RICH/AliRICH.h

   1 #ifndef AliRICH_h
   2 #define AliRICH_h
   3
   4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   5  * See cxx source for full Copyright notice                               */
   6
   7 #include <TObjArray.h>
   8 #include <TClonesArray.h>
   9 #include <TVector3.h>
  10 #include <Riostream.h>
  11 #include <AliDetector.h>
  12 #include <AliHit.h>
  13 #include <AliDigit.h>
  14 #include "AliRICHDigitizer.h"
  15 #include "AliRICHParam.h"
  16
  17 //__________________AliRICHhit______________________________________________________________________
  18 class AliRICHhit : public AliHit
  19 {
  20 public:
  21            AliRICHhit():AliHit(),fChamber(kBad),fEloss(kBad) {fInX3.SetXYZ(0,0,0);fOutX3.SetXYZ(0,0,0);}
  22            AliRICHhit(Int_t c,Int_t tid,TVector3 in,TVector3 out,Double_t e):AliHit(0,tid)
  23                                           {fChamber=c;fInX3=in; fOutX3=out;fEloss=e; fX=out.X();fY=out.Y();fZ=out.Z();}
  24   virtual ~AliRICHhit()                   {;}
  25
  26   Int_t    C()                       const{return fChamber;}              //chamber number
  27   Int_t    Chamber()                 const{return fChamber;}              //chamber number
  28   Float_t  Eloss()                   const{return fEloss;}                //energy lost by track inside amplification gap
  29   TVector3 InX3()                    const{return fInX3;}                 //track position at the faceplane of the gap
  30   TVector3 OutX3()                   const{return fOutX3;}                //track position at the backplane of the gap
  31   Double_t Length()                  const{return (fOutX3-fInX3).Mag();}  //track length inside the amplification gap
  32   void     Print(Option_t *option="")const;                               //virtual
  33 protected:
  34   Int_t     fChamber;                      //chamber number
  35   Double_t  fEloss;                        //ionisation energy lost in GAP
  36   TVector3  fInX3;                         //position at the entrance of the GAP
  37   TVector3  fOutX3;                        //position at the exit of the GAP
  38   ClassDef(AliRICHhit,2)                   //RICH hit class
  39 };//class AliRICHhit
  40
  41 //__________________AliRICHdigit____________________________________________________________________
  42 class AliRICHdigit :public AliDigit
  43 {
  44 public:
  45   AliRICHdigit():AliDigit(),fCFM(0),fChamber(0),fPadX(0),fPadY(0),fQdc(kBad){fTracks[0]=fTracks[1]=fTracks[2]=kBad;}
  46   AliRICHdigit(Int_t c,TVector pad,Double_t q,Int_t cfm,Int_t tid0,Int_t tid1,Int_t tid2)
  47        {fPadX=(Int_t)pad[0];fPadY=(Int_t)pad[1];fQdc=q;fChamber=10*c+AliRICHParam::Pad2Sec(pad);fCFM=cfm;fTracks[0]=tid0;fTracks[1]=tid1;fTracks[2]=tid2;}
  48   virtual ~AliRICHdigit() {;}
  49   Int_t    Compare(const TObject *pObj) const
  50                  {if(Id()==((AliRICHdigit*)pObj)->Id())return 0;else if(Id()>((AliRICHdigit*)pObj)->Id())return 1;else return -1;}  //virtual
  51   virtual Bool_t   IsSortable()                 const{return kTRUE;}                              //sort interface
  52   virtual void     Print(Option_t *option="")   const;                                            //virtual
  53   Int_t    ChFbMi()                     const{return fCFM;}                               //particle mixture for this digit
  54   Int_t    C()                          const{return fChamber/10;}                        //chamber number
  55   Int_t    S()                          const{return fChamber-(fChamber/10)*10;}          //sector number
  56   Int_t    X()                          const{return fPadX;}                              //x position of the pad
  57   Int_t    Y()                          const{return fPadY;}                              //y postion of the pad
  58   TVector  Pad()                        const{Float_t v[2]={fPadX,fPadY}; return TVector(2,v);}
  59   Int_t    Id()                         const{return fChamber*10000000+fPadX*1000+fPadY;} //absolute id of this pad
