4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
8 #include <TClonesArray.h>
13 #include "AliRICHDigitizer.h"
14 #include "AliRICHParam.h"
15 #include <AliDetector.h>
19 //__________________AliRICHhit______________________________________________________________________
20 class AliRICHhit : public AliHit
23 AliRICHhit():AliHit(),fChamber(kBad),fEloss(kBad) {fInX3.SetXYZ(0,0,0);fOutX3.SetXYZ(0,0,0);}
24 AliRICHhit(Int_t c,Int_t tid,TVector3 in,TVector3 out,Double_t e):AliHit(0,tid)
25 {fChamber=c;fInX3=in; fOutX3=out;fEloss=e; fX=out.X();fY=out.Y();fZ=out.Z();}
26 virtual ~AliRICHhit() {;}
28 Int_t C() const{return fChamber;} //chamber number
29 Int_t Chamber() const{return fChamber;} //chamber number
30 Float_t Eloss() const{return fEloss;} //energy lost by track inside amplification gap
31 TVector3 InX3() const{return fInX3;} //track position at the faceplane of the gap
32 TVector3 OutX3() const{return fOutX3;} //track position at the backplane of the gap
33 Double_t Length() const{return (fOutX3-fInX3).Mag();} //track length inside the amplification gap
34 void Print(Option_t *option="")const; //virtual
36 Int_t fChamber; //chamber number
37 Double_t fEloss; //ionisation energy lost in GAP
38 TVector3 fInX3; //position at the entrance of the GAP
39 TVector3 fOutX3; //position at the exit of the GAP
40 ClassDef(AliRICHhit,2) //RICH hit class
43 //__________________AliRICHdigit____________________________________________________________________
44 class AliRICHdigit :public AliDigit
47 AliRICHdigit():AliDigit(),fCFM(0),fChamber(0),fPadX(0),fPadY(0),fQdc(kBad){fTracks[0]=fTracks[1]=fTracks[2]=kBad;}
48 AliRICHdigit(Int_t c,TVector pad,Double_t q,Int_t cfm,Int_t tid0,Int_t tid1,Int_t tid2)
49 {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;}
50 virtual ~AliRICHdigit() {;}
51 Int_t Compare(const TObject *pObj) const
52 {if(Id()==((AliRICHdigit*)pObj)->Id())return 0;else if(Id()>((AliRICHdigit*)pObj)->Id())return 1;else return -1;} //virtual
53 virtual Bool_t IsSortable() const{return kTRUE;} //sort interface
54 virtual void Print(Option_t *option="") const; //virtual
55 Int_t ChFbMi() const{return fCFM;} //particle mixture for this digit
56 Int_t C() const{return fChamber/10;} //chamber number
57 Int_t S() const{return fChamber-(fChamber/10)*10;} //sector number
58 Int_t X() const{return fPadX;} //x position of the pad
59 Int_t Y() const{return fPadY;} //y postion of the pad
60 TVector Pad() const{Float_t v[2]={fPadX,fPadY}; return TVector(2,v);}
61 Int_t Id() const{return fChamber*10000000+fPadX*1000+fPadY;} //absolute id of this pad
62 Double_t Q() const{return fQdc;} //charge in terms of ADC channels
63 void AddTidOffset(Int_t offset)
64 {for (Int_t i=0; i<3; i++) if (fTracks[i]>0) fTracks[i]+=offset;};
66 Int_t fCFM; //1000000*Ncerenkovs+1000*Nfeedbacks+Nmips
67 Int_t fChamber; //10*chamber number+ sector number
68 Int_t fPadX; //pad number along X
69 Int_t fPadY; //pad number along Y
70 Double_t fQdc; //QDC value, fractions are permitted for summable procedure
71 ClassDef(AliRICHdigit,3) //RICH digit class
72 };//class AliRICHdigit
74 //__________________AliRICHcluster__________________________________________________________________
75 class AliRICHcluster :public TObject
78 enum ClusterStatus {kEdge,kShape,kSize,kRaw,kResolved,kEmpty=kBad};
79 AliRICHcluster():TObject(),fCFM(0),fSize(0),fShape(0),fQdc(0),fChamber(0),fX(0),fY(0),fStatus(kEmpty),fDigits(0) {}
80 virtual ~AliRICHcluster() {AliDebug(1,"Start");/*Reset();*/}
81 void Reset() {DeleteDigits();fCFM=fSize=fShape=fQdc=fChamber=0;fX=fY=0;fStatus=kEmpty;} //cleans the cluster
