TPC/AliTPCv1.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /*
  17 $Log$
  18 Revision 1.24  2000/11/30 11:48:50  kowal2
  19 TLorentzVector.h adde to satisfy the latest changes by Federico
  20
  21 Revision 1.23  2000/11/14 10:48:57  kowal2
  22 Correct material used for TSA4. Thanks to J. Barbosa.
  23
  24 Revision 1.22  2000/11/06 17:24:10  kowal2
  25 Corrected bug in the outer containment vessel and
  26 the outer field cage geometry.
  27 Thanks to J. Barbosa.
  28
  29 Revision 1.21  2000/11/02 16:55:24  kowal2
  30 Corrected bug in the inner containment vessel geometry.
  31 Thanks to J. Belikov
  32
  33 Revision 1.20  2000/11/02 07:24:11  kowal2
  34 Correction in the TPC geometry.
  35 Changes due to the new hit structure.
  36
  37 Revision 1.19  2000/07/10 20:57:39  hristov
  38 Update of TPC code and macros by M.Kowalski
  39
  40 Revision 1.18  2000/06/30 12:07:50  kowal2
  41 Updated from the TPC-PreRelease branch
  42
  43 Revision 1.17.2.4  2000/06/26 07:39:42  kowal2
  44 Changes to obey the coding rules
  45
  46 Revision 1.17.2.3  2000/06/25 08:38:41  kowal2
  47 Splitted from AliTPCtracking
  48
  49 Revision 1.17.2.2  2000/06/16 12:58:13  kowal2
  50 Changed parameter settings
  51
  52 Revision 1.17.2.1  2000/06/09 07:15:07  kowal2
  53
  54 Defaults loaded automatically (hard-wired)
  55 Optional parameters can be set via macro called in the constructor
  56
  57 Revision 1.17  2000/05/15 10:00:30  kowal2
  58 Corrected bug in the TPC geometry, thanks to Ivana Hrivnacova
  59
  60 Revision 1.16  2000/04/17 09:37:33  kowal2
  61 removed obsolete AliTPCDigitsDisplay.C
  62
  63 Revision 1.15.8.2  2000/04/10 08:29:48  kowal2
  64
  65 Different pad geometry for different sectors
  66 Updated readouch chambers geometry
  67
  68 Revision 1.15.8.1  2000/04/10 07:56:53  kowal2
  69 Not used anymore - removed
  70
  71 Revision 1.15  1999/11/04 17:28:07  fca
  72 Correct barrel part of HV Degrader
  73
  74 Revision 1.14  1999/10/08 06:27:23  fca
  75 Corrected bug in the HV degrader geometry, thanks to G.Tabary
  76
  77 Revision 1.13  1999/10/04 13:39:54  fca
  78 Correct array index problem
  79
  80 Revision 1.12  1999/09/29 09:24:34  fca
  81 Introduction of the Copyright and cvs Log
  82
  83 */
  84
  85 //
  86 ///////////////////////////////////////////////////////////////////////////////
  87 //                                                                           //
  88 //  Time Projection Chamber version 1 -- detailed TPC and fast simulation    //
  89 //                                                                           //
  90 //Begin_Html
  91 /*
  92 <img src="picts/AliTPCv1Class.gif">
  93 */
  94 //End_Html
  95 //                                                                           //
  96 //                                                                           //
  97 ///////////////////////////////////////////////////////////////////////////////
  98
  99 #include <TMath.h>
 100 #include <TGeometry.h>
 101 #include <TNode.h>
 102 #include <TBRIK.h>
 103 #include <TTUBE.h>
 104 #include "AliTPCv1.h"
 105 #include "AliRun.h"
 106 #include <iostream.h>
 107 #include <fstream.h>
 108 #include "TLorentzVector.h"
 109
 110 #include "AliMC.h"
 111 #include "AliConst.h"
 112
 113 #include "AliTPCParam.h"
 114 #include "AliTPCParamSR.h"
 115 #include "AliTPCDigitsArray.h"
 116 #include <TInterpreter.h>
 117
 118 ClassImp(AliTPCv1)
 119
 120 //_____________________________________________________________________________
 121
 122   AliTPCv1::AliTPCv1(){
 123
 124   fHitType = 1;
 125
 126 }
 127
 128 //_____________________________________________________________________________
 129 AliTPCv1::AliTPCv1(const char *name, const char *title)
 130   :AliTPC(name, title) {
 131   //
 132   // Standard constructor for Time Projection Chamber
 133   //
 134   fIdSens=fIdLSec=fIdUSec=0;
 135
 136   SetGasMixt(2,20,10,-1,0.9,0.1,0.);
 137
 138   if (fTPCParam)
 139      fTPCParam->Write(fTPCParam->GetTitle());
 140
 141   fHitType=1;
 142 }
 143
 144 //_____________________________________________________________________________
 145 void AliTPCv1::CreateGeometry()
 146 {
 147   //-------------------------------------------------------------
 148   // Creates geometry for Time Projection Chamber version 1
 149   // Detailed geometry -- Fast simulation - space points
 150   // at the pad-rows centers
 151   // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
 152   //-----------------------------------------------------------
 153
 154   //Begin_Html
 155   /*
 156     <img src="picts/AliTPC.gif">
 157   */
 158   //End_Html
 159   //Begin_Html
 160   /*
 161     <img src="picts/AliTPCv1Tree.gif">
 162   */
 163   //End_Html
 164   Float_t dm[50];
 165
 166   Int_t *idtmed = fIdtmed->GetArray(); // TPC media
 167
 168   Int_t idrotm[120]; // rotation matrices
 169
 170   Int_t nRotMat = 0; // actual number of rotation matrices
 171
 172
 173   //
 174   //  Mother volume (Air) - all volumes will be positioned in it
 175   //
 176
 177   dm[0]=0.;
 178   dm[1]=360.;
 179   dm[2]=12.;
 180
 181   //
 182
 183   dm[3]= -283.7;
 184   dm[4]= 66.2;
 185   dm[5]= 277.95;
 186
 187   //
 188
 189   dm[6]= -255.6;
 190   dm[7]= 66.2;
 191   dm[8]= 277.95;
 192
 193   //
 194
 195   dm[9]= -73.3;
 196   dm[10]= 59.0;
 197   dm[11]= 277.95;
 198
 199   //
 200
 201   dm[12]= -73.3;
 202   dm[13]= 56.9;
 203   dm[14]= 277.95;
 204
 205   //
 206
 207   dm[15]= -72.1;
 208   dm[16]= 56.9;
 209   dm[17]= 277.95;
 210
 211   //
 212
 213   dm[18]= -72.1;
 214   dm[19]= 60.65;
 215   dm[20]= 277.95;
 216
 217   //
 218
 219   dm[21]= 72.1;
 220   dm[22]= 60.65;
