MUON/AliMUONTriggerGeometryBuilder.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.              *
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  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 // $Id$
  17
  18 // -----------------------------------
  19 // Class AliMUONTriggerGeometryBuilder
  20 // -----------------------------------
  21 // MUON Trigger stations geometry
  22 // construction class.
  23 // Author: Philippe Crochet (LPCCFd)
  24
  25 #include <TVirtualMC.h>
  26 #include <TGeoMatrix.h>
  27
  28 #include "AliLog.h"
  29 #include "AliRun.h"
  30
  31 #include "AliMUONTriggerGeometryBuilder.h"
  32 #include "AliMUON.h"
  33 #include "AliMUONConstants.h"
  34 #include "AliMUONGeometryModule.h"
  35 #include "AliMUONGeometryEnvelopeStore.h"
  36
  37 ClassImp(AliMUONTriggerGeometryBuilder)
  38
  39 //______________________________________________________________________________
  40 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(AliMUON* muon)
  41  : AliMUONVGeometryBuilder(10, 11, 12, 13),
  42    fMUON(muon)
  43 {
  44 // Standard constructor
  45
  46 }
  47
  48 //______________________________________________________________________________
  49 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder()
  50  : AliMUONVGeometryBuilder(),
  51    fMUON(0)
  52 {
  53 // Default constructor
  54 }
  55
  56
  57 //______________________________________________________________________________
  58 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(const AliMUONTriggerGeometryBuilder& rhs)
  59   : AliMUONVGeometryBuilder(rhs)
  60 {
  61 // Protected copy constructor
  62
  63   AliFatal("Copy constructor is not implemented.");
  64 }
  65
  66 //______________________________________________________________________________
  67 AliMUONTriggerGeometryBuilder::~AliMUONTriggerGeometryBuilder() {
  68 //
  69 }
  70
  71 //______________________________________________________________________________
  72 AliMUONTriggerGeometryBuilder&
  73 AliMUONTriggerGeometryBuilder::operator = (const AliMUONTriggerGeometryBuilder& rhs)
  74 {
  75 // Protected assignement operator
  76
  77   // check assignement to self
  78   if (this == &rhs) return *this;
  79
  80   AliFatal("Assignment operator is not implemented.");
  81
  82   return *this;
  83 }
  84
  85 //
  86 // public methods
  87 //
  88
  89 //______________________________________________________________________________
  90 void AliMUONTriggerGeometryBuilder::CreateGeometry()
  91 {
  92 // From AliMUONv1::CreateGeometry()
  93
  94     /*
  95        zpos1 and zpos2 are the middle of the first and second
  96        planes of station 1 (+1m for second station):
  97        zpos1=(zpos1m+zpos1p)/2=(15999+16071)/2=16035 mm, thick/2=40 mm
  98        zpos2=(zpos2m+zpos2p)/2=(16169+16241)/2=16205 mm, thick/2=40 mm
  99        zposxm and zposxp= middles of gaz gaps within a detection plane
 100        rem: the total thickness accounts for 1 mm of al on both
 101        side of the RPCs (see zpos1 and zpos2)
 102     */
 103
 104     Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
 105     Int_t idAir= idtmed[1100]; // medium 1
 106     Int_t idAlu1=idtmed[1103]; // medium 4
 107     Int_t detElemId=0;          // Detection Element Number
 108     Float_t tpar[3];
 109     Double_t dpar[3];
 110
 111 // vertical gap between right and left chambers (kDXZERO*2=4cm)
 112     const Float_t kDXZERO=2.;
 113 // main distances for chamber definition in first plane/first station
 114     const Float_t kXMIN=34.;
 115     const Float_t kXMED=51.;
 116     const Float_t kXMAX=255.;
 117 // 090704 kXMAX changed from 272 to 255.
