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
  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 //                                                                  //
  24 //////////////////////////////////////////////////////////////////////
  25
  26 #include <TMath.h>
  27 #include <TGeometry.h>
  28 #include <TTRD2.h>
  29 #include <TCONE.h>
  30 #include <TPGON.h>
  31 #include <TPCON.h>
  32 #include <TSPHE.h>
  33 #include <TTRAP.h>
  34 #include <TBRIK.h>
  35 #include <TBox.h>
  36
  37 #include <TShape.h>
  38 #include <TNode.h>
  39 #include <TClonesArray.h>
  40 #include <TH1.h>
  41 #include <string.h>
  42 #include <iostream.h>
  43
  44 #include "AliVZEROv0.h"
  45 #include "AliRun.h"
  46 #include "AliMC.h"
  47 #include "AliVZEROhit.h"
  48 #include "AliVZEROdigit.h"
  49 #include <iostream.h>
  50 #include <fstream.h>
  51
  52 #include <TGeant3.h>
  53 #include <stdlib.h>
  54 #include "TObjectTable.h"
  55
  56 #include "AliConst.h"
  57 #include "ABSOSHILConst.h"
  58 #include "ABSOConst.h"
  59
  60 ClassImp(AliVZEROv0)
  61
  62 //--------------------------------------------------------------------
  63 AliVZEROv0:: AliVZEROv0():AliVZERO()
  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<35;i++) printf("*");
  78   printf(" create VZERO object");
  79   for(i=0;i<35;i++) printf("*");
  80   printf("\n");
  81
  82 }
  83 //-------------------------------------------------------------------------
  84 void AliVZEROv0::CreateGeometry()
  85 {
  86
  87 // Creates the Geant geometry of the V-zeroR Detector (right part) version 0
  88
  89
  90   Int_t i;
  91
  92   printf("\n");
  93   for(i=0;i<35;i++) printf("*");
  94   printf(" VZERO Create Geometry ");
  95   for(i=0;i<35;i++) printf("*");
  96   printf("\n");
  97
  98
  99   Int_t    *idtmed = fIdtmed->GetArray()-2999;
 100
 101   Int_t    n_detec = 1;
 102   Int_t    n_cells = 1;
 103
 104   Int_t    idrotm[999];
 105
 106   Float_t  height1, height2, height3, height4, height5;
 107   Float_t  height;
 108   Float_t  theta;
 109   Float_t  half_thick_alu;
 110   Float_t  half_thick_qua1,half_thick_qua2,half_thick_qua3;
 111   Float_t  half_thick_qua4,half_thick_qua5;
 112   Float_t  zdet;
 113   Float_t  r0, r5;
 114   Float_t  pi = TMath::Pi();
 115   Float_t  thick_alu;
 116
 117   height1           =     2.3;           // height of cell 1, in cm
 118   height2           =     3.7;           // height of cell 2, in cm
 119   height3           =     6.2;           // height of cell 3, in cm
 120   height4           =    10.5;           // height of cell 4, in cm
 121   height5           =    10.5;           // height of cell 5, in cm
 122
 123   theta             = pi/12.0/2.0;       // half angular opening = 7.5 degrees
 124   half_thick_alu    = 0.0025;            // half thickness of aluminum foil, in cm
 125   thick_alu         = 2.0 * half_thick_alu;
 126   half_thick_qua1   = fThickness1/2.0;   // half thickness of WRAPPED quartz cell (inner ring)
 127   half_thick_qua2   = half_thick_qua1  - 0.25;
 128   half_thick_qua3   = half_thick_qua2  - 0.25;
 129   half_thick_qua4   = half_thick_qua3  - 0.25;
 130   half_thick_qua5   = half_thick_qua4  - 0.25;
 131
 132   zdet              =    86.9 +fThickness/2.0;  // distance to vertex (along Z axis)
 133   r0                =    3.4;            // closest distance to center of the beam pipe
 134   height            =    height1 + height2 + height3 + height4 + height5;
 135   r5                =    r0 + height;
 136
 137
 138 // Creation of mother volume V0RI :
 139
 140   Float_t   partube[3];
 141
 142   partube[0] = r0 - 0.2;
 143   partube[1] = (r5 + 1.0) / TMath::Cos(theta);
 144   partube[2] = fThickness/2.0;
 145
 146
 147   gMC->Gsvolu("V0RI","TUBE",idtmed[3010],partube,3);
 148
 149 // Creation of  carbon lids (1 mm thick) to keep V0RI box shut...
 150
 151   Float_t   parbox[10];
 152
 153   parbox[0] =    0.;
 154   parbox[1] =  360.;
 155   parbox[2] =    24;
 156   parbox[3] =     2;
 157   parbox[4] =  -0.1/2.0;
 158   parbox[5] =  r0;
 159   parbox[6] =  r5;
 160   parbox[7] =  +0.1/2.0;
 161   parbox[8] =  r0;
 162   parbox[9] =  r5;
 163
 164
 165   gMC->Gsvolu("V0CA","PGON",idtmed[3001],parbox,10);
 166   gMC->Gspos("V0CA",1,"V0RI",0.0,0.0, fThickness/2.0-parbox[7],0,"ONLY");
 167   gMC->Gspos("V0CA",2,"V0RI",0.0,0.0,-fThickness/2.0+parbox[7],0,"ONLY");
 168
 169 // Creation of aluminum rings to maintain the V0RI pieces ...
 170
 171   parbox[4] =  -fThickness/2.0;
 172   parbox[5] =  r0 -0.2;
 173   parbox[6] =  r0;
 174   parbox[7] =  +fThickness/2.0;
 175   parbox[8] =  r0 -0.2;
 176   parbox[9] =  r0;
 177
 178   gMC->Gsvolu("V0IR","PGON",idtmed[3003],parbox,10);
 179   gMC->Gspos("V0IR",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 180
 181   parbox[4] =  -fThickness/2.0;
 182   parbox[5] =  r5;
 183   parbox[6] =  r5 + 1.0;
 184   parbox[7] =  +fThickness/2.0;
 185   parbox[8] =  r5;
 186   parbox[9] =  r5 + 1.0;
 187
 188   gMC->Gsvolu("V0ER","PGON",idtmed[3003],parbox,10);
 189   gMC->Gspos("V0ER",1,"V0RI",0.0,0.0,0.0,0,"ONLY");
 190
 191 // Mother volume V0R0 in which will be set 5  quartz cells
 192 // each one  WRAPPED in reflecting aluminum :
 193
 194   Float_t   dist0;
 195   Float_t   par[11];
 196
 197   dist0     =  r0 + height / 2.0;
 198   thick_alu =  2.0*half_thick_alu;
 199
 200   par[0]    =  half_thick_qua1;
 201   par[1]    =  0.0;
 202   par[2]    =  0.0;
 203   par[3]    =  height / 2.0 ;
 204   par[4]    =  TMath::Tan(theta) * r0;
 205   par[5]    =  TMath::Tan(theta) * r5;
 206   par[6]    =  0.0;
 207   par[7]    =  height / 2.0 ;
 208   par[8]    =  TMath::Tan(theta) * r0;
 209   par[9]    =  TMath::Tan(theta) * r5;
 210   par[10]   =  0.0;
 211
 212
 213   gMC->Gsvolu("V0R0","TRAP",idtmed[3010],par,11);  // air volume
 214
 215 // Elementary cell of ring 1 :
 216
 217   Float_t   dist1;
 218   Float_t   r1;
 219   Float_t   offset;
 220
 221   dist1     =  (- height + height1) /2.0;
 222   r1        =  r0 + height1;
 223   offset    = - fThickness/2.0 + 0.1;
 224
 225   par[0]    =  half_thick_qua1 - thick_alu;
 226   par[3]    =  height1 / 2.0 - thick_alu;
 227   par[4]    =  TMath::Tan(theta) * r0 - thick_alu;
 228   par[5]    =  TMath::Tan(theta) * r1- thick_alu;
 229   par[7]    =  height1 / 2.0 - thick_alu;
 230   par[8]    =  TMath::Tan(theta) * r0 - thick_alu;
 231   par[9]    =  TMath::Tan(theta) * r1 - thick_alu;
 232
 233
 234   gMC->Gsvolu("V0R1","TRAP",idtmed[3002],par,11);  // quartz volume
