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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 | **************************************************************************/ | |
423554a3 | 15 | //. |
16 | // HMPID base class to reconstruct an event | |
17 | //. | |
18 | //. | |
19 | //. | |
d3da6dc4 | 20 | #include "AliHMPIDReconstructor.h" //class header |
21 | #include "AliHMPID.h" //Reconstruct() | |
a1d55ff3 | 22 | #include "AliHMPIDCluster.h" //Dig2Clu() |
d3da6dc4 | 23 | #include "AliHMPIDParam.h" //FillEsd() |
a0e5c1b9 | 24 | #include <AliCDBEntry.h> //ctor |
25 | #include <AliCDBManager.h> //ctor | |
555a0dbf | 26 | #include <AliESDEvent.h> //FillEsd() |
a0e5c1b9 | 27 | #include <AliRawReader.h> //Reconstruct() for raw digits |
d3da6dc4 | 28 | ClassImp(AliHMPIDReconstructor) |
29 | ||
94b1fbfa | 30 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
a0e5c1b9 | 31 | AliHMPIDReconstructor::AliHMPIDReconstructor():AliReconstructor(),fUserCut(0),fDaqSig(0),fDig(0),fClu(0) |
94b1fbfa | 32 | { |
33 | // | |
34 | //ctor | |
35 | // | |
909bfbdc | 36 | AliHMPIDParam::Instance(); //geometry loaded for reconstruction |
14dc2e6c | 37 | fUserCut = new Int_t[7]; |
ae5a42aa | 38 | fClu=new TObjArray(AliHMPIDParam::kMaxCh+1); fClu->SetOwner(kTRUE); |
39 | fDig=new TObjArray(AliHMPIDParam::kMaxCh+1); fDig->SetOwner(kTRUE); | |
9cc1a411 | 40 | |
ae5a42aa | 41 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ |
94b1fbfa | 42 | fDig->AddAt(new TClonesArray("AliHMPIDDigit"),i); |
611e810d | 43 | TClonesArray *pClus = new TClonesArray("AliHMPIDCluster"); |
44 | pClus->SetUniqueID(i); | |
45 | fClu->AddAt(pClus,i); | |
94b1fbfa | 46 | } |
a0e5c1b9 | 47 | |
a0e5c1b9 | 48 | AliCDBEntry *pUserCutEnt =AliCDBManager::Instance()->Get("HMPID/Calib/UserCut"); //contains TObjArray of 14 TObject with n. of sigmas to cut charge |
85692374 | 49 | if(pUserCutEnt) { |
50 | TObjArray *pUserCut = (TObjArray*)pUserCutEnt->GetObject(); | |
51 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop | |
52 | fUserCut[iCh] = pUserCut->At(iCh)->GetUniqueID(); | |
53 | Printf("HMPID: UserCut successfully loaded for chamber %i -> %i ",iCh,fUserCut[iCh]); | |
54 | } | |
9cc1a411 | 55 | } |
a0e5c1b9 | 56 | |
a0e5c1b9 | 57 | |
9cc1a411 | 58 | AliCDBEntry *pDaqSigEnt =AliCDBManager::Instance()->Get("HMPID/Calib/DaqSig"); //contains TObjArray of TObjArray 14 TMatrixF sigmas values for pads |
59 | if(!pDaqSigEnt) AliFatal("No pedestals from DAQ!"); | |
60 | fDaqSig = (TObjArray*)pDaqSigEnt->GetObject(); | |
61 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop | |
62 | Printf(" HMPID: DaqSigCut successfully loaded for chamber %i -> %i ",iCh,(Int_t)fDaqSig->At(iCh)->GetUniqueID()); | |
a0e5c1b9 | 63 | } |
94b1fbfa | 64 | }//AliHMPIDReconstructor |
d3da6dc4 | 65 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
3c6274c1 | 66 | void AliHMPIDReconstructor::Dig2Clu(TObjArray *pDigAll,TObjArray *pCluAll,Bool_t isTryUnfold) |
d3da6dc4 | 67 | { |
68 | // Finds all clusters for a given digits list provided not empty. Currently digits list is a list of all digits for a single chamber. | |
69 | // Puts all found clusters in separate lists, one per clusters. | |
3c6274c1 | 70 | // Arguments: pDigAll - list of digits for all chambers |
71 | // pCluAll - list of clusters for all chambers | |
d3da6dc4 | 72 | // isTryUnfold - flag to choose between CoG and Mathieson fitting |
73 | // Returns: none | |
