RICH/AliRICH.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   *
   8 //  * documentation strictly for non-commercial purposes is hereby granted   *
   9 //  * without fee, provided that the above copyright notice appears in all   *
  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 #include "AliRICH.h"
  17 #include "AliRICHParam.h"
  18 #include "AliRICHChamber.h"
  19 #include "AliRICHTracker.h"
  20 #include "AliRICHHelix.h"
  21 //#include <TArrayF.h>
  22 #include <TGeometry.h>
  23 #include <TBRIK.h>
  24 #include <TTUBE.h>
  25 #include <TFile.h>
  26 #include <TNode.h>
  27 #include <TObjArray.h>
  28 #include <TParticle.h>
  29 #include <AliStack.h>
  30 #include <AliMagF.h>
  31 #include <AliRun.h>
  32 #include <AliRunDigitizer.h>
  33 #include <AliMC.h>
  34 #include <AliESD.h>
  35 #include <TVirtualMC.h>
  36 #include <TH1F.h>
  37 #include <TH2F.h>
  38 #include <TBenchmark.h>
  39 #include <AliLog.h>
  40 #include <TNtupleD.h>
  41 #include <AliTracker.h>
  42 #include <AliRawDataHeader.h>
  43 #include <TLatex.h> //Display()
  44 #include <TCanvas.h> //Display()
  45 #include <TGraph.h> //Display()
  46
  47 ClassImp(AliRICH)
  48 //__________________________________________________________________________________________________
  49 // RICH manager class
  50 //BEGIN_HTML
  51 /*
  52   <img src="gif/alirich.gif">
  53 */
  54 //END_HTML
  55 //__________________________________________________________________________________________________
  56 AliRICH::AliRICH():AliDetector(),fParam(0),  fSdigits(0),fNsdigits(0),fDigs(0),fClus(0)
  57 {
  58 //Default ctor should not contain any new operators
  59 //AliDetector ctor deals with Hits and Digits
  60   for(int i=0;i<kNchambers;i++) fNdigs[i]  =0;
  61   for(int i=0;i<kNchambers;i++) fNclus[i]=0;
  62 //  fCounters.ResizeTo(20); fCounters.Zero();
  63 }//AliRICH::AliRICH()
  64 //__________________________________________________________________________________________________
  65 AliRICH::AliRICH(const char *name, const char *title)
  66         :AliDetector(name,title),fParam(new AliRICHParam),fSdigits(0),fNsdigits(0),fDigs(0),fClus(0)
  67 {
  68 //Named ctor
  69   AliDebug(1,"Start.");
  70 //AliDetector ctor deals with Hits and Digits (reset them to 0, does not create them)
  71   HitsCreate();          gAlice->GetMCApp()->AddHitList(fHits);
  72   fCounters.ResizeTo(20); fCounters.Zero();
  73   AliDebug(1,"Stop.");
  74 }//AliRICH::AliRICH(const char *name, const char *title)
  75 //__________________________________________________________________________________________________
  76 AliRICH::~AliRICH()
  77 {
  78 //dtor
  79   AliDebug(1,"Start.");
  80
  81   if(fParam)     delete fParam;
  82
  83   if(fHits)      delete fHits;
  84   if(fSdigits)   delete fSdigits;
  85   if(fDigits)    delete fDigits;
  86   if(fDigs)      {fDigs->Delete();   delete fDigs;}
  87   if(fClus)      {fClus->Delete();   delete fClus;}
  88   AliDebug(1,"Stop.");
  89 }//AliRICH::~AliRICH()
  90 //__________________________________________________________________________________________________
  91 void AliRICH::Hits2SDigits()
  92 {
  93 // Create a list of sdigits corresponding to list of hits. Every hit generates one or more sdigits.
  94   AliDebug(1,"Start.");
  95   for(Int_t iEventN=0;iEventN<GetLoader()->GetRunLoader()->GetAliRun()->GetEventsPerRun();iEventN++){//events loop
  96     GetLoader()->GetRunLoader()->GetEvent(iEventN);//get next event
  97
  98     if(!GetLoader()->TreeH()) GetLoader()->LoadHits();    GetLoader()->GetRunLoader()->LoadHeader();
  99     if(!GetLoader()->GetRunLoader()->TreeK())             GetLoader()->GetRunLoader()->LoadKinematics();//from
 100     if(!GetLoader()->TreeS()) GetLoader()->MakeTree("S"); MakeBranch("S");//to
 101
 102     for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
 103       GetLoader()->TreeH()->GetEntry(iPrimN);
 104       for(Int_t iHitN=0;iHitN<Hits()->GetEntries();iHitN++){//hits loop
 105         AliRICHHit *pHit=(AliRICHHit*)Hits()->At(iHitN);//get current hit
 106         TVector2 x2 = C(pHit->C())->Mrs2Anod(0.5*(pHit->InX3()+pHit->OutX3()));//hit position in the anod plane
 107         Int_t iTotQdc=P()->TotQdc(x2,pHit->Eloss());//total charge produced by hit, 0 if hit in dead zone
 108         if(iTotQdc==0) continue;
 109         //
 110         //need to quantize the anod....
 111         TVector padHit=AliRICHParam::Loc2Pad(x2);
 112         TVector2 padHitXY=AliRICHParam::Pad2Loc(padHit);
 113         TVector2 anod;
 114         if((x2.Y()-padHitXY.Y())>0) anod.Set(x2.X(),padHitXY.Y()+AliRICHParam::PitchAnod()/2);
 115         else anod.Set(x2.X(),padHitXY.Y()-AliRICHParam::PitchAnod()/2);
 116         //end to quantize anod
 117         //
 118         TVector area=P()->Loc2Area(anod);//determine affected pads, dead zones analysed inside
 119         AliDebug(1,Form("hitanod(%6.2f,%6.2f)->area(%3.0f,%3.0f)-(%3.0f,%3.0f) QDC=%4i",anod.X(),anod.Y(),area[0],area[1],area[2],area[3],iTotQdc));
 120         TVector pad(2);
 121         for(pad[1]=area[1];pad[1]<=area[3];pad[1]++)//affected pads loop
 122           for(pad[0]=area[0];pad[0]<=area[2];pad[0]++){
 123             Double_t padQdc=iTotQdc*P()->FracQdc(anod,pad);
 124             AliDebug(1,Form("current pad(%3.0f,%3.0f) with QDC  =%6.2f",pad[0],pad[1],padQdc));
 125             if(padQdc>0.1) SDigitAdd(pHit->C(),pad,padQdc,GetLoader()->GetRunLoader()->Stack()->Particle(pHit->GetTrack())->GetPdgCode(),pHit->GetTrack());
 126           }//affected pads loop
 127       }//hits loop
 128     }//prims loop
 129     GetLoader()->TreeS()->Fill();
 130     GetLoader()->WriteSDigits("OVERWRITE");
 131     SDigitsReset();
 132   }//events loop
 133   GetLoader()->UnloadHits(); GetLoader()->GetRunLoader()->UnloadHeader(); GetLoader()->GetRunLoader()->UnloadKinematics();
 134   GetLoader()->UnloadSDigits();
 135   AliDebug(1,"Stop.");
 136 }//Hits2SDigits()
 137 //__________________________________________________________________________________________________
 138 void AliRICH::Digits2Raw()
 139 {
 140 //Loops over all digits and creates raw data files in DDL format. GetEvent() is done outside (AliSimulation)
 141 //RICH has 2 DDL per chamber, even number for right part(2-4-6) odd number for left part(1-3-5)
 142 //RICH has no any propriate header just uses the common one
 143 //Each PC is divided by 8 rows counted from 1 to 8 from top to bottom for left PCs(1-3-5) and from bottom to top for right PCc(2-4-6)     (denoted  rrrrr 5 bits 32 values)
 144 //Each raw is composed from 10 DILOGIC chips counted from left to right from 1 to 10                                                      (denoted   dddd 4 bits 16 values)
 145 //Each DILOGIC chip serves 48 channels counted from 0 to 47                                                                               (denoted aaaaaa 6 bits 64 values)
 146 //So RICH info word is  32 bits word with structure:   0000 0rrr rrdd ddaa aaaa qqqq qqqq qqqq (five 0 five r six a twelve q) with QDC    (denoted q...q 12 bits 4096 values)
 147   AliDebug(1,"Start.");
 148   GetLoader()->LoadDigits();
 149   GetLoader()->TreeD()->GetEntry(0);
 150
 151   Int_t kRichOffset=0x700; //currently one DDL per 3 sectors
 152
 153   ofstream file135,file246;//output streams 2 DDL per chamber
 154   AliRawDataHeader header;//empty DDL miniheader
 155   UInt_t word32=1;        //32 bits data word
 156
 157   for(Int_t iChN=1;iChN<=kNchambers;iChN++){ //2 DDL per chamber open both in parallel
 158     file135.open(Form("RICH_%4i.ddl",kRichOffset+2*iChN-1));   //left part of chamber; sectors 1-3-5 odd DDL number
 159     file246.open(Form("RICH_%4i.ddl",kRichOffset+2*iChN));     //right part of chamber; sectors 2-4-6 even DDL number
 160 //common DDL header defined by standart, now dummy as the total number of bytes is not yet known
 161     file135.write((char*)&header,sizeof(header)); //dummy header just place holder
 162     file246.write((char*)&header,sizeof(header)); //actual will be written later
 163
 164     Int_t counter135=0,counter246=0;//counts total number of records per DDL
 165
 166     for(Int_t iDigN=0;iDigN<Digits(iChN)->GetEntriesFast();iDigN++){//digits loop for a given chamber
 167       AliRICHDigit *pDig=(AliRICHDigit*)Digits(iChN)->At(iDigN);
 168       word32=UInt_t (pDig->Q()+0x400*pDig->X()+0x4000*pDig->Y());  //arbitrary structure
 169       switch(pDig->S()){//readout by vertical sectors: 1,3,5-left DDL 2,4,6-right DDL
 170         case 1: case 3: case 5: file135.write((char*)&word32,sizeof(word32)); counter135++; break;
 171         case 2: case 4: case 6: file246.write((char*)&word32,sizeof(word32)); counter246++; break;
 172       }//switch sector
 173     }//digits loop for a given chamber
