TOF/AliTOFv4T0.cxx

   1 /**************************************************************************
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   3  *                                                                        *
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  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 //  This class contains the functions for version 4 of the Time Of Flight    //
  21 //  detector.                                                                //
  22 //                                                                           //
  23 //  VERSION WITH 5 MODULES AND TILTED STRIPS                                 //
  24 //                                                                           //
  25 //   FULL COVERAGE VERSION +OPTION for PHOS holes                            //
  26 //                                                                           //
  27 //   Author:                                                                 //
  28 //   Fabrizio Pierella                                                       //
  29 //   University of Bologna - Italy                                           //
  30 //                                                                           //
  31 //                                                                           //
  32 //Begin_Html                                                                 //
  33 /*                                                                           //
  34 <img src="picts/AliTOFv4T0Class.gif">                                        //
  35 */                                                                           //
  36 //End_Html                                                                   //
  37 //                                                                           //
  38 ///////////////////////////////////////////////////////////////////////////////
  39
  40 #include <Riostream.h>
  41 #include <stdlib.h>
  42 #include "TVirtualMC.h"
  43
  44 #include <TBRIK.h>
  45 #include <TGeometry.h>
  46 #include <TLorentzVector.h>
  47 #include <TNode.h>
  48 #include <TObject.h>
  49 #include <TVirtualMC.h>
  50
  51 #include "AliConst.h"
  52 #include "AliRun.h"
  53 #include "AliTOFv4T0.h"
  54 #include "AliTOFGeometry.h"
  55 #include "AliMC.h"
  56
  57 ClassImp(AliTOFv4T0)
  58
  59 //_____________________________________________________________________________
  60 AliTOFv4T0::AliTOFv4T0()
  61 {
  62   //
  63   // Default constructor
  64   //
  65 }
  66
  67 //_____________________________________________________________________________
  68 AliTOFv4T0::AliTOFv4T0(const char *name, const char *title)
  69         : AliTOF(name,title,"tzero")
  70 {
  71   //
  72   // Standard constructor
  73   //
  74   //
  75   // Check that FRAME is there otherwise we have no place where to
  76   // put TOF
  77
  78
  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
  85     if (fTOFGeometry) delete fTOFGeometry;
  86     fTOFGeometry = new AliTOFGeometry();
  87
  88     if(frame->IsVersion()==1) {
  89       cout << " Frame version " << frame->IsVersion() << endl;
  90       cout << " Full Coverage for TOF" << endl;
  91       fTOFHoles=false;}
  92     else {
  93       cout << " Frame version " << frame->IsVersion() << endl;
  94       cout << " TOF with Holes for PHOS " << endl;
  95       fTOFHoles=true;}
  96   }
  97   fTOFGeometry->SetHoles(fTOFHoles);
  98 }
  99
 100 //____________________________________________________________________________
 101 void AliTOFv4T0::BuildGeometry()
 102 {
 103   //
 104   // Build TOF ROOT geometry for the ALICE event display
 105   //
 106   TNode *node, *top;
 107   const int kColorTOF  = 27;
 108
 109   // Find top TNODE
 110   top = gAlice->GetGeometry()->GetNode("alice");
 111
 112   // Position the different copies
 113   const Float_t krTof  =(AliTOFGeometry::Rmax()+AliTOFGeometry::Rmin())/2;
 114   const Float_t khTof  = AliTOFGeometry::Rmax()-AliTOFGeometry::Rmin();
 115   const Int_t   kNTof  = AliTOFGeometry::NSectors();
 116   const Float_t kPi    = TMath::Pi();
 117   const Float_t kangle = 2*kPi/kNTof;
 118   Float_t ang;
 119
 120   // define offset for nodes
 121   Float_t zOffsetC = AliTOFGeometry::MaxhZtof() - AliTOFGeometry::ZlenC()*0.5;
 122   Float_t zOffsetB = AliTOFGeometry::MaxhZtof() - AliTOFGeometry::ZlenC() - AliTOFGeometry::ZlenB()*0.5;
 123   Float_t zOffsetA = 0.;
 124   // Define TOF basic volume
 125
 126   char nodeName0[7], nodeName1[7], nodeName2[7];
 127   char nodeName3[7], nodeName4[7], rotMatNum[7];
 128
 129   new TBRIK("S_TOF_C","TOF box","void",
 130             AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenC()*0.5);
 131   new TBRIK("S_TOF_B","TOF box","void",
 132             AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenB()*0.5);
 133   new TBRIK("S_TOF_A","TOF box","void",
 134             AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenA()*0.5);
 135
 136   for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
 137
 138     if (nodeNum<10) {
 139       sprintf(rotMatNum,"rot50%i",nodeNum);
 140       sprintf(nodeName0,"FTO00%i",nodeNum);