82 void DeleteDigits() {if(fDigits) {delete fDigits;} fDigits=0;} //deletes the list of digits
83 AliRICHcluster& operator=(const AliRICHcluster&) {return *this;}
84 Int_t Nlocals() const{return fSize-10000*(fSize/10000);} //number of local maximums
85 Int_t Size() const{return fSize/10000;} //number of digits in cluster
86 Int_t Fsize() const{return fSize;} //
87 Int_t Shape() const{return fShape;} //cluster shape rectangulare
88 Int_t C() const{return fChamber/10;} //chamber number
89 Int_t S() const{return fChamber-(fChamber/10)*10;} //sector number
90 Int_t Fchamber() const{return fChamber;} //
91 Int_t Q() const{return fQdc;} //cluster charge in QDC channels
92 Double_t X() const{return fX;} //cluster x position in LRS
93 Double_t Y() const{return fY;} //cluster y position in LRS
94 Int_t Status() const{return fStatus;} //
95 void SetStatus(Int_t status) {fStatus=status;} //
96 Int_t Nmips() const{return fCFM-1000000*Ncerenkovs()-1000*Nfeedbacks();} //
97 Int_t Ncerenkovs() const{return fCFM/1000000;} //
98 Int_t Nfeedbacks() const{return (fCFM-1000000*Ncerenkovs())/1000;} //
99 Bool_t IsPureMip() const{return fCFM<1000;} //
100 Bool_t IsPureCerenkov() const{return Nmips()==0&&Nfeedbacks()==0;} //
101 Bool_t IsPureFeedback() const{return Nmips()==0&&Ncerenkovs()==0;} //
102 Bool_t IsSingleMip() const{return Nmips()==1&&Ncerenkovs()==0&&Nfeedbacks()==0;} //
103 Bool_t IsSingleCerenkov() const{return Nmips()==0&&Ncerenkovs()==1&&Nfeedbacks()==0;} //
104 Bool_t IsSingleFeedback() const{return Nmips()==0&&Ncerenkovs()==0&&Nfeedbacks()==1;} //
105 Bool_t IsMip() const{return Nmips()!=0;} //
106 Bool_t IsCerenkov() const{return Ncerenkovs()!=0;} //
107 Bool_t IsFeedback() const{return Nfeedbacks()!=0;} //
108 Int_t CombiPid() const{return fCFM;} //
109 void CFM(Int_t c,Int_t f,Int_t m) {fCFM=1000000*c+1000*f+m;} //cluster contributors
110 TObjArray* Digits() const{return fDigits;} //
111 virtual void Print(Option_t *option="")const; //
112 inline void AddDigit(AliRICHdigit *pDig); //
113 inline void CoG(Int_t nLocals); //calculates center of gravity
114 void Fill(AliRICHcluster *pRaw,Double_t x,Double_t y,Double_t q,Int_t cfm) //form new resolved cluster from raw one
115 {fCFM=cfm;fChamber=pRaw->Fchamber();fSize=pRaw->Fsize();fQdc=(Int_t)(q*pRaw->Q());fX=x;fY=y;fStatus=kResolved;}
116 Double_t DistTo(TVector2 x) const{return TMath::Sqrt((x.X()-fX)*(x.X()-fX)+(x.Y()-fY)*(x.Y()-fY));} //distance to given point
118 Int_t fCFM; //1000000*Ncerenkovs+1000*Nfeedbacks+Nmips
119 Int_t fSize; //10000*(how many digits belong to this cluster) + nLocalMaxima
120 Int_t fShape; //100*xdim+ydim box containing the cluster
121 Int_t fQdc; //QDC value
122 Int_t fChamber; //10*module number+sector number
123 Double_t fX; //local x postion
124 Double_t fY; //local y postion
125 Int_t fStatus; //flag to mark the quality of the cluster
126 TObjArray *fDigits; //! list of digits forming this cluster
127 ClassDef(AliRICHcluster,2) //RICH cluster class
128 };//class AliRICHcluster
129 //__________________________________________________________________________________________________
130 void AliRICHcluster::AddDigit(AliRICHdigit *pDig)
132 // Adds a given digit to the list of digits belonging to this cluster
133 if(!fDigits) {fQdc=fSize=fCFM=0;fDigits = new TObjArray;}
134 fQdc+=(Int_t)pDig->Q(); fDigits->Add(pDig);
135 fChamber=10*pDig->C()+pDig->S();
139 //__________________________________________________________________________________________________
140 void AliRICHcluster::CoG(Int_t nLocals)
142 // Calculates naive cluster position as a center of gravity of its digits.