 221   dm[23]= 277.95;
 222
 223   //
 224
 225   dm[24]= 72.1;
 226   dm[25]= 56.9;
 227   dm[26]= 277.95;
 228
 229   //
 230
 231   dm[27]= 73.3;
 232   dm[28]= 56.9;
 233   dm[29]= 277.95;
 234
 235   //
 236
 237   dm[30]= 73.3;
 238   dm[31]= 59.;
 239   dm[32]= 277.95;
 240
 241   //
 242
 243   dm[33]= 250.4;
 244   dm[34]= 66.0;
 245   dm[35]= 277.95;
 246
 247   //
 248
 249   dm[36]= 283.7;
 250   dm[37]= 66.0;
 251   dm[38]= 277.95;
 252
 253
 254   gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,39);
 255
 256
 257   //-------------------------------------------------------------------
 258   //  Tpc Outer INsulator (CO2)
 259   //-------------------------------------------------------------------
 260
 261   dm[0]= 0.;
 262   dm[1]= 360.;
 263   dm[2]= 6.;
 264
 265   //
 266
 267   dm[3]= -253.6;
 268   dm[4]= 258.;
 269   dm[5]= 266.65;
 270
 271   //
 272
 273   dm[6]= -253.;
 274   dm[7]= 258.;
 275   dm[8]= 266.65;
 276
 277   dm[9]= -253.;
 278   dm[10]= 258.;
 279   dm[11]= 277.97;
 280
 281   dm[12]= 253.6;
 282   dm[13]= 258.;
 283   dm[14]= 277.97;
 284
 285   //
 286
 287   dm[15]= 253.6;
 288   dm[16]= 265.2;
 289   dm[17]= 277.95;
 290
 291   //
 292
 293   dm[18]= 255.6;
 294   dm[19]= 265.2;
 295   dm[20]= 277.95;
 296
 297
 298   gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
 299
 300   //---------------------------------------------------------------
 301   // shreds (G10) - TPC Rings
 302   //---------------------------------------------------------------
 303
 304   gMC->Gsvolu("TPCR","TUBE",idtmed[12],dm,0);
 305
 306   dm[0]= 258.;
 307   dm[1]= 266.65;
 308   dm[2]= 0.3;
 309
 310   gMC->Gsposp("TPCR",1,"TOIN",0.,0.,-253.3,0,"ONLY",dm,3); // left bottom
 311
 312   //
 313
 314   dm[0]= 258.;
 315   dm[1]= 270.9;
 316   dm[2]= 0.3;
 317
 318   gMC->Gsposp("TPCR",2,"TOIN",0.,0.,253.3,0,"ONLY",dm,3); // right
 319
 320   //
 321
 322   dm[0]= 272.2;
 323   dm[1]= 277.95;
 324   dm[2]= 0.3;
 325
 326   gMC->Gsposp("TPCR",3,"TOIN",0.,0.,-250.7,0,"ONLY",dm,3); // left top
 327
 328   //----------------------------------------------------------------
 329   // Tpc Outer Contaiment Vessel
 330   //  mother volume - Al, daughters - composite (sandwich)
 331   //----------------------------------------------------------------
 332
 333   dm[0]= 0.;
 334   dm[1]= 360.;
 335   dm[2]=6.;
 336
 337   //
 338
 339   dm[3]= -250.4;
 340   dm[4]= 272.2;
 341   dm[5]= 277.95;
 342
 343   //
 344
 345   dm[6]= -248.4;
 346   dm[7]= 272.2;
 347   dm[8]= 277.95;
 348
 349   //
 350   dm[9]= -248.4;
 351   dm[10]= 274.81;
 352   dm[11]= 277.95;
 353
 354   //
 355
 356   dm[12]= 253.6;
 357   dm[13]= 274.81;
 358   dm[14]= 277.95;
 359
 360   //
 361
 362   dm[15]= 253.6;
 363   dm[16]= 265.2;
 364   dm[17]= 277.95;
 365
 366   //
 367
 368   dm[18]= 255.6;
 369   dm[19]= 265.2;
 370   dm[20]= 277.95;
 371
 372   gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
 373
 374   // Daughter volumes
 375
 376   // Tpc SAndwich 1 - Al
 377
 378   dm[0]= 274.81;
 379   dm[1]= 277.95;
 380   dm[2]= 251.7;
 381
 382   gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
 383
 384   // Tpc SAndwich 2 - Tedlar
 385
 386   dm[0] += 5.e-3;
 387   dm[1] -= 5.e-3;
 388
 389   gMC->Gsvolu("TSA2","TUBE",idtmed[9],dm,3);
 390
 391   // Tpc SAndwich 3 - Kevlar
 392
 393   dm[0] += 5e-3;
 394   dm[1] -= 5.e-3;
 395
 396   gMC->Gsvolu("TSA3","TUBE",idtmed[5],dm,3);
 397
 398   // Tpc SAndwich 4 - NOMEX honeycomb
 399
 400   dm[0] += 0.06;
 401   dm[1] -= 0.06;
 402
 403   gMC->Gsvolu("TSA4","TUBE",idtmed[6],dm,3);
 404
 405   // 4->3->2->1->TOCV
 406
 407   gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
 408   gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
 409   gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
 410
 411   gMC->Gspos("TSA1",1,"TOCV",0.,0.,2.6,0,"ONLY");
 412
 413   // TCOV-> TOIN
 414
 415   gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
 416
 417   //-------------------------------------------------------
 418   //  Tpc Outer Field Cage
 419   //  mother volume - Al, daughters - composite (sandwich)
 420   //-------------------------------------------------------
 421
 422   dm[0]=0.;
 423   dm[1]=360.;
 424   dm[2]=6.;
 425
 426   dm[3]= -253.;
 427   dm[4]= 258.;
 428   dm[5]= 277.95;
 429
 430   //
 431
 432   dm[6]= -251.;
 433   dm[7]= 258.;
 434   dm[8]= 277.95;
 435
 436   //
 437
 438   dm[9]= -251.;
 439   dm[10]= 258.;
 440   dm[11]= 260.05;
 441
 442   //
 443
 444   dm[12]= 251.;
 445   dm[13]= 258.;
 446   dm[14]= 260.05;
 447
 448   //
 449
 450   dm[15]= 251.;
 451   dm[16]= 258.;
 452   dm[17]= 270.9;
 453
 454   //
 455
 456   dm[18]= 253.;
 457   dm[19]= 258.;
 458   dm[20]= 270.9;
 459
 460   gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
 461
 462   // Daughter volumes
 463
 464   // Tpc SAndwich 5 - Tedlar
 465
 466   dm[0]= 258.;
 467   dm[1]= 260.05;
 468   dm[2]= 251.7;
 469
 470   gMC->Gsvolu("TSA5","TUBE",idtmed[9],dm,3);
 471
 472   // Tpc SAndwich 6 - Kevlar
 473
 474   dm[0] += 5.e-3;
 475   dm[1] -= 5.e-3;
 476
 477   gMC->Gsvolu("TSA6","TUBE",idtmed[5],dm,3);
 478
 479
 480   // Tpc SAndwich 7 - NOMEX
 481
 482   dm[0] += 0.02;
 483   dm[1] -= 0.02;
 484
 485   gMC->Gsvolu("TSA7","TUBE",idtmed[6],dm,3);
 486
 487   // 7->6->5->TOFC
 488
 489   gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
 490   gMC->Gspos("TSA6",1,"TSA5",0.,0.,0.,0,"ONLY");
 491
 492   gMC->Gspos("TSA5",1,"TOFC",0.,0.,0.,0,"ONLY");
 493
 494   // TOFC->TOIN
 495
 496   gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
 497
 498   // TOIN->TPC
 499
 500   gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