  60   Double_t Q()                          const{return fQdc;}                               //charge in terms of ADC channels
  61   void     AddTidOffset(Int_t offset)
  62     {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset;};
  63 protected:
  64   Int_t    fCFM;  //1000000*Ncerenkovs+1000*Nfeedbacks+Nmips
  65   Int_t    fChamber;  //10*chamber number+ sector number
  66   Int_t    fPadX;     //pad number along X
  67   Int_t    fPadY;     //pad number along Y
  68   Double_t fQdc;      //QDC value, fractions are permitted for summable procedure
  69   ClassDef(AliRICHdigit,3) //RICH digit class
  70 };//class AliRICHdigit
  71
  72 //__________________AliRICHcluster__________________________________________________________________
  73 class AliRICHcluster :public TObject
  74 {
  75 public:
  76   enum ClusterStatus {kEdge,kShape,kSize,kRaw,kResolved,kEmpty=kBad};
  77                     AliRICHcluster():TObject(),fCFM(0),fSize(0),fShape(0),fQdc(0),fChamber(0),fX(0),fY(0),fStatus(kEmpty),fDigits(0) {}
  78   virtual          ~AliRICHcluster()                 {Reset();}
  79          void       Reset()                          {DeleteDigits();fCFM=fSize=fShape=fQdc=fChamber=0;fX=fY=0;fStatus=kEmpty;} //cleans the cluster
  80          void       DeleteDigits()                   {if(fDigits) delete fDigits; fDigits=0;}           //deletes the list of digits
  81   AliRICHcluster&   operator=(const AliRICHcluster&) {return *this;}
  82          Int_t      Nlocals()                   const{return fSize-10000*(fSize/10000);}                //number of local maximums
  83          Int_t      Size()                      const{return fSize/10000;}                              //number of digits in cluster
  84          Int_t      Fsize()                     const{return fSize;}                                    //
  85          Int_t      Shape()                     const{return fShape;}                                   //cluster shape rectangulare
  86          Int_t      C()                         const{return fChamber/10;}                              //chamber number
  87          Int_t      S()                         const{return fChamber-(fChamber/10)*10;}                //sector number
  88          Int_t      Fchamber()                  const{return fChamber;}                                 //
  89          Int_t      Q()                         const{return fQdc;}                                     //cluster charge in QDC channels
  90          Double_t   X()                         const{return fX;}                                       //cluster x position in LRS
  91          Double_t   Y()                         const{return fY;}                                       //cluster y position in LRS
  92          Int_t      Status()                    const{return fStatus;}                                  //
  93          void       SetStatus(Int_t status)         {fStatus=status;}                                     //
  94          Int_t      Nmips()                     const{return fCFM-1000000*Ncerenkovs()-1000*Nfeedbacks();} //
  95          Int_t      Ncerenkovs()                const{return fCFM/1000000;}                                //
  96          Int_t      Nfeedbacks()                const{return (fCFM-1000000*Ncerenkovs())/1000;}            //
  97          Bool_t     IsPureMip()                 const{return fCFM<1000;}                                   //
  98          Bool_t     IsPureCerenkov()            const{return Nmips()==0&&Nfeedbacks()==0;}                 //
  99          Bool_t     IsPureFeedback()            const{return Nmips()==0&&Ncerenkovs()==0;}                 //
 100          Bool_t     IsSingleMip()               const{return Nmips()==1&&Ncerenkovs()==0&&Nfeedbacks()==0;}  //
 101          Bool_t     IsSingleCerenkov()          const{return Nmips()==0&&Ncerenkovs()==1&&Nfeedbacks()==0;}  //
 102          Bool_t     IsSingleFeedback()          const{return Nmips()==0&&Ncerenkovs()==0&&Nfeedbacks()==1;}  //
 103          Bool_t     IsMip()                     const{return Nmips()!=0;}                                  //