 235   gMC->Gspos("V0R1",1,"V0R0", 0.0, dist1 , 0.0, 0,"ONLY");
 236
 237   par[0]    =  half_thick_alu;
 238
 239   gMC->Gsvolu("V0A1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 240   gMC->Gspos("V0A1",1,"V0R1",0.0,0.0, - half_thick_qua1 + half_thick_alu,0,"ONLY");
 241   gMC->Gspos("V0A1",2,"V0R1",0.0,0.0, + half_thick_qua1 - half_thick_alu,0,"ONLY");
 242
 243   parbox[0] = half_thick_alu;
 244   parbox[1] = height1 / TMath::Cos(theta)/ 2.0;
 245   parbox[2] = half_thick_qua1;
 246
 247   gMC->Gsvolu("V0A2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 248   Float_t  theta_deg = 180./12./2.0;
 249   Float_t h1;
 250   h1 = TMath::Tan(theta) * (r0 + height1/2.0);
 251   AliMatrix(idrotm[911],90.0,+theta_deg,90.0,90.+theta_deg,0.0,0.);
 252   gMC->Gspos("V0A2",1,"V0R1",-h1 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 253   AliMatrix(idrotm[912],90.0,-theta_deg,90.0,90.-theta_deg,0.0,0.);
 254   gMC->Gspos("V0A2",2,"V0R1",+h1 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 255
 256   parbox[0] = TMath::Tan(theta) * r0;
 257   parbox[1] = half_thick_alu;
 258   parbox[2] = half_thick_qua1;
 259   gMC->Gsvolu("V0A3","BOX",idtmed[3004],parbox,3);
 260   gMC->Gspos("V0A3",1,"V0R1",0.0, - (height1/2.0) + half_thick_alu ,0.0,0,"ONLY");
 261
 262
 263   parbox[0] = TMath::Tan(theta) * (r0 + height1);
 264   parbox[1] = half_thick_alu;
 265   parbox[2] = half_thick_qua1;
 266   gMC->Gsvolu("V0A4","BOX",idtmed[3004],parbox,3);
 267   gMC->Gspos("V0A4",1,"V0R1",0.0, (height1/2.0) - half_thick_alu,0.0,0,"ONLY");
 268
 269
 270 //  Elementary cell of ring 2 :
 271
 272   Float_t   dist2;
 273   Float_t   r2;
 274
 275   dist2     =    (- height + height2) /2.0 + height1;
 276   r2        =       r1 + height2;
 277
 278   par[0]    =  half_thick_qua2 - thick_alu;
 279   par[3]    =  height2 / 2.0 - thick_alu;
 280   par[4]    =  TMath::Tan(theta) * r1 - thick_alu;
 281   par[5]    =  TMath::Tan(theta) * r2 - thick_alu;
 282   par[7]    =  height2 / 2.0 - thick_alu;
 283   par[8]    =  TMath::Tan(theta) * r1 - thick_alu;
 284   par[9]    =  TMath::Tan(theta) * r2 - thick_alu;
 285
 286   gMC->Gsvolu("V0R2","TRAP",idtmed[3002],par,11);  // quartz volume
 287   gMC->Gspos("V0R2",1,"V0R0", 0.0, dist2 , - half_thick_qua1 + half_thick_qua2, 0,"ONLY");
 288
 289   par[0]    =  half_thick_alu;
 290
 291   gMC->Gsvolu("V0B1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 292   gMC->Gspos("V0B1",1,"V0R2",0.0,0.0, - half_thick_qua2 + half_thick_alu,0,"ONLY");
 293   gMC->Gspos("V0B1",2,"V0R2",0.0,0.0, + half_thick_qua2 - half_thick_alu,0,"ONLY");
 294
 295   parbox[0] = half_thick_alu;
 296   parbox[1] = height2 / TMath::Cos(theta)/ 2.0;
 297   parbox[2] = half_thick_qua2;
 298
 299   gMC->Gsvolu("V0B2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 300   Float_t h2;
 301   h2 = TMath::Tan(theta) * (r0  + height1 + height2/2.0);
 302   gMC->Gspos("V0B2",1,"V0R2",-h2 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 303   gMC->Gspos("V0B2",2,"V0R2",+h2 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 304
 305   parbox[0] = TMath::Tan(theta) * (r0 + height1);
 306   parbox[1] = half_thick_alu;
 307   parbox[2] = half_thick_qua2;
 308   gMC->Gsvolu("V0B3","BOX",idtmed[3004],parbox,3);
 309   gMC->Gspos("V0B3",1,"V0R2",0.0, - (height2/2.0) + half_thick_alu ,0.0,0,"ONLY");
 310
 311
 312   parbox[0] = TMath::Tan(theta) * (r0 + height1 +  height2);
 313   parbox[1] = half_thick_alu;
 314   parbox[2] = half_thick_qua2;
 315   gMC->Gsvolu("V0B4","BOX",idtmed[3004],parbox,3);
 316   gMC->Gspos("V0B4",1,"V0R2",0.0, (height2/2.0) - half_thick_alu,0.0,0,"ONLY");
 317
 318
 319 // Elementary cell  ring 3 :
 320
 321   Float_t   dist3;
 322   Float_t   r3;
 323
 324   dist3     =    (- height + height3) /2.0 + height1 + height2;
 325   r3        =       r2 + height3;
 326
 327   par[0]    =  half_thick_qua3 - thick_alu;
 328   par[3]    =  height3 / 2.0 - thick_alu;
 329   par[4]    =  TMath::Tan(theta) * r2 - thick_alu;
 330   par[5]    =  TMath::Tan(theta) * r3 - thick_alu;
 331   par[7]    =  height3 / 2.0 - thick_alu;
 332   par[8]    =  TMath::Tan(theta) * r2 - thick_alu;
 333   par[9]    =  TMath::Tan(theta) * r3 - thick_alu;
 334
 335   gMC->Gsvolu("V0R3","TRAP",idtmed[3002],par,11);  // quartz volume
 336   gMC->Gspos("V0R3",1,"V0R0", 0.0, dist3 , - half_thick_qua1 +  half_thick_qua3, 0,"ONLY");
 337
 338
 339   par[0]    =  half_thick_alu;
 340
 341   gMC->Gsvolu("V0C1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 342   gMC->Gspos("V0C1",1,"V0R3",0.0,0.0, - half_thick_qua3 + half_thick_alu,0,"ONLY");
 343   gMC->Gspos("V0C1",2,"V0R3",0.0,0.0, + half_thick_qua3 - half_thick_alu,0,"ONLY");
 344
 345   parbox[0] = half_thick_alu;
 346   parbox[1] = height3 / TMath::Cos(theta)/ 2.0;
 347   parbox[2] = half_thick_qua3;
 348
 349   gMC->Gsvolu("V0C2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 350   Float_t h3;
 351   h3 = TMath::Tan(theta) * (r0  + height1 + height2 + height3/2.0);
 352   gMC->Gspos("V0C2",1,"V0R3",-h3 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 353   gMC->Gspos("V0C2",2,"V0R3",+h3 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 354
 355   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2);
 356   parbox[1] = half_thick_alu;
 357   parbox[2] = half_thick_qua3;
 358   gMC->Gsvolu("V0C3","BOX",idtmed[3004],parbox,3);
 359   gMC->Gspos("V0C3",1,"V0R3",0.0, - (height3/2.0) + half_thick_alu ,0.0,0,"ONLY");
 360
 361
 362   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
 363   parbox[1] = half_thick_alu;
 364   parbox[2] = half_thick_qua3;
 365   gMC->Gsvolu("V0C4","BOX",idtmed[3004],parbox,3);
 366   gMC->Gspos("V0C4",1,"V0R3",0.0, (height3/2.0) - half_thick_alu,0.0,0,"ONLY");
 367
 368
 369 // Elementary cell  ring 4 :
 370
 371   Float_t   dist4;
 372   Float_t   r4;
 373
 374   dist4     =    (- height + height4) /2.0 + height1 + height2 + height3;
 375   r4        =       r3 + height4;
 376
 377   par[0]    =  half_thick_qua4 - thick_alu;
 378   par[3]    =  height4 / 2.0 - thick_alu;
 379   par[4]    =  TMath::Tan(theta) * r3 - thick_alu;
 380   par[5]    =  TMath::Tan(theta) * r4 - thick_alu;
 381   par[7]    =  height4 / 2.0 - thick_alu;
 382   par[8]    =  TMath::Tan(theta) * r3 - thick_alu;
 383   par[9]    =  TMath::Tan(theta) * r4 - thick_alu;
 384
 385   gMC->Gsvolu("V0R4","TRAP",idtmed[3002],par,11);  // quartz volume
 386   gMC->Gspos("V0R4",1,"V0R0", 0.0, dist4 , - half_thick_qua1 + half_thick_qua4, 0,"ONLY");
 387
 388
 389   par[0]    =  half_thick_alu;