 501
 502   //--------------------------------------------------------------------
 503   // Tpc Inner INsulator (CO2)
 504   //--------------------------------------------------------------------
 505
 506
 507   dm[0]=0.;
 508   dm[1]= 360.;
 509   dm[2]= 15.;
 510
 511   //
 512
 513   dm[3]= -255.6;
 514   dm[4]= 66.2;
 515   dm[5]= 74.8;
 516
 517   //
 518
 519   Float_t tanL = (66.2-59.0)/(255.6-73.3); // tangent of the left cone part
 520
 521   dm[6]= -253.6;
 522   dm[7]= 59.0+ (253.6-73.3)*tanL;
 523   dm[8]= 74.8;
 524
 525   //
 526
 527   dm[9]= -253.6;
 528   dm[10]= dm[7];
 529   dm[11]= 79.2;
 530
 531   //
 532
 533   dm[12]= -73.3;
 534   dm[13]= 59.0;
 535   dm[14]= 79.2;
 536
 537   //
 538
 539   dm[15]= -73.3;
 540   dm[16]= 56.9;
 541   dm[17]= 79.2;
 542
 543   //
 544
 545   dm[18]= -72.1;
 546   dm[19]= 59.6;
 547   dm[20]= 79.2;
 548
 549   //
 550
 551   dm[21]= -72.1;
 552   dm[22]= 60.65;
 553   dm[23]= 79.2;
 554
 555   //
 556
 557   dm[24]= 72.1;
 558   dm[25]= 60.65;
 559   dm[26]= 79.2;
 560
 561   //
 562
 563   dm[27]= 72.1;
 564   dm[28]= 59.6;
 565   dm[29]= 79.2;
 566
 567   //
 568
 569   dm[30]= 73.3;
 570   dm[31]= 56.9;
 571   dm[32]= 79.2;
 572
 573   //
 574
 575   dm[33]= 73.3;
 576   dm[34]= 59.0;
 577   dm[35]= 79.2;
 578
 579   //
 580
 581   dm[36]= 250.4;
 582   dm[37]= 66.0;
 583   dm[38]= 79.2;
 584
 585   //
 586
 587   dm[39]= 253.0;
 588   dm[40]= 66.0;
 589   dm[41]= 79.2;
 590
 591   //
 592
 593   dm[42]= 253.0;
 594   dm[43]= 75.3;
 595   dm[44]= 79.2;
 596
 597   //
 598
 599   dm[45]= 253.6;
 600   dm[46]= 75.3;
 601   dm[47]= 79.2;
 602
 603   gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,48);
 604
 605
 606   //--------------------------------------------------------------------
 607   //  Tpc Inner Containment vessel, Left part
 608   //  mother volume - Al, daughter - composite (sandwich)
 609   //--------------------------------------------------------------------
 610
 611   dm[0]= 0.;
 612   dm[1]= 360.;
 613   dm[2]= 8.;
 614
 615   //
 616
 617   dm[3]= -255.6;
 618   dm[4]= 66.2;
 619   dm[5]= 74.8;
 620
 621   //
 622
 623   Float_t cosL = 1./TMath::Sqrt(1.+tanL*tanL);
 624   Float_t sandThick = 2.14; // cone composite thickness
 625
 626
 627   //
 628
 629   dm[6]= -253.6;
 630   dm[7]= 59.0 + (253.6-73.3)*tanL;
 631   dm[8]= 74.8;
 632
 633   //
 634
 635   dm[9]= -253.6;
 636   dm[10]= dm[7];
 637   dm[11]= dm[7]+sandThick/cosL;
 638
 639   //
 640
 641   dm[12]= -75.6;
 642   dm[13]= 59.0+(75.6-73.3)*tanL;
 643   dm[14]= dm[13]+sandThick/cosL;
 644
 645   //
 646
 647   dm[15]= -75.6;
 648   dm[16]= dm[13];
 649   dm[17]= 60.65;
 650
 651   //
 652
 653   dm[18]= -73.3;
 654   dm[19]= 59.0;
 655   dm[20]= 60.65;
 656
 657   //
 658
 659   dm[21]= -73.3;
 660   dm[22]= 56.9;
 661   dm[23]= 60.65;
 662
 663   //
 664
 665   dm[24]= -72.1;
 666   dm[25]= 56.9;
 667   dm[26]= 60.65;
 668
 669   gMC->Gsvolu("TICL","PCON",idtmed[4],dm,27);
 670
 671   // Daughter volumes
 672
 673   // Tpc SAndwich 9 - Al
 674
 675   dm[0]= 0.;
 676   dm[1]= 360.;
 677   dm[2]= 2.;
 678
 679   //
 680
 681   dm[3]= - 254.3;
 682   dm[4]= 59.0+(254.3-73.3)*tanL;
 683   dm[5]= dm[4]+sandThick/cosL;
 684
 685   //
 686
 687   dm[6]= -78.3;
 688   dm[7]= 59.0+(78.3-73.3)*tanL;
 689   dm[8]= dm[7]+sandThick/cosL;
 690
 691   //
 692
 693   gMC->Gsvolu("TSA9","PCON",idtmed[4],dm,9);
 694
 695   // Tpc SAndwich 10 - Tedlar
 696
 697   dm[4]+= 5.e-3/cosL;
 698   dm[5]-= 5.e-3/cosL;
 699
 700   //
 701
 702   dm[7]+= 5.e-3/cosL;
 703   dm[8]+= 5.e-3/cosL;
 704
 705   gMC->Gsvolu("TS10","PCON",idtmed[9],dm,9);
 706
 707   // Tpc SAndwich 11 - Kevlar
 708
 709   dm[4]+= 5.e-3/cosL;
 710   dm[5]-= 5.e-3/cosL;
 711
 712   //
 713
 714   dm[7]+= 5.e-3/cosL;
 715   dm[8]+= 5.e-3/cosL;
 716
 717   gMC->Gsvolu("TS11","PCON",idtmed[5],dm,9);
 718
 719   // Tpc SAndwich 12 - NOMEX
 720
 721   dm[4]+= 0.06/cosL;
 722   dm[5]-= 0.06/cosL;
 723
 724   //
 725
 726   dm[7]+= 0.06/cosL;
 727   dm[8]+= 0.06/cosL;
 728
 729   gMC->Gsvolu("TS12","PCON",idtmed[6],dm,9);
 730
 731   // 12->11->10->9
 732
 733   gMC->Gspos("TS12",1,"TS11",0.,0.,0.,0,"ONLY");
 734   gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
 735   gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
 736
 737   // TSA9->TICL
 738
 739   gMC->Gspos("TSA9",1,"TICL",0.,0.,0.,0,"ONLY");
 740
 741   //--------------------------------------------------------------------
 742   //  Tpc Inner Containment vessel, Right part
 743   //  mother volume - Al, daughter - composite (sandwich)
 744   //--------------------------------------------------------------------
 745
 746   dm[0]= 0.;
 747   dm[1]= 360.;
 748   dm[2]=8.;
 749
 750   //
 751
 752   dm[3]= 72.1;
 753   dm[4]= 56.9;
 754   dm[5]= 60.65;
 755
 756   //
 757
 758   dm[6]= 73.3;
 759   dm[7]= 56.9;
 760   dm[8]= 60.65;
 761
 762   //
 763
 764   dm[9]= 73.3;
 765   dm[10]= 59.0;
 766   dm[11]= 60.65;
 767
 768   //
 769
 770   Float_t tanR = (66.0-59.0)/(250.5-73.3); // to avoid accuracy problems
 771   Float_t cosR = 1./TMath::Sqrt(1.+tanR*tanR); //as above
 772
 773   //
 774
 775   dm[12]= 75.6;
 776   dm[13]= 59.0+(75.6-73.3)*tanR;
 777   dm[14]= 60.65;
 778
 779   //
 780
 781   dm[15]= 75.6;
 782   dm[16]= dm[13];
 783   dm[17]= dm[16]+sandThick/cosR;
 784
 785   //
 786
 787   dm[18]= 248.4;
 788   dm[19]= 59.0+(248.4-73.3)*tanR;
 789   dm[20]= dm[19]+sandThick/cosR;
 790
 791   //
 792
 793   dm[21]= 248.4;
 794   dm[22]= dm[19];
 795   dm[23]= 70.2;
 796
 797   //
 798
 799   dm[24]= 250.4;
 800   dm[25]= 66.0;
 801   dm[26]= 70.2;
 802
 803   gMC->Gsvolu("TICR","PCON",idtmed[4],dm,27);
 804
 805
 806