 118 // (see fig.2-4 & 2-5 of Local Trigger Board PRR)
 119 // segmentation updated accordingly
 120     const Float_t kYMIN=34.;
 121     const Float_t kYMAX=51.;
 122 // inner/outer radius of flange between beam shield. and chambers (1/station)
 123 //    const Float_t kRMIN[2]={50.,50.};
 124 //    const Float_t kRMAX[2]={64.,68.};
 125 // z position of the middle of the gas gap in mother vol
 126     const Float_t kZm=-3.6;
 127     const Float_t kZp=+3.6;
 128
 129     Float_t zpos1= AliMUONConstants::DefaultChamberZ(10);
 130     Double_t dstation =  ( ( - AliMUONConstants::DefaultChamberZ(11)) -
 131                            ( - AliMUONConstants::DefaultChamberZ(10)) ) /2.1;
 132     Float_t par[3];
 133     par[2] = dstation;
 134
 135 // ratio of zpos1m/zpos1p and inverse for first plane
 136     Float_t zmp=(zpos1-3.6)/(zpos1+3.6);
 137     Float_t zpm=1./zmp;
 138
 139     Int_t icount=0;  // chamber counter (0 1 2 3)
 140
 141     for (Int_t istation=0; istation<2; istation++) { // loop on stations
 142         for (Int_t iplane=0; iplane<2; iplane++) { // loop on detection planes
 143
 144             Int_t iVolNum=1; // counter Volume Number
 145             icount = Int_t(iplane<<0)+Int_t(istation<<1);
 146
 147             par[0] = AliMUONConstants::Rmin(5+istation);
 148             par[1] = AliMUONConstants::Rmax(5+istation);
 149             Char_t volName[6];
 150             sprintf(volName,"%s%d", "SC",11+icount);
 151             gMC->Gsvolu(volName,"TUBE", idAir, par, 3);
 152             //SetVolume(10+icount, volName);
 153 //          Float_t zpos =  AliMUONConstants::DefaultChamberZ(10+icount);
 154
 155 /* removed 03/18/05
 156 // Flange between beam shielding and RPC
 157             tpar[0]= kRMIN[istation];
 158             tpar[1]= kRMAX[istation];
 159             tpar[2]= 4.0;
 160             char volFlange[5];
 161             sprintf(volFlange,"SF%dA",icount+1);
 162             gMC->Gsvolu(volFlange,"TUBE",idAlu1,tpar,3);     // Al
 163             // changed by ivana
 164             //gMC->Gspos(volFlange,1,"ALIC",0.,0.,zpos,0,"MANY");
 165             iChamber->GetGeometry()->GetEnvelopeStore()
 166               ->AddEnvelope(volFlange, 0, false, "MANY");
 167 */
 168
 169 // scaling factor
 170 //          Float_t zRatio = zpos / zpos1;
 171             Float_t zRatio = AliMUONConstants::DefaultRatioTriggerChamber(icount);
 172
 173
 174
 175
 176 // envelopes (same size except line 5, all virtual)
 177             char volEnv[18][5];
 178             tpar[1] = kYMIN * zRatio;
 179             tpar[2] = 0.4;
 180             Int_t i=0;    // counter
 181             for (Int_t icolumn=0; icolumn<2; icolumn++) {
 182                 for (Int_t iline=1; iline<10; iline++){
 183                     tpar[0] = (kXMAX/2.) * zRatio;
 184                     if (iline==5) tpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
 185                     if (icolumn==0)
 186                         sprintf(volEnv[i],"S%dR%d",icount,iline);
 187                     else
 188                         sprintf(volEnv[i],"S%dL%d",icount,iline);
 189                     // gMC->Gsvolu(volEnv[i],"BOX",idAir,tpar,0);
 190                     i++;
 191                 }
 192             }
 193
 194 // chamber prototype
 195             tpar[0]= 0.;
 196             tpar[1]= 0.;
 197             tpar[2]= 0.;            char volAlu[5];     // Alu
 198             char volBak[5];     // Bakelite
 199             char volGaz[5];     // Gas streamer
 200             sprintf(volAlu,"SC%dA",icount+1);
 201             sprintf(volBak,"SB%dA",icount+1);
 202             sprintf(volGaz,"S%dG",icount+11);
 203             gMC->Gsvolu(volAlu,"BOX",idAlu1,tpar,0);         // Al
 204             gMC->Gsvolu(volBak,"BOX",idtmed[1107],tpar,0);   // Bakelite
 205             gMC->Gsvolu(volGaz,"BOX",idtmed[1106],tpar,0);   // Gas streamer
 206             tpar[0] = -1.;
 207             tpar[1] = -1.;
 208             tpar[2] = 0.1;
 209             gMC->Gsposp(volGaz,1,volBak,0.,0.,0.,0,"ONLY",tpar,3);
 210             tpar[2] = 0.3;
 211             gMC->Gsposp(volBak,1,volAlu,0.,0.,0.,0,"ONLY",tpar,3);
 212
 213 // chamber type A
 214             Float_t xEnv = (kDXZERO+kXMED+(kXMAX-kXMED)/2.)*zRatio;
 215             Float_t yEnvM = 0.;  // y low position of envelope in chamber
