TOF/AliTOFv3.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 //  This class contains the functions for version 3 of the Time Of Flight    //
  21 //  detector.                                                                //
  22 //                                                                           //
  23 //  VERSION WITH 5 MODULES AND TILTED STRIPS                                 //
  24 //  HITS DEFINED FOR THIS VERSION                                            //
  25 //  HOLES FOR HMPID DETECTOR                                                  //
  26 //                                                                           //
  27 //   Authors:                                                                //
  28 //                                                                           //
  29 //   Alessio Seganti                                                         //
  30 //   Domenico Vicinanza                                                      //
  31 //                                                                           //
  32 //   University of Salerno - Italy                                           //
  33 //                                                                           //
  34 //   Fabrizio Pierella                                                       //
  35 //   University of Bologna - Italy                                           //
  36 //                                                                           //
  37 //                                                                           //
  38 //Begin_Html                                                                 //
  39 /*                                                                           //
  40 <img src="picts/AliTOFv3Class.gif">                                          //
  41 */                                                                           //
  42 //End_Html                                                                   //
  43 //                                                                           //
  44 ///////////////////////////////////////////////////////////////////////////////
  45
  46 #include <Riostream.h>
  47 #include <stdlib.h>
  48
  49 #include <TBRIK.h>
  50 #include <TGeometry.h>
  51 #include <TLorentzVector.h>
  52 #include <TNode.h>
  53 #include <TObject.h>
  54 #include <TVirtualMC.h>
  55
  56 #include "AliConst.h"
  57 #include "AliRun.h"
  58 #include "AliTOFv3.h"
  59 #include "AliTOFConstants.h" // AdC
  60 #include "AliMC.h"
  61
  62 ClassImp(AliTOFv3)
  63
  64 //_____________________________________________________________________________
  65 AliTOFv3::AliTOFv3()
  66 {
  67   //
  68   // Default constructor
  69   //
  70 }
  71
  72 //_____________________________________________________________________________
  73 AliTOFv3::AliTOFv3(const char *name, const char *title)
  74         : AliTOF(name,title)
  75 {
  76   //
  77   // Standard constructor
  78   //
  79   //
  80   // Check that FRAME is there otherwise we have no place where to
  81   // put TOF
  82   AliModule* frame=gAlice->GetModule("FRAME");
  83   if(!frame) {
  84     Error("Ctor","TOF needs FRAME to be present\n");
  85     exit(1);
  86   } else
  87     if(frame->IsVersion()!=1) {
  88       Error("Ctor","FRAME version 1 needed with this version of TOF\n");
  89       exit(1);
  90     }
  91
  92 }
  93
  94 //_____________________________________________________________________________
  95 void AliTOFv3::CreateGeometry()
  96 {
  97   //
  98   // Create geometry for Time Of Flight version 0
  99   //
 100   //Begin_Html
 101   /*
 102     <img src="picts/AliTOFv3.gif">
 103   */
 104   //End_Html
 105   //
 106   // Creates common geometry
 107   //
 108   AliTOF::CreateGeometry();
 109 }
 110
 111 //_____________________________________________________________________________
 112 void AliTOFv3::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
 113                      Float_t zlenB, Float_t zlenA, Float_t ztof0)
 114 {
 115   //
 116   // Definition of the Time Of Fligh Resistive Plate Chambers
 117   // xFLT, yFLT, zFLT - sizes of TOF modules (large)
 118
 119   Float_t  ycoor, zcoor;
 120   Float_t  par[3];
 121   Int_t    *idtmed = fIdtmed->GetArray()-499;
 122   Int_t    idrotm[100];
 123   Int_t    nrot = 0;
 124   Float_t  hTof = fRmax-fRmin;
 125
 126   Float_t radius = fRmin+2.;//cm
 127
 128   par[0] =  xtof * 0.5;
 129   par[1] =  ytof * 0.5;
 130   par[2] = zlenC * 0.5;
 131   gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
 132   par[2] = zlenB * 0.5;
 133   gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
 134   par[2] = zlenA * 0.5;
 135   gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
 136
 137
 138   // Positioning of modules
 139