 807   // Daughter volumes
 808
 809   // Tpc SAndwich 13 - Al
 810
 811   dm[0]= 0.;
 812   dm[1]= 360.;
 813   dm[2]= 2.;
 814
 815   //
 816
 817   dm[3]= 78.3;
 818   dm[4]= 59.0+(78.3-73.3)*tanR;
 819   dm[5]= dm[4]+sandThick/cosR;
 820
 821   //
 822
 823   dm[6]= 249.1;
 824   dm[7]= 59.0+(249.1-73.3)*tanR;
 825   dm[8]= dm[7]+sandThick/cosR;
 826
 827   //
 828
 829   gMC->Gsvolu("TS13","PCON",idtmed[4],dm,9);
 830
 831   // Tpc SAndwich 14 - Tedlar
 832
 833   dm[4]+= 5.e-3/cosR;
 834   dm[5]-= 5.e-3/cosR;
 835
 836   //
 837
 838   dm[7]+= 5.e-3/cosR;
 839   dm[8]+= 5.e-3/cosR;
 840
 841   gMC->Gsvolu("TS14","PCON",idtmed[9],dm,9);
 842
 843   // Tpc SAndwich 15 - Kevlar
 844
 845   dm[4]+= 5.e-3/cosR;
 846   dm[5]-= 5.e-3/cosR;
 847
 848   //
 849
 850   dm[7]+= 5.e-3/cosR;
 851   dm[8]+= 5.e-3/cosR;
 852
 853   gMC->Gsvolu("TS15","PCON",idtmed[5],dm,9);
 854
 855   // Tpc SAndwich 16 - NOMEX
 856
 857   dm[4]+= 0.06/cosR;
 858   dm[5]-= 0.06/cosR;
 859
 860   //
 861
 862   dm[7]+= 0.06/cosR;
 863   dm[8]+= 0.06/cosR;
 864
 865   gMC->Gsvolu("TS16","PCON",idtmed[6],dm,9);
 866
 867   // 16->15->14->13
 868
 869   gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
 870   gMC->Gspos("TS15",1,"TS14",0.,0.,0.,0,"ONLY");
 871   gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
 872
 873   // TS12->TICR
 874
 875   gMC->Gspos("TS13",1,"TICR",0.,0.,0.,0,"ONLY");
 876
 877   //------------------------------------------------------
 878   // Tpc Inner Field Cage
 879   // mother volume - Al, daughters - composite (sandwich)
 880   //------------------------------------------------------
 881
 882   dm[0]= 0.;
 883   dm[1]= 360.;
 884   dm[2]=6.;
 885
 886   //
 887
 888   dm[3]= -253.0;
 889   dm[4]= 70.7;
 890   dm[5]= 79.2;
 891
 892   //
 893
 894   dm[6]= -251.0;
 895   dm[7]= 70.7;
 896   dm[8]= 79.2;
 897
 898   //
 899
 900   dm[9]= -251.0;
 901   dm[10]= 77.15;
 902   dm[11]= 79.2;
 903
 904   //
 905
 906   dm[12]= 251.0;
 907   dm[13]= 77.15;
 908   dm[14]= 79.2;
 909
 910   //
 911
 912   dm[15]= 251.0;
 913   dm[16]= 66.0;
 914   dm[17]= 79.2;
 915
 916   //
 917
 918   dm[18]= 253.0;
 919   dm[19]= 66.0;
 920   dm[20]= 79.2;
 921
 922   gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,21);
 923
 924   // Daughter volumes
 925
 926   // Tpc Sandwich 17 - Tedlar
 927
 928   dm[0]= 77.15;
 929   dm[1]= 79.2;
 930   dm[2]= 251.7;
 931
 932   gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
 933
 934   // Tpc Sandwich 18 - Kevlar
 935
 936   dm[0]+= 5.e-3;
 937   dm[1]-= 5.e-3;
 938
 939   gMC->Gsvolu("TS18","TUBE",idtmed[5],dm,3);
 940
 941
 942   // Tpc Sandwich 19 - NOMEX
 943
 944   dm[0]+= 0.02;
 945   dm[1]-= 0.02;
 946
 947   gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
 948
 949   // 19->18->17
 950
 951   gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
 952   gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
 953
 954   // TS17->TIFC
 955
 956   gMC->Gspos("TS17",1,"TIFC",0.,0.,0.,0,"ONLY");
 957
 958   // TPC Rings
 959
 960   dm[0]= 70.7;
 961   dm[1]= 79.2;
 962   dm[2]= 0.3;
 963
 964   gMC->Gsposp("TPCR",4,"TIIN",0.,0.,-253.3,0,"ONLY",dm,3);
 965
 966   dm[0]= 66.0;
 967   dm[1]= 70.2;
 968
 969   gMC->Gsposp("TPCR",5,"TIIN",0.,0.,250.7,0,"ONLY",dm,3);
 970
 971   dm[0]= 75.3;
 972   dm[1]= 79.2;
 973
 974   gMC->Gsposp("TPCR",6,"TIIN",0.,0.,253.3,0,"ONLY",dm,3);
 975
 976   // TICL->TIIN
 977
 978   gMC->Gspos("TICL",1,"TIIN",0.,0.,0.,0,"ONLY");
 979
 980   // TICR->TIIN
 981
 982   gMC->Gspos("TICR",1,"TIIN",0.,0.,0.,0,"ONLY");
 983
 984   // TIFC->TIIN
 985
 986   gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
 987
 988   // Tpc Sandwich 21 - Al (central barrel)
 989
 990   dm[0]= 60.65;
 991   dm[1]= 61.21;
 992   dm[2]= 75.2;
 993
 994   gMC->Gsvolu("TS21","TUBE",idtmed[4],dm,3);
 995
 996   // Tpc Sandwich 22 - Tedlar (central barrel)
 997
 998   dm[0]+= 5.e-3;
 999   dm[1]-= 5.e-3;
1000
1001   gMC->Gsvolu("TS22","TUBE",idtmed[9],dm,3);
1002
1003   // Tpc Sandwich 23 - Kevlar (central barrel)
1004
1005   dm[0]+= 5.e-3;
1006   dm[1]-= 5.e-3;
1007
1008   gMC->Gsvolu("TS23","TUBE",idtmed[5],dm,3);
1009
1010   // Tpc Sandwich 24 - NOMEX (central barrel)
1011
1012   dm[0]+= 0.02;
1013   dm[1]-= 0.02;
1014
1015   gMC->Gsvolu("TS24","TUBE",idtmed[6],dm,3);
1016
1017   // 24->23->22->21
1018
1019   gMC->Gspos("TS24",1,"TS23",0.,0.,0.,0,"ONLY");
1020   gMC->Gspos("TS23",1,"TS22",0.,0.,0.,0,"ONLY");
1021   gMC->Gspos("TS22",1,"TS21",0.,0.,0.,0,"ONLY");
1022
1023   gMC->Gspos("TS21",1,"TIIN",0.,0.,0.,0,"ONLY");
1024
1025   // put everything into the TPC
1026
1027   gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
1028
1029
1030   //---------------------------------------------------------
1031   //  Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
1032   //  and its daughters (HV membrane, rods, readout chambers)
1033   //---------------------------------------------------------
1034
1035   dm[0]= 79.2;
1036   dm[1]= 258.0;
1037   dm[2]= 253.6;
1038
1039   gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3);
1040
1041   // sector opening angles
1042
1043   Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
1044   Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
1045
1046   // sector angle shift
1047
1048   Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
1049
1050   // number of sectors
1051
1052   Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
1053   Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
1054
1055   // All above parameters are identical for inner and outer
1056   // sectors. The distinction is kept for the historical reasons
1057   // and eventually will disappear.
