MUON/AliMUONSlatGeometryBuilder.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  14  **************************************************************************/
  15
  16 // $Id$
  17 //
  18 // Class AliMUONSlatGeometryBuilder
  19 // -------------------------------
  20 // Abstract base class for geometry construction per chamber.
  21 //
  22
  23
  24
  25 // This Builder is designed according to the enveloppe methode. The basic idea is to be able to allow moves
  26 // of the slats on the support panels.
  27 // Those moves can be described with a simple set of parameters. The next step should be now to describe all
  28 // the slats and their places by a unique
  29 // class, which would make the SlatBuilder far more compact since now only three parameters can define a slat
  30 // and its position, like:
  31 //   * Bool_t rounded_shape_slat
  32 //   * Float_t slat_length
  33 //   * Float_t slat_number or Float_t slat_position
  34
  35 #include <TVirtualMC.h>
  36 #include <TGeoMatrix.h>
  37 #include <Riostream.h>
  38
  39 #include "AliRun.h"
  40 #include "AliLog.h"
  41
  42 #include "AliMUONSlatGeometryBuilder.h"
  43 #include "AliMUON.h"
  44 #include "AliMUONChamber.h"
  45 #include "AliMUONGeometryModule.h"
  46 #include "AliMUONGeometryEnvelopeStore.h"
  47 #include "AliMUONConstants.h"
  48
  49 ClassImp(AliMUONSlatGeometryBuilder)
  50
  51
  52 //______________________________________________________________________________
  53 AliMUONSlatGeometryBuilder::AliMUONSlatGeometryBuilder(AliMUON* muon)
  54  : AliMUONVGeometryBuilder("slat.dat",
  55                            muon->Chamber(4).GetGeometry(),
  56                            muon->Chamber(5).GetGeometry(),
  57                            muon->Chamber(6).GetGeometry(),
  58                            muon->Chamber(7).GetGeometry(),
  59                            muon->Chamber(8).GetGeometry(),
  60                            muon->Chamber(9).GetGeometry()),
  61    fMUON(muon)
  62 {
  63 // Standard constructor
  64
  65 }
  66
  67 //______________________________________________________________________________
  68 AliMUONSlatGeometryBuilder::AliMUONSlatGeometryBuilder()
  69  : AliMUONVGeometryBuilder(),
  70    fMUON(0)
  71 {
  72 // Default constructor
  73 }
  74
  75
  76 //______________________________________________________________________________
  77 AliMUONSlatGeometryBuilder::AliMUONSlatGeometryBuilder(const AliMUONSlatGeometryBuilder& rhs)
  78   : AliMUONVGeometryBuilder(rhs)
  79 {
  80   AliFatal("Copy constructor is not implemented.");
  81 }
  82
  83 //______________________________________________________________________________
  84 AliMUONSlatGeometryBuilder::~AliMUONSlatGeometryBuilder() {
  85 //
  86 }
  87
  88 //______________________________________________________________________________
  89 AliMUONSlatGeometryBuilder&
  90 AliMUONSlatGeometryBuilder::operator = (const AliMUONSlatGeometryBuilder& rhs)
  91 {
  92   // check assignement to self
  93   if (this == &rhs) return *this;
  94
  95   AliFatal("Assignment operator is not implemented.");
  96
  97   return *this;
  98 }
  99
 100 //
 101 // public methods
 102 //
 103
 104 //______________________________________________________________________________
 105 void AliMUONSlatGeometryBuilder::CreateGeometry()
 106 {
 107   // CreateGeometry is the method containing all the informations concerning Stations 345 geometry.
 108   // It includes description and placements of support panels and slats.
 109   // The code comes directly from what was written in AliMUONv1.cxx before, with modifications concerning
 110   // the use of Enveloppe method to place the Geant volumes.
 111   // Now, few changes would allow the creation of a Slat methode where slat could be described by few parameters,
 112   // and this builder would then be dedicated only to the
 113   // placements of the slats. Those modifications could shorten the Station 345 geometry by a non-negligeable factor...
 114
 115   Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
 116
 117   Float_t angle;
 118   Float_t *dum=0;
 119
 120   // define the id of tracking media:
 121   Int_t idAir    = idtmed[1100]; // medium 1
 122   Int_t idGas    = idtmed[1108]; // medium 9 = Ar-CO2 gas (80%+20%)
 123   Int_t idCopper = idtmed[1110];
 124   Int_t idG10    = idtmed[1111];
 125   Int_t idCarbon = idtmed[1112];
 126   Int_t idRoha   = idtmed[1113];
 127   Int_t idNomex  = idtmed[1114]; // honey comb
 128   Int_t idNoryl  = idtmed[1115];
 129   Int_t idNomexB = idtmed[1116]; // bulk material
 130
 131   // sensitive area: 40*40 cm**2
 132   const Float_t kSensLength = 40.;
 133   const Float_t kSensHeight = 40.;
 134   const Float_t kSensWidth  = AliMUONConstants::Pitch()*2;// 0.5 cm, according to TDR fig 2.120
 135   const Int_t kSensMaterial = idGas;
 136   //     const Float_t kYoverlap   = 1.5;
 137
 138   // PCB dimensions in cm; width: 30 mum copper
 139   const Float_t kPcbLength  = kSensLength;
 140   const Float_t kPcbHeight  = 58.; // updated Ch. Finck
 141   const Float_t kPcbWidth   = 0.003;
 142   const Int_t kPcbMaterial  = idCopper;
 143
 144   // Insulating material: 220 mum G10 fiber  glued to pcb
 145   const Float_t kInsuLength = kPcbLength;
 146   const Float_t kInsuHeight = kPcbHeight;
 147   const Float_t kInsuWidth  = 0.022;  // updated Ch. Finck
 148   const Int_t kInsuMaterial = idG10;
 149
 150   // Carbon fiber panels: 200mum carbon/epoxy skin
 151   const Float_t kCarbonWidth  = 0.020;
 152   const Int_t kCarbonMaterial = idCarbon;
 153
 154   // Nomex (honey comb) between the two panel carbon skins
 155   const Float_t kNomexLength = kSensLength;
 156   const Float_t kNomexHeight = kSensHeight;
 157   const Float_t kNomexWidth  = 0.8; // updated Ch. Finck
 158   const Int_t kNomexMaterial = idNomex;
 159
 160   // Bulk Nomex under panel sandwich Ch. Finck
 161   const Float_t kNomexBWidth  = 0.025;
 162   const Int_t kNomexBMaterial = idNomexB;
 163
 164   // Panel sandwich 0.02 carbon*2 + 0.8 nomex
 165   const Float_t kPanelLength = kSensLength;
 166   const Float_t kPanelHeight = kSensHeight;
 167   const Float_t kPanelWidth  = 2 * kCarbonWidth + kNomexWidth;
 168
 169   // Frame along the rounded (spacers) slats
 170   const Float_t kRframeHeight = 2.00;
 171
 172   // spacer around the slat: 2 sticks along length,2 along height
 173   // H: the horizontal ones
 174   const Float_t kHframeLength = kPcbLength;
 175   const Float_t kHframeHeight = 1.95; // updated Ch. Finck
 176   const Float_t kHframeWidth  = kSensWidth;
 177   const Int_t kHframeMaterial = idNoryl;
 178
 179   // V: the vertical ones; vertical spacers
 180   const Float_t kVframeLength = 2.5;
 181   const Float_t kVframeHeight = kSensHeight + kHframeHeight;
 182   const Float_t kVframeWidth  = kSensWidth;
 183   const Int_t kVframeMaterial = idNoryl;
 184
 185   // B: the horizontal border filled with rohacell: ok Ch. Finck
 186   const Float_t kBframeLength = kHframeLength;
 187   const Float_t kBframeHeight = (kPcbHeight - kSensHeight)/2. - kHframeHeight;
 188   const Float_t kBframeWidth  = kHframeWidth;
 189   const Int_t kBframeMaterial = idRoha;
 190
 191   // NULOC: 30 mum copper + 200 mum vetronite (same radiation length as 14mum copper) for electronics
 192   const Float_t kNulocLength   = 2.5;
 193   const Float_t kNulocHeight   = kBframeHeight;
 194   const Float_t kNulocWidth    = 0.0030 + 0.0014; // equivalent copper width of vetronite;
 195   const Int_t   kNulocMaterial = idCopper;
 196
 197   // Slat parameters
 198   const Float_t kSlatHeight = kPcbHeight;
 199   const Float_t kSlatWidth  = kSensWidth + 2.*(kPcbWidth + kInsuWidth + kPanelWidth
 200                                                + kNomexBWidth); //replaced rohacell with Nomex Ch. Finck
 201   const Int_t   kSlatMaterial = idAir;
 202   const Float_t kDslatLength  = -1.25; // position of the slat respect to the beam plane (half vertical spacer) Ch. Finck
 203   Float_t zSlat               = AliMUONConstants::DzSlat();// implemented Ch. Finck
 204   Float_t dzCh                = AliMUONConstants::DzCh();
 205
 206   Float_t spar[3];
 207   Int_t i, j;
 208   Int_t detElemId;
 209
 210   // the panel volume contains the nomex
 211   Float_t panelpar[3] = { kPanelLength/2., kPanelHeight/2., kPanelWidth/2. };
 212   Float_t nomexpar[3] = { kNomexLength/2., kNomexHeight/2., kNomexWidth/2. };
 213   Float_t twidth =  kPanelWidth +  kNomexBWidth;
 214   Float_t nomexbpar[3] = {kNomexLength/2., kNomexHeight/2.,twidth/2. };// bulk nomex
 215
 216   // insulating material contains PCB-> gas
 217   twidth = 2*(kInsuWidth + kPcbWidth) + kSensWidth ;
 218   Float_t insupar[3] = {kInsuLength/2., kInsuHeight/2., twidth/2. };
 219   twidth -= 2 * kInsuWidth;
 220   Float_t pcbpar[3]  = {kPcbLength/2., kPcbHeight/2., twidth/2. };
 221   Float_t senspar[3] = {kSensLength/2., kSensHeight/2., kSensWidth/2. };
 222   Float_t theight    = 2 * kHframeHeight + kSensHeight;
 223   Float_t hFramepar[3] = {kHframeLength/2., theight/2., kHframeWidth/2.};
 224   Float_t bFramepar[3] = {kBframeLength/2., kBframeHeight/2., kBframeWidth/2.};
 225   Float_t vFramepar[3] = {kVframeLength/2., kVframeHeight/2., kVframeWidth/2.};
 226   Float_t nulocpar[3]  = {kNulocLength/2.,  kNulocHeight/2.,  kNulocWidth/2.};
 227
 228   Float_t xx;
 229   Float_t xxmax = (kBframeLength - kNulocLength)/2.;
 230   Int_t index=0;
 231
 232   AliMUONChamber *iChamber, *iChamber1, *iChamber2;
 233
 234   Int_t* fStations = new Int_t[5];
 235   for (Int_t i=0; i<5; i++) fStations[i] = 1;
 236   fStations[2] = 1;
 237
 238   if (fStations[2])
 239     {
 240       //********************************************************************
 241       //                            Station 3                             **
 242       //********************************************************************
 243       // indices 1 and 2 for first and second chambers in the station
 244       // iChamber (first chamber) kept for other quanties than Z,
 245       // assumed to be the same in both chambers
 246
 247       iChamber = &fMUON->Chamber(4);
 248       iChamber1 = iChamber;
 249       iChamber2 = &fMUON->Chamber(5);
 250
 251       //iChamber1->GetGeometry()->SetDebug(kTRUE);
 252       //iChamber2->GetGeometry()->SetDebug(kTRUE);
 253
 254       if (gAlice->GetModule("DIPO")) {
 255         // if DIPO is preset, the whole station will be placed in DDIP volume
 256         iChamber1->GetGeometry()->SetMotherVolume("DDIP");
 257         iChamber2->GetGeometry()->SetMotherVolume("DDIP");
 258       }
 259
 260       if (!gAlice->GetModule("DIPO")) {
 261         // Mother volume for each chamber in st3 are only defined if Dipole volue is there.