 174 //now count total byte number for each DDL file and rewrite actual header
 175     header.fSize=sizeof(header)+counter135*sizeof(word32);   header.SetAttribute(0); file135.seekp(0); file135.write((char*)&header,sizeof(header));
 176     header.fSize=sizeof(header)+counter246*sizeof(word32);   header.SetAttribute(0); file246.seekp(0); file246.write((char*)&header,sizeof(header));
 177     file135.close(); file246.close();
 178   }//chambers loop
 179   GetLoader()->UnloadDigits();
 180   AliDebug(1,"Stop.");
 181 }//Digits2Raw()
 182 //__________________________________________________________________________________________________
 183 void AliRICH::BuildGeometry()
 184 {
 185 //Builds a TNode geometry for event display
 186   AliInfo("Start.");
 187
 188   TNode *node, *subnode, *top;
 189   top=gAlice->GetGeometry()->GetNode("alice");
 190
 191   Float_t widx =P()->SectorSizeX();
 192   Float_t leny =P()->SectorSizeY();
 193   Float_t dz   =P()->Zfreon()+P()->Zwin()+P()->Pc2Win();
 194   Float_t dead =P()->DeadZone();
 195
 196   new TBRIK("RICH","RICH","void",widx+dead/2,leny+leny/2+dead,dz+0.1); //RICH chamber
 197   new TBRIK("RPC" ,"RPC" ,"void",widx/2,leny/2,0.01);                  //RICH sector
 198
 199   for(int i=1;i<=P()->Nchambers();i++){
 200     top->cd();
 201     node = new TNode(Form("RICH%i",i),Form("RICH%i",i),"RICH",C(i)->Center().X(),C(i)->Center().Y(),C(i)->Center().Z(),C(i)->RotMatrixName());
 202     node->SetLineColor(kRed);
 203     node->cd();
 204     subnode = new TNode("PHOTO1","PHOTO1","RPC",-widx/2-dead/2,-leny-dead/2,dz,"");
 205     subnode->SetLineColor(kGreen);
 206     fNodes->Add(subnode);
 207     subnode = new TNode("PHOTO1","PHOTO1","RPC", widx/2+dead/2,-leny-dead/2,dz,"");
 208     subnode->SetLineColor(kGreen);
 209     fNodes->Add(subnode);
 210     subnode = new TNode("PHOTO1","PHOTO1","RPC",-widx/2-dead/2,           0,dz,"");
 211     subnode->SetLineColor(kGreen);
 212     fNodes->Add(subnode);
 213     subnode = new TNode("PHOTO1","PHOTO1","RPC", widx/2+dead/2,           0,dz,"");
 214     subnode->SetLineColor(kGreen);
 215     fNodes->Add(subnode);
 216     subnode = new TNode("PHOTO1","PHOTO1","RPC",-widx/2-dead/2, leny+dead/2,dz,"");
 217     subnode->SetLineColor(kGreen);
 218     fNodes->Add(subnode);
 219     subnode = new TNode("PHOTO1","PHOTO1","RPC", widx/2+dead/2, leny+dead/2,dz,"");
 220     subnode->SetLineColor(kGreen);
 221     fNodes->Add(subnode);
 222     fNodes->Add(node);
 223   }
 224
 225   AliDebug(1,"Stop.");
 226 }//void AliRICH::BuildGeometry()
 227 //__________________________________________________________________________________________________
 228 void AliRICH::CreateMaterials()
 229 {
 230 // Definition of available RICH materials
 231
 232   Int_t   material=0; //tmp material id number
 233   Float_t a=0,z=0,den=0,radl=0,absl=0; //tmp material parameters
 234
 235   Float_t tmaxfd=-10.0, deemax=-0.2, stemax=-0.1,epsil=0.001, stmin=-0.001;
 236   Int_t   isxfld = gAlice->Field()->Integ();
 237   Float_t sxmgmx = gAlice->Field()->Max();
 238
 239   Float_t aAir[4]={12,14,16,36};  Float_t zAir[4]={6,7,8,18}; Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};//total 0.9999999
 240   AliMixture(++material, "RichAir",aAir,zAir,den=0.00120479,4,wAir);                                          //1 (Air) 0.01% C 75% N  23% O 1% Ar
 241   AliMedium(kAir, "RichAir",material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 242
 243   AliMixture(++material, "RichAerogel",aAir,zAir,den=P()->DenGel(),4,wAir);                     //Aerogel represented by Air
 244   AliMedium(kGel, "RichAerogel",material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 245
 246   AliMixture(++material, "RichAerogelReflector",aAir,zAir,den=P()->DenGel(),4,wAir);           //Aerogel reflector represented by Air
 247   AliMedium(kReflector, "RichAerogelReflector",material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 248
 249   AliMaterial(++material, "RichRohacell", a=12.01,z=6.0, den=0.1,     radl=18.8,   absl=0);                   //2 Rohacell 51 C-equiv radl rad cover
 250   AliMedium(kRoha, "RichRohacell", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 251
 252   Float_t  aQuartz[2]={28.09,16.0};  Float_t  zQuartz[2]={14.00, 8.0};  Float_t  wQuartz[2]={1,2};
 253   AliMixture(++material, "RichSiO2",aQuartz,zQuartz,den=2.64,-2, wQuartz);                                    //3 Quarz (SiO2) -trasparent rad window
 254   AliMedium(kSiO2, "RichSiO2",material, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 255
 256   Float_t  aFreon[2]={12,19};  Float_t  zFreon[2]={6,9};  Float_t wmatFreon[2]={6,14};                        // C12-6 F19-9
 257   AliMixture(++material, "RichC6F14",aFreon,zFreon,den=1.68,-2,wmatFreon);                                    //4 Freon (C6F14)
 258   AliMedium(kC6F14, "RichC6F14",material, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 259
 260   Float_t aMethane[2]={12.01,1}; Float_t zMethane[2]={6,1}; Float_t wMethane[2]={1,4};
 261   AliMixture (++material, "RichCH4", aMethane, zMethane, den=7.17e-4,-2, wMethane);                        //5,9 methane (CH4) normal and for Gap
 262   AliMedium(kCH4, "RichCH4"   , material, 1, isxfld, sxmgmx, tmaxfd, stemax,  deemax, epsil,  stmin);
 263   AliMixture (++material, "RichCH4gap", aMethane, zMethane, den=7.17e-4,-2, wMethane);                      //5,9 methane (CH4) normal and for Gap
 264   AliMedium(kGap, "RichCH4gap", material, 1, isxfld, sxmgmx, tmaxfd, 0.1   , -deemax, epsil, -stmin);
 265
 266   AliMaterial(++material, "RichCsI",      a=12.01,z=6.0, den=0.1,     radl=18.8,   absl=0);                   //6 CsI-radl equivalent
 267   AliMedium(kCsI, "RichCsI", material, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
 268
 269   AliMaterial(++material, "RichGridCu",    a=63.54,z=29.0,den=8.96,    radl=1.43,   absl=0);                   //7 anode grid (Cu)
 270   AliMedium(kGridCu, "RichGridCu", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 271
 272   AliMaterial(++material, "RichPcbCu",     a=63.54,z=29.0,den=8.96,    radl=1.4,    absl=0);                   //12 Cu
 273   AliMedium(kCu, "RichPcbCu", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 274
 275   AliMixture (++material, "RichOpSiO2",aQuartz, zQuartz, den=2.64, -2, wQuartz);                             //8 Quarz (SiO2) - opaque
 276   AliMedium(kOpSiO2, "RichOpSiO2",material, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 277
 278   AliMaterial(++material, "RichAl",     a=26.98,z=13.0,den=2.699,     radl=8.9,    absl=0);                 //10 aluminium sheet (Al)
 279   AliMedium(kAl, "RichAl", material, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 280
 281   Float_t aGlass[5]={12.01,28.09,16,10.8,23}; Float_t zGlass[5]={6,14,8,5,11};  Float_t wGlass[5]={0.5,0.105,0.355,0.03,0.01};
 282   AliMixture(++material,"RichGlass",aGlass, zGlass, den=1.74, 5, wGlass);                                    //11 Glass 50%-C 10.5%-Si 35.5%-O 3%-B 1%-Na
 283   AliMedium(kGlass, "RichGlass", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 284
 285   AliMaterial(++material, "RichW",  a=183.84,z=74.0,den=19.3,    radl=0.35,    absl=185.0/den);              //13 W - anod wires
 286   AliMedium(kW, "RichW", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 287
 288
 289   if(P()->IsRadioSrc()){
 290     AliInfo("Special radioactive source materials");
 291     AliMaterial(++material, "RichSteel",  a=55.845,z=26.0,den=7.87,    radl=1.76,    absl=131.9/den);        //14 Steel (Fe)
 292     AliMedium(kSteel, "RichSteel", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 293
 294     AliMaterial(++material, "RichPerpex",  a=63.54,z=29.0,den=8.96,    radl=1.4,    absl=0);                 //15 Perpex
 295     AliMedium(kPerpex, "RichPerpex", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 296
 297     AliMaterial(++material, "RichSr90",  a=87.62,z=38.0,den=2.54,    radl=4.24,    absl=0);                  //16 Sr90
 298     AliMedium(kSr90, "RichSr90", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 299
 300     Float_t aMylar[5]={12.01,1,16}; Float_t zMylar[5]={6,1,8};  Float_t wMylar[5]={5,4,5};                  //17 Mylar C5H4O5
 301     AliMixture(++material,"RichMylar",aMylar, zMylar, den=1.39, -3, wMylar);
 302     AliMedium(kMylar, "RichMylar", material, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 303   }
 304
 305 //Optical properties:
 306 #include "Opticals.h"
 307   gMC->SetCerenkov((*fIdtmed)[kAir]      , kNbins, aPckov, aAbsCH4    , aQeAll, aIdxCH4);       //1 Air
 308   gMC->SetCerenkov((*fIdtmed)[kRoha]     , kNbins, aPckov, aAbsCH4    , aQeAll, aIdxCH4);       //2 Honeycomb
 309   gMC->SetCerenkov((*fIdtmed)[kSiO2]     , kNbins, aPckov, aAbsSiO2   , aQeAll, aIdxSiO2);      //3 Quartz SiO2