1058
1059   Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
1060   Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
1061   Float_t space;
1062
1063   //-------------------------------------------------------------------------
1064   //   Tpc Inner Readout Chambers
1065   //-------------------------------------------------------------------------
1066
1067   dm[0]= 14.483;
1068   dm[1]= 23.3345;
1069   dm[2]= 1.6; // thickness
1070   dm[3]= 25.1;
1071
1072   gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
1073
1074   // this volume will be positioned in the empty space
1075   // of the end-cap to avoid overlaps
1076
1077   dm[0]= 13.7305;
1078   dm[1]= 21.1895;
1079   dm[2]= 2.25;
1080   dm[3]= 21.15;
1081
1082   gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
1083
1084
1085   //------------------------------------------------
1086   // Tpc Inner readout chamber Pad Plane
1087   //------------------------------------------------
1088
1089   dm[0]= 14.483;
1090   dm[1]= 23.3345;
1091   dm[2]= 0.5;
1092   dm[3]= 25.1;
1093
1094   gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
1095
1096   //
1097
1098   dm[0] -= 1.218511934;
1099   dm[1] -= 1.218511934;
1100   dm[2] = 0.35;
1101
1102   gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
1103
1104   gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
1105
1106   gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
1107
1108
1109   //----------------------------------------------
1110   // Tpc Readout Chambers Empty spaces - for both
1111   // inner and outer sectors
1112   //----------------------------------------------
1113
1114   gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
1115
1116   // Inner sector - 4 spaces
1117
1118
1119   dm[3] = 4.7625;
1120   dm[0] = 12.472;
1121
1122   Float_t rr = 90.52;
1123   Float_t zz;
1124
1125   zz= -12.7875;
1126
1127   space = rr*tanAlpha-dm[0];
1128
1129   for(Int_t nsLow=0;nsLow<4;nsLow++){
1130
1131     rr += 9.525;
1132     dm[1]= rr*tanAlpha - space;
1133
1134     dm[2]=0.8;
1135
1136     gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
1137
1138     //
1139
1140     dm[2]= 1.2;
1141
1142     gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
1143
1144     rr += 0.4;
1145     dm[0] = rr*tanAlpha - space;
1146     zz += (0.4+9.525);
1147
1148   }
1149
1150   dm[0]= 12.472;
1151   // dm[1] - this is the dm[1] from the previous TRCE
1152   dm[2]= 1.05;
1153   dm[3]= 19.65;
1154
1155   gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
1156
1157   //
1158   // TPc Space for Connectors
1159   //
1160
1161   dm[0]= .3;
1162   dm[1]= .3;
1163   dm[2]= 4.5;
1164
1165   gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
1166
1167   // TPC Connectors
1168
1169   dm[0]= .25;
1170   dm[1]= .15;
1171   dm[2]= 3.75;
1172
1173   gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
1174
1175   gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
1176
1177   zz = -12.7875;
1178
1179
1180   Float_t alpha;
1181   Float_t astep;
1182
1183   Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
1184
1185   // inner part of the inner sector - 2 x 20 holes
1186
1187   astep = 20.00096874/19.;
1188
1189   alpha = 10.00048437-astep;
1190
1191   Float_t x1,x2;
1192
1193     x1 = 13.31175725;
1194     x1 -= 0.996357832;
1195
1196     x2 = 15.06180253;
1197     x2 -= 1.163028812;
1198
1199   Int_t ncon;
1200
1201   for(ncon=0;ncon<20;ncon++){
1202
1203     phi1 = 0.;
1204     theta1 = 90.+alpha;
1205     phi2=90.;
1206     theta2 = 90.;
1207     phi3 = (alpha>0) ? 0. : 180.;
1208     theta3 = TMath::Abs(alpha);
1209
1210     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1211
1212
1213
1214     gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1215     gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1216
1217
1218     x1 -= 1.296357833;
1219     x2 -= 1.463028812;
1220
1221     alpha -= astep;
1222     nRotMat++;
1223
1224   }
1225
1226   // outer part of the inner sector - 2 x 25 holes
1227
1228    astep = 20.00096874/24.;
1229    alpha = 10.00048437-astep;
1230
1231    x1 = 16.81184781;
1232    x1 -= 1.016295986;
1233
1234    x2 = 18.5618931;
1235    x2 -= 1.150914854;
1236
1237   for(ncon=0;ncon<25;ncon++){
1238
1239     phi1 = 0.;
1240     theta1 = 90.+alpha;
1241     phi2=90.;
1242     theta2 = 90.;
1243     phi3 = (alpha>0) ? 0. : 180.;
1244     theta3 = TMath::Abs(alpha);
1245
1246     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1247
1248
1249
1250     gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1251     gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1252
1253
1254     x1 -= 1.316295986;
1255     x2 -= 1.450914854;
1256
1257     alpha -= astep;
1258     nRotMat++;
1259
1260   }
1261
1262   //--------------------------------------------------------------------------
1263   //  TPC Outer Readout Chambers
1264   //  this is NOT a final design
1265   //--------------------------------------------------------------------------
1266
1267   dm[0]= 23.3875;
1268   dm[1]= 43.524;
1269   dm[2]= 1.5; //thickness
1270   dm[3]= 57.1;
1271
1272   gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1273
1274   //------------------------------------------------
1275   // Tpc Outer readout chamber Pad Plane
1276   //------------------------------------------------
1277
1278   dm[2]= 0.5;
1279
1280   gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1281
1282   dm[0] -= 1.218511934;
1283   dm[1] -= 1.218511934;
1284   dm[2] = 0.35;
1285
1286   gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1287
1288   gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1289
1290   gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1291
1292   // empty space
1293
1294
1295   dm[0]= 21.035;
1296   dm[1]= 38.7205;
1297   dm[2]= 0.7;
1298   dm[3]= 50.15;
1299
1300   gMC->Gsposp("TRCE",11,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1301
1302   dm[0]= 22.2935;
1303   dm[1]= 40.5085;
1304   dm[2]= 2.25;
1305   dm[3]= 51.65;
1306
1307   gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1308
1309
1310   dm[0]= 21.35;
1311   dm[1]= 38.7205;
1312   dm[2]= 2.25;
1313   dm[3]= 50.15;
1314
1315   gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1316
1317
1318   //-----------------------------------------------
1319   // Tpc Services Support Wheel
1320   //-----------------------------------------------
1321
1322   dm[0]=0.;
1323   dm[1]=360.;
1324   dm[2]=18.;
1325   dm[3]=2.;
1326
1327   dm[4]= -5.;
1328   dm[5]= 77.017;
1329   dm[6]= 255.267;
1330
1331   dm[7]= 5.;
1332   dm[8]= dm[5];
1333   dm[9]= dm[6];
1334
1335   gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1336
