TOF/AliTOFv1.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 1 of the Time Of Flight    //
  21 //  detector.                                                                //
  22 //                                                                           //
  23 //  VERSION WITH 5 MODULES AND TILTED STRIPS                                 //
  24 //                                                                           //
  25 //  HOLES FOR PHOS 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/AliTOFv1Class.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 "AliMagF.h"
  58 #include "AliRun.h"
  59 #include "AliTOFv1.h"
  60 #include "AliTOFConstants.h" // AdC
  61 #include "AliMC.h"
  62
  63 ClassImp(AliTOFv1)
  64
  65 //_____________________________________________________________________________
  66 AliTOFv1::AliTOFv1()
  67 {
  68   //
  69   // Default constructor
  70   //
  71 }
  72
  73 //_____________________________________________________________________________
  74 AliTOFv1::AliTOFv1(const char *name, const char *title)
  75         : AliTOF(name,title)
  76 {
  77   //
  78   // Standard constructor
  79   //
  80   //
  81   // Check that FRAME is there otherwise we have no place where to
  82   // put TOF
  83   AliModule* frame=gAlice->GetModule("FRAME");
  84   if(!frame) {
  85     Error("Ctor","TOF needs FRAME to be present\n");
  86     exit(1);
  87   } else
  88     if(frame->IsVersion()!=1) {
  89       Error("Ctor","FRAME version 1 needed with this version of TOF\n");
  90       exit(1);
  91     }
  92 }
  93
  94 //_____________________________________________________________________________
  95 void AliTOFv1::CreateGeometry()
  96 {
  97   //
  98   // Create geometry for Time Of Flight version 0
  99   //
 100   //Begin_Html
 101   /*
 102     <img src="picts/AliTOFv1.gif">
 103   */
 104   //End_Html
 105   //
 106   // Creates common geometry
 107   //
 108   AliTOF::CreateGeometry();
 109 }
 110
 111 //_____________________________________________________________________________
 112 void AliTOFv1::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   gMC->Gspos("FTOB", 1, "BTO3", 0,  zcor2, 0, idrotm[0], "ONLY");
 158   gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
 159
 160   gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3,  0, idrotm[0], "ONLY");
 161   gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3,  0, idrotm[0], "ONLY");
 162
 163   Float_t db = 0.5;//cm
 164   Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
 165
 166   xFLT = fStripLn;
 167   yFLT = ytof;
 168   zFLTA = zlenA;
 169   zFLTB = zlenB;
 170   zFLTC = zlenC;
 171
 172   xFST = xFLT-fDeadBndX*2;//cm
 173
 174   // Sizes of MRPC pads
 175
 176   Float_t yPad = 0.505;//cm
 177
 178   // Large not sensitive volumes with Insensitive Freon
 179   par[0] = xFLT*0.5;
 180   par[1] = yFLT*0.5;
 181
 182   if(fDebug) cout << ClassName()
 183                   << ": ************************* TOF geometry **************************"
 184                   <<endl;
 185
 186   par[2] = (zFLTA *0.5);
 187   gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 188   gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
 189
 190   par[2] = (zFLTB * 0.5);
 191   gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 192   gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
 193
 194   par[2] = (zFLTC * 0.5);
 195   gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 196   gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
 197
 198   ///// Layers of Aluminum before and after detector /////
 199   ///// Aluminum Box for Modules (1.8 mm thickness)  /////
 200   ///// lateral walls not simulated for the time being
 201   //const Float_t khAlWall = 0.18;
 202   // fp to be checked
 203   const Float_t khAlWall = 0.11;
 204   par[0] = xFLT*0.5;
 205   par[1] = khAlWall/2.;//cm
 206   ycoor = -yFLT/2 + par[1];
 207   par[2] = (zFLTA *0.5);
 208   gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
 209   gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
 210   gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
 211   par[2] = (zFLTB *0.5);
 212   gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
 213   gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
 214   gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
 215   par[2] = (zFLTC *0.5);
 216   gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
 217   gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
 218   gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
 219
 220   ///////////////// Detector itself //////////////////////
 221
 222   const Float_t  kdeadBound  =  fDeadBndZ; //cm non-sensitive between the pad edge
 223   //and the boundary of the strip
 224   const Int_t    knx    = fNpadX;          // number of pads along x
 225   const Int_t    knz    = fNpadZ;          // number of pads along z
 226   const Float_t  kspace = fSpace;            //cm distance from the front plate of the box
 227
 228   Float_t zSenStrip  = fZpad*fNpadZ;//cm
 229   Float_t stripWidth = zSenStrip + 2*kdeadBound;
 230
 231   par[0] = xFLT*0.5;
 232   par[1] = yPad*0.5;
 233   par[2] = stripWidth*0.5;
 234
 235   // new description for strip volume -double stack strip-
 236   // -- all constants are expressed in cm
 237   // heigth of different layers
 238   const Float_t khhony = 0.8     ;   // heigth of HONY  Layer
 239   const Float_t khpcby = 0.08    ;   // heigth of PCB   Layer
 240   const Float_t khmyly = 0.035   ;   // heigth of MYLAR Layer
 241   const Float_t khgraphy = 0.02  ;   // heigth of GRAPHITE Layer
 242   const Float_t khglasseiy = 0.135;   // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
 243   const Float_t khsensmy = 0.11  ;   // heigth of Sensitive Freon Mixture
 244   const Float_t kwsensmz = 2*3.5 ;   // cm
 245   const Float_t klsensmx = 48*2.5;   // cm
 246   const Float_t kwpadz = 3.5;   // cm z dimension of the FPAD volume
 247   const Float_t klpadx = 2.5;   // cm x dimension of the FPAD volume
 248
 249   // heigth of the FSTR Volume (the strip volume)
 250   const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
 251   // width  of the FSTR Volume (the strip volume)
 252   const Float_t kwstripz = 10.;
 253   // length of the FSTR Volume (the strip volume)
 254   const Float_t klstripx = 122.;
 255
 256   Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
 257   // coordinates of the strip center in the strip reference frame; used for positioning
 258   // internal strip volumes
 259   Float_t posfp[3]={0.,0.,0.};
 260
 261
 262   // FSTR volume definition and filling this volume with non sensitive Gas Mixture
 263   gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
 264   //-- HONY Layer definition
 265   //  parfp[0] = -1;
 266   parfp[1] = khhony*0.5;
 267   //  parfp[2] = -1;
 268   gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
 269   // positioning 2 HONY Layers on FSTR volume
 270
 271   posfp[1]=-khstripy*0.5+parfp[1];
 272   gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 273   gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 274
 275   //-- PCB Layer definition
 276   parfp[1] = khpcby*0.5;
 277   gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
 278   // positioning 2 PCB Layers on FSTR volume
 279   posfp[1]=-khstripy*0.5+khhony+parfp[1];
 280   gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 281   gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 282   // positioning the central PCB layer
 283   gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
 284
 285
 286
 287   //-- MYLAR Layer definition
 288   parfp[1] = khmyly*0.5;
 289   gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
 290   // positioning 2 MYLAR Layers on FSTR volume
 291   posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
 292   gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 293   gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 294   // adding further 2 MYLAR Layers on FSTR volume
 295   posfp[1] = khpcby*0.5+parfp[1];
 296   gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 297   gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 298
 299
 300   //-- Graphite Layer definition
 301   parfp[1] = khgraphy*0.5;
 302   gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
 303   // positioning 2 Graphite Layers on FSTR volume
 304   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
 305   gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 306   gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 307   // adding further 2 Graphite Layers on FSTR volume
 308   posfp[1] = khpcby*0.5+khmyly+parfp[1];
 309   gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 310   gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 311
 312
 313   //-- Glass (EXT. +Semi INT.) Layer definition
 314   parfp[1] = khglasseiy*0.5;