 104          Bool_t     IsCerenkov()                const{return Ncerenkovs()!=0;}                             //
 105          Bool_t     IsFeedback()                const{return Nfeedbacks()!=0;}                             //
 106          Int_t      CombiPid()                  const{return fCFM;}                                        //
 107          void       CFM(Int_t c,Int_t f,Int_t m)     {fCFM=1000000*c+1000*f+m;}                            //cluster contributors
 108          TObjArray* Digits()                    const{return fDigits;}                                     //
 109   virtual void      Print(Option_t *option="")const;                                                                //
 110   inline  void      AddDigit(AliRICHdigit *pDig);                                                                   //
 111   inline  void      CoG(Int_t nLocals);                                                                             //calculates center of gravity
 112           void      Fill(AliRICHcluster *pRaw,Double_t x,Double_t y,Double_t q,Int_t cfm)                           //form new resolved cluster from raw one
 113                     {fCFM=cfm;fChamber=pRaw->Fchamber();fSize=pRaw->Fsize();fQdc=(Int_t)(q*pRaw->Q());fX=x;fY=y;fStatus=kResolved;} //
 114 protected:
 115   Int_t         fCFM;         //1000000*Ncerenkovs+1000*Nfeedbacks+Nmips
 116   Int_t         fSize;        //10000*(how many digits belong to this cluster) + nLocalMaxima
 117   Int_t         fShape;       //100*xdim+ydim box containing the cluster
 118   Int_t         fQdc;         //QDC value
 119   Int_t         fChamber;     //10*module number+sector number
 120   Double_t      fX;           //local x postion
 121   Double_t      fY;           //local y postion
 122   Int_t         fStatus;      //flag to mark the quality of the cluster
 123   TObjArray    *fDigits;      //! list of digits forming this cluster
 124   ClassDef(AliRICHcluster,2)  //RICH cluster class
 125 };//class AliRICHcluster
 126 //__________________________________________________________________________________________________
 127 void AliRICHcluster::AddDigit(AliRICHdigit *pDig)
 128 {
 129 // Adds a given digit to the list of digits belonging to this cluster
 130   if(!fDigits) {fQdc=fSize=fCFM=0;fDigits = new TObjArray;}
 131   fQdc+=(Int_t)pDig->Q(); fDigits->Add(pDig);
 132   fChamber=10*pDig->C()+pDig->S();
 133   fSize+=10000;
 134   fStatus=kRaw;
 135 }
 136 //__________________________________________________________________________________________________
 137 void AliRICHcluster::CoG(Int_t nLocals)
 138 {
 139 // Calculates naive cluster position as a center of gravity of its digits.
 140   Float_t xmin=999,ymin=999,xmax=0,ymax=0;
 141   fX=fY=0;
 142   for(Int_t iDig=0;iDig<Size();iDig++) {
 143     AliRICHdigit *pDig=(AliRICHdigit*)fDigits->At(iDig);
 144     TVector pad=pDig->Pad(); Double_t q=pDig->Q();
 145     TVector2 x2=AliRICHParam::Pad2Loc(pad);
 146     fX += x2.X()*q;fY +=x2.Y()*q;
 147     if(pad[0]<xmin)xmin=pad[0];if(pad[0]>xmax)xmax=pad[0];if(pad[1]<ymin)ymin=pad[1];if(pad[1]>ymax)ymax=pad[1];
 148    }
 149    fX/=fQdc;fY/=fQdc;//Center of Gravity
 150    fShape=Int_t(100*(xmax-xmin+1)+ymax-ymin+1);//find box containing cluster
 151    fSize+=nLocals;
 152    fStatus=kRaw;
 153 }//CoG()
 154
 155 //__________________AliRICH_________________________________________________________________________
 156 class AliESD;
 157
 158 class AliRICH : public AliDetector
 159 {
 160 public:
 161             AliRICH();
 162             AliRICH(const char *name, const char *title);
 163             AliRICH(const AliRICH& RICH):AliDetector(RICH) {;}  //copy ctor
 164   virtual  ~AliRICH();
 165
 166   AliRICH&  operator=(const AliRICH&)                 {return *this;}
 167 //framework part
 168   virtual Int_t         IsVersion()                           const =0;                                  //interface from
 169   virtual void          StepManager()                               =0;                                  //interface from AliMC