1337   // Tpc Services Wheel Cover
1338
1339   dm[4]= -0.5;
1340   dm[7]= 0.5;
1341
1342   gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1343
1344   // Tpc Service wheel Cover Empty space
1345
1346   dm[0]= 10.99;
1347   dm[1]= 39.599;
1348   dm[2]= .5;
1349   dm[3]= 81.125;
1350
1351   gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1352
1353   // Tpc services Wheel Empty Spaces
1354
1355   dm[0]= 13.18017507;
1356   dm[1]= 44.61045938;
1357   dm[2]= 4.;
1358   dm[3]= 89.125;
1359
1360   gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1361
1362   // Tpc Services Wheel Bars
1363
1364   gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1365
1366   // bars-> TWES
1367
1368   dm[2]= 4.;
1369   dm[3]= .4;
1370
1371   dm[0]= 13.8149522;
1372   dm[1]= 13.95601379;
1373
1374   gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1375
1376   dm[0]= 43.83462067;
1377   dm[1]= 43.97568225;
1378
1379   gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1380
1381   // TPc ELectronics - right now 30% X0 Si
1382
1383   dm[0]= 14.03813696;
1384   dm[1]= 43.3524075;
1385   dm[2]= 1.404;
1386   dm[3]= 83.125;
1387
1388   gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1389   gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1390
1391   //--------------------------------------------------------------------------
1392   //  End caps
1393   //--------------------------------------------------------------------------
1394
1395   // TPc Main Wheel - Al
1396
1397   dm[0]= 75.3;
1398   dm[1]= 264.8;
1399   dm[2]= 3.0;
1400
1401   gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1402
1403   // TPc Extra Wheel (to avoid overlapping) - Al
1404
1405   dm[0]= 264.8;
1406   dm[1]= 277.0;
1407   dm[2]= 1.95;
1408
1409   gMC->Gsvolu("TPEW","TUBE",idtmed[4],dm,3);
1410
1411   //--------------------------------------------------------------------------
1412   //  Tpc Empty Space for the Readout chambers
1413   //--------------------------------------------------------------------------
1414
1415   Float_t rLow= 86.2;
1416   Float_t rUp= 243.5;
1417   Float_t dR = 0.5*(rUp-rLow);
1418
1419   space= 1.4/cosAlpha; // wheel ribs are 2.8 cm wide
1420
1421   dm[0]= rLow*tanAlpha-space;
1422   dm[1]= rUp*tanAlpha-space;
1423   dm[2]= 3.0;
1424   dm[3]= dR;
1425
1426   gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1427
1428   // TIC1->TESR
1429
1430
1431   gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1432
1433
1434   // TOC1->TESR
1435
1436   gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1437
1438   // Tpc Empty Space Bars - Al (daughters of TESR)
1439
1440   Float_t zBar;
1441
1442   gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1443
1444   // lower bar
1445
1446   dm[0]= rLow*tanAlpha-space;
1447   dm[1]= 88.7*tanAlpha-space;
1448   dm[2]= 0.95;
1449   dm[3]= 1.275;
1450
1451   zBar = -dR+dm[3];
1452
1453   gMC->Gsposp("TESB",1,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1454
1455   // middle bar
1456
1457   dm[0]= 131.65*tanAlpha-space;
1458   dm[1]= 136.5*tanAlpha-space;
1459   dm[3]= 2.425;
1460
1461   zBar = -dR +131.65+dm[3]-rLow;
1462
1463   gMC->Gsposp("TESB",2,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1464
1465   // upper bar
1466
1467   dm[0]= 240.4*tanAlpha-space;
1468   dm[1]= rUp*tanAlpha-space;
1469   dm[3]= 1.55;
1470
1471   zBar = dR-dm[3];
1472
1473   gMC->Gsposp("TESB",3,"TESR",0.,2.05,zBar,0,"ONLY",dm,4);
1474
1475   //------------------------------------------------------
1476   //  TPc Lower "S" Sectors
1477   //------------------------------------------------------
1478
1479   Float_t deadSpace;
1480
1481
1482   Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1483   Float_t inSecUpEdge =  fTPCParam->GetInnerRadiusUp();
1484
1485   dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1486   dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1487   dm[2] = 0.5*(250. - 0.3);
1488   dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);
1489
1490   gMC->Gsvolu("TPLS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1491
1492   //----------------------------------------------------------
1493   //  TPc Upper Sectors
1494   //----------------------------------------------------------
1495
1496   Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1497   Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1498
1499   dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1500   dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1501   dm[2] = 0.5*(250. - 0.3);
1502   dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1503
1504   gMC->Gsvolu("TPUS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1505
1506   //--------------------------------------------------------
1507   // TPc Sensitive Strips, the same for S and L sectors
1508   //--------------------------------------------------------
1509
1510   gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1511
1512   Int_t nofStrips,nstr;
1513   Float_t r1,r2,zs;
1514   Float_t stripThick = 0.01; // 100 microns
1515
1516   // inner sector
1517
1518   nofStrips = fTPCParam->GetNRowLow();
1519   deadSpace = fTPCParam->GetInnerWireMount();
1520
1521   dm[2] = 0.5*(250. - 0.3);
1522   dm[3] = 0.5 * stripThick;
1523
1524   for(nstr=0;nstr<nofStrips;nstr++){
1525
1526     r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1527     r2 = r1 + stripThick;
1528     dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1529     dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1530     zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1531     zs += r1;
1532     zs += dm[3];
1533
1534     gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1535
1536   }
1537
1538   Int_t nsSave = nofStrips;
1539
1540   // outer sector
1541
1542   nofStrips = fTPCParam->GetNRowUp();
1543   deadSpace = fTPCParam->GetOuterWireMount();
1544
1545   dm[2] = 0.5*(250. - 0.3);
1546   dm[3] = 0.5 * stripThick;
1547
1548    for(nstr=0;nstr<nofStrips;nstr++){
1549
1550     r1 = fTPCParam->GetPadRowRadiiUp(nstr);
1551     r2 = r1 + stripThick;
1552     dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1553     dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1554     zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1555     zs += r1;
1556     zs += dm[3];
1557
1558     gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1559
1560    }
1561
1562
1563   //-------------------------------------------------------
1564   //  positioning of the empty spaces into the main wheel
1565   //  and readout chambers and sectors into the drift gas
1566   //-------------------------------------------------------