 141       sprintf(nodeName1,"FTO10%i",nodeNum);
 142       sprintf(nodeName2,"FTO20%i",nodeNum);
 143       sprintf(nodeName3,"FTO30%i",nodeNum);
 144       sprintf(nodeName4,"FTO40%i",nodeNum);
 145     }
 146     if (nodeNum>9) {
 147       sprintf(rotMatNum,"rot5%i",nodeNum);
 148       sprintf(nodeName0,"FTO0%i",nodeNum);
 149       sprintf(nodeName1,"FTO1%i",nodeNum);
 150       sprintf(nodeName2,"FTO2%i",nodeNum);
 151       sprintf(nodeName3,"FTO3%i",nodeNum);
 152       sprintf(nodeName4,"FTO4%i",nodeNum);
 153     }
 154
 155     new TRotMatrix(rotMatNum,rotMatNum,90,-20*nodeNum,90,90-20*nodeNum,0,0);
 156     ang = (4.5-nodeNum) * kangle;
 157
 158     top->cd();
 159     node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
 160     node->SetLineColor(kColorTOF);
 161     fNodes->Add(node);
 162
 163     top->cd();
 164     node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
 165     node->SetLineColor(kColorTOF);
 166     fNodes->Add(node);
 167
 168     top->cd();
 169     node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
 170     node->SetLineColor(kColorTOF);
 171     fNodes->Add(node);
 172
 173     top->cd();
 174     node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
 175     node->SetLineColor(kColorTOF);
 176     fNodes->Add(node);
 177
 178     top->cd();
 179     node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
 180     node->SetLineColor(kColorTOF);
 181     fNodes->Add(node);
 182   } // end loop on nodeNum
 183 }
 184
 185
 186
 187 //_____________________________________________________________________________
 188 void AliTOFv4T0::CreateGeometry()
 189 {
 190   //
 191   // Create geometry for Time Of Flight version 0
 192   //
 193   //Begin_Html
 194   /*
 195     <img src="picts/AliTOFv4T0.gif">
 196   */
 197   //End_Html
 198   //
 199   // Creates common geometry
 200   //
 201   AliTOF::CreateGeometry();
 202 }
 203
 204
 205 //_____________________________________________________________________________
 206 void AliTOFv4T0::TOFpc(Float_t xtof, Float_t ytof, Float_t zlenC,
 207                      Float_t zlenB, Float_t zlenA, Float_t ztof0)
 208 {
 209   //
 210   // Definition of the Time Of Fligh Resistive Plate Chambers
 211   // xFLT, yFLT, zFLT - sizes of TOF modules (large)
 212
 213   Float_t  ycoor;
 214   Float_t  par[3];
 215   Int_t    *idtmed = fIdtmed->GetArray()-499;
 216   Int_t    idrotm[100];
 217   Int_t    nrot = 0;
 218
 219   Float_t radius = AliTOFGeometry::Rmin()+2.;//cm
 220
 221
 222   par[0] =  xtof * 0.5;
 223   par[1] =  ytof * 0.5;
 224   par[2] = zlenC * 0.5;
 225   gMC->Gsvolu("FTOC", "BOX ", idtmed[506], par, 3);
 226   par[2] = zlenB * 0.5;
 227   gMC->Gsvolu("FTOB", "BOX ", idtmed[506], par, 3);
 228   par[2] = zlenA * 0.5;
 229   gMC->Gsvolu("FTOA", "BOX ", idtmed[506], par, 3);
 230
 231
 232   // Positioning of modules
 233
 234   Float_t zcor1 = ztof0 - zlenC*0.5;
 235   Float_t zcor2 = ztof0 - zlenC - zlenB*0.5;
 236   Float_t zcor3 = 0.;
 237
 238   AliMatrix(idrotm[0], 90.,  0., 0., 0., 90,-90.);
 239   AliMatrix(idrotm[1], 90.,180., 0., 0., 90, 90.);
 240
 241   gMC->Gspos("FTOC", 1, "BTO1", 0,  zcor1, 0, idrotm[0], "ONLY");
 242   gMC->Gspos("FTOC", 2, "BTO1", 0, -zcor1, 0, idrotm[1], "ONLY");
 243   gMC->Gspos("FTOC", 1, "BTO2", 0,  zcor1, 0, idrotm[0], "ONLY");
 244   gMC->Gspos("FTOC", 2, "BTO2", 0, -zcor1, 0, idrotm[1], "ONLY");
 245   gMC->Gspos("FTOC", 1, "BTO3", 0,  zcor1, 0, idrotm[0], "ONLY");
 246   gMC->Gspos("FTOC", 2, "BTO3", 0, -zcor1, 0, idrotm[1], "ONLY");
 247
 248   gMC->Gspos("FTOB", 1, "BTO1", 0,  zcor2, 0, idrotm[0], "ONLY");
 249   gMC->Gspos("FTOB", 2, "BTO1", 0, -zcor2, 0, idrotm[1], "ONLY");
 250   gMC->Gspos("FTOB", 1, "BTO2", 0,  zcor2, 0, idrotm[0], "ONLY");
 251   gMC->Gspos("FTOB", 2, "BTO2", 0, -zcor2, 0, idrotm[1], "ONLY");
 252   gMC->Gspos("FTOB", 1, "BTO3", 0,  zcor2, 0, idrotm[0], "ONLY");
 253   gMC->Gspos("FTOB", 2, "BTO3", 0, -zcor2, 0, idrotm[1], "ONLY");
 254
 255   gMC->Gspos("FTOA", 0, "BTO1", 0, zcor3,  0, idrotm[0], "ONLY");
 256   if(!fTOFHoles)gMC->Gspos("FTOA", 0, "BTO2", 0, zcor3,  0, idrotm[0], "ONLY");
 257   gMC->Gspos("FTOA", 0, "BTO3", 0, zcor3,  0, idrotm[0], "ONLY");
 258
 259
 260   Float_t db = 0.5; // cm
 261   Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
 262
 263   xFLT = AliTOFGeometry::StripLength();
 264   yFLT = ytof;
 265   zFLTA = zlenA;
 266   zFLTB = zlenB;
 267   zFLTC = zlenC;
 268
 269   xFST = xFLT - AliTOFGeometry::DeadBndX()*2; // cm
 270
 271   // Sizes of MRPC pads
 272
 273   Float_t yPad = 0.505; //cm
 274
 275   // Large not sensitive volumes with Insensitive Freon
 276   par[0] = xFLT*0.5;
 277   par[1] = yFLT*0.5;
 278
 279   if (fDebug) cout << ClassName() <<
 280                 ": ************************* TOF geometry **************************"<<endl;
 281
 282   par[2] = (zFLTA *0.5);
 283   gMC->Gsvolu("FLTA", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 284   gMC->Gspos ("FLTA", 0, "FTOA", 0., 0., 0., 0, "ONLY");
 285
 286   par[2] = (zFLTB * 0.5);
 287   gMC->Gsvolu("FLTB", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 288   gMC->Gspos ("FLTB", 0, "FTOB", 0., 0., 0., 0, "ONLY");
 289
 290   par[2] = (zFLTC * 0.5);
