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 /* $Id$ */
  17
  18 //
  19 ///////////////////////////////////////////////////////////////////////////////
  20 //                                                                           //
  21 //  Time Projection Chamber version 1 -- detailed TPC and fast simulation    //
  22 //                                                                           //
  23 //Begin_Html
  24 /*
  25 <img src="picts/AliTPCv1Class.gif">
  26 */
  27 //End_Html
  28 //                                                                           //
  29 //                                                                           //
  30 ///////////////////////////////////////////////////////////////////////////////
  31
  32 #include <Riostream.h>
  33
  34 #include <TBRIK.h>
  35 #include <TGeometry.h>
  36 #include <TInterpreter.h>
  37 #include <TMath.h>
  38 #include <TNode.h>
  39 #include <TTUBE.h>
  40 #include <TVirtualMC.h>
  41
  42 #include "AliConst.h"
  43 #include "AliRun.h"
  44 #include "AliTPCDigitsArray.h"
  45 #include "AliTPCParam.h"
  46 #include "AliTPCParamSR.h"
  47 #include "AliTPCv1.h"
  48 #include "TLorentzVector.h"
  49
  50 ClassImp(AliTPCv1)
  51
  52 //_____________________________________________________________________________
  53
  54   AliTPCv1::AliTPCv1(){
  55
  56   fHitType = 1;
  57
  58 }
  59
  60 //_____________________________________________________________________________
  61 AliTPCv1::AliTPCv1(const char *name, const char *title)
  62   :AliTPC(name, title) {
  63   //
  64   // Standard constructor for Time Projection Chamber
  65   //
  66   fIdSens=fIdLSec=fIdUSec=0;
  67
  68   SetGasMixt(2,20,10,-1,0.9,0.1,0.);
  69
  70   if (fTPCParam)
  71      fTPCParam->Write(fTPCParam->GetTitle());
  72
  73   fHitType=1;
  74 }
  75
  76 //_____________________________________________________________________________
  77 void AliTPCv1::CreateGeometry()
  78 {
  79   //-------------------------------------------------------------
  80   // Creates geometry for Time Projection Chamber version 1
  81   // Detailed geometry -- Fast simulation - space points
  82   // at the pad-rows centers
  83   // Origin M.Kowalski, INP Cracow, Marek.Kowalski@ifj.edu.pl
  84   //-----------------------------------------------------------
  85
  86   //Begin_Html
  87   /*
  88     <img src="picts/AliTPC.gif">
  89   */
  90   //End_Html
  91   //Begin_Html
  92   /*
  93     <img src="picts/AliTPCv1Tree.gif">
  94   */
  95   //End_Html
  96   Float_t dm[50];
  97
  98   Int_t *idtmed = fIdtmed->GetArray(); // TPC media
  99
 100   Int_t idrotm[120]; // rotation matrices
 101
 102   Int_t nRotMat = 0; // actual number of rotation matrices
 103
 104   //
 105   //  Mother volume TPC (Air) - all volumes will be positioned in it
 106   //
 107
 108   dm[0]=0.;
 109   dm[1]=360.;
 110   dm[2]=8.;
 111
 112   //
 113
 114   dm[3]=-283.7;
 115   dm[4]=65.6;
 116   dm[5]=278.;
 117
 118   //
 119
 120   dm[6]=-253.6;
 121   dm[7]=65.6;
 122   dm[8]=278.;
 123
 124   //
 125
 126   dm[9]=-73.3;
 127   dm[10]=60.9;
 128   dm[11]=278.;
 129
 130   //
 131
 132   dm[12]=-73.3;
 133   dm[13]=56.9;
 134   dm[14]=278.;
 135
 136   //
 137
 138   dm[15]=73.3;
 139   dm[16]=56.9;
 140   dm[17]=278.;
 141
 142   //
 143
 144   dm[18]=73.3;
 145   dm[19]=60.9;
 146   dm[20]=278.;
 147
 148   //
 149
 150   dm[21]=253.6;
 151   dm[22]=65.6;
 152   dm[23]=278.;
 153
 154   //
 155
 156   dm[24]=283.7;
 157   dm[25]=65.6;
 158   dm[26]=278.;
 159
 160   gMC->Gsvolu("TPC ","PCON",idtmed[0],dm,27);
 161
 162   // outer part
 163
 164   //-------------------------------------------------------------------
 165   //   Tpc Outer INsulator (CO2) - contains cont. vessel and field cage
 166   //-------------------------------------------------------------------
 167
 168   dm[0]= 0.;
 169   dm[1]= 360.;
 170   dm[2]= 6.;
 171
 172   //
 173
 174   dm[3]=-253.6;
 175   dm[4]=258.;
 176   dm[5]=275.5;
 177
 178   //
 179
 180   dm[6]=-250.6;
 181   dm[7]=258.;
 182   dm[8]=275.5;
 183
 184   //
 185
 186   dm[9]=-250.6;
 187   dm[10]=258.;
 188   dm[11]=278.;
 189
 190   //
 191
 192   dm[12]=253.6;
 193   dm[13]=258.;
 194   dm[14]=278.;
 195
 196   //
 197
 198   dm[15]=253.6;
 199   dm[16]=264.8;
 200   dm[17]=278.;
 201
 202   //
 203
 204   dm[18]=256.6;
 205   dm[19]=264.8;
 206   dm[20]=278.;
 207
 208   gMC->Gsvolu("TOIN","PCON",idtmed[3],dm,21);
 209
 210   //----------------------------------------------------------------
 211   // Tpc Outer Contaiment Vessel
 212   //  mother volume - Al, daughters - composite (sandwich)
 213   //----------------------------------------------------------------
 214
 215   dm[0]=0.;
 216   dm[1]=360.;
 217   dm[2]=6.;
 218
 219   //
 220
 221   dm[3]=-250.6;
 222   dm[4]=270.4;
 223   dm[5]=278.;
 224
 225   //
 226
 227   dm[6]=-247.6;
 228   dm[7]=270.4;
 229   dm[8]=278.;
 230
 231   //
 232
 233   dm[9]=-247.6;
 234   dm[10]=274.8124;
 235   dm[11]=278.;
 236
 237   //
 238
 239   dm[12]=253.6;
 240   dm[13]=274.8124;
 241   dm[14]=278.;
 242
 243   //
 244
 245   dm[15]=253.6;
 246   dm[16]=264.8;
 247   dm[17]=278.;
 248
 249   //
 250
 251   dm[18]=256.6;
 252   dm[19]=264.8;
 253   dm[20]=278.;
 254
 255   gMC->Gsvolu("TOCV","PCON",idtmed[4],dm,21);
 256
 257   // Daughter volumes - sandwich
 258
 259   // Tpc SAndwich 1 - Al
 260
 261   dm[0]=274.8124;
 262   dm[1]=278.;
 263   dm[2]=252.1;
 264
 265   gMC->Gsvolu("TSA1","TUBE",idtmed[4],dm,3);
 266
 267   // Tpc SAndwich 2 - epoxy glue (I use Lexan)
 268
 269   dm[0] += 5.e-3;
 270   dm[1] -= 5.e-3;
 271
 272   gMC->Gsvolu("TSA2","TUBE",idtmed[14],dm,3);
 273
 274   // Tpc SAndwich 3 - Tedlar
 275
 276   dm[0] += 0.01;
 277   dm[1] -= 0.01;
 278
 279   gMC->Gsvolu("TSA3","TUBE",idtmed[9],dm,3);
 280
 281
 282   // Tpc SAndwich 4 - fiber glass (G10)
 283
 284   dm[0] += 3.8e-3;
 285   dm[1] -= 3.8e-3;
 286
 287   gMC->Gsvolu("TSA4","TUBE",idtmed[12],dm,3);
 288
 289   // Tpc SAndwich 5 - NOMEX honeycomb