1567
1568   Float_t rCenter,xc,yc;
1569   Float_t rInner,rOuter; // center of the inner and outer chamber
1570
1571   rCenter = rLow+dR;
1572
1573   rInner = 108.07;
1574   rOuter = 190.68;
1575
1576   for(Int_t ns=0; ns<nInnerSector;ns++){
1577
1578     phi1 = ns * innerOpenAngle + innerAngleShift;
1579     phi1 *= kRaddeg; // in degrees
1580
1581     phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1582
1583     if (phi1 > 360.) phi1 -= 360.;
1584
1585     theta1 = 90.;
1586     phi2   = 90.;
1587     theta2 = 180.;
1588     phi3   = ns * innerOpenAngle + innerAngleShift;
1589     phi3 *= kRaddeg; // in degrees
1590
1591     phi3 = (Float_t)TMath::Nint(phi3);
1592
1593     if(phi3 > 360.) phi3 -= 360.;
1594
1595     theta3 = 90.;
1596
1597     // "holes"->End plate
1598
1599     xc = rCenter*TMath::Cos(phi3*kDegrad);
1600     yc = rCenter*TMath::Sin(phi3*kDegrad);
1601
1602     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1603
1604     gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1605
1606     // TSCE->TSWC (services wheel volumes)
1607
1608     xc = 166.142*TMath::Cos(phi3*kDegrad);
1609     yc = 166.142*TMath::Sin(phi3*kDegrad);
1610
1611     gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1612     gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1613
1614
1615     // readout chambers->TDGN (drift gas)
1616
1617     xc = rInner*TMath::Cos(phi3*kDegrad);
1618     yc = rInner*TMath::Sin(phi3*kDegrad);
1619
1620     gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1621
1622     // here lower sectors
1623
1624     gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1625     gMC->Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1626
1627     xc = rOuter*TMath::Cos(phi3*kDegrad);
1628     yc = rOuter*TMath::Sin(phi3*kDegrad);
1629
1630     gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1631
1632     // here upper sectors
1633
1634     gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.15,idrotm[nRotMat],"ONLY");
1635     gMC->Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.15,idrotm[nRotMat],"ONLY");
1636
1637     nRotMat++;
1638
1639     theta2 = 0.; // reflection
1640
1641     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1642
1643     xc = rInner*TMath::Cos(phi3*kDegrad);
1644     yc = rInner*TMath::Sin(phi3*kDegrad);
1645
1646     gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1647
1648     xc = rOuter*TMath::Cos(phi3*kDegrad);
1649     yc = rOuter*TMath::Sin(phi3*kDegrad);
1650
1651     gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1652
1653     nRotMat++;
1654
1655   }
1656
1657   // reflection matrix
1658
1659   theta1 = 90.;
1660   phi1   = 0.;
1661   theta2 = 90.;
1662   phi2   = 270.;
1663   theta3 = 180.;
1664   phi3   = 0.;
1665
1666   AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1667
1668
1669   // TPMW->TPC
1670
1671   gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1672   gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[nRotMat],"ONLY");
1673   gMC->Gspos("TPEW",1,"TPC ",0.,0.,257.65,0,"ONLY");
1674   gMC->Gspos("TPEW",2,"TPC ",0.,0.,-257.5,0,"ONLY");
1675
1676
1677
1678   //-------------------------------------------------------
1679   // Tpc High Voltage Membrane - NOMEX honeycomb
1680   //-------------------------------------------------------
1681
1682   dm[0]=0.,
1683   dm[1]=360.;
1684   dm[2]=18.;
1685   dm[3]=2.;
1686
1687   //
1688
1689   dm[4]= -0.3;
1690   dm[5]= 81.156;
1691   dm[6]= 253.386;
1692
1693   //
1694
1695   dm[7]= 0.3;
1696   dm[8]= dm[5];
1697   dm[9]= dm[6];
1698
1699   gMC->Gsvolu("THVM","PGON",idtmed[6],dm,10);
1700
1701   gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1702
1703   //----------------------------------------------------------
1704   // TPc Support Rods - MAKROLON
1705   //----------------------------------------------------------
1706
1707   dm[0]= 0.9;
1708   dm[1]= 1.2;
1709   dm[2]= 126.65;
1710
1711   gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,3);
1712
1713   for(Int_t nrod=1;nrod<18;nrod++){
1714     Float_t angle=innerOpenAngle*(Float_t)nrod;
1715
1716     xc=82.4*TMath::Cos(angle);
1717     yc=82.4*TMath::Sin(angle);
1718
1719     gMC->Gspos("TPSR",nrod,"TDGN",xc,yc,126.95,0,"ONLY");
1720     gMC->Gspos("TPSR",nrod+17,"TDGN",xc,yc,-126.95,0,"ONLY");
1721
1722     xc=254.2*TMath::Cos(angle);
1723     yc=254.2*TMath::Sin(angle);
1724
1725     gMC->Gspos("TPSR",nrod+34,"TDGN",xc,yc,126.95,0,"ONLY");
1726     gMC->Gspos("TPSR",nrod+51,"TDGN",xc,yc,-126.95,0,"ONLY");
1727
1728   }
1729
1730   //----------------------------------------------------------
1731   // Tpc High Voltage rod - MAKROLON + Copper cable
1732   //----------------------------------------------------------
1733
1734   // rod with cable (Left)
1735
1736   dm[0]=0.;
1737   dm[1]=2.25;
1738   dm[2]=126.65;
1739
1740   gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1741
1742   // HV cable
1743
1744   dm[0]=0.;
1745   dm[1]=0.3;
1746   dm[2]=126.65;
1747
1748   gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1749
1750   // empty space
1751
1752   dm[0]=0.3;
1753   dm[1]=1.;
1754   dm[2]=126.65;
1755
1756   gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1757
1758   gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1759   gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1760
1761   // rod without cable
1762
1763   dm[0]=1.8;
1764   dm[1]=2.25;
1765   dm[2]=126.65;
1766
1767   gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1768
1769
1770
1771   gMC->Gspos("THVL",1,"TDGN",82.4,0.,-126.95,0,"ONLY");
1772   gMC->Gspos("THVL",2,"TDGN",254.2,0.,-126.95,0,"ONLY");
1773
1774   gMC->Gspos("THVR",1,"TDGN",82.4,0.,126.95,0,"ONLY");
1775   gMC->Gspos("THVR",2,"TDGN",254.2,0.,126.95,0,"ONLY");
1776
1777
1778
1779   gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY");
1780
1781   // services wheel cover -> wheel
1782
1783
1784   gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1785   gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1786
1787
1788   // put the wheel into the TPC
1789
1790   gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1791   gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1792
1793   gMC->Gsord("TPMW",6);
1794   gMC->Gsord("TPLS",3);
1795   gMC->Gsord("TPUS",3);
1796   gMC->Gsord("TDGN",6);
1797   gMC->Gsord("TSSW",6);
1798   gMC->Gsord("TSWC",6);
1799
1800   // put the TPC into ALIC (main mother volume)
1801
1802   gMC->Gspos("TPC ", 1, "ALIC", 0, 0, 0, 0, "ONLY");
1803
1804
1805 } // end of function
1806
1807 //_____________________________________________________________________________
1808 void AliTPCv1::DrawDetector()
1809 {