 216             Float_t yEnvP = 0.;  // y up position of envelope in chamber
 217             Float_t yEnvPsave = 0.; // tmp data
 218             Float_t yEnvMsave = 0.; // tmp data
 219             Float_t xpos = 0.; // x position of RPC in envelope
 220             Float_t ypos = 0.; // y position of RPC in envelope
 221             dpar[2] = 0.4;
 222             dpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
 223             dpar[1] = kYMIN * zRatio;
 224
 225             detElemId = (10+icount+1)*100;
 226             GetEnvelopes(10+icount)->AddEnvelope(volEnv[4], detElemId, true, TGeoTranslation(xEnv,yEnvP,kZp));
 227             detElemId = (10+icount+1)*100+9;
 228             GetEnvelopes(10+icount)->AddEnvelope(volEnv[13], detElemId, true, TGeoTranslation(-xEnv,yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 229
 230             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[4],iVolNum++,3, dpar);
 231             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[13],iVolNum++,3, dpar);
 232
 233 // chamber type B (plus envelope chambers B & C)
 234             xEnv = (kDXZERO+kXMAX/2.)*zRatio;
 235             yEnvPsave = yEnvP;
 236             yEnvMsave = yEnvM;
 237             yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
 238             yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 239             dpar[0] = ((kXMAX-kXMIN)/2.) * zRatio;
 240             dpar[1] = ((kYMAX-kYMIN)/2.) * zRatio;
 241             xpos = kXMIN/2. * zRatio;
 242             ypos = (kYMIN - kYMIN/4.) * zRatio;
 243
 244             detElemId = (10+icount+1)*100+17;
 245             GetEnvelopes(10+icount)->AddEnvelope(volEnv[3], detElemId, true, TGeoTranslation( xEnv,-yEnvM,kZm));
 246             detElemId = (10+icount+1)*100+1;
 247             GetEnvelopes(10+icount)->AddEnvelope(volEnv[5], detElemId, true, TGeoTranslation( xEnv, yEnvM,kZm));
 248             detElemId = (10+icount+1)*100+10;
 249             GetEnvelopes(10+icount)->AddEnvelope(volEnv[12], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 250             detElemId = (10+icount+1)*100+8;
 251             GetEnvelopes(10+icount)->AddEnvelope(volEnv[14], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 252
 253             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
 254             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
 255             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
 256             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
 257
 258 // chamber type C (note: same Z than type B)
 259             dpar[0] = (kXMAX/2)*zRatio;
 260             dpar[1] = (kYMAX/2)*zRatio;
 261             xpos = 0.;
 262             ypos = ((kYMAX - kYMIN)/2.) * zRatio;
 263
 264             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
 265             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
 266             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
 267             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
 268
 269 // chamber type D, E and F (same size)
 270 // D
 271             yEnvPsave = yEnvP;
 272             yEnvMsave = yEnvM;
 273             yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
 274             yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 275             dpar[0] = (kXMAX/2.)*zRatio;
 276             dpar[1] =  kYMIN*zRatio;
 277
 278             detElemId = (10+icount+1)*100+16;
 279             GetEnvelopes(10+icount)->AddEnvelope(volEnv[2], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
 280             detElemId = (10+icount+1)*100+2;
 281             GetEnvelopes(10+icount)->AddEnvelope(volEnv[6], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
 282             detElemId = (10+icount+1)*100+11;
 283             GetEnvelopes(10+icount)->AddEnvelope(volEnv[11], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 284             detElemId = (10+icount+1)*100+7;
 285             GetEnvelopes(10+icount)->AddEnvelope(volEnv[15], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 286
 287             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[2],iVolNum++,3, dpar);
 288             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[6],iVolNum++,3, dpar);
 289             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[11],iVolNum++,3, dpar);