 315   gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
 316   // positioning 2 Glass Layers on FSTR volume
 317   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
 318   gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 319   gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 320   // adding further 2 Glass Layers on FSTR volume
 321   posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
 322   gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 323   gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 324
 325
 326   //-- Sensitive Mixture Layer definition
 327   parfp[0] = klsensmx*0.5;
 328   parfp[1] = khsensmy*0.5;
 329   parfp[2] = kwsensmz*0.5;
 330   gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
 331   gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
 332   // positioning 2 gas Layers on FSTR volume
 333   // the upper is insensitive freon
 334   // while the remaining is sensitive
 335   posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
 336   gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
 337   gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
 338
 339   // dividing FSEN along z in knz=2 and along x in knx=48
 340   gMC->Gsdvn("FSEZ","FSEN",knz,3);
 341   gMC->Gsdvn("FSEX","FSEZ",knx,1);
 342
 343   // FPAD volume definition
 344   parfp[0] = klpadx*0.5;
 345   parfp[1] = khsensmy*0.5;
 346   parfp[2] = kwpadz*0.5;
 347   gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
 348   // positioning the FPAD volumes on previous divisions
 349   gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
 350
 351   ////  Positioning the Strips  (FSTR) in the FLT volumes  /////
 352
 353   // Plate A (Central)
 354
 355   Float_t t = zFLTC+zFLTB+zFLTA*0.5+ 2*db;//Half Width of Barrel
 356
 357   Float_t gap  = fGapA+0.5; //cm  updated distance between the strip axis
 358   Float_t zpos = 0;
 359   Float_t ang  = 0;
 360   Int_t j=1; // AdC
 361   nrot  = 0;
 362   zcoor = 0;
 363   ycoor = -14.5 + kspace ; //2 cm over front plate
 364
 365   AliMatrix (idrotm[0],  90.,  0.,90.,90.,0., 90.);
 366
 367   Int_t centerLoc= (Int_t)(fNStripA/2.) + 1; // AdC
 368
 369   //gMC->Gspos("FSTR",j,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY");
 370   gMC->Gspos("FSTR",centerLoc,"FLTA",0.,ycoor, 0.,idrotm[0],"ONLY"); // AdC
 371   if(fDebug>=1) {
 372     printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 373     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 374   }
 375   zcoor -= zSenStrip;
 376   //j++; // AdC
 377   Int_t upDown = -1; // upDown=-1 -> Upper strip
 378                      // upDown=+1 -> Lower strip
 379   do{
 380     ang = atan(zcoor/radius);
 381     ang *= kRaddeg;
 382     AliMatrix (idrotm[nrot],  90.,  0.,90.-ang,90.,-ang, 90.);
 383     AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
 384     ang /= kRaddeg;
 385     ycoor = -14.5+ kspace; //2 cm over front plate
 386     ycoor += (1-(upDown+1)/2)*gap;
 387     //gMC->Gspos("FSTR",j  ,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY");
 388     //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
 389     gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY"); // AdC
 390     gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
 391     if(fDebug>=1) {
 392       printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 393       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 394     }
 395     j++; //j += 2; // AdC
 396     upDown*= -1; // Alternate strips
 397     zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
 398       upDown*gap*TMath::Tan(ang)-
 399       (zSenStrip/2)/TMath::Cos(ang);
 400   } while (zcoor-(stripWidth/2)*TMath::Cos(ang)>-t+zFLTC+zFLTB+db*2);
 401
 402   zcoor = zcoor+(zSenStrip/2)/TMath::Cos(ang)+
 403     upDown*gap*TMath::Tan(ang)+
 404     (zSenStrip/2)/TMath::Cos(ang);
 405
 406   gap = fGapB;
 407   zcoor = zcoor-(zSenStrip/2)/TMath::Cos(ang)-
 408     upDown*gap*TMath::Tan(ang)-
 409     (zSenStrip/2)/TMath::Cos(ang);
 410
 411   ang = atan(zcoor/radius);
 412   ang *= kRaddeg;
 413   AliMatrix (idrotm[nrot],  90.,  0.,90.-ang,90.,-ang, 90.);
 414   AliMatrix (idrotm[nrot+1],90.,180.,90.+ang,90., ang, 90.);
 415   ang /= kRaddeg;
 416
 417   ycoor = -14.5+ kspace; //2 cm over front plate
 418   ycoor += (1-(upDown+1)/2)*gap;
 419   //gMC->Gspos("FSTR",j  ,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY");