 290
 291   dm[0] += 0.075;
 292   dm[1] -= 0.075;
 293
 294   gMC->Gsvolu("TSA5","TUBE",idtmed[6],dm,3);
 295
 296   // 5->4->3->2->1->TCOV
 297
 298
 299   gMC->Gspos("TSA5",1,"TSA4",0.,0.,0.,0,"ONLY");
 300   gMC->Gspos("TSA4",1,"TSA3",0.,0.,0.,0,"ONLY");
 301   gMC->Gspos("TSA3",1,"TSA2",0.,0.,0.,0,"ONLY");
 302   gMC->Gspos("TSA2",1,"TSA1",0.,0.,0.,0,"ONLY");
 303
 304   gMC->Gspos("TSA1",1,"TOCV",0.,0.,3.,0,"ONLY");
 305
 306   // TCOV-> TOIN
 307
 308   gMC->Gspos("TOCV",1,"TOIN",0.,0.,0.,0,"ONLY");
 309
 310   //-------------------------------------------------------
 311   //  Tpc Outer Field Cage
 312   //  mother volume - Al, daughters - composite (sandwich)
 313   //-------------------------------------------------------
 314
 315   dm[0]=0.;
 316   dm[1]=360.;
 317   dm[2]=6.;
 318
 319   //
 320
 321   dm[3]=-253.6;
 322   dm[4]=258.;
 323   dm[5]=275.5;
 324
 325   //
 326
 327   dm[6]=-250.6;
 328   dm[7]=258.;
 329   dm[8]=275.5;
 330
 331   //
 332
 333   dm[9]=-250.6;
 334   dm[10]=258.;
 335   dm[11]=260.0476;
 336
 337   //
 338
 339   dm[12]=250.6;
 340   dm[13]=258.;
 341   dm[14]=260.0476;
 342
 343   //
 344
 345   dm[15]=250.6;
 346   dm[16]=258.;
 347   dm[17]=269.6;
 348
 349   //
 350
 351   dm[18]=253.6;
 352   dm[19]=258.;
 353   dm[20]=269.6;
 354
 355   gMC->Gsvolu("TOFC","PCON",idtmed[4],dm,21);
 356
 357   // Daughter volumes
 358
 359   // Tpc SAndwich 6 - Tedlar
 360
 361   dm[0]= 258.;
 362   dm[1]= 260.0476;
 363   dm[2]= 252.1;
 364
 365   gMC->Gsvolu("TSA6","TUBE",idtmed[9],dm,3);
 366
 367   // Tpc SAndwich 7 - fiber glass
 368
 369   dm[0] += 3.8e-3;
 370   dm[1] -= 3.8e-3;
 371
 372   gMC->Gsvolu("TSA7","TUBE",idtmed[12],dm,3);
 373
 374
 375   // Tpc SAndwich 8 - NOMEX
 376
 377   dm[0] += 0.02;
 378   dm[1] -= 0.02;
 379
 380   gMC->Gsvolu("TSA8","TUBE",idtmed[6],dm,3);
 381
 382   // 8->7->6->TOFC
 383
 384   gMC->Gspos("TSA8",1,"TSA7",0.,0.,0.,0,"ONLY");
 385   gMC->Gspos("TSA7",1,"TSA6",0.,0.,0.,0,"ONLY");
 386   gMC->Gspos("TSA6",1,"TOFC",0.,0.,0.,0,"ONLY");
 387
 388   // TOFC->TOIN
 389
 390   gMC->Gspos("TOFC",1,"TOIN",0.,0.,0.,0,"ONLY");
 391
 392   // TOIN->TPC
 393
 394   gMC->Gspos("TOIN",1,"TPC ",0.,0.,0.,0,"ONLY");
 395
 396   // inner part
 397
 398   //--------------------------------------------------------------------
 399   // Tpc Inner INsulator (CO2) - inner f.c. will be placed there
 400   // Inner containment vessel will be placed directly in the TPC
 401   //--------------------------------------------------------------------
 402
 403   dm[0]=0.;
 404   dm[1]=360.;
 405   dm[2]=4.;
 406
 407   //
 408
 409   dm[3]=-253.6;
 410   dm[4]=65.9;
 411   dm[5]=79.2;
 412
 413   //
 414
 415   dm[6]=-73.3;
 416   dm[7]=61.2;
 417   dm[8]=79.2;
 418
 419   //
 420
 421   dm[9]=73.3;
 422   dm[10]=61.2;
 423   dm[11]=79.2;
 424
 425   //
 426
 427   dm[12]=253.6;
 428   dm[13]=65.9;
 429   dm[14]=79.2;
 430
 431   gMC->Gsvolu("TIIN","PCON",idtmed[3],dm,15);
 432
 433   // the middle part of the F.C. is thinner - carve out the strip - Ne-CO2
 434
 435   dm[0]=79.16;
 436   dm[1]=79.2;
 437   dm[2]=88.;
 438
 439   gMC->Gsvolu("TII1","TUBE",idtmed[1],dm,3);
 440
 441   gMC->Gspos("TII1",1,"TIIN",0.,0.,0.,0,"ONLY");
 442
 443   //-----------------------------------------------------
 444   // Tpc Inner Field Cage
 445   // mother volume - Al, daughters - composite (sandwich)
 446   //------------------------------------------------------
 447
 448   dm[0]=0.;
 449   dm[1]=360.;
 450   dm[2]=10.;
 451
 452   //
 453
 454   dm[3]=-253.6;
 455   dm[4]=70.3;
 456   dm[5]=79.2;
 457
 458   //
 459
 460   dm[6]=-250.6;
 461   dm[7]=70.3;
 462   dm[8]=79.2;
 463
 464   //
 465
 466   dm[9]=-250.6;
 467   dm[10]=77.0524;
 468   dm[11]=79.2;
 469
 470   //
 471
 472   dm[12]=-88.;
 473   dm[13]=77.0524;
 474   dm[14]=79.2;
 475
 476   //
 477
 478   dm[15]=-88.;
 479   dm[16]=77.0924;
 480   dm[17]=79.16;
 481
 482   //
 483
 484   dm[18]=88.;
 485   dm[19]=77.0924;
 486   dm[20]=79.16;
 487
 488   //
 489
 490   dm[21]=88.;
 491   dm[22]=77.0524;
 492   dm[23]=79.2;
 493
 494   //
 495
 496   dm[24]=250.6;
 497   dm[25]=77.0524;
 498   dm[26]=79.2;
 499
 500   //
 501
 502   dm[27]=250.6;
 503   dm[28]=70.3;
 504   dm[29]=79.2;
 505
 506   //
 507
 508   dm[30]=253.6;
 509   dm[31]=70.3;
 510   dm[32]=79.2;
 511
 512   gMC->Gsvolu("TIFC","PCON",idtmed[4],dm,33);
 513
 514   // daughter volumes - central part
 515
 516   // Tpc Sandwich 9 -Tedlar
 517
 518   dm[0]=77.0924;
 519   dm[1]=79.16;
 520   dm[2]=88.;
 521
 522   gMC->Gsvolu("TSA9","TUBE",idtmed[9],dm,3);
 523
 524   // Tpc Sandwich 10 - fiber glass (G10)
 525
 526   dm[0] += 3.8e-3;
 527   dm[1] -= 3.8e-3;
 528
 529   gMC->Gsvolu("TS10","TUBE",idtmed[12],dm,3);
 530
 531   // Tpc Sandwich 11 - NOMEX
 532
 533   dm[0] += 0.03;
 534   dm[1] -= 0.03;
 535
 536   gMC->Gsvolu("TS11","TUBE",idtmed[6],dm,3);
 537
 538   // 11->10->9->TIFC
 539
 540   gMC->Gspos("TS11",1,"TS10",0.,0.,0.,0,"ONLY");
 541   gMC->Gspos("TS10",1,"TSA9",0.,0.,0.,0,"ONLY");
 542
 543   gMC->Gspos("TSA9",1,"TIFC",0.,0.,0.,0,"ONLY");
 544
 545   // daughter volumes - outer parts (reinforced)
 546
 547   // Tpc Sandwich 12 -Tedlar
 548
 549   dm[0]=77.0524;
 550   dm[1]=79.2;
 551   dm[2]=82.05;
 552
 553   gMC->Gsvolu("TS12","TUBE",idtmed[9],dm,3);
 554
 555   // Tpc Sandwich 13 - fiber glass (G10)
 556
 557   dm[0] += 3.8e-3;
 558   dm[1] -= 3.8e-3;
 559
 560   gMC->Gsvolu("TS13","TUBE",idtmed[12],dm,3);
 561
 562   // Tpc Sandwich 14 - NOMEX
 563
 564   dm[0] += 0.07;
 565   dm[1] -= 0.07;
 566
 567   gMC->Gsvolu("TS14","TUBE",idtmed[6],dm,3);
 568
 569   // 14->13->12->TIFC
 570
 571   gMC->Gspos("TS14",1,"TS13",0.,0.,0.,0,"ONLY");
 572   gMC->Gspos("TS13",1,"TS12",0.,0.,0.,0,"ONLY");
 573
 574   gMC->Gspos("TS12",1,"TIFC",0.,0.,170.05,0,"ONLY");
 575   gMC->Gspos("TS12",2,"TIFC",0.,0.,-170.05,0,"ONLY");
 576
 577   // place this inside the inner insulator
 578
 579   gMC->Gspos("TIFC",1,"TIIN",0.,0.,0.,0,"ONLY");
 580
 581   // and now in the TPC...