 310   gMC->SetCerenkov((*fIdtmed)[kC6F14]    , kNbins, aPckov, aAbsC6F14  , aQeAll, aIdxC6F14);     //4 Freon C6F14
 311   gMC->SetCerenkov((*fIdtmed)[kCH4]      , kNbins, aPckov, aAbsCH4    , aQeAll, aIdxCH4);       //5 Methane CH4
 312   gMC->SetCerenkov((*fIdtmed)[kCsI]      , kNbins, aPckov, aAbsCsI    , aQeCsI, aIdxCH4);       //6 CsI
 313   gMC->SetCerenkov((*fIdtmed)[kGridCu]   , kNbins, aPckov, aAbsGrid   , aQeAll, aIdxMetal);     //7 grid Cu
 314   gMC->SetCerenkov((*fIdtmed)[kOpSiO2]   , kNbins, aPckov, aAbsOpSiO2 , aQeAll, aIdxMetal);     //8 Opaque quartz SiO2
 315   gMC->SetCerenkov((*fIdtmed)[kGap]      , kNbins, aPckov, aAbsCH4    , aQeAll, aIdxCH4);       //9 Special methane gap
 316   gMC->SetCerenkov((*fIdtmed)[kAl]       , kNbins, aPckov, aAbsGrid   , aQeAll, aIdxMetal);     //10 Aluminium
 317   gMC->SetCerenkov((*fIdtmed)[kGlass]    , kNbins, aPckov, aAbsOpSiO2 , aQeAll, aIdxMetal);     //11 Glass
 318   gMC->SetCerenkov((*fIdtmed)[kGel]      , kNbins, aPckov, aAbsGel    , aQeAll, aIdxGel);       //12 Aerogel
 319   gMC->SetCerenkov((*fIdtmed)[kReflector], kNbins, aPckov, aAbsRef    , aQeAll, aIdxMetal);     //13 Aerogel reflector
 320 }//void AliRICH::CreateMaterials()
 321 //__________________________________________________________________________________________________
 322 Float_t AliRICH::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
 323 {
 324
 325     //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
 326
 327     Float_t en[36] = {5.0,5.1,5.2,5.3,5.4,5.5,5.6,5.7,5.8,5.9,6.0,6.1,6.2,
 328                       6.3,6.4,6.5,6.6,6.7,6.8,6.9,7.0,7.1,7.2,7.3,7.4,7.5,7.6,7.7,
 329                       7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
 330     Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
 331                         2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
 332                         2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
 333                         1.72,1.53};
 334     Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
 335                         0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
 336                         0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
 337                         1.714,1.498};
 338     Float_t xe=ene;
 339     Int_t  j=Int_t(xe*10)-49;
 340     Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
 341     Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
 342
 343     //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
 344     //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
 345
 346     Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
 347     Float_t tanin=sinin/pdoti;
 348
 349     Float_t c1=cn*cn-ck*ck-sinin*sinin;
 350     Float_t c2=4*cn*cn*ck*ck;
 351     Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
 352     Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
 353
 354     Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
 355     Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
 356
 357
 358     //CORRECTION FACTOR FOR SURFACE ROUGHNESS
 359     //B.J. STAGG  APPLIED OPTICS, 30(1991),4113
 360
 361     Float_t sigraf=18.;
 362     Float_t lamb=1240/ene;
 363     Float_t fresn;
 364
 365     Float_t  rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
 366
 367     if(pola)
 368     {
 369         Float_t pdotr=0.8;                                 //DEGREE OF POLARIZATION : 1->P , -1->S
 370         fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
 371     }
 372     else
 373         fresn=0.5*(rp+rs);
 374
 375     fresn = fresn*rO;
 376     return(fresn);
 377 }//Fresnel()
 378 //__________________________________________________________________________________________________
 379 void AliRICH::MakeBranch(Option_t* option)
 380 {
 381 //Create Tree branches for the RICH.
 382   AliDebug(1,Form("Start with option= %s.",option));
 383
 384   const Int_t kBufferSize = 4000;
 385
 386   const char *cH = strstr(option,"H");
 387   const char *cD = strstr(option,"D");
 388   const char *cR = strstr(option,"R");
 389   const char *cS = strstr(option,"S");
 390
 391   if(cH&&TreeH()){//H
 392     HitsCreate();      //branch will be created in AliDetector::MakeBranch
 393   }//H
 394   AliDetector::MakeBranch(option);//this is after cH because we need to guarantee that fHits array is created
 395
 396   if(cS&&fLoader->TreeS()){//S
 397     SDigitsCreate();   MakeBranchInTree(fLoader->TreeS(),"RICH",&fSdigits,kBufferSize,0) ;
 398   }//S
 399
 400   if(cD&&fLoader->TreeD()){//D
 401     DigitsCreate();
 402     for(Int_t i=0;i<kNchambers;i++){
 403       MakeBranchInTree(fLoader->TreeD(),Form("%s%d",GetName(),i+1),&((*fDigs)[i]),kBufferSize,0);
 404     }
 405   }//D
 406
 407   if(cR&&fLoader->TreeR()){//R
 408     ClustersCreate();
 409     for(Int_t i=0;i<kNchambers;i++)
 410       MakeBranchInTree(fLoader->TreeR(),Form("%sClusters%d",GetName(),i+1), &((*fClus)[i]), kBufferSize, 0);
 411   }//R
 412   AliDebug(1,"Stop.");
 413 }//void AliRICH::MakeBranch(Option_t* option)
 414 //__________________________________________________________________________________________________
 415 void AliRICH::SetTreeAddress()
 416 {
 417 //Set branch address for the Hits and Digits Tree.
 418   AliDebug(1,"Start.");
 419
 420   TBranch *branch;
 421
 422   if(fLoader->TreeH()){//H
 423     AliDebug(1,"tree H is requested.");
 424     HitsCreate();//branch map will be in AliDetector::SetTreeAddress
 425   }//H
 426   AliDetector::SetTreeAddress();//this is after TreeH because we need to guarantee that fHits array is created
 427
 428   if(fLoader->TreeS()){//S
 429     AliDebug(1,"tree S is requested.");
 430     branch=fLoader->TreeS()->GetBranch(GetName());        if(branch){SDigitsCreate();   branch->SetAddress(&fSdigits);}
 431   }//S
 432
 433   if(fLoader->TreeD()){//D
 434     AliDebug(1,"tree D is requested.");
 435     for(int i=0;i<kNchambers;i++){
 436       branch=fLoader->TreeD()->GetBranch(Form("%s%d",GetName(),i+1));
 437       if(branch){DigitsCreate(); branch->SetAddress(&((*fDigs)[i]));}
 438     }
 439   }//D
 440
 441   if(fLoader->TreeR()){//R
 442     AliDebug(1,"tree R is requested.");
 443     for(int i=0;i<kNchambers;i++){
 444       branch=fLoader->TreeR()->GetBranch(Form("%sClusters%d" ,GetName(),i+1));
 445       if(branch){ClustersCreate(); branch->SetAddress(&((*fClus)[i]));}
 446     }
 447   }//R
 448   AliDebug(1,"Stop.");
 449 }//void AliRICH::SetTreeAddress()
 450 //__________________________________________________________________________________________________
 451 void AliRICH::Print(Option_t *option)const
 452 {
 453 //Debug printout
 454   TObject::Print(option);
 455   P()->Print();
 456   fCounters.Print();
 457 }//void AliRICH::Print(Option_t *option)const
 458 //__________________________________________________________________________________________________
 459 void AliRICH::ControlPlots()
 460 {
 461 //Creates a set of QA hists to control the results of simulation. Hists are in file $HOME/RCP.root
 462   TH1F             *pElecP=0 ,*pMuonP=0 ,*pPionP=0 ,*pKaonP=0 ,*pProtP=0,  //stack particles
 463                    *pHxD=0,*pHyD=0,*pHxSd=0,*pHySd=0,      //diff hit position - digit sdigit position
 464                    *pNumClusH1=0,
 465                    *pQdcH1=0,       *pSizeH1=0,
 466                    *pPureMipQdcH1=0,*pPureMipSizeH1=0,
 467                    *pPureCerQdcH1=0,*pPureCerSizeH1=0,
 468                    *pPureFeeQdcH1=0,*pPureFeeSizeH1=0,
 469                    *pMipQdcH1=0,    *pPhotQdcH1=0;
 470   TH2F *pMapH2=0,*pPureMipMapH2=0,*pPureCerMapH2=0,*pPureFeeMapH2=0;
 471   TH1F *pelecRadius=0,*pprotRadius=0,*pprotbarRadius=0;
 472 //load all information
 473                  GetLoader()->GetRunLoader()->LoadHeader();
 474                  GetLoader()->GetRunLoader()->LoadKinematics();
 475                  GetLoader()->LoadHits();
 476   Bool_t isSdig=0;//!GetLoader()->LoadSDigits();
 477   Bool_t isDig =0;//!GetLoader()->LoadDigits();
 478   Bool_t isClus=!GetLoader()->LoadRecPoints();
 479
 480   gBenchmark->Start("ControlPlots");
 481
 482   TFile *pFile = new TFile("$(HOME)/RCP.root","RECREATE");
 483
 484   pElecP=new TH1F("Pelec","Electrons made hit in RICH;p [GeV]",1000,-30,30);
 485   pMuonP=new TH1F("Pmuon","Muons made hit in RICH;p [GeV]",1000,-30,30);
 486   pPionP=new TH1F("Ppion","Pions made hit in RICH;p [GeV]",1000,-30,30);
 487   pKaonP=new TH1F("Pkaon","Kaon made hit in RICH;p [GeV]",1000,-30,30);
 488   pProtP=new TH1F("Pprot","Protons made hit in RICH;p [GeV]",1000,-30,30);
 489   pelecRadius=new TH1F("elecRadius","elec",600,0.,600.);
 490   pprotRadius=new TH1F("protRadius","elec",600,0.,600.);
