]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - MUON/AliMUONTriggerGeometryBuilder.cxx
Updated list of MUON libraries
[u/mrichter/AliRoot.git] / MUON / AliMUONTriggerGeometryBuilder.cxx
index 676432d9fb75ea6608b752cb886b22e894c6cc2e..1d85c7517bf1d589422a6d3faf22b7c0af8c28dc 100644 (file)
  **************************************************************************/
 
 // $Id$
-//
+
+// -----------------------------------
 // Class AliMUONTriggerGeometryBuilder
 // -----------------------------------
-// MUON Trigger stations geometry construction class.
-//
-// Author: Philippe Crochette, LPC Clermont-Ferrand
+// MUON Trigger stations geometry 
+// construction class.
+// Author: Philippe Crochet (LPCCFd)
 
 #include <TVirtualMC.h>
 #include <TGeoMatrix.h>
 
+#include "AliLog.h"
+#include "AliRun.h"
+
 #include "AliMUONTriggerGeometryBuilder.h"
 #include "AliMUON.h"
-#include "AliMUONChamber.h"
-#include "AliMUONChamberGeometry.h"
+#include "AliMUONConstants.h"
+#include "AliMUONGeometryModule.h"
+#include "AliMUONGeometryEnvelopeStore.h"
 
+/// \cond CLASSIMP
 ClassImp(AliMUONTriggerGeometryBuilder)
+/// \endcond
 
 //______________________________________________________________________________
 AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(AliMUON* muon)
- : AliMUONVGeometryBuilder(&muon->Chamber(10), &muon->Chamber(11),&muon->Chamber(12),&muon->Chamber(13)),
+ : AliMUONVGeometryBuilder(16, 4),
    fMUON(muon)
 {
-// Standard constructor
+/// Standard constructor
 
 }
 
@@ -45,38 +52,13 @@ AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder()
  : AliMUONVGeometryBuilder(),
    fMUON(0)
 {
-// Default constructor
+/// Default constructor
 }
 
-
 //______________________________________________________________________________
-AliMUONTriggerGeometryBuilder::AliMUONTriggerGeometryBuilder(const AliMUONTriggerGeometryBuilder& rhs)
-  : AliMUONVGeometryBuilder(rhs)
+AliMUONTriggerGeometryBuilder::~AliMUONTriggerGeometryBuilder() 
 {
-// Protected copy constructor
-
-  Fatal("Copy constructor", 
-        "Copy constructor is not implemented.");
-}
-
-//______________________________________________________________________________
-AliMUONTriggerGeometryBuilder::~AliMUONTriggerGeometryBuilder() {
-//
-}
-
-//______________________________________________________________________________
-AliMUONTriggerGeometryBuilder& 
-AliMUONTriggerGeometryBuilder::operator = (const AliMUONTriggerGeometryBuilder& rhs) 
-{
-// Protected assignement operator
-
-  // check assignement to self
-  if (this == &rhs) return *this;
-
-  Fatal("operator=", 
-        "Assignment operator is not implemented.");
-    
-  return *this;  
+/// Destructor
 }
 
 //
@@ -86,7 +68,7 @@ AliMUONTriggerGeometryBuilder::operator = (const AliMUONTriggerGeometryBuilder&
 //______________________________________________________________________________
 void AliMUONTriggerGeometryBuilder::CreateGeometry()
 {
-// From AliMUONv1::CreateGeometry()
+/// From AliMUONv1::CreateGeometry()
 
     /* 
        zpos1 and zpos2 are the middle of the first and second
@@ -101,6 +83,7 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
     Int_t *idtmed = fMUON->GetIdtmed()->GetArray()-1099;
     Int_t idAir= idtmed[1100]; // medium 1
     Int_t idAlu1=idtmed[1103]; // medium 4
+    Int_t detElemId=0;          // Detection Element Number    
     Float_t tpar[3];
     Double_t dpar[3];    
     
@@ -109,22 +92,25 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
 // main distances for chamber definition in first plane/first station
     const Float_t kXMIN=34.;       
     const Float_t kXMED=51.;                                
-    const Float_t kXMAX=272.; 
-// kXMAX will become 255. in real life. segmentation to be updated accordingly
+    const Float_t kXMAX=255.; 
+// 090704 kXMAX changed from 272 to 255.
 // (see fig.2-4 & 2-5 of Local Trigger Board PRR)
+// segmentation updated accordingly
     const Float_t kYMIN=34.;                              
     const Float_t kYMAX=51.;                              
 // inner/outer radius of flange between beam shield. and chambers (1/station)
-    const Float_t kRMIN[2]={50.,50.};
-    const Float_t kRMAX[2]={64.,68.};
+//    const Float_t kRMIN[2]={50.,50.};
+//    const Float_t kRMAX[2]={64.,68.};
 // z position of the middle of the gas gap in mother vol 
     const Float_t kZm=-3.6;
-    const Float_t kZp=+3.6;     
-
-    AliMUONChamber *iChamber, *iChamber1;
-    iChamber1 = GetChamber(10);
-    Float_t zpos1=-iChamber1->Z(); 
+    const Float_t kZp=+3.6;
     