 582
 583   gMC->Gspos("TIIN",1,"TPC ",0.,0.,0.,0,"ONLY");
 584
 585   //---------------------------------------------------------
 586   // Tpc Inner Containment vessel - Cones
 587   //---------------------------------------------------------
 588
 589   dm[0]=0.;
 590   dm[1]=360.;
 591   dm[2]=8.;
 592
 593   //
 594
 595   dm[3]=71.8;
 596   dm[4]=56.9;
 597   dm[5]=59.4;
 598
 599   //
 600
 601   dm[6]=73.;
 602   dm[7]=56.9;
 603   dm[8]=59.4;
 604
 605   //
 606
 607   dm[9]=73.;
 608   dm[10]=56.9;
 609   dm[11]=61.2;
 610
 611   //
 612
 613   dm[12]=73.3;
 614   dm[13]=56.9;
 615   dm[14]=61.2;
 616
 617   //
 618
 619   dm[15]=73.3;
 620   dm[16]=60.9;
 621   dm[17]=61.2;
 622
 623   //
 624
 625   dm[18]=253.6;
 626   dm[19]=65.6;
 627   dm[20]=65.9;
 628
 629   //
 630
 631   dm[21]=253.6;
 632   dm[22]=65.6;
 633   dm[23]=74.6;
 634
 635   //
 636
 637   dm[24]=256.6;
 638   dm[25]=65.6;
 639   dm[26]=74.6;
 640
 641   gMC->Gsvolu("TICC","PCON",idtmed[4],dm,27);
 642
 643   Float_t phi1,phi2,phi3,theta1,theta2,theta3; // rotation angles
 644
 645   // reflection matrix
 646
 647   theta1 = 90.;
 648   phi1   = 0.;
 649   theta2 = 90.;
 650   phi2   = 270.;
 651   theta3 = 180.;
 652   phi3   = 0.;
 653
 654   AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
 655
 656   gMC->Gspos("TICC",1,"TPC ",0.,0.,0.,0,"ONLY");
 657   gMC->Gspos("TICC",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
 658
 659
 660   //---------------------------------------------------------
 661   // Tpc Inner Containment vessel - Middle part -Al
 662   //---------------------------------------------------------
 663
 664   dm[0]=0.;
 665   dm[1]=360.;
 666   dm[2]=6.;
 667
 668   //
 669
 670   dm[3]=-71.6;
 671   dm[4]=60.2;
 672   dm[5]=61.2;
 673
 674   //
 675
 676   dm[6]=-69.1;
 677   dm[7]=60.2;
 678   dm[8]=61.2;
 679
 680   //
 681
 682   dm[9]=-69.1;
 683   dm[10]=60.6224;
 684   dm[11]=61.2;
 685
 686   //
 687
 688   dm[12]=69.1;
 689   dm[13]=60.6224;
 690   dm[14]=61.2;
 691
 692   //
 693
 694   dm[15]=69.1;
 695   dm[16]=60.2;
 696   dm[17]=61.2;
 697
 698   //
 699
 700   dm[18]=71.6;
 701   dm[19]=60.2;
 702   dm[20]=61.2;
 703
 704   gMC->Gsvolu("TICM","PCON",idtmed[4],dm,21);
 705
 706   // Tpc Sandwich 15 - Al
 707
 708   dm[0]=60.6224;
 709   dm[1]=61.2;
 710   dm[2]=70.1;
 711
 712   gMC->Gsvolu("TS15","TUBE",idtmed[4],dm,3);
 713
 714   // Tpc Sandwich 16 -  epoxy glue
 715
 716   dm[0] += 5.e-3;
 717   dm[1] -= 5.e-3;
 718
 719   gMC->Gsvolu("TS16","TUBE",idtmed[14],dm,3);
 720
 721   // Tpc Sandwich 17 - Tedlar
 722
 723   dm[0] += 0.01;
 724   dm[1] -= 0.01;
 725
 726   gMC->Gsvolu("TS17","TUBE",idtmed[9],dm,3);
 727
 728   // Tpc Sandwich 18 - carbon fiber
 729
 730   dm[0] += 3.8e-3;
 731   dm[1] -= 3.8e-3;
 732
 733   gMC->Gsvolu("TS18","TUBE",idtmed[15],dm,3);
 734
 735   // Tpc Sandwich 19 - Nomex
 736
 737   dm[0] += 0.02;
 738   dm[1] -= 0.02;
 739
 740   gMC->Gsvolu("TS19","TUBE",idtmed[6],dm,3);
 741
 742   // 19->18->17->16->15-> TICM
 743
 744   gMC->Gspos("TS19",1,"TS18",0.,0.,0.,0,"ONLY");
 745   gMC->Gspos("TS18",1,"TS17",0.,0.,0.,0,"ONLY");
 746   gMC->Gspos("TS17",1,"TS16",0.,0.,0.,0,"ONLY");
 747   gMC->Gspos("TS16",1,"TS15",0.,0.,0.,0,"ONLY");
 748
 749   gMC->Gspos("TS15",1,"TICM ",0.,0.,0.,0,"ONLY");
 750
 751
 752   // TPc inner cont. vessel Joints
 753
 754   dm[0]=60.2;
 755   dm[1]=61.2;
 756   dm[2]=0.5;
 757
 758   gMC->Gsvolu("TPJ1","TUBE",idtmed[4],dm,3);
 759
 760   gMC->Gspos("TPJ1",1,"TPC ",0.,0.,72.3,0,"ONLY");
 761   gMC->Gspos("TPJ1",2,"TPC ",0.,0.,-72.3,0,"ONLY");
 762
 763   //
 764
 765   dm[0]=0.;
 766   dm[1]=360.;
 767   dm[2]=4.;
 768
 769   //
 770
 771   dm[3]=70.8;
 772   dm[4]=58.4;
 773   dm[5]=60.1;
 774
 775   //
 776
 777   dm[6]=71.2;
 778   dm[7]=58.4;
 779   dm[8]=60.1;
 780
 781   //
 782
 783   dm[9]=71.2;
 784   dm[10]=58.4;
 785   dm[11]=59.4;
 786
 787   //
 788
 789   dm[12]=71.6;
 790   dm[13]=58.4;
 791   dm[14]=59.4;
 792
 793   gMC->Gsvolu("TPJ2","PCON",idtmed[4],dm,15);
 794
 795   gMC->Gspos("TPJ2",1,"TPC ",0.,0.,0.,0,"ONLY");
 796   gMC->Gspos("TPJ2",2,"TPC ",0.,0.,0.,idrotm[nRotMat],"ONLY");
 797
 798
 799
 800   // Tpc Inner Containment vessel Seal (Viton, I use Lexan for a time being)
 801
 802   dm[0]=58.4;
 803   dm[1]=61.2;
 804   dm[2]=0.1;
 805
 806   gMC->Gsvolu("TICS","TUBE",idtmed[14],dm,3);
 807
 808   gMC->Gspos("TICS",1,"TPC ",0.,0.,71.7,0,"ONLY");
 809   gMC->Gspos("TICS",2,"TPC ",0.,0.,-71.7,0,"ONLY");
 810
 811   // TICM -> TPC
 812
 813   gMC->Gspos("TICM",1,"TPC ",0.,0.,0.,0,"ONLY");
 814
 815   //
 816
 817   nRotMat++; // prepare for the next rotation matrix
 818
 819   //---------------------------------------------------------
 820   //  Tpc Dift Gas volume Nonsensitive (Ne-CO2 90/10)
 821   //  and its daughters (HV membrane, rods, readout chambers)
 822   //---------------------------------------------------------
 823
 824   dm[0]= 79.2;
 825   dm[1]= 258.0;
 826   dm[2]= 253.6;
 827
 828   gMC->Gsvolu("TDGN","TUBE",idtmed[1],dm,3);
 829
 830   // sector opening angles
 831
 832   Float_t innerOpenAngle = fTPCParam->GetInnerAngle();
 833   Float_t outerOpenAngle = fTPCParam->GetOuterAngle();
 834
 835   // sector angle shift
 836
 837   Float_t innerAngleShift = fTPCParam->GetInnerAngleShift();
 838
 839   // number of sectors
 840
 841   Int_t nInnerSector = fTPCParam->GetNInnerSector()/2;
 842   Int_t nOuterSector = fTPCParam->GetNOuterSector()/2;
 843
 844   // All above parameters are identical for inner and outer
 845   // sectors. The distinction is kept for the historical reasons
 846   // and eventually will disappear.
 847
 848   Float_t tanAlpha = TMath::Tan(0.5*innerOpenAngle);
 849   Float_t cosAlpha = TMath::Sqrt(1.+tanAlpha*tanAlpha);
 850   Float_t space;
 851
 852   //-------------------------------------------------------------------------
 853   //   Tpc Inner Readout Chambers
 854   //-------------------------------------------------------------------------
 855
 856   dm[0]= 14.483;
 857   dm[1]= 23.3345;
 858   dm[2]= 1.6; // thickness
 859   dm[3]= 25.1;
 860
 861   gMC->Gsvolu("TIRC","TRD1",idtmed[4],dm,4);
 862
 863   // this volume will be positioned in the empty space
 864   // of the end-cap to avoid overlaps
 865
 866   dm[0]= 13.7305;
 867   dm[1]= 21.1895;
 868   dm[2]= 2.25;
 869   dm[3]= 21.15;
 870
 871   gMC->Gsvolu("TIC1","TRD1",idtmed[4],dm,4);
 872
 873
 874   //------------------------------------------------
 875   // Tpc Inner readout chamber Pad Plane
 876   //------------------------------------------------
 877
 878   dm[0]= 14.483;
 879   dm[1]= 23.3345;
 880   dm[2]= 0.5;
 881   dm[3]= 25.1;
 882
 883   gMC->Gsvolu("TIPP","TRD1",idtmed[12],dm,4);
 884
 885   //
 886
 887   dm[0] -= 1.218511934;
 888   dm[1] -= 1.218511934;
 889   dm[2] = 0.35;
 890
 891   gMC->Gsvolu("TIC3","TRD1",idtmed[1],dm,4);
 892
 893   gMC->Gspos("TIC3",1,"TIPP",0.,0.15,0.,0,"ONLY");
 894
 895   gMC->Gspos("TIPP",1,"TIRC",0.,1.1,0.,0,"ONLY");
 896
 897
 898   //----------------------------------------------
 899   // Tpc Readout Chambers Empty spaces - for both
 900   // inner and outer sectors
 901   //----------------------------------------------
 902
 903   gMC->Gsvolu("TRCE","TRD1",idtmed[0],dm,0);
 904
 905   // Inner sector - 4 spaces
 906
 907
 908   dm[3] = 4.7625;
 909   dm[0] = 12.472;
 910
 911   Float_t rr = 90.52;
 912   Float_t zz;
 913
 914   zz= -12.7875;
 915
 916   space = rr*tanAlpha-dm[0];
 917
 918   for(Int_t nsLow=0;nsLow<4;nsLow++){
 919
 920     rr += 9.525;
 921     dm[1]= rr*tanAlpha - space;
 922
 923     dm[2]=0.8;
 924
 925     gMC->Gsposp("TRCE",nsLow+1,"TIRC",0.,-0.8,zz,0,"ONLY",dm,4);
 926
 927     //
 928
 929     dm[2] = 1.2;
 930
 931     gMC->Gsposp("TRCE",nsLow+5,"TIC1",0.,1.05,zz-2.1,0,"ONLY",dm,4);
 932
 933     rr += 0.4;
 934     dm[0] = rr*tanAlpha - space;
 935     zz += (0.4+9.525);
 936
 937   }
 938
 939   dm[0]= 12.472;
 940   // dm[1] - this is the dm[1] from the previous TRCE
 941   dm[2]= 1.05;
 942   dm[3]= 19.65;
 943
 944   gMC->Gsposp("TRCE",9,"TIC1",0.,-1.2,0.,0,"ONLY",dm,4);
 945
 946   //
 947   // TPc Space for Connectors
 948   //
 949
 950   dm[0]= .3;
 951   dm[1]= .3;
 952   dm[2]= 4.5;
 953
 954   gMC->Gsvolu("TPSC","BOX ",idtmed[0],dm,3);
 955
 956   // TPC Connectors
 957
 958   dm[0]= .25;
 959   dm[1]= .15;
 960   dm[2]= 3.75;
 961
 962   gMC->Gsvolu("TPCC","BOX ",idtmed[13],dm,3);
 963
 964   gMC->Gspos("TPCC",1,"TPSC",0.,0.15,0.,0,"ONLY");
 965
 966   zz = -12.7875;
 967
 968
 969   Float_t alpha;
 970   Float_t astep;
 971
 972   // inner part of the inner sector - 2 x 20 holes
 973
 974   astep = 20.00096874/19.;
 975
 976   alpha = 10.00048437-astep;
 977
 978   Float_t x1,x2;
 979
 980     x1 = 13.31175725;
 981     x1 -= 0.996357832;
 982
 983     x2 = 15.06180253;
 984     x2 -= 1.163028812;
 985
 986   Int_t ncon;
 987
 988   for(ncon=0;ncon<20;ncon++){
 989
 990     phi1 = 0.;
 991     theta1 = 90.+alpha;
 992     phi2=90.;
 993     theta2 = 90.;
 994     phi3 = (alpha>0) ? 0. : 180.;
 995     theta3 = TMath::Abs(alpha);
 996
 997     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
 998
 999
1000
1001     gMC->Gspos("TPSC",ncon+1,"TIRC",x1,0.3,-12.7875,idrotm[nRotMat],"ONLY");
1002     gMC->Gspos("TPSC",ncon+21,"TIRC",x2,0.3,-2.8625,idrotm[nRotMat],"ONLY");
1003
1004
1005     x1 -= 1.296357833;
1006     x2 -= 1.463028812;
1007
1008     alpha -= astep;
1009     nRotMat++;
1010
1011   }
1012
1013   // outer part of the inner sector - 2 x 25 holes
1014
1015    astep = 20.00096874/24.;
1016    alpha = 10.00048437-astep;
1017
1018    x1 = 16.81184781;
1019    x1 -= 1.016295986;
1020
1021    x2 = 18.5618931;
1022    x2 -= 1.150914854;
1023
1024   for(ncon=0;ncon<25;ncon++){
1025
1026     phi1 = 0.;
1027     theta1 = 90.+alpha;
1028     phi2=90.;
1029     theta2 = 90.;
1030     phi3 = (alpha>0) ? 0. : 180.;
1031     theta3 = TMath::Abs(alpha);
1032
1033     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1034
1035
1036
1037     gMC->Gspos("TPSC",ncon+41,"TIRC",x1,0.3,7.0625,idrotm[nRotMat],"ONLY");
1038     gMC->Gspos("TPSC",ncon+66,"TIRC",x2,0.3,16.9875,idrotm[nRotMat],"ONLY");
1039
1040
1041     x1 -= 1.316295986;
1042     x2 -= 1.450914854;
1043
1044     alpha -= astep;
1045     nRotMat++;
1046
1047   }
1048
1049   //--------------------------------------------------------------------------
1050   //  TPC Outer Readout Chambers
1051   //  this is NOT a final design
1052   //--------------------------------------------------------------------------
1053
1054   dm[0]= 23.3875;
1055   dm[1]= 43.524;
1056   dm[2]= 1.5; //thickness
1057   dm[3]= 57.1;
1058
1059   gMC->Gsvolu("TORC","TRD1",idtmed[4],dm,4);
1060
1061   //------------------------------------------------
1062   // Tpc Outer readout chamber Pad Plane
1063   //------------------------------------------------
1064
1065   dm[2]= 0.5;
1066