 291   gMC->Gsvolu("FLTC", "BOX ", idtmed[512], par, 3); // Insensitive Freon
 292   gMC->Gspos ("FLTC", 0, "FTOC", 0., 0., 0., 0, "ONLY");
 293
 294   ///// Layers of Aluminum before and after detector /////
 295   ///// Aluminum Box for Modules (1.8 mm thickness)  /////
 296   ///// lateral walls not simulated for the time being
 297   //    const Float_t khAlWall = 0.18;
 298   // fp to be checked
 299   const Float_t khAlWall = 0.11;
 300   par[0] = xFLT*0.5;
 301   par[1] = khAlWall/2.; // cm
 302   ycoor = -yFLT/2 + par[1];
 303   par[2] = (zFLTA *0.5);
 304   gMC->Gsvolu("FALA", "BOX ", idtmed[508], par, 3); // Alluminium
 305   gMC->Gspos ("FALA", 1, "FLTA", 0., ycoor, 0., 0, "ONLY");
 306   gMC->Gspos ("FALA", 2, "FLTA", 0.,-ycoor, 0., 0, "ONLY");
 307   par[2] = (zFLTB *0.5);
 308   gMC->Gsvolu("FALB", "BOX ", idtmed[508], par, 3); // Alluminium
 309   gMC->Gspos ("FALB", 1, "FLTB", 0., ycoor, 0., 0, "ONLY");
 310   gMC->Gspos ("FALB", 2, "FLTB", 0.,-ycoor, 0., 0, "ONLY");
 311   par[2] = (zFLTC *0.5);
 312   gMC->Gsvolu("FALC", "BOX ", idtmed[508], par, 3); // Alluminium
 313   gMC->Gspos ("FALC", 1, "FLTC", 0., ycoor, 0., 0, "ONLY");
 314   gMC->Gspos ("FALC", 2, "FLTC", 0.,-ycoor, 0., 0, "ONLY");
 315
 316   ///////////////// Detector itself //////////////////////
 317
 318   const Float_t  kdeadBound  =  AliTOFGeometry::DeadBndZ(); //cm non-sensitive between the pad edge
 319   //and the boundary of the strip
 320   const Int_t    knx    = AliTOFGeometry::NpadX();  // number of pads along x
 321   const Int_t    knz    = AliTOFGeometry::NpadZ();  // number of pads along z
 322
 323   Float_t zSenStrip  = AliTOFGeometry::ZPad() * AliTOFGeometry::NpadZ(); // cm
 324   Float_t stripWidth = zSenStrip + 2*kdeadBound;
 325
 326   par[0] = xFLT*0.5;
 327   par[1] = yPad*0.5;
 328   par[2] = stripWidth*0.5;
 329
 330   // new description for strip volume -double stack strip-
 331   // -- all constants are expressed in cm
 332   // heigth of different layers
 333   const Float_t khhony = 0.8     ;   // heigth of HONY  Layer
 334   const Float_t khpcby = 0.08    ;   // heigth of PCB   Layer
 335   const Float_t khmyly = 0.035   ;   // heigth of MYLAR Layer
 336   const Float_t khgraphy = 0.02  ;   // heigth of GRAPHITE Layer
 337   const Float_t khglasseiy = 0.135;  // 0.6 Ext. Glass + 1.1 i.e. (Int. Glass/2) (mm)
 338   const Float_t khsensmy = 0.11  ;   // heigth of Sensitive Freon Mixture
 339   const Float_t kwsensmz = 2*3.5 ;   // cm
 340   const Float_t klsensmx = 48*2.5;   // cm
 341   const Float_t kwpadz = 3.5;   // cm z dimension of the FPAD volume
 342   const Float_t klpadx = 2.5;   // cm x dimension of the FPAD volume
 343
 344   // heigth of the FSTR Volume (the strip volume)
 345   const Float_t khstripy = 2*khhony+3*khpcby+4*(khmyly+khgraphy+khglasseiy)+2*khsensmy;
 346   // width  of the FSTR Volume (the strip volume)
 347   const Float_t kwstripz = 10.;
 348   // length of the FSTR Volume (the strip volume)
 349   const Float_t klstripx = 122.;
 350
 351   Float_t parfp[3]={klstripx*0.5,khstripy*0.5,kwstripz*0.5};
 352   // Coordinates of the strip center in the strip reference frame;
 353   // used for positioninG internal strip volumes
 354   Float_t posfp[3]={0.,0.,0.};
 355
 356
 357   // FSTR volume definition-filling this volume with non sensitive Gas Mixture
 358   gMC->Gsvolu("FSTR","BOX",idtmed[512],parfp,3);
 359   //-- HONY Layer definition
 360   //  parfp[0] = -1;
 361   parfp[1] = khhony*0.5;
 362   //  parfp[2] = -1;
 363   gMC->Gsvolu("FHON","BOX",idtmed[503],parfp,3);
 364   // positioning 2 HONY Layers on FSTR volume
 365
 366   posfp[1]=-khstripy*0.5+parfp[1];
 367   gMC->Gspos("FHON",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 368   gMC->Gspos("FHON",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 369
 370   //-- PCB Layer definition
 371
 372   parfp[1] = khpcby*0.5;
 373   gMC->Gsvolu("FPCB","BOX",idtmed[504],parfp,3);
 374   // positioning 2 PCB Layers on FSTR volume
 375   posfp[1]=-khstripy*0.5+khhony+parfp[1];
 376   gMC->Gspos("FPCB",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 377   gMC->Gspos("FPCB",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 378   // positioning the central PCB layer
 379   gMC->Gspos("FPCB",3,"FSTR",0.,0.,0.,0,"ONLY");
 380
 381
 382
 383   //-- MYLAR Layer definition
 384
 385   parfp[1] = khmyly*0.5;
 386   gMC->Gsvolu("FMYL","BOX",idtmed[511],parfp,3);
 387   // positioning 2 MYLAR Layers on FSTR volume
 388   posfp[1] = -khstripy*0.5+khhony+khpcby+parfp[1];
 389   gMC->Gspos("FMYL",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 390   gMC->Gspos("FMYL",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 391   // adding further 2 MYLAR Layers on FSTR volume
 392   posfp[1] = khpcby*0.5+parfp[1];
 393   gMC->Gspos("FMYL",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 394   gMC->Gspos("FMYL",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 395
 396
 397   //-- Graphite Layer definition
 398
 399   parfp[1] = khgraphy*0.5;
 400   gMC->Gsvolu("FGRP","BOX",idtmed[502],parfp,3);
 401   // positioning 2 Graphite Layers on FSTR volume
 402   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+parfp[1];