+    Float_t zpos1= AliMUONConstants::DefaultChamberZ(10); 
+    Double_t dstation =  ( ( - AliMUONConstants::DefaultChamberZ(11)) - 
+                           ( - AliMUONConstants::DefaultChamberZ(10)) ) /2.1;
+    Float_t par[3];
+    par[2] = dstation;
+
 // ratio of zpos1m/zpos1p and inverse for first plane
     Float_t zmp=(zpos1-3.6)/(zpos1+3.6);
     Float_t zpm=1./zmp;
@@ -135,12 +121,17 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
        for (Int_t iplane=0; iplane<2; iplane++) { // loop on detection planes
            
            Int_t iVolNum=1; // counter Volume Number
-           icount = Int_t(iplane*TMath::Power(2,0))+
-               Int_t(istation*TMath::Power(2,1));
-           
-           iChamber = GetChamber(10+icount);
-           Float_t zpos = - iChamber->Z();          
+           icount = Int_t(iplane<<0)+Int_t(istation<<1);
            
+           par[0] = AliMUONConstants::Rmin(5+istation); 
+           par[1] = AliMUONConstants::Rmax(5+istation);
+           Char_t volName[6];
+           sprintf(volName,"%s%d", "SC",11+icount);
+           gMC->Gsvolu(volName,"TUBE", idAir, par, 3);
+           //SetVolume(10+icount, volName);
+//         Float_t zpos =  AliMUONConstants::DefaultChamberZ(10+icount);
+
+/* removed 03/18/05
 // Flange between beam shielding and RPC 
            tpar[0]= kRMIN[istation];
            tpar[1]= kRMAX[istation];
@@ -150,11 +141,17 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            gMC->Gsvolu(volFlange,"TUBE",idAlu1,tpar,3);     // Al
             // changed by ivana
            //gMC->Gspos(volFlange,1,"ALIC",0.,0.,zpos,0,"MANY");
-           iChamber->GetGeometry()->AddEnvelope(volFlange, false, "MANY");
+           iChamber->GetGeometry()->GetEnvelopeStore()
+             ->AddEnvelope(volFlange, 0, false, "MANY");
+*/
            
 // scaling factor
-           Float_t zRatio = zpos / zpos1;
-           
+//         Float_t zRatio = zpos / zpos1;
+           Float_t zRatio = AliMUONConstants::DefaultRatioTriggerChamber(icount);                  
+
+
+
+    
 // envelopes (same size except line 5, all virtual)
            char volEnv[18][5];
            tpar[1] = kYMIN * zRatio; 
@@ -168,7 +165,7 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
                        sprintf(volEnv[i],"S%dR%d",icount,iline);
                    else
                        sprintf(volEnv[i],"S%dL%d",icount,iline);
-                   gMC->Gsvolu(volEnv[i],"BOX",idAir,tpar,0); 
+                   // gMC->Gsvolu(volEnv[i],"BOX",idAir,tpar,0); 
                    i++;
                }
            }
@@ -176,13 +173,12 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
 // chamber prototype
            tpar[0]= 0.;
            tpar[1]= 0.;
-           tpar[2]= 0.;            
-           char volAlu[5];     // Alu 
+           tpar[2]= 0.;            char volAlu[5];     // Alu 
            char volBak[5];     // Bakelite
            char volGaz[5];     // Gas streamer     
            sprintf(volAlu,"SC%dA",icount+1);
            sprintf(volBak,"SB%dA",icount+1);
-           sprintf(volGaz,"SG%dA",icount+1);
+           sprintf(volGaz,"S%dG",icount+11);
            gMC->Gsvolu(volAlu,"BOX",idAlu1,tpar,0);         // Al
            gMC->Gsvolu(volBak,"BOX",idtmed[1107],tpar,0);   // Bakelite
            gMC->Gsvolu(volGaz,"BOX",idtmed[1106],tpar,0);   // Gas streamer
@@ -205,11 +201,13 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            dpar[0] = ((kXMAX-kXMED)/2.)*zRatio;
            dpar[1] = kYMIN * zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[4], true, TGeoTranslation(xEnv,yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[13], true, TGeoTranslation(-xEnv,yEnvP,kZp));
+           detElemId = (10+icount+1)*100;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[4], detElemId, true, TGeoTranslation(xEnv,yEnvP,kZp));
+           detElemId = (10+icount+1)*100+9;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[13], detElemId, true, TGeoTranslation(-xEnv,yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[4],iVolNum++,3, dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[13],iVolNum++,3, dpar);         
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[4],iVolNum++,3, dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[13],iVolNum++,3, dpar);      
 