 491   pprotbarRadius=new TH1F("protbarRadius","elec",600,0.,600.);
 492
 493   if(isSdig){
 494     AliInfo("SDigits available");
 495     pHxSd=new TH1F("DiffHitSDigitX","Hit-SDigit diff X all chambers;diff [cm]",300,-10,10);
 496     pHySd=new TH1F("DiffHitSDigitY","Hit-SDigit diff Y all chambers;diff [cm]",300,-10,10);
 497   }//isSdig
 498
 499   if(isDig){
 500     AliInfo("Digits available");
 501     pHxD=new TH1F("DiffHitDigitX","Hit-Digit diff X all chambers;diff [cm]",300,-10,10);
 502     pHyD=new TH1F("DiffHitDigitY","Hit-Digit diff Y all chambers;diff [cm]",300,-10,10);
 503   }//isDig
 504
 505   if(isClus){
 506     AliInfo("Clusters available");
 507     pNumClusH1=new TH1F("NumClusPerEvent","Number of clusters per event;number",50,0,49);
 508
 509     pQdcH1        =new TH1F("ClusQdc",   "Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 510     pSizeH1       =new TH1F("ClusSize",  "Cluster size all chambers;size [number of pads in cluster]",100,0,100);
 511     pMapH2        =new TH2F("ClusMap",   "Cluster map;x [cm];y [cm]",1000,0,P()->PcSizeX(),1000,0,P()->PcSizeY());
 512
 513     pMipQdcH1     =new TH1F("QdcMip"      ,"MIP Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 514     pPhotQdcH1    =new TH1F("QdcPhot"     ,"Cer+Fee Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 515
 516     pPureMipQdcH1 =new TH1F("QdcPureMip"  ,"MIP only Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 517     pPureMipSizeH1=new TH1F("SizePureMip" ,"MIP only Cluster size all chambers;size [number of pads in cluster]",100,0,100);
 518     pPureMipMapH2 =new TH2F("MapPureMip"  ,"MIP only Cluster map;x [cm];y [cm]",1000,0,P()->PcSizeX(),1000,0,P()->PcSizeY());
 519
 520     pPureCerQdcH1 =new TH1F("QdcPureCer"  ,"Cerenkov only Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 521     pPureCerSizeH1=new TH1F("SizePureCer" ,"Cernekov only Cluster size all chambers;size [number of pads in cluster]",100,0,100);
 522     pPureCerMapH2 =new TH2F("MapPureCer"  ,"Cerenkov only Cluster map;x [cm];y [cm]",1000,0,P()->PcSizeX(),1000,0,P()->PcSizeY());
 523
 524     pPureFeeQdcH1 =new TH1F("QdcPureFee"  ,"Feedback only Cluster Charge all chambers;q [QDC]",P()->MaxQdc(),0,P()->MaxQdc());
 525     pPureFeeSizeH1=new TH1F("SizePureFee" ,"Feedback only Cluster size all chambers;size [number of pads in cluster]",100,0,100);
 526     pPureFeeMapH2 =new TH2F("MapPureFee"  ,"Feedback only Cluster map;x [cm];y [cm]",1000,0,P()->PcSizeX(),1000,0,P()->PcSizeY());
 527
 528   }//isClus
 529 //end of hists booking
 530   for(Int_t iEvtN=0;iEvtN < GetLoader()->GetRunLoader()->GetAliRun()->GetEventsPerRun();iEvtN++){//events loop
 531     GetLoader()->GetRunLoader()->GetEvent(iEvtN);    //get current event
 532
 533     for(Int_t iPrimN=0;iPrimN < GetLoader()->TreeH()->GetEntries();iPrimN++){//hit tree loop
 534       GetLoader()->TreeH()->GetEntry(iPrimN);
 535       for(Int_t j=0;j<Hits()->GetEntries();j++){//hits loop
 536         AliRICHHit *pHit = (AliRICHHit*)Hits()->At(j);
 537         TParticle *pParticle = GetLoader()->GetRunLoader()->Stack()->Particle(pHit->GetTrack());//get particle produced this hit
 538         Double_t dRadius = TMath::Sqrt(pParticle->Vx()*pParticle->Vx()+pParticle->Vy()*pParticle->Vy()+pParticle->Vz()*pParticle->Vz());
 539         switch(pParticle->GetPdgCode()){
 540           case kPositron : pElecP->Fill( pParticle->P());pelecRadius->Fill(dRadius); break;
 541           case kElectron : pElecP->Fill(-pParticle->P());pelecRadius->Fill(dRadius); break;
 542
 543           case kMuonPlus : pMuonP->Fill( pParticle->P()); break;
 544           case kMuonMinus: pMuonP->Fill(-pParticle->P()); break;
 545
 546           case kPiPlus   : pPionP->Fill( pParticle->P()); break;
 547           case kPiMinus  : pPionP->Fill(-pParticle->P()); break;
 548
 549           case kKPlus    : pKaonP->Fill( pParticle->P()); break;
 550           case kKMinus   : pKaonP->Fill(-pParticle->P()); break;
 551
 552           case kProton   : pProtP->Fill( pParticle->P()); pprotRadius->Fill(dRadius); break;
 553           case kProtonBar: pProtP->Fill(-pParticle->P()); pprotbarRadius->Fill(dRadius); break;
 554
 555         }//switch PdgCode
 556
 557       }//hits loop
 558     }//hit tree loop
 559
 560     if(isSdig){
 561       GetLoader()->TreeS()->GetEntry(0);
 562       for(Int_t iSdigN=0;iSdigN<SDigits()->GetEntries();iSdigN++){//sdigits loop
 563         AliRICHDigit *pSdig=(AliRICHDigit*)SDigits()->At(iSdigN); //get current sdigit pointer
 564         AliRICHHit   *pHit=Hit(pSdig->GetTrack(0));               //get hit of this sdigit (always one)
 565         TVector2 hit2 =C(pHit->C())->Mrs2Pc(pHit->OutX3());       //this hit position  in local system
 566         TVector2 sdig2=P()->Pad2Loc(pSdig->Pad());                //center of pad for this sdigit
 567         pHxSd->Fill(hit2.X()-sdig2.X());
 568         pHySd->Fill(hit2.Y()-sdig2.Y());
 569       }//sdigits loop
 570     }//if(isSdig)
 571
 572     if(isDig)  GetLoader()->TreeD()->GetEntry(0);
 573     if(isClus) GetLoader()->TreeR()->GetEntry(0);
 574
 575     for(Int_t iChamN=1;iChamN<=7;iChamN++){//chambers loop
 576       if(isDig){
 577         for(Int_t iDigN=0;iDigN<Digits(iChamN)->GetEntries();iDigN++){//digits loop
 578           AliRICHDigit *pDig=(AliRICHDigit*)Digits(iChamN)->At(iDigN);
 579           AliRICHHit   *pHit=Hit(pDig->GetTrack(0));           //get first hit of this digit
 580           TVector2 hitV2=C(iChamN)->Mrs2Pc(pHit->OutX3());
 581           TVector2 digV2=P()->Pad2Loc(pDig->Pad());            //center of pad for this digit
 582           pHxD->Fill(hitV2.X()-digV2.X());        pHyD->Fill(hitV2.Y()-digV2.Y());
 583         }//digits loop
 584       }//isDig
 585       if(isClus){
 586         Int_t iNclusCham=Clusters(iChamN)->GetEntries(); if(iNclusCham) pNumClusH1->Fill(iNclusCham);//number of clusters per event
 587         for(Int_t iClusN=0;iClusN<iNclusCham;iClusN++){//clusters loop
 588           AliRICHCluster *pClus=(AliRICHCluster*)Clusters(iChamN)->At(iClusN);
 589                                        pQdcH1        ->Fill(pClus->Q());
 590                                        pSizeH1       ->Fill(pClus->Size());
 591                                        pMapH2        ->Fill(pClus->X(),pClus->Y()); //common
 592
 593            if(pClus->IsSingleMip())     {pPureMipQdcH1 ->Fill(pClus->Q());
 594                                        pPureMipSizeH1->Fill(pClus->Size());
 595                                        pPureMipMapH2 ->Fill(pClus->X(),pClus->Y());}//Pure Mips
 596
 597            if(pClus->IsSingleCerenkov()){pPureCerQdcH1 ->Fill(pClus->Q());
 598                                        pPureCerSizeH1->Fill(pClus->Size());
 599                                        pPureCerMapH2 ->Fill(pClus->X(),pClus->Y());}//Pure Cerenkovs
 600
 601            if(pClus->IsSingleFeedback()){pPureFeeQdcH1 ->Fill(pClus->Q());
 602                                        pPureFeeSizeH1->Fill(pClus->Size());
 603                                        pPureFeeMapH2 ->Fill(pClus->X(),pClus->Y());}//Pure Feedbacks
 604
 605            if(pClus->IsMip()) {pMipQdcH1 ->Fill(pClus->Q());} //MIP+ other contributions
 606            if(!pClus->IsPureMip())     pPhotQdcH1->Fill(pClus->Q());  //not MIP
 607         }//clusters loop
 608       }//isClus
 609     }//chambers loop
 610     Info("ControlPlots","Event %i processed.",iEvtN);
 611   }//events loop
 612              GetLoader()->UnloadHits();
 613   if(isSdig) GetLoader()->UnloadSDigits();
 614   if(isDig)  GetLoader()->UnloadDigits();
 615   if(isClus) GetLoader()->UnloadRecPoints();
 616
 617   GetLoader()->GetRunLoader()->UnloadHeader();
 618   GetLoader()->GetRunLoader()->UnloadKinematics();
 619
 620   pFile->Write(); delete pFile;
 621
 622   gBenchmark->Show("ControlPlots");
 623 }//ControlPlots()
 624 //__________________________________________________________________________________________________
 625 AliRICHHit* AliRICH::Hit(Int_t tid)const
 626 {
 627 //defines which hit provided by given tid for the currently loaded event
 628   GetLoader()->LoadHits();
 629   for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
 630     GetLoader()->TreeH()->GetEntry(iPrimN);
 631     for(Int_t iHitN=0;iHitN<Hits()->GetEntries();iHitN++){
 632       AliRICHHit *pHit=(AliRICHHit*)Hits()->At(iHitN);
 633       if(tid==pHit->Track()) {GetLoader()->UnloadHits();return pHit;}
 634     }//hits
 635   }//prims loop
 636   GetLoader()->UnloadHits();
 637   return 0;
 638 }
 639 //__________________________________________________________________________________________________
 640 void AliRICH::HitsPrint(Int_t iEvtN)const
 641 {
 642 //Prints a list of RICH hits for a given event. Default is event number 0.