 262         // Outer excess and inner recess for mother volume radius
 263         // with respect to ROuter and RInner
 264         Float_t dframepIn = kRframeHeight;
 265         Float_t dframepOut= kVframeLength + 37.0; // Additional 37 cm gap is needed to wrap the corners of the slats
 266         Float_t tpar[3];
 267         Double_t dstation =  ( (-iChamber2->Z()) - (-iChamber1->Z()) ) /2.1;
 268         tpar[0] = iChamber1->RInner()-dframepIn;
 269         tpar[1] = (iChamber1->ROuter()+dframepOut);
 270         tpar[2] = dstation;
 271         gMC->Gsvolu("CH05", "TUBE", idAir, tpar, 3);
 272         gMC->Gsvolu("CH06", "TUBE", idAir, tpar, 3);
 273         iChamber1->GetGeometry()->SetVolume("CH05");
 274         iChamber2->GetGeometry()->SetVolume("CH06");
 275       }
 276       // volumes for slat geometry (xx=5,..,10 chamber id):
 277       // Sxx0 Sxx1 Sxx2 Sxx3  -->   Slat Mother volumes
 278       // SxxG                          -->   Sensitive volume (gas)
 279       // SxxP                          -->   PCB (copper)
 280       // SxxI                          -->   Insulator (G10)
 281       // SxxC                          -->   Carbon panel
 282       // SxxN                          -->   Nomex comb
 283       // SxxX                          -->   Nomex bulk
 284       // SxxH, SxxV                    -->   Horizontal and Vertical frames (Noryl)
 285       // SB5x                          -->   Volumes for the 35 cm long PCB
 286       // slat dimensions: slat is a MOTHER volume!!! made of air
 287
 288       // only for chamber 5: slat 1 has a PCB shorter by 5cm!
 289
 290       Float_t tlength = 35.;
 291       Float_t panelpar2[3]  = { tlength/2., panelpar[1],  panelpar[2]};
 292       Float_t nomexpar2[3]  = { tlength/2., nomexpar[1],  nomexpar[2]};
 293       Float_t nomexbpar2[3] = { tlength/2., nomexbpar[1],  nomexbpar[2]};
 294       Float_t insupar2[3]   = { tlength/2., insupar[1],   insupar[2]};
 295       Float_t pcbpar2[3]    = { tlength/2., pcbpar[1],    pcbpar[2]};
 296       Float_t senspar2[3]   = { tlength/2., senspar[1],   senspar[2]};
 297       Float_t hFramepar2[3] = { tlength/2., hFramepar[1], hFramepar[2]};
 298       Float_t bFramepar2[3] = { tlength/2., bFramepar[1], bFramepar[2]};
 299       Float_t *dum=0;
 300       Float_t pcbDLength3   = (kPcbLength - tlength);
 301
 302       const Int_t   kNslats3         = 5;  // number of slats per quadrant
 303       const Int_t   kNPCB3[kNslats3] = {4, 4, 4, 3, 2}; // n PCB per slat
 304       const Float_t kXpos3[kNslats3] = {0., 0., 0., 0., 0.};//{31., 0., 0., 0., 0.};
 305       const Float_t kYpos3[kNslats3] = {0, 37.8, 37.7, 37.3, 33.7};
 306       Float_t slatLength3[kNslats3];
 307
 308       // create and position the slat (mother) volumes
 309
 310       char idSlatCh5[5];
 311       char idSlatCh6[5];
 312       Float_t xSlat3;
 313       Float_t ySlat3 = 0;
 314       Float_t angle = 0.;
 315       Float_t spar2[3];
 316       for (i = 0; i < kNslats3; i++){
 317
 318         slatLength3[i] = kPcbLength * kNPCB3[i] + 2.* kVframeLength;
 319         xSlat3 = slatLength3[i]/2. +  kDslatLength + kXpos3[i];
 320         ySlat3 += kYpos3[i];
 321
 322         spar[0] = slatLength3[i]/2.;
 323         spar[1] = kSlatHeight/2.;
 324         spar[2] = kSlatWidth/2.;
 325         // take away 5 cm from the first slat in chamber 5
 326         if (i == 0 || i == 1 || i == 2) { // 1 pcb is shortened by 5cm
 327           spar2[0] = spar[0] - pcbDLength3/2.;
 328         } else {
 329           spar2[0] = spar[0];
 330         }
 331         spar2[1] = spar[1];
 332         spar2[2] = spar[2];
 333         Float_t dzCh3 = dzCh;
 334         Float_t zSlat3 = (i%2 ==0)? -zSlat : zSlat; // seems not that zSlat3 = zSlat4 & 5 refering to plan PQ7EN345-6 ?