 390
 391   gMC->Gsvolu("V0D1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 392   gMC->Gspos("V0D1",1,"V0R4",0.0,0.0, - half_thick_qua4 + half_thick_alu,0,"ONLY");
 393   gMC->Gspos("V0D1",2,"V0R4",0.0,0.0, + half_thick_qua4 - half_thick_alu,0,"ONLY");
 394
 395   parbox[0] = half_thick_alu;
 396   parbox[1] = height4 / TMath::Cos(theta)/ 2.0;
 397   parbox[2] = half_thick_qua4;
 398
 399   gMC->Gsvolu("V0D2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 400   Float_t h4;
 401   h4 = TMath::Tan(theta) * (r0  + height1 + height2 + height3 + height4/2.0);
 402   gMC->Gspos("V0D2",1,"V0R4",-h4 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 403   gMC->Gspos("V0D2",2,"V0R4",+h4 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 404
 405   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3);
 406   parbox[1] = half_thick_alu;
 407   parbox[2] = half_thick_qua4;
 408   gMC->Gsvolu("V0D3","BOX",idtmed[3004],parbox,3);
 409   gMC->Gspos("V0D3",1,"V0R4",0.0, - (height4/2.0) + half_thick_alu ,0.0,0,"ONLY");
 410
 411
 412   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
 413   parbox[1] = half_thick_alu;
 414   parbox[2] = half_thick_qua4;
 415   gMC->Gsvolu("V0D4","BOX",idtmed[3004],parbox,3);
 416   gMC->Gspos("V0D4",1,"V0R4",0.0, (height4/2.0) - half_thick_alu,0.0,0,"ONLY");
 417
 418
 419 // Elementary cell  ring 5 :
 420
 421   Float_t   dist5;
 422
 423   dist5     =    (- height + height5) /2.0 + height1 + height2 + height3 + height4;
 424
 425   par[0]    =  half_thick_qua5 - thick_alu;
 426   par[3]    =  height5 / 2.0 - thick_alu;
 427   par[4]    =  TMath::Tan(theta) * r4 - thick_alu;
 428   par[5]    =  TMath::Tan(theta) * r5 - thick_alu;
 429   par[7]    =  height5 / 2.0 - thick_alu;
 430   par[8]    =  TMath::Tan(theta) * r4 - thick_alu;
 431   par[9]    =  TMath::Tan(theta) * r5 - thick_alu;
 432
 433   gMC->Gsvolu("V0R5","TRAP",idtmed[3002],par,11);  // quartz volume
 434   gMC->Gspos("V0R5",1,"V0R0", 0.0, dist5 , - half_thick_qua1 +  half_thick_qua5, 0,"ONLY");
 435
 436
 437   par[0]    =  half_thick_alu;
 438
 439   gMC->Gsvolu("V0E1","TRAP",idtmed[3004],par,11);  // aluminum trap-shaped foil
 440   gMC->Gspos("V0E1",1,"V0R5",0.0,0.0, - half_thick_qua5 + half_thick_alu,0,"ONLY");
 441   gMC->Gspos("V0E1",2,"V0R5",0.0,0.0, + half_thick_qua5 - half_thick_alu,0,"ONLY");
 442
 443   parbox[0] = half_thick_alu;
 444   parbox[1] = height5 / TMath::Cos(theta)/ 2.0;
 445   parbox[2] = half_thick_qua5;
 446
 447   gMC->Gsvolu("V0E2","BOX",idtmed[3004],parbox,3);   // aluminum rectangular foil
 448   Float_t h5;
 449   h5 = TMath::Tan(theta) * (r0  + height1 + height2 + height3 + height4 + height5/2.0);
 450   gMC->Gspos("V0E2",1,"V0R5",-h5 + half_thick_alu,0.0,0.0,idrotm[911],"ONLY");
 451   gMC->Gspos("V0E2",2,"V0R5",+h5 - half_thick_alu,0.0,0.0,idrotm[912],"ONLY");
 452
 453   parbox[0] = TMath::Tan(theta) * (r0 + height1 + height2 + height3 + height4);
 454   parbox[1] = half_thick_alu;
 455   parbox[2] = half_thick_qua5;
 456   gMC->Gsvolu("V0E3","BOX",idtmed[3004],parbox,3);
 457   gMC->Gspos("V0E3",1,"V0R5",0.0, - (height5/2.0) + half_thick_alu ,0.0,0,"ONLY");
 458
 459
 460   parbox[0] = TMath::Tan(theta) * r5;
 461   parbox[1] = half_thick_alu;
 462   parbox[2] = half_thick_qua5;
 463   gMC->Gsvolu("V0E4","BOX",idtmed[3004],parbox,3);
 464   gMC->Gspos("V0E4",1,"V0R5",0.0, (height5/2.0) - half_thick_alu,0.0,0,"ONLY");
 465
 466
 467   Float_t  phi_rad ;
 468   Float_t  phi_deg = 180./12.;
 469
 470
 471   for(Float_t  phi = 7.5; phi < 360.0; phi = phi + phi_deg)
 472       {
 473         phi_rad = phi*pi/180.;
 474         AliMatrix(idrotm[902], 90.0, phi, 90.0, 90.0 +phi, 0.0 , 0.0);
 475         gMC->Gspos("V0R0",n_detec,"V0RI",-dist0*TMath::Sin(phi_rad),
 476                           dist0*TMath::Cos(phi_rad),offset + half_thick_qua1,idrotm[902],"ONLY");
 477         n_detec++;
 478        }
 479
 480
 481   gMC->Gspos("V0RI",1,"alic",0.0,0.0,zdet,0,"ONLY");
 482
 483   n_cells = (n_detec - 1) * 5;
 484   printf(" \n\n\n");
 485   printf(" Number of cells =   %d\n\n",  n_cells);
 486
 487 }
 488
 489
 490 //_____________________________________________________________________________
 491 void AliVZEROv0::BuildGeometry()
 492 {
 493
 494   // Builds simple ROOT TNode geometry for event display
 495
 496
 497   Int_t i;
 498
 499   printf("\n");
 500   for(i=0;i<35;i++) printf("*");
 501   printf(" VZERO BuildGeometry ");
 502   for(i=0;i<35;i++) printf("*");
 503   printf("\n");
 504
 505   TNode *Top, *Node0, *Node1, *Node2;
 506   TNode *Node3, *Node4 , *Node5, *Node6 , *Node7;
 507   TNode *V0Rnode, *V0Rnode0, *V0Rnode6 , *V0Rnode7, *V0Rnode8, *V0Rnode9;
 508   TNode *V0Rnode1, *V0Rnode2, *V0Rnode3, *V0Rnode4, *V0Rnode5;
 509   const int kColorVZERO  = kGreen;
 510
 511   Top = gAlice->GetGeometry()->GetNode("alice");
 512
 513   Float_t  height1, height2, height3, height4, height5;
 514   Float_t  height;
 515   Float_t  theta;
 516   Float_t  half_thick_alu;
 517   Float_t  half_thick_qua1,half_thick_qua2,half_thick_qua3;
 518   Float_t  half_thick_qua4,half_thick_qua5;
 519   Float_t  zdet;
 520   Float_t  r0, r5;
 521   Float_t  pi = TMath::Pi();
 522   Float_t  thick_alu;
 523
 524   height1           =     2.3;
 525   height2           =     3.7;
 526   height3           =     6.2;
 527   height4           =    10.5;
 528   height5           =    10.5;
 529
 530   theta             = pi/12.0/2.0;
 531   half_thick_alu    = 0.0025;
 532   thick_alu         = 2.0 * half_thick_alu;
 533   half_thick_qua1   = fThickness1/2.0;
 534   half_thick_qua2   = half_thick_qua1  - 0.25;
 535   half_thick_qua3   = half_thick_qua2  - 0.25;
 536   half_thick_qua4   = half_thick_qua3  - 0.25;
 537   half_thick_qua5   = half_thick_qua4  - 0.25;
 538
 539   zdet              =    86.9 +fThickness/2.0;
 540   r0                =    3.4;
 541   height            =    height1 + height2 + height3 + height4 + height5;
 542   r5                =    r0 + height;
 543
 544   Float_t   partube[3];
 545
 546   partube[0] =  r0 - 0.2;
 547   partube[1] = (r5 + 1.0) / TMath::Cos(theta);
 548   partube[2] = fThickness/2.0;
 549
 550   TTUBE *V0RI = new TTUBE("V0RI", "V0RI", "void", partube[0], partube[1], partube[2]);
 551
 552   Top->cd();
 553
 554   V0Rnode = new TNode("V0RI","V0RI",V0RI,0.0,0.0,+zdet,0);
 555
 556   V0Rnode->SetLineColor(kBlue);
 557   fNodes->Add(V0Rnode);
 558
 559   V0Rnode->SetVisibility(2);
 560
 561
 562 // Rondelles de carbone (epaisseur 1 mm) de maintien des cellules ...