 643   if(GetLoader()->GetRunLoader()->GetEvent(iEvtN)) return;
 644   AliInfo(Form("List of RICH hits for event %i",iEvtN));
 645   if(GetLoader()->LoadHits()) return;
 646
 647   Int_t iTotalHits=0;
 648   for(Int_t iPrimN=0;iPrimN<GetLoader()->TreeH()->GetEntries();iPrimN++){//prims loop
 649     GetLoader()->TreeH()->GetEntry(iPrimN);
 650     Hits()->Print();
 651     iTotalHits+=Hits()->GetEntries();
 652   }
 653   GetLoader()->UnloadHits();
 654   AliInfo(Form("totally %i hits",iTotalHits));
 655 }
 656 //__________________________________________________________________________________________________
 657 void AliRICH::SDigitsPrint(Int_t iEvtN)const
 658 {
 659 //prints a list of RICH sdigits  for a given event
 660   if(GetLoader()->GetRunLoader()->GetEvent(iEvtN)) return;
 661   Info("PrintSDigits","List of RICH sdigits for event %i",iEvtN);
 662   if(GetLoader()->LoadSDigits()) return;
 663
 664   GetLoader()->TreeS()->GetEntry(0);
 665   SDigits()->Print();
 666   GetLoader()->UnloadSDigits();
 667   Info("PrintSDigits","totally %i sdigits",SDigits()->GetEntries());
 668 }
 669 //__________________________________________________________________________________________________
 670 void AliRICH::DigitsPrint(Int_t iEvtN)const
 671 {
 672 //prints a list of RICH digits  for a given event
 673   if(GetLoader()->GetRunLoader()->GetEvent(iEvtN)) return;
 674   Info("PrintDigits","List of RICH digits for event %i",iEvtN);
 675   if(GetLoader()->LoadDigits()) return;
 676
 677   Int_t iTotalDigits=0;
 678   GetLoader()->TreeD()->GetEntry(0);
 679   for(Int_t iChamber=1;iChamber<=kNchambers;iChamber++){
 680     Digits(iChamber)->Print();
 681     iTotalDigits+=Digits(iChamber)->GetEntries();
 682   }
 683   GetLoader()->UnloadDigits();
 684   Info("PrintDigits","totally %i Digits",iTotalDigits);
 685 }
 686 //__________________________________________________________________________________________________
 687 void AliRICH::ClustersPrint(Int_t iEvtN)const
 688 {
 689 //prints a list of RICH clusters  for a given event
 690   AliInfo(Form("List of RICH clusters for event %i",iEvtN));
 691   GetLoader()->GetRunLoader()->GetEvent(iEvtN);
 692   if(GetLoader()->LoadRecPoints()) return;
 693
 694   Int_t iTotalClusters=0;
 695   GetLoader()->TreeR()->GetEntry(0);
 696   for(Int_t iChamber=1;iChamber<=kNchambers;iChamber++){
 697     Clusters(iChamber)->Print();
 698     iTotalClusters+=Clusters(iChamber)->GetEntries();
 699   }
 700   GetLoader()->UnloadRecPoints();
 701   AliInfo(Form("totally %i clusters for event %i",iTotalClusters,iEvtN));
 702 }
 703 //__________________________________________________________________________________________________
 704 void AliRICH::PrintTracks(Int_t iEvtN)
 705 {
 706 //prints a list of tracks (including secondary) for a given event
 707   AliInfo(Form("List of all tracks for event %i",iEvtN));
 708   GetLoader()->GetRunLoader()->GetEvent(iEvtN);
 709   if(GetLoader()->GetRunLoader()->LoadHeader()) return;
 710   if(GetLoader()->GetRunLoader()->LoadKinematics()) return;
 711   AliStack *pStack=GetLoader()->GetRunLoader()->Stack();
 712
 713   for(Int_t i=0;i<pStack->GetNtrack();i++) pStack->Particle(i)->Print();
 714
 715   AliInfo(Form("totally %i tracks including %i primaries for event %i",pStack->GetNtrack(),pStack->GetNprimary(),iEvtN));
 716   GetLoader()->GetRunLoader()->UnloadHeader();
 717   GetLoader()->GetRunLoader()->UnloadKinematics();
 718 }
 719 //__________________________________________________________________________________________________
 720 void AliRICH::GeomPadPanelFrame()const
 721 {
 722 //Pad Panel frame  6 sectors
 723   Double_t cm=1,mm=0.1*cm;//default is cm
 724   Float_t par[3];
 725
 726   par[0]=648*mm/2;par[1]=  411*mm/2;par[2]=40  *mm/2;gMC->Gsvolu("RPPF","BOX ",(*fIdtmed)[kAl]  ,par,3);//PPF 2001P2 inner size of the slab by 1mm more
 727   par[0]=181*mm/2;par[1]=89.25*mm/2;par[2]=38.3*mm/2;gMC->Gsvolu("PPFL","BOX ",(*fIdtmed)[kAir] ,par,3);//large whole
 728   par[0]=114*mm/2;par[1]=89.25*mm/2;par[2]=38.3*mm/2;gMC->Gsvolu("PPFS","BOX ",(*fIdtmed)[kAir] ,par,3);//small whole
 729   par[0]=644*mm/2;par[1]=  407*mm/2;par[2]= 1.7*mm/2;gMC->Gsvolu("RPC ","BOX ",(*fIdtmed)[kCsI] ,par,3);//by 0.2 mm more then actual size (PCB 2006P1)
 730
 731   gMC->Gspos("RPPF",1,"RICH",    -335*mm,      -433*mm,  8*cm+20*mm,  0,"ONLY");//F1 2040P1 z p.84 TDR
 732   gMC->Gspos("RPPF",2,"RICH",    +335*mm,      -433*mm,  8*cm+20*mm,  0,"ONLY");
 733   gMC->Gspos("RPPF",3,"RICH",    -335*mm,         0*mm,  8*cm+20*mm,  0,"ONLY");
 734   gMC->Gspos("RPPF",4,"RICH",    +335*mm,         0*mm,  8*cm+20*mm,  0,"ONLY");
 735   gMC->Gspos("RPPF",5,"RICH",    -335*mm,      +433*mm,  8*cm+20*mm,  0,"ONLY");
 736   gMC->Gspos("RPPF",6,"RICH",    +335*mm,      +433*mm,  8*cm+20*mm,  0,"ONLY");
 737     gMC->Gspos("RPC ",1,"RPPF",       0*mm,         0*mm,   -19.15*mm,  0,"ONLY");//PPF 2001P2
 738     gMC->Gspos("PPFL",1,"RPPF",  -224.5*mm,  -151.875*mm,     0.85*mm,  0,"ONLY");
 739     gMC->Gspos("PPFL",2,"RPPF",  -224.5*mm,  - 50.625*mm,     0.85*mm,  0,"ONLY");
 740     gMC->Gspos("PPFL",3,"RPPF",  -224.5*mm,  + 50.625*mm,     0.85*mm,  0,"ONLY");
 741     gMC->Gspos("PPFL",4,"RPPF",  -224.5*mm,  +151.875*mm,     0.85*mm,  0,"ONLY");
 742     gMC->Gspos("PPFS",1,"RPPF",  - 65.0*mm,  -151.875*mm,     0.85*mm,  0,"ONLY");
 743     gMC->Gspos("PPFS",2,"RPPF",  - 65.0*mm,  - 50.625*mm,     0.85*mm,  0,"ONLY");
 744     gMC->Gspos("PPFS",3,"RPPF",  - 65.0*mm,  + 50.625*mm,     0.85*mm,  0,"ONLY");
 745     gMC->Gspos("PPFS",4,"RPPF",  - 65.0*mm,  +151.875*mm,     0.85*mm,  0,"ONLY");
 746     gMC->Gspos("PPFS",5,"RPPF",  + 65.0*mm,  -151.875*mm,     0.85*mm,  0,"ONLY");
 747     gMC->Gspos("PPFS",6,"RPPF",  + 65.0*mm,  - 50.625*mm,     0.85*mm,  0,"ONLY");
 748     gMC->Gspos("PPFS",7,"RPPF",  + 65.0*mm,  + 50.625*mm,     0.85*mm,  0,"ONLY");
 749     gMC->Gspos("PPFS",8,"RPPF",  + 65.0*mm,  +151.875*mm,     0.85*mm,  0,"ONLY");
 750     gMC->Gspos("PPFL",5,"RPPF",  +224.5*mm,  -151.875*mm,     0.85*mm,  0,"ONLY");
 751     gMC->Gspos("PPFL",6,"RPPF",  +224.5*mm,  - 50.625*mm,     0.85*mm,  0,"ONLY");
 752     gMC->Gspos("PPFL",7,"RPPF",  +224.5*mm,  + 50.625*mm,     0.85*mm,  0,"ONLY");
 753     gMC->Gspos("PPFL",8,"RPPF",  +224.5*mm,  +151.875*mm,     0.85*mm,  0,"ONLY");
 754 }//GeomPadPanelFrame()
 755 //__________________________________________________________________________________________________
 756 void AliRICH::GeomAmpGap()const
 757 {
 758 //Gap - anod wires 6 copies to RICH
 759   Double_t cm=1,mm=0.1*cm,mkm=0.001*mm;//default is cm
 760   Int_t matrixIdReturn=0; //matrix id returned by AliMatrix
 761   Float_t par[3];
 762
