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