 403   gMC->Gspos("FGRP",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 404   gMC->Gspos("FGRP",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 405   // adding further 2 Graphite Layers on FSTR volume
 406   posfp[1] = khpcby*0.5+khmyly+parfp[1];
 407   gMC->Gspos("FGRP",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 408   gMC->Gspos("FGRP",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 409
 410
 411   //-- Glass (EXT. +Semi INT.) Layer definition
 412
 413   parfp[1] = khglasseiy*0.5;
 414   gMC->Gsvolu("FGLA","BOX",idtmed[514],parfp,3);
 415   // positioning 2 Glass Layers on FSTR volume
 416   posfp[1] = -khstripy*0.5+khhony+khpcby+khmyly+khgraphy+parfp[1];
 417   gMC->Gspos("FGLA",1,"FSTR",0., posfp[1],0.,0,"ONLY");
 418   gMC->Gspos("FGLA",2,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 419   // adding further 2 Glass Layers on FSTR volume
 420   posfp[1] = khpcby*0.5+khmyly+khgraphy+parfp[1];
 421   gMC->Gspos("FGLA",3,"FSTR",0., posfp[1],0.,0,"ONLY");
 422   gMC->Gspos("FGLA",4,"FSTR",0.,-posfp[1],0.,0,"ONLY");
 423
 424
 425   //-- Sensitive Mixture Layer definition
 426
 427   parfp[0] = klsensmx*0.5;
 428   parfp[1] = khsensmy*0.5;
 429   parfp[2] = kwsensmz*0.5;
 430   gMC->Gsvolu("FSEN","BOX",idtmed[513],parfp,3);
 431   gMC->Gsvolu("FNSE","BOX",idtmed[512],parfp,3);
 432   // positioning 2 gas Layers on FSTR volume
 433   // the upper is insensitive freon
 434   // while the remaining is sensitive
 435   posfp[1] = khpcby*0.5+khmyly+khgraphy+khglasseiy+parfp[1];
 436   gMC->Gspos("FNSE",0,"FSTR", 0., posfp[1],0.,0,"ONLY");
 437   gMC->Gspos("FSEN",0,"FSTR", 0.,-posfp[1],0.,0,"ONLY");
 438
 439   // dividing FSEN along z in knz=2 and along x in knx=48
 440
 441   gMC->Gsdvn("FSEZ","FSEN",knz,3);
 442   gMC->Gsdvn("FSEX","FSEZ",knx,1);
 443
 444   // FPAD volume definition
 445
 446   parfp[0] = klpadx*0.5;
 447   parfp[1] = khsensmy*0.5;
 448   parfp[2] = kwpadz*0.5;
 449   gMC->Gsvolu("FPAD","BOX",idtmed[513],parfp,3);
 450   // positioning the FPAD volumes on previous divisions
 451   gMC->Gspos("FPAD",0,"FSEX",0.,0.,0.,0,"ONLY");
 452
 453
 454   ///////////////////Positioning A module//////////////////////////
 455
 456
 457   for(Int_t istrip =0; istrip < fTOFGeometry->NStripA(); istrip++){
 458
 459     Float_t ang = fTOFGeometry->GetAngles(2,istrip);
 460     AliMatrix (idrotm[0],90.,0.,90.-ang,90.,-ang, 90.);
 461     ang /= kRaddeg;
 462     Float_t zpos = tan(ang)*radius;
 463     Float_t ypos= fTOFGeometry->GetHeights(2,istrip);
 464     gMC->Gspos("FSTR",AliTOFGeometry::NStripA()-istrip,"FLTA",0.,ypos, zpos,idrotm[0],  "ONLY");
 465     if(fDebug>=1) {
 466       printf("y = %f,  z = %f, , z coord = %f, Rot ang = %f, St. %2i \n",ypos,zpos,tan(ang)*radius ,ang*kRaddeg,istrip);
 467     }
 468   }
 469
 470
 471   ///////////////////Positioning B module//////////////////////////
 472
 473   for(Int_t istrip =0; istrip < fTOFGeometry->NStripB(); istrip++){
 474
 475     Float_t ang = fTOFGeometry->GetAngles(3,istrip);
 476     AliMatrix (idrotm[0],90.,0.,90.-ang,90.,-ang, 90.);
 477     ang /= kRaddeg;
 478     Float_t zpos = tan(ang)*radius+(zFLTA*0.5+zFLTB*0.5+db);
 479     Float_t ypos= fTOFGeometry->GetHeights(3,istrip);
 480     gMC->Gspos("FSTR",istrip+1,"FLTB",0.,ypos, zpos,idrotm[nrot],  "ONLY");
 481     if(fDebug>=1) {
 482       printf("y = %f,  z = %f, , z coord = %f, Rot ang = %f, St. %2i \n",ypos,zpos,tan(ang)*radius,ang*kRaddeg,istrip);
 483     }
 484   }
 485
 486
 487   ///////////////////Positioning C module//////////////////////////
 488
 489   for(Int_t istrip =0; istrip < fTOFGeometry->NStripC(); istrip++){
 490
 491     Float_t ang = fTOFGeometry->GetAngles(4,istrip);
 492     AliMatrix (idrotm[0],90.,0.,90.-ang,90.,-ang, 90.);
 493     ang /= kRaddeg;
 494     Float_t zpos = tan(ang)*radius+(zFLTC*0.5+zFLTB+zFLTA*0.5+db*2);
 495     Float_t ypos= fTOFGeometry->GetHeights(4,istrip);
 496     gMC->Gspos("FSTR",istrip+1,"FLTC",0.,ypos, zpos,idrotm[nrot],  "ONLY");
 497     if(fDebug>=1) {
 498       printf("y = %f,  z = %f, z coord = %f, Rot ang = %f, St. %2i \n",ypos,zpos,tan(ang)*radius,ang*kRaddeg,istrip);
 499     }
 500   }
 501
 502   ////////// Layers after strips /////////////////
 503   // Al Layer thickness (2.3mm) factor 0.7
 504
 505   Float_t overSpace = AliTOFGeometry::OverSpc();//cm
 506
 507   par[0] = xFLT*0.5;
 508   par[1] = 0.115*0.7; // factor 0.7
 509   par[2] = (zFLTA *0.5);
 510   ycoor = -yFLT/2 + overSpace + par[1];
 511   gMC->Gsvolu("FPEA", "BOX ", idtmed[508], par, 3); // Al
 512   gMC->Gspos ("FPEA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 513   par[2] = (zFLTB *0.5);
 514   gMC->Gsvolu("FPEB", "BOX ", idtmed[508], par, 3); // Al
 515   gMC->Gspos ("FPEB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 516   par[2] = (zFLTC *0.5);
 517   gMC->Gsvolu("FPEC", "BOX ", idtmed[508], par, 3); // Al
 518   gMC->Gspos ("FPEC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 519
 520
 521   // plexiglass thickness: 1.5 mm ; factor 0.3
 522
 523   ycoor += par[1];
 524   par[0] = xFLT*0.5;
 525   par[1] = 0.075*0.3; // factor 0.3
 526   par[2] = (zFLTA *0.5);
 527   ycoor += par[1];
 528   gMC->Gsvolu("FECA", "BOX ", idtmed[505], par, 3); // Plexigl.