 763   par[0]=648*mm/2;par[1]=  411*mm/2 ;par[2]=4.45*mm/2;gMC->Gsvolu("RGAP ","BOX ",(*fIdtmed)[kCH4] ,par,3);//xy as PPF 2001P2 z WP 2099P1
 764   par[0]=  0*mm  ;par[1]=  20*mkm/2 ;par[2]= 648*mm/2;gMC->Gsvolu("RANO","TUBE",(*fIdtmed)[kW]   ,par,3);//WP 2099P1 z = gap x PPF 2001P2
 765   AliMatrix(matrixIdReturn,180,0, 90,90, 90,0); //wires along x
 766
 767   gMC->Gspos("RGAP",1,"RICH",    -335*mm,      -433*mm,8*cm-2.225*mm, 0,"ONLY"); //F1 2040P1 z WP 2099P1
 768   gMC->Gspos("RGAP",2,"RICH",    +335*mm,      -433*mm,8*cm-2.225*mm, 0,"ONLY");
 769   gMC->Gspos("RGAP",3,"RICH",    -335*mm,         0*mm,8*cm-2.225*mm, 0,"ONLY");
 770   gMC->Gspos("RGAP",4,"RICH",    +335*mm,         0*mm,8*cm-2.225*mm, 0,"ONLY");
 771   gMC->Gspos("RGAP",5,"RICH",    -335*mm,      +433*mm,8*cm-2.225*mm, 0,"ONLY");
 772   gMC->Gspos("RGAP",6,"RICH",    +335*mm,      +433*mm,8*cm-2.225*mm, 0,"ONLY");
 773   for(int i=1;i<=96;i++)
 774     gMC->Gspos("RANO",i,"RGAP",     0*mm, -411/2*mm+i*4*mm, 0.185*mm, matrixIdReturn,"ONLY"); //WP 2099P1
 775 }//GeomAmpGap()
 776 //__________________________________________________________________________________________________
 777 void AliRICH::GeomRadiators()const
 778 {
 779 //Defines radiators geometry
 780   Double_t mm=0.1;//default is cm
 781   Float_t par[3];
 782   par[0]=1330*mm/2 ;par[1]= 413*mm/2  ;par[2]=  24*mm/2;  gMC->Gsvolu("RRAD","BOX ",(*fIdtmed)[kC6F14]     ,par,3); // Rad 2011P1
 783   par[0]=1330*mm/2 ;par[1]= 413*mm/2  ;par[2]=   4*mm/2;  gMC->Gsvolu("RRFR","BOX ",(*fIdtmed)[kRoha]      ,par,3); //front
 784   par[0]=1330*mm/2 ;par[1]= 413*mm/2  ;par[2]=   5*mm/2;  gMC->Gsvolu("RRWI","BOX ",(*fIdtmed)[kSiO2]      ,par,3); //window
 785   par[0]=1330*mm/2 ;par[1]=   5*mm/2  ;par[2]=  15*mm/2;  gMC->Gsvolu("RRLO","BOX ",(*fIdtmed)[kRoha]      ,par,3); //long side
 786   par[0]=  10*mm/2 ;par[1]= 403*mm/2  ;par[2]=  15*mm/2;  gMC->Gsvolu("RRSH","BOX ",(*fIdtmed)[kRoha]      ,par,3); //short side
 787   par[0]=   0      ;par[1]=  10*mm/2  ;par[2]=  15*mm/2;  gMC->Gsvolu("RRSP","TUBE",(*fIdtmed)[kSiO2]      ,par,3); //spacer
 788
 789   gMC->Gspos("RRAD",1,"RICH",   0*mm,-434*mm,   -12*mm,  0,"ONLY"); //3 radiators to RICH
 790   gMC->Gspos("RRAD",2,"RICH",   0*mm,   0*mm,   -12*mm,  0,"ONLY");
 791   gMC->Gspos("RRAD",3,"RICH",   0*mm,+434*mm,   -12*mm,  0,"ONLY");
 792     gMC->Gspos("RRFR",1,"RRAD",   0*mm,   0*mm, -10.0*mm,  0,"ONLY"); //front cover
 793     gMC->Gspos("RRWI",1,"RRAD",   0*mm,   0*mm,   9.5*mm,  0,"ONLY"); //quartz window (back cover)
 794     gMC->Gspos("RRLO",1,"RRAD",   0*mm,-204*mm,  -0.5*mm,  0,"ONLY"); //long side
 795     gMC->Gspos("RRLO",2,"RRAD",   0*mm,+204*mm,  -0.5*mm,  0,"ONLY"); //long side
 796     gMC->Gspos("RRSH",1,"RRAD",-660*mm,   0*mm,  -0.5*mm,  0,"ONLY"); //short side
 797     gMC->Gspos("RRSH",2,"RRAD",+660*mm,   0*mm,  -0.5*mm,  0,"ONLY"); //short side
 798     for(int i=0;i<3;i++)
 799       for(int j=0;j<10;j++)
 800         gMC->Gspos("RRSP",10*i+j,"RRAD",-1330*mm/2+116*mm+j*122*mm,(i-1)*105*mm,-0.5*mm,0,"ONLY");//spacers
 801 }//GeomRadiators()
 802 //__________________________________________________________________________________________________
 803 void AliRICH::GeomSandBox()const
 804 {
 805 //Defines SandBox geometry
 806   Double_t mm=0.1;//default is cm
 807   Float_t par[3];
 808   par[0]=1419*mm/2 ;par[1]=1378*mm/2;par[2]=50.5*mm/2; gMC->Gsvolu("RSNB","BOX ",(*fIdtmed)[kAir]  ,par,3);  //2072P1
 809   par[0]=1419*mm/2 ;par[1]=1378*mm/2;par[2]= 0.5*mm/2; gMC->Gsvolu("RSCO","BOX ",(*fIdtmed)[kAl]   ,par,3);  //cover
 810   par[0]=1359*mm/2 ;par[1]=1318*mm/2;par[2]=49.5*mm/2; gMC->Gsvolu("RSHO","BOX ",(*fIdtmed)[kRoha] ,par,3); //honeycomb structure
 811
 812   gMC->Gspos("RSNB",1,"RICH",   0*mm, 0*mm, -73.75*mm, 0,"ONLY"); //p.84 TDR sandbox to rich
 813     gMC->Gspos("RSHO",1,"RSNB", 0*mm, 0*mm,      0*mm, 0,"ONLY"); //2072P1 honeycomv to sandbox
 814     gMC->Gspos("RSCO",1,"RSNB", 0*mm, 0*mm,    +25*mm, 0,"ONLY"); //cover to sandbox
 815     gMC->Gspos("RSCO",2,"RSNB", 0*mm, 0*mm,    -25*mm, 0,"ONLY"); //cover to sandbox
 816 }//GeomSandBox()
 817 //__________________________________________________________________________________________________
 818 void AliRICH::GeomRadioSrc()const
 819 {
 820 // Defines geometry for radioactive source
 821   Double_t cm=1,mm=0.1*cm,mkm=0.001*cm;
 822   Float_t par[3];
 823
 824   par[0]=0 ;par[1]= 70*mm/2  ;par[2]=  30*mm/2;      gMC->Gsvolu("RSRC","TUBE",(*fIdtmed)[kCH4]    ,par,3); //top src container
 825     par[0]=0 ;par[1]= 38*mm/2  ;par[2]=  21.8*mm/2;  gMC->Gsvolu("RSAG","TUBE",(*fIdtmed)[kAl]     ,par,3); //Al glass
 826       par[0]=0 ;par[1]= 34*mm/2  ;par[2]=  20*mm/2;  gMC->Gsvolu("RSPP","TUBE",(*fIdtmed)[kPerpex] ,par,3); //perpex plug
 827         par[0]=0 ;par[1]= 5*mm/2  ;par[2]=  15*mm/2; gMC->Gsvolu("RSSC","TUBE",(*fIdtmed)[kSteel]  ,par,3); //steel screw in center of perpex
 828         par[0]=0 ;par[1]= 2*mm/2  ;par[2]=  10*mm/2; gMC->Gsvolu("RSSS","TUBE",(*fIdtmed)[kSteel]  ,par,3); //Steel screw to support Sr90
 829           par[0]=0 ;par[1]= 1*mm/2  ;par[2]= 1*mm/2; gMC->Gsvolu("RSSR","TUBE",(*fIdtmed)[kSr90]   ,par,3); //Sr90 source
 830         par[0]=0 ;par[1]= 4*mm/2  ;par[2]= 10*mm/2;  gMC->Gsvolu("RSWP","TUBE",(*fIdtmed)[kAir]    ,par,3); //Air hole in perpex plug
 831       par[0]=0 ;par[1]= 5*mm/2  ;par[2]= 1.8*mm/2;   gMC->Gsvolu("RSWA","TUBE",(*fIdtmed)[kAir]    ,par,3); //Air hole in Al glass bottom
 832     par[0]=0 ;par[1]= 30*mm/2  ;par[2]= 50*mkm/2;    gMC->Gsvolu("RSMF","TUBE",(*fIdtmed)[kMylar]  ,par,3); //Mylar foil
 833
 834   gMC->Gspos("RSRC",1,"RICH",       30*cm,        0,     1*cm, 0,"ONLY"); //source to RICH
 835     gMC->Gspos("RSMF",1,"RSRC",         0,        0,21.8*mm/2+50*mkm/2, 0,"ONLY");//mylar foil to top src volume
 836     gMC->Gspos("RSAG",1,"RSRC",         0,        0,        0, 0,"ONLY");//Al glass to fake Src volume
 837       gMC->Gspos("RSWA",1,"RSAG",    6*mm,        0,   -10*mm, 0,"ONLY");//air whole in al glass bottom
 838       gMC->Gspos("RSPP",1,"RSAG",       0,        0,   0.9*mm, 0,"ONLY");//perpex plug to Al glass
 839         gMC->Gspos("RSWP",1,"RSPP",  6*mm,        0,    -5*mm, 0,"ONLY");//air whole in perpex plug
 840         gMC->Gspos("RSSC",1,"RSPP",     0,        0,   2.5*mm, 0,"ONLY");//steel screw in center of perpex plug
 841         gMC->Gspos("RSSS",1,"RSPP",  6*mm,        0,     5*mm, 0,"ONLY");//steel screw to support Sr90  in perpex plug
 842           gMC->Gspos("RSSR",1,"RSSS",   0,        0,  -4.5*mm, 0,"ONLY");//Sr90  in support steel screw
 843 }//GeomSr90()
 844 //__________________________________________________________________________________________________
 845 void AliRICH::GeomAerogel()const
 846 {
 847 //Creates detailed geometry for aerogel study.