 335
 336         sprintf(idSlatCh5,"LA%d",i+kNslats3-1);
 337         gMC->Gsvolu(idSlatCh5,"BOX",kSlatMaterial,spar2,3);
 338         detElemId = 509 - (i + kNslats3-1-4);
 339         GetEnvelopes(4)->AddEnvelope(idSlatCh5, detElemId, true, TGeoTranslation(xSlat3, ySlat3, -zSlat3 + dzCh3),
 340                                      TGeoRotation("rot1",90,angle,90,90+angle,0,0) );
 341
 342         sprintf(idSlatCh5,"LA%d",3*kNslats3-2+i);
 343         gMC->Gsvolu(idSlatCh5,"BOX",kSlatMaterial,spar2,3);
 344         detElemId = 500 + (i + kNslats3-1-4);
 345         GetEnvelopes(4)->AddEnvelope(idSlatCh5, detElemId, true, TGeoTranslation(-xSlat3, ySlat3, zSlat3 - dzCh3),
 346                                      TGeoRotation("rot2",90,180+angle,90,90+angle,180,0) );
 347
 348         if (i > 0) {
 349           sprintf(idSlatCh5,"LA%d",kNslats3-1-i);
 350           gMC->Gsvolu(idSlatCh5,"BOX",kSlatMaterial,spar2,3);
 351           detElemId = 509 + (i + kNslats3-1-4);
 352           GetEnvelopes(4)->AddEnvelope(idSlatCh5, detElemId, true, TGeoTranslation(xSlat3, -ySlat3, -zSlat3 + dzCh3),
 353                                        TGeoRotation("rot3",90,angle,90,270+angle,180,0) );
 354
 355           sprintf(idSlatCh5,"LA%d",3*kNslats3-2-i);
 356           gMC->Gsvolu(idSlatCh5,"BOX",kSlatMaterial,spar2,3);
 357           detElemId = 518 - (i + kNslats3-1-4);
 358           GetEnvelopes(4)->AddEnvelope(idSlatCh5, detElemId, true, TGeoTranslation(-xSlat3, -ySlat3, zSlat3 - dzCh3),
 359                                        TGeoRotation("rot4",90,180+angle,90,270+angle,0,0) );
 360         }
 361
 362         sprintf(idSlatCh6,"LB%d",kNslats3-1+i);
 363         gMC->Gsvolu(idSlatCh6,"BOX",kSlatMaterial,spar,3);
 364         detElemId = 609 - (i  + kNslats3-1-4);
 365         GetEnvelopes(5)->AddEnvelope(idSlatCh6, detElemId, true, TGeoTranslation(xSlat3, ySlat3, -zSlat3 + dzCh3),
 366                                      TGeoRotation("rot5",90,angle,90,90+angle,0,0) );
 367         sprintf(idSlatCh6,"LB%d",3*kNslats3-2+i);
 368         gMC->Gsvolu(idSlatCh6,"BOX",kSlatMaterial,spar,3);
 369         detElemId = 600 + (i + kNslats3-1-4);
 370         GetEnvelopes(5)->AddEnvelope(idSlatCh6, detElemId, true, TGeoTranslation(-xSlat3, ySlat3, zSlat3 - dzCh3),
 371                                      TGeoRotation("rot6",90,180+angle,90,90+angle,180,0) );
 372
 373         if (i > 0) {
 374           sprintf(idSlatCh6,"LB%d",kNslats3-1-i);
 375           gMC->Gsvolu(idSlatCh6,"BOX",kSlatMaterial,spar,3);
 376           detElemId = 609 + (i + kNslats3-1-4);
 377           GetEnvelopes(5)->AddEnvelope(idSlatCh6, detElemId, true, TGeoTranslation(xSlat3, -ySlat3, -zSlat3 + dzCh3),
 378                                        TGeoRotation("rot7",90,angle,90,270+angle,180,0) );
 379
 380           sprintf(idSlatCh6,"LB%d",3*kNslats3-2-i);
 381           gMC->Gsvolu(idSlatCh6,"BOX",kSlatMaterial,spar,3);
 382           detElemId = 618 - (i + kNslats3-1-4);
 383           GetEnvelopes(5)->AddEnvelope(idSlatCh6, detElemId, true, TGeoTranslation(-xSlat3, -ySlat3, zSlat3 - dzCh3),
 384                                        TGeoRotation("rot8",90,180+angle,90,270+angle,0,0) );
 385         }
 386       }
 387
 388       // create the panel volume
 389
 390       gMC->Gsvolu("S05C","BOX",kCarbonMaterial,panelpar,3);
 391       gMC->Gsvolu("SB5C","BOX",kCarbonMaterial,panelpar2,3);
 392       gMC->Gsvolu("S06C","BOX",kCarbonMaterial,panelpar,3);
 393
 394       // create the nomex volume (honey comb)
 395
 396       gMC->Gsvolu("S05N","BOX",kNomexMaterial,nomexpar,3);
 397       gMC->Gsvolu("SB5N","BOX",kNomexMaterial,nomexpar2,3);
 398       gMC->Gsvolu("S06N","BOX",kNomexMaterial,nomexpar,3);
 399
 400       // create the nomex volume (bulk)
 401
 402       gMC->Gsvolu("S05X","BOX",kNomexBMaterial,nomexbpar,3);
 403       gMC->Gsvolu("SB5X","BOX",kNomexBMaterial,nomexbpar2,3);
 404       gMC->Gsvolu("S06X","BOX",kNomexBMaterial,nomexbpar,3);
 405
 406       // create the insulating material volume
 407
 408       gMC->Gsvolu("S05I","BOX",kInsuMaterial,insupar,3);
 409       gMC->Gsvolu("SB5I","BOX",kInsuMaterial,insupar2,3);
 410       gMC->Gsvolu("S06I","BOX",kInsuMaterial,insupar,3);
 411
 412       // create the PCB volume
 413
 414       gMC->Gsvolu("S05P","BOX",kPcbMaterial,pcbpar,3);
 415       gMC->Gsvolu("SB5P","BOX",kPcbMaterial,pcbpar2,3);
 416       gMC->Gsvolu("S06P","BOX",kPcbMaterial,pcbpar,3);
 417
 418       // create the sensitive volumes,
 419
 420       gMC->Gsvolu("S05G","BOX",kSensMaterial,dum,0);
 421       gMC->Gsvolu("S06G","BOX",kSensMaterial,dum,0);
 422
 423       // create the vertical frame volume
 424
 425       gMC->Gsvolu("S05V","BOX",kVframeMaterial,vFramepar,3);
 426       gMC->Gsvolu("S06V","BOX",kVframeMaterial,vFramepar,3);
 427
 428       // create the horizontal frame volume
 429
 430       gMC->Gsvolu("S05H","BOX",kHframeMaterial,hFramepar,3);
 431       gMC->Gsvolu("SB5H","BOX",kHframeMaterial,hFramepar2,3);
 432       gMC->Gsvolu("S06H","BOX",kHframeMaterial,hFramepar,3);
 433
 434       // create the horizontal border volume
 435
 436       gMC->Gsvolu("S05B","BOX",kBframeMaterial,bFramepar,3);
 437       gMC->Gsvolu("SB5B","BOX",kBframeMaterial,bFramepar2,3);
 438       gMC->Gsvolu("S06B","BOX",kBframeMaterial,bFramepar,3);
 439
 440       index = 0;
 441       for (i = 0; i<kNslats3; i++){
 442         for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
 443
 444           if (i == 0 && quadrant == 2) continue;
 445           if (i == 0 && quadrant == 4) continue;
 446
 447           sprintf(idSlatCh5,"LA%d",ConvertSlatNum(i,quadrant,kNslats3-1));
 448           sprintf(idSlatCh6,"LB%d",ConvertSlatNum(i,quadrant,kNslats3-1));
 449           Float_t xvFrame  = (slatLength3[i] - kVframeLength)/2.;
 450           Float_t xvFrame2  = xvFrame;
 451
 452           if (i == 0 || i == 1 || i == 2) xvFrame2 -= pcbDLength3/2.;
 453
 454           // position the vertical frames
 455           if ( i > 2) {
 456             GetEnvelopes(4)->AddEnvelopeConstituent("S05V", idSlatCh5,
 457                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 458             GetEnvelopes(4)->AddEnvelopeConstituent("S05V", idSlatCh5,
 459                                                     (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 460             GetEnvelopes(5)->AddEnvelopeConstituent("S06V", idSlatCh6,
 461                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 462             GetEnvelopes(5)->AddEnvelopeConstituent("S06V", idSlatCh6,
 463                                                     (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 464           }
 465
 466           if (i == 2) {
 467             GetEnvelopes(4)->AddEnvelopeConstituent("S05V", idSlatCh5,
 468                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame2,0.,0.));
 469             GetEnvelopes(4)->AddEnvelopeConstituent("S05V", idSlatCh5,
 470                                                     (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 471             GetEnvelopes(5)->AddEnvelopeConstituent("S06V", idSlatCh6,
 472                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 473             GetEnvelopes(5)->AddEnvelopeConstituent("S06V", idSlatCh6,
 474                                                     (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 475           }
 476
 477           if (i == 0 || i == 1) { // no rounded spacer for the moment (Ch. Finck)
 478             GetEnvelopes(4)->AddEnvelopeConstituent("S05V", idSlatCh5,
 479                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame2,0.,0.));