 // chamber type B (plus envelope chambers B & C)   
            xEnv = (kDXZERO+kXMAX/2.)*zRatio;
@@ -222,15 +220,19 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            xpos = kXMIN/2. * zRatio;
            ypos = (kYMIN - kYMIN/4.) * zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[3], true, TGeoTranslation( xEnv,-yEnvP,kZp));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[5], true, TGeoTranslation( xEnv, yEnvP,kZp));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[12], true, TGeoTranslation(-xEnv,-yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[14], true, TGeoTranslation(-xEnv, yEnvM,kZm));
+           detElemId = (10+icount+1)*100+17;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[3], detElemId, true, TGeoTranslation( xEnv,-yEnvM,kZm));            
+           detElemId = (10+icount+1)*100+1;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[5], detElemId, true, TGeoTranslation( xEnv, yEnvM,kZm));
+           detElemId = (10+icount+1)*100+10;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[12], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
+           detElemId = (10+icount+1)*100+8;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[14], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(-xpos, ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(-xpos,-ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
 
 // chamber type C (note: same Z than type B)
            dpar[0] = (kXMAX/2)*zRatio;
@@ -238,11 +240,11 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            xpos = 0.;      
            ypos = ((kYMAX - kYMIN)/2.) * zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(-xpos,-ypos,0.),3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(-xpos, ypos,0.),3,dpar);
-    
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[3],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[5],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[12],iVolNum++,TGeoTranslation(xpos,-ypos,0.),3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[14],iVolNum++,TGeoTranslation(xpos, ypos,0.),3,dpar);
+
 // chamber type D, E and F (same size)
 // D       
            yEnvPsave = yEnvP;
@@ -252,15 +254,19 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            dpar[0] = (kXMAX/2.)*zRatio;
            dpar[1] =  kYMIN*zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[2], true, TGeoTranslation(xEnv,-yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[6], true, TGeoTranslation(xEnv, yEnvM,kZm));
-            GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[11], true, TGeoTranslation(-xEnv,-yEnvP,kZp));
-            GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[15], true, TGeoTranslation(-xEnv, yEnvP,kZp));
+           detElemId = (10+icount+1)*100+16;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[2], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
+           detElemId = (10+icount+1)*100+2;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[6], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
+           detElemId = (10+icount+1)*100+11;
+            GetEnvelopes(16+icount)->AddEnvelope(volEnv[11], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
+           detElemId = (10+icount+1)*100+7;
+            GetEnvelopes(16+icount)->AddEnvelope(volEnv[15], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[2],iVolNum++,3, dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[6],iVolNum++,3, dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[11],iVolNum++,3, dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[15],iVolNum++,3, dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[2],iVolNum++,3, dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[6],iVolNum++,3, dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[11],iVolNum++,3, dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[15],iVolNum++,3, dpar);
 
 // E
            yEnvPsave = yEnvP;
@@ -268,15 +274,19 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
            yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[1], true, TGeoTranslation(xEnv,-yEnvP,kZp));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[7], true, TGeoTranslation(xEnv, yEnvP,kZp));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[10], true, TGeoTranslation(-xEnv,-yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[16], true, TGeoTranslation(-xEnv, yEnvM,kZm));
+           detElemId = (10+icount+1)*100+15;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[1], detElemId, true, TGeoTranslation(xEnv,-yEnvM,kZm));
+           detElemId = (10+icount+1)*100+3;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[7], detElemId, true, TGeoTranslation(xEnv, yEnvM,kZm));
+           detElemId = (10+icount+1)*100+12;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[10], detElemId, true, TGeoTranslation(-xEnv,-yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
+           detElemId = (10+icount+1)*100+6;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[16], detElemId, true, TGeoTranslation(-xEnv, yEnvP,kZp),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[1],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[7],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[10],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[16],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[1],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[7],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[10],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[16],iVolNum++,3,dpar);
 
 
 // F
@@ -285,15 +295,19 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
            yEnvP = (yEnvMsave + kYMIN * zRatio ) * zpm + kYMIN * zRatio;
            yEnvM = (yEnvPsave + kYMIN * zRatio ) * zmp + kYMIN * zRatio;
 