1810   //
1811   // Draw a shaded view of the Time Projection Chamber version 1
1812   //
1813
1814   // Set everything unseen
1815   gMC->Gsatt("*", "seen", -1);
1816   //
1817   // Set ALIC mother transparent
1818   gMC->Gsatt("ALIC","SEEN",0);
1819   //
1820   // Set the volumes visible
1821   gMC->Gsatt("TPC ","SEEN",0);
1822   gMC->Gsatt("TOIN","SEEN",1);
1823   gMC->Gsatt("TOIN","COLO",7);
1824   gMC->Gsatt("TPCR","SEEN",0);
1825   gMC->Gsatt("TOCV","SEEN",1);
1826   gMC->Gsatt("TOCV","COLO",4);
1827   gMC->Gsatt("TSA1","SEEN",0);
1828   gMC->Gsatt("TSA2","SEEN",0);
1829   gMC->Gsatt("TSA3","SEEN",0);
1830   gMC->Gsatt("TSA4","SEEN",0);
1831   gMC->Gsatt("TOFC","SEEN",1);
1832   gMC->Gsatt("TOFC","COLO",4);
1833   gMC->Gsatt("TSA5","SEEN",0);
1834   gMC->Gsatt("TSA6","SEEN",0);
1835   gMC->Gsatt("TSA7","SEEN",0);
1836   gMC->Gsatt("TIIN","COLO",7);
1837   gMC->Gsatt("TIIN","SEEN",1);
1838   gMC->Gsatt("TICL","SEEN",0);
1839   gMC->Gsatt("TSA9","SEEN",0);
1840   gMC->Gsatt("TS10","SEEN",0);
1841   gMC->Gsatt("TS11","SEEN",0);
1842   gMC->Gsatt("TS12","SEEN",0);
1843   gMC->Gsatt("TICR","SEEN",0);
1844   gMC->Gsatt("TS13","SEEN",0);
1845   gMC->Gsatt("TS14","SEEN",0);
1846   gMC->Gsatt("TS15","SEEN",0);
1847   gMC->Gsatt("TS16","SEEN",0);
1848   gMC->Gsatt("TIFC","SEEN",1);
1849   gMC->Gsatt("TIFC","COLO",4);
1850   gMC->Gsatt("TS17","SEEN",0);
1851   gMC->Gsatt("TS18","SEEN",0);
1852   gMC->Gsatt("TS19","SEEN",0);
1853   gMC->Gsatt("TS21","SEEN",0);
1854   gMC->Gsatt("TS22","SEEN",0);
1855   gMC->Gsatt("TS23","SEEN",0);
1856   gMC->Gsatt("TS24","SEEN",0);
1857   gMC->Gsatt("TDGN","SEEN",0);
1858   gMC->Gsatt("TIRC","SEEN",0);
1859   gMC->Gsatt("TIC1","SEEN",1);
1860   gMC->Gsatt("TIPP","SEEN",0);
1861   gMC->Gsatt("TIC3","SEEN",0);
1862   gMC->Gsatt("TRCE","SEEN",0);
1863   gMC->Gsatt("TPSC","SEEN",0);
1864   gMC->Gsatt("TPCC","SEEN",0);
1865   gMC->Gsatt("TORC","SEEN",0);
1866   gMC->Gsatt("TOPP","SEEN",0);
1867   gMC->Gsatt("TOC3","SEEN",0);
1868   gMC->Gsatt("TOC1","SEEN",1);
1869   gMC->Gsatt("TSSW","SEEN",1);
1870   gMC->Gsatt("TSWC","SEEN",1);
1871   gMC->Gsatt("TSCE","SEEN",1);
1872   gMC->Gsatt("TSSW","COLO",3);
1873   gMC->Gsatt("TSWC","COLO",3);
1874   gMC->Gsatt("TSCE","COLO",6);
1875   gMC->Gsatt("TWES","SEEN",0);
1876   gMC->Gsatt("TSWB","SEEN",0);
1877   gMC->Gsatt("TPEL","SEEN",0);
1878   gMC->Gsatt("TPMW","SEEN",1);
1879   gMC->Gsatt("TPEW","SEEN",1);
1880   gMC->Gsatt("TESR","SEEN",1);
1881   gMC->Gsatt("TPMW","COLO",12);
1882   gMC->Gsatt("TPEW","COLO",12);
1883   gMC->Gsatt("TWES","COLO",5);
1884   gMC->Gsatt("TIC1","COLO",5);
1885   gMC->Gsatt("TOC1","COLO",5);
1886   gMC->Gsatt("TESB","SEEN",0);
1887   gMC->Gsatt("TPLS","SEEN",0);
1888   gMC->Gsatt("TPUS","SEEN",0);
1889   gMC->Gsatt("TPSS","SEEN",0);
1890   gMC->Gsatt("THVM","SEEN",1);
1891   gMC->Gsatt("THVM","COLO",11);
1892   gMC->Gsatt("TPSR","SEEN",0);
1893   gMC->Gsatt("THVL","SEEN",0);
1894   gMC->Gsatt("THVC","SEEN",0);
1895   gMC->Gsatt("THVE","SEEN",0);
1896   gMC->Gsatt("THVR","SEEN",0);
1897
1898   gMC->Gdopt("hide", "on");
1899   gMC->Gdopt("shad", "on");
1900   gMC->Gsatt("*", "fill", 7);
1901   gMC->SetClipBox(".");
1902   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1903   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1904   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1905   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1906   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1907   gMC->DefaultRange();
1908   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1909   gMC->Gdhead(1111, "Time Projection Chamber");
1910   gMC->Gdman(18, 4, "MAN");
1911   gMC->Gdopt("hide","off");
1912 }
1913
1914 //_____________________________________________________________________________
1915 void AliTPCv1::CreateMaterials()
1916 {
1917   //
1918   // Define materials for Time Projection Chamber
1919   //
1920   AliTPC::CreateMaterials();
1921 }
1922
1923 //_____________________________________________________________________________
1924 void AliTPCv1::Init()
1925 {
1926   //
1927   // Initialises TPC detector after it has been created
1928   //
1929
1930   fIdSens=gMC->VolId("TPSS"); // sensitive strip
1931   fIdLSec=gMC->VolId("TPLS"); // lower sector
1932   fIdUSec=gMC->VolId("TPUS"); // upper sector
1933
1934   printf("TPC version 1 initialized\n");
1935 }
1936
1937 //_____________________________________________________________________________
1938 void AliTPCv1::StepManager()
1939 {
1940   //
1941   // Called at every step in the Time Projection Chamber
1942   //
1943   Int_t         copy, id, i;
1944   Float_t       hits[4];
1945   Int_t         vol[2];
1946   TLorentzVector p;
1947  //
1948
1949   if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1950
1951     //
1952     // Only charged tracks entering the sensitive volume
1953     //
1954
1955     id = gMC->CurrentVolID(copy);
1956
1957     if(id == fIdSens){
1958
1959       // sensitive volume (strip)
1960
1961       vol[1]= copy-1; // row number (absolute)
1962
1963       // sector type
1964
1965       id = gMC->CurrentVolOffID(1,copy);
1966
1967       if(id == fIdLSec){
1968
1969         // lower sector
1970
1971         vol[0] = copy-1; // sector number
1972
1973       }
1974       else {
1975
1976         // upper sector
1977
1978         vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
1979         vol[1] -= fTPCParam->GetNRowLow(); // row number
1980
1981       }
1982
1983       if(vol[1] == 0){
1984
1985         // because Jouri wants to have this
1986
1987         gMC->TrackMomentum(p);
1988         hits[0]=p[0];
1989         hits[1]=p[1];
1990         hits[2]=p[2];
1991         hits[3]=0.; // this hit has no energy loss
1992         // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1993
1994         AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
1995
1996         gMC->TrackPosition(p);
1997         hits[0]=p[0];
1998         hits[1]=p[1];
1999         hits[2]=p[2];
2000         hits[3]=0.; // this hit has no energy loss
2001         // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2002
2003         AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
2004
2005       }
2006
2007       gMC->TrackPosition(p);
2008       for(i=0;i<3;++i) hits[i]=p[i];
2009       hits[3]=1; //I'd like to have something positive here (I.Belikov)
2010       // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->CurrentTrack(),vol,hits);
2011
2012       AddHit(gAlice->CurrentTrack(), vol,hits); // M.I.
2013
2014     }
2015
2016   }
2017
2018 }
2019 //_____________________________________________________________________________
2020
2021
2022