ae5a42aa | 74 | TMatrixF padMap(AliHMPIDParam::kMinPx,AliHMPIDParam::kMaxPcx,AliHMPIDParam::kMinPy,AliHMPIDParam::kMaxPcy); //pads map for single chamber 0..159 x 0..143 |
3c6274c1 | 75 | |
ae5a42aa | 76 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop |
3c6274c1 | 77 | TClonesArray *pDigCur=(TClonesArray*)pDigAll->At(iCh); //get list of digits for current chamber |
78 | if(pDigCur->GetEntriesFast()==0) continue; //no digits for current chamber | |
d3da6dc4 | 79 | |
3c6274c1 | 80 | padMap=(Float_t)-1; //reset map to -1 (means no digit for this pad) |
81 | TClonesArray *pCluCur=(TClonesArray*)pCluAll->At(iCh); //get list of clusters for current chamber | |
82 | ||
83 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop to fill pads map | |
84 | AliHMPIDDigit *pDig= (AliHMPIDDigit*)pDigCur->At(iDig); //get current digit | |
85 | padMap( pDig->PadChX(), pDig->PadChY() )=iDig; //fill the map, (padx,pady) cell takes digit index | |
86 | }//digits loop to fill digits map | |
87 | ||
88 | AliHMPIDCluster clu; //tmp cluster to be used as current | |
3c6274c1 | 89 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop for current chamber |
90 | AliHMPIDDigit *pDig=(AliHMPIDDigit*)pDigCur->At(iDig); //take current digit | |
91 | if(!(pDig=UseDig(pDig->PadChX(),pDig->PadChY(),pDigCur,&padMap))) continue; //this digit is already taken in FormClu(), go after next digit | |
92 | FormClu(&clu,pDig,pDigCur,&padMap); //form cluster starting from this digit by recursion | |
93 | ||
94 | clu.Solve(pCluCur,isTryUnfold); //solve this cluster and add all unfolded clusters to provided list | |
95 | clu.Reset(); //empty current cluster | |
96 | }//digits loop for current chamber | |
97 | }//chambers loop | |
d3da6dc4 | 98 | }//Dig2Clu() |
99 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
100 | void AliHMPIDReconstructor::FormClu(AliHMPIDCluster *pClu,AliHMPIDDigit *pDig,TClonesArray *pDigLst,TMatrixF *pDigMap) | |
101 | { | |
a1d55ff3 | 102 | // Forms the initial cluster as a combination of all adjascent digits. Starts from the given digit then calls itself recursevly for all neighbours. |
d3da6dc4 | 103 | // Arguments: pClu - pointer to cluster being formed |
a1d55ff3 | 104 | // Returns: none |
d3da6dc4 | 105 | pClu->DigAdd(pDig);//take this digit in cluster |
106 | ||
3c6274c1 | 107 | Int_t cnt=0,cx[4],cy[4]; |
d3da6dc4 | 108 | |
ae5a42aa | 109 | if(pDig->PadPcX() != AliHMPIDParam::kMinPx){cx[cnt]=pDig->PadChX()-1; cy[cnt]=pDig->PadChY() ;cnt++;} //left |
110 | if(pDig->PadPcX() != AliHMPIDParam::kMaxPx){cx[cnt]=pDig->PadChX()+1; cy[cnt]=pDig->PadChY() ;cnt++;} //right | |
111 | if(pDig->PadPcY() != AliHMPIDParam::kMinPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()-1;cnt++;} //down | |
112 | if(pDig->PadPcY() != AliHMPIDParam::kMaxPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()+1;cnt++;} //up | |
d3da6dc4 | 113 | |
a1d55ff3 | 114 | for (Int_t i=0;i<cnt;i++){//neighbours loop |
3c6274c1 | 115 | 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 | 116 | }//neighbours loop |
d3da6dc4 | 117 | }//FormClu() |
118 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
94b1fbfa | 119 | void AliHMPIDReconstructor::Reconstruct(TTree *pDigTree,TTree *pCluTree)const |
d3da6dc4 | 120 | { |
121 | //Invoked by AliReconstruction to convert digits to clusters i.e. reconstruct simulated data | |
94b1fbfa | 122 | //Arguments: pDigTree - pointer to Digit tree |
123 | // pCluTree - poitner to Cluster tree | |