 420   //gMC->Gspos("FSTR",j+1,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY");
 421   gMC->Gspos("FSTR",centerLoc-j,"FLTA",0.,ycoor, zcoor,idrotm[nrot],  "ONLY"); // AdC
 422   gMC->Gspos("FSTR",centerLoc+j,"FLTA",0.,ycoor,-zcoor,idrotm[nrot+1],"ONLY"); // AdC
 423   if(fDebug>=1) {
 424     printf("%s: %f,  St. %2i, Pl.3 ",ClassName(),ang*kRaddeg,j); // AdC
 425     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 426   }
 427   ycoor = -hTof/2.+ kspace;//2 cm over front plate
 428
 429   // Plate  B
 430
 431   nrot = 0;
 432   Int_t i=1; // AdC
 433   upDown = 1;
 434   Float_t deadRegion = 1.0;//cm
 435
 436   zpos = zcoor - (zSenStrip/2)/TMath::Cos(ang)-
 437     upDown*gap*TMath::Tan(ang)-
 438     (zSenStrip/2)/TMath::Cos(ang)-
 439     deadRegion/TMath::Cos(ang);
 440
 441   ang = atan(zpos/radius);
 442   ang *= kRaddeg;
 443   AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 444   ang /= kRaddeg;
 445   ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
 446   ycoor += (1-(upDown+1)/2)*gap;
 447   zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
 448   gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 449   if(fDebug>=1) {
 450     printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 451     printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 452   }
 453   i++;
 454   upDown*=-1;
 455
 456   do {
 457     zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)-
 458       upDown*gap*TMath::Tan(ang)-
 459       (zSenStrip/2)/TMath::Cos(ang);
 460     ang = atan(zpos/radius);
 461     ang *= kRaddeg;
 462     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 463     ang /= kRaddeg;
 464     Float_t deltaSpaceinB=-0.5; // [cm] to avoid overlaps with the end of freon frame
 465     Float_t deltaGapinB=0.5;    // [cm] to avoid overlaps in between initial strips
 466     ycoor = -hTof*0.5+ kspace+deltaSpaceinB ; //2 cm over front plate
 467     ycoor += (1-(upDown+1)/2)*(gap+deltaGapinB);
 468     zcoor = zpos+(zFLTA*0.5+zFLTB*0.5+db); // Moves to the system of the modulus FLTB
 469     gMC->Gspos("FSTR",i, "FLTB", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 470     if(fDebug>=1) {
 471       printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 472       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 473     }
 474     upDown*=-1;
 475     i++;
 476   } while (TMath::Abs(ang*kRaddeg)<22.5);
 477   //till we reach a tilting angle of 22.5 degrees
 478
 479   ycoor = -hTof*0.5+ kspace ; //2 cm over front plate
 480   zpos = zpos - zSenStrip/TMath::Cos(ang);
 481   // this avoid overlaps in between outer strips in plate B
 482   Float_t deltaMovingUp=0.8;    // [cm]
 483   Float_t deltaMovingDown=-0.5; // [cm]
 484
 485   do {
 486     ang = atan(zpos/radius);
 487     ang *= kRaddeg;
 488     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 489     ang /= kRaddeg;
 490     zcoor = zpos+(zFLTB/2+zFLTA/2+db);
 491     gMC->Gspos("FSTR",i, "FLTB", 0., ycoor+deltaMovingDown+deltaMovingUp, zcoor,idrotm[nrot], "ONLY");
 492     deltaMovingUp+=0.8; // update delta moving toward the end of the plate
 493     zpos = zpos - zSenStrip/TMath::Cos(ang);
 494     if(fDebug>=1) {
 495       printf("%s: %f,  St. %2i, Pl.4 ",ClassName(),ang*kRaddeg,i);
 496       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 497     }
 498     i++;
 499
 500   }  while (zpos-stripWidth*0.5/TMath::Cos(ang)>-t+zFLTC+db);
 501
 502   // Plate  C
 503
 504   zpos = zpos + zSenStrip/TMath::Cos(ang);
 505
 506   zpos = zpos - (zSenStrip/2)/TMath::Cos(ang)+
 507     gap*TMath::Tan(ang)-
 508     (zSenStrip/2)/TMath::Cos(ang);
 509
 510   nrot = 0;
 511   i=0;
 512   Float_t deltaGap=-2.5; // [cm] update distance from strip center and plate
 513   ycoor= -hTof*0.5+kspace+gap+deltaGap;
 514
 515   do {
 516     i++;
 517     ang = atan(zpos/radius);
 518     ang *= kRaddeg;
 519     AliMatrix (idrotm[nrot], 90., 0., 90.-ang,90.,ang, 270.);
 520     ang /= kRaddeg;
 521     zcoor = zpos+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
 522     gMC->Gspos("FSTR",i, "FLTC", 0., ycoor, zcoor,idrotm[nrot], "ONLY");
 523     if(fDebug>=1) {
 524       printf("%s: %f,  St. %2i, Pl.5 ",ClassName(),ang*kRaddeg,i);
 525       printf("y = %f,  z = %f, zpos = %f \n",ycoor,zcoor,zpos);
 526     }
 527     zpos = zpos - zSenStrip/TMath::Cos(ang);
 528   }  while (zpos-stripWidth*TMath::Cos(ang)*0.5>-t);
 529
 530
 531   ////////// Layers after strips /////////////////
 532   // Al Layer thickness (2.3mm) factor 0.7
 533
 534   Float_t overSpace = fOverSpc;//cm
 535
 536   par[0] = xFLT*0.5;
 537   par[1] = 0.115*0.7; // factor 0.7
 538   par[2] = (zFLTA *0.5);
 539   ycoor = -yFLT/2 + overSpace + par[1];
 540   gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
 541   gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 542   par[2] = (zFLTB *0.5);
 543   gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
 544   gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 545   par[2] = (zFLTC *0.5);
 546   gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
 547   gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 548
 549
 550   // plexiglass thickness: 1.5 mm ; factor 0.3
 551   ycoor += par[1];
 552   par[0] = xFLT*0.5;
 553   par[1] = 0.075*0.3; // factor 0.3
 554   par[2] = (zFLTA *0.5);
 555   ycoor += par[1];
 556   gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
 557   gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 558   par[2] = (zFLTB *0.5);
 559   gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
 560   gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 561   par[2] = (zFLTC *0.5);
 562   gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
 563   gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 564
 565   // frame of Air
 566   ycoor += par[1];
 567   par[0] = xFLT*0.5;
 568   par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
 569   par[2] = (zFLTA *0.5);
 570   ycoor += par[1];
 571   gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
 572   gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 573   par[2] = (zFLTB *0.5);
 574   gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
 575   gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 576   par[2] = (zFLTC *0.5);
 577   gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
 578   gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 579
 580
 581   // start with cards and cooling tubes
 582   // finally, cards, cooling tubes and layer for thermal dispersion
 583   // 3 volumes
 584   // card volume definition
 585
 586   // see GEOM200 in GEANT manual
 587   AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
 588
 589   Float_t cardpar[3];
 590   cardpar[0]= 61.;
 591   cardpar[1]= 5.;
 592   cardpar[2]= 0.1;
 593   gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
 594   //alu plate volume definition
 595   cardpar[1]= 3.5;
 596   cardpar[2]= 0.05;
 597   gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
 598
 599
 600   // central module positioning (FAIA)
 601   Float_t cardpos[3], aplpos2, stepforcardA=6.625;
 602   cardpos[0]= 0.;
 603   cardpos[1]= -0.5;
 604   cardpos[2]= -53.;
 605   Float_t aplpos1 = -2.;
 606   Int_t icard;
 607   for (icard=0; icard<15; ++icard) {
 608     cardpos[2]= cardpos[2]+stepforcardA;
 609     aplpos2 = cardpos[2]+0.15;
 610     gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 611     gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 612
 613   }
 614
 615
 616   // intermediate module positioning (FAIB)
 617   Float_t stepforcardB= 7.05;
 618   cardpos[2]= -70.5;
 619   for (icard=0; icard<19; ++icard) {
 620     cardpos[2]= cardpos[2]+stepforcardB;
 621     aplpos2 = cardpos[2]+0.15;
 622     gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 623     gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 624   }
 625
 626
 627   // outer module positioning (FAIC)
 628   Float_t stepforcardC= 8.45238;
 629   cardpos[2]= -88.75;
 630   for (icard=0; icard<20; ++icard) {
 631     cardpos[2]= cardpos[2]+stepforcardC;
 632     aplpos2 = cardpos[2]+0.15;
 633     gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 634     gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 635   }
 636
 637   // tube volume definition
 638   Float_t tubepar[3];
 639   tubepar[0]= 0.;
 640   tubepar[1]= 0.4;
 641   tubepar[2]= 61.;
 642   gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
 643   tubepar[0]= 0.;
 644   tubepar[1]= 0.35;
 645   tubepar[2]= 61.;
 646   gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
 647   // positioning water tube into the steel one
 648   gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
 649
 650
 651   // rotation matrix
 652   AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
 653   // central module positioning (FAIA)
 654   Float_t tubepos[3], tdis=0.6;
 655   tubepos[0]= 0.;
 656   tubepos[1]= cardpos[1];
 657   tubepos[2]= -53.+tdis;
 658   //  tub1pos = 5.;
 659   Int_t itub;
 660   for (itub=0; itub<15; ++itub) {
 661     tubepos[2]= tubepos[2]+stepforcardA;
 662     gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 663                "ONLY");
 664   }
 665
 666
 667   // intermediate module positioning (FAIB)
 668   tubepos[2]= -70.5+tdis;
 669   for (itub=0; itub<19; ++itub) {
 670     tubepos[2]= tubepos[2]+stepforcardB;
 671     gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 672                "ONLY");
 673   }
 674
 675   // outer module positioning (FAIC)
 676   tubepos[2]= -88.75+tdis;
 677   for (itub=0; itub<20; ++itub) {
 678     tubepos[2]= tubepos[2]+stepforcardC;
 679     gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 680                "ONLY");
 681   }
 682
 683 }
 684
 685 //_____________________________________________________________________________
 686 void AliTOFv1::DrawModule() const
 687 {
 688   //
 689   // Draw a shaded view of the Time Of Flight version 1
 690   //
 691   // Set everything unseen
 692   gMC->Gsatt("*", "seen", -1);
 693   //
 694   // Set ALIC mother transparent
 695   gMC->Gsatt("ALIC","SEEN",0);
 696   //
 697   // Set the volumes visible
 698   gMC->Gsatt("ALIC","SEEN",0);
 699
 700   gMC->Gsatt("FTOA","SEEN",1);
 701   gMC->Gsatt("FTOB","SEEN",1);
 702   gMC->Gsatt("FTOC","SEEN",1);
 703   gMC->Gsatt("FLTA","SEEN",1);
 704   gMC->Gsatt("FLTB","SEEN",1);
 705   gMC->Gsatt("FLTC","SEEN",1);
 706   gMC->Gsatt("FPLA","SEEN",1);
 707   gMC->Gsatt("FPLB","SEEN",1);
 708   gMC->Gsatt("FPLC","SEEN",1);
 709   gMC->Gsatt("FSTR","SEEN",1);
 710   gMC->Gsatt("FPEA","SEEN",1);
 711   gMC->Gsatt("FPEB","SEEN",1);
 712   gMC->Gsatt("FPEC","SEEN",1);
 713
 714   gMC->Gsatt("FLZ1","SEEN",0);
 715   gMC->Gsatt("FLZ2","SEEN",0);
 716   gMC->Gsatt("FLZ3","SEEN",0);
 717   gMC->Gsatt("FLX1","SEEN",0);
 718   gMC->Gsatt("FLX2","SEEN",0);
 719   gMC->Gsatt("FLX3","SEEN",0);
 720   gMC->Gsatt("FPAD","SEEN",0);
 721
 722   gMC->Gdopt("hide", "on");
 723   gMC->Gdopt("shad", "on");
 724   gMC->Gsatt("*", "fill", 7);
 725   gMC->SetClipBox(".");
 726   gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
 727   gMC->DefaultRange();
 728   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
 729   gMC->Gdhead(1111, "Time Of Flight");
 730   gMC->Gdman(18, 4, "MAN");
 731   gMC->Gdopt("hide","off");
 732 }
 733 //_____________________________________________________________________________
 734 void AliTOFv1::DrawDetectorModules()
 735 {
 736 //
 737 // Draw a shaded view of the TOF detector version 1
 738 //
 739
 740 //Set ALIC mother transparent
 741  gMC->Gsatt("ALIC","SEEN",0);
 742
 743 //
 744 //Set volumes visible
 745 //
 746 //=====> Level 1
 747   // Level 1 for TOF volumes
 748   gMC->Gsatt("B077","seen",0);
 749
 750
 751 //==========> Level 2
 752   // Level 2
 753   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 754   gMC->Gsatt("B071","seen",0);
 755   gMC->Gsatt("B074","seen",0);
 756   gMC->Gsatt("B075","seen",0);
 757   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 758
 759
 760   // Level 2 of B071
 761   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 762   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 763   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 764   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 765   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 766   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 767   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 768   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 769   gMC->Gsatt("BTO1","seen",0);
 770
 771
 772   // Level 2 of B074
 773   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 774   gMC->Gsatt("BTO2","seen",0);
 775
 776   // Level 2 of B075
 777   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 778   gMC->Gsatt("BTO3","seen",0);
 779
 780 // ==================> Level 3
 781   // Level 3 of B071 / Level 2 of BTO1
 782   gMC->Gsatt("FTOC","seen",-2);
 783   gMC->Gsatt("FTOB","seen",-2);
 784   gMC->Gsatt("FTOA","seen",-2);
 785
 786   // Level 3 of B074 / Level 2 of BTO2
 787   // -> cfr previous settings
 788
 789   // Level 3 of B075 / Level 2 of BTO3
 790   // -> cfr previous settings
 791
 792   gMC->Gdopt("hide","on");
 793   gMC->Gdopt("shad","on");
 794   gMC->Gsatt("*", "fill", 5);
 795   gMC->SetClipBox(".");
 796   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 797   gMC->DefaultRange();
 798   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 799   gMC->Gdhead(1111,"TOF detector V1");
 800   gMC->Gdman(18, 4, "MAN");
 801   gMC->Gdopt("hide","off");
 802 }
 803
 804 //_____________________________________________________________________________
 805 void AliTOFv1::DrawDetectorStrips()
 806 {
 807 //
 808 // Draw a shaded view of the TOF strips for version 1
 809 //
 810
 811 //Set ALIC mother transparent
 812  gMC->Gsatt("ALIC","SEEN",0);
 813
 814 //
 815 //Set volumes visible
 816 //=====> Level 1
 817   // Level 1 for TOF volumes
 818   gMC->Gsatt("B077","seen",0);
 819
 820 //==========> Level 2
 821   // Level 2
 822   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 823   gMC->Gsatt("B071","seen",0);
 824   gMC->Gsatt("B074","seen",0);
 825   gMC->Gsatt("B075","seen",0);
 826   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 827
 828   // Level 2 of B071
 829   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 830   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 831   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 832   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 833   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 834   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 835   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 836   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 837   gMC->Gsatt("BTO1","seen",0);
 838
 839 // ==================> Level 3
 840   // Level 3 of B071 / Level 2 of BTO1
 841   gMC->Gsatt("FTOC","seen",0);
 842   gMC->Gsatt("FTOB","seen",0);
 843   gMC->Gsatt("FTOA","seen",0);
 844
 845   // Level 3 of B074 / Level 2 of BTO2
 846   // -> cfr previous settings
 847
 848   // Level 3 of B075 / Level 2 of BTO3
 849   // -> cfr previous settings
 850
 851
 852 // ==========================> Level 4
 853   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
 854   gMC->Gsatt("FLTC","seen",0);
 855   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
 856   gMC->Gsatt("FLTB","seen",0);
 857   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
 858   gMC->Gsatt("FLTA","seen",0);
 859
 860   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
 861   // -> cfr previous settings
 862   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
 863   // -> cfr previous settings
 864
 865   // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
 866   // -> cfr previous settings
 867
 868 //======================================> Level 5
 869   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
 870   gMC->Gsatt("FALC","seen",0); // no children for FALC
 871   gMC->Gsatt("FSTR","seen",-2);
 872   gMC->Gsatt("FPEC","seen",0); // no children for FPEC
 873   gMC->Gsatt("FECC","seen",0); // no children for FECC
 874   gMC->Gsatt("FWAC","seen",0); // no children for FWAC
 875   gMC->Gsatt("FAIC","seen",0); // no children for FAIC
 876
 877   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
 878   gMC->Gsatt("FALB","seen",0); // no children for FALB
 879 //-->  gMC->Gsatt("FSTR","seen",-2);
 880
 881
 882   // -> cfr previous settings
 883   gMC->Gsatt("FPEB","seen",0); // no children for FPEB
 884   gMC->Gsatt("FECB","seen",0); // no children for FECB
 885   gMC->Gsatt("FWAB","seen",0); // no children for FWAB
 886   gMC->Gsatt("FAIB","seen",0); // no children for FAIB
 887
 888   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
 889   gMC->Gsatt("FALA","seen",0); // no children for FALB
 890 //-->  gMC->Gsatt("FSTR","seen",-2);
 891   // -> cfr previous settings
 892   gMC->Gsatt("FPEA","seen",0); // no children for FPEA
 893   gMC->Gsatt("FECA","seen",0); // no children for FECA
 894   gMC->Gsatt("FWAA","seen",0); // no children for FWAA
 895   gMC->Gsatt("FAIA","seen",0); // no children for FAIA
 896
 897   // Level 2 of B074
 898   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 899   gMC->Gsatt("BTO2","seen",0);
 900
 901   // Level 2 of B075
 902   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 903   gMC->Gsatt("BTO3","seen",0);
 904
 905 // for others Level 5, cfr. previous settings
 906
 907   gMC->Gdopt("hide","on");
 908   gMC->Gdopt("shad","on");
 909   gMC->Gsatt("*", "fill", 5);
 910   gMC->SetClipBox(".");
 911   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 912   gMC->DefaultRange();
 913   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 914   gMC->Gdhead(1111,"TOF Strips V1");
 915   gMC->Gdman(18, 4, "MAN");
 916   gMC->Gdopt("hide","off");
 917 }
 918
 919 //_____________________________________________________________________________
 920 void AliTOFv1::CreateMaterials()
 921 {
 922   //
 923   // Define materials for the Time Of Flight
 924   //
 925   AliTOF::CreateMaterials();
 926 }
 927
 928 //_____________________________________________________________________________
 929 void AliTOFv1::Init()
 930 {
 931   //
 932   // Initialise the detector after the geometry has been defined
 933   //
 934   printf("**************************************"
 935          "  TOF  "
 936          "**************************************\n");
 937   printf("\n   Version 1 of TOF initialing, "
 938               "TOF with holes for PHOS detector\n");
 939
 940   AliTOF::Init();
 941
 942   fIdFTOA = gMC->VolId("FTOA");
 943   fIdFTOB = gMC->VolId("FTOB");
 944   fIdFTOC = gMC->VolId("FTOC");
 945   fIdFLTA = gMC->VolId("FLTA");
 946   fIdFLTB = gMC->VolId("FLTB");
 947   fIdFLTC = gMC->VolId("FLTC");
 948
 949   printf("**************************************"
 950          "  TOF  "
 951          "**************************************\n");
 952 }
 953
 954 //_____________________________________________________________________________
 955 void AliTOFv1::StepManager()
 956 {
 957   //
 958   // Procedure called at each step in the Time Of Flight
 959   //
 960   TLorentzVector mom, pos;
 961   Float_t xm[3],pm[3],xpad[3],ppad[3];
 962   Float_t hits[13],phi,phid,z;
 963   Int_t   vol[5];
 964   Int_t   sector, plate, padx, padz, strip;
 965   Int_t   copy, padzid, padxid, stripid, i;
 966   Int_t   *idtmed = fIdtmed->GetArray()-499;
 967   Float_t incidenceAngle;
 968
 969   if(gMC->CurrentMedium()==idtmed[513] &&
 970      gMC->IsTrackEntering() && gMC->TrackCharge()
 971      && gMC->CurrentVolID(copy)==fIdSens)
 972   {
 973     // getting information about hit volumes
 974
 975     padzid=gMC->CurrentVolOffID(2,copy);
 976     padz=copy;
 977
 978     padxid=gMC->CurrentVolOffID(1,copy);
 979     padx=copy;
 980
 981     stripid=gMC->CurrentVolOffID(4,copy);
 982     strip=copy;
 983
 984     gMC->TrackPosition(pos);
 985     gMC->TrackMomentum(mom);
 986
 987 //    Double_t NormPos=1./pos.Rho();
 988     Double_t normMom=1./mom.Rho();
 989
 990 //  getting the cohordinates in pad ref system
 991     xm[0] = (Float_t)pos.X();
 992     xm[1] = (Float_t)pos.Y();
 993     xm[2] = (Float_t)pos.Z();
 994
 995     pm[0] = (Float_t)mom.X()*normMom;
 996     pm[1] = (Float_t)mom.Y()*normMom;
 997     pm[2] = (Float_t)mom.Z()*normMom;
 998
 999     gMC->Gmtod(xm,xpad,1);
1000     gMC->Gmtod(pm,ppad,2);
1001
1002     if(ppad[1]>1.) ppad[1]=1.;
1003     if(ppad[1]<-1.) ppad[1]=-1.;
1004
1005     incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
1006
1007     z = pos[2];
1008
1009     plate = 0;
1010     if (TMath::Abs(z) <=  fZlenA*0.5)  plate = 2; //3; // AdC
1011     if (z < (fZlenA*0.5+fZlenB) &&
1012         z >  fZlenA*0.5)               plate = 1; //4; // AdC
1013     if (z >-(fZlenA*0.5+fZlenB) &&
1014         z < -fZlenA*0.5)               plate = 3; //2; // AdC
1015     if (z > (fZlenA*0.5+fZlenB))       plate = 0; //5; // AdC
1016     if (z <-(fZlenA*0.5+fZlenB))       plate = 4; //1; // AdC
1017
1018     if (plate==0) strip=AliTOFConstants::fgkNStripC-strip; // AdC
1019     else if (plate==1) strip=AliTOFConstants::fgkNStripB-strip; // AdC
1020     else strip--; // AdC
1021
1022     if (z<=0.) padx=AliTOFConstants::fgkNpadX-padx; // AdC
1023     else padx--; // AdC
1024
1025     if (plate==3 || plate==4) padz=AliTOFConstants::fgkNpadZ-padz; // AdC
1026     else padz--; // AdC
1027
1028     phi = pos.Phi();
1029     if (phi>=0.) phid = phi*kRaddeg; //+180.; // AdC
1030     else phid = phi*kRaddeg + 360.; // AdC
1031     sector = Int_t (phid/20.);
1032     //sector++; // AdC
1033
1034     for(i=0;i<3;++i) {
1035       hits[i]   = pos[i];
1036       hits[i+3] = pm[i];
1037     }
1038
1039     hits[6] = mom.Rho();
1040     hits[7] = pos[3];
1041     hits[8] = xpad[0];
1042     hits[9] = xpad[1];
1043     hits[10]= xpad[2];
1044     hits[11]= incidenceAngle;
1045     hits[12]= gMC->Edep();
1046
1047     vol[0]= sector;
1048     vol[1]= plate;
1049     vol[2]= strip;
1050     vol[3]= padx;
1051     vol[4]= padz;
1052
1053     AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
1054   }
1055 }
1056