 140   Float_t zcor1 = ztof0 - zlenC*0.5;
 141   Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
 142   Float_t zcor3 = 0.;
 143
 144   AliMatrix(idrotm[0], 90.,  0., 0., 0., 90,-90.);
 145   AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
 146   gMC->Gspos("FTOC", 1, "BTO1", 0,  zcor1, 0, idrotm[0], "ONLY");
 147   gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
 148   gMC->Gspos("FTOC", 1, "BTO2", 0,  zcor1, 0, idrotm[0], "ONLY");
 149   gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
 150   gMC->Gspos("FTOC", 1, "BTO3", 0,  zcor1, 0, idrotm[0], "ONLY");
 151   gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
 152
 153   gMC->Gspos("FTOB", 1, "BTO1", 0,  zcor2, 0, idrotm[0], "ONLY");
 154   gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
 155   gMC->Gspos("FTOB", 1, "BTO2", 0,  zcor2, 0, idrotm[0], "ONLY");
 156   gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
 157
 158   gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3,  0, idrotm[0], "ONLY");
 159   gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3,  0, idrotm[0], "ONLY");
 160
 161   Float_t db = 0.5;//cm
 162   Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
 163
 164   xFLT = fStripLn;
 165   yFLT = ytof;
 166   zFLTA = zlenA;
 167   zFLTB = zlenB;
 168   zFLTC = zlenC;
 169
 170   xFST = xFLT-fDeadBndX*2;//cm
 171
 172   // Sizes of MRPC pads
 173
 174   Float_t yPad = 0.505;//cm
 175
 176   // Large not sensitive volumes with Insensitive Freon
 177   par[0] = xFLT*0.5;
 178   par[1] = yFLT*0.5;
 179
 180   if (fDebug) cout << ClassName() <<
 181                 cout <<": ************************* TOF geometry **************************"<<endl;
 182
 183   par[2] = (zFLTA *0.5);
 184   gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 185   gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
 186
 187   par[2] = (zFLTB * 0.5);
 188   gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 189   gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
 190
 191   par[2] = (zFLTC * 0.5);
 192   gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 193   gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
 194
 195   ///// Layers of Aluminum before and after detector /////
 196   ///// Aluminum Box for Modules (1.8 mm thickness)  /////
 197   ///// lateral walls not simulated for the time being
 198   //const Float_t khAlWall = 0.18;
 199   // fp to be checked
 200   const Float_t khAlWall = 0.11;
 201   par[0] = xFLT*0.5;
 202   par[1] = khAlWall/2.;//cm
 203   ycoor = -yFLT/2 + par[1];
 204   par[2] = (zFLTA *0.5);
 205   gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
 206   gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
 207   gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
 208   par[2] = (zFLTB *0.5);
 209   gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
 210   gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
 211   gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
 212   par[2] = (zFLTC *0.5);
 213   gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
 214   gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
 215   gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
 216
 217   ///////////////// Detector itself //////////////////////
 218
 219   const Float_t  kdeadBound  =  fDeadBndZ; //cm non-sensitive between the pad edge
 220   //and the boundary of the strip
 221   const Int_t    knx    = fNpadX;          // number of pads along x
 222   const Int_t    knz    = fNpadZ;          // number of pads along z
 223   const Float_t  kspace = fSpace;            //cm distance from the front plate of the box
 224
 225   Float_t zSenStrip  = fZpad*fNpadZ;//cm
 226   Float_t stripWidth = zSenStrip + 2*kdeadBound;
 227
 228   par[0] = xFLT*0.5;
 229   par[1] = yPad*0.5;
 230   par[2] = stripWidth*0.5;
 231
 232   // new description for strip volume -double stack strip-
 233   // -- all constants are expressed in cm
 234   // heigth of different layers
 235   const Float_t khhony = 0.8     ;   // heigth of HONY  Layer
 236   const Float_t khpcby = 0.08    ;   // heigth of PCB   Layer
 237   const Float_t khmyly = 0.035   ;   // heigth of MYLAR Layer
 238   const Float_t khgraphy = 0.02  ;   // heigth of GRAPHITE Layer
 239   const Float_t khglasseiy = 0.135;   // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
 240   const Float_t khsensmy = 0.11  ;   // heigth of Sensitive Freon Mixture
 241   const Float_t kwsensmz = 2*3.5 ;   // cm
 242   const Float_t klsensmx = 48*2.5;   // cm
 243   const Float_t kwpadz = 3.5;   // cm z dimension of the FPAD volume
 244   const Float_t klpadx = 2.5;   // cm x dimension of the FPAD volume
 245
 246   // heigth of the FSTR Volume (the strip volume)
 247   const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
 248   // width  of the FSTR Volume (the strip volume)