d3da6dc4 | 124 | // Returns: none |
125 | AliDebug(1,"Start."); | |
ae5a42aa | 126 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) { |
94b1fbfa | 127 | pCluTree->Branch(Form("HMPID%d",iCh),&((*fClu)[iCh]),4000,0); |
128 | pDigTree->SetBranchAddress(Form("HMPID%d",iCh),&((*fDig)[iCh])); | |
129 | } | |
130 | pDigTree->GetEntry(0); | |
131 | Dig2Clu(fDig,fClu); //cluster finder | |
132 | pCluTree->Fill(); //fill tree for current event | |
133 | ||
ae5a42aa | 134 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ |
94b1fbfa | 135 | fDig->At(iCh)->Clear(); |
136 | fClu->At(iCh)->Clear(); | |
137 | } | |
d3da6dc4 | 138 | |
d3da6dc4 | 139 | AliDebug(1,"Stop."); |
140 | }//Reconstruct(for simulated digits) | |
a1d55ff3 | 141 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
d3da6dc4 | 142 | void AliHMPIDReconstructor::Reconstruct(AliRunLoader *pAL,AliRawReader* pRR)const |
143 | { | |
144 | //Invoked by AliReconstruction to convert raw digits from DDL files to clusters | |
145 | //Arguments: pAL - ALICE run loader pointer | |
94b1fbfa | 146 | // pRR - ALICE raw reader pointer |
147 | // Returns: none | |
d3da6dc4 | 148 | AliLoader *pRL=pAL->GetDetectorLoader("HMPID"); AliHMPID *pRich=(AliHMPID*)pAL->GetAliRun()->GetDetector("HMPID");//get pointers for HMPID and HMPID loader |
94b1fbfa | 149 | |
d3da6dc4 | 150 | AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it |
94b1fbfa | 151 | |
152 | 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 | |
153 | ||
d3da6dc4 | 154 | Int_t iEvtN=0; |
155 | while(pRR->NextEvent()){//events loop | |
156 | pAL->GetEvent(iEvtN++); | |
157 | pRL->MakeTree("R"); pRich->MakeBranch("R"); | |
94b1fbfa | 158 | |
d3da6dc4 | 159 | for(Int_t iCh=0;iCh<7;iCh++){//chambers loop |
94b1fbfa | 160 | pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber |
d3da6dc4 | 161 | UInt_t w32=0; |
162 | while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files) | |
163 | UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13 | |
49dfd67a | 164 | dig.Raw(w32,ddl,pRR); |
da08475b | 165 | 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())); |
a0e5c1b9 | 166 | if(!IsDigSurvive(&dig)) continue; //sigma cut test |
3c6274c1 | 167 | new((*((TClonesArray*)digLst.At(iCh)))[iDigCnt[iCh]++]) AliHMPIDDigit(dig); //add this digit to the tmp list |
d3da6dc4 | 168 | }//raw records loop |
94b1fbfa | 169 | pRR->Reset(); |
d3da6dc4 | 170 | }//chambers loop |
94b1fbfa | 171 | |
3c6274c1 | 172 | Dig2Clu(&digLst,pRich->CluLst());//cluster finder for all chambers |
173 | for(Int_t i=0;i<7;i++){digLst.At(i)->Delete(); iDigCnt[i]=0;} //clean up list of digits for all chambers | |
94b1fbfa | 174 | |
d3da6dc4 | 175 | pRL->TreeR()->Fill(); //fill tree for current event |
176 | pRL->WriteRecPoints("OVERWRITE");//write out clusters for current event | |
177 | pRich->CluReset(); | |
94b1fbfa | 178 | }//events loop |
179 | pRL->UnloadRecPoints(); | |
d3da6dc4 | 180 | }//Reconstruct raw data |
181 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
94b1fbfa | 182 | void AliHMPIDReconstructor::ConvertDigits(AliRawReader *pRR,TTree *pDigTree)const |
183 | { | |
184 | //Invoked by AliReconstruction to convert raw digits from DDL files to digits | |
185 | //Arguments: pRR - ALICE raw reader pointer | |
186 | // pDigTree - pointer to Digit tree | |
187 | // Returns: none | |
188 | AliDebug(1,"Start."); | |
189 | AliHMPIDDigit dig; //tmp digit, raw digit will be converted to it | |
ae5a42aa | 190 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) { |
94b1fbfa | 191 | pDigTree->Branch(Form("HMPID%d",iCh),&((*fDig)[iCh]),4000,0); |
192 | pRR->Select("HMPID",2*iCh,2*iCh+1);//select only DDL files for the current chamber | |
193 | Int_t iDigCnt=0; | |
194 | UInt_t w32=0; | |
ae5a42aa | 195 | while(pRR->ReadNextInt(w32)){//raw records loop (in selected DDL files) |
94b1fbfa | 196 | UInt_t ddl=pRR->GetDDLID(); //returns 0,1,2 ... 13 |
ae5a42aa | 197 | if(!dig.Raw(w32,ddl,pRR)) continue; |
94b1fbfa | 198 | 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())); |
a0e5c1b9 | 199 | if(!IsDigSurvive(&dig)) continue; //sigma cut test |
94b1fbfa | 200 | new((*((TClonesArray*)fDig->At(iCh)))[iDigCnt++]) AliHMPIDDigit(dig); //add this digit to the tmp list |
201 | }//raw records loop | |
202 | pRR->Reset(); | |
203 | }//chambers loop | |
204 | pDigTree->Fill(); | |
ae5a42aa | 205 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++)fDig->At(iCh)->Clear(); |
94b1fbfa | 206 | AliDebug(1,"Stop."); |
207 | }//Reconstruct digits from raw digits | |
208 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
555a0dbf | 209 | void AliHMPIDReconstructor::FillESD(AliRunLoader *, AliESDEvent *pESD) const |
d3da6dc4 | 210 | { |
211 | // Calculates probability to be a electron-muon-pion-kaon-proton | |
212 | // from the given Cerenkov angle and momentum assuming no initial particle composition | |
213 | // (i.e. apriory probability to be the particle of the given sort is the same for all sorts) | |
214 | ||
215 | AliPID ppp; //needed | |
216 | Double_t pid[AliPID::kSPECIES],h[AliPID::kSPECIES]; | |
217 | ||
218 | for(Int_t iTrk=0;iTrk<pESD->GetNumberOfTracks();iTrk++){//ESD tracks loop | |
219 | AliESDtrack *pTrk = pESD->GetTrack(iTrk);// get next reconstructed track | |
220 | if(pTrk->GetHMPIDsignal()<=0){//HMPID does not find anything reasonable for this track, assign 0.2 for all species | |
221 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++) pid[iPart]=1.0/AliPID::kSPECIES; | |
222 | pTrk->SetHMPIDpid(pid); | |
223 | continue; | |
224 | } | |
225 | Double_t pmod = pTrk->GetP(); | |
226 | Double_t hTot=0; | |
227 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++){ | |
228 | Double_t mass = AliPID::ParticleMass(iPart); | |
229 | Double_t cosThetaTh = TMath::Sqrt(mass*mass+pmod*pmod)/(AliHMPIDParam::Instance()->MeanIdxRad()*pmod); | |
a1d55ff3 | 230 | if(cosThetaTh<1) //calculate the height of theoretical theta ckov on the gaus of experimental one |
231 | h[iPart] =TMath::Gaus(TMath::ACos(cosThetaTh),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE); | |
d3da6dc4 | 232 | else //beta < 1/ref. idx. => no light at all |
233 | h[iPart] =0 ; | |
234 | hTot +=h[iPart]; //total height of all theoretical heights for normalization | |
235 | }//species loop | |
236 | ||
237 | Double_t hMin=TMath::Gaus(pTrk->GetHMPIDsignal()-4*TMath::Sqrt(pTrk->GetHMPIDchi2()),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE);//5 sigma protection | |
238 | ||
239 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++)//species loop to assign probabilities | |
240 | if(hTot>hMin) | |
241 | pid[iPart]=h[iPart]/hTot; | |
242 | else //all theoretical values are far away from experemental one | |
243 | pid[iPart]=1.0/AliPID::kSPECIES; | |
244 | pTrk->SetHMPIDpid(pid); | |
245 | }//ESD tracks loop | |
a1d55ff3 | 246 | }//FillESD() |
d3da6dc4 | 247 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |