[u/mrichter/AliRoot.git] / HMPID / HESDfromKin.C

AliRunLoader *gAL=0; 
Int_t gEvt=0; Int_t gMaxEvt=0;
TObjArray *pNmean,*pQthre;
TTree *gEsdTr;
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void HESDfromKin(const char *name="default")
{//simulate ESD from kinematics

  if(gSystem->IsFileInIncludePath("galice.root")){// tries to open session
    if(gAlice) delete gAlice;                                               //in case we execute this in aliroot delete default AliRun object 
    gAL=AliRunLoader::Open();                                                                    //try to open galice.root from current dir 
    gAL->LoadgAlice();                                                                           //take new AliRun object from galice.root   
    if(gAL->LoadHeader()) return;
    if(gAL->LoadKinematics()) return;

    AliLoader *pHL=gAL->GetDetectorLoader("HMPID");
    pHL->LoadRecPoints();
    AliESDEvent *pEsd = new AliESDEvent();   
    TFile *pEsdFl=TFile::Open("AliESDs.root","recreate"); 
    gEsdTr=new TTree("esdTree","Sim ESD from kinematics"); 
    pEsd->CreateStdContent();    pEsd->WriteToTree(gEsdTr);  //clm: new ESD write schema: see Task Force meeting 20th June, 2007
    gEsdTr->GetUserInfo()->Add(pEsd);                        //clm: TList has to be created for ReadFromTree method -- this was not needed by the old ESD
 
       
  }  else return;  

  if(!OpenCalib()) {Printf("Problems in OpenCalib!Bye.");return;}
    
  TString ttl=name;
  Bool_t htaCheck=ttl.Contains("HTA");
  if(!htaCheck) SimEsd(pHL,pEsd); else SimEsdHidden(pHL,pEsd);
  
  pEsdFl->cd();
  pEsdFl->Write();pEsdFl->Close();        
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void SimEsd(AliLoader *pHL,AliESDEvent *pEsd)
{
  Printf("-----------------------------------------------");
  Printf("| SimESD: Utility to embed ESD from kinematics|");
  Printf("-----------------------------------------------");
  AliHMPIDTracker::SetFieldMap(gAL->GetAliRun()->Field(),kTRUE);
  AliHMPID *pH=(AliHMPID*)gAL->GetAliRun()->GetDetector("HMPID");
  Int_t mtid=-1;
  Int_t iNevt=gAL->GetNumberOfEvents();
  pEsd->SetMagneticField(AliHMPIDTracker::GetBz());
  Printf("Number of events to process: %i",iNevt);
  for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
    if(!(iEvt%50)) Printf("Events processed %i",iEvt);
    gAL->GetEvent(iEvt);    
    pHL->TreeR()->GetEntry(0);
    AliStack *pStack=gAL->Stack();
    for(Int_t i=0;i<pStack->GetNtrack();i++){
      TParticle *pTrack=pStack->Particle(i); 
      mtid=pTrack->GetFirstMother();
      if(mtid>=0) continue; // only primaries
      if(pTrack->GetPDG()->Charge()==0) continue;
      AliESDtrack trk(pTrack); 
      Float_t xPc,yPc,xRa,yRa,thRa,phRa;
      Int_t iCh=AliHMPIDTracker::IntTrkCha(&trk,xPc,yPc,xRa,yRa,thRa,phRa);         //get chamber intersected by this track 
      if(iCh<0) {
        trk.SetHMPIDtrk(0,0,0,0);                                                                //no intersection found
        trk.SetHMPIDcluIdx   (99,99999);                                                         //chamber not found, mip not yet considered
        trk.SetHMPIDsignal(AliHMPIDRecon::kNotPerformed);                                        //ring reconstruction not yet performed
        continue;                                                           //no intersection at all, go after next track
      }
//      Printf(" particle analyzed %d with mtid %d is %s hitting chamber %d",i,mtid,pTrack->GetName(),iCh);
      trk.SetHMPIDcluIdx   (iCh,99999);                                                          //chamber not found, mip not yet considered
      trk.SetHMPIDtrk(xRa,yRa,thRa,phRa);                                                        //store initial infos
      pEsd->AddTrack(&trk);
    }// track loop
    