 249   const Float_t kwstripz = 10.;
 250   // length of the FSTR Volume (the strip volume)
 251   const Float_t klstripx = 122.;
 252
 253   Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
 254   // coordinates of the strip center in the strip reference frame; used for positioning
 255   // internal strip volumes
 256   Float_t posfp[3]={0.,0.,0.};
 257
 258
 259   // FSTR volume definition and filling this volume with non sensitive Gas Mixture
 260   gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
 261   //-- HONY Layer definition
 262   //  parfp[0] = -1;
 263   parfp[1] = khhony*0.5;
 264   //  parfp[2] = -1;
 265   gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
 266   // positioning 2 HONY Layers on FSTR volume
 267
 268   posfp[1]=-khstripy*0.5+parfp[1];
 269   gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 270   gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 271
 272   //-- PCB Layer definition
 273   parfp[1] = khpcby*0.5;
 274   gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
 275   // positioning 2 PCB Layers on FSTR volume
 276   posfp[1]=-khstripy*0.5+khhony+parfp[1];
 277   gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 278   gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 279   // positioning the central PCB layer
 280   gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
 281
 282
 283
 284   //-- MYLAR Layer definition
 285   parfp[1] = khmyly*0.5;
 286   gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
 287   // positioning 2 MYLAR Layers on FSTR volume
 288   posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
 289   gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 290   gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 291   // adding further 2 MYLAR Layers on FSTR volume
 292   posfp[1] = khpcby*0.5+parfp[1];
 293   gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 294   gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 295
 296
 297   //-- Graphite Layer definition
 298   parfp[1] = khgraphy*0.5;
 299   gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
 300   // positioning 2 Graphite Layers on FSTR volume
 301   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
 302   gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 303   gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 304   // adding further 2 Graphite Layers on FSTR volume
 305   posfp[1] = khpcby*0.5+khmyly+parfp[1];
 306   gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 307   gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 308
 309
 310   //-- Glass (EXT. +Semi INT.) Layer definition
 311   parfp[1] = khglasseiy*0.5;
 312   gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
 313   // positioning 2 Glass Layers on FSTR volume
 314   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
 315   gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 316   gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 317   // adding further 2 Glass Layers on FSTR volume
 318   posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
 319   gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 320   gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 321
 322
 323   //-- Sensitive Mixture Layer definition
 324   parfp[0] = klsensmx*0.5;
 325   parfp[1] = khsensmy*0.5;
 326   parfp[2] = kwsensmz*0.5;
 327   gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
 328   gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
 329   // positioning 2 gas Layers on FSTR volume
 330   // the upper is insensitive freon
 331   // while the remaining is sensitive
 332   posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
 333   gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
 334   gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
 335
 336   // dividing FSEN along z in knz=2 and along x in knx=48
 337   gMC->Gsdvn("FSEZ","FSEN",knz,3);
 338   gMC->Gsdvn("FSEX","FSEZ",knx,1);
 339
 340   // FPAD volume definition
 341   parfp[0] = klpadx*0.5;
 342   parfp[1] = khsensmy*0.5;
 343   parfp[2] = kwpadz*0.5;
 344   gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
 345   // positioning the FPAD volumes on previous divisions
 346   gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
 347
 348   ////  Positioning the Strips  (FSTR) in the FLT volumes  /////
 349
 350   // Plate A (Central)
 351
 352   Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
 353
 354   Float_t gap  = fGapA+0.5; //cm  updated distance between the strip axis
 355   Float_t zpos = 0;
 356   Float_t ang  = 0;
 357   Int_t j=1; // AdC
 358   nrot  = 0;
 359   zcoor = 0;
 360   ycoor = -14.5 + kspace ; //2 cm over front plate
 361
 362   AliMatrix (idrotm[0],  90.,  0.,90.,90.,0., 90.);
 363
 364   Int_t centerLoc= (Int_t)(fNStripA/2.) + 1; // AdC
 365
 366   //gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