1067   gMC->Gsvolu("TOPP","TRD1",idtmed[12],dm,4);
1068
1069   dm[0] -= 1.218511934;
1070   dm[1] -= 1.218511934;
1071   dm[2] = 0.35;
1072
1073   gMC->Gsvolu("TOC3","TRD1",idtmed[1],dm,4);
1074
1075   gMC->Gspos("TOC3",1,"TOPP",0.,0.15,0.,0,"ONLY");
1076
1077   gMC->Gspos("TOPP",1,"TORC",0.,1.0,0.,0,"ONLY");
1078
1079   // empty space
1080
1081   dm[0]= 21.035;
1082   dm[1]= 38.7205;
1083   dm[2]= 0.7;
1084   dm[3]= 50.15;
1085
1086   gMC->Gsposp("TRCE",10,"TORC",0.,-0.8,-2.15,0,"ONLY",dm,4);
1087
1088   dm[0]= 22.2935;
1089   dm[1]= 40.5085;
1090   dm[2]= 2.25;
1091   dm[3]= 51.65;
1092
1093   gMC->Gsvolu("TOC1","TRD1",idtmed[4],dm,4);
1094
1095   dm[0]= 21.35;
1096   dm[1]= 38.7205;
1097   dm[2]= 2.25;
1098   dm[3]= 50.15;
1099
1100   gMC->Gsposp("TRCE",11,"TOC1",0.,0.,0.,0,"ONLY",dm,4);
1101
1102   //-----------------------------------------------
1103   // Tpc Services Support Wheel
1104   //-----------------------------------------------
1105
1106   dm[0]=0.;
1107   dm[1]=360.;
1108   dm[2]=18.;
1109   dm[3]=2.;
1110
1111   dm[4]= -5.;
1112   dm[5]= 77.017;
1113   dm[6]= 255.267;
1114
1115   dm[7]= 5.;
1116   dm[8]= dm[5];
1117   dm[9]= dm[6];
1118
1119   gMC->Gsvolu("TSSW","PGON",idtmed[4],dm,10);
1120
1121   // Tpc Services Wheel Cover
1122
1123   dm[4]= -0.5;
1124   dm[7]= 0.5;
1125
1126   gMC->Gsvolu("TSWC","PGON",idtmed[4],dm,10);
1127
1128   // Tpc Service wheel Cover Empty space
1129
1130   dm[0]= 10.99;
1131   dm[1]= 39.599;
1132   dm[2]= .5;
1133   dm[3]= 81.125;
1134
1135   gMC->Gsvolu("TSCE","TRD1",idtmed[0],dm,4);
1136
1137   // Tpc services Wheel Empty Spaces
1138
1139   dm[0]= 13.18017507;
1140   dm[1]= 44.61045938;
1141   dm[2]= 4.;
1142   dm[3]= 89.125;
1143
1144   gMC->Gsvolu("TWES","TRD1",idtmed[0],dm,4);
1145
1146   // Tpc Services Wheel Bars
1147
1148   gMC->Gsvolu("TSWB","TRD1",idtmed[4],dm,0);
1149
1150   // bars-> TWES
1151
1152   dm[2]= 4.;
1153   dm[3]= .4;
1154
1155   dm[0]= 13.8149522;
1156   dm[1]= 13.95601379;
1157
1158   gMC->Gsposp("TSWB",1,"TWES",0.,0.,-85.125,0,"ONLY",dm,4);
1159
1160   dm[0]= 43.83462067;
1161   dm[1]= 43.97568225;
1162
1163   gMC->Gsposp("TSWB",2,"TWES",0.,0.,85.125,0,"ONLY",dm,4);
1164
1165   // TPc ELectronics - right now 30% X0 Si
1166
1167   dm[0]= 14.03813696;
1168   dm[1]= 43.3524075;
1169   dm[2]= 1.404;
1170   dm[3]= 83.125;
1171
1172   gMC->Gsvolu("TPEL","TRD1",idtmed[11],dm,4);
1173   gMC->Gspos("TPEL",1,"TWES",0.,0.,0.,0,"ONLY");
1174
1175   //--------------------------------------------------------------------------
1176   //  End caps
1177   //--------------------------------------------------------------------------
1178
1179   // TPc Main Wheel - Al
1180
1181   dm[0]= 74.9;
1182   dm[1]= 264.4;
1183   dm[2]= 3.0;
1184
1185   gMC->Gsvolu("TPMW","TUBE",idtmed[4],dm,3);
1186
1187   //--------------------------------------------------------------------------
1188   //  Tpc Empty Space for the Readout chambers
1189   //--------------------------------------------------------------------------
1190
1191   Float_t rLow= 86.2;
1192   Float_t rUp= 243.5;
1193   Float_t dR = 0.5*(rUp-rLow);
1194
1195   space= 1.5/cosAlpha; // wheel ribs are 3.0 cm wide
1196
1197   dm[0]= rLow*tanAlpha-space;
1198   dm[1]= rUp*tanAlpha-space;
1199   dm[2] = 3.0;
1200   dm[3]= dR;
1201
1202   gMC->Gsvolu("TESR","TRD1",idtmed[0],dm,4);
1203
1204   // TIC1->TESR
1205
1206   gMC->Gspos("TIC1",1,"TESR",0.,0.75,-dR+23.97,0,"ONLY");
1207
1208   // TOC1->TESR
1209
1210   gMC->Gspos("TOC1",1,"TESR",0.,0.75,dR-55.02,0,"ONLY");
1211
1212   // Tpc Empty Space Bars - Al (daughters of TESR)
1213
1214   Float_t zBar;
1215
1216   gMC->Gsvolu("TESB","TRD1",idtmed[4],dm,0);
1217
1218   // lower bar
1219
1220   dm[0]= rLow*tanAlpha-space;
1221   dm[1]= 88.7*tanAlpha-space;
1222   dm[2]= 2.25;
1223   dm[3]= 1.275;
1224
1225   zBar = -dR+dm[3];
1226
1227   gMC->Gsposp("TESB",1,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1228
1229   // middle bar
1230
1231   dm[0]= 131.65*tanAlpha-space;
1232   dm[1]= 136.5*tanAlpha-space;
1233   dm[3]= 2.425;
1234
1235   zBar = -dR +131.65+dm[3]-rLow;
1236
1237   gMC->Gsposp("TESB",2,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1238
1239   // upper bar
1240
1241   dm[0]= 240.4*tanAlpha-space;
1242   dm[1]= rUp*tanAlpha-space;
1243   dm[3]= 1.55;
1244
1245   zBar = dR-dm[3];
1246
1247   gMC->Gsposp("TESB",3,"TESR",0.,0.75,zBar,0,"ONLY",dm,4);
1248
1249
1250   //------------------------------------------------------
1251   //  TPc Lower "S" Sectors
1252   //------------------------------------------------------
1253
1254   Float_t deadSpace;
1255
1256
1257   Float_t inSecLowEdge = fTPCParam->GetInnerRadiusLow();
1258   Float_t inSecUpEdge =  fTPCParam->GetInnerRadiusUp();
1259
1260   dm[0] = inSecLowEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1261   dm[1] = inSecUpEdge*TMath::Tan(0.5*innerOpenAngle)-0.01;
1262   dm[2] = 0.5*(250. - 5.e-3);
1263   dm[3] = 0.5*(inSecUpEdge-inSecLowEdge);
1264
1265   gMC->Gsvolu("TPLS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1266
1267   //----------------------------------------------------------
1268   //  TPc Upper Sectors
1269   //----------------------------------------------------------
1270
1271   Float_t ouSecLowEdge = fTPCParam->GetOuterRadiusLow();