 480             GetEnvelopes(5)->AddEnvelopeConstituent("S06V", idSlatCh6,
 481                                                     (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 482           }
 483
 484           // position the panels and the insulating material
 485           for (j = 0; j < kNPCB3[i]; j++){
 486             if (i == 1 && j == 0) continue;
 487             if (i == 0 && j == 0) continue;
 488             index++;
 489             Float_t xx = kSensLength * (-kNPCB3[i]/2. + j + 0.5);
 490             Float_t xx2 = xx - pcbDLength3/2.;
 491
 492             Float_t zPanel = spar[2] - nomexbpar[2];
 493
 494             if ( (i == 0 || i == 1 || i == 2) && j == kNPCB3[i]-1) { // 1 pcb is shortened by 5cm
 495               GetEnvelopes(4)->AddEnvelopeConstituent("SB5X", idSlatCh5, 2*index-1,TGeoTranslation(xx2,0.,zPanel));
 496               GetEnvelopes(4)->AddEnvelopeConstituent("SB5X", idSlatCh5, 2*index,TGeoTranslation(xx2,0.,-zPanel));
 497               GetEnvelopes(4)->AddEnvelopeConstituent("SB5I", idSlatCh5, index,TGeoTranslation(xx2,0.,0.));
 498             } else {
 499               GetEnvelopes(4)->AddEnvelopeConstituent("S05X", idSlatCh5, 2*index-1,TGeoTranslation(xx,0.,zPanel));
 500               GetEnvelopes(4)->AddEnvelopeConstituent("S05X", idSlatCh5, 2*index,TGeoTranslation(xx,0.,-zPanel));
 501               GetEnvelopes(4)->AddEnvelopeConstituent("S05I", idSlatCh5, index,TGeoTranslation(xx,0.,0.));
 502             }
 503             GetEnvelopes(5)->AddEnvelopeConstituent("S06X", idSlatCh6, 2*index-1,TGeoTranslation(xx,0.,zPanel));
 504             GetEnvelopes(5)->AddEnvelopeConstituent("S06X", idSlatCh6, 2*index,TGeoTranslation(xx,0.,-zPanel));
 505             GetEnvelopes(5)->AddEnvelopeConstituent("S06I", idSlatCh6, index,TGeoTranslation(xx,0.,0.));
 506
 507           }
 508         }
 509       }
 510
 511       // position the nomex volume inside the panel volume
 512       gMC->Gspos("S05N",1,"S05C",0.,0.,0.,0,"ONLY");
 513       gMC->Gspos("SB5N",1,"SB5C",0.,0.,0.,0,"ONLY");
 514       gMC->Gspos("S06N",1,"S06C",0.,0.,0.,0,"ONLY");
 515
 516       // position panel volume inside the bulk nomex material volume
 517       gMC->Gspos("S05C",1,"S05X",0.,0.,kNomexBWidth/2.,0,"ONLY");
 518       gMC->Gspos("SB5C",1,"SB5X",0.,0.,kNomexBWidth/2.,0,"ONLY");
 519       gMC->Gspos("S06C",1,"S06X",0.,0.,kNomexBWidth/2.,0,"ONLY");
 520
 521       // position the PCB volume inside the insulating material volume
 522       gMC->Gspos("S05P",1,"S05I",0.,0.,0.,0,"ONLY");
 523       gMC->Gspos("SB5P",1,"SB5I",0.,0.,0.,0,"ONLY");
 524       gMC->Gspos("S06P",1,"S06I",0.,0.,0.,0,"ONLY");
 525
 526       // position the horizontal frame volume inside the PCB volume
 527       gMC->Gspos("S05H",1,"S05P",0.,0.,0.,0,"ONLY");
 528       gMC->Gspos("SB5H",1,"SB5P",0.,0.,0.,0,"ONLY");
 529       gMC->Gspos("S06H",1,"S06P",0.,0.,0.,0,"ONLY");
 530
 531       // position the sensitive volume inside the horizontal frame volume
 532       gMC->Gsposp("S05G",1,"S05H",0.,0.,0.,0,"ONLY",senspar,3);
 533       gMC->Gsposp("S05G",1,"SB5H",0.,0.,0.,0,"ONLY",senspar2,3);
 534       gMC->Gsposp("S06G",1,"S06H",0.,0.,0.,0,"ONLY",senspar,3);
 535
 536
 537       // position the border volumes inside the PCB volume
 538       Float_t yborder = ( kPcbHeight - kBframeHeight ) / 2.;
 539       gMC->Gspos("S05B",1,"S05P",0., yborder,0.,0,"ONLY");
 540       gMC->Gspos("S05B",2,"S05P",0.,-yborder,0.,0,"ONLY");
 541       gMC->Gspos("SB5B",1,"SB5P",0., yborder,0.,0,"ONLY");
 542       gMC->Gspos("SB5B",2,"SB5P",0.,-yborder,0.,0,"ONLY");
 543
 544       gMC->Gspos("S06B",1,"S06P",0., yborder,0.,0,"ONLY");
 545       gMC->Gspos("S06B",2,"S06P",0.,-yborder,0.,0,"ONLY");
 546
 547       // create the NULOC volume and position it in the horizontal frame
 548       gMC->Gsvolu("S05E","BOX",kNulocMaterial,nulocpar,3);
 549       gMC->Gsvolu("S06E","BOX",kNulocMaterial,nulocpar,3);
 550       index = 0;
 551       Float_t xxmax2 = xxmax - pcbDLength3/2.;
 552       for (xx = -xxmax; xx <= xxmax; xx += 2*kNulocLength) {
 553         index++;
 554         gMC->Gspos("S05E",2*index-1,"S05B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
 555         gMC->Gspos("S05E",2*index  ,"S05B", xx, 0., kBframeWidth/2. - kNulocWidth/2, 0, "ONLY");
 556         gMC->Gspos("S06E",2*index-1,"S06B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
 557         gMC->Gspos("S06E",2*index  ,"S06B", xx, 0., kBframeWidth/2.-  kNulocWidth/2, 0, "ONLY");
 558         if (xx > -xxmax2 && xx< xxmax2) {
 559           gMC->Gspos("S05E",2*index-1,"SB5B", xx, 0.,-kBframeWidth/2.+ kNulocWidth/2, 0, "ONLY");
 560           gMC->Gspos("S05E",2*index  ,"SB5B", xx, 0., kBframeWidth/2.- kNulocWidth/2, 0, "ONLY");
 561         }
 562       }
 563
 564       // position the volumes approximating the circular section of the pipe
 565       Float_t epsilon = 0.001;
 566       Int_t ndiv = 6;
 567       Int_t imax = 1;
 568       Double_t divpar[3];
 569       Double_t dydiv = kSensHeight/ndiv;
 570       Double_t ydiv  = (kSensHeight - dydiv)/2.;
 571       Double_t rmin  = iChamber1->RInner();// Same radius for both chamber in St3
 572       Double_t xdiv  = 0.;
 573       Float_t xvol;
 574       Float_t yvol;
 575
 576       for (Int_t idiv = 0; idiv < ndiv; idiv++){
 577         ydiv += dydiv;
 578         xdiv = 0.;
 579         if (ydiv < rmin) xdiv = rmin * TMath::Sin( TMath::ACos((ydiv-dydiv/2.)/rmin) );
 580         divpar[0] = (kPcbLength - xdiv)/2.;
 581         divpar[1] = dydiv/2. - epsilon;
 582         divpar[2] = kSensWidth/2.;
 583         xvol = (kPcbLength + xdiv)/2.;
 584         yvol = ydiv;
 585
 586         // Volumes close to the beam pipe for slat i=1 so 4 slats per chamber
 587         for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
 588           sprintf(idSlatCh5,"LA%d",ConvertSlatNum(1,quadrant,kNslats3-1));
 589           sprintf(idSlatCh6,"LB%d",ConvertSlatNum(1,quadrant,kNslats3-1));
 590
 591           GetEnvelopes(4)->AddEnvelopeConstituentParam("S05G", idSlatCh5, quadrant*100+imax+4*idiv+1,
 592                                                        TGeoTranslation(xvol-(kPcbLength * kNPCB3[1]/2.),yvol-kPcbLength,0.),3,divpar);
 593
 594           GetEnvelopes(5)->AddEnvelopeConstituentParam("S06G", idSlatCh6,  quadrant*100+imax+4*idiv+1,
 595                                                        TGeoTranslation(xvol-(kPcbLength * kNPCB3[1]/2.),yvol-kPcbLength,0.),3,divpar);
 596         }
 597       }
 598
 599       // Volumes close to the beam pipe for slat i=0 so 2 slats per chamber (central slat for station 3)
 600       //      Gines Martinez, Subatech sep 04
 601       // 9 box volumes are used to define the PCB closed to the beam pipe of the slat 122000SR1 of chamber 5 and 6 of St3
 602       // Accordingly to plan PQ-LAT-SR1 of CEA-DSM-DAPNIA-SIS/BE ph HARDY 8-Oct-2002
 603       // Rmin = 31.5 cm
 604       rmin = iChamber1->RInner(); // Same radius for both chamber in St3
 605       ndiv  = 9;
 606       dydiv = kSensHeight/ndiv;           // Vertical size of the box volume approximating the rounded PCB
 607       ydiv  = -kSensHeight/2 + dydiv/2.;   // Initializing vertical position of the volume from bottom
 608       xdiv  = 0.;                         // Initializing horizontal position of the box volumes
 609
 610       for (Int_t idiv = 0; idiv < ndiv; idiv++){
 611         xdiv = TMath::Abs( rmin * TMath::Sin( TMath::ACos(ydiv/rmin) ) );
 612         divpar[0] = (kPcbLength - xdiv)/2.; // Dimension of the box volume
 613         divpar[1] = dydiv/2. - epsilon;
 614         divpar[2] = kSensWidth/2.;
 615         xvol = (kPcbLength + xdiv)/2.; //2D traslition for positionning of box volume