 367   gMC->Gspos("FSTR",centerLoc,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY"); // AdC
 368   if(fDebug>=1) {
 369     printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 370     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 371   }
 372   zcoor -= zSenStrip;
 373   //j++; // AdC
 374   Int_t upDown = -1; // upDown=-1 -> Upper strip
 375                      // upDown=+1 -> Lower strip
 376   do{
 377     ang = atan(zcoor/radius);
 378     ang *= kRaddeg;
 379     AliMatrix (idrotm[nrot],  90.,  0.,90.-ang,90.,-ang, 90.);
 380     AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
 381     ang /= kRaddeg;
 382     ycoor = -14.5+ kspace; //2 cm over front plate
 383     ycoor += (1-(upDown+1)/2)*gap;
 384     //gMC->Gspos("FSTR",j  ,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY");
 385     //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
 386     gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY"); // AdC
 387     gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
 388     if(fDebug>=1) {
 389       printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 390       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 391     }
 392     j++; //j += 2; // AdC
 393     upDown*= -1; // Alternate strips
 394     zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
 395       upDown*gap*TMath::Tan(ang)-
 396       (zSenStrip/2)/TMath::Cos(ang);
 397   } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
 398
 399   zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
 400     upDown*gap*TMath::Tan(ang)+
 401     (zSenStrip/2)/TMath::Cos(ang);
 402
 403   gap = fGapB;
 404   zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
 405     upDown*gap*TMath::Tan(ang)-
 406     (zSenStrip/2)/TMath::Cos(ang);
 407
 408   ang = atan(zcoor/radius);
 409   ang *= kRaddeg;
 410   AliMatrix (idrotm[nrot],  90.,  0.,90.-ang,90.,-ang, 90.);
 411   AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
 412   ang /= kRaddeg;
 413
 414   ycoor = -14.5+ kspace; //2 cm over front plate
 415   ycoor += (1-(upDown+1)/2)*gap;
 416   //gMC->Gspos("FSTR",j  ,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY");
 417   //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
 418   gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY"); // AdC
 419   gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
 420   if(fDebug>=1) {
 421     printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 422     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 423   }
 424   ycoor = -hTof/2.+ kspace;//2 cm over front plate
 425
 426   // Plate  B
 427
 428   nrot = 0;
 429   Int_t i=1; // AdC
 430   upDown = 1;
 431   Float_t deadRegion = 1.0;//cm
 432
 433   zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
 434     upDown*gap*TMath::Tan(ang)-
 435     (zSenStrip/2)/TMath::Cos(ang)-
 436     deadRegion/TMath::Cos(ang);
 437
 438   ang = atan(zpos/radius);
 439   ang *= kRaddeg;
 440   AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 441   ang /= kRaddeg;
 442   ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
 443   ycoor += (1-(upDown+1)/2)*gap;
 444   zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
 445   gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 446   if(fDebug>=1) {
 447     printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 448     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 449    }
 450   i++;
 451   upDown*=-1;
 452
 453   do {
 454     zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
 455       upDown*gap*TMath::Tan(ang)-
 456       (zSenStrip/2)/TMath::Cos(ang);
 457     ang = atan(zpos/radius);
 458     ang *= kRaddeg;
 459     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 460     ang /= kRaddeg;
 461     Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
 462     Float_t deltaGapinB=0.5;    // [cm] to avoid overlaps in between initial strips
 463     ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
 464     ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
 465     zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
 466     gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 467     if(fDebug>=1) {
 468       printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 469       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 470     }
 471     upDown*=-1;
 472     i++;
 473   } while (TMath::Abs(ang*kRaddeg)<22.5);
 474   //till we reach a tilting angle of 22.5 degrees
 475
 476   ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
 477   zpos = zpos - zSenStrip/TMath::Cos(ang);
 478   // this avoid overlaps in between outer strips in plate B
 479   Float_t deltaMovingUp=0.8;    // [cm]
 480   Float_t deltaMovingDown=-0.5; // [cm]
 481
 482   do {
 483     ang = atan(zpos/radius);
 484     ang *= kRaddeg;