 563
 564
 565   Float_t   parbox[10];
 566
 567   parbox[0] =    0.;
 568   parbox[1] =  360.;
 569   parbox[2] =    24;
 570   parbox[3] =     2;
 571   parbox[4] =  -0.1/2.0;
 572   parbox[5] =  r0;
 573   parbox[6] =  r5;
 574   parbox[7] =  +0.1/2.0;
 575   parbox[8] =  r0;
 576   parbox[9] =  r5;
 577
 578
 579   TPGON *V0CA = new TPGON("V0CA", "V0CA", "void",parbox[0], parbox[1],
 580                             parbox[2],parbox[3]);
 581
 582   V0CA->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 583   V0CA->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 584
 585   V0Rnode->cd();
 586   V0Rnode6 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0, fThickness/2.0-parbox[7],0);
 587   V0Rnode6->SetLineColor(kYellow);
 588   fNodes->Add(V0Rnode6);
 589   V0Rnode->cd();
 590   V0Rnode7 = new TNode("V0CA", "V0CA",V0CA,0.0,0.0,-fThickness/2.0+parbox[7],0);
 591   V0Rnode7->SetLineColor(kYellow);
 592   fNodes->Add(V0Rnode7);
 593
 594   parbox[4] =  -fThickness/2.0;
 595   parbox[5] =  r0 - 0.2;
 596   parbox[6] =  r0;
 597   parbox[7] =  +fThickness/2.0;
 598   parbox[8] =  r0 - 0.2;
 599   parbox[9] =  r0;
 600
 601   TPGON  *V0IR = new TPGON("V0IR","V0IR","void",  parbox[0], parbox[1],
 602                             parbox[2],parbox[3]);
 603   V0IR->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 604   V0IR->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 605
 606   V0Rnode->cd();
 607   V0Rnode8 = new TNode("V0IR", "V0IR",V0IR,0.0,0.0,0.0,0);
 608   V0Rnode8->SetLineColor(kYellow);
 609   fNodes->Add(V0Rnode8);
 610
 611   parbox[4] =  -fThickness/2.0;
 612   parbox[5] =  r5;
 613   parbox[6] =  r5 + 1.0;
 614   parbox[7] =  +fThickness/2.0;
 615   parbox[8] =  r5;
 616   parbox[9] =  r5 + 1.0;
 617
 618   TPGON  *V0ER = new TPGON("V0ER","V0ER","void",  parbox[0], parbox[1],
 619                             parbox[2],parbox[3]);
 620   V0ER->DefineSection( 0, parbox[4], parbox[5], parbox[6] );
 621   V0ER->DefineSection( 1, parbox[7], parbox[8], parbox[9] );
 622
 623   V0Rnode->cd();
 624   V0Rnode9 = new TNode("V0ER", "V0ER",V0ER,0.0,0.0,0.0,0);
 625   V0Rnode9->SetLineColor(kYellow);
 626   fNodes->Add(V0Rnode9);
 627
 628   Float_t   dist0;
 629   Float_t   par[11];
 630
 631   dist0     =  r0 + height / 2.0;
 632   thick_alu =  2.0*half_thick_alu;
 633
 634   par[0]    =  half_thick_qua1;
 635   par[1]    =  0.0;
 636   par[2]    =  0.0;
 637   par[3]    =  height / 2.0 ;
 638   par[4]    =  TMath::Tan(theta) * r0;
 639   par[5]    =  TMath::Tan(theta) * r5;
 640   par[6]    =  0.0;
 641   par[7]    =  height / 2.0 ;
 642   par[8]    =  TMath::Tan(theta) * r0;
 643   par[9]    =  TMath::Tan(theta) * r5;
 644   par[10]   =  0.0;
 645
 646   TTRAP *V0R0 = new TTRAP("V0R0", "V0R0", "void", par[0], par[1], par[2], par[3],
 647                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 648
 649   Float_t   dist1;
 650   Float_t   r1;
 651   Float_t   offset;
 652
 653   dist1     =  (- height + height1) /2.0;
 654   r1        =  r0 + height1;
 655   offset    = - fThickness/2.0 + 0.1;
 656
 657   par[0]    =  half_thick_qua1 - thick_alu;
 658   par[3]    =  height1 / 2.0 - thick_alu;
 659   par[4]    =  TMath::Tan(theta) * r0 - thick_alu;
 660   par[5]    =  TMath::Tan(theta) * r1- thick_alu;
 661   par[7]    =  height1 / 2.0 - thick_alu;
 662   par[8]    =  TMath::Tan(theta) * r0 - thick_alu;
 663   par[9]    =  TMath::Tan(theta) * r1 - thick_alu;
 664
 665   TTRAP *V0R1 = new TTRAP("V0R1", "V0R1", "void", par[0], par[1], par[2], par[3],
 666                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 667
 668
 669   Float_t   dist2;
 670   Float_t   r2;
 671
 672   dist2     =    (- height + height2) /2.0 + height1;
 673   r2        =       r1 + height2;
 674
 675   par[0]    =  half_thick_qua2 - thick_alu;
 676   par[3]    =  height2 / 2.0 - thick_alu;
 677   par[4]    =  TMath::Tan(theta) * r1 - thick_alu;
 678   par[5]    =  TMath::Tan(theta) * r2 - thick_alu;
 679   par[7]    =  height2 / 2.0 - thick_alu;
 680   par[8]    =  TMath::Tan(theta) * r1 - thick_alu;
 681   par[9]    =  TMath::Tan(theta) * r2 - thick_alu;
 682
 683
 684   TTRAP *V0R2 = new TTRAP("V0R2", "V0R2", "void", par[0], par[1], par[2], par[3],
 685                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 686
 687
 688   Float_t   dist3;
 689   Float_t   r3;
 690
 691   dist3     =    (- height + height3) /2.0 + height1 + height2;
 692   r3        =       r2 + height3;
 693
 694   par[0]    =  half_thick_qua3 - thick_alu;
 695   par[3]    =  height3 / 2.0 - thick_alu;
 696   par[4]    =  TMath::Tan(theta) * r2 - thick_alu;
 697   par[5]    =  TMath::Tan(theta) * r3 - thick_alu;
 698   par[7]    =  height3 / 2.0 - thick_alu;
 699   par[8]    =  TMath::Tan(theta) * r2 - thick_alu;
 700   par[9]    =  TMath::Tan(theta) * r3 - thick_alu;
 701
 702
 703   TTRAP *V0R3 = new TTRAP("V0R3", "V0R3", "void", par[0], par[1], par[2], par[3],
 704                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 705
 706
 707   Float_t   dist4;
 708   Float_t   r4;
 709
 710   dist4     =    (- height + height4) /2.0 + height1 + height2 + height3;
 711   r4        =       r3 + height4;
 712
 713   par[0]    =  half_thick_qua4 - thick_alu;
 714   par[3]    =  height4 / 2.0 - thick_alu;
 715   par[4]    =  TMath::Tan(theta) * r3 - thick_alu;
 716   par[5]    =  TMath::Tan(theta) * r4 - thick_alu;
 717   par[7]    =  height4 / 2.0 - thick_alu;
