]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - RICH/AliRICHv1.cxx
Added functions needed for SDD new SDigits/Digits (Add and fSigmaAfterElect).
[u/mrichter/AliRoot.git] / RICH / AliRICHv1.cxx
index c67da8994cfee00f9b09fb2f7c820e53dad303f6..baf07ba7022632a6fa5c9beb0a2a7bcbf2e99e80 100644 (file)
 
 /*
   $Log$
+  Revision 1.15  2001/08/30 09:51:23  hristov
+  The operator[] is replaced by At() or AddAt() in case of TObjArray.
+
+  Revision 1.14  2001/05/16 14:57:20  alibrary
+  New files for folders and Stack
+
+  Revision 1.13  2001/05/10 12:28:04  jbarbosa
+  Repositioned the RICH modules.
+
+  Revision 1.12  2001/02/23 17:26:12  jbarbosa
+  Setters for wire sag effect and voltage values.
+
+  Revision 1.11  2001/02/13 20:10:33  jbarbosa
+  Removed call to SetNSec() (obsolete). Fixed bug in chamber initialisation (not all chambers were initialised).
+
+  Revision 1.10  2000/12/20 14:08:02  jbarbosa
+  Removed dependencies on TGeant3 (thanks to F. Carminati and I. Hrivnacova)
+
+  Revision 1.9  2000/12/18 17:44:40  jbarbosa
+  Took two lines out of output.
+
+  Revision 1.8  2000/11/01 15:39:00  jbarbosa
+  Updated default geometry.
+
+  Revision 1.7  2000/10/03 21:44:09  morsch
+  Use AliSegmentation and AliHit abstract base classes.
+
+  Revision 1.6  2000/07/10 15:28:39  fca
+  Correction of the inheritance scheme
+
+  Revision 1.5  2000/06/30 16:38:51  dibari
+  Removed setters.
+
+  Revision 1.4  2000/06/13 13:13:40  jbarbosa
+  Correcting previous correction...
+
+  Revision 1.3  2000/06/13 13:06:38  jbarbosa
+  Fixed compiling error for HP (multiple declaration)
+
+  Revision 1.2  2000/06/12 15:36:16  jbarbosa
+  Cleaned up version.
+
+  Revision 1.1  2000/06/09 15:00:31  jbarbosa
+  New full version. All parameters configurable.
+
   Revision 1.9  2000/05/31 08:19:38  jbarbosa
   Fixed bug in StepManager
 
 #include <TTUBE.h>
 #include <TNode.h> 
 #include <TRandom.h> 
+#include <TParticle.h> 
 
 #include "AliRICHv1.h"
+#include "AliRICHHit.h"
+#include "AliSegmentation.h"
+#include "AliRICHResponse.h"
+#include "AliRICHSegmentationV1.h"
+#include "AliRICHResponseV0.h"
+#include "AliRICHGeometry.h"
 #include "AliRun.h"
 #include "AliMC.h"
 #include "iostream.h"
 #include "AliCallf77.h"
 #include "AliConst.h" 
 #include "AliPDG.h" 
-#include "TGeant3.h"
 
 ClassImp(AliRICHv1)
     
 //___________________________________________
-AliRICHv1::AliRICHv1() : AliRICHv0()
+AliRICHv1::AliRICHv1()
 {
+
+// Default constructor fo AliRICHvv1 (full version)
+
     //fChambers = 0;
 }
 
 //___________________________________________
 AliRICHv1::AliRICHv1(const char *name, const char *title)
-    : AliRICHv0(name,title)
+    : AliRICH(name,title)
 {
-    fCkov_number=0;
-    fFreon_prod=0;
 
-    fChambers = new TObjArray(7);
-    for (Int_t i=0; i<7; i++) {
-    
-       (*fChambers)[i] = new AliRICHChamber();  
-       
-    }
-}
+// Full version of RICH with hits and diagnostics
 
+  // Version 0
+// Default Segmentation, no hits
+    AliRICHSegmentationV1* segmentation = new AliRICHSegmentationV1;
+//
+//  Segmentation parameters
+    segmentation->SetPadSize(0.84,0.80);
+    segmentation->SetDAnod(0.84/2);
+//
+//  Geometry parameters
+    AliRICHGeometry* geometry = new AliRICHGeometry;
+    geometry->SetGapThickness(8);
+    geometry->SetProximityGapThickness(.4);
+    geometry->SetQuartzLength(133);
+    geometry->SetQuartzWidth(127.9);
+    geometry->SetQuartzThickness(.5);
+    geometry->SetOuterFreonLength(133);
+    geometry->SetOuterFreonWidth(41.3);
+    geometry->SetInnerFreonLength(133);
+    geometry->SetInnerFreonWidth(41.3);
+    geometry->SetFreonThickness(1.5);
+//
+//  Response parameters
+    AliRICHResponseV0*  response   = new AliRICHResponseV0;
+    response->SetSigmaIntegration(5.);
+    response->SetChargeSlope(27.);
+    response->SetChargeSpread(0.18, 0.18);
+    response->SetMaxAdc(4096);
+    response->SetAlphaFeedback(0.036);
+    response->SetEIonisation(26.e-9);
+    response->SetSqrtKx3(0.77459667);
+    response->SetKx2(0.962);
+    response->SetKx4(0.379);
+    response->SetSqrtKy3(0.77459667);
+    response->SetKy2(0.962);
+    response->SetKy4(0.379);
+    response->SetPitch(0.25);
+    response->SetWireSag(1);                     // 1->On, 0->Off
+    response->SetVoltage(2150);                  // Should only be 2000, 2050, 2100 or 2150
 
-//___________________________________________
-void AliRICHv1::StepManager()
-{
-    Int_t          copy, id;
-    static Int_t   idvol;
-    static Int_t   vol[2];
-    Int_t          ipart;
-    static Float_t hits[18];
-    static Float_t Ckov_data[19];
-    TLorentzVector Position;
-    TLorentzVector Momentum;
-    Float_t        pos[3];
-    Float_t        mom[4];
-    Float_t        Localpos[3];
-    Float_t        Localmom[4];
-    Float_t        Localtheta,Localphi;
-    Float_t        theta,phi;
-    Float_t        destep, step;
-    Float_t        ranf[2];
-    Int_t          NPads;
-    Float_t        coscerenkov;
-    static Float_t eloss, xhit, yhit, tlength;
-    const  Float_t big=1.e10;
-       
-    TClonesArray &lhits = *fHits;
-    TGeant3 *geant3 = (TGeant3*) gMC;
-    TParticle *current = (TParticle*)(*gAlice->Particles())[gAlice->CurrentTrack()];
-
- //if (current->Energy()>1)
-   //{
-        
-    // Only gas gap inside chamber
-    // Tag chambers and record hits when track enters 
-    
-    idvol=-1;
-    id=gMC->CurrentVolID(copy);
-    Float_t cherenkov_loss=0;
-    //gAlice->KeepTrack(gAlice->CurrentTrack());
+//
+//    AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH"); 
     
-    gMC->TrackPosition(Position);
-    pos[0]=Position(0);
-    pos[1]=Position(1);
-    pos[2]=Position(2);
-    Ckov_data[1] = pos[0];                 // X-position for hit
-    Ckov_data[2] = pos[1];                 // Y-position for hit
-    Ckov_data[3] = pos[2];                 // Z-position for hit
-    //Ckov_data[11] = gAlice->CurrentTrack();
-
-    //AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH"); 
+    fCkovNumber=0;
+    fFreonProd=0;
+    Int_t i=0;
     
-    /********************Store production parameters for Cerenkov photons************************/ 
-//is it a Cerenkov photon? 
-    if (gMC->TrackPid() == 50000050) {          
-
-      //if (gMC->VolId("GAP ")==gMC->CurrentVolID(copy))
-        //{                    
-         Float_t Ckov_energy = current->Energy();
-         //energy interval for tracking
-         if  (Ckov_energy > 5.6e-09 && Ckov_energy < 7.8e-09 )       
-           //if (Ckov_energy > 0)
-           {
-             if (gMC->IsTrackEntering()){                                     //is track entering?
-               if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
-                 {                                                          //is it in freo?
-                   if (geant3->Gctrak()->nstep<1){                          //is it the first step?
-                     Int_t mother = current->GetFirstMother(); 
-                     
-                     //printf("Second Mother:%d\n",current->GetSecondMother());
-                     
-                     Ckov_data[10] = mother;
-                     Ckov_data[11] = gAlice->CurrentTrack();
-                     Ckov_data[12] = 1;             //Media where photon was produced 1->Freon, 2->Quarz
-                     fCkov_number++;
-                     fFreon_prod=1;
-                     //printf("Index: %d\n",fCkov_number);
-                   }    //first step question
-                 }        //freo question
-               
-               if (geant3->Gctrak()->nstep<1){                                  //is it first step?
-                 if (gMC->VolId("QUAR")==gMC->CurrentVolID(copy))             //is it in quarz?
-                   {
-                     Ckov_data[12] = 2;
-                   }    //quarz question
-               }        //first step question
-               
-               //printf("Before %d\n",fFreon_prod);
-             }   //track entering question
-             
-             if (Ckov_data[12] == 1)                                        //was it produced in Freon?
-               //if (fFreon_prod == 1)
-               {
-                 if (gMC->IsTrackEntering()){                                     //is track entering?
-                   //printf("Got in");
-                   if (gMC->VolId("META")==gMC->CurrentVolID(copy))                //is it in gap?      
-                     {
-                       //printf("Got in\n");
-                       gMC->TrackMomentum(Momentum);
-                       mom[0]=Momentum(0);
-                       mom[1]=Momentum(1);
-                       mom[2]=Momentum(2);
-                       mom[3]=Momentum(3);
-                       // Z-position for hit
-                       
-                       
-                       /**************** Photons lost in second grid have to be calculated by hand************/ 
-                       
-                       Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
-                       Float_t t = (1. - .025 / cophi) * (1. - .05 /  cophi);
-                       gMC->Rndm(ranf, 1);
-                       //printf("grid calculation:%f\n",t);
-                       if (ranf[0] > t) {
-                         //geant3->StopTrack();
-                         Ckov_data[13] = 5;
-                         AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                         //printf("Lost one in grid\n");
-                       }
-                       /**********************************************************************************/
-                     }    //gap
-                   
-                   if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy))             //is it in csi?      
-                     {
-                       gMC->TrackMomentum(Momentum);
-                       mom[0]=Momentum(0);
-                       mom[1]=Momentum(1);
-                       mom[2]=Momentum(2);
-                       mom[3]=Momentum(3);
-                       
-                       /********* Photons lost by Fresnel reflection have to be calculated by hand********/ 
-                       /***********************Cerenkov phtons (always polarised)*************************/
-                       
-                       Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
-                       Float_t t = Fresnel(Ckov_energy*1e9,cophi,1);
-                       gMC->Rndm(ranf, 1);
-                       if (ranf[0] < t) {
-                         //geant3->StopTrack();
-                         Ckov_data[13] = 6;
-                         AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                         //printf("Lost by Fresnel\n");
-                       }
-                       /**********************************************************************************/
-                     }
-                 } //track entering?
-                 
-                 
-                 /********************Evaluation of losses************************/
-                 /******************still in the old fashion**********************/
-                 
-                 Int_t i1 = geant3->Gctrak()->nmec;            //number of physics mechanisms acting on the particle
-                 for (Int_t i = 0; i < i1; ++i) {
-                   //        Reflection loss 
-                   if (geant3->Gctrak()->lmec[i] == 106) {        //was it reflected
-                     Ckov_data[13]=10;
-                     if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) 
-                       Ckov_data[13]=1;
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR")) 
-                       Ckov_data[13]=2;
-                     //geant3->StopTrack();
-                     AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                   } //reflection question
-                   
-                   
-                   //        Absorption loss 
-                   else if (geant3->Gctrak()->lmec[i] == 101) {              //was it absorbed?
-                     Ckov_data[13]=20;
-                     if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy)) 
-                       Ckov_data[13]=11;
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR")) 
-                       Ckov_data[13]=12;
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("META")) 
-                       Ckov_data[13]=13;
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("GAP ")) 
-                       Ckov_data[13]=13;
-                     
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("SRIC")) 
-                       Ckov_data[13]=15;
-                     
-                     //        CsI inefficiency 
-                     if (gMC->CurrentVolID(copy) == gMC->VolId("CSI ")) {
-                       Ckov_data[13]=16;
-                     }
-                     //geant3->StopTrack();
-                     AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                     //printf("Added cerenkov %d\n",fCkov_number);
-                   } //absorption question 
-                   
-                   
-                   //        Photon goes out of tracking scope 
-                   else if (geant3->Gctrak()->lmec[i] == 30) {                 //is it below energy treshold?
-                     Ckov_data[13]=21;
-                     //geant3->StopTrack();
-                     AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                   }   // energy treshold question         
-                 }  //number of mechanisms cycle
-                 /**********************End of evaluation************************/
-               } //freon production question
-           } //energy interval question
-       //}//inside the proximity gap question
-    } //cerenkov photon question
+    fChambers = new TObjArray(kNCH);
+    for (i=0; i<kNCH; i++) {
+      
+      //PH      (*fChambers)[i] = new AliRICHChamber();  
+      fChambers->AddAt(new AliRICHChamber(), i);  
       