 485     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 486     ang /= kRaddeg;
 487     zcoor = zpos+(zFLTB/2+zFLTA/2+db);
 488     gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
 489     deltaMovingUp+=0.8; // update delta moving toward the end of the plate
 490     zpos = zpos - zSenStrip/TMath::Cos(ang);
 491     if(fDebug>=1) {
 492       printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 493       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 494     }
 495     i++;
 496
 497   }  while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
 498
 499   // Plate  C
 500
 501   zpos = zpos + zSenStrip/TMath::Cos(ang);
 502
 503   zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
 504     gap*TMath::Tan(ang)-
 505     (zSenStrip/2)/TMath::Cos(ang);
 506
 507   nrot = 0;
 508   i=0;
 509   Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
 510   ycoor= -hTof*0.5+kspace+gap+deltaGap;
 511
 512   do {
 513     i++;
 514     ang = atan(zpos/radius);
 515     ang *= kRaddeg;
 516     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 517     ang /= kRaddeg;
 518     zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
 519     gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 520     if(fDebug>=1) {
 521       printf("%s: %f,  St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
 522       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 523     }
 524     zpos = zpos - zSenStrip/TMath::Cos(ang);
 525   }  while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
 526
 527
 528   ////////// Layers after strips /////////////////
 529   // Al Layer thickness (2.3mm) factor 0.7
 530
 531   Float_t overSpace = fOverSpc;//cm
 532
 533   par[0] = xFLT*0.5;
 534   par[1] = 0.115*0.7; // factor 0.7
 535   par[2] = (zFLTA *0.5);
 536   ycoor = -yFLT/2 + overSpace + par[1];
 537   gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
 538   gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 539   par[2] = (zFLTB *0.5);
 540   gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
 541   gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 542   par[2] = (zFLTC *0.5);
 543   gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
 544   gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 545
 546
 547   // plexiglass thickness: 1.5 mm ; factor 0.3
 548   ycoor += par[1];
 549   par[0] = xFLT*0.5;
 550   par[1] = 0.075*0.3; // factor 0.3
 551   par[2] = (zFLTA *0.5);
 552   ycoor += par[1];
 553   gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
 554   gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 555   par[2] = (zFLTB *0.5);
 556   gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
 557   gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 558   par[2] = (zFLTC *0.5);
 559   gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
 560   gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 561
 562   // frame of Air
 563   ycoor += par[1];
 564   par[0] = xFLT*0.5;
 565   par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
 566   par[2] = (zFLTA *0.5);
 567   ycoor += par[1];
 568   gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
 569   gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 570   par[2] = (zFLTB *0.5);
 571   gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
 572   gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 573   par[2] = (zFLTC *0.5);
 574   gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
 575   gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 576
 577
 578   // start with cards and cooling tubes
 579   // finally, cards, cooling tubes and layer for thermal dispersion
 580   // 3 volumes
 581   // card volume definition
 582
 583   // see GEOM200 in GEANT manual
 584   AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
 585
 586   Float_t cardpar[3];
 587   cardpar[0]= 61.;
 588   cardpar[1]= 5.;
 589   cardpar[2]= 0.1;
 590   gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
 591   //alu plate volume definition
 592   cardpar[1]= 3.5;
 593   cardpar[2]= 0.05;
 594   gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
 595
 596
 597   // central module positioning (FAIA)
 598   Float_t cardpos[3], aplpos2, stepforcardA=6.625;
 599   cardpos[0]= 0.;
 600   cardpos[1]= -0.5;
 601   cardpos[2]= -53.;
 602   Float_t aplpos1 = -2.;
 603   Int_t icard;
 604   for (icard=0; icard<15; ++icard) {
 605     cardpos[2]= cardpos[2]+stepforcardA;
 606     aplpos2 = cardpos[2]+0.15;
 607     gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 608     gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 609
 610   }
 611
 612
 613   // intermediate module positioning (FAIB)
 614   Float_t stepforcardB= 7.05;
 615   cardpos[2]= -70.5;
 616   for (icard=0; icard<19; ++icard) {
 617     cardpos[2]= cardpos[2]+stepforcardB;
 618     aplpos2 = cardpos[2]+0.15;
 619     gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 620     gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 621   }
 622
 623
 624   // outer module positioning (FAIC)
 625   Float_t stepforcardC= 8.45238;
 626   cardpos[2]= -88.75;
 627   for (icard=0; icard<20; ++icard) {
 628     cardpos[2]= cardpos[2]+stepforcardC;
 629     aplpos2 = cardpos[2]+0.15;
 630     gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 631     gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 632   }
 633
 634   // tube volume definition
 635   Float_t tubepar[3];
 636   tubepar[0]= 0.;
 637   tubepar[1]= 0.4;
 638   tubepar[2]= 61.;
 639   gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
 640   tubepar[0]= 0.;
 641   tubepar[1]= 0.35;
 642   tubepar[2]= 61.;
 643   gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
 644   // positioning water tube into the steel one
 645   gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
 646
 647
 648   // rotation matrix
 649   AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
 650   // central module positioning (FAIA)
 651   Float_t tubepos[3], tdis=0.6;
 652   tubepos[0]= 0.;
 653   tubepos[1]= cardpos[1];
 654   tubepos[2]= -53.+tdis;
 655   //  tub1pos = 5.;
 656   Int_t itub;
 657   for (itub=0; itub<15; ++itub) {
 658     tubepos[2]= tubepos[2]+stepforcardA;
 659     gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 660                "ONLY");
 661   }
 662
 663
 664   // intermediate module positioning (FAIB)
 665   tubepos[2]= -70.5+tdis;
 666   for (itub=0; itub<19; ++itub) {
 667     tubepos[2]= tubepos[2]+stepforcardB;
 668     gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 669                "ONLY");
 670   }
 671
 672   // outer module positioning (FAIC)
 673   tubepos[2]= -88.75+tdis;
 674   for (itub=0; itub<20; ++itub) {
 675     tubepos[2]= tubepos[2]+stepforcardC;
 676     gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 677                "ONLY");
 678   }
 679
 680 }
 681
 682 //_____________________________________________________________________________
 683 void AliTOFv3::DrawModule() const
 684 {
 685   //
 686   // Draw a shaded view of the Time Of Flight version 3
 687   //
 688   // Set everything unseen
 689   gMC->Gsatt("*", "seen", -1);
 690   //
 691   // Set ALIC mother transparent
 692   gMC->Gsatt("ALIC","SEEN",0);
 693   //
 694   // Set the volumes visible
 695   gMC->Gsatt("ALIC","SEEN",0);
 696
 697   gMC->Gsatt("FTOA","SEEN",1);
 698   gMC->Gsatt("FTOB","SEEN",1);
 699   gMC->Gsatt("FTOC","SEEN",1);
 700   gMC->Gsatt("FLTA","SEEN",1);
 701   gMC->Gsatt("FLTB","SEEN",1);
 702   gMC->Gsatt("FLTC","SEEN",1);
 703   gMC->Gsatt("FPLA","SEEN",1);
 704   gMC->Gsatt("FPLB","SEEN",1);
 705   gMC->Gsatt("FPLC","SEEN",1);
 706   gMC->Gsatt("FSTR","SEEN",1);
 707   gMC->Gsatt("FPEA","SEEN",1);
 708   gMC->Gsatt("FPEB","SEEN",1);
 709   gMC->Gsatt("FPEC","SEEN",1);
 710
 711   gMC->Gsatt("FLZ1","SEEN",0);
 712   gMC->Gsatt("FLZ2","SEEN",0);
 713   gMC->Gsatt("FLZ3","SEEN",0);
 714   gMC->Gsatt("FLX1","SEEN",0);
 715   gMC->Gsatt("FLX2","SEEN",0);
 716   gMC->Gsatt("FLX3","SEEN",0);
 717   gMC->Gsatt("FPAD","SEEN",0);
 718
 719   gMC->Gdopt("hide", "on");
 720   gMC->Gdopt("shad", "on");
 721   gMC->Gsatt("*", "fill", 7);
 722   gMC->SetClipBox(".");
 723   gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
 724   gMC->DefaultRange();
 725   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
 726   gMC->Gdhead(1111, "Time Of Flight");
 727   gMC->Gdman(18, 4, "MAN");
 728   gMC->Gdopt("hide","off");
 729 }
 730 //_____________________________________________________________________________
 731 void AliTOFv3::DrawDetectorModules()
 732 {
 733 //
 734 // Draw a shaded view of the TOF detector version 3
 735 //
 736
 737 //Set ALIC mother transparent
 738  gMC->Gsatt("ALIC","SEEN",0);
 739
 740 //
 741 //Set volumes visible
 742 //
 743 //=====> Level 1
 744   // Level 1 for TOF volumes
 745   gMC->Gsatt("B077","seen",0);
 746
 747
 748 //==========> Level 2
 749   // Level 2
 750   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 751   gMC->Gsatt("B071","seen",0);
 752   gMC->Gsatt("B074","seen",0);
 753   gMC->Gsatt("B075","seen",0);
 754   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 755
 756
 757   // Level 2 of B071
 758   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 759   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 760   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 761   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 762   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 763   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 764   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 765   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 766   gMC->Gsatt("BTO1","seen",0);