 529   gMC->Gspos ("FECA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 530   par[2] = (zFLTB *0.5);
 531   gMC->Gsvolu("FECB", "BOX ", idtmed[505], par, 3); // Plexigl.
 532   gMC->Gspos ("FECB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 533   par[2] = (zFLTC *0.5);
 534   gMC->Gsvolu("FECC", "BOX ", idtmed[505], par, 3); // Plexigl.
 535   gMC->Gspos ("FECC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 536
 537   // frame of Air
 538
 539   ycoor += par[1];
 540   par[0] = xFLT*0.5;
 541   par[1] = (yFLT/2-ycoor-khAlWall)*0.5; // Aluminum layer considered (0.18 cm)
 542   par[2] = (zFLTA *0.5);
 543   ycoor += par[1];
 544   gMC->Gsvolu("FAIA", "BOX ", idtmed[500], par, 3); // Air
 545   gMC->Gspos ("FAIA", 0, "FLTA", 0., ycoor, 0., 0, "ONLY");
 546   par[2] = (zFLTB *0.5);
 547   gMC->Gsvolu("FAIB", "BOX ", idtmed[500], par, 3); // Air
 548   gMC->Gspos ("FAIB", 0, "FLTB", 0., ycoor, 0., 0, "ONLY");
 549   par[2] = (zFLTC *0.5);
 550   gMC->Gsvolu("FAIC", "BOX ", idtmed[500], par, 3); // Air
 551   gMC->Gspos ("FAIC", 0, "FLTC", 0., ycoor, 0., 0, "ONLY");
 552
 553
 554   // start with cards and cooling tubes
 555   // finally, cards, cooling tubes and layer for thermal dispersion
 556   // 3 volumes
 557   // card volume definition
 558
 559   // see GEOM200 in GEANT manual
 560
 561
 562   AliMatrix(idrotm[98], 90., 0., 90., 90., 0., 0.); // 0 deg
 563
 564   Float_t cardpar[3];
 565   cardpar[0]= 61.;
 566   cardpar[1]= 5.;
 567   cardpar[2]= 0.1;
 568   gMC->Gsvolu("FCAR", "BOX ", idtmed[504], cardpar, 3); // PCB Card
 569   //alu plate volume definition
 570   cardpar[1]= 3.5;
 571   cardpar[2]= 0.05;
 572   gMC->Gsvolu("FALP", "BOX ", idtmed[508], cardpar, 3); // Alu Plate
 573
 574
 575   // central module positioning (FAIA)
 576   Float_t cardpos[3], aplpos2, stepforcardA=6.625;
 577   cardpos[0]= 0.;
 578   cardpos[1]= -0.5;
 579   cardpos[2]= -53.;
 580   Float_t aplpos1 = -2.;
 581   Int_t icard;
 582   for (icard=0; icard < fTOFGeometry->NStripA(); ++icard) {
 583     cardpos[2]= cardpos[2]+stepforcardA;
 584     aplpos2 = cardpos[2]+0.15;
 585     gMC->Gspos("FCAR",icard,"FAIA",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 586     gMC->Gspos("FALP",icard,"FAIA",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 587
 588   }
 589
 590
 591   // intermediate module positioning (FAIB)
 592   Float_t stepforcardB= 7.05;
 593   cardpos[2]= -70.5;
 594   for (icard=0; icard < fTOFGeometry->NStripB(); ++icard) {
 595     cardpos[2]= cardpos[2]+stepforcardB;
 596     aplpos2 = cardpos[2]+0.15;
 597     gMC->Gspos("FCAR",icard,"FAIB",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 598     gMC->Gspos("FALP",icard,"FAIB",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 599   }
 600
 601
 602   // outer module positioning (FAIC)
 603   Float_t stepforcardC= 8.45238;
 604   cardpos[2]= -88.75;
 605   for (icard=0; icard < fTOFGeometry->NStripC(); ++icard) {
 606     cardpos[2]= cardpos[2]+stepforcardC;
 607     aplpos2 = cardpos[2]+0.15;
 608     gMC->Gspos("FCAR",icard,"FAIC",cardpos[0],cardpos[1],cardpos[2],idrotm[98],"ONLY");
 609     gMC->Gspos("FALP",icard,"FAIC",cardpos[0],aplpos1,aplpos2,idrotm[98],"ONLY");
 610   }
 611
 612   // tube volume definition
 613
 614   Float_t tubepar[3];
 615   tubepar[0]= 0.;
 616   tubepar[1]= 0.4;
 617   tubepar[2]= 61.;
 618   gMC->Gsvolu("FTUB", "TUBE", idtmed[516], tubepar, 3); // cooling tubes (steel)
 619   tubepar[0]= 0.;
 620   tubepar[1]= 0.35;
 621   tubepar[2]= 61.;
 622   gMC->Gsvolu("FITU", "TUBE", idtmed[515], tubepar, 3); // cooling water
 623   // positioning water tube into the steel one
 624   gMC->Gspos("FITU",1,"FTUB",0.,0.,0.,0,"ONLY");
 625
 626
 627   // rotation matrix
 628   AliMatrix(idrotm[99], 180., 90., 90., 90., 90., 0.);
 629   // central module positioning (FAIA)
 630   Float_t tubepos[3], tdis=0.6;
 631   tubepos[0]= 0.;
 632   tubepos[1]= cardpos[1];
 633   tubepos[2]= -53.+tdis;
 634   //  tub1pos = 5.;
 635   Int_t itub;
 636   for (itub=0; itub < fTOFGeometry->NStripA(); ++itub) {
 637     tubepos[2]= tubepos[2]+stepforcardA;
 638     gMC->Gspos("FTUB",itub,"FAIA",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 639                "ONLY");
 640   }
 641
 642
 643   // intermediate module positioning (FAIB)
 644   tubepos[2]= -70.5+tdis;
 645   for (itub=0; itub < fTOFGeometry->NStripB(); ++itub) {
 646     tubepos[2]= tubepos[2]+stepforcardB;
 647     gMC->Gspos("FTUB",itub,"FAIB",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 648                "ONLY");
