1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
16 // HMPID base class to reconstruct an event
20 #include "AliHMPIDReconstructor.h" //class header
21 #include "AliHMPID.h" //Reconstruct()
22 #include "AliHMPIDCluster.h" //Dig2Clu()
23 #include "AliHMPIDParam.h" //FillEsd()
24 #include <AliCDBEntry.h> //ctor
25 #include <AliCDBManager.h> //ctor
26 #include <AliESD.h> //FillEsd()
27 #include <AliRawReader.h> //Reconstruct() for raw digits
28 ClassImp(AliHMPIDReconstructor)
30 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
31 AliHMPIDReconstructor::AliHMPIDReconstructor():AliReconstructor(),fUserCut(0),fDaqSig(0),fDig(0),fClu(0)
37 fClu=new TObjArray(AliHMPIDDigit::kMaxCh+1); fClu->SetOwner(kTRUE);
38 fDig=new TObjArray(AliHMPIDDigit::kMaxCh+1); fDig->SetOwner(kTRUE);
40 for(int i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++){
41 fDig->AddAt(new TClonesArray("AliHMPIDDigit"),i);
42 TClonesArray *pClus = new TClonesArray("AliHMPIDCluster");
43 pClus->SetUniqueID(i);
47 AliCDBEntry *pUserCutEnt =AliCDBManager::Instance()->Get("HMPID/Calib/UserCut"); //contains TObjArray of 14 TObject with n. of sigmas to cut charge
48 if(!pUserCutEnt) return; //No request from User to apply a more severe cut on pad charge
50 fUserCut = pUserCutEnt->GetObject()->GetUniqueID();
52 Printf(" usercut %i ",fUserCut);
54 AliCDBEntry *pDaqCutEnt =AliCDBManager::Instance()->Get("HMPID/Calib/DaqSigCut"); //contains TObjArray of 14 TObject with n. of sigmas to cut charge
55 if(!pDaqCutEnt) AliFatal("No pedestal sigmas cut!");
56 TObjArray *pDaqCut = (TObjArray*)pDaqCutEnt->GetObject();
59 for(Int_t ddl=0;ddl<14;ddl++){
60 if(fUserCut<=(Int_t)pDaqCut->At(ddl)->GetUniqueID()) continue;
61 AliCDBEntry *pDaqSigEnt =AliCDBManager::Instance()->Get("HMPID/Calib/DaqSig"); //contains TObjArray of TObjArray 14 TMatrixF sigmas values for pads
62 if(!pDaqSigEnt) AliFatal("No pedestals from DAQ!");
63 TObjArray *pDaqSig = (TObjArray*)pDaqSigEnt->GetObject();
67 }//AliHMPIDReconstructor
68 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
69 void AliHMPIDReconstructor::SigConv(TObjArray *pDaqSig)
71 // Conversion from the pedestal objects in to 7 TMatrixF(padX,padY)
72 //Arguments: pDaqSig pointer to the pedestal objects from OCDB
75 fDaqSig = new TObjArray(AliHMPIDDigit::kMaxCh+1);fDaqSig->SetOwner(kTRUE);
77 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++) fDaqSig->AddAt(new TMatrixF(1,10,0,47),iCh);
81 for(Int_t ddl=0;ddl<=13;ddl++){
82 for(Int_t row=1;row<=24;row++)
83 for(Int_t dil=1;dil<=10;dil++)
84 for(Int_t adr=0;adr<=47;adr++){
85 TObjArray *pDdl = (TObjArray*)pDaqSig->At(ddl);
86 TObjArray *pRow = (TObjArray*)pDdl->At(row-1);
87 TMatrixF *pM = (TMatrixF*)pRow;
88 Float_t sigma = (*pM)(dil,adr);
89 dig.Raw(ddl,row,dil,adr);
90 TMatrixF* pMConv = (TMatrixF*)(fDaqSig->At(dig.Ch()));
91 (*pMConv)(dig.PadChX(),dig.PadChY()) = sigma;
95 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
96 void AliHMPIDReconstructor::Dig2Clu(TObjArray *pDigAll,TObjArray *pCluAll,Bool_t isTryUnfold)
98 // Finds all clusters for a given digits list provided not empty. Currently digits list is a list of all digits for a single chamber.
99 // Puts all found clusters in separate lists, one per clusters.
