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d3da6dc4 | 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 "AliHMPIDReconstructor.h" //class header | |
17 | #include "AliHMPID.h" //Reconstruct() | |
a1d55ff3 | 18 | #include "AliHMPIDCluster.h" //Dig2Clu() |
d3da6dc4 | 19 | #include "AliHMPIDParam.h" //FillEsd() |
20 | #include <AliESD.h> //FillEsd() | |
d3da6dc4 | 21 | #include <AliRawReader.h> //Reconstruct() for raw digits |
d3da6dc4 | 22 | ClassImp(AliHMPIDReconstructor) |
23 | ||
94b1fbfa | 24 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
25 | AliHMPIDReconstructor::AliHMPIDReconstructor():AliReconstructor() | |
26 | { | |
27 | // | |
28 | //ctor | |
29 | // | |
30 | fClu=new TObjArray(AliHMPIDDigit::kMaxCh+1); | |
31 | fDig=new TObjArray(AliHMPIDDigit::kMaxCh+1); | |
32 | fClu->SetOwner(kTRUE); | |
33 | for(int i=AliHMPIDDigit::kMinCh;i<=AliHMPIDDigit::kMaxCh;i++){ | |
34 | fDig->AddAt(new TClonesArray("AliHMPIDDigit"),i); | |
35 | fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i); | |
36 | } | |
37 | fDig->SetOwner(kTRUE); | |
38 | }//AliHMPIDReconstructor | |
d3da6dc4 | 39 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
3c6274c1 | 40 | void AliHMPIDReconstructor::Dig2Clu(TObjArray *pDigAll,TObjArray *pCluAll,Bool_t isTryUnfold) |
d3da6dc4 | 41 | { |
42 | // Finds all clusters for a given digits list provided not empty. Currently digits list is a list of all digits for a single chamber. | |
43 | // Puts all found clusters in separate lists, one per clusters. | |
3c6274c1 | 44 | // Arguments: pDigAll - list of digits for all chambers |
45 | // pCluAll - list of clusters for all chambers | |
d3da6dc4 | 46 | // isTryUnfold - flag to choose between CoG and Mathieson fitting |
47 | // Returns: none | |
a1d55ff3 | 48 | TMatrixF padMap(AliHMPIDDigit::kMinPx,AliHMPIDDigit::kMaxPcx,AliHMPIDDigit::kMinPy,AliHMPIDDigit::kMaxPcy); //pads map for single chamber 0..159 x 0..143 |
3c6274c1 | 49 | |
a1d55ff3 | 50 | for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){ //chambers loop |
3c6274c1 | 51 | TClonesArray *pDigCur=(TClonesArray*)pDigAll->At(iCh); //get list of digits for current chamber |
52 | if(pDigCur->GetEntriesFast()==0) continue; //no digits for current chamber | |
d3da6dc4 | 53 | |
3c6274c1 | 54 | padMap=(Float_t)-1; //reset map to -1 (means no digit for this pad) |
55 | TClonesArray *pCluCur=(TClonesArray*)pCluAll->At(iCh); //get list of clusters for current chamber | |
56 | ||
57 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop to fill pads map | |
58 | AliHMPIDDigit *pDig= (AliHMPIDDigit*)pDigCur->At(iDig); //get current digit | |
59 | padMap( pDig->PadChX(), pDig->PadChY() )=iDig; //fill the map, (padx,pady) cell takes digit index | |
60 | }//digits loop to fill digits map | |
61 | ||
62 | AliHMPIDCluster clu; //tmp cluster to be used as current | |
d3da6dc4 | 63 | |
3c6274c1 | 64 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop for current chamber |
65 | AliHMPIDDigit *pDig=(AliHMPIDDigit*)pDigCur->At(iDig); //take current digit | |
66 | if(!(pDig=UseDig(pDig->PadChX(),pDig->PadChY(),pDigCur,&padMap))) continue; //this digit is already taken in FormClu(), go after next digit | |
67 | FormClu(&clu,pDig,pDigCur,&padMap); //form cluster starting from this digit by recursion | |
68 | ||
69 | clu.Solve(pCluCur,isTryUnfold); //solve this cluster and add all unfolded clusters to provided list | |
70 | clu.Reset(); //empty current cluster | |
71 | }//digits loop for current chamber | |
72 | }//chambers loop | |
d3da6dc4 | 73 | }//Dig2Clu() |
74 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
75 | void AliHMPIDReconstructor::FormClu(AliHMPIDCluster *pClu,AliHMPIDDigit *pDig,TClonesArray *pDigLst,TMatrixF *pDigMap) | |
76 | { | |
a1d55ff3 | 77 | // Forms the initial cluster as a combination of all adjascent digits. Starts from the given digit then calls itself recursevly for all neighbours. |
d3da6dc4 | 78 | // Arguments: pClu - pointer to cluster being formed |
a1d55ff3 | 79 | // Returns: none |
d3da6dc4 | 80 | pClu->DigAdd(pDig);//take this digit in cluster |
81 | ||
3c6274c1 | 82 | Int_t cnt=0,cx[4],cy[4]; |
d3da6dc4 | 83 | |
a1d55ff3 | 84 | if(pDig->PadPcX() != AliHMPIDDigit::kMinPx){cx[cnt]=pDig->PadChX()-1; cy[cnt]=pDig->PadChY() ;cnt++;} //left |
85 | if(pDig->PadPcX() != AliHMPIDDigit::kMaxPx){cx[cnt]=pDig->PadChX()+1; cy[cnt]=pDig->PadChY() ;cnt++;} //right | |
86 | if(pDig->PadPcY() != AliHMPIDDigit::kMinPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()-1;cnt++;} //down | |
87 | if(pDig->PadPcY() != AliHMPIDDigit::kMaxPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()+1;cnt++;} //up | |
d3da6dc4 | 88 | |
a1d55ff3 | 89 | for (Int_t i=0;i<cnt;i++){//neighbours loop |
3c6274c1 | 90 | 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 |
a1d55ff3 | 91 | }//neighbours loop |
d3da6dc4 | 92 | }//FormClu() |
93 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
94b1fbfa | 94 | void AliHMPIDReconstructor::Reconstruct(TTree *pDigTree,TTree *pCluTree)const |
d3da6dc4 | 95 | { |
96 | //Invoked by AliReconstruction to convert digits to clusters i.e. reconstruct simulated data | |
94b1fbfa | 97 | //Arguments: pDigTree - pointer to Digit tree |
98 | // pCluTree - poitner to Cluster tree | |
d3da6dc4 | 99 | // Returns: none |
100 | AliDebug(1,"Start."); | |
94b1fbfa | 101 | for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++) { |
102 | pCluTree->Branch(Form("HMPID%d",iCh),&((*fClu)[iCh]),4000,0); | |
103 | pDigTree->SetBranchAddress(Form("HMPID%d",iCh),&((*fDig)[iCh])); | |
104 | } | |
105 | pDigTree->GetEntry(0); | |
106 | Dig2Clu(fDig,fClu); //cluster finder | |
107 | pCluTree->Fill(); //fill tree for current event | |
108 | ||
109 | for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){ | |
110 | fDig->At(iCh)->Clear(); | |
111 | fClu->At(iCh)->Clear(); | |
112 | } | |
d3da6dc4 | 113 | |
d3da6dc4 | 114 | AliDebug(1,"Stop."); |
115 | }//Reconstruct(for simulated digits) | |
a1d55ff3 | 116 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
d3da6dc4 | 117 | void AliHMPIDReconstructor::Reconstruct(AliRunLoader *pAL,AliRawReader* pRR)const |
118 | { | |
119 | //Invoked by AliReconstruction to convert raw digits from DDL files to clusters | |
120 | //Arguments: pAL - ALICE run loader pointer | |
94b1fbfa | 121 | // pRR - ALICE raw reader pointer |
122 | // Returns: none | |
d3da6dc4 | 123 | AliLoader *pRL=pAL->GetDetectorLoader("HMPID"); AliHMPID *pRich=(AliHMPID*)pAL->GetAliRun()->GetDetector("HMPID");//get pointers for HMPID and HMPID loader |
94b1fbfa | 124 | |
d3da6dc4 | 125 | AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it |
94b1fbfa | 126 | |
127 | 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 | |
128 | ||
d3da6dc4 | 129 | Int_t iEvtN=0; |
130 | while(pRR->NextEvent()){//events loop | |
131 | pAL->GetEvent(iEvtN++); | |
132 | pRL->MakeTree("R"); pRich->MakeBranch("R"); | |
94b1fbfa | 133 | |
d3da6dc4 | 134 | for(Int_t iCh=0;iCh<7;iCh++){//chambers loop |
94b1fbfa | 135 | pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber |
d3da6dc4 | 136 | UInt_t w32=0; |
137 | while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files) | |
138 | UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13 | |
94b1fbfa | 139 | dig.Raw(w32,ddl); |
da08475b | 140 | 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())); |
3c6274c1 | 141 | new((*((TClonesArray*)digLst.At(iCh)))[iDigCnt[iCh]++]) AliHMPIDDigit(dig); //add this digit to the tmp list |
d3da6dc4 | 142 | }//raw records loop |
94b1fbfa | 143 | pRR->Reset(); |
d3da6dc4 | 144 | }//chambers loop |
94b1fbfa | 145 | |
3c6274c1 | 146 | Dig2Clu(&digLst,pRich->CluLst());//cluster finder for all chambers |
147 | for(Int_t i=0;i<7;i++){digLst.At(i)->Delete(); iDigCnt[i]=0;} //clean up list of digits for all chambers | |
94b1fbfa | 148 | |
d3da6dc4 | 149 | pRL->TreeR()->Fill(); //fill tree for current event |