 649   }
 650
 651   // outer module positioning (FAIC)
 652   tubepos[2]= -88.75+tdis;
 653   for (itub=0; itub < fTOFGeometry->NStripC(); ++itub) {
 654     tubepos[2]= tubepos[2]+stepforcardC;
 655     gMC->Gspos("FTUB",itub,"FAIC",tubepos[0],tubepos[1],tubepos[2],idrotm[99],
 656                "ONLY");
 657   }
 658
 659 }
 660 //_____________________________________________________________________________
 661 void AliTOFv4T0::DrawModule() const
 662 {
 663   //
 664   // Draw a shaded view of the Time Of Flight version 4
 665   //
 666   // Set everything unseen
 667   gMC->Gsatt("*", "seen", -1);
 668   //
 669   // Set ALIC mother transparent
 670   gMC->Gsatt("ALIC","SEEN",0);
 671   //
 672   // Set the volumes visible
 673   gMC->Gsatt("ALIC","SEEN",0);
 674
 675   gMC->Gsatt("FTOA","SEEN",1);
 676   gMC->Gsatt("FTOB","SEEN",1);
 677   gMC->Gsatt("FTOC","SEEN",1);
 678   gMC->Gsatt("FLTA","SEEN",1);
 679   gMC->Gsatt("FLTB","SEEN",1);
 680   gMC->Gsatt("FLTC","SEEN",1);
 681   gMC->Gsatt("FPLA","SEEN",1);
 682   gMC->Gsatt("FPLB","SEEN",1);
 683   gMC->Gsatt("FPLC","SEEN",1);
 684   gMC->Gsatt("FSTR","SEEN",1);
 685   gMC->Gsatt("FPEA","SEEN",1);
 686   gMC->Gsatt("FPEB","SEEN",1);
 687   gMC->Gsatt("FPEC","SEEN",1);
 688
 689   gMC->Gsatt("FLZ1","SEEN",0);
 690   gMC->Gsatt("FLZ2","SEEN",0);
 691   gMC->Gsatt("FLZ3","SEEN",0);
 692   gMC->Gsatt("FLX1","SEEN",0);
 693   gMC->Gsatt("FLX2","SEEN",0);
 694   gMC->Gsatt("FLX3","SEEN",0);
 695   gMC->Gsatt("FPAD","SEEN",0);
 696
 697   gMC->Gdopt("hide", "on");
 698   gMC->Gdopt("shad", "on");
 699   gMC->Gsatt("*", "fill", 7);
 700   gMC->SetClipBox(".");
 701   gMC->SetClipBox("*", 0, 1000, -1000, 1000, -1000, 1000);
 702   gMC->DefaultRange();
 703   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .02, .02);
 704   gMC->Gdhead(1111, "Time Of Flight");
 705   gMC->Gdman(18, 4, "MAN");
 706   gMC->Gdopt("hide","off");
 707 }
 708 //_____________________________________________________________________________
 709 void AliTOFv4T0::DrawDetectorModules()
 710 {
 711 //
 712 // Draw a shaded view of the TOF detector version 4
 713 //
 714
 715
 716 //Set ALIC mother transparent
 717   gMC->Gsatt("ALIC","SEEN",0);
 718
 719 //
 720 //Set volumes visible
 721 //
 722 //=====> Level 1
 723   // Level 1 for TOF volumes
 724   gMC->Gsatt("B077","seen",0);
 725
 726
 727 //==========> Level 2
 728   // Level 2
 729   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 730   gMC->Gsatt("B071","seen",0);
 731   gMC->Gsatt("B074","seen",0);
 732   gMC->Gsatt("B075","seen",0);
 733   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 734
 735
 736   // Level 2 of B071
 737   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 738   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 739   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 740   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 741   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 742   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 743   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 744   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 745   gMC->Gsatt("BTO1","seen",0);
 746
 747
 748   // Level 2 of B074
 749   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 750   gMC->Gsatt("BTO2","seen",0);
 751
 752   // Level 2 of B075
 753   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 754   gMC->Gsatt("BTO3","seen",0);
 755
 756 // ==================> Level 3
 757   // Level 3 of B071 / Level 2 of BTO1
 758   gMC->Gsatt("FTOC","seen",-2);
 759   gMC->Gsatt("FTOB","seen",-2);
 760   gMC->Gsatt("FTOA","seen",-2);
 761
 762   // Level 3 of B074 / Level 2 of BTO2
 763   // -> cfr previous settings
 764
 765   // Level 3 of B075 / Level 2 of BTO3
 766   // -> cfr previous settings
 767
 768   gMC->Gdopt("hide","on");
 769   gMC->Gdopt("shad","on");
 770   gMC->Gsatt("*", "fill", 5);
 771   gMC->SetClipBox(".");
 772   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 773   gMC->DefaultRange();
 774   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 775   gMC->Gdhead(1111,"TOF detector V1");
 776   gMC->Gdman(18, 4, "MAN");
 777   gMC->Gdopt("hide","off");
 778 }
 779
 780 //_____________________________________________________________________________
 781 void AliTOFv4T0::DrawDetectorStrips()
 782 {
 783   //
 784   // Draw a shaded view of the TOF strips for version 4
 785   //
 786
 787   //Set ALIC mother transparent
 788   gMC->Gsatt("ALIC","SEEN",0);
 789
 790   //
 791   //Set volumes visible
 792   //=====> Level 1
 793   // Level 1 for TOF volumes
 794   gMC->Gsatt("B077","seen",0);
 795
 796   //==========> Level 2
 797   // Level 2
 798   gMC->Gsatt("B076","seen",-1); // all B076 sub-levels skipped -
 799   gMC->Gsatt("B071","seen",0);
 800   gMC->Gsatt("B074","seen",0);
 801   gMC->Gsatt("B075","seen",0);
 802   gMC->Gsatt("B080","seen",0); // B080 does not has sub-level
 803
 804   // Level 2 of B071
 805   gMC->Gsatt("B063","seen",-1); // all B063 sub-levels skipped   -
 806   gMC->Gsatt("B065","seen",-1); // all B065 sub-levels skipped   -
 807   gMC->Gsatt("B067","seen",-1); // all B067 sub-levels skipped   -
 808   gMC->Gsatt("B069","seen",-1); // all B069 sub-levels skipped   -
 809   gMC->Gsatt("B056","seen",0);  // B056 does not has sub-levels  -
 810   gMC->Gsatt("B059","seen",-1); // all B059 sub-levels skipped   -
 811   gMC->Gsatt("B072","seen",-1); // all B072 sub-levels skipped   -
 812   gMC->Gsatt("BTR1","seen",0);  // BTR1 do not have sub-levels   -
 813   gMC->Gsatt("BTO1","seen",0);
 814
 815   // ==================> Level 3
 816   // Level 3 of B071 / Level 2 of BTO1
 817   gMC->Gsatt("FTOC","seen",0);
 818   gMC->Gsatt("FTOB","seen",0);
 819   gMC->Gsatt("FTOA","seen",0);
 820
 821   // Level 3 of B074 / Level 2 of BTO2
 822   // -> cfr previous settings
 823
 824   // Level 3 of B075 / Level 2 of BTO3
 825   // -> cfr previous settings
 826
 827
 828   // ==========================> Level 4
 829   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOC
 830   gMC->Gsatt("FLTC","seen",0);
 831   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOB
 832   gMC->Gsatt("FLTB","seen",0);
 833   // Level 4 of B071 / Level 3 of BTO1 / Level 2 of FTOA
 834   gMC->Gsatt("FLTA","seen",0);
 835
 836   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOC
 837   // -> cfr previous settings
 838   // Level 4 of B074 / Level 3 of BTO2 / Level 2 of FTOB
 839   // -> cfr previous settings
 840
 841   // Level 4 of B075 / Level 3 of BTO3 / Level 2 of FTOC
 842   // -> cfr previous settings
 843
 844   //======================================> Level 5
 845   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOC / Level 2 of FLTC
 846   gMC->Gsatt("FALC","seen",0); // no children for FALC
 847   gMC->Gsatt("FSTR","seen",-2);
 848   gMC->Gsatt("FPEC","seen",0); // no children for FPEC
 849   gMC->Gsatt("FECC","seen",0); // no children for FECC
 850   gMC->Gsatt("FWAC","seen",0); // no children for FWAC
 851   gMC->Gsatt("FAIC","seen",0); // no children for FAIC
 852
 853   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOB / Level 2 of FLTB
 854   gMC->Gsatt("FALB","seen",0); // no children for FALB
 855   //-->  gMC->Gsatt("FSTR","seen",-2);
 856
 857
 858   // -> cfr previous settings
 859   gMC->Gsatt("FPEB","seen",0); // no children for FPEB
 860   gMC->Gsatt("FECB","seen",0); // no children for FECB
 861   gMC->Gsatt("FWAB","seen",0); // no children for FWAB
 862   gMC->Gsatt("FAIB","seen",0); // no children for FAIB
 863
 864   // Level 5 of B071 / Level 4 of BTO1 / Level 3 of FTOA / Level 2 of FLTA
 865   gMC->Gsatt("FALA","seen",0); // no children for FALB
 866   //-->  gMC->Gsatt("FSTR","seen",-2);
 867   // -> cfr previous settings
 868   gMC->Gsatt("FPEA","seen",0); // no children for FPEA
 869   gMC->Gsatt("FECA","seen",0); // no children for FECA
 870   gMC->Gsatt("FWAA","seen",0); // no children for FWAA
 871   gMC->Gsatt("FAIA","seen",0); // no children for FAIA
 872
 873   // Level 2 of B074
 874   gMC->Gsatt("BTR2","seen",0); // BTR2 does not has sub-levels -
 875   gMC->Gsatt("BTO2","seen",0);
 876
 877   // Level 2 of B075
 878   gMC->Gsatt("BTR3","seen",0); // BTR3 do not have sub-levels -
 879   gMC->Gsatt("BTO3","seen",0);
 880
 881   // for others Level 5, cfr. previous settings
 882
 883   gMC->Gdopt("hide","on");
 884   gMC->Gdopt("shad","on");
 885   gMC->Gsatt("*", "fill", 5);
 886   gMC->SetClipBox(".");
 887   gMC->SetClipBox("*", 0, 1000, 0, 1000, 0, 1000);
 888   gMC->DefaultRange();
 889   gMC->Gdraw("alic", 45, 40, 0, 10, 10, .015, .015);
 890   gMC->Gdhead(1111,"TOF Strips V1");
 891   gMC->Gdman(18, 4, "MAN");
 892   gMC->Gdopt("hide","off");
 893 }
 894
 895 //_____________________________________________________________________________
 896 void AliTOFv4T0::CreateMaterials()
 897 {
 898   //
 899   // Define materials for the Time Of Flight
 900   //
 901   AliTOF::CreateMaterials();
 902 }
 903
 904 //_____________________________________________________________________________
 905 void AliTOFv4T0::Init()