 616         yvol =  ydiv;
 617         Int_t side;
 618         for (side = 1; side <= 2; side++) {
 619           sprintf(idSlatCh5,"LA%d",4);
 620           sprintf(idSlatCh6,"LB%d",4);
 621           if(side == 2) {
 622             sprintf(idSlatCh5,"LA%d",13);
 623             sprintf(idSlatCh6,"LB%d",13);
 624           }
 625           GetEnvelopes(4)->AddEnvelopeConstituentParam("S05G", idSlatCh5,500+side*100+imax+4*idiv+1,
 626                                                        TGeoTranslation(xvol-(kPcbLength * kNPCB3[0]/2.),yvol,0.),3,divpar);
 627
 628           GetEnvelopes(5)->AddEnvelopeConstituentParam("S06G", idSlatCh6,500+side*100+imax+4*idiv+1,
 629                                                        TGeoTranslation(xvol-(kPcbLength * kNPCB3[0]/2.),yvol,0.),3,divpar);
 630         }
 631         ydiv += dydiv; // Going from bottom to top
 632       }
 633       // cout << "Geometry for Station 3...... done" << endl;
 634     }
 635
 636   if (fStations[3]) {
 637
 638
 639     // //********************************************************************
 640     // //                            Station 4                             **
 641     // //********************************************************************
 642     //      // indices 1 and 2 for first and second chambers in the station
 643     //      // iChamber (first chamber) kept for other quanties than Z,
 644     //      // assumed to be the same in both chambers
 645     //      corrected geometry (JP. Cussonneau, Ch. Finck)
 646
 647     iChamber = &fMUON->Chamber(6);
 648     iChamber1 = iChamber;
 649     iChamber2 = &fMUON->Chamber(7);
 650
 651     const Int_t   kNslats4          = 7;  // number of slats per quadrant
 652     const Int_t   kNPCB4[kNslats4]  = {5, 6, 5, 5, 4, 3, 2}; // n PCB per slat
 653     const Float_t kXpos4[kNslats4]  = {38.2, 0., 0., 0., 0., 0., 0.};
 654     const Float_t kYpos41[kNslats4] = {0., 38.2, 34.40, 36.60, 29.3, 37.0, 28.6};
 655     const Float_t kYpos42[kNslats4] = {0., 38.2, 37.85, 37.55, 29.4, 37.0, 28.6};
 656
 657     Float_t slatLength4[kNslats4];
 658
 659
 660     // Mother volume for each chamber
 661     // Outer excess and inner recess for mother volume radius
 662     // with respect to ROuter and RInner
 663     Float_t dframepIn = kRframeHeight;
 664     Float_t dframepOut= kVframeLength + 40.0; // Additional 30 cm gap is needed to wrap the corners of the slats
 665     Float_t tpar[3];
 666     Double_t dstation =  ( (-iChamber2->Z()) - (-iChamber1->Z()) ) /2.1;
 667     tpar[0] = iChamber1->RInner()-dframepIn;
 668     tpar[1] = (iChamber1->ROuter()+dframepOut);
 669     tpar[2] = dstation;
 670     gMC->Gsvolu("CH07", "TUBE", idAir, tpar, 3);
 671     gMC->Gsvolu("CH08", "TUBE", idAir, tpar, 3);
 672     iChamber1->GetGeometry()->SetVolume("CH07");
 673     iChamber2->GetGeometry()->SetVolume("CH08");
 674
 675     // create and position the slat (mother) volumes
 676
 677     char idSlatCh7[5];
 678     char idSlatCh8[5];
 679     Float_t xSlat4;
 680     Float_t ySlat41 = 0;
 681     Float_t ySlat42 = 0;
 682
 683     angle = 0.;
 684
 685     for (i = 0; i<kNslats4; i++){
 686       slatLength4[i] = kPcbLength * kNPCB4[i] + 2. * kVframeLength;
 687       xSlat4 = slatLength4[i]/2. + kDslatLength + kXpos4[i];
 688       ySlat41 += kYpos41[i];
 689       ySlat42 += kYpos42[i];
 690
 691       spar[0] = slatLength4[i]/2.;
 692       spar[1] = kSlatHeight/2.;
 693       spar[2] = kSlatWidth/2.;
 694       Float_t dzCh4 = dzCh;
 695       Float_t zSlat4 = (i%2 ==0)? -zSlat : zSlat;
 696
 697       sprintf(idSlatCh7,"LC%d",kNslats4-1+i);
 698       gMC->Gsvolu(idSlatCh7,"BOX",kSlatMaterial,spar,3);
 699       detElemId = 713 - (i + kNslats4-1-6);
 700       GetEnvelopes(6)->AddEnvelope(idSlatCh7, detElemId, true, TGeoTranslation(xSlat4, ySlat41, -zSlat4 + dzCh4),
 701                                    TGeoRotation("rot1",90,angle,90,90+angle,0,0) );
 702
 703       sprintf(idSlatCh7,"LC%d",3*kNslats4-2+i);
 704       gMC->Gsvolu(idSlatCh7,"BOX",kSlatMaterial,spar,3);
 705       detElemId = 700 + (i + kNslats4-1-6);
 706       GetEnvelopes(6)->AddEnvelope(idSlatCh7, detElemId, true, TGeoTranslation(-xSlat4, ySlat41, zSlat4 - dzCh4),
 707                                    TGeoRotation("rot2",90,180+angle,90,90+angle,180,0) );
 708
 709       if (i > 0) {
 710         sprintf(idSlatCh7,"LC%d",kNslats4-1-i);
 711         gMC->Gsvolu(idSlatCh7,"BOX",kSlatMaterial,spar,3);
 712         detElemId = 713 + (i + kNslats4-1-6);
 713         GetEnvelopes(6)->AddEnvelope(idSlatCh7, detElemId, true, TGeoTranslation(xSlat4, -ySlat41, -zSlat4 + dzCh4),
 714                                      TGeoRotation("rot3",90,angle,90,270+angle,180,0) );
 715
 716         sprintf(idSlatCh7,"LC%d",3*kNslats4-2-i);
 717         detElemId = 726 - (i + kNslats4-1-6);
 718         gMC->Gsvolu(idSlatCh7,"BOX",kSlatMaterial,spar,3);
 719         GetEnvelopes(6)->AddEnvelope(idSlatCh7, detElemId, true,
 720                                      TGeoTranslation(-xSlat4, -ySlat41, zSlat4 - dzCh4),
 721                                      TGeoRotation("rot4",90,180+angle,90,270+angle,0,0) );
 722       }
 723
 724       sprintf(idSlatCh8,"LD%d",kNslats4-1+i);
 725       gMC->Gsvolu(idSlatCh8,"BOX",kSlatMaterial,spar,3);
 726       detElemId = 813 - (i + kNslats4-1-6);
 727       GetEnvelopes(7)->AddEnvelope(idSlatCh8, detElemId, true, TGeoTranslation(xSlat4, ySlat42, -zSlat4 + dzCh4),
 728                                    TGeoRotation("rot5",90,angle,90,90+angle,0,0) );
 729
 730       sprintf(idSlatCh8,"LD%d",3*kNslats4-2+i);
 731       detElemId = 800 + (i + kNslats4-1-6);
 732       gMC->Gsvolu(idSlatCh8,"BOX",kSlatMaterial,spar,3);
 733       GetEnvelopes(7)->AddEnvelope(idSlatCh8, detElemId, true, TGeoTranslation(-xSlat4, ySlat42, zSlat4 - dzCh4),
 734                                    TGeoRotation("rot6",90,180+angle,90,90+angle,180,0) );
 735       if (i > 0) {
 736         sprintf(idSlatCh8,"LD%d",kNslats4-1-i);
 737         detElemId = 813 + (i + kNslats4-1-6);
 738         gMC->Gsvolu(idSlatCh8,"BOX",kSlatMaterial,spar,3);
 739         GetEnvelopes(7)->AddEnvelope(idSlatCh8, detElemId, true, TGeoTranslation(xSlat4, -ySlat42, -zSlat4 + dzCh4),
 740                                      TGeoRotation("rot7",90,angle,90,270+angle,180,0) );
 741         sprintf(idSlatCh8,"LD%d",3*kNslats4-2-i);
 742         detElemId = 826 - (i + kNslats4-1-6);
 743         gMC->Gsvolu(idSlatCh8,"BOX",kSlatMaterial,spar,3);
 744         GetEnvelopes(7)->AddEnvelope(idSlatCh8, detElemId, true, TGeoTranslation(-xSlat4, -ySlat42, zSlat4 - dzCh4),
 745                                      TGeoRotation("rot8",90,180+angle,90,270+angle,0,0) );
 746       }
 747     }
 748
 749     // create the panel volume
 750
 751     gMC->Gsvolu("S07C","BOX",kCarbonMaterial,panelpar,3);
 752     gMC->Gsvolu("S08C","BOX",kCarbonMaterial,panelpar,3);
 753
 754     // create the nomex volume
 755
 756     gMC->Gsvolu("S07N","BOX",kNomexMaterial,nomexpar,3);
 757     gMC->Gsvolu("S08N","BOX",kNomexMaterial,nomexpar,3);
 758
 759
 760     // create the nomex volume (bulk)
 761
 762     gMC->Gsvolu("S07X","BOX",kNomexBMaterial,nomexbpar,3);
 763     gMC->Gsvolu("S08X","BOX",kNomexBMaterial,nomexbpar,3);
 764
 765     // create the insulating material volume
 766
 767     gMC->Gsvolu("S07I","BOX",kInsuMaterial,insupar,3);
 768     gMC->Gsvolu("S08I","BOX",kInsuMaterial,insupar,3);
 769
 770     // create the PCB volume
 771
 772     gMC->Gsvolu("S07P","BOX",kPcbMaterial,pcbpar,3);
 773     gMC->Gsvolu("S08P","BOX",kPcbMaterial,pcbpar,3);
 774
 775     // create the sensitive volumes,
 776
 777     gMC->Gsvolu("S07G","BOX",kSensMaterial,dum,0);