143 Float_t xmin=999,ymin=999,xmax=0,ymax=0;
145 for(Int_t iDig=0;iDig<Size();iDig++) {
146 AliRICHdigit *pDig=(AliRICHdigit*)fDigits->At(iDig);
147 TVector pad=pDig->Pad(); Double_t q=pDig->Q();
148 TVector2 x2=AliRICHParam::Pad2Loc(pad);
149 fX += x2.X()*q;fY +=x2.Y()*q;
150 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];
152 fX/=fQdc;fY/=fQdc;//Center of Gravity
153 fShape=Int_t(100*(xmax-xmin+1)+ymax-ymin+1);//find box containing cluster
158 //__________________AliRICH_________________________________________________________________________
161 class AliRICH : public AliDetector
165 AliRICH(const char *name, const char *title);
166 AliRICH(const AliRICH& RICH):AliDetector(RICH) {;} //copy ctor
169 AliRICH& operator=(const AliRICH&) {return *this;}
171 virtual Int_t IsVersion() const =0; //interface from
172 virtual void StepManager() =0; //interface from AliMC
173 virtual void Hits2SDigits(); //interface from AliSimulation
174 virtual AliDigitizer* CreateDigitizer(AliRunDigitizer* man) const {return new AliRICHDigitizer(man);} //interface from AliSimulation
175 // virtual void Reconstruct() const; //interface from AliReconstruction
176 // virtual void FillESD(AliESD *pESD) const; //interface from AliReconstruction
177 virtual void SetTreeAddress(); //interface from AliLoader
178 virtual void MakeBranch(Option_t *opt=" "); //interface from AliLoader
179 virtual void CreateMaterials(); //interface from AliMC
180 virtual void CreateGeometry(); //interface from AliMC
181 virtual void BuildGeometry(); //interface
183 Float_t AbsoCH4(Float_t x)const; //calculates absorption length for methane
184 Float_t Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)const; //deals with Fresnel absorption
185 inline void CreateHits(); //create hits container as a simple list
186 inline void CreateSDigits(); //create sdigits container as a simple list
187 inline void CreateDigits(); //create digits container as 7 lists, one per chamber
188 inline void CreateClusters(); //create clusters container as 7 lists, one per chamber
189 // void ResetHits() {AliDetector::ResetHits();} //virtual
190 void ResetSDigits() {fNsdigits=0; if(fSdigits) fSdigits ->Clear();}
191 void ResetDigits() {if(fDigitsNew)for(int i=0;i<kNchambers;i++){fDigitsNew->At(i)->Clear();fNdigitsNew[i]=0;}} //virtual
192 void ResetClusters() {if(fClusters) for(int i=0;i<kNchambers;i++){fClusters ->At(i)->Clear();fNclusters[i]=0;}}
193 TClonesArray* SDigits() const{return fSdigits;}
194 TClonesArray* Digits(Int_t iC) const{if(fDigitsNew) return (TClonesArray *)fDigitsNew->At(iC-1);else return 0;}
195 TClonesArray* Clusters(Int_t iC) const{if(fClusters) return (TClonesArray *)fClusters->At(iC-1);else return 0;}
196 AliRICHChamber* C(Int_t iC) const{return fpParam->C(iC);} //provides pointer to a given chamber
197 AliRICHParam* P() const{return fpParam;} //provides pointer to a RICH params
198 AliRICH* R() {return this;} //provides pointer to RICH main object
199 TVector Counters() const{return fCounters;} //provides a set of counters
200 void ControlPlots(); //utility
201 virtual void Print(Option_t *option="") const; //prints current RICH status
202 void PrintHits (Int_t iEvent=0); //utility
203 void PrintSDigits (Int_t iEvent=0); //utility
204 void PrintDigits (Int_t iEvent=0); //utility
205 void PrintClusters(Int_t iEvent=0); //utility