1272   Float_t ouSecUpEdge = fTPCParam->GetOuterRadiusUp();
1273
1274   dm[0] = ouSecLowEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1275   dm[1] = ouSecUpEdge*TMath::Tan(0.5*outerOpenAngle)-0.01;
1276   dm[2] = 0.5*(250. - 5.e-3);
1277   dm[3] = 0.5*(ouSecUpEdge-ouSecLowEdge);
1278
1279   gMC->Gsvolu("TPUS", "TRD1", idtmed[1], dm, 4); // nonsensitive
1280
1281   //--------------------------------------------------------
1282   // TPc Sensitive Strips, the same for S and L sectors
1283   //--------------------------------------------------------
1284
1285   gMC->Gsvolu("TPSS","TRD1",idtmed[2],dm,0); // sensitive
1286
1287   Int_t nofStrips,nstr;
1288   Float_t r1,r2,zs;
1289   Float_t stripThick = 0.01; // 100 microns
1290
1291   // inner sector
1292
1293   nofStrips = fTPCParam->GetNRowLow();
1294   deadSpace = fTPCParam->GetInnerWireMount();
1295
1296   dm[2] = 0.5*(250. - 5.e-3);
1297   dm[3] = 0.5 * stripThick;
1298
1299   for(nstr=0;nstr<nofStrips;nstr++){
1300
1301     r1 = fTPCParam->GetPadRowRadiiLow(nstr);
1302     r2 = r1 + stripThick;
1303     dm[0] = r1 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1304     dm[1] = r2 * TMath::Tan(0.5*innerOpenAngle) - deadSpace;
1305     zs = -inSecLowEdge -0.5*(inSecUpEdge-inSecLowEdge);
1306     zs += r1;
1307     zs += dm[3];
1308
1309     gMC->Gsposp("TPSS", nstr+1, "TPLS", 0., 0., zs, 0, "ONLY", dm, 4);
1310
1311   }
1312
1313   Int_t nsSave = nofStrips;
1314
1315   // outer sector
1316
1317   nofStrips = fTPCParam->GetNRowUp();
1318   deadSpace = fTPCParam->GetOuterWireMount();
1319
1320   dm[2] = 0.5*(250. - 5.e-3);
1321   dm[3] = 0.5 * stripThick;
1322
1323    for(nstr=0;nstr<nofStrips;nstr++){
1324
1325     r1 = fTPCParam->GetPadRowRadiiUp(nstr);
1326     r2 = r1 + stripThick;
1327     dm[0] = r1 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1328     dm[1] = r2 * TMath::Tan(0.5*outerOpenAngle) - deadSpace;
1329     zs = -ouSecLowEdge -0.5*(ouSecUpEdge-ouSecLowEdge);
1330     zs += r1;
1331     zs += dm[3];
1332
1333     gMC->Gsposp("TPSS", nstr+1+nsSave, "TPUS", 0., 0., zs, 0, "ONLY", dm, 4);
1334
1335    }
1336
1337   //-------------------------------------------------------
1338   //  positioning of the empty spaces into the main wheel
1339   //  and readout chambers and sectors into the drift gas
1340   //-------------------------------------------------------
1341
1342
1343   Float_t rCenter,xc,yc;
1344   Float_t rInner,rOuter; // center of the inner and outer chamber
1345
1346   rCenter = rLow+dR;
1347
1348   rInner = 108.07;
1349   rOuter = 190.68;
1350
1351
1352   for(Int_t ns=0; ns<nInnerSector;ns++){
1353
1354     phi1 = ns * innerOpenAngle + innerAngleShift;
1355     phi1 *= kRaddeg; // in degrees
1356
1357     phi1 = (Float_t)TMath::Nint(phi1) + 270.;
1358
1359     if (phi1 > 360.) phi1 -= 360.;
1360
1361     theta1 = 90.;
1362     phi2   = 90.;
1363     theta2 = 180.;
1364     phi3   = ns * innerOpenAngle + innerAngleShift;
1365     phi3 *= kRaddeg; // in degrees
1366
1367     phi3 = (Float_t)TMath::Nint(phi3);
1368
1369     if(phi3 > 360.) phi3 -= 360.;
1370
1371     theta3 = 90.;
1372
1373     // "holes"->End plate
1374
1375     xc = rCenter*TMath::Cos(phi3*kDegrad);
1376     yc = rCenter*TMath::Sin(phi3*kDegrad);
1377
1378     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1379
1380     gMC->Gspos("TESR",ns+1,"TPMW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1381
1382     // TSCE->TSWC (services wheel volumes)
1383
1384     xc = 166.142*TMath::Cos(phi3*kDegrad);
1385     yc = 166.142*TMath::Sin(phi3*kDegrad);
1386
1387     gMC->Gspos("TSCE",ns+1,"TSWC",xc,yc,0.,idrotm[nRotMat],"ONLY");
1388     gMC->Gspos("TWES",ns+1,"TSSW",xc,yc,0.,idrotm[nRotMat],"ONLY");
1389
1390
1391     // readout chambers->TDGN (drift gas)
1392
1393     xc = rInner*TMath::Cos(phi3*kDegrad);
1394     yc = rInner*TMath::Sin(phi3*kDegrad);
1395
1396     gMC->Gspos("TIRC",ns+1,"TDGN",xc,yc,252.,idrotm[nRotMat],"ONLY");
1397
1398     // here lower sectors
1399
1400     gMC->Gspos("TPLS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1401     gMC->Gspos("TPLS",ns+nInnerSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1402
1403
1404
1405     xc = rOuter*TMath::Cos(phi3*kDegrad);
1406     yc = rOuter*TMath::Sin(phi3*kDegrad);
1407
1408     gMC->Gspos("TORC",ns+1,"TDGN",xc,yc,252.1,idrotm[nRotMat],"ONLY");
1409
1410     // here upper sectors
1411
1412     gMC->Gspos("TPUS",ns+1,"TDGN",xc,yc,125.0025,idrotm[nRotMat],"ONLY");
1413     gMC->Gspos("TPUS",ns+nOuterSector+1,"TDGN",xc,yc,-125.0025,idrotm[nRotMat],"ONLY");
1414
1415
1416     nRotMat++;
1417
1418     theta2 = 0.; // reflection
1419
1420     AliMatrix(idrotm[nRotMat], theta1, phi1, theta2, phi2, theta3, phi3);
1421
1422     xc = rInner*TMath::Cos(phi3*kDegrad);
1423     yc = rInner*TMath::Sin(phi3*kDegrad);
1424
1425     gMC->Gspos("TIRC",ns+nInnerSector+1,"TDGN",xc,yc,-252.,idrotm[nRotMat],"ONLY");
1426
1427     xc = rOuter*TMath::Cos(phi3*kDegrad);
1428     yc = rOuter*TMath::Sin(phi3*kDegrad);
1429
1430     gMC->Gspos("TORC",ns+nOuterSector+1,"TDGN",xc,yc,-252.1,idrotm[nRotMat],"ONLY");
1431
1432     nRotMat++;
1433
1434   }
1435   // TPMW->TPC
1436
1437   gMC->Gspos("TPMW",1,"TPC ",0.,0.,256.6,0,"ONLY");