 906 {
 907   //
 908   // Initialise the detector after the geometry has been defined
 909   //
 910   if(fDebug) {
 911     printf("%s: **************************************"
 912            "  TOF  "
 913            "**************************************\n",ClassName());
 914     printf("\n%s:   Version 4 of TOF initialing, "
 915            "symmetric TOF - Full Coverage version\n",ClassName());
 916   }
 917
 918   AliTOF::Init();
 919
 920   fIdFTOA = gMC->VolId("FTOA");
 921   fIdFTOB = gMC->VolId("FTOB");
 922   fIdFTOC = gMC->VolId("FTOC");
 923   fIdFLTA = gMC->VolId("FLTA");
 924   fIdFLTB = gMC->VolId("FLTB");
 925   fIdFLTC = gMC->VolId("FLTC");
 926
 927   if(fDebug) {
 928     printf("%s: **************************************"
 929            "  TOF  "
 930            "**************************************\n",ClassName());
 931   }
 932 }
 933
 934 //_____________________________________________________________________________
 935 void AliTOFv4T0::StepManager()
 936 {
 937
 938   //
 939   // Procedure called at each step in the Time Of Flight
 940   //
 941
 942   TLorentzVector mom, pos;
 943   Float_t xm[3],pm[3],xpad[3],ppad[3];
 944   Float_t hits[14],phi,phid,z;
 945   Int_t   vol[5];
 946   Int_t   sector, plate, padx, padz, strip;
 947   Int_t   copy, padzid, padxid, stripid, i;
 948   Int_t   *idtmed = fIdtmed->GetArray()-499;
 949   Float_t incidenceAngle;
 950
 951   if(gMC->GetMedium()==idtmed[513] &&
 952      gMC->IsTrackEntering() && gMC->TrackCharge()
 953      && gMC->CurrentVolID(copy)==fIdSens)
 954   {
 955
 956     AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
 957
 958     // getting information about hit volumes
 959
 960     padzid=gMC->CurrentVolOffID(2,copy);
 961     padz=copy;
 962
 963
 964     padxid=gMC->CurrentVolOffID(1,copy);
 965     padx=copy;
 966
 967     stripid=gMC->CurrentVolOffID(4,copy);
 968     strip=copy;
 969
 970     gMC->TrackPosition(pos);
 971     gMC->TrackMomentum(mom);
 972
 973
 974     //    Double_t NormPos=1./pos.Rho();
 975
 976     Double_t normMom=1./mom.Rho();
 977
 978     //  getting the cohordinates in pad ref system
 979
 980     xm[0] = (Float_t)pos.X();
 981     xm[1] = (Float_t)pos.Y();
 982     xm[2] = (Float_t)pos.Z();
 983
 984     pm[0] = (Float_t)mom.X()*normMom;
 985     pm[1] = (Float_t)mom.Y()*normMom;
 986     pm[2] = (Float_t)mom.Z()*normMom;
 987
 988     gMC->Gmtod(xm,xpad,1);
 989     gMC->Gmtod(pm,ppad,2);
 990
 991
 992     if (TMath::Abs(ppad[1])>1) {
 993       Warning("StepManager","Abs(ppad) > 1");
 994       ppad[1]=TMath::Sign((Float_t)1,ppad[1]);
 995     }
 996     incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
 997
 998
 999     z = pos[2];
1000
1001     plate = -1;
1002
1003     if (TMath::Abs(z) <=  AliTOFGeometry::ZlenA()*0.5)  plate = 2;
1004     if (z < (AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()) &&
1005         z >  AliTOFGeometry::ZlenA()*0.5)               plate = 1;
1006     if (z >-(AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()) &&
1007         z < -AliTOFGeometry::ZlenA()*0.5)               plate = 3;
1008     if (z > (AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()))     plate = 0;
1009     if (z <-(AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()))     plate = 4;
1010
1011
1012     if (plate==0) strip=fTOFGeometry->NStripC()-strip;
1013     else if (plate==1) strip=fTOFGeometry->NStripB()-strip;
1014     else strip--;
1015
1016     //Apply ALICE conventions for volume numbering increasing with theta, phi
1017
1018     if (plate==3 || plate==4){
1019       padx=fTOFGeometry->NpadX()-padx;
1020       padz=fTOFGeometry->NpadZ()-padz;
1021       xpad[0]=-xpad[0];
1022       xpad[2]=-xpad[2];
1023     }
1024     else {
1025      padx--;
1026      padz--;
1027     }
1028
1029
1030
1031     phi = pos.Phi();
1032     if (phi>=0.) phid = phi*kRaddeg;
1033     else phid = phi*kRaddeg + 360.;
1034
1035     sector = Int_t (phid/20.);
1036
1037     for(i=0;i<3;++i) {
1038       hits[i]   = pos[i];
1039       hits[i+3] = pm[i];
1040     }
1041
1042     hits[6] = mom.Rho();
1043     hits[7] = pos[3];
1044     hits[8] = xpad[0];
1045     hits[9] = xpad[1];
1046     hits[10]= xpad[2];
1047     hits[11]= incidenceAngle;
1048     hits[12]= gMC->Edep();
1049     hits[13]= gMC->TrackLength();
1050
1051     vol[0]= sector;
1052     vol[1]= plate;
1053     vol[2]= strip;
1054     vol[3]= padx;
1055     vol[4]= padz;
1056
1057     AddT0Hit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
1058   }
1059 }