100 // Arguments: pDigAll - list of digits for all chambers
101 // pCluAll - list of clusters for all chambers
102 // isTryUnfold - flag to choose between CoG and Mathieson fitting
104 TMatrixF padMap(AliHMPIDDigit::kMinPx,AliHMPIDDigit::kMaxPcx,AliHMPIDDigit::kMinPy,AliHMPIDDigit::kMaxPcy); //pads map for single chamber 0..159 x 0..143
106 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){ //chambers loop
107 TClonesArray *pDigCur=(TClonesArray*)pDigAll->At(iCh); //get list of digits for current chamber
108 if(pDigCur->GetEntriesFast()==0) continue; //no digits for current chamber
110 padMap=(Float_t)-1; //reset map to -1 (means no digit for this pad)
111 TClonesArray *pCluCur=(TClonesArray*)pCluAll->At(iCh); //get list of clusters for current chamber
113 for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop to fill pads map
114 AliHMPIDDigit *pDig= (AliHMPIDDigit*)pDigCur->At(iDig); //get current digit
115 padMap( pDig->PadChX(), pDig->PadChY() )=iDig; //fill the map, (padx,pady) cell takes digit index
116 }//digits loop to fill digits map
118 AliHMPIDCluster clu; //tmp cluster to be used as current
119 for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop for current chamber
120 AliHMPIDDigit *pDig=(AliHMPIDDigit*)pDigCur->At(iDig); //take current digit
121 if(!(pDig=UseDig(pDig->PadChX(),pDig->PadChY(),pDigCur,&padMap))) continue; //this digit is already taken in FormClu(), go after next digit
122 FormClu(&clu,pDig,pDigCur,&padMap); //form cluster starting from this digit by recursion
124 clu.Solve(pCluCur,isTryUnfold); //solve this cluster and add all unfolded clusters to provided list
125 clu.Reset(); //empty current cluster
126 }//digits loop for current chamber
129 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
130 void AliHMPIDReconstructor::FormClu(AliHMPIDCluster *pClu,AliHMPIDDigit *pDig,TClonesArray *pDigLst,TMatrixF *pDigMap)
132 // Forms the initial cluster as a combination of all adjascent digits. Starts from the given digit then calls itself recursevly for all neighbours.
133 // Arguments: pClu - pointer to cluster being formed
135 pClu->DigAdd(pDig);//take this digit in cluster
137 Int_t cnt=0,cx[4],cy[4];
139 if(pDig->PadPcX() != AliHMPIDDigit::kMinPx){cx[cnt]=pDig->PadChX()-1; cy[cnt]=pDig->PadChY() ;cnt++;} //left
140 if(pDig->PadPcX() != AliHMPIDDigit::kMaxPx){cx[cnt]=pDig->PadChX()+1; cy[cnt]=pDig->PadChY() ;cnt++;} //right
141 if(pDig->PadPcY() != AliHMPIDDigit::kMinPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()-1;cnt++;} //down
142 if(pDig->PadPcY() != AliHMPIDDigit::kMaxPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()+1;cnt++;} //up
144 for (Int_t i=0;i<cnt;i++){//neighbours loop
145 if((pDig=UseDig(cx[i],cy[i],pDigLst,pDigMap))) FormClu(pClu,pDig,pDigLst,pDigMap); //check if this neighbour pad fired and mark it as taken
148 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
149 void AliHMPIDReconstructor::Reconstruct(TTree *pDigTree,TTree *pCluTree)const
151 //Invoked by AliReconstruction to convert digits to clusters i.e. reconstruct simulated data
152 //Arguments: pDigTree - pointer to Digit tree
153 // pCluTree - poitner to Cluster tree
155 AliDebug(1,"Start.");
156 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++) {
157 pCluTree->Branch(Form("HMPID%d",iCh),&((*fClu)[iCh]),4000,0);
158 pDigTree->SetBranchAddress(Form("HMPID%d",iCh),&((*fDig)[iCh]));
160 pDigTree->GetEntry(0);
161 Dig2Clu(fDig,fClu); //cluster finder
162 pCluTree->Fill(); //fill tree for current event
164 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){
165 fDig->At(iCh)->Clear();
166 fClu->At(iCh)->Clear();
170 }//Reconstruct(for simulated digits)
171 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
172 void AliHMPIDReconstructor::Reconstruct(AliRunLoader *pAL,AliRawReader* pRR)const
174 //Invoked by AliReconstruction to convert raw digits from DDL files to clusters
175 //Arguments: pAL - ALICE run loader pointer
176 // pRR - ALICE raw reader pointer
178 AliLoader *pRL=pAL->GetDetectorLoader("HMPID"); AliHMPID *pRich=(AliHMPID*)pAL->GetAliRun()->GetDetector("HMPID");//get pointers for HMPID and HMPID loader
180 AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it