1438   gMC->Gspos("TPMW",2,"TPC ",0.,0.,-256.6,idrotm[0],"ONLY");
1439
1440   //---------------------------------------------------------
1441   //  Tpc High Voltage Membrane - 100 microns of mylar
1442   //---------------------------------------------------------
1443
1444   dm[0]=82.8;
1445   dm[1]=252.;
1446   dm[2]=0.005;
1447
1448   gMC->Gsvolu("THVM","TUBE",idtmed[8],dm,3);
1449
1450   gMC->Gspos("THVM",1,"TDGN",0.,0.,0.,0,"ONLY");
1451
1452   // Tpc High Voltage membrane Holders
1453
1454   gMC->Gsvolu("THVH","TUBE",idtmed[4],dm,0);
1455
1456
1457
1458   // inner
1459
1460   dm[0]=79.3;
1461   dm[1]=82.8;
1462   dm[2]=0.2;
1463
1464   gMC->Gsposp("THVH",1,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1465
1466   // outer
1467
1468   dm[0]= 252.;
1469   dm[1]= 257.9;
1470   dm[2]= 0.4;
1471
1472   gMC->Gsposp("THVH",2,"TDGN",0.,0.,0.,0,"ONLY",dm,3);
1473
1474   //----------------------------------------------------------
1475   // TPc Support Rods - MAKROLON
1476   //----------------------------------------------------------
1477
1478   dm[0]= 0.9;
1479   dm[1]= 1.2;
1480
1481   gMC->Gsvolu("TPSR","TUBE",idtmed[7],dm,0); // inner and outer rods differ
1482
1483
1484   for(Int_t nrod=0;nrod<18;nrod++){
1485     Float_t angle=innerOpenAngle*(Float_t)nrod;
1486
1487     xc=81.5*TMath::Cos(angle);
1488     yc=81.5*TMath::Sin(angle);
1489
1490     dm[2]=126.7;
1491
1492     gMC->Gsposp("TPSR",nrod+1,"TDGN",xc,yc,126.9,0,"ONLY",dm,3);
1493     gMC->Gsposp("TPSR",nrod+19,"TDGN",xc,yc,-126.9,0,"ONLY",dm,3);
1494
1495     dm[2]=126.6;
1496
1497     xc=254.25*TMath::Cos(angle);
1498     yc=254.25*TMath::Sin(angle);
1499
1500     // rod number 54 contans the HV cable
1501
1502     if(nrod<17) {
1503       gMC->Gsposp("TPSR",nrod+37,"TDGN",xc,yc,127.,0,"ONLY",dm,3);
1504       gMC->Gsposp("TPSR",nrod+54,"TDGN",xc,yc,-127.,0,"ONLY",dm,3);
1505     }
1506
1507   }
1508
1509   //----------------------------------------------------------
1510   // Tpc High Voltage Rod - MAKROLON + Copper cable
1511   //----------------------------------------------------------
1512
1513   // rod with cable (Left)
1514
1515   dm[0]=0.;
1516   dm[1]=2.25;
1517   dm[2]=126.6;
1518
1519   gMC->Gsvolu("THVL","TUBE",idtmed[7],dm,3);
1520
1521   // HV cable
1522
1523   dm[0]=0.;
1524   dm[1]=0.3;
1525   dm[2]=126.6;
1526
1527   gMC->Gsvolu("THVC","TUBE",idtmed[10],dm,3);
1528
1529   // empty space
1530
1531   dm[0]=0.3;
1532   dm[1]=1.;
1533   dm[2]=126.6;
1534
1535   gMC->Gsvolu("THVE","TUBE",idtmed[1],dm,3);
1536
1537   gMC->Gspos("THVC",1,"THVL",0.,0.,0.,0,"ONLY");
1538   gMC->Gspos("THVE",1,"THVL",0.,0.,0.,0,"ONLY");
1539
1540   // rod without cable
1541
1542   dm[0]=1.8;
1543   dm[1]=2.25;
1544   dm[2]=126.6;
1545
1546   gMC->Gsvolu("THVR","TUBE",idtmed[7],dm,3);
1547
1548   gMC->Gspos("THVL",1,"TDGN",xc,yc,-127.,0,"ONLY");
1549   gMC->Gspos("THVR",1,"TDGN",xc,yc,127.,0,"ONLY");
1550
1551   gMC->Gspos("TDGN",1,"TPC ",0.,0.,0.,0,"ONLY");
1552
1553   // services wheel cover -> wheel
1554
1555
1556   gMC->Gspos("TSWC",1,"TSSW",0.,0.,4.5,0,"ONLY");
1557   gMC->Gspos("TSWC",2,"TSSW",0.,0.,-4.5,0,"ONLY");
1558
1559
1560   // put the wheel into the TPC
1561
1562   gMC->Gspos("TSSW",1,"TPC ",0.,0.,278.7,0,"ONLY");
1563   gMC->Gspos("TSSW",2,"TPC ",0.,0.,-278.7,0,"ONLY");
1564
1565   //
1566
1567   gMC->Gsord("TPMW",6);
1568   gMC->Gsord("TSSW",6);
1569   gMC->Gsord("TSWC",6);
1570   gMC->Gsord("TPLS",3);
1571   gMC->Gsord("TPUS",3);
1572   gMC->Gsord("TDGN",6);
1573
1574
1575   // put the TPC into ALIC (main mother volume)
1576
1577   gMC->Gspos("TPC ",1,"ALIC",0.,0.,0.,0,"ONLY");
1578
1579
1580
1581 } // end of function
1582
1583 //_____________________________________________________________________________
1584 void AliTPCv1::DrawDetector()
1585 {
1586   //
1587   // Draw a shaded view of the Time Projection Chamber version 1
1588   //
1589
1590   // Set everything unseen
1591   gMC->Gsatt("*", "seen", -1);
1592   //
1593   // Set ALIC mother transparent
1594   gMC->Gsatt("ALIC","SEEN",0);
1595   //
1596   // Set the volumes visible
1597   gMC->Gsatt("TPC ","SEEN",0);
1598   gMC->Gsatt("TOIN","SEEN",1);
1599   gMC->Gsatt("TOIN","COLO",7);
1600   gMC->Gsatt("TOCV","SEEN",1);
1601   gMC->Gsatt("TOCV","COLO",4);
1602   gMC->Gsatt("TSA1","SEEN",0);
1603   gMC->Gsatt("TSA2","SEEN",0);
1604   gMC->Gsatt("TSA3","SEEN",0);
1605   gMC->Gsatt("TSA4","SEEN",0);
1606   gMC->Gsatt("TSA5","SEEN",0);
1607   gMC->Gsatt("TOFC","SEEN",1);
1608   gMC->Gsatt("TOFC","COLO",4);
1609   gMC->Gsatt("TSA6","SEEN",0);
1610   gMC->Gsatt("TSA7","SEEN",0);
1611   gMC->Gsatt("TSA8","SEEN",0);
1612   gMC->Gsatt("TIIN","SEEN",1);
1613   gMC->Gsatt("TIIN","COLO",7);
1614   gMC->Gsatt("TII1","SEEN",0);
1615   gMC->Gsatt("TIFC","SEEN",1);
1616   gMC->Gsatt("TIFC","COLO",4);
1617   gMC->Gsatt("TSA9","SEEN",0);
1618   gMC->Gsatt("TS10","SEEN",0);
1619   gMC->Gsatt("TS11","SEEN",0);
1620   gMC->Gsatt("TS12","SEEN",0);
1621   gMC->Gsatt("TS13","SEEN",0);
1622   gMC->Gsatt("TS14","SEEN",0);
1623   gMC->Gsatt("TICC","SEEN",0);
1624   gMC->Gsatt("TICM","SEEN",0);
1625   gMC->Gsatt("TS15","SEEN",0);
1626   gMC->Gsatt("TS16","SEEN",0);
1627   gMC->Gsatt("TS17","SEEN",0);
1628   gMC->Gsatt("TS18","SEEN",0);
1629   gMC->Gsatt("TS19","SEEN",0);