 778     gMC->Gsvolu("S08G","BOX",kSensMaterial,dum,0);
 779
 780     // create the vertical frame volume
 781
 782     gMC->Gsvolu("S07V","BOX",kVframeMaterial,vFramepar,3);
 783     gMC->Gsvolu("S08V","BOX",kVframeMaterial,vFramepar,3);
 784
 785     // create the horizontal frame volume
 786
 787     gMC->Gsvolu("S07H","BOX",kHframeMaterial,hFramepar,3);
 788     gMC->Gsvolu("S08H","BOX",kHframeMaterial,hFramepar,3);
 789
 790     // create the horizontal border volume
 791
 792     gMC->Gsvolu("S07B","BOX",kBframeMaterial,bFramepar,3);
 793     gMC->Gsvolu("S08B","BOX",kBframeMaterial,bFramepar,3);
 794
 795     index = 0;
 796     for (i = 0; i < kNslats4; i++){
 797       for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
 798
 799         if (i == 0 && quadrant == 2) continue;
 800         if (i == 0 && quadrant == 4) continue;
 801
 802         sprintf(idSlatCh7,"LC%d",ConvertSlatNum(i,quadrant,kNslats4-1));
 803         sprintf(idSlatCh8,"LD%d",ConvertSlatNum(i,quadrant,kNslats4-1));
 804         Float_t xvFrame  = (slatLength4[i] - kVframeLength)/2.;
 805
 806         // position the vertical frames
 807         if (i != 1) {
 808           GetEnvelopes(6)->AddEnvelopeConstituent("S07V", idSlatCh7, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 809           GetEnvelopes(6)->AddEnvelopeConstituent("S07V", idSlatCh7, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 810           GetEnvelopes(7)->AddEnvelopeConstituent("S08V", idSlatCh8, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 811           GetEnvelopes(7)->AddEnvelopeConstituent("S08V", idSlatCh8, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 812         } else { // no rounded spacer yet
 813           GetEnvelopes(6)->AddEnvelopeConstituent("S07V", idSlatCh7, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 814           // GetEnvelopes(6)->AddEnvelopeConstituent("S07V", idSlatCh7, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 815           GetEnvelopes(7)->AddEnvelopeConstituent("S08V", idSlatCh8, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
 816           // GetEnvelopes(7)->AddEnvelopeConstituent("S08V", idSlatCh8, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
 817         }
 818         // position the panels and the insulating material
 819         for (j = 0; j < kNPCB4[i]; j++){
 820           if (i == 1 && j == 0) continue;
 821           index++;
 822           Float_t xx = kSensLength * (-kNPCB4[i]/2.+j+.5);
 823
 824           Float_t zPanel = spar[2] - nomexbpar[2];
 825           GetEnvelopes(6)->AddEnvelopeConstituent("S07X", idSlatCh7, 2*index-1,TGeoTranslation(xx,0.,zPanel));
 826           GetEnvelopes(6)->AddEnvelopeConstituent("S07X", idSlatCh7, 2*index,TGeoTranslation(xx,0.,-zPanel));
 827           GetEnvelopes(6)->AddEnvelopeConstituent("S07I", idSlatCh7, index,TGeoTranslation(xx,0.,0.));
 828           GetEnvelopes(7)->AddEnvelopeConstituent("S08X", idSlatCh8, 2*index-1,TGeoTranslation(xx,0.,zPanel));
 829           GetEnvelopes(7)->AddEnvelopeConstituent("S08X", idSlatCh8, 2*index,TGeoTranslation(xx,0.,-zPanel));
 830           GetEnvelopes(7)->AddEnvelopeConstituent("S08I", idSlatCh8, index,TGeoTranslation(xx,0.,0.));
 831         }
 832       }
 833     }
 834
 835     // position the nomex volume inside the panel volume
 836     gMC->Gspos("S07N",1,"S07C",0.,0.,0.,0,"ONLY");
 837     gMC->Gspos("S08N",1,"S08C",0.,0.,0.,0,"ONLY");
 838
 839     // position panel volume inside the bulk nomex material volume
 840     gMC->Gspos("S07C",1,"S07X",0.,0.,kNomexBWidth/2.,0,"ONLY");
 841     gMC->Gspos("S08C",1,"S08X",0.,0.,kNomexBWidth/2.,0,"ONLY");
 842
 843     // position the PCB volume inside the insulating material volume
 844     gMC->Gspos("S07P",1,"S07I",0.,0.,0.,0,"ONLY");
 845     gMC->Gspos("S08P",1,"S08I",0.,0.,0.,0,"ONLY");
 846
 847     // position the horizontal frame volume inside the PCB volume
 848     gMC->Gspos("S07H",1,"S07P",0.,0.,0.,0,"ONLY");
 849     gMC->Gspos("S08H",1,"S08P",0.,0.,0.,0,"ONLY");
 850
 851     // position the sensitive volume inside the horizontal frame volume
 852     gMC->Gsposp("S07G",1,"S07H",0.,0.,0.,0,"ONLY",senspar,3);
 853     gMC->Gsposp("S08G",1,"S08H",0.,0.,0.,0,"ONLY",senspar,3);
 854
 855     // position the border volumes inside the PCB volume
 856     Float_t yborder = ( kPcbHeight - kBframeHeight ) / 2.;
 857     gMC->Gspos("S07B",1,"S07P",0., yborder,0.,0,"ONLY");
 858     gMC->Gspos("S07B",2,"S07P",0.,-yborder,0.,0,"ONLY");
 859     gMC->Gspos("S08B",1,"S08P",0., yborder,0.,0,"ONLY");
 860     gMC->Gspos("S08B",2,"S08P",0.,-yborder,0.,0,"ONLY");
 861
 862     // create the NULOC volume and position it in the horizontal frame
 863
 864     gMC->Gsvolu("S07E","BOX",kNulocMaterial,nulocpar,3);
 865     gMC->Gsvolu("S08E","BOX",kNulocMaterial,nulocpar,3);
 866     index = 0;
 867     for (xx = -xxmax; xx <= xxmax; xx += 2*kNulocLength) {
 868       index++;
 869       gMC->Gspos("S07E",2*index-1,"S07B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
 870       gMC->Gspos("S07E",2*index  ,"S07B", xx, 0., kBframeWidth/2. - kNulocWidth/2, 0, "ONLY");
 871       gMC->Gspos("S08E",2*index-1,"S08B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
 872       gMC->Gspos("S08E",2*index  ,"S08B", xx, 0., kBframeWidth/2. - kNulocWidth/2, 0, "ONLY");
 873     }
 874
 875     // position the volumes approximating the circular section of the pipe
 876
 877     Float_t epsilon = 0.001;
 878     Int_t ndiv = 10;
 879     Int_t imax = 1;
 880     Double_t divpar[3];
 881     Double_t dydiv = kSensHeight/ndiv;
 882     Double_t ydiv  = (kSensHeight - dydiv)/2.;
 883     Float_t rmin   = iChamber1->RInner(); // Same radius for both chamber of St4
 884     Float_t xdiv   = 0.;
 885     Float_t xvol;
 886     Float_t yvol;
 887
 888     for (Int_t idiv = 0; idiv < ndiv; idiv++){
 889       ydiv += dydiv;
 890       xdiv = 0.;
 891       if (ydiv < rmin) xdiv = rmin * TMath::Sin( TMath::ACos((ydiv-dydiv/2.)/rmin) );
 892       divpar[0] = (kPcbLength - xdiv)/2.;
 893       divpar[1] = dydiv/2. - epsilon;
 894       divpar[2] = kSensWidth/2.;
 895       xvol = (kPcbLength + xdiv)/2.;
 896       yvol = ydiv ;
 897
 898       for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
 899         sprintf(idSlatCh7,"LC%d",ConvertSlatNum(1,quadrant,kNslats4-1));
 900         sprintf(idSlatCh8,"LD%d",ConvertSlatNum(1,quadrant,kNslats4-1));
 901
 902         GetEnvelopes(6)->AddEnvelopeConstituentParam("S07G",idSlatCh7, quadrant*100+imax+4*idiv+1,
 903                                                      TGeoTranslation(xvol-kPcbLength * kNPCB4[1]/2.,yvol-kPcbLength,0.),3,divpar);
 904
 905         GetEnvelopes(7)->AddEnvelopeConstituentParam("S08G", idSlatCh8, quadrant*100+imax+4*idiv+1,
 906                                                      TGeoTranslation(xvol-kPcbLength * kNPCB4[1]/2.,yvol-kPcbLength,0.),3,divpar);
 907       }
 908     }
 909     // cout << "Geometry for Station 4...... done" << endl;
 910
 911   }
 912
 913   if (fStations[4]) {
 914
 915
 916     // //********************************************************************
 917     // //                            Station 5                             **
 918     // //********************************************************************
 919     //      // indices 1 and 2 for first and second chambers in the station
 920     //      // iChamber (first chamber) kept for other quanties than Z,
 921     //      // assumed to be the same in both chambers
 922     //      corrected geometry (JP. Cussonneau, Ch. Finck)
 923
 924     iChamber = &fMUON->Chamber(8);
 925     iChamber1 = iChamber;
 926     iChamber2 = &fMUON->Chamber(9);
 927