 848   AliDebug(1,"Start.");
 849   Double_t cm=1;
 850   Float_t par[3]; //tmp array for volume dimentions
 851
 852   par[0]=10.1*cm/2;par[1]=10.1*cm/2;par[2]=10.1*cm/2;
 853   gMC->Gsvolu("RREF","BOX ",(*fIdtmed)[kReflector],par,3);//reflector box
 854   gMC->Gspos("RREF",1,"RICH",0,0,0,0, "ONLY");            //put it to RICH volume
 855
 856   par[0]=10*cm/2;par[1]=10*cm/2;par[2]=10*cm/2;
 857   gMC->Gsvolu("RGEL","BOX ",(*fIdtmed)[kGel],par,3);//10x10x10 cm^3 cubic of aerogel
 858   gMC->Gspos("RGEL",1,"RREF",0,0,0,0,"ONLY");//put gel cell to reflector
 859   AliDebug(1,"Stop.");
 860 }//GeomAerogel()
 861 //__________________________________________________________________________________________________
 862 void AliRICH::CreateGeometry()
 863 {
 864 //Creates detailed geometry simulation (currently GEANT volumes tree)
 865   AliDebug(1,"Start main.");
 866   Double_t mm=0.1;//default is cm
 867   Float_t par[3];
 868   Int_t matrixIdReturn=0; //matrix id returned by AliMatrix
 869
 870 //place chambers into mother volume ALIC
 871   par[0]=(6*mm+1681*mm+6*mm)/2;par[1]=(6*mm+1466*mm+6*mm)/2;par[2]=(80*mm+40*mm)*2/2;
 872   gMC->Gsvolu("RICH","BOX ",(*fIdtmed)[kCH4],par,3);//2033P1  z p84 TDR
 873   for(int i=1;i<=P()->Nchambers();i++){ //test configuration with single chamber is taken into account automaticaly in AliRICHParam
 874     AliMatrix(matrixIdReturn,
 875                    C(i)->ThetaXd(),C(i)->PhiXd(),
 876                    C(i)->ThetaYd(),C(i)->PhiYd(),
 877                    C(i)->ThetaZd(),C(i)->PhiZd());
 878     gMC->Gspos("RICH",i,"ALIC",C(i)->Center().X(),
 879                                C(i)->Center().Y(),
 880                                C(i)->Center().Z(),matrixIdReturn, "ONLY");
 881   }
 882
 883   if(P()->IsAerogel())
 884     GeomAerogel();
 885   else{
 886     GeomPadPanelFrame();
 887     GeomAmpGap();
 888     if(P()->IsRadioSrc())    GeomRadioSrc(); else GeomRadiators();
 889     GeomSandBox();
 890   }
 891   AliDebug(1,"Stop main.");
 892 }//CreateGeometry()
 893 //__________________________________________________________________________________________________
 894 void AliRICH::CheckPR()const
 895 {
 896 //Pattern recognition with stack particles
 897   TFile *pFile = new TFile("$(HOME)/RPR.root","RECREATE","RICH Pattern Recognition");
 898   TNtupleD *hn = new TNtupleD("hn","ntuple","Pmod:Charge:TrackTheta:TrackPhi:TrackX:TrackY:MinX:MinY:ChargeMIP:ThetaCerenkov:NPhotons:MipIndex:Chamber:Particle");
 899 //  printf("\n\n");
 900 //  printf("Pattern Recognition done for event %5i",0);
 901   AliMagF * magf = gAlice->Field();
 902   AliTracker::SetFieldMap(magf);
 903   for(Int_t iEvtN=0;iEvtN<GetLoader()->GetRunLoader()->GetNumberOfEvents();iEvtN++) {
 904     GetLoader()->GetRunLoader()->GetEvent(iEvtN);
 905     AliRICHTracker *tr = new AliRICHTracker();
 906     tr->RecWithStack(hn);
 907     Info("CheckPR","Pattern Recognition done for event %i \b",iEvtN);
 908 //    printf("\b\b\b\b\b%5i",iEvtN+1);
 909   }
 910   printf("\n\n");
 911   pFile->Write();pFile->Close();
 912 }
 913 //__________________________________________________________________________________________________
 914 void AliRICH::DisplayEvent(Int_t iEvtNmin,Int_t iEvtNmax)const
 915 {
 916   TH2F *pDigitsH2[8];
 917
 918   Bool_t isDigits  =!GetLoader()->LoadDigits();
 919   if(!isDigits){Error("ShoEvent","No digits. Nothing to display.");return;}
 920
 921   TCanvas *canvas = new TCanvas("RICHDisplay","RICH Display",0,0,1226,900);   canvas->Divide(3,3);
 922 //  gStyle->SetPalette(1);
 923
 924
 925   for(Int_t iChamber=1;iChamber<=7;iChamber++) {
 926     pDigitsH2[iChamber] = new TH2F(Form("pDigitsH2_%i",iChamber),Form("Chamber %i",iChamber),165,0,P()->PcSizeX(),144,0,P()->PcSizeY());
 927     pDigitsH2[iChamber]->SetMarkerColor(kGreen);
 928     pDigitsH2[iChamber]->SetMarkerStyle(29);
 929     pDigitsH2[iChamber]->SetMarkerSize(0.4);
 930     pDigitsH2[iChamber]->SetStats(kFALSE);
 931   }
 932
 933   if(iEvtNmax>gAlice->GetEventsPerRun()) iEvtNmax=gAlice->GetEventsPerRun();
 934
 935   TLatex t;  t.SetTextSize(0.1);
 936   for(Int_t iEventN=iEvtNmin;iEventN<=iEvtNmax;iEventN++) {//events loop
 937     canvas->cd(1);
 938     t.DrawText(0.2,0.4,Form("Event Number %i",iEventN));
 939
 940     GetLoader()->GetRunLoader()->GetEvent(iEventN); //get event
 941     GetLoader()->TreeD()->GetEntry(0);              //get list of digits
 942     for(Int_t iChamber=1;iChamber<=7;iChamber++) {//chambers loop
 943       pDigitsH2[iChamber]->Reset();
 944       for(Int_t j=0;j<Digits(iChamber)->GetEntries();j++) {//digits loop
 945         AliRICHDigit *pDig = (AliRICHDigit*)Digits(iChamber)->At(j);
 946         TVector2 x2=AliRICHParam::Pad2Loc(pDig->Pad());
 947         pDigitsH2[iChamber]->Fill(x2.X(),x2.Y());
 948       }//digits loop
 949       if(iChamber==1) canvas->cd(7);
 950       if(iChamber==2) canvas->cd(8);
 951       if(iChamber==3) canvas->cd(4);
 952       if(iChamber==4) canvas->cd(5);
 953       if(iChamber==5) canvas->cd(6);
 954       if(iChamber==6) canvas->cd(2);
 955       if(iChamber==7) canvas->cd(3);
 956       pDigitsH2[iChamber]->Draw();
 957     }//chambers loop
 958     canvas->Update();
 959     canvas->Modified();
 960
 961     if(iEvtNmin<iEvtNmax) gPad->WaitPrimitive();
 962   }//events loop
 963 }//ShowEvent()
 964 //__________________________________________________________________________________________________
 965 void AliRICH::Display()const
 966 {
 967 //Provides fast event display
 968 //For RICH only, full display is .x Display.C
 969   Bool_t isHits    =!GetLoader()->LoadHits();
 970   Bool_t isDigits  =!GetLoader()->LoadDigits();
 971   Bool_t isClusters=!GetLoader()->LoadRecPoints();
 972
 973   if(!isHits && !isDigits && !isClusters){Error("Exec","No hits digits and clusters. Nothing to display.");return;}
 974
 975   TCanvas *pCanvas = new TCanvas("Display","RICH Display",0,0,600,600);
 976
 977   TH2F *pHitsH2=0,*pDigitsH2=0,*pClustersH2=0;
 978
 979   if(isHits)     pHitsH2     = new TH2F("pHitsH2"  ,  "Event Display;x,cm;y,cm",165,0,AliRICHParam::PcSizeX(),
 980                                                                                 144,0,AliRICHParam::PcSizeY());
 981   if(pHitsH2)    pHitsH2->SetStats(kFALSE);
 982
 983   if(isDigits)   pDigitsH2   = new TH2F("pDigitsH2"  ,"Event Display",165,0,AliRICHParam::PcSizeX(),
 984                                                                       144,0,AliRICHParam::PcSizeY());
 985   if(isClusters) pClustersH2 = new TH2F("pClustersH2","Event Display",165,0,AliRICHParam::PcSizeX(),