 767
 768
 769   // Level 2 of B074
 770   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 771   gMC->Gsatt("BTO2","seen",0);
 772
 773   // Level 2 of B075
 774   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 775   gMC->Gsatt("BTO3","seen",0);
 776
 777 // ==================> Level 3
 778   // Level 3 of B071 / Level 2 of BTO1
 779   gMC->Gsatt("FTOC","seen",-2);
 780   gMC->Gsatt("FTOB","seen",-2);
 781   gMC->Gsatt("FTOA","seen",-2);
 782
 783   // Level 3 of B074 / Level 2 of BTO2
 784   // -> cfr previous settings
 785
 786   // Level 3 of B075 / Level 2 of BTO3
 787   // -> cfr previous settings
 788
 789   gMC->Gdopt("hide","on");
 790   gMC->Gdopt("shad","on");
 791   gMC->Gsatt("*", "fill", 5);
 792   gMC->SetClipBox(".");
 793   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 794   gMC->DefaultRange();
 795   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 796   gMC->Gdhead(1111,"TOF detector V1");
 797   gMC->Gdman(18, 4, "MAN");
 798   gMC->Gdopt("hide","off");
 799 }
 800
 801 //_____________________________________________________________________________
 802 void AliTOFv3::DrawDetectorStrips()
 803 {
 804 //
 805 // Draw a shaded view of the TOF strips for version 3
 806 //
 807
 808 //Set ALIC mother transparent
 809  gMC->Gsatt("ALIC","SEEN",0);
 810
 811 //
 812 //Set volumes visible
 813 //=====> Level 1
 814   // Level 1 for TOF volumes
 815   gMC->Gsatt("B077","seen",0);
 816
 817 //==========> Level 2
 818   // Level 2
 819   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 820   gMC->Gsatt("B071","seen",0);
 821   gMC->Gsatt("B074","seen",0);
 822   gMC->Gsatt("B075","seen",0);
 823   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 824
 825   // Level 2 of B071
 826   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 827   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 828   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 829   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 830   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 831   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 832   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 833   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 834   gMC->Gsatt("BTO1","seen",0);
 835
 836 // ==================> Level 3
 837   // Level 3 of B071 / Level 2 of BTO1
 838   gMC->Gsatt("FTOC","seen",0);
 839   gMC->Gsatt("FTOB","seen",0);
 840   gMC->Gsatt("FTOA","seen",0);
 841
 842   // Level 3 of B074 / Level 2 of BTO2
 843   // -> cfr previous settings
 844
 845   // Level 3 of B075 / Level 2 of BTO3
 846   // -> cfr previous settings
 847
 848
 849 // ==========================> Level 4
 850   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
 851   gMC->Gsatt("FLTC","seen",0);
 852   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
 853   gMC->Gsatt("FLTB","seen",0);
 854   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
 855   gMC->Gsatt("FLTA","seen",0);
 856
 857   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
 858   // -> cfr previous settings
 859   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
 860   // -> cfr previous settings
 861
 862   // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
 863   // -> cfr previous settings
 864
 865 //======================================> Level 5
 866   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
 867   gMC->Gsatt("FALC","seen",0); // no children for FALC
 868   gMC->Gsatt("FSTR","seen",-2);
 869   gMC->Gsatt("FPEC","seen",0); // no children for FPEC
 870   gMC->Gsatt("FECC","seen",0); // no children for FECC
 871   gMC->Gsatt("FWAC","seen",0); // no children for FWAC
 872   gMC->Gsatt("FAIC","seen",0); // no children for FAIC
 873
 874   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
 875   gMC->Gsatt("FALB","seen",0); // no children for FALB
 876 //-->  gMC->Gsatt("FSTR","seen",-2);
 877
 878
 879   // -> cfr previous settings
 880   gMC->Gsatt("FPEB","seen",0); // no children for FPEB
 881   gMC->Gsatt("FECB","seen",0); // no children for FECB
 882   gMC->Gsatt("FWAB","seen",0); // no children for FWAB
 883   gMC->Gsatt("FAIB","seen",0); // no children for FAIB
 884
 885   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
 886   gMC->Gsatt("FALA","seen",0); // no children for FALB
 887 //-->  gMC->Gsatt("FSTR","seen",-2);
 888   // -> cfr previous settings
 889   gMC->Gsatt("FPEA","seen",0); // no children for FPEA
 890   gMC->Gsatt("FECA","seen",0); // no children for FECA
 891   gMC->Gsatt("FWAA","seen",0); // no children for FWAA
 892   gMC->Gsatt("FAIA","seen",0); // no children for FAIA
 893
 894   // Level 2 of B074
 895   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 896   gMC->Gsatt("BTO2","seen",0);
 897
 898   // Level 2 of B075
 899   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 900   gMC->Gsatt("BTO3","seen",0);