 928     const Int_t   kNslats5         = 7;  // number of slats per quadrant
 929     const Int_t   kNPCB5[kNslats5] = {5, 6, 6, 6, 5, 4, 3}; // n PCB per slat
 930     const Float_t kXpos5[kNslats5] = {38.2, 0., 0., 0., 0., 0., 0.};
 931     const Float_t kYpos5[kNslats5] = {0., 38.2, 37.9, 37.6, 37.3, 37.05, 36.75};
 932     Float_t slatLength5[kNslats5];
 933
 934     // Mother volume for each chamber
 935     // Outer excess and inner recess for mother volume radius
 936     // with respect to ROuter and RInner
 937     Float_t dframepIn = kRframeHeight;
 938     Float_t dframepOut= kVframeLength + 40.0; // Additional 40 cm gap is needed to wrap the corners of the slats
 939     Float_t tpar[3];
 940     Double_t dstation =  ( (-iChamber2->Z()) - (-iChamber1->Z()) ) /2.3;
 941     tpar[0] = iChamber1->RInner()-dframepIn;
 942     tpar[1] = (iChamber1->ROuter()+dframepOut);
 943     tpar[2] = dstation;
 944     gMC->Gsvolu("CH09", "TUBE", idAir, tpar, 3);
 945     gMC->Gsvolu("CH10", "TUBE", idAir, tpar, 3);
 946     iChamber1->GetGeometry()->SetVolume("CH09");
 947     iChamber2->GetGeometry()->SetVolume("CH10");
 948
 949     // create and position the slat (mother) volumes
 950
 951     char idSlatCh9[5];
 952     char idSlatCh10[5];
 953     Float_t xSlat5;
 954     Float_t ySlat5 = 0;
 955     angle = 0.;
 956
 957     for (i = 0; i < kNslats5; i++){
 958
 959       slatLength5[i] = kPcbLength * kNPCB5[i] + 2.* kVframeLength;
 960       xSlat5 = slatLength5[i]/2. + kDslatLength + kXpos5[i];
 961       ySlat5 += kYpos5[i];
 962
 963       spar[0] = slatLength5[i]/2.;
 964       spar[1] = kSlatHeight/2.;
 965       spar[2] = kSlatWidth/2.;
 966
 967       Float_t dzCh5  = dzCh;
 968       Float_t zSlat5 = (i%2 ==0)? -zSlat : zSlat;
 969
 970       sprintf(idSlatCh9,"LE%d",kNslats5-1+i);
 971       detElemId = 913 - (i + kNslats5-1-6);
 972       gMC->Gsvolu(idSlatCh9,"BOX",kSlatMaterial,spar,3);
 973       GetEnvelopes(8)->AddEnvelope(idSlatCh9, detElemId, true, TGeoTranslation(xSlat5, ySlat5, -zSlat5 + dzCh5),
 974                                    TGeoRotation("rot1",90,angle,90,90+angle,0,0) );
 975
 976       sprintf(idSlatCh9,"LE%d",3*kNslats5-2+i);
 977       detElemId = 900 + (i + kNslats5-1-6);
 978       gMC->Gsvolu(idSlatCh9,"BOX",kSlatMaterial,spar,3);
 979       GetEnvelopes(8)->AddEnvelope(idSlatCh9, detElemId, true, TGeoTranslation(-xSlat5, ySlat5, zSlat5 - dzCh5),
 980                                    TGeoRotation("rot2",90,180+angle,90,90+angle,180,0) );
 981
 982       if (i > 0) {
 983         sprintf(idSlatCh9,"LE%d",kNslats5-1-i);
 984         detElemId = 913 + (i + kNslats5-1-6);
 985         gMC->Gsvolu(idSlatCh9,"BOX",kSlatMaterial,spar,3);
 986         GetEnvelopes(8)->AddEnvelope(idSlatCh9, detElemId, true, TGeoTranslation(xSlat5, -ySlat5, -zSlat5 + dzCh5),
 987                                      TGeoRotation("rot3",90,angle,90,270+angle,180,0) );
 988
 989         sprintf(idSlatCh9,"LE%d",3*kNslats5-2-i);
 990         detElemId = 926 - (i + kNslats5-1-6);
 991         gMC->Gsvolu(idSlatCh9,"BOX",kSlatMaterial,spar,3);
 992         GetEnvelopes(8)->AddEnvelope(idSlatCh9, detElemId, true, TGeoTranslation(-xSlat5, -ySlat5, zSlat5 - dzCh5),
 993                                      TGeoRotation("rot4",90,180+angle,90,270+angle,0,0)  );
 994       }
 995
 996       sprintf(idSlatCh10,"LF%d",kNslats5-1+i);
 997       detElemId = 1013 - (i + kNslats5-1-6);
 998       gMC->Gsvolu(idSlatCh10,"BOX",kSlatMaterial,spar,3);
 999       GetEnvelopes(9)->AddEnvelope(idSlatCh10, detElemId, true, TGeoTranslation(xSlat5, ySlat5, -zSlat5 + dzCh5),
1000                                    TGeoRotation("rot5",90,angle,90,90+angle,0,0) );
1001
1002       sprintf(idSlatCh10,"LF%d",3*kNslats5-2+i);
1003       detElemId = 1000 + (i + kNslats5-1-6);
1004       gMC->Gsvolu(idSlatCh10,"BOX",kSlatMaterial,spar,3);
1005       GetEnvelopes(9)->AddEnvelope(idSlatCh10, detElemId, true, TGeoTranslation(-xSlat5, ySlat5, zSlat5 - dzCh5),
1006                                    TGeoRotation("rot6",90,180+angle,90,90+angle,180,0) );
1007
1008       if (i > 0) {
1009         sprintf(idSlatCh10,"LF%d",kNslats5-1-i);
1010         detElemId = 1013 + (i + kNslats5-1-6);
1011         gMC->Gsvolu(idSlatCh10,"BOX",kSlatMaterial,spar,3);
1012         GetEnvelopes(9)->AddEnvelope(idSlatCh10, detElemId, true, TGeoTranslation(xSlat5, -ySlat5, -zSlat5 + dzCh5),
1013                                      TGeoRotation("rot7",90,angle,90,270+angle,180,0) );
1014         sprintf(idSlatCh10,"LF%d",3*kNslats5-2-i);
1015         detElemId = 1026 - (i + kNslats5-1-6);
1016         gMC->Gsvolu(idSlatCh10,"BOX",kSlatMaterial,spar,3);
1017         GetEnvelopes(9)->AddEnvelope(idSlatCh10, detElemId, true, TGeoTranslation(-xSlat5, -ySlat5, zSlat5 - dzCh5),
1018                                      TGeoRotation("rot8",90,180+angle,90,270+angle,0,0) );
1019       }
1020     }
1021
1022     // create the panel volume
1023
1024     gMC->Gsvolu("S09C","BOX",kCarbonMaterial,panelpar,3);
1025     gMC->Gsvolu("S10C","BOX",kCarbonMaterial,panelpar,3);
1026
1027     // create the nomex volume
1028
1029     gMC->Gsvolu("S09N","BOX",kNomexMaterial,nomexpar,3);
1030     gMC->Gsvolu("S10N","BOX",kNomexMaterial,nomexpar,3);
1031
1032
1033     // create the nomex volume (bulk)
1034
1035     gMC->Gsvolu("S09X","BOX",kNomexBMaterial,nomexbpar,3);
1036     gMC->Gsvolu("S10X","BOX",kNomexBMaterial,nomexbpar,3);
1037
1038     // create the insulating material volume
1039
1040     gMC->Gsvolu("S09I","BOX",kInsuMaterial,insupar,3);
1041     gMC->Gsvolu("S10I","BOX",kInsuMaterial,insupar,3);
1042
1043     // create the PCB volume
1044
1045     gMC->Gsvolu("S09P","BOX",kPcbMaterial,pcbpar,3);
1046     gMC->Gsvolu("S10P","BOX",kPcbMaterial,pcbpar,3);
1047
1048     // create the sensitive volumes,
1049
1050     gMC->Gsvolu("S09G","BOX",kSensMaterial,dum,0);
1051     gMC->Gsvolu("S10G","BOX",kSensMaterial,dum,0);
1052
1053     // create the vertical frame volume
1054
1055     gMC->Gsvolu("S09V","BOX",kVframeMaterial,vFramepar,3);
1056     gMC->Gsvolu("S10V","BOX",kVframeMaterial,vFramepar,3);
1057
1058     // create the horizontal frame volume
1059
1060     gMC->Gsvolu("S09H","BOX",kHframeMaterial,hFramepar,3);
1061     gMC->Gsvolu("S10H","BOX",kHframeMaterial,hFramepar,3);
1062
1063     // create the horizontal border volume
1064
1065     gMC->Gsvolu("S09B","BOX",kBframeMaterial,bFramepar,3);
1066     gMC->Gsvolu("S10B","BOX",kBframeMaterial,bFramepar,3);
1067
1068     index = 0;
1069     for (i = 0; i < kNslats5; i++){
1070       for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
1071
1072         if (i == 0 && quadrant == 2) continue;
1073         if (i == 0 && quadrant == 4) continue;
1074
1075         sprintf(idSlatCh9,"LE%d",ConvertSlatNum(i,quadrant,kNslats5-1));
1076         sprintf(idSlatCh10,"LF%d",ConvertSlatNum(i,quadrant,kNslats5-1));
1077         Float_t xvFrame  = (slatLength5[i] - kVframeLength)/2.; // ok
1078
1079         // position the vertical frames (spacers)
1080         if (i != 1) {
1081           GetEnvelopes(8)->AddEnvelopeConstituent("S09V", idSlatCh9, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
1082           GetEnvelopes(8)->AddEnvelopeConstituent("S09V", idSlatCh9, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
1083           GetEnvelopes(9)->AddEnvelopeConstituent("S10V", idSlatCh10, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
1084           GetEnvelopes(9)->AddEnvelopeConstituent("S10V", idSlatCh10, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
1085         } else {  // no rounded spacer yet
1086           GetEnvelopes(8)->AddEnvelopeConstituent("S09V", idSlatCh9, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
