First MC version
[u/mrichter/AliRoot.git] / HMPID / AliHMPIDReconstructor.cxx
CommitLineData
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()
9ebbddd4 23#include "AliHMPIDPid.h" //FillEsd()
24#include "AliHMPIDParam.h" //FillEsd()
a0e5c1b9 25#include <AliCDBEntry.h> //ctor
26#include <AliCDBManager.h> //ctor
555a0dbf 27#include <AliESDEvent.h> //FillEsd()
a0e5c1b9 28#include <AliRawReader.h> //Reconstruct() for raw digits
65201c45 29#include <AliLog.h> //
d76c31f4 30#include "AliHMPIDRawStream.h" //ConvertDigits()
c458aab6 31#include "AliHMPIDRecoParamV1.h" //ctor
451299f3 32
d3da6dc4 33ClassImp(AliHMPIDReconstructor)
34
aed5907d 35Int_t AliHMPIDReconstructor::fgStreamLevel = 0; // stream (debug) level
36
d3da6dc4 37//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
a0e5c1b9 38AliHMPIDReconstructor::AliHMPIDReconstructor():AliReconstructor(),fUserCut(0),fDaqSig(0),fDig(0),fClu(0)
94b1fbfa 39{
40//
41//ctor
42//
909bfbdc 43 AliHMPIDParam::Instance(); //geometry loaded for reconstruction
451299f3 44
14dc2e6c 45 fUserCut = new Int_t[7];
ae5a42aa 46 fClu=new TObjArray(AliHMPIDParam::kMaxCh+1); fClu->SetOwner(kTRUE);
47 fDig=new TObjArray(AliHMPIDParam::kMaxCh+1); fDig->SetOwner(kTRUE);
9cc1a411 48
ae5a42aa 49 for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){
56c73976 50 fDig->AddAt(new TClonesArray("AliHMPIDDigit",24000),i);
51 TClonesArray *pClus = new TClonesArray("AliHMPIDCluster",24000);
611e810d 52 pClus->SetUniqueID(i);
53 fClu->AddAt(pClus,i);
94b1fbfa 54 }
451299f3 55
56
57 if(AliHMPIDReconstructor::GetRecoParam()) {
65201c45 58 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
451299f3 59 fUserCut[iCh] = AliHMPIDReconstructor::GetRecoParam()->GetHmpUserCut(iCh);
c458aab6 60 AliDebug(1,Form("UserCut successfully loaded (from AliHMPIDRecoParamV1) for chamber %i -> %i ",iCh,fUserCut[iCh]));
65201c45 61 }
451299f3 62 }
55a829a5 63 else {
65201c45 64 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
65 fUserCut[iCh] = 3; // minimal requirement for sigma cut
66 AliDebug(1,Form("UserCut loaded from defaults for chamber %i -> %i ",iCh,fUserCut[iCh]));
c458aab6 67 AliDebug(1,Form("Cannot get AliHMPIDRecoParamV1!"));
451299f3 68 }
85692374 69 }
451299f3 70
71
49881df7 72
9cc1a411 73 AliCDBEntry *pDaqSigEnt =AliCDBManager::Instance()->Get("HMPID/Calib/DaqSig"); //contains TObjArray of TObjArray 14 TMatrixF sigmas values for pads
74 if(!pDaqSigEnt) AliFatal("No pedestals from DAQ!");
75 fDaqSig = (TObjArray*)pDaqSigEnt->GetObject();
76 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop
4f9a834e 77 AliDebug(1,Form("DaqSigCut successfully loaded for chamber %i -> %i ",iCh,(Int_t)fDaqSig->At(iCh)->GetUniqueID()));
a0e5c1b9 78 }
94b1fbfa 79}//AliHMPIDReconstructor
80//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
54104a7c 81void AliHMPIDReconstructor::Dig2Clu(TObjArray *pDigAll,TObjArray *pCluAll,Int_t *pUserCut,Bool_t isTryUnfold)
d3da6dc4 82{
83// Finds all clusters for a given digits list provided not empty. Currently digits list is a list of all digits for a single chamber.
84// Puts all found clusters in separate lists, one per clusters.
3c6274c1 85// Arguments: pDigAll - list of digits for all chambers
86// pCluAll - list of clusters for all chambers
d3da6dc4 87// isTryUnfold - flag to choose between CoG and Mathieson fitting
88// Returns: none
ae5a42aa 89 TMatrixF padMap(AliHMPIDParam::kMinPx,AliHMPIDParam::kMaxPcx,AliHMPIDParam::kMinPy,AliHMPIDParam::kMaxPcy); //pads map for single chamber 0..159 x 0..143
3c6274c1 90
ae5a42aa 91 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){ //chambers loop
3c6274c1 92 TClonesArray *pDigCur=(TClonesArray*)pDigAll->At(iCh); //get list of digits for current chamber
93 if(pDigCur->GetEntriesFast()==0) continue; //no digits for current chamber
d3da6dc4 94
3c6274c1 95 padMap=(Float_t)-1; //reset map to -1 (means no digit for this pad)
96 TClonesArray *pCluCur=(TClonesArray*)pCluAll->At(iCh); //get list of clusters for current chamber
97
98 for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop to fill pads map
99 AliHMPIDDigit *pDig= (AliHMPIDDigit*)pDigCur->At(iDig); //get current digit
100 padMap( pDig->PadChX(), pDig->PadChY() )=iDig; //fill the map, (padx,pady) cell takes digit index
101 }//digits loop to fill digits map
102
103 AliHMPIDCluster clu; //tmp cluster to be used as current
3c6274c1 104 for(Int_t iDig=0;iDig<pDigCur->GetEntriesFast();iDig++){ //digits loop for current chamber
105 AliHMPIDDigit *pDig=(AliHMPIDDigit*)pDigCur->At(iDig); //take current digit
106 if(!(pDig=UseDig(pDig->PadChX(),pDig->PadChY(),pDigCur,&padMap))) continue; //this digit is already taken in FormClu(), go after next digit
107 FormClu(&clu,pDig,pDigCur,&padMap); //form cluster starting from this digit by recursion
54104a7c 108 clu.Solve(pCluCur,pUserCut,isTryUnfold); //solve this cluster and add all unfolded clusters to provided list
3c6274c1 109 clu.Reset(); //empty current cluster
110 }//digits loop for current chamber
111 }//chambers loop
d3da6dc4 112}//Dig2Clu()
113//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
114void AliHMPIDReconstructor::FormClu(AliHMPIDCluster *pClu,AliHMPIDDigit *pDig,TClonesArray *pDigLst,TMatrixF *pDigMap)
115{
a1d55ff3 116// Forms the initial cluster as a combination of all adjascent digits. Starts from the given digit then calls itself recursevly for all neighbours.
d3da6dc4 117// Arguments: pClu - pointer to cluster being formed
a1d55ff3 118// Returns: none
d3da6dc4 119 pClu->DigAdd(pDig);//take this digit in cluster
120
3c6274c1 121 Int_t cnt=0,cx[4],cy[4];
d3da6dc4 122
ae5a42aa 123 if(pDig->PadPcX() != AliHMPIDParam::kMinPx){cx[cnt]=pDig->PadChX()-1; cy[cnt]=pDig->PadChY() ;cnt++;} //left
124 if(pDig->PadPcX() != AliHMPIDParam::kMaxPx){cx[cnt]=pDig->PadChX()+1; cy[cnt]=pDig->PadChY() ;cnt++;} //right
125 if(pDig->PadPcY() != AliHMPIDParam::kMinPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()-1;cnt++;} //down
126 if(pDig->PadPcY() != AliHMPIDParam::kMaxPy){cx[cnt]=pDig->PadChX() ; cy[cnt]=pDig->PadChY()+1;cnt++;} //up
d3da6dc4 127
a1d55ff3 128 for (Int_t i=0;i<cnt;i++){//neighbours loop
3c6274c1 129 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 130 }//neighbours loop
d3da6dc4 131}//FormClu()
132//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
94b1fbfa 133void AliHMPIDReconstructor::Reconstruct(TTree *pDigTree,TTree *pCluTree)const
d3da6dc4 134{
135//Invoked by AliReconstruction to convert digits to clusters i.e. reconstruct simulated data
94b1fbfa 136//Arguments: pDigTree - pointer to Digit tree
137// pCluTree - poitner to Cluster tree
d3da6dc4 138// Returns: none
139 AliDebug(1,"Start.");
ae5a42aa 140 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++) {
56c73976 141 pCluTree->Branch(Form("HMPID%d",iCh),&((*fClu)[iCh]),7);
94b1fbfa 142 pDigTree->SetBranchAddress(Form("HMPID%d",iCh),&((*fDig)[iCh]));
143 }
144 pDigTree->GetEntry(0);
54104a7c 145 Dig2Clu(fDig,fClu,fUserCut); //cluster finder
94b1fbfa 146 pCluTree->Fill(); //fill tree for current event
147
ae5a42aa 148 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){
94b1fbfa 149 fDig->At(iCh)->Clear();
150 fClu->At(iCh)->Clear();
151 }
d3da6dc4 152
d3da6dc4 153 AliDebug(1,"Stop.");
154}//Reconstruct(for simulated digits)
a1d55ff3 155//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
94b1fbfa 156void 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.");
21f61e25 163// Int_t digcnt=0;
164
56c73976 165 Int_t iDigCnt[7]={0,0,0,0,0,0,0};
21f61e25 166
56c73976 167 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++){
168 pDigTree->Branch(Form("HMPID%d",iCh),&((*fDig)[iCh]));
169 }
21f61e25 170
56c73976 171 AliHMPIDRawStream stream(pRR);
172
173 while(stream.Next())
174 {
175 Int_t ch = AliHMPIDParam::DDL2C(stream.GetDDLNumber());
176 for(Int_t iPad=0;iPad<stream.GetNPads();iPad++) {
177 AliHMPIDDigit dig(stream.GetPadArray()[iPad],stream.GetChargeArray()[iPad]);
178 if(!IsDigSurvive(&dig)) continue;
179 new((*((TClonesArray*)fDig->At(ch)))[iDigCnt[ch]++]) AliHMPIDDigit(dig); //add this digit to the tmp list
21f61e25 180 }
21f61e25 181 }
56c73976 182
94b1fbfa 183 pDigTree->Fill();
21f61e25 184
ae5a42aa 185 for(Int_t iCh=AliHMPIDParam::kMinCh;iCh<=AliHMPIDParam::kMaxCh;iCh++)fDig->At(iCh)->Clear();
21f61e25 186
94b1fbfa 187 AliDebug(1,"Stop.");
188}//Reconstruct digits from raw digits
189//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
d76c31f4 190void AliHMPIDReconstructor::FillESD(TTree */*digitsTree*/, TTree */*clustersTree*/, AliESDEvent *pESD) const
d3da6dc4 191{
3278403b 192// Fill ESD with all the infos from HMPID
193// Probability vector from AliHMPIDPid
194//...
9eb30f08 195 AliHMPIDPid pID;
dac53a45 196 Double_t prob[AliPID::kSPECIES];
9eb30f08 197
198 for(Int_t iTrk=0;iTrk<pESD->GetNumberOfTracks();iTrk++){//ESD tracks loop
199 AliESDtrack *pTrk = pESD->GetTrack(iTrk);// get next reconstructed track
dac53a45 200 pID.FindPid(pTrk,AliPID::kSPECIES,prob);
201 pTrk->SetHMPIDpid(prob);
9eb30f08 202 }//ESD tracks loop
a1d55ff3 203}//FillESD()