 718   par[8]    =  TMath::Tan(theta) * r3 - thick_alu;
 719   par[9]    =  TMath::Tan(theta) * r4 - thick_alu;
 720
 721
 722   TTRAP *V0R4 = new TTRAP("V0R4", "V0R4", "void", par[0], par[1], par[2], par[3],
 723                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 724
 725
 726   Float_t   dist5;
 727
 728   dist5     =    (- height + height5) /2.0 + height1 + height2 + height3 + height4;
 729
 730   par[0]    =  half_thick_qua5 - thick_alu;
 731   par[3]    =  height5 / 2.0 - thick_alu;
 732   par[4]    =  TMath::Tan(theta) * r4 - thick_alu;
 733   par[5]    =  TMath::Tan(theta) * r5 - thick_alu;
 734   par[7]    =  height5 / 2.0 - thick_alu;
 735   par[8]    =  TMath::Tan(theta) * r4 - thick_alu;
 736   par[9]    =  TMath::Tan(theta) * r5 - thick_alu;
 737
 738
 739   TTRAP *V0R5 = new TTRAP("V0R5", "V0R5", "void", par[0], par[1], par[2], par[3],
 740                 par[4], par[5], par[6], par[7], par[8], par[9], par[10]);
 741
 742
 743   Float_t  phi;
 744   Float_t  phi_deg= 180./12.;
 745   Float_t  phi_rad;
 746   Float_t  xdet,ydet;
 747   Int_t    n_detec = 1;
 748   char     NameNode[12];
 749
 750
 751   for (phi = 7.5; phi < 360.0; phi = phi + phi_deg)
 752   {
 753
 754     TRotMatrix* mat920 = new TRotMatrix("rot920","rot920", 90.0, +phi, 90., 90.+phi, 0.0, 0.0 );
 755
 756     phi_rad = phi*pi/180.;
 757     xdet = dist0*TMath::Sin(phi_rad);
 758     ydet = dist0*TMath::Cos(phi_rad);
 759
 760
 761     sprintf(NameNode,"SUBDET%d",n_detec);
 762
 763     V0Rnode->cd();
 764     V0Rnode0 = new TNode(NameNode,NameNode,V0R0,-xdet,ydet, offset + half_thick_qua1,mat920);
 765     V0Rnode0->SetLineColor(kColorVZERO);
 766     fNodes->Add(V0Rnode0);
 767     n_detec++;
 768
 769     sprintf(NameNode,"SUBDET%d",n_detec);
 770     V0Rnode0->cd();
 771     V0Rnode1 = new TNode(NameNode,NameNode,V0R1,0.0,dist1, 0.0,0);
 772     V0Rnode1->SetLineColor(kColorVZERO);
 773     fNodes->Add(V0Rnode1);
 774     n_detec++;
 775
 776     sprintf(NameNode,"SUBDET%d",n_detec);
 777     V0Rnode0->cd();
 778     V0Rnode2 = new TNode(NameNode,NameNode,V0R2,0.0,dist2, - half_thick_qua1 + half_thick_qua2,0);
 779     V0Rnode2->SetLineColor(kColorVZERO);
 780     fNodes->Add(V0Rnode2);
 781     n_detec++;
 782
 783
 784     sprintf(NameNode,"SUBDET%d",n_detec);
 785     V0Rnode0->cd();
 786     V0Rnode3 = new TNode(NameNode,NameNode,V0R3,0.0,dist3, - half_thick_qua1 + half_thick_qua3,0);
 787     V0Rnode3->SetLineColor(kColorVZERO);
 788     fNodes->Add(V0Rnode3);
 789     n_detec++;
 790
 791     sprintf(NameNode,"SUBDET%d",n_detec);
 792     V0Rnode0->cd();
 793     V0Rnode4 = new TNode(NameNode,NameNode,V0R4,0.0,dist4, - half_thick_qua1 + half_thick_qua4,0);
 794     V0Rnode4->SetLineColor(kColorVZERO);
 795     fNodes->Add(V0Rnode4);
 796     n_detec++;
 797
 798     sprintf(NameNode,"SUBDET%d",n_detec);
 799     V0Rnode0->cd();
 800     V0Rnode5 = new TNode(NameNode,NameNode,V0R5,0.0,dist5, - half_thick_qua1 + half_thick_qua5,0);
 801     V0Rnode5->SetLineColor(kColorVZERO);
 802     fNodes->Add(V0Rnode5);
 803     n_detec++;
 804
 805     V0Rnode0->SetVisibility(2);
 806
 807   }
 808
 809
 810 //  Here I add the enveloppe of the  FRONTAL ABSORBER defined by Andreas Morsch
 811 //  in   AliABSOv0::CreateGeometry()  :
 812
 813     Float_t parm[24];
 814     Float_t dz;
 815
 816     Top->cd();
 817
 818     parm[0]  = 0.;
 819     parm[1]  = 360.;
 820     parm[2]  = 7.;
 821
 822     parm[3]  = -(zRear-zAbsStart)/2.;
 823     parm[4]  = rAbs;
 824     parm[5]  = zAbsStart * TMath::Tan(theta1);
 825
 826     parm[6]  = parm[3]+(zNose-zAbsStart);
 827     parm[7]  = rAbs;
 828     parm[8]  = zNose * TMath::Tan(theta1);
 829
 830     parm[9]  = parm[3]+(zConeTPC-zAbsStart);
 831     parm[10] = rAbs;
 832     parm[11] = parm[8] + (parm[9] - parm[6]) * TMath::Tan(theta2);
 833
 834     parm[12] = parm[3]+(zOpen-zAbsStart);
 835     parm[13] = rAbs;
 836     parm[14] = parm[11] + (parm[12] - parm[9]) * TMath::Tan(accMax);
 837
 838     parm[15] = parm[3]+(zRear-dRear-zAbsStart);
 839     parm[16] = rAbs   + (parm[15] - parm[12]) * TMath::Tan(thetaOpen1) ;
 840     parm[17] = parm[14] + (parm[15] - parm[12]) * TMath::Tan(accMax);
 841
 842     parm[18] = parm[3]+(zRear-dRear-zAbsStart);
 843     parm[19] = (zRear-dRear) * TMath::Tan(accMin);
 844     parm[20] = parm[14] + (parm[18] - parm[12]) * TMath::Tan(accMax);
 845
 846     parm[21] = -parm[3];
 847     parm[22] = zRear* TMath::Tan(accMin);
 848     parm[23] = parm[20] + (parm[21] - parm[18]) * TMath::Tan(accMax);
 849
 850     printf(" zRear, zAbsStart,  rAbs =  %f , %f , %f \n\n",
 851              zRear, zAbsStart,  rAbs );
 852
 853
 854     TPCON *abs0 = new TPCON("abs0", "abs0", "void", parm[0], parm[1], parm[2]);
 855
 856
 857     abs0->DefineSection(0, parm[3],  parm[4],  parm[5] );
 858     abs0->DefineSection(1, parm[6],  parm[7],  parm[8] );
 859     abs0->DefineSection(2, parm[9], parm[10], parm[11] );
 860     abs0->DefineSection(3,parm[12], parm[13], parm[14] );
 861     abs0->DefineSection(4,parm[15], parm[16], parm[17] );
 862     abs0->DefineSection(5,parm[18], parm[19], parm[20] );
 863     abs0->DefineSection(6,parm[21], parm[22], parm[23] );
 864
 865     dz = (zRear-zAbsStart)/2.+zAbsStart;
 866
 867     TRotMatrix* mat921 = new TRotMatrix("rot921","rot921",90.0,0.0,90.,90.0,180.0,0.0);
 868
 869     Node0 = new TNode("abs0","abs0",abs0,0.0,0.0,dz,0);
 870     Node0->SetLineColor(38);