-    /**************************************End of Production Parameters Storing*********************/ 
-    
-    
-    /*******************************Treat photons that hit the CsI (Ckovs and Feedbacks)************/ 
-    
-    if (gMC->TrackPid() == 50000050 || gMC->TrackPid() == 50000051) {
-      //printf("Cerenkov\n");
-       if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy))
-       {
-           
-         if (gMC->Edep() > 0.){
-               gMC->TrackPosition(Position);
-               gMC->TrackMomentum(Momentum);
-               pos[0]=Position(0);
-               pos[1]=Position(1);
-               pos[2]=Position(2);
-               mom[0]=Momentum(0);
-               mom[1]=Momentum(1);
-               mom[2]=Momentum(2);
-               mom[3]=Momentum(3);
-               Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
-               Double_t rt = TMath::Sqrt(tc);
-               theta   = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
-               phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
-               gMC->Gmtod(pos,Localpos,1);                                                                    
-               gMC->Gmtod(mom,Localmom,2);
-               
-               gMC->CurrentVolOffID(2,copy);
-               vol[0]=copy;
-               idvol=vol[0]-1;
-
-               //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
-                       //->Sector(Localpos[0], Localpos[2]);
-               //printf("Sector:%d\n",sector);
-
-               /*if (gMC->TrackPid() == 50000051){
-                 fFeedbacks++;
-                 printf("Feedbacks:%d\n",fFeedbacks);
-               }*/     
-               
-               ((AliRICHChamber*) (*fChambers)[idvol])
-                   ->SigGenInit(Localpos[0], Localpos[2], Localpos[1]);
-               if(idvol<7) {   
-                   Ckov_data[0] = gMC->TrackPid();        // particle type
-                   Ckov_data[1] = pos[0];                 // X-position for hit
-                   Ckov_data[2] = pos[1];                 // Y-position for hit
-                   Ckov_data[3] = pos[2];                 // Z-position for hit
-                   Ckov_data[4] = theta;                      // theta angle of incidence
-                   Ckov_data[5] = phi;                      // phi angle of incidence 
-                   Ckov_data[8] = (Float_t) fNPadHits;      // first padhit
-                   Ckov_data[9] = -1;                       // last pad hit
-                   Ckov_data[13] = 4;                       // photon was detected
-                   Ckov_data[14] = mom[0];
-                   Ckov_data[15] = mom[1];
-                   Ckov_data[16] = mom[2];
-                   
-                   destep = gMC->Edep();
-                   gMC->SetMaxStep(big);
-                   cherenkov_loss  += destep;
-                   Ckov_data[7]=cherenkov_loss;
-                   
-                   NPads = MakePadHits(Localpos[0],Localpos[2],cherenkov_loss,idvol,cerenkov);
-                   if (fNPadHits > (Int_t)Ckov_data[8]) {
-                       Ckov_data[8]= Ckov_data[8]+1;
-                       Ckov_data[9]= (Float_t) fNPadHits;
-                   }
-
-                   Ckov_data[17] = NPads;
-                   //printf("Npads:%d",NPads);
-                   
-                   //TClonesArray *Hits = RICH->Hits();
-                   AliRICHHit *mipHit =  (AliRICHHit*) (fHits->UncheckedAt(0));
-                   if (mipHit)
-                     {
-                       mom[0] = current->Px();
-                       mom[1] = current->Py();
-                       mom[2] = current->Pz();
-                       Float_t Mip_px = mipHit->fMomX;
-                       Float_t Mip_py = mipHit->fMomY;
-                       Float_t Mip_pz = mipHit->fMomZ;
-                       
-                       Float_t r = mom[0]*mom[0] + mom[1]*mom[1] + mom[2]*mom[2];
-                       Float_t rt = TMath::Sqrt(r);
-                       Float_t Mip_r = Mip_px*Mip_px + Mip_py*Mip_py + Mip_pz*Mip_pz;  
-                       Float_t Mip_rt = TMath::Sqrt(Mip_r);
-                       if ((rt*Mip_rt) > 0)
-                         {
-                           coscerenkov = (mom[0]*Mip_px + mom[1]*Mip_py + mom[2]*Mip_pz)/(rt*Mip_rt);
-                         }
-                       else
-                         {
-                           coscerenkov = 0;
-                         }
-                       Float_t cherenkov = TMath::ACos(coscerenkov);
-                       Ckov_data[18]=cherenkov;
-                     }
-                   //if (sector != -1)
-                   //{
-                   AddHit(gAlice->CurrentTrack(),vol,Ckov_data);
-                   AddCerenkov(gAlice->CurrentTrack(),vol,Ckov_data);
-                   //}
-               }
-           }
-       }
     }
+  
+    for (i=0; i<kNCH; i++) {
+      SetGeometryModel(i,geometry);
+      SetSegmentationModel(i, segmentation);
+      SetResponseModel(i, response);
+      SetDebugLevel(0);
+    }
+
+
+}
+
+void AliRICHv1::Init()
+{
+
+  if(fDebug) {
+    printf("%s: *********************************** RICH_INIT ***********************************\n",ClassName());
+    printf("%s: *                                                                               *\n",ClassName());
+    printf("%s: *                        AliRICHv1 Full version started                         *\n",ClassName());
+    printf("%s: *                                                                               *\n",ClassName());
+  }
+
+  
+  AliSegmentation*  segmentation;
+  AliRICHGeometry*  geometry;
+  AliRICHResponse*  response;
+
+
+    // 
+    // Initialize Tracking Chambers
+    //
+    for (Int_t i=0; i<kNCH; i++) {
+       //printf ("i:%d",i);
+      //PH     ( (AliRICHChamber*) (*fChambers)[i])->Init(i);  
+       ( (AliRICHChamber*)fChambers->At(i))->Init(i);  
+    }  
     