 986                                                                       144,0,AliRICHParam::PcSizeY());
 987
 988   for(Int_t iEventN=0;iEventN<gAlice->GetEventsPerRun();iEventN++){//events Loop
 989     GetLoader()->GetRunLoader()->GetEvent(iEventN);
 990 //display all the staff on chamber by chamber basis
 991     for(Int_t iChamber=1;iChamber<=7;iChamber++){//chambers loop
 992       if(isHits)     pHitsH2    ->Reset();
 993       if(isDigits)   pDigitsH2  ->Reset();
 994       if(isClusters) pClustersH2->Reset();
 995 //deals with hits
 996       for(Int_t i=0;i<GetLoader()->TreeH()->GetEntries();i++){//TreeH loop
 997         GetLoader()->TreeH()->GetEntry(i);
 998         for(Int_t j=0;j<Hits()->GetEntries();j++){//hits loop
 999           AliRICHHit *pHit = (AliRICHHit*)Hits()->At(j);
1000           if(pHit->C()==iChamber){
1001             TVector3 hitGlobX3= pHit->OutX3();
1002             TVector2 hitLocX2 = C(iChamber)->Mrs2Pc(hitGlobX3);
1003             pHitsH2->Fill(hitLocX2.X(),hitLocX2.Y(),200);
1004           }//if
1005         }//hits loop
1006       }//TreeH loop
1007       pHitsH2->SetTitle(Form("event %i chamber %2i",iEventN,iChamber));
1008       pHitsH2->SetMarkerColor(kRed); pHitsH2->SetMarkerStyle(29); pHitsH2->SetMarkerSize(0.4);
1009       pHitsH2->Draw();
1010
1011       ReadESD(iEventN,iChamber);
1012
1013       AliRICHParam::DrawSectors();
1014       TLatex l; l.SetNDC(); l.SetTextSize(0.02);
1015       if(!isHits)     {l.SetTextColor(kRed)  ;l.DrawLatex(0.1,0.01,"No Hits"    );}
1016       if(!isDigits)   {l.SetTextColor(kGreen);l.DrawLatex(0.4,0.01,"No DIGITS"  );}
1017       if(!isClusters) {l.SetTextColor(kBlue) ;l.DrawLatex(0.8,0.01,"No CLUSTERS");}
1018       pCanvas->Update();        pCanvas->Modified();       gPad->WaitPrimitive();
1019 //deals with digits
1020       if(isDigits){
1021         GetLoader()->TreeD()->GetEntry(0);
1022         for(Int_t j=0;j<Digits(iChamber)->GetEntries();j++){//digits loop
1023           AliRICHDigit *pDig = (AliRICHDigit*)Digits(iChamber)->At(j);
1024           TVector2 x2=AliRICHParam::Pad2Loc(pDig->Pad());
1025           pDigitsH2->Fill(x2.X(),x2.Y(),100);
1026         }//digits loop
1027         pDigitsH2->SetMarkerColor(kGreen); pDigitsH2->SetMarkerStyle(29); pDigitsH2->SetMarkerSize(0.4);
1028         pDigitsH2->Draw("same");
1029         pCanvas->Update();        pCanvas->Modified();       gPad->WaitPrimitive();
1030       }//if(isDigits)
1031 //deals with clusters
1032       if(isClusters){
1033         GetLoader()->TreeR()->GetEntry(0);
1034         for(Int_t j=0;j<Clusters(iChamber)->GetEntries();j++){//clusters loop
1035           AliRICHCluster *pClus = (AliRICHCluster*)Clusters(iChamber)->At(j);
1036           pClustersH2->Fill(pClus->X(),pClus->Y(),50);
1037         }//clusters loop
1038         pClustersH2->SetMarkerColor(kBlue); pClustersH2->SetMarkerStyle(29);  pClustersH2->SetMarkerSize(0.4);
1039         pClustersH2->Draw("same");
1040         pCanvas->Update();        pCanvas->Modified();       gPad->WaitPrimitive();
1041       }//if(isClusters)
1042     }//chambers loop
1043   }//events Loop
1044
1045   delete pCanvas;
1046   GetLoader()->UnloadHits();
1047   if(isDigits)   GetLoader()->UnloadDigits();
1048   if(isClusters) GetLoader()->UnloadRecPoints();
1049 }//Display()
1050 //__________________________________________________________________________________________________
1051 Int_t AliRICH::Nparticles(Int_t iPartID,Int_t iEvtN,AliRunLoader *pRL)
1052 {
1053 //counts total number of particles of given type (including secondary) for a given event
1054   pRL->GetEvent(iEvtN);
1055   if(pRL->LoadHeader()) return 0;
1056   if(pRL->LoadKinematics()) return 0;
1057   AliStack *pStack=pRL->Stack();
1058
1059   Int_t iCounter=0;
1060   for(Int_t i=0;i<pStack->GetNtrack();i++){
1061     if(pStack->Particle(i)->GetPdgCode()==iPartID) iCounter++;
1062   }
1063
1064   pRL->UnloadHeader();
1065   pRL->UnloadKinematics();
1066   return iCounter;
1067 }
1068 //__________________________________________________________________________________________________
1069 void AliRICH::ReadESD(Int_t iEventN, Int_t iChamber)const
1070 {
1071 //
1072 //  AliInfo("Start.");
1073   TFile *pFile=TFile::Open("AliESDs.root","read");
1074   if(!pFile || !pFile->IsOpen()) {AliInfo("ESD file not open.");return;}      //open AliESDs.root
1075   TTree *pTree = (TTree*) pFile->Get("esdTree");
1076   if(!pTree){AliInfo("ESD not found.");return;}                               //get ESD tree
1077
1078 //  AliInfo("ESD found. Try to draw ring");
1079
1080   AliESD *pESD=new AliESD;  pTree->SetBranchAddress("ESD", &pESD);
1081
1082   pTree->GetEvent(iEventN);
1083
1084   Double_t b = pESD->GetMagneticField()/10.;
1085
1086   Int_t iNtracks=pESD->GetNumberOfTracks();
1087
1088   for(Int_t iTrackN=0;iTrackN<iNtracks;iTrackN++){//ESD tracks loop
1089     AliESDtrack *pTrack = pESD->GetTrack(iTrackN);// get next reconstructed track
1090     Int_t iChTrack = pTrack->GetRICHcluster()/100000;
1091     if(iChTrack==iChamber) {
1092       if(pTrack->GetRICHsignal()<0) continue;
1093       Int_t charge = (Int_t)(-TMath::Sign(1.,pTrack->GetSign()*b));
1094       AliRICHHelix helix(pTrack->X3(),pTrack->P3(),charge,b);
1095       helix.RichIntersect(P());
1096       TVector3 entrance(helix.PosRad().X(),helix.PosRad().Y(),0);
1097       Double_t thetaTrack,phiTrack;
1098       pTrack->GetRICHthetaPhi(thetaTrack,phiTrack);
1099       TVector3 vectorTrack;
1100       vectorTrack.SetMagThetaPhi(pTrack->GetP(),thetaTrack,phiTrack);
1101 //      vectorTrack.SetMagThetaPhi(pTrack->GetP(),thetaTrack,1.5*TMath::Pi());
1102 //      AliInfo("Draw ring started");
1103       DrawRing(entrance,vectorTrack,pTrack->GetRICHsignal());
1104     }
1105   }
1106   delete pESD;  pFile->Close();//close AliESDs.root
1107 }
1108 //__________________________________________________________________________________________________
1109 void AliRICH::DrawRing(TVector3 entrance,TVector3 vectorTrack,Double_t thetaCer)const
1110 {
1111   Double_t xGraph[100],yGraph[100];
1112   Int_t nPointsToDraw = 0;
1113   for(Int_t i=0;i<100;i++) {
1114     Double_t phiCer = 2*TMath::Pi()*i/100;
1115     TVector3 pos = AliRICHParam::ForwardTracing(entrance,vectorTrack,thetaCer,phiCer);
1116     if(pos.X()==-999.) continue;
1117     xGraph[nPointsToDraw] = pos.X();yGraph[nPointsToDraw] = pos.Y();nPointsToDraw++;
1118   }
1119 //  AliInfo(Form("Npoints per ring %i",nPointsToDraw));
1120   TGraph *gra = new TGraph(nPointsToDraw,xGraph,yGraph);
1121   gra->Draw("C");
1122 }