1087           //       GetEnvelopes(8)->AddEnvelopeConstituent("S09V", idSlatCh9, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
1088           GetEnvelopes(9)->AddEnvelopeConstituent("S10V", idSlatCh10, (2*i-1)*10+quadrant,TGeoTranslation(xvFrame,0.,0.));
1089           //       GetEnvelopes(9)->AddEnvelopeConstituent("S10V", idSlatCh10, (2*i)*10+quadrant,TGeoTranslation(-xvFrame,0.,0.));
1090         }
1091
1092         // position the panels and the insulating material
1093         for (j = 0; j < kNPCB5[i]; j++){
1094           if (i == 1 && j == 0) continue;
1095           index++;
1096           Float_t xx = kSensLength * (-kNPCB5[i]/2.+j+.5);
1097
1098           Float_t zPanel = spar[2] - nomexbpar[2];
1099           GetEnvelopes(8)->AddEnvelopeConstituent("S09X", idSlatCh9, 2*index-1,TGeoTranslation(xx,0.,zPanel));
1100           GetEnvelopes(8)->AddEnvelopeConstituent("S09X", idSlatCh9, 2*index,TGeoTranslation(xx,0.,-zPanel));
1101           GetEnvelopes(8)->AddEnvelopeConstituent("S09I", idSlatCh9, index,TGeoTranslation(xx,0.,0.));
1102
1103           GetEnvelopes(9)->AddEnvelopeConstituent("S10X", idSlatCh10, 2*index-1,TGeoTranslation(xx,0.,zPanel));
1104           GetEnvelopes(9)->AddEnvelopeConstituent("S10X", idSlatCh10, 2*index,TGeoTranslation(xx,0.,-zPanel));
1105           GetEnvelopes(9)->AddEnvelopeConstituent("S10I", idSlatCh10, index,TGeoTranslation(xx,0.,0.));
1106         }
1107       }
1108     }
1109
1110     // position the nomex volume inside the panel volume
1111     gMC->Gspos("S09N",1,"S09C",0.,0.,0.,0,"ONLY");
1112     gMC->Gspos("S10N",1,"S10C",0.,0.,0.,0,"ONLY");
1113
1114     // position panel  volume inside the bulk nomex material volume
1115     gMC->Gspos("S09C",1,"S09X",0.,0.,kNomexBWidth/2.,0,"ONLY");
1116     gMC->Gspos("S10C",1,"S10X",0.,0.,kNomexBWidth/2.,0,"ONLY");
1117
1118     // position the PCB volume inside the insulating material volume
1119     gMC->Gspos("S09P",1,"S09I",0.,0.,0.,0,"ONLY");
1120     gMC->Gspos("S10P",1,"S10I",0.,0.,0.,0,"ONLY");
1121
1122     // position the horizontal frame volume inside the PCB volume
1123     gMC->Gspos("S09H",1,"S09P",0.,0.,0.,0,"ONLY");
1124     gMC->Gspos("S10H",1,"S10P",0.,0.,0.,0,"ONLY");
1125
1126     // position the sensitive volume inside the horizontal frame volume
1127     gMC->Gsposp("S09G",1,"S09H",0.,0.,0.,0,"ONLY",senspar,3);
1128     gMC->Gsposp("S10G",1,"S10H",0.,0.,0.,0,"ONLY",senspar,3);
1129
1130     // position the border volumes inside the PCB volume
1131     Float_t yborder = ( kPcbHeight - kBframeHeight ) / 2.;
1132     gMC->Gspos("S09B",1,"S09P",0., yborder,0.,0,"ONLY");
1133     gMC->Gspos("S09B",2,"S09P",0.,-yborder,0.,0,"ONLY");
1134     gMC->Gspos("S10B",1,"S10P",0., yborder,0.,0,"ONLY");
1135     gMC->Gspos("S10B",2,"S10P",0.,-yborder,0.,0,"ONLY");
1136
1137     //      // create the NULOC volume and position it in the horizontal frame
1138
1139     gMC->Gsvolu("S09E","BOX",kNulocMaterial,nulocpar,3);
1140     gMC->Gsvolu("S10E","BOX",kNulocMaterial,nulocpar,3);
1141     index = 0;
1142     for (xx = -xxmax; xx <= xxmax; xx += 2*kNulocLength) {
1143       index++;
1144       gMC->Gspos("S09E",2*index-1,"S09B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
1145       gMC->Gspos("S09E",2*index  ,"S09B", xx, 0., kBframeWidth/2. - kNulocWidth/2, 0, "ONLY");
1146       gMC->Gspos("S10E",2*index-1,"S10B", xx, 0.,-kBframeWidth/2. + kNulocWidth/2, 0, "ONLY");
1147       gMC->Gspos("S10E",2*index  ,"S10B", xx, 0., kBframeWidth/2. - kNulocWidth/2, 0, "ONLY");
1148     }
1149
1150
1151     // position the volumes approximating the circular section of the pipe
1152     Float_t epsilon = 0.001;
1153     Int_t ndiv = 10;
1154     Int_t imax = 1;
1155     Double_t divpar[3];
1156     Double_t dydiv = kSensHeight/ndiv;
1157     Double_t ydiv  = (kSensHeight - dydiv)/2.;
1158     Float_t rmin   = iChamber1->RInner();
1159     Float_t xdiv   = 0.;
1160     Float_t xvol;
1161     Float_t yvol;
1162
1163     for (Int_t idiv = 0; idiv < ndiv; idiv++){
1164       ydiv += dydiv;
1165       xdiv = 0.;
1166       if (ydiv < rmin) xdiv = rmin * TMath::Sin( TMath::ACos((ydiv-dydiv/2.)/rmin) );
1167       divpar[0] = (kPcbLength - xdiv)/2.;
1168       divpar[1] = dydiv/2. - epsilon;
1169       divpar[2] = kSensWidth/2.;
1170       xvol = (kPcbLength + xdiv)/2.;
1171       yvol = ydiv;
1172
1173       for (Int_t quadrant = 1; quadrant <= 4; quadrant++) {
1174         sprintf(idSlatCh9,"LE%d",ConvertSlatNum(1,quadrant,kNslats5-1));
1175         sprintf(idSlatCh10,"LF%d",ConvertSlatNum(1,quadrant,kNslats5-1));
1176
1177         GetEnvelopes(8)->AddEnvelopeConstituentParam("S09G", idSlatCh9, quadrant*100+imax+4*idiv+1,
1178                                                      TGeoTranslation(xvol-kPcbLength * kNPCB5[1]/2.,yvol-kPcbLength,0.),3,divpar);
1179         GetEnvelopes(9)->AddEnvelopeConstituentParam("S10G", idSlatCh10,  quadrant*100+imax+4*idiv+1,
1180                                                      TGeoTranslation(xvol-kPcbLength * kNPCB5[1]/2.,yvol-kPcbLength,0.),3,divpar);
1181       }
1182     }
1183     // cout << "Geometry for Station 5...... done" << endl;
1184
1185   }
1186 }
1187
1188
1189 //______________________________________________________________________________
1190 void AliMUONSlatGeometryBuilder::SetTransformations()
1191 {
1192 // Defines the transformations for the station2 chambers.
1193 // ---
1194
1195   AliMUONChamber* iChamber1 = &fMUON->Chamber(4);
1196   Double_t zpos1 = - iChamber1->Z();
1197   iChamber1->GetGeometry()
1198     ->SetTranslation(TGeoTranslation(0., 0., zpos1));
1199
1200   AliMUONChamber* iChamber2 = &fMUON->Chamber(5);
1201   Double_t zpos2 = - iChamber2->Z();
1202   iChamber2->GetGeometry()
1203     ->SetTranslation(TGeoTranslation(0., 0., zpos2));
1204
1205  iChamber1 = &fMUON->Chamber(6);
1206   zpos1 = - iChamber1->Z();
1207   iChamber1->GetGeometry()
1208     ->SetTranslation(TGeoTranslation(0., 0., zpos1));
1209
1210   iChamber2 = &fMUON->Chamber(7);
1211   zpos2 = - iChamber2->Z();
1212   iChamber2->GetGeometry()
1213     ->SetTranslation(TGeoTranslation(0., 0., zpos2));
1214
1215  iChamber1 = &fMUON->Chamber(8);
1216   zpos1 = - iChamber1->Z();
1217   iChamber1->GetGeometry()
1218     ->SetTranslation(TGeoTranslation(0., 0., zpos1));
1219
1220   iChamber2 = &fMUON->Chamber(9);
1221   zpos2 = - iChamber2->Z();
1222   iChamber2->GetGeometry()
1223     ->SetTranslation(TGeoTranslation(0., 0., zpos2));
1224
1225 }
1226
1227 //______________________________________________________________________________
1228 void AliMUONSlatGeometryBuilder::SetSensitiveVolumes()
1229 {
1230 // Defines the sensitive volumes for slat stations chambers.
1231 // ---
1232
1233   GetGeometry(4)->SetSensitiveVolume("S05G");
1234   GetGeometry(5)->SetSensitiveVolume("S06G");
1235   GetGeometry(6)->SetSensitiveVolume("S07G");
1236   GetGeometry(7)->SetSensitiveVolume("S08G");
1237   GetGeometry(8)->SetSensitiveVolume("S09G");
1238   GetGeometry(9)->SetSensitiveVolume("S10G");
1239 }
1240
1241 //______________________________________________________________________________
1242 Int_t  AliMUONSlatGeometryBuilder::ConvertSlatNum(Int_t numslat, Int_t quadnum, Int_t fspq) const
1243 {
1244 // On-line function establishing the correspondance between numslat (the slat number on a particular quadrant (numslat->0....4 for St3))
1245 // and slatnum (the slat number on the whole panel (slatnum->1...18 for St3)
1246   numslat += 1;
1247   if (quadnum==2 || quadnum==3)
1248     numslat += fspq;
1249   else
1250     numslat = fspq + 2-numslat;
1251   numslat -= 1;
1252
1253   if (quadnum==3 || quadnum==4) numslat += 2*fspq+1;
1254
1255   return numslat;
1256 }