-    /***********************************************End of photon hits*********************************************/
+    //
+    // Set the chamber (sensitive region) GEANT identifier
     
+    //PH    ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);  
+    //PH    ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);  
+    //PH    ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);  
+    //PH    ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);  
+    //PH    ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);  
+    //PH    ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);  
+    //PH    ((AliRICHChamber*)(*fChambers)[6])->SetGid(7); 
 
-    /**********************************************Charged particles treatment*************************************/
-
-    else if (gMC->TrackCharge())
-    //else if (1 == 1)
-      {
-//If MIP
-       /*if (gMC->IsTrackEntering())
-         {                
-           hits[13]=20;//is track entering?
-         }*/
-       if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
-         {
-           fFreon_prod=1;
-         }
-
-       if (gMC->VolId("GAP ")== gMC->CurrentVolID(copy)) {
-// Get current particle id (ipart), track position (pos)  and momentum (mom)
-           
-           gMC->CurrentVolOffID(3,copy);
-           vol[0]=copy;
-           idvol=vol[0]-1;
-
-           //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
-                       //->Sector(Localpos[0], Localpos[2]);
-           //printf("Sector:%d\n",sector);
-           
-           gMC->TrackPosition(Position);
-           gMC->TrackMomentum(Momentum);
-           pos[0]=Position(0);
-           pos[1]=Position(1);
-           pos[2]=Position(2);
-           mom[0]=Momentum(0);
-           mom[1]=Momentum(1);
-           mom[2]=Momentum(2);
-           mom[3]=Momentum(3);
-           gMC->Gmtod(pos,Localpos,1);                                                                    
-           gMC->Gmtod(mom,Localmom,2);
-           
-           ipart  = gMC->TrackPid();
-           //
-           // momentum loss and steplength in last step
-           destep = gMC->Edep();
-           step   = gMC->TrackStep();
-  
-           //
-           // record hits when track enters ...
-           if( gMC->IsTrackEntering()) {
-//             gMC->SetMaxStep(fMaxStepGas);
-               Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
-               Double_t rt = TMath::Sqrt(tc);
-               theta   = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
-               phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
-               
-
-               Double_t Localtc = Localmom[0]*Localmom[0]+Localmom[2]*Localmom[2];
-               Double_t Localrt = TMath::Sqrt(Localtc);
-               Localtheta   = Float_t(TMath::ATan2(Localrt,Double_t(Localmom[1])))*kRaddeg;                       
-               Localphi     = Float_t(TMath::ATan2(Double_t(Localmom[2]),Double_t(Localmom[0])))*kRaddeg;    
-               
-               hits[0] = Float_t(ipart);         // particle type
-               hits[1] = Localpos[0];                 // X-position for hit
-               hits[2] = Localpos[1];                 // Y-position for hit
-               hits[3] = Localpos[2];                 // Z-position for hit
-               hits[4] = Localtheta;                  // theta angle of incidence
-               hits[5] = Localphi;                    // phi angle of incidence 
-               hits[8] = (Float_t) fNPadHits;    // first padhit
-               hits[9] = -1;                     // last pad hit
-               hits[13] = fFreon_prod;           // did id hit the freon?
-               hits[14] = mom[0];
-               hits[15] = mom[1];
-               hits[16] = mom[2];
-
-               tlength = 0;
-               eloss   = 0;
-               fFreon_prod = 0;