 871     fNodes->Add(Node0);
 872
 873
 874     Float_t cpar[5];
 875
 876     cpar[0] = (zNose - zAbsStart) / 2.;
 877     cpar[1] = zAbsStart * TMath::Tan(accMax);
 878     cpar[2] = zAbsStart * TMath::Tan(theta1)-dSteel;
 879     cpar[3] = zNose * TMath::Tan(accMax);
 880     cpar[4] = zNose * TMath::Tan(theta1)-dSteel;
 881
 882     dz = -(zRear-zAbsStart)/2.+cpar[0];
 883
 884     TCONE *abs1 =  new TCONE("abs1", "abs1", "void", cpar[0], cpar[1], cpar[2],
 885                               cpar[3], cpar[4]);
 886
 887     Node0->cd();
 888
 889     Node1 = new TNode("abs1","abs1",abs1,0.0,0.0,dz,0);
 890     Node1->SetLineColor(7);
 891     fNodes->Add(Node1);
 892
 893 //  Here I add a reference box to visualise the vertex zone :
 894
 895     Top->cd();
 896
 897     Float_t  paref[3];
 898
 899     paref[0]  =  10.0;
 900     paref[1]  =  15.0;
 901     paref[2]  =   5.6;
 902
 903     TBRIK *aref = new TBRIK("aref","aref", "void", paref[0],paref[1],paref[2]);
 904
 905     Node2 = new TNode("aref","aref",aref,0.0,0.0,0.0,0);
 906     Node2->SetLineColor(kBlue);
 907     fNodes->Add(Node2);
 908
 909 //  Here I add the  mother volume  QBPM
 910 //  and the flanges  QB29, QB22 et QB24 defined by Andreas Morsch
 911 //  in   AliPIPEv0::CreateGeometry()  :
 912
 913
 914     Float_t parp[36];
 915
 916 //  Mother Volume QBPM :
 917
 918     parp[0]  =    0;
 919     parp[1]  =  360;
 920     parp[2]  =   11;
 921
 922     parp[3]  = - 90;
 923     parp[4]  =    0;
 924     parp[5]  =    5.8;
 925
 926     parp[6]  = - 81.0;
 927     parp[7]  =    0.;
 928     parp[8]  =    5.8;
 929
 930     parp[9]  = - 81.;
 931     parp[10]  =    0.;
 932     parp[11] =    4.22;
 933
 934     parp[12] = - 28.00;
 935     parp[13] =    0;
 936     parp[14] =    4.22;
 937
 938     parp[15] = - 28.00;
 939     parp[16] =    0;
 940     parp[17] =    3.2;
 941
 942     parp[18] =    0;
 943     parp[19] =    0;
 944     parp[20] =    3.2;
 945
 946     parp[21] =   28.00;
 947     parp[22] =    0;
 948     parp[23] =    3.2;
 949
 950     parp[24] =   28.00;
 951     parp[25] =    0;
 952     parp[26] =    4.22;
 953
 954     parp[27] =  250;
 955     parp[28] =    0;
 956     parp[29] =   4.22;
 957
 958     parp[30] =  250;
 959     parp[31] =    0;
 960     parp[32] =    5;
 961
 962     parp[33] =  800;
 963     parp[34] =    0;
 964     parp[35] =    5;
 965
 966     TPCON *pip0 = new TPCON("pip0", "pip0", "void", parp[0], parp[1], parp[2]);
 967
 968     pip0->DefineSection( 0, parp[3],  parp[4],  parp[5] );
 969     pip0->DefineSection( 1, parp[6],  parp[7],  parp[8] );
 970     pip0->DefineSection( 2, parp[9], parp[10], parp[11] );
 971     pip0->DefineSection( 3,parp[12], parp[13], parp[14] );
 972     pip0->DefineSection( 4,parp[15], parp[16], parp[17] );
 973     pip0->DefineSection( 5,parp[18], parp[19], parp[20] );
 974     pip0->DefineSection( 6,parp[21], parp[22], parp[23] );
 975     pip0->DefineSection( 7,parp[24], parp[25], parp[26] );
 976     pip0->DefineSection( 8,parp[27], parp[28], parp[29] );
 977     pip0->DefineSection( 9,parp[30], parp[31], parp[32] );
 978     pip0->DefineSection(10,parp[33], parp[34], parp[35] );
 979
 980     dz = 0.0;
 981
 982     Top->cd();
 983
 984     Node3 = new TNode("pip0","pip0",pip0,0.0,0.0,dz,mat921);
 985     Node3->SetLineColor(10);
 986     fNodes->Add(Node3);
 987     Node3->SetVisibility(2);
 988
 989 //  Flanges QB29 at  654.8  and   254.8  cms :
 990
 991     Float_t  ptube[3];
 992
 993     ptube[0] = 3.0;
 994     ptube[1] = 4.9;
 995     ptube[2] = 2.2;
 996
 997     TTUBE *pip1 = new TTUBE("pip1", "pip1", "void", ptube[0], ptube[1], ptube[2]);
 998
 999     Node3->cd();
1000
1001
1002     Node4 = new TNode("pip1","pip1",pip1,0.0,0.0,254.8,0);
1003     Node4->SetLineColor(6);
1004     fNodes->Add(Node4);
1005
1006     TTUBE *pip2 = new TTUBE("pip2", "pip2", "void", ptube[0], ptube[1], ptube[2]);
1007
1008     Node3->cd();
1009
1010     Node5 = new TNode("pip2","pip2",pip2,0.0,0.0,654.8,0);
1011     Node5->SetLineColor(6);
1012     fNodes->Add(Node5);
1013
1014
1015 //  Al-Be  section QBAB at 335.0 cm  (LEFT side) :
1016
1017     ptube[0] =  2.90;
1018     ptube[1] =  3.05;
1019     ptube[2] = 171.0;
1020
1021     TTUBE *pip3 = new TTUBE("pip3", "pip3", "void", ptube[0], ptube[1], ptube[2]);
1022
1023     Node3->cd();
1024
1025     Node6 = new TNode("pip3","pip3",pip3,0.0,0.0,335.0+ptube[2],0);
1026     Node6->SetLineColor(6);
1027     fNodes->Add(Node6);
1028
1029 // Here I add the flange which is sitting on beam line
1030 // right in front of V0R detector, and which I found on CERN drawing
1031 // entitled : ALICE BEAM VACCUM CHAMBER - RB26 version III :
1032
1033     ptube[0] = 3.0;
1034     ptube[1] = 5.675;
1035     ptube[2] = 0.9;
1036
1037     TTUBE *pip4 = new TTUBE("pip4", "pip4", "void", ptube[0], ptube[1], ptube[2]);
1038
1039     Node3->cd();
1040
1041
1042     Node7 = new TNode("pip4","pip4",pip4,0.0,0.0,-85.0-0.9,0);
1043     Node7->SetLineColor(6);
1044     fNodes->Add(Node7);
1045
1046  }
1047
1048
1049 //------------------------------------------------------------------------
1050 void AliVZEROv0::CreateMaterials()
1051 {
1052   Int_t i;
1053
1054   printf("\n");
1055   for(i=0;i<35;i++) printf("*");
1056   printf(" VZERO create materials ");
1057   for(i=0;i<35;i++) printf("*");
1058   printf("\n");
1059
1060 /* ...................  OLD VALUES  ( used in RICH) ............................