 170   virtual void          Hits2SDigits();                                                                  //interface from AliSimulation
 171   virtual AliDigitizer* CreateDigitizer(AliRunDigitizer* man) const {return new AliRICHDigitizer(man);}  //interface from AliSimulation
 172   virtual void          Reconstruct()                         const;                                     //interface from AliReconstruction
 173   virtual void          FillESD(AliESD *pESD)                 const;                                     //interface from AliReconstruction
 174   virtual void          Print(Option_t *option)               const;                                     //prints current RICH status
 175   virtual void          SetTreeAddress();                                                                //interface from AliLoader
 176   virtual void          MakeBranch(Option_t *opt=" ");                                                   //interface from AliLoader
 177   virtual void          CreateMaterials();                                                               //interface from AliMC
 178   virtual void          CreateGeometry();                                                                //interface from AliMC
 179   virtual void          BuildGeometry();                                                                 //interface
 180 //private part
 181           Float_t AbsoCH4(Float_t x)const;                               //calculates absorption length for methane
 182           Float_t Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)const;  //deals with Fresnel absorption
 183   inline  void    CreateHits();                                          //create hits container as a simple list
 184   inline  void    CreateSDigits();                                       //create sdigits container as a simple list
 185   inline  void    CreateDigits();                                        //create digits container as 7 lists, one per chamber
 186   inline  void    CreateClusters();                                      //create clusters container  as 7 lists, one per chamber
 187 //        void    ResetHits()                {AliDetector::ResetHits();}  //virtual
 188           void    ResetSDigits()             {fNsdigits=0;  if(fSdigits)  fSdigits ->Clear();}
 189           void    ResetDigits()              {if(fDigitsNew)for(int i=0;i<kNchambers;i++){fDigitsNew->At(i)->Clear();fNdigitsNew[i]=0;}} //virtual
 190           void    ResetClusters()            {if(fClusters) for(int i=0;i<kNchambers;i++){fClusters ->At(i)->Clear();fNclusters[i]=0;}}
 191   TClonesArray*   SDigits()             const{return fSdigits;}
 192   TClonesArray*   Digits(Int_t iC)      const{if(fDigitsNew) return (TClonesArray *)fDigitsNew->At(iC-1);else return 0;}
 193   TClonesArray*   Clusters(Int_t iC)    const{if(fClusters)  return (TClonesArray *)fClusters->At(iC-1);else return 0;}
 194   AliRICHChamber* C(Int_t iC)           const{return fpParam->C(iC);}                       //provides pointer to a given chamber
 195   AliRICHParam*   P()                   const{return fpParam;}                              //provides pointer to a RICH params
 196   AliRICH*        R()                        {return this;}                                 //provides pointer to RICH main object
 197   TVector         Counters()            const{return fCounters;}                            //provides a set of counters
 198   void            ControlPlots();                                                           //utility
 199   void            PrintHits    (Int_t iEvent=0);                                            //utility
 200   void            PrintSDigits (Int_t iEvent=0);                                            //utility
 201   void            PrintDigits  (Int_t iEvent=0);                                            //utility
 202   void            PrintClusters(Int_t iEvent=0);                                            //utility
 203
 204   void AddHit(Int_t c,Int_t tid,TVector3 i3,TVector3 o3,Double_t eloss=0){TClonesArray &tmp=*fHits;new(tmp[fNhits++])AliRICHhit(c,tid,i3,o3,eloss);}
 205   inline void AddSDigit(Int_t c,TVector pad,Double_t q,Int_t pid,Int_t tid);
 206   void AddDigit(int c,TVector pad,int q,int cfm,int *tid)//Add simulated digit
 207        {TClonesArray &tmp=*((TClonesArray*)fDigitsNew->At(c-1));new(tmp[fNdigitsNew[c-1]++])AliRICHdigit(c,pad,q,cfm,tid[0],tid[1],tid[2]);}
 208   void AddDigit(Int_t c,TVector pad,Int_t q)//for real data digits
 209        {TClonesArray &tmp=*((TClonesArray*)fDigitsNew->At(0));new(tmp[fNdigitsNew[0]++])AliRICHdigit(c,pad,q,0,-1,-1,-1);}
 210   void AddCluster(AliRICHcluster &cl)
 211        {Int_t c=cl.C()-1;TClonesArray &tmp=*((TClonesArray*)fClusters->At(c));new(tmp[fNclusters[c]++])AliRICHcluster(cl);}
 212   AliRICHhit* Hit(Int_t tid);           //returns pointer ot RICH hit for a given tid
 213 protected:
 214   enum                  {kAir=1,kCSI=6,kGAP=9,kAl=10,kCH4=5,kSteel=15,kPerpex=16,kSr90=17};
 215   AliRICHParam         *fpParam;             //main RICH parametrization
 216                                              //fHits and fDigits belong to AliDetector
 217   TClonesArray         *fSdigits;            //! list of sdigits
 218   Int_t                 fNsdigits;           //! current number of sdigits
 219
 220   TObjArray            *fDigitsNew;          //! each chamber holds it's one lists of digits
 221   Int_t                 fNdigitsNew[kNchambers];   //! array of current numbers of digits
 222
 223   TObjArray            *fClusters;           //! each chamber holds it's one lists of clusters
 224   Int_t                 fNclusters[kNchambers];    //! array of current numbers of raw clusters
 225
 226   TVector               fCounters;           //Photon history conters, explanation in StepManager()
 227   ClassDef(AliRICH,7)                        //Main RICH class
 228 };//class AliRICH
 229
 230 //__________________________________________________________________________________________________
 231 void AliRICH::CreateHits()
 232 {
 233   if(fHits) return;
 234   if(GetDebug())Info("CreateHits","creating hits container.");
 235   fHits=new TClonesArray("AliRICHhit",10000);   fNhits=0;
 236 }
 237 //__________________________________________________________________________________________________
 238 void AliRICH::CreateSDigits()
 239 {
 240   if(fSdigits) return;
 241   if(GetDebug())Info("CreateSDigits","creating sdigits container.");
 242   fSdigits=new TClonesArray("AliRICHdigit",10000); fNsdigits=0;
 243 }
 244 //__________________________________________________________________________________________________
 245 void AliRICH::CreateDigits()
 246 {
 247   if(fDigitsNew) return;
 248   if(GetDebug())Info("CreateDigits","creating digits containers.");
 249   fDigitsNew = new TObjArray(kNchambers);
 250   for(Int_t i=0;i<kNchambers;i++) {fDigitsNew->AddAt(new TClonesArray("AliRICHdigit",10000), i); fNdigitsNew[i]=0;}
 251 }
 252 //__________________________________________________________________________________________________
 253 void AliRICH::CreateClusters()
 254 {
 255   if(fClusters) return;
 256   if(GetDebug())Info("CreateClusters","creating clusters containers.");
 257   fClusters = new TObjArray(kNchambers);
 258   for(Int_t i=0;i<kNchambers;i++) {fClusters->AddAt(new TClonesArray("AliRICHcluster",10000), i); fNclusters[i]=0;}
 259 }
 260 //__________________________________________________________________________________________________
 261 void AliRICH::AddSDigit(Int_t c,TVector pad,Double_t q,Int_t pid,Int_t tid)
 262 {
 263   Int_t cfm;
 264   switch(pid){
 265     case 50000050: cfm=1000000;break;//cerenkov
 266     case 50000051: cfm=1000;   break;//feedback
 267     default:       cfm=1;      break;//mip
 268   }
 269   TClonesArray &tmp=*fSdigits; new(tmp[fNsdigits++])AliRICHdigit(c,pad,q,cfm,tid,kBad,kBad);
 270 }
 271 //__________________________________________________________________________________________________
 272 #endif//#ifndef AliRICH_h