, 1, iSXFLD, sXMGMX, 10.0, 0.1, 0.1, 0.003, 0.003, 0, 0);
 790
 791     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
 792     gMC->Gstpar(idtmed[3000], "HADR", 1.);
 793     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
 794     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
 795
 796     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
 797     gMC->Gstpar(idtmed[3001], "HADR", 1.);
 798     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
 799     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
 800
 801     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
 802     gMC->Gstpar(idtmed[3002], "HADR", 1.);
 803     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
 804     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
 805     gMC->Gstpar(idtmed[3002], "CUTGAM",0.5E-4) ;
 806     gMC->Gstpar(idtmed[3002], "CUTELE",1.0E-4) ;
 807
 808     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
 809     gMC->Gstpar(idtmed[3003], "HADR", 1.);
 810     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
 811     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
 812
 813     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
 814     gMC->Gstpar(idtmed[3004], "HADR", 1.);
 815     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
 816     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
 817     gMC->Gstpar(idtmed[3004], "CUTGAM",0.5E-4) ;
 818     gMC->Gstpar(idtmed[3004], "CUTELE",1.0E-4) ;
 819
 820     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
 821     gMC->Gstpar(idtmed[3005], "HADR", 1.);
 822     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
 823     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
 824     gMC->Gstpar(idtmed[3005], "CUTGAM",0.5E-4) ;
 825     gMC->Gstpar(idtmed[3005], "CUTELE",1.0E-4) ;
 826
 827
 828 //    geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 829 //    geant3->Gsckov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 830
 831 //    gMC->SetCerenkov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
 832 //    gMC->SetCerenkov(idtmed[3004], 14, ppckov_alu, absco_alu, effic_alu, rindex_alu);
 833
 834 }
 835
 836 //_____________________________________________________________________________
 837 void AliVZEROv4::DrawModule()
 838 {
 839
 840 //  Drawing is done in DrawVZERO.C
 841
 842    Int_t i;
 843
 844    printf("\n");
 845    for(i=0;i<30;i++) printf("*");
 846    printf(" VZERO DrawModule ");
 847    for(i=0;i<30;i++) printf("*");
 848    printf("\n");
 849 }
 850
 851 //_____________________________________________________________________________
 852 void AliVZEROv4::Init()
 853 {
 854 // Initialises version 2 of the VZERO Detector
 855 // Just prints an information message
 856
 857    printf(" VZERO version %d initialized \n",IsVersion());
 858
 859 //   gMC->SetMaxStep(fMaxStepAlu);
 860 //   gMC->SetMaxStep(fMaxStepQua);
 861
 862     AliVZERO::Init();
 863 }
 864
 865 //_____________________________________________________________________________
 866 void AliVZEROv4::StepManager()
 867 {
 868
 869 // Step Manager, called at each step
 870
 871      Int_t     copy;
 872      static    Int_t   vol[4];
 873      static    Float_t hits[21];
 874      static    Float_t eloss, tlength;
 875      static    Int_t   nPhotonsInStep;
 876      static    Int_t   nPhotons;
 877      static    Int_t   numStep;
 878      Float_t   ringNumber;
 879      Float_t   destep, step;
 880
 881      numStep += 1;
 882
 883 //   We keep only charged tracks :
 884
 885      if ( !gMC->TrackCharge() || !gMC->IsTrackAlive() ) return;
 886
 887      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
 888      vol[2]    = gMC->CurrentVolID(copy);
 889      vol[3]    = copy;
 890
 891      static Int_t idV0R1 = gMC->VolId("V0R1");
 892      static Int_t idV0L1 = gMC->VolId("V0L1");
 893      static Int_t idV0R2 = gMC->VolId("V0R2");
 894      static Int_t idV0L2 = gMC->VolId("V0L2");
 895      static Int_t idV0R3 = gMC->VolId("V0R3");
 896      static Int_t idV0L3 = gMC->VolId("V0L3");
 897      static Int_t idV0R4 = gMC->VolId("V0R4");
 898      static Int_t idV0L4 = gMC->VolId("V0L4");
 899
 900      if      ( gMC->CurrentVolID(copy) == idV0R1 ||
 901                gMC->CurrentVolID(copy) == idV0L1 )
 902                ringNumber = 1.0;
 903      else if ( gMC->CurrentVolID(copy) == idV0R2 ||
 904                gMC->CurrentVolID(copy) == idV0L2 )
 905                ringNumber = 2.0;
 906      else if ( gMC->CurrentVolID(copy) == idV0R3 ||
 907                gMC->CurrentVolID(copy) == idV0L3 )
 908                ringNumber = 3.0;
 909      else if ( gMC->CurrentVolID(copy) == idV0R4 ||
 910                gMC->CurrentVolID(copy) == idV0L4 )