182 TObjArray digLst; Int_t iDigCnt[7]; for(Int_t i=0;i<7;i++){digLst.AddAt(new TClonesArray("AliHMPIDDigit"),i); iDigCnt[i]=0;} //tmp list of digits for allchambers
185 while(pRR->NextEvent()){//events loop
186 pAL->GetEvent(iEvtN++);
187 pRL->MakeTree("R"); pRich->MakeBranch("R");
189 for(Int_t iCh=0;iCh<7;iCh++){//chambers loop
190 pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber
192 while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files)
193 UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13
194 dig.Raw(w32,ddl,pRR);
195 AliDebug(1,Form("Ch=%i DDL=%i raw=0x%x digit=(%3i,%3i,%3i,%3i) Q=%5.2f",iCh,ddl,w32,dig.Ch(),dig.Pc(),dig.PadPcX(),dig.PadPcY(),dig.Q()));
196 if(!IsDigSurvive(&dig)) continue; //sigma cut test
197 new((*((TClonesArray*)digLst.At(iCh)))[iDigCnt[iCh]++]) AliHMPIDDigit(dig); //add this digit to the tmp list
202 Dig2Clu(&digLst,pRich->CluLst());//cluster finder for all chambers
203 for(Int_t i=0;i<7;i++){digLst.At(i)->Delete(); iDigCnt[i]=0;} //clean up list of digits for all chambers
205 pRL->TreeR()->Fill(); //fill tree for current event
206 pRL->WriteRecPoints("OVERWRITE");//write out clusters for current event
209 pRL->UnloadRecPoints();
210 }//Reconstruct raw data
211 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
212 void AliHMPIDReconstructor::ConvertDigits(AliRawReader *pRR,TTree *pDigTree)const
214 //Invoked by AliReconstruction to convert raw digits from DDL files to digits
215 //Arguments: pRR - ALICE raw reader pointer
216 // pDigTree - pointer to Digit tree
218 AliDebug(1,"Start.");
219 AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it
220 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++) {
221 pDigTree->Branch(Form("HMPID%d",iCh),&((*fDig)[iCh]),4000,0);
222 pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber
225 while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files)
226 UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13
227 if (!dig.Raw(w32,ddl,pRR)) continue;
228 AliDebug(1,Form("Ch=%i DDL=%i raw=0x%x digit=(%3i,%3i,%3i,%3i) Q=%5.2f",iCh,ddl,w32,dig.Ch(),dig.Pc(),dig.PadPcX(),dig.PadPcY(),dig.Q()));
229 if(!IsDigSurvive(&dig)) continue; //sigma cut test
230 new((*((TClonesArray*)fDig->At(iCh)))[iDigCnt++]) AliHMPIDDigit(dig); //add this digit to the tmp list
235 for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++)fDig->At(iCh)->Clear();
237 }//Reconstruct digits from raw digits
238 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
239 void AliHMPIDReconstructor::FillESD(AliRunLoader *, AliESD *pESD) const
241 // Calculates probability to be a electron-muon-pion-kaon-proton
242 // from the given Cerenkov angle and momentum assuming no initial particle composition
243 // (i.e. apriory probability to be the particle of the given sort is the same for all sorts)
246 Double_t pid[AliPID::kSPECIES],h[AliPID::kSPECIES];
248 for(Int_t iTrk=0;iTrk<pESD->GetNumberOfTracks();iTrk++){//ESD tracks loop
249 AliESDtrack *pTrk = pESD->GetTrack(iTrk);// get next reconstructed track
250 if(pTrk->GetHMPIDsignal()<=0){//HMPID does not find anything reasonable for this track, assign 0.2 for all species
251 for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++) pid[iPart]=1.0/AliPID::kSPECIES;
252 pTrk->SetHMPIDpid(pid);
255 Double_t pmod = pTrk->GetP();
257 for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++){
258 Double_t mass = AliPID::ParticleMass(iPart);
259 Double_t cosThetaTh = TMath::Sqrt(mass*mass+pmod*pmod)/(AliHMPIDParam::Instance()->MeanIdxRad()*pmod);
260 if(cosThetaTh<1) //calculate the height of theoretical theta ckov on the gaus of experimental one
261 h[iPart] =TMath::Gaus(TMath::ACos(cosThetaTh),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE);
262 else //beta < 1/ref. idx. => no light at all
264 hTot +=h[iPart]; //total height of all theoretical heights for normalization
267 Double_t hMin=TMath::Gaus(pTrk->GetHMPIDsignal()-4*TMath::Sqrt(pTrk->GetHMPIDchi2()),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE);//5 sigma protection
269 for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++)//species loop to assign probabilities
271 pid[iPart]=h[iPart]/hTot;
272 else //all theoretical values are far away from experemental one
273 pid[iPart]=1.0/AliPID::kSPECIES;
274 pTrk->SetHMPIDpid(pid);
277 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++