206 void PrintTracks (Int_t iEvent=0); //utility
208 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);}
209 inline void AddSDigit(Int_t c,TVector pad,Double_t q,Int_t pid,Int_t tid);
210 void AddDigit(int c,TVector pad,int q,int cfm,int *tid)//Add simulated digit
211 {TClonesArray &tmp=*((TClonesArray*)fDigitsNew->At(c-1));new(tmp[fNdigitsNew[c-1]++])AliRICHdigit(c,pad,q,cfm,tid[0],tid[1],tid[2]);}
212 void AddDigit(Int_t c,TVector pad,Int_t q)//for real data digits
213 {TClonesArray &tmp=*((TClonesArray*)fDigitsNew->At(0));new(tmp[fNdigitsNew[0]++])AliRICHdigit(c,pad,q,0,-1,-1,-1);}
214 void AddCluster(AliRICHcluster &cl)
215 {Int_t c=cl.C()-1;TClonesArray &tmp=*((TClonesArray*)fClusters->At(c));new(tmp[fNclusters[c]++])AliRICHcluster(cl);}
216 AliRICHhit* Hit(Int_t tid); //returns pointer ot RICH hit for a given tid
218 enum {kAir=1,kRoha,kSiO2,kC6F14,kCH4,kCsI,kGridCu,kOpSiO2,kGap,kAl,kGlass,kCu,kW,kSteel,kPerpex,kSr90};
219 AliRICHParam *fpParam; //main RICH parametrization
220 //fHits and fDigits belong to AliDetector
221 TClonesArray *fSdigits; //! list of sdigits
222 Int_t fNsdigits; //! current number of sdigits
224 TObjArray *fDigitsNew; //! each chamber holds it's one lists of digits
225 Int_t fNdigitsNew[kNchambers]; //! array of current numbers of digits
227 TObjArray *fClusters; //! each chamber holds it's one lists of clusters
228 Int_t fNclusters[kNchambers]; //! array of current numbers of raw clusters
230 TVector fCounters; //Photon history conters, explanation in StepManager()
231 ClassDef(AliRICH,7) //Main RICH class
234 //__________________________________________________________________________________________________
235 void AliRICH::CreateHits()
238 AliDebug(1,"creating hits container.");
239 fHits=new TClonesArray("AliRICHhit",10000); fNhits=0;
241 //__________________________________________________________________________________________________
242 void AliRICH::CreateSDigits()
245 AliDebug(1,"creating sdigits container.");
246 fSdigits=new TClonesArray("AliRICHdigit",10000); fNsdigits=0;
248 //__________________________________________________________________________________________________
249 void AliRICH::CreateDigits()
251 if(fDigitsNew) return;
252 AliDebug(1,"creating digits containers.");
253 fDigitsNew = new TObjArray(kNchambers);
254 for(Int_t i=0;i<kNchambers;i++) {fDigitsNew->AddAt(new TClonesArray("AliRICHdigit",10000), i); fNdigitsNew[i]=0;}
256 //__________________________________________________________________________________________________
257 void AliRICH::CreateClusters()
259 if(fClusters) return;
260 AliDebug(1,"creating clusters containers.");
261 fClusters = new TObjArray(kNchambers);
262 for(Int_t i=0;i<kNchambers;i++) {fClusters->AddAt(new TClonesArray("AliRICHcluster",10000), i); fNclusters[i]=0;}
264 //__________________________________________________________________________________________________
265 void AliRICH::AddSDigit(Int_t c,TVector pad,Double_t q,Int_t pid,Int_t tid)
269 case 50000050: cfm=1000000;break;//cerenkov
270 case 50000051: cfm=1000; break;//feedback
271 default: cfm=1; break;//mip
273 TClonesArray &tmp=*fSdigits; new(tmp[fNsdigits++])AliRICHdigit(c,pad,q,cfm,tid,kBad,kBad);
275 //__________________________________________________________________________________________________
276 #endif//#ifndef AliRICH_h