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[0], true, TGeoTranslation(xEnv,-yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[8], true, TGeoTranslation(xEnv, yEnvM,kZm));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[9], true, TGeoTranslation(-xEnv,-yEnvP,kZp));
-           GetChamber(10+icount)->GetGeometry()->AddEnvelope(volEnv[17], true, TGeoTranslation(-xEnv, yEnvP,kZp));
+           detElemId = (10+icount+1)*100+14;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[0], detElemId, true, TGeoTranslation(xEnv,-yEnvP,kZp));
+           detElemId = (10+icount+1)*100+4;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[8], detElemId, true, TGeoTranslation(xEnv, yEnvP,kZp));
+           detElemId = (10+icount+1)*100+13;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[9], detElemId, true, TGeoTranslation(-xEnv,-yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
+           detElemId = (10+icount+1)*100+5;
+           GetEnvelopes(16+icount)->AddEnvelope(volEnv[17], detElemId, true, TGeoTranslation(-xEnv, yEnvM,kZm),TGeoRotation("rot1",90.,180.,90.,90.,180.,0.));
            
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[0],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[8],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[9],iVolNum++,3,dpar);
-           GetChamber(10+icount)->GetGeometry()->AddEnvelopeConstituentParam(volAlu,volEnv[17],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[0],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[8],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[9],iVolNum++,3,dpar);
+           GetEnvelopes(16+icount)->AddEnvelopeConstituentParam(volAlu,volEnv[17],iVolNum++,3,dpar);
 
        } // end loop on detection planes
     } // end loop on stations    
@@ -302,41 +316,41 @@ void AliMUONTriggerGeometryBuilder::CreateGeometry()
 //______________________________________________________________________________
 void AliMUONTriggerGeometryBuilder::SetTransformations() 
 {
-// Defines the transformations for the trigger chambers.
-// ---
-    Double_t zpos1, zpos2;    
-    AliMUONChamber *iChamber1, *iChamber2;
-
-    iChamber1 = GetChamber(10);
-    zpos1= - iChamber1->Z(); 
-    iChamber1->GetGeometry()
-       ->SetTranslation(TGeoTranslation(0., 0., zpos1));
+/// Defines the transformations for the trigger chambers.
+
+    if (gAlice->GetModule("SHIL")) {
+      SetMotherVolume(16, "YOUT2");
+      SetMotherVolume(17, "YOUT2");
+      SetMotherVolume(18, "YOUT2");
+      SetMotherVolume(19, "YOUT2");
+    }  
+
+    SetVolume(16, "SC11");
+    SetVolume(17, "SC12");
+    SetVolume(18, "SC13");
+    SetVolume(19, "SC14");
+
+    Double_t zpos1= AliMUONConstants::DefaultChamberZ(10); 
+    SetTranslation(16, TGeoTranslation(0., 0., zpos1));
     
-    iChamber2 = GetChamber(11);
-    zpos2 = - iChamber2->Z(); 
-    iChamber2->GetGeometry()
-       ->SetTranslation(TGeoTranslation(0., 0., zpos2));
-
-    iChamber1 = GetChamber(12);
-    zpos1 = - iChamber1->Z(); 
-    iChamber1->GetGeometry()
-       ->SetTranslation(TGeoTranslation(0., 0., zpos1));
-    
-    iChamber2 = GetChamber(13);
-    zpos2 = - iChamber2->Z(); 
-    iChamber2->GetGeometry()
-       ->SetTranslation(TGeoTranslation(0., 0., zpos2));
+    zpos1= AliMUONConstants::DefaultChamberZ(11); 
+    SetTranslation(17, TGeoTranslation(0., 0., zpos1));
+
+    zpos1= AliMUONConstants::DefaultChamberZ(12); 
+    SetTranslation(18, TGeoTranslation(0., 0., zpos1));
+
+    zpos1= AliMUONConstants::DefaultChamberZ(13); 
+    SetTranslation(19, TGeoTranslation(0., 0., zpos1));
 }
 
 //______________________________________________________________________________
 void AliMUONTriggerGeometryBuilder::SetSensitiveVolumes()
 {
-// Defines the sensitive volumes for trigger station chambers.
-// ---
+/// Defines the sensitive volumes for trigger station chambers.
 
-  GetChamber(10)->GetGeometry()->SetSensitiveVolume("SG1A");
-  GetChamber(11)->GetGeometry()->SetSensitiveVolume("SG2A");
-  GetChamber(12)->GetGeometry()->SetSensitiveVolume("SG3A");
-  GetChamber(13)->GetGeometry()->SetSensitiveVolume("SG4A");
+  GetGeometry(16)->SetSensitiveVolume("S11G");
+  GetGeometry(17)->SetSensitiveVolume("S12G");
+  GetGeometry(18)->SetSensitiveVolume("S13G");
+  GetGeometry(19)->SetSensitiveVolume("S14G");
 }