 911                ringNumber = 4.0;
 912      else
 913                ringNumber = 0.0;
 914
 915      if  (  ringNumber > 0.5  ) {
 916
 917         destep    = gMC->Edep();
 918         step      = gMC->TrackStep();
 919
 920         nPhotonsInStep  = Int_t(destep / (fLightYield *1e-9) );
 921         nPhotonsInStep  = gRandom->Poisson(nPhotonsInStep);
 922
 923         eloss    += destep;
 924         tlength  += step;
 925
 926         if  ( gMC->IsTrackEntering()  )  {
 927
 928             nPhotons  =  nPhotonsInStep;
 929             gMC->TrackPosition(fTrackPosition);
 930             gMC->TrackMomentum(fTrackMomentum);
 931
 932             Float_t pt  = TMath::Sqrt( fTrackMomentum.Px() * fTrackMomentum.Px() +
 933                                        fTrackMomentum.Py() * fTrackMomentum.Py() );
 934
 935             hits[0]  = fTrackPosition.X();
 936             hits[1]  = fTrackPosition.Y();
 937             hits[2]  = fTrackPosition.Z();
 938             hits[3]  = Float_t (gMC->TrackPid());
 939
 940             hits[4]  = gMC->TrackTime();
 941             hits[5]  = gMC->TrackCharge();
 942             hits[6]  = fTrackMomentum.Theta()*TMath::RadToDeg();
 943             hits[7]  = fTrackMomentum.Phi()*TMath::RadToDeg();
 944             hits[8]  = ringNumber;
 945
 946             hits[9]  = pt;
 947             hits[10] = fTrackMomentum.P();
 948             hits[11] = fTrackMomentum.Px();
 949             hits[12] = fTrackMomentum.Py();
 950             hits[13] = fTrackMomentum.Pz();
 951
 952             TParticle *par = gAlice->GetMCApp()->Particle(gAlice->GetMCApp()->GetCurrentTrackNumber());
 953             hits[14] = par->Vx();
 954             hits[15] = par->Vy();
 955             hits[16] = par->Vz();
 956
 957             tlength  = 0.0;
 958             eloss    = 0.0;
 959          }
 960
 961          nPhotons  = nPhotons + nPhotonsInStep;
 962
 963          if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
 964
 965          nPhotons  = nPhotons - Int_t((Float_t(nPhotons) * fLightAttenuation * fnMeters));
 966          nPhotons  = nPhotons - Int_t( Float_t(nPhotons) * fFibToPhot);
 967
 968          hits[17] =   eloss;
 969          hits[18] = tlength;
 970          hits[19] = nPhotons;
 971          hits[20] = GetCellId (vol, hits);
 972
 973          AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
 974
 975          tlength         = 0.0;
 976          eloss           = 0.0;
 977          nPhotons        =   0;
 978          nPhotonsInStep  =   0;
 979
 980          numStep         =   0;
 981          }
 982     }
 983
 984 }
 985
 986 //_____________________________________________________________________________
 987 void AliVZEROv4::AddHit(Int_t track, Int_t *vol, Float_t *hits)
 988 {
 989
 990 //  Adds a VZERO hit
 991
 992   TClonesArray &lhits = *fHits;
 993   new(lhits[fNhits++]) AliVZEROhit(fIshunt,track,vol,hits);
 994 }
 995
 996 //_____________________________________________________________________________
 997 void AliVZEROv4::AddDigits(Int_t *tracks, Int_t* digits)
 998 {
 999
1000 //  Adds a VZERO digit
1001
1002    TClonesArray  &ldigits = *fDigits;
1003    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1004 }
1005
1006 //_____________________________________________________________________________
1007 void AliVZEROv4::MakeBranch(Option_t *option)
1008 {
1009
1010 // Creates new branches in the current Root Tree
1011
1012   char branchname[10];
1013   sprintf(branchname,"%s",GetName());
1014   printf(" fBufferSize = %d \n",fBufferSize);
1015
1016   const char *cH = strstr(option,"H");
1017
1018   if (fHits   && TreeH() && cH) {
1019     TreeH()->Branch(branchname,&fHits, fBufferSize);
1020     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1021   }
1022
1023   const char *cD = strstr(option,"D");
1024
1025   if (fDigits   && fLoader->TreeD() && cD) {
1026     fLoader->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1027     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1028   }
1029
1030 }
1031
1032 //_____________________________________________________________________________
1033 Int_t AliVZEROv4::GetCellId(Int_t *vol, Float_t *hits)
1034 {
1035
1036   //   Returns Id of scintillator cell
1037   //   Right side from  0 to 47
1038   //   Left  side from 48 to 95
1039
1040    Int_t index = vol[1];
1041    fCellId     = 0;
1042
1043    if (index < 10) index = index + 12;
1044
1045    if (hits[2] < 0.0) {
1046       index = (index - 10) + ( ( Int_t(hits[8]) - 1 ) * 12);
1047       fCellId   = index;
1048    }
1049    else if (hits[2] > 0.0)
1050    {
1051       index = (index + 38) + ( ( Int_t(hits[8]) - 1 ) * 12);
1052       fCellId   = index;}
1053
1054    return fCellId;
1055 }