1061     Float_t ppckov[14] = { 5.63e-9,5.77e-9,5.9e-9,6.05e-9,6.2e-9,6.36e-9,6.52e-9,
1062                            6.7e-9,6.88e-9,7.08e-9,7.3e-9,7.51e-9,7.74e-9,8e-9 };
1063     Float_t rindex_quarz[14] = { 1.528309,1.533333,
1064                                  1.538243,1.544223,1.550568,1.55777,
1065                                  1.565463,1.574765,1.584831,1.597027,
1066                                  1.611858,1.6277,1.6472,1.6724 };
1067     Float_t absco_quarz[14] = { 20.126,16.27,13.49,11.728,9.224,8.38,7.44,7.17,
1068                                 6.324,4.483,1.6,.323,.073,0. };
1069 ...................................................................................... */
1070
1071
1072     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,
1073                            6.9e-9, 7.1e-9, 7.3e-9, 7.5e-9, 7.7e-9, 7.9e-9, 8.1e-9 };
1074
1075     Float_t rindex_quarz[14] = { 1.52398,  1.53090, 1.53835, 1.54641, 1.55513, 1.56458,
1076                                  1.57488,  1.58611, 1.59842, 1.61197, 1.62696, 1.64362,
1077                                  1.662295, 1.68337 };
1078
1079     Float_t absco_quarz[14] = { 105.8,  45.656, 35.665, 28.598, 25.007, 21.04, 17.525,
1080                                 14.177, 9.282, 4.0925, 1.149, 0.3627, 0.1497, 0.05 };
1081
1082     Float_t effic_all[14]   = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1083
1084
1085     Float_t rindex_alu[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1086
1087     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,
1088                                1e-4,1e-4,1e-4,1e-4 };
1089     Float_t effic_alu[14]  = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
1090
1091
1092     Int_t *idtmed = fIdtmed->GetArray()-2999;
1093
1094     TGeant3 *geant3 = (TGeant3*) gMC;
1095
1096 //  Parameters related to Quarz (SiO2) :
1097
1098     Float_t aqua[2], zqua[2], densqua, wmatqua[2];
1099     Int_t nlmatqua;
1100
1101     aqua[0]    = 28.09;
1102     aqua[1]    = 16.;
1103     zqua[0]    = 14.;
1104     zqua[1]    = 8.;
1105     densqua    = 2.64;
1106     nlmatqua   = -2;
1107     wmatqua[0] = 1.;
1108     wmatqua[1] = 2.;
1109
1110 // Parameters  related to aluminum sheets :
1111
1112     Float_t  aal   = 26.98;
1113     Float_t  zal   = 13.00;
1114     Float_t  densal=   2.7;
1115     Float_t  radlal=   8.9;
1116
1117 // Parameters  related to scintillator CH :
1118
1119     Float_t ascin[2] = {1.01,12.01};
1120     Float_t zscin[2] = {1,6};
1121     Float_t wscin[2] = {1,1};
1122     Float_t denscin  = 1.03;
1123
1124 //  Definition of materials :
1125
1126     AliMaterial( 1, "AIR A$", 14.61, 7.3, .001205, 30420., 67500);
1127     AliMaterial(11, "AIR I$", 14.61, 7.3, .001205, 30420., 67500);
1128     AliMaterial( 2, "CARBON$"  , 12.01, 6.0, 2.265, 18.8, 49.9);
1129     AliMixture(  3, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
1130     AliMaterial( 4, "ALUMINIUM1$", 26.98, 13., 2.7, 8.9, 37.2);
1131     AliMaterial( 5, "ALUMINIUM2$", aal, zal, densal, radlal, 0);
1132
1133
1134     AliMixture( 6, "Scintillator$",ascin,zscin,denscin,-2,wscin);
1135
1136
1137     Int_t   ISXFLD = gAlice->Field()->Integ();
1138     Float_t SXMGMX = gAlice->Field()->Max();
1139
1140     Float_t tmaxfd, stemax, deemax, epsil, stmin;
1141
1142     tmaxfd = -10.;
1143     stemax = -0.1;
1144     deemax = -0.1;
1145     epsil  = -0.01;
1146     stmin  = -0.001;
1147
1148
1149 //  Active Air :
1150     AliMedium(1, "ACTIVE AIR$", 1, 1, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
1151
1152 //  Inactive air :
1153
1154     AliMedium(11, "INACTIVE AIR$", 11, 0, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
1155
1156     AliMedium(2, "CARBON$ ", 2,  1, ISXFLD, SXMGMX, tmaxfd, stemax, deemax, epsil, stmin);
1157
1158     AliMedium(3, "QUARZ$", 3, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepQua, fMaxDestepQua, epsil, stmin);
1159
1160     AliMedium(4,"ALUMINUM1$",4, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
1161     AliMedium(5,"ALUMINUM2$",5, 1, ISXFLD, SXMGMX, tmaxfd, fMaxStepAlu, fMaxDestepAlu, epsil, stmin);
1162     AliMedium(6,"SCINTILLATOR$",6, 1, ISXFLD, SXMGMX, 10., .01, 1., .003, .003);
1163
1164     gMC->Gstpar(idtmed[3000], "LOSS", 1.);  //  [3000] = air ACTIF  [3010] = air INACTIF
1165     gMC->Gstpar(idtmed[3000], "HADR", 1.);
1166     gMC->Gstpar(idtmed[3000], "DCAY", 1.);
1167     gMC->Gstpar(idtmed[3000], "DRAY", 1.);
1168
1169     gMC->Gstpar(idtmed[3001], "LOSS", 1.);  //  [3001] = carbon
1170     gMC->Gstpar(idtmed[3001], "HADR", 1.);
1171     gMC->Gstpar(idtmed[3001], "DCAY", 1.);
1172     gMC->Gstpar(idtmed[3001], "DRAY", 1.);
1173
1174     gMC->Gstpar(idtmed[3002], "LOSS", 1.);  //  [3002] = quartz
1175     gMC->Gstpar(idtmed[3002], "HADR", 1.);
1176     gMC->Gstpar(idtmed[3002], "DCAY", 1.);
1177     gMC->Gstpar(idtmed[3002], "DRAY", 1.);
1178
1179     gMC->Gstpar(idtmed[3003], "LOSS", 1.);  //  [3003] = normal aluminum
1180     gMC->Gstpar(idtmed[3003], "HADR", 1.);
1181     gMC->Gstpar(idtmed[3003], "DCAY", 1.);
1182     gMC->Gstpar(idtmed[3003], "DRAY", 1.);
1183
1184     gMC->Gstpar(idtmed[3004], "LOSS", 1.);  //  [3004] = reflecting aluminum
1185     gMC->Gstpar(idtmed[3004], "HADR", 1.);
1186     gMC->Gstpar(idtmed[3004], "DCAY", 1.);
1187     gMC->Gstpar(idtmed[3004], "DRAY", 1.);
1188
1189     gMC->Gstpar(idtmed[3005], "LOSS", 1.);  //  [3005] = scintillator
1190     gMC->Gstpar(idtmed[3005], "HADR", 1.);
1191     gMC->Gstpar(idtmed[3005], "DCAY", 1.);
1192     gMC->Gstpar(idtmed[3005], "DRAY", 1.);
1193
1194     geant3->Gsckov(idtmed[3002], 14, ppckov, absco_quarz, effic_all,rindex_quarz);
1195
1196     geant3->Gsckov(idtmed[3004], 14, ppckov, absco_alu, effic_alu, rindex_alu);
1197
1198 }
1199 //---------------------------------------------------------------------
1200 void AliVZEROv0::DrawModule()
1201 {
1202
1203 //  Drawing is done in DrawVZERO.C
1204
1205    Int_t i;
1206
1207    printf("\n");
1208    for(i=0;i<35;i++) printf("*");
1209    printf(" VZERO DrawModule ");
1210    for(i=0;i<35;i++) printf("*");
1211    printf("\n");
1212
1213
1214 }
1215
1216 //-------------------------------------------------------------------
1217 void AliVZEROv0::Init()
1218 {
1219 // Initialises version 0 of the VZERO Detector
1220 // Just prints an information message
1221
1222    Int_t i;
1223
1224    printf("\n");
1225    for(i=0;i<35;i++) printf("*");
1226    printf(" VZERO_Init \n");
1227    for(i=0;i<35;i++) printf("*");
1228    printf("\n");
1229
1230    fMulti       = 0;
1231    fNCerenkovs  = 0;
1232    fNGCerenkovs = 0;
1233    fNdead       = 0;
1234
1235    BookingHistograms();
1236
1237 }
1238
1239 //-------------------------------------------------------------------
1240
1241 void AliVZEROv0::StepManager()
1242 {
1243
1244 //   Minimal version of StepManager :
1245 //   Everything has been removed, I only AddHit whenever hit is in
1246 //   volume V0RI.
