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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 |
d76c31f4 | 28 | #include "AliHMPIDRawStream.h" //ConvertDigits() |
d3da6dc4 | 29 | ClassImp(AliHMPIDReconstructor) |
30 | ||
94b1fbfa | 31 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
a0e5c1b9 | 32 | AliHMPIDReconstructor::AliHMPIDReconstructor():AliReconstructor(),fUserCut(0),fDaqSig(0),fDig(0),fClu(0) |
94b1fbfa | 33 | { |
34 | // | |
35 | //ctor | |
36 | // | |
909bfbdc | 37 | AliHMPIDParam::Instance(); //geometry loaded for reconstruction |
14dc2e6c | 38 | fUserCut = new Int_t[7]; |
ae5a42aa | 39 | fClu=new TObjArray(AliHMPIDParam::kMaxCh+1); fClu->SetOwner(kTRUE); |
40 | fDig=new TObjArray(AliHMPIDParam::kMaxCh+1); fDig->SetOwner(kTRUE); | |
9cc1a411 | 41 | |
ae5a42aa | 42 | for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ |
94b1fbfa | 43 | fDig->AddAt(new TClonesArray("AliHMPIDDigit"),i); |
611e810d | 44 | TClonesArray *pClus = new TClonesArray("AliHMPIDCluster"); |
45 | pClus->SetUniqueID(i); | |
46 | fClu->AddAt(pClus,i); | |
94b1fbfa | 47 | } |
a0e5c1b9 | 48 | |
a0e5c1b9 | 49 | AliCDBEntry *pUserCutEnt =AliCDBManager::Instance()->Get("HMPID/Calib/UserCut"); //contains TObjArray of 14 TObject with n. of sigmas to cut charge |
85692374 | 50 | if(pUserCutEnt) { |
51 | TObjArray *pUserCut = (TObjArray*)pUserCutEnt->GetObject(); | |
52 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop | |
53 | fUserCut[iCh] = pUserCut->At(iCh)->GetUniqueID(); | |
54 | Printf("HMPID: UserCut successfully loaded for chamber %i -> %i ",iCh,fUserCut[iCh]); | |
55 | } | |
9cc1a411 | 56 | } |
a0e5c1b9 | 57 | |
a0e5c1b9 | 58 | |
9cc1a411 | 59 | AliCDBEntry *pDaqSigEnt =AliCDBManager::Instance()->Get("HMPID/Calib/DaqSig"); //contains TObjArray of TObjArray 14 TMatrixF sigmas values for pads |
60 | if(!pDaqSigEnt) AliFatal("No pedestals from DAQ!"); | |
61 | fDaqSig = (TObjArray*)pDaqSigEnt->GetObject(); | |
62 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop | |
63 | Printf(" HMPID: DaqSigCut successfully loaded for chamber %i -> %i ",iCh,(Int_t)fDaqSig->At(iCh)->GetUniqueID()); | |
a0e5c1b9 | 64 | } |
94b1fbfa | 65 | }//AliHMPIDReconstructor |
d3da6dc4 | 66 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
3c6274c1 | 67 | void AliHMPIDReconstructor::Dig2Clu(TObjArray *pDigAll,TObjArray *pCluAll,Bool_t isTryUnfold) |
d3da6dc4 | 68 | { |
69 | // Finds all clusters for a given digits list provided not empty. Currently digits list is a list of all digits for a single chamber. | |
70 | // Puts all found clusters in separate lists, one per clusters. | |
3c6274c1 | 71 | // Arguments: pDigAll - list of digits for all chambers |
72 | // pCluAll - list of clusters for all chambers | |
d3da6dc4 | 73 | // isTryUnfold - flag to choose between CoG and Mathieson fitting |
74 | // Returns: none | |
ae5a42aa | 75 | TMatrixF padMap(AliHMPIDParam::kMinPx,AliHMPIDParam::kMaxPcx,AliHMPIDParam::kMinPy,AliHMPIDParam::kMaxPcy); //pads map for single chamber 0..159 x 0..143 |
3c6274c1 | 76 | |
ae5a42aa | 77 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop |
3c6274c1 | 78 | TClonesArray *pDigCur=(TClonesArray*)pDigAll->At(iCh); //get list of digits for current chamber |
79 | if(pDigCur->GetEntriesFast()==0) continue; //no digits for current chamber | |
d3da6dc4 | 80 | |
3c6274c1 | 81 | padMap=(Float_t)-1; //reset map to -1 (means no digit for this pad) |
82 | TClonesArray *pCluCur=(TClonesArray*)pCluAll->At(iCh); //get list of clusters for current chamber | |
83 | ||
84 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop to fill pads map | |
85 | AliHMPIDDigit *pDig= (AliHMPIDDigit*)pDigCur->At(iDig); //get current digit | |
86 | padMap( pDig->PadChX(), pDig->PadChY() )=iDig; //fill the map, (padx,pady) cell takes digit index | |
87 | }//digits loop to fill digits map | |
88 | ||
89 | AliHMPIDCluster clu; //tmp cluster to be used as current | |
3c6274c1 | 90 | for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop for current chamber |
91 | AliHMPIDDigit *pDig=(AliHMPIDDigit*)pDigCur->At(iDig); //take current digit | |
92 | if(!(pDig=UseDig(pDig->PadChX(),pDig->PadChY(),pDigCur,&padMap))) continue; //this digit is already taken in FormClu(), go after next digit | |
93 | FormClu(&clu,pDig,pDigCur,&padMap); //form cluster starting from this digit by recursion | |
94 | ||
95 | clu.Solve(pCluCur,isTryUnfold); //solve this cluster and add all unfolded clusters to provided list | |
96 | clu.Reset(); //empty current cluster | |
97 | }//digits loop for current chamber | |
98 | }//chambers loop | |
d3da6dc4 | 99 | }//Dig2Clu() |
100 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
101 | void AliHMPIDReconstructor::FormClu(AliHMPIDCluster *pClu,AliHMPIDDigit *pDig,TClonesArray *pDigLst,TMatrixF *pDigMap) | |
102 | { | |
a1d55ff3 | 103 | // Forms the initial cluster as a combination of all adjascent digits. Starts from the given digit then calls itself recursevly for all neighbours. |
d3da6dc4 | 104 | // Arguments: pClu - pointer to cluster being formed |
a1d55ff3 | 105 | // Returns: none |
d3da6dc4 | 106 | pClu->DigAdd(pDig);//take this digit in cluster |
107 | ||
3c6274c1 | 108 | Int_t cnt=0,cx[4],cy[4]; |
d3da6dc4 | 109 | |
ae5a42aa | 110 | if(pDig->PadPcX() != AliHMPIDParam::kMinPx){cx[cnt]=pDig->PadChX()-1; cy[cnt]=pDig->PadChY() ;cnt++;} //left |
111 | if(pDig->PadPcX() != AliHMPIDParam::kMaxPx){cx[cnt]=pDig->PadChX()+1; cy[cnt]=pDig->PadChY() ;cnt++;} //right | |
112 | if(pDig->PadPcY() != AliHMPIDParam::kMinPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()-1;cnt++;} //down | |
113 | if(pDig->PadPcY() != AliHMPIDParam::kMaxPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()+1;cnt++;} //up | |
d3da6dc4 | 114 | |
a1d55ff3 | 115 | for (Int_t i=0;i<cnt;i++){//neighbours loop |
3c6274c1 | 116 | 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 | 117 | }//neighbours loop |
d3da6dc4 | 118 | }//FormClu() |
119 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
94b1fbfa | 120 | void AliHMPIDReconstructor::Reconstruct(TTree *pDigTree,TTree *pCluTree)const |
d3da6dc4 | 121 | { |
122 | //Invoked by AliReconstruction to convert digits to clusters i.e. reconstruct simulated data | |
94b1fbfa | 123 | //Arguments: pDigTree - pointer to Digit tree |
124 | // pCluTree - poitner to Cluster tree | |
d3da6dc4 | 125 | // Returns: none |
126 | AliDebug(1,"Start."); | |
ae5a42aa | 127 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) { |
94b1fbfa | 128 | pCluTree->Branch(Form("HMPID%d",iCh),&((*fClu)[iCh]),4000,0); |
129 | pDigTree->SetBranchAddress(Form("HMPID%d",iCh),&((*fDig)[iCh])); | |
130 | } | |
131 | pDigTree->GetEntry(0); | |
132 | Dig2Clu(fDig,fClu); //cluster finder | |
133 | pCluTree->Fill(); //fill tree for current event | |
134 | ||
ae5a42aa | 135 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ |
94b1fbfa | 136 | fDig->At(iCh)->Clear(); |
137 | fClu->At(iCh)->Clear(); | |
138 | } | |
d3da6dc4 | 139 | |
d3da6dc4 | 140 | AliDebug(1,"Stop."); |
141 | }//Reconstruct(for simulated digits) | |
a1d55ff3 | 142 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
94b1fbfa | 143 | void AliHMPIDReconstructor::ConvertDigits(AliRawReader *pRR,TTree *pDigTree)const |
144 | { | |
145 | //Invoked by AliReconstruction to convert raw digits from DDL files to digits | |
146 | //Arguments: pRR - ALICE raw reader pointer | |
147 | // pDigTree - pointer to Digit tree | |
148 | // Returns: none | |
149 | AliDebug(1,"Start."); | |
21f61e25 | 150 | // Int_t digcnt=0; |
151 | ||
152 | ||
ae5a42aa | 153 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) { |
21f61e25 | 154 | pDigTree->Branch(Form("HMPID%d",iCh),&((*fDig)[iCh]),4000,0); |
155 | ||
94b1fbfa | 156 | Int_t iDigCnt=0; |
21f61e25 | 157 | AliHMPIDRawStream stream(pRR); |
158 | while(stream.Next()) | |
159 | { | |
160 | ||
161 | UInt_t ddl=stream.GetDDLNumber(); //returns 0,1,2 ... 13 | |
162 | if((UInt_t)(2*iCh)==ddl || (UInt_t)(2*iCh+1)==ddl) { | |
163 | for(Int_t row = 1; row <= AliHMPIDRawStream::kNRows; row++){ | |
164 | for(Int_t dil = 1; dil <= AliHMPIDRawStream::kNDILOGICAdd; dil++){ | |
165 | for(Int_t pad = 0; pad < AliHMPIDRawStream::kNPadAdd; pad++){ | |
166 | if(stream.GetCharge(ddl,row,dil,pad) < 1) continue; | |
167 | AliHMPIDDigit dig(stream.GetPad(ddl,row,dil,pad),stream.GetCharge(ddl,row,dil,pad)); | |
168 | if(!IsDigSurvive(&dig)) continue; | |
169 | new((*((TClonesArray*)fDig->At(iCh)))[iDigCnt++]) AliHMPIDDigit(dig); //add this digit to the tmp list | |
170 | }//pad | |
171 | }//dil | |
172 | }//row | |
173 | }//while | |
174 | } | |
175 | stream.Delete(); | |
176 | } | |
94b1fbfa | 177 | pDigTree->Fill(); |
21f61e25 | 178 | |
ae5a42aa | 179 | for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++)fDig->At(iCh)->Clear(); |
21f61e25 | 180 | |
94b1fbfa | 181 | AliDebug(1,"Stop."); |
182 | }//Reconstruct digits from raw digits | |
183 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
d76c31f4 | 184 | void AliHMPIDReconstructor::FillESD(TTree */*digitsTree*/, TTree */*clustersTree*/, AliESDEvent *pESD) const |
d3da6dc4 | 185 | { |
186 | // Calculates probability to be a electron-muon-pion-kaon-proton | |
187 | // from the given Cerenkov angle and momentum assuming no initial particle composition | |
188 | // (i.e. apriory probability to be the particle of the given sort is the same for all sorts) | |
189 | ||
190 | AliPID ppp; //needed | |
191 | Double_t pid[AliPID::kSPECIES],h[AliPID::kSPECIES]; | |
192 | ||
193 | for(Int_t iTrk=0;iTrk<pESD->GetNumberOfTracks();iTrk++){//ESD tracks loop | |
194 | AliESDtrack *pTrk = pESD->GetTrack(iTrk);// get next reconstructed track | |
195 | if(pTrk->GetHMPIDsignal()<=0){//HMPID does not find anything reasonable for this track, assign 0.2 for all species | |
196 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++) pid[iPart]=1.0/AliPID::kSPECIES; | |
197 | pTrk->SetHMPIDpid(pid); | |
198 | continue; | |
199 | } | |
200 | Double_t pmod = pTrk->GetP(); | |
201 | Double_t hTot=0; | |
202 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++){ | |
203 | Double_t mass = AliPID::ParticleMass(iPart); | |
204 | Double_t cosThetaTh = TMath::Sqrt(mass*mass+pmod*pmod)/(AliHMPIDParam::Instance()->MeanIdxRad()*pmod); | |
a1d55ff3 | 205 | if(cosThetaTh<1) //calculate the height of theoretical theta ckov on the gaus of experimental one |
206 | h[iPart] =TMath::Gaus(TMath::ACos(cosThetaTh),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE); | |
d3da6dc4 | 207 | else //beta < 1/ref. idx. => no light at all |
208 | h[iPart] =0 ; | |
209 | hTot +=h[iPart]; //total height of all theoretical heights for normalization | |
210 | }//species loop | |
211 | ||
212 | Double_t hMin=TMath::Gaus(pTrk->GetHMPIDsignal()-4*TMath::Sqrt(pTrk->GetHMPIDchi2()),pTrk->GetHMPIDsignal(),TMath::Sqrt(pTrk->GetHMPIDchi2()),kTRUE);//5 sigma protection | |
213 | ||
214 | for(Int_t iPart=0;iPart<AliPID::kSPECIES;iPart++)//species loop to assign probabilities | |
215 | if(hTot>hMin) | |
216 | pid[iPart]=h[iPart]/hTot; | |
217 | else //all theoretical values are far away from experemental one | |
218 | pid[iPart]=1.0/AliPID::kSPECIES; | |
219 | pTrk->SetHMPIDpid(pid); | |
220 | }//ESD tracks loop | |
a1d55ff3 | 221 | }//FillESD() |