150 | pRL->WriteRecPoints("OVERWRITE");//write out clusters for current event | |
151 | pRich->CluReset(); | |
94b1fbfa | 152 | }//events loop |
153 | pRL->UnloadRecPoints(); | |
d3da6dc4 | 154 | }//Reconstruct raw data |
155 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
94b1fbfa | 156 | void AliHMPIDReconstructor::ConvertDigits(AliRawReader *pRR,TTree *pDigTree)const |
157 | { | |
158 | //Invoked by AliReconstruction to convert raw digits from DDL files to digits | |
159 | //Arguments: pRR - ALICE raw reader pointer | |
160 | // pDigTree - pointer to Digit tree | |
161 | // Returns: none | |
162 | AliDebug(1,"Start."); | |
163 | AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it | |
164 | for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++) { | |
165 | pDigTree->Branch(Form("HMPID%d",iCh),&((*fDig)[iCh]),4000,0); | |
166 | pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber | |
167 | Int_t iDigCnt=0; | |
168 | UInt_t w32=0; | |
169 | while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files) | |
170 | UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13 | |
171 | dig.Raw(w32,ddl); | |
172 | 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())); | |
173 | new((*((TClonesArray*)fDig->At(iCh)))[iDigCnt++]) AliHMPIDDigit(dig); //add this digit to the tmp list | |
174 | }//raw records loop | |
175 | pRR->Reset(); | |
176 | }//chambers loop | |
177 | pDigTree->Fill(); | |
178 | for(Int_t iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++)fDig->At(iCh)->Clear(); | |
179 | AliDebug(1,"Stop."); | |
180 | }//Reconstruct digits from raw digits | |
181 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
d3da6dc4 | 182 | void AliHMPIDReconstructor::FillESD(AliRunLoader *, AliESD *pESD) const |
183 | { | |
184 | // Calculates probability to be a electron-muon-pion-kaon-proton | |
185 | // from the given Cerenkov angle and momentum assuming no initial particle composition | |
186 | // (i.e. apriory probability to be the particle of the given sort is the same for all sorts) | |
187 | ||
188 | AliPID ppp; //needed | |
189 | Double_t pid[AliPID::kSPECIES],h[AliPID::kSPECIES]; | |
190 | ||
191 | for(Int_t iTrk=0;iTrk<pESD->GetNumberOfTracks();iTrk++){//ESD tracks loop | |
192 | AliESDtrack *pTrk = pESD->GetTrack(iTrk);// get next reconstructed track | |
193 | if(pTrk->GetHMPIDsignal()<=0){//HMPID does not find anything reasonable for this track, assign 0.2 for all species | |
194 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++) pid[iPart]=1.0/AliPID::kSPECIES; | |
195 | pTrk->SetHMPIDpid(pid); | |
196 | continue; | |
197 | } | |
198 | Double_t pmod = pTrk->GetP(); | |
199 | Double_t hTot=0; | |
200 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++){ | |
201 | Double_t mass = AliPID::ParticleMass(iPart); | |
202 | Double_t cosThetaTh = TMath::Sqrt(mass*mass+pmod*pmod)/(AliHMPIDParam::Instance()->MeanIdxRad()*pmod); | |
a1d55ff3 | 203 | if(cosThetaTh<1) //calculate the height of theoretical theta ckov on the gaus of experimental one |
204 | h[iPart] =TMath::Gaus(TMath::ACos(cosThetaTh),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE); | |
d3da6dc4 | 205 | else //beta < 1/ref. idx. => no light at all |
206 | h[iPart] =0 ; | |
207 | hTot +=h[iPart]; //total height of all theoretical heights for normalization | |
208 | }//species loop | |
209 | ||
210 | Double_t hMin=TMath::Gaus(pTrk->GetHMPIDsignal()-4*TMath::Sqrt(pTrk->GetHMPIDchi2()),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE);//5 sigma protection | |
211 | ||
212 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++)//species loop to assign probabilities | |
213 | if(hTot>hMin) | |
214 | pid[iPart]=h[iPart]/hTot; | |
215 | else //all theoretical values are far away from experemental one | |
216 | pid[iPart]=1.0/AliPID::kSPECIES; | |
217 | pTrk->SetHMPIDpid(pid); | |
218 | }//ESD tracks loop | |
a1d55ff3 | 219 | }//FillESD() |
d3da6dc4 | 220 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |