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