-       
-               Chamber(idvol).LocaltoGlobal(Localpos,hits+1);
-          
-               
-               //To make chamber coordinates x-y had to pass LocalPos[0], LocalPos[2]
-               xhit    = Localpos[0];
-               yhit    = Localpos[2];
-               // Only if not trigger chamber
-               if(idvol<7) {
-                   //
-                   //  Initialize hit position (cursor) in the segmentation model 
-                   ((AliRICHChamber*) (*fChambers)[idvol])
-                       ->SigGenInit(Localpos[0], Localpos[2], Localpos[1]);
-               }
-           }
-           
-           // 
-           // Calculate the charge induced on a pad (disintegration) in case 
-           //
-           // Mip left chamber ...
-           if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
-               gMC->SetMaxStep(big);
-               eloss   += destep;
-               tlength += step;
-               
-                               
-               // Only if not trigger chamber
-               if(idvol<7) {
-                 if (eloss > 0) 
-                   {
-                     if(gMC->TrackPid() == kNeutron)
-                       printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
-                     NPads = MakePadHits(xhit,yhit,eloss,idvol,mip);
-                     hits[17] = NPads;
-                     //printf("Npads:%d",NPads);
-                   }
-               }
-               
-               hits[6]=tlength;
-               hits[7]=eloss;
-               if (fNPadHits > (Int_t)hits[8]) {
-                   hits[8]= hits[8]+1;
-                   hits[9]= (Float_t) fNPadHits;
-               }
-               
-               //if(sector !=-1)
-               new(lhits[fNhits++]) AliRICHHit(fIshunt,gAlice->CurrentTrack(),vol,hits);
-               eloss = 0; 
-               //
-               // Check additional signal generation conditions 
-               // defined by the segmentation
-               // model (boundary crossing conditions) 
-           } else if 
-               (((AliRICHChamber*) (*fChambers)[idvol])
-                ->SigGenCond(Localpos[0], Localpos[2], Localpos[1]))
-           {
-               ((AliRICHChamber*) (*fChambers)[idvol])
-                   ->SigGenInit(Localpos[0], Localpos[2], Localpos[1]);
-               if (eloss > 0) 
-                 {
-                   if(gMC->TrackPid() == kNeutron)
-                     printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
-                   NPads = MakePadHits(xhit,yhit,eloss,idvol,mip);
-                   hits[17] = NPads;
-                   //printf("Npads:%d",NPads);
-                 }
-               xhit     = Localpos[0];
-               yhit     = Localpos[2]; 
-               eloss    = destep;
-               tlength += step ;
-               //
-               // nothing special  happened, add up energy loss
-           } else {        
-               eloss   += destep;
-               tlength += step ;
-           }
-       }
-      }
-    /*************************************************End of MIP treatment**************************************/
-   //}
+    ((AliRICHChamber*)fChambers->At(0))->SetGid(1);  
+    ((AliRICHChamber*)fChambers->At(1))->SetGid(2);  
+    ((AliRICHChamber*)fChambers->At(2))->SetGid(3);  
+    ((AliRICHChamber*)fChambers->At(3))->SetGid(4);  
+    ((AliRICHChamber*)fChambers->At(4))->SetGid(5);  
+    ((AliRICHChamber*)fChambers->At(5))->SetGid(6);  
+    ((AliRICHChamber*)fChambers->At(6))->SetGid(7);  
+
+
+    segmentation=Chamber(0).GetSegmentationModel(0);
+    geometry=Chamber(0).GetGeometryModel();
+    response=Chamber(0).GetResponseModel();
+    
+    Float_t offset       = 490 + 1.276 - geometry->GetGapThickness()/2;        //distance from center of mother volume to methane