1630   gMC->Gsatt("TPJ1","SEEN",0);
1631   gMC->Gsatt("TPJ2","SEEN",0);
1632   gMC->Gsatt("TICS","SEEN",0);
1633   gMC->Gsatt("TDGN","SEEN",0);
1634   gMC->Gsatt("TIRC","SEEN",0);
1635   gMC->Gsatt("TIC1","SEEN",1);
1636   gMC->Gsatt("TIPP","SEEN",0);
1637   gMC->Gsatt("TIC3","SEEN",0);
1638   gMC->Gsatt("TRCE","SEEN",0);
1639   gMC->Gsatt("TPSC","SEEN",0);
1640   gMC->Gsatt("TPCC","SEEN",0);
1641   gMC->Gsatt("TORC","SEEN",0);
1642   gMC->Gsatt("TOPP","SEEN",0);
1643   gMC->Gsatt("TOC3","SEEN",0);
1644   gMC->Gsatt("TOC1","SEEN",1);
1645   gMC->Gsatt("TSSW","SEEN",1);
1646   gMC->Gsatt("TSWC","SEEN",1);
1647   gMC->Gsatt("TSSW","COLO",3);
1648   gMC->Gsatt("TSWC","COLO",3);
1649   gMC->Gsatt("TSCE","COLO",6);
1650   gMC->Gsatt("TSCE","SEEN",1);
1651   gMC->Gsatt("TWES","SEEN",0);
1652   gMC->Gsatt("TSWB","SEEN",0);
1653   gMC->Gsatt("TPEL","SEEN",0);
1654   gMC->Gsatt("TPMW","SEEN",1);
1655   gMC->Gsatt("TESR","SEEN",1);
1656   gMC->Gsatt("TPMW","COLO",12);
1657   gMC->Gsatt("TIC1","COLO",5);
1658   gMC->Gsatt("TOC1","COLO",5);
1659   gMC->Gsatt("TESB","SEEN",0);
1660   gMC->Gsatt("THVM","SEEN",1);
1661   gMC->Gsatt("THVM","COLO",11);
1662   gMC->Gsatt("THVH","SEEN",0);
1663   gMC->Gsatt("TPSR","SEEN",0);
1664   gMC->Gsatt("THVL","SEEN",0);
1665   gMC->Gsatt("THVC","SEEN",0);
1666   gMC->Gsatt("THVE","SEEN",0);
1667   gMC->Gsatt("THVR","SEEN",0);
1668   gMC->Gsatt("TPSS","SEEN",0);
1669   gMC->Gsatt("TPUS","SEEN",0);
1670   gMC->Gsatt("TPLS","SEEN",0);
1671
1672   //
1673   gMC->Gdopt("hide", "on");
1674   gMC->Gdopt("shad", "on");
1675   gMC->Gsatt("*", "fill", 7);
1676   gMC->SetClipBox(".");
1677   gMC->SetClipBox("TPMW",-300,300,-300,300,254.,270.);
1678   gMC->SetClipBox("TESR",-300,300,-300,300,254.,270.);
1679   gMC->SetClipBox("TSSW",-300,300,-300,300,283.,284.);
1680   gMC->SetClipBox("TSWC",-300,300,-300,300,283.,284.);
1681   gMC->SetClipBox("*", 0, 300, -300, 300, -290, 290);
1682   gMC->DefaultRange();
1683   gMC->Gdraw("alic", 40, 30, 0, 12, 9.5, .025, .025);
1684   gMC->Gdhead(1111, "Time Projection Chamber");
1685   gMC->Gdman(18, 4, "MAN");
1686   gMC->Gdopt("hide","off");
1687 }
1688
1689 //_____________________________________________________________________________
1690 void AliTPCv1::CreateMaterials()
1691 {
1692   //
1693   // Define materials for Time Projection Chamber
1694   //
1695   AliTPC::CreateMaterials();
1696 }
1697
1698 //_____________________________________________________________________________
1699 void AliTPCv1::Init()
1700 {
1701   //
1702   // Initialises TPC detector after it has been created
1703   //
1704
1705   fIdSens=gMC->VolId("TPSS"); // sensitive strip
1706   fIdLSec=gMC->VolId("TPLS"); // lower sector
1707   fIdUSec=gMC->VolId("TPUS"); // upper sector
1708
1709   printf("%s: *** TPC version 1 initialized***\n",ClassName());
1710
1711   // printf("TPC version 1 initialized\n");
1712 }
1713
1714 //_____________________________________________________________________________
1715 void AliTPCv1::StepManager()
1716 {
1717   //
1718   // Called at every step in the Time Projection Chamber
1719   //
1720   Int_t         copy, id, i;
1721   Float_t       hits[4];
1722   Int_t         vol[2];
1723   TLorentzVector p;
1724  //
1725
1726   if(gMC->TrackCharge() && gMC->IsTrackEntering()) {
1727
1728     //
1729     // Only charged tracks entering the sensitive volume
1730     //
1731
1732     id = gMC->CurrentVolID(copy);
1733
1734     if(id == fIdSens){
1735
1736       // sensitive volume (strip)
1737
1738       vol[1]= copy-1; // row number (absolute)
1739
1740       // sector type
1741
1742       id = gMC->CurrentVolOffID(1,copy);
1743
1744       if(id == fIdLSec){
1745
1746         // lower sector
1747
1748         vol[0] = copy-1; // sector number
1749
1750       }
1751       else {
1752
1753         // upper sector
1754
1755         vol[0] = copy-1+fTPCParam->GetNInnerSector(); // sector number
1756         vol[1] -= fTPCParam->GetNRowLow(); // row number
1757
1758       }
1759
1760       if(vol[1] == 0){
1761
1762         // because Jouri wants to have this
1763
1764         gMC->TrackMomentum(p);
1765         hits[0]=p[0];
1766         hits[1]=p[1];
1767         hits[2]=p[2];
1768         hits[3]=0.; // this hit has no energy loss
1769         // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->GetCurrentTrackNumber(),vol,hits);
1770
1771         AddHit(gAlice->GetCurrentTrackNumber(), vol,hits); // M.I.
1772
1773         gMC->TrackPosition(p);
1774         hits[0]=p[0];
1775         hits[1]=p[1];
1776         hits[2]=p[2];
1777         hits[3]=0.; // this hit has no energy loss
1778         // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->GetCurrentTrackNumber(),vol,hits);
1779
1780         AddHit(gAlice->GetCurrentTrackNumber(), vol,hits); // M.I.
1781
1782       }
1783
1784       gMC->TrackPosition(p);
1785       for(i=0;i<3;++i) hits[i]=p[i];
1786       hits[3]=1; //I'd like to have something positive here (I.Belikov)
1787       // new(lhits[fNhits++]) AliTPChit(fIshunt,gAlice->GetCurrentTrackNumber(),vol,hits);
1788
1789       AddHit(gAlice->GetCurrentTrackNumber(), vol,hits); // M.I.
1790
1791     }
1792
1793   }
1794
1795 }
1796 //_____________________________________________________________________________
1797
1798
1799