1247
1248      Int_t          copy;
1249      Int_t          vol[4];  // (box, layer, row, column) indices
1250      Float_t        hits[19];  // position wrt MRS,   energies...
1251
1252      TLorentzVector pos;
1253      Float_t        global[3];
1254      Float_t        local[3];
1255
1256      TLorentzVector momentum;
1257      Float_t        theta;
1258      Float_t        phi;
1259      Float_t        mom[4];
1260      Float_t        kRaddeg = 180/TMath::Pi();
1261
1262      Float_t        TrackEnters = 0.0;
1263      Float_t        TrackExits  = 0.0;
1264      Float_t        Cerenkov    = 0.0;
1265
1266      gMC->SetMaxStep(fMaxStepAlu);
1267      gMC->SetMaxStep(fMaxStepQua);
1268
1269      if (!gMC->IsTrackAlive()) return;
1270
1271      if (gMC->IsTrackEntering())       TrackEnters = 1.0;
1272      if (gMC->IsTrackExiting() )       TrackExits  = 1.0;
1273      if (gMC->TrackPid() == 50000050)  Cerenkov    = 1.0;
1274
1275
1276
1277      gMC->TrackPosition(pos);
1278      gMC->TrackMomentum(momentum);
1279
1280      mom[0] = momentum[0];
1281      mom[1] = momentum[1];
1282      mom[2] = momentum[2];
1283      mom[3] = momentum[3];
1284
1285      Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
1286      Double_t rt = TMath::Sqrt(tc);
1287      theta   = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
1288      phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1289
1290      global[0] = pos[0];
1291      global[1] = pos[1];
1292      global[2] = pos[2];
1293
1294
1295      gMC->Gmtod(global,local,1);
1296
1297      hits[0]   = global[0];
1298      hits[1]   = global[1];
1299      hits[2]   = global[2];
1300      hits[3]   = local[0];
1301      hits[4]   = local[1];
1302      hits[5]   = local[2];
1303      hits[6]   = gMC->Edep();
1304      hits[7]   = gMC->Etot();
1305      hits[8]   = Float_t (gMC->TrackPid());
1306      hits[9]   = Float_t (gMC->IdFromPDG(gMC->TrackPid()));
1307      hits[10]  = gMC->TrackTime();
1308      hits[11]  = TrackEnters;
1309      hits[12]  = TrackExits;
1310      hits[13]  = gMC->TrackCharge();
1311      hits[14]  = Cerenkov;
1312
1313      hits[16]  = theta;
1314      hits[17]  = phi;
1315
1316      vol[0]    = gMC->CurrentVolOffID(1, vol[1]);
1317      vol[2]    = gMC->CurrentVolID(copy);
1318      vol[3]    = copy;
1319
1320
1321      if (gMC->CurrentVolID(copy) >= gMC->VolId("V0RI") &&
1322          gMC->CurrentVolID(copy) <= gMC->VolId("V0E4"))
1323      {
1324          AddHit(gAlice->CurrentTrack(), vol, hits);
1325         }
1326
1327   }
1328
1329 //---------------------------------------------------------------------
1330 void AliVZEROv0::AddHit(Int_t track, Int_t* vol, Float_t* hits)
1331 {
1332
1333   // Adds a  hit
1334
1335
1336    TClonesArray  &lhits = *fHits;
1337
1338    new(lhits[fNhits++]) AliVZEROhit(fIshunt, track, vol, hits);
1339
1340 }
1341
1342 //---------------------------------------------------------------------
1343 void AliVZEROv0::FinishEvent()
1344 {
1345
1346    printf("\n");
1347    for(int i=0;i<30;i++) printf("*");
1348    printf(" VZERO_finishevent");
1349    for(int i=0;i<30;i++) printf("*");
1350    printf("\n");
1351
1352      AddDigit(tracks, digits);
1353
1354
1355      if(fMulti > 0) fhMultiplicity->Fill(fMulti);
1356      fhCerenkov->Fill(fNCerenkovs);
1357
1358      fMulti       = 0;
1359      fNCerenkovs  = 0;
1360      fNGCerenkovs = 0;
1361      fNdead       = 0;
1362
1363 }
1364
1365 //---------------------------------------------------------------------
1366 void AliVZEROv0::AddDigit(Int_t *tracks, Int_t* digits)
1367 {
1368
1369    TClonesArray  &ldigits = *fDigits;
1370
1371    new(ldigits[fNdigits++]) AliVZEROdigit(tracks, digits);
1372
1373 }
1374
1375
1376 //---------------------------------------------------------------------
1377 void AliVZEROv0::MakeBranch(Option_t *option)
1378 {
1379
1380   // Creates new branches in the current Root Tree
1381
1382
1383   char branchname[10];
1384   sprintf(branchname,"%s",GetName());
1385
1386
1387   char *H = strstr(option,"H");
1388
1389   if (fHits   && gAlice->TreeH() && H) {
1390     gAlice->TreeH()->Branch(branchname,&fHits, fBufferSize);
1391     printf("* AliDetector::MakeBranch * Making Branch %s for hits\n",branchname);
1392   }
1393
1394   char *D = strstr(option,"D");
1395   //
1396   if (fDigits   && gAlice->TreeD() && D) {
1397     gAlice->TreeD()->Branch(branchname,&fDigits, fBufferSize);
1398     printf("* AliDetector::MakeBranch * Making Branch %s for digits\n",branchname);
1399   }
1400
1401
1402 }
1403
1404 //---------------------------------------------------------------------
1405 void AliVZEROv0::BookingHistograms()
1406 {
1407
1408   if (fhMultiplicity)
1409     delete fhMultiplicity;
1410
1411   if (fhGEANTcode)
1412     delete fhGEANTcode;
1413
1414   if (fhCerenkov)
1415     delete fhCerenkov;
1416
1417   if (fhToF)
1418     delete fhToF;
1419
1420 //  fhMultiplicity = new TH1F("hMultiplicity", "hMultiplicity", 350,  0. , 350.);
1421
1422   fhMultiplicity = new TH1F("hMultiplicity", "hMultiplicity", 100,  1. , 100.);
1423   fhGEANTcode    = new TH1F("hGEANTcode", "hGEANTcode", 50,  1., 50.);
1424   fhCerenkov     = new TH1F("hCerenkov", "hCerenkov", 100, 1., 100000.);
1425   fhToF          = new TH1F("hToF", "hToF",150,2.0,7.0);
1426
1427 }
1428
1429 //---------------------------------------------------------------------
1430 void AliVZEROv0::FinishRun()
1431 {
1432
1433    SavingHistograms();
1434 }
1435
1436
1437
1438 //---------------------------------------------------------------------
1439 void AliVZEROv0::SavingHistograms()
1440 {
1441
1442 //  Saves the histograms in a root file named "name.save"
1443
1444
1445   Text_t outputname[8] ;
1446   outputname = "Fileout";
1447   TFile output(outputname,"RECREATE");
1448   output.cd();
1449
1450   if (fhMultiplicity)
1451     fhMultiplicity->Write();
1452   if (fhGEANTcode)
1453     fhGEANTcode->Write();
1454   if (fhCerenkov)
1455     fhCerenkov->Write();
1456   if (fhToF)
1457     fhToF->Write();
1458 }