+    Float_t deltaphi     = 19.5;                                               //phi angle between center of chambers - z direction
+    Float_t deltatheta   = 20;                                                 //theta angle between center of chambers - x direction
+    Float_t cosphi       = TMath::Cos(deltaphi*TMath::Pi()/180);
+    Float_t sinphi       = TMath::Sin(deltaphi*TMath::Pi()/180);
+    Float_t costheta     = TMath::Cos(deltatheta*TMath::Pi()/180);
+    Float_t sintheta     = TMath::Sin(deltatheta*TMath::Pi()/180);
+
+    Float_t pos1[3]={0.                , offset*cosphi         , offset*sinphi};
+    Float_t pos2[3]={offset*sintheta   , offset*costheta       , 0. };
+    Float_t pos3[3]={0.                , offset                , 0.};
+    Float_t pos4[3]={-offset*sintheta  , offset*costheta       , 0.};
+    Float_t pos5[3]={offset*sinphi     , offset*costheta*cosphi, -offset*sinphi};
+    Float_t pos6[3]={0.                , offset*cosphi         , -offset*sinphi};
+    Float_t pos7[3]={ -offset*sinphi   , offset*costheta*cosphi, -offset*sinphi};
+
+    Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90., 0.               , 90. - deltaphi, 90.             , deltaphi, -90.           ));
+    Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90., -deltatheta      , 90.           , 90.- deltatheta , 0.      , 0.             ));
+    Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90., 0.               , 90.           , 90.             , 0.      , 0.             ));
+    Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2],new TRotMatrix("rot996","rot996",90.,  deltatheta      , 90.           , 90 + deltatheta , 0.      , 0.             ));
+    Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90., 360. - deltatheta, 108.2         , 90.- deltatheta ,18.2     , 90 - deltatheta));
+    Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90., 0.               , 90 + deltaphi , 90.             , deltaphi, 90.            ));
+    Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90., deltatheta       , 108.2         , 90.+ deltatheta ,18.2     , 90 + deltatheta));   
+     
+    if(fDebug) {
+      printf("%s: *                            Pads            : %3dx%3d                          *\n",
+            ClassName(),segmentation->Npx(),segmentation->Npy());
+      printf("%s: *                            Pad size        : %5.2f x%5.2f mm2                 *\n",
+            ClassName(),segmentation->Dpx(),segmentation->Dpy()); 
+      printf("%s: *                            Gap Thickness   : %5.1f cm                         *\n",
+            ClassName(),geometry->GetGapThickness());
+      printf("%s: *                            Radiator Width  : %5.1f cm                         *\n",
+            ClassName(),geometry->GetQuartzWidth());
+      printf("%s: *                            Radiator Length : %5.1f cm                         *\n",
+            ClassName(),geometry->GetQuartzLength());
+      printf("%s: *                            Freon Thickness : %5.1f cm                         *\n",
+            ClassName(),geometry->GetFreonThickness());
+      printf("%s: *                            Charge Slope    : %5.1f ADC                        *\n",
+            ClassName(),response->ChargeSlope());
+      printf("%s: *                            Feedback Prob.  : %5.2f %%                          *\n",
+            ClassName(),response->AlphaFeedback()*100);
+      printf("%s: *                            Debug Level     : %3d                              *\n",
+            ClassName(),GetDebugLevel());
+      printf("%s: *                                                                               *\n",
+            ClassName());
+      printf("%s: *********************************************************************************\n",
+            ClassName());
+    }
 }
+
+
+
+
+
+
+
+