 901
 902 // for others Level 5, cfr. previous settings
 903
 904   gMC->Gdopt("hide","on");
 905   gMC->Gdopt("shad","on");
 906   gMC->Gsatt("*", "fill", 5);
 907   gMC->SetClipBox(".");
 908   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 909   gMC->DefaultRange();
 910   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 911   gMC->Gdhead(1111,"TOF Strips V1");
 912   gMC->Gdman(18, 4, "MAN");
 913   gMC->Gdopt("hide","off");
 914 }
 915
 916 //_____________________________________________________________________________
 917 void AliTOFv3::CreateMaterials()
 918 {
 919   //
 920   // Define materials for the Time Of Flight
 921   //
 922   AliTOF::CreateMaterials();
 923 }
 924
 925 //_____________________________________________________________________________
 926 void AliTOFv3::Init()
 927 {
 928   //
 929   // Initialise the detector after the geometry has been defined
 930   //
 931   if(fDebug) {
 932     printf("%s: **************************************"
 933            "  TOF  "
 934            "**************************************\n",ClassName());
 935     printf("\n%s   Version 3 of TOF initialing, "
 936                 "TOF with holes for HMPID detector\n",ClassName());
 937   }
 938
 939   AliTOF::Init();
 940
 941   fIdFTOA = gMC->VolId("FTOA");
 942   fIdFTOB = gMC->VolId("FTOB");
 943   fIdFTOC = gMC->VolId("FTOC");
 944   fIdFLTA = gMC->VolId("FLTA");
 945   fIdFLTB = gMC->VolId("FLTB");
 946   fIdFLTC = gMC->VolId("FLTC");
 947
 948  if(fDebug) {
 949     printf("%s: **************************************"
 950            "  TOF  "
 951            "**************************************\n",ClassName());
 952  }
 953 }
 954
 955 //_____________________________________________________________________________
 956 void AliTOFv3::StepManager()
 957 {
 958   //
 959   // Procedure called at each step in the Time Of Flight
 960   //
 961   TLorentzVector mom, pos;
 962   Float_t xm[3],pm[3],xpad[3],ppad[3];
 963   Float_t hits[13],phi,phid,z;
 964   Int_t   vol[5];
 965   Int_t   sector, plate, padx, padz, strip;
 966   Int_t   copy, padzid, padxid, stripid, i;
 967   Int_t   *idtmed = fIdtmed->GetArray()-499;
 968   Float_t incidenceAngle;
 969
 970   if(gMC->CurrentMedium()==idtmed[513] &&
 971      gMC->IsTrackEntering() && gMC->TrackCharge()
 972      && gMC->CurrentVolID(copy)==fIdSens)
 973   {
 974     // getting information about hit volumes
 975
 976     padzid=gMC->CurrentVolOffID(2,copy);
 977     padz=copy;
 978
 979     padxid=gMC->CurrentVolOffID(1,copy);
 980     padx=copy;
 981
 982     stripid=gMC->CurrentVolOffID(4,copy);
 983     strip=copy;
 984
 985     gMC->TrackPosition(pos);
 986     gMC->TrackMomentum(mom);
 987
 988 //    Double_t NormPos=1./pos.Rho();
 989     Double_t normMom=1./mom.Rho();
 990
 991 //  getting the cohordinates in pad ref system
 992     xm[0] = (Float_t)pos.X();
 993     xm[1] = (Float_t)pos.Y();
 994     xm[2] = (Float_t)pos.Z();
 995
 996     pm[0] = (Float_t)mom.X()*normMom;
 997     pm[1] = (Float_t)mom.Y()*normMom;
 998     pm[2] = (Float_t)mom.Z()*normMom;
 999
1000     gMC->Gmtod(xm,xpad,1);
1001     gMC->Gmtod(pm,ppad,2);
1002
1003     incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1004
1005     z = pos[2];
1006
1007     plate = 0;
1008     if (TMath::Abs(z) <=  fZlenA*0.5)  plate = 2; //3; // AdC
1009     if (z < (fZlenA*0.5+fZlenB) &&
1010         z >  fZlenA*0.5)               plate = 1; //4; // AdC
1011     if (z >-(fZlenA*0.5+fZlenB) &&
1012         z < -fZlenA*0.5)               plate = 3; //2; // AdC
1013     if (z > (fZlenA*0.5+fZlenB))       plate = 0; //5; // AdC
1014     if (z <-(fZlenA*0.5+fZlenB))       plate = 4; //1; // AdC
1015
1016     if (plate==0) strip=AliTOFConstants::fgkNStripC-strip; // AdC
1017     else if (plate==1) strip=AliTOFConstants::fgkNStripB-strip; // AdC
1018     else strip--; // AdC
1019
1020     if (z<=0.) padx=AliTOFConstants::fgkNpadX-padx; // AdC
1021     else padx--; // AdC
1022
1023     if (plate==3 || plate==4) padz=AliTOFConstants::fgkNpadZ-padz; // AdC
1024     else padz--; // AdC
1025
1026     phi = pos.Phi();
1027     if (phi>=0.) phid = phi*kRaddeg; //+180.; // AdC
1028     else phid = phi*kRaddeg + 360.; // AdC
1029     sector = Int_t (phid/20.);
1030     //sector++; // AdC
1031
1032     for(i=0;i<3;++i) {
1033       hits[i]   = pos[i];
1034       hits[i+3] = pm[i];
1035     }
1036
1037     hits[6] = mom.Rho();
1038     hits[7] = pos[3];
1039     hits[8] = xpad[0];
1040     hits[9] = xpad[1];
1041     hits[10]= xpad[2];
1042     hits[11]= incidenceAngle;
1043     hits[12]= gMC->Edep();
1044
1045     vol[0]= sector;
1046     vol[1]= plate;
1047     vol[2]= strip;
1048     vol[3]= padx;
1049     vol[4]= padz;
1050
1051     AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
1052   }
1053 }