 290             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[15],iVolNum++,3, dpar);
 291
 292 // E
 293             yEnvPsave = yEnvP;
 294             yEnvMsave = yEnvM;
 295             yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
 296             yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 297
 298             detElemId = (10+icount+1)*100+15;
 299             GetEnvelopes(10+icount)->AddEnvelope(volEnv[1], detElemId, true, TGeoTranslation(xEnv,-yEnvM,kZm));
 300             detElemId = (10+icount+1)*100+3;
 301             GetEnvelopes(10+icount)->AddEnvelope(volEnv[7], detElemId, true, TGeoTranslation(xEnv, yEnvM,kZm));
 302             detElemId = (10+icount+1)*100+12;
 303             GetEnvelopes(10+icount)->AddEnvelope(volEnv[10], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 304             detElemId = (10+icount+1)*100+6;
 305             GetEnvelopes(10+icount)->AddEnvelope(volEnv[16], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 306
 307             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[1],iVolNum++,3,dpar);
 308             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[7],iVolNum++,3,dpar);
 309             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[10],iVolNum++,3,dpar);
 310             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[16],iVolNum++,3,dpar);
 311
 312
 313 // F
 314             yEnvPsave = yEnvP;
 315             yEnvMsave = yEnvM;
 316             yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
 317             yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 318
 319             detElemId = (10+icount+1)*100+14;
 320             GetEnvelopes(10+icount)->AddEnvelope(volEnv[0], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
 321             detElemId = (10+icount+1)*100+4;
 322             GetEnvelopes(10+icount)->AddEnvelope(volEnv[8], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
 323             detElemId = (10+icount+1)*100+13;
 324             GetEnvelopes(10+icount)->AddEnvelope(volEnv[9], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 325             detElemId = (10+icount+1)*100+5;
 326             GetEnvelopes(10+icount)->AddEnvelope(volEnv[17], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 327
 328             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[0],iVolNum++,3,dpar);
 329             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[8],iVolNum++,3,dpar);
 330             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[9],iVolNum++,3,dpar);
 331             GetEnvelopes(10+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[17],iVolNum++,3,dpar);
 332
 333         } // end loop on detection planes
 334     } // end loop on stations
 335 }
 336
 337 //______________________________________________________________________________
 338 void AliMUONTriggerGeometryBuilder::SetTransformations()
 339 {
 340 // Defines the transformations for the trigger chambers.
 341 // ---
 342
 343     if (gAlice->GetModule("SHIL")) {
 344       SetMotherVolume(10, "YOUT2");
 345       SetMotherVolume(11, "YOUT2");
 346       SetMotherVolume(12, "YOUT2");
 347       SetMotherVolume(13, "YOUT2");
 348     }
 349
 350     SetVolume(10, "SC11");
 351     SetVolume(11, "SC12");
 352     SetVolume(12, "SC13");
 353     SetVolume(13, "SC14");
 354
 355     Double_t zpos1= AliMUONConstants::DefaultChamberZ(10);
 356     SetTranslation(10, TGeoTranslation(0., 0., zpos1));
 357
 358     zpos1= AliMUONConstants::DefaultChamberZ(11);
 359     SetTranslation(11, TGeoTranslation(0., 0., zpos1));
 360
 361     zpos1= AliMUONConstants::DefaultChamberZ(12);
 362     SetTranslation(12, TGeoTranslation(0., 0., zpos1));
 363
 364     zpos1= AliMUONConstants::DefaultChamberZ(13);
 365     SetTranslation(13, TGeoTranslation(0., 0., zpos1));
 366 }
 367
 368 //______________________________________________________________________________
 369 void AliMUONTriggerGeometryBuilder::SetSensitiveVolumes()
 370 {
 371 // Defines the sensitive volumes for trigger station chambers.
 372 // ---
 373
 374   GetGeometry(10)->SetSensitiveVolume("S11G");
 375   GetGeometry(11)->SetSensitiveVolume("S12G");
 376   GetGeometry(12)->SetSensitiveVolume("S13G");
 377   GetGeometry(13)->SetSensitiveVolume("S14G");
 378 }
 379