    AliHMPIDTracker::Recon(pEsd,pH->CluLst(),pNmean,pQthre);
// Perform PID
    
    for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){                                       //ESD tracks loop
      AliESDtrack *pTrk = pEsd->GetTrack(iTrk);                                                    //get reconstructed track    
      AliHMPIDPid pID;
      Double_t prob[5];
      pID.FindPid(pTrk,5,prob);
      pTrk->SetHMPIDpid(prob);
//      Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]*100,prob[1]*100,prob[2]*100,prob[3]*100,prob[4]*100);
    }
    
    gEsdTr->Fill();
    pEsd->Reset();
    
  }// event loop
  Printf("Events processed %i",iEvt);
  gAL->UnloadHeader();  gAL->UnloadKinematics();
}//Esd()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
void SimEsdHidden(AliLoader *pHL,AliESDEvent *pEsd)
{
  TFile *fout = new TFile("HTA.root","recreate");
  TH1F *hdC   = new TH1F("dC"  ,";delta Cerenkov (rad)",100,-0.2,0.2);
  TH1F *hCer  = new TH1F("Cer" ,"Theta Cerenkov (rad)",250,0.,0.75);
  TH2F *htvsp = new TH2F("tvsp",";momentum (GeV/c);theta Cerenkov (rad)",100,0.,5.,1000,0.,0.75);
  TH1F *hdth  = new TH1F("dth" ,";Delta theta Trk (mrad)",100,-250,250);
  TH1F *hdph  = new TH1F("dph" ,";Delta phi Trk (mrad)",100,-500,500);
  Double_t rd=TMath::RadToDeg();
  Printf("----------------------------------------------");
  Printf("| SimHTA:Utility to embed ESD from kinematics|");
  Printf("|     with  Hidden Track Algorithm (HTA)     |");
  Printf("----------------------------------------------");
  AliHMPIDTracker::SetFieldMap(gAL->GetAliRun()->Field(),kTRUE);
  AliHMPID *pH=(AliHMPID*)gAL->GetAliRun()->GetDetector("HMPID");
  Int_t mtid=-1;
  Int_t iNevt=gAL->GetNumberOfEvents();
  
  Printf("Number of events to process: %i",iNevt);
  
  for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
    if(!(iEvt%50)) Printf("Events processed %i",iEvt);
    gAL->GetEvent(iEvt);    
    pHL->TreeR()->GetEntry(0);
    AliStack *pStack=gAL->Stack();
    
    for(Int_t i=0;i<pStack->GetNtrack();i++){
      
      TParticle *pTrack=pStack->Particle(i); 
      mtid=pTrack->GetFirstMother();
      
      if(mtid>=0) continue; // only primaries
      
      //find the chamber that intersects HMPID
      AliESDtrack trk(pTrack);
      Float_t xPc,yPc,xRa,yRa,thRa,phRa;
      Int_t iCh=AliHMPIDTracker::IntTrkCha(&trk,xPc,yPc,xRa,yRa,thRa,phRa);         //get chamber intersected by this track
      if(iCh<0) continue;                                                           //no intersection at all, go after next track
      trk.SetHMPIDtrk(xRa,yRa,thRa,phRa);                                                        //store initial infos
      Float_t radX,radY,thetaTrk,phiTrk;
      trk.GetHMPIDtrk(radX,radY,thetaTrk,phiTrk);
//      Printf("simulated track theta %f phi %f",thetaTrk*rd,phiTrk*rd);
      TObjArray *pClus = pH->CluLst();
      
      if(AliHMPIDTracker::ReconHiddenTrk(iCh,0,&trk,(TClonesArray *)pClus->At(iCh),pNmean,pQthre)!=0) continue;
      
      pEsd->AddTrack(&trk);
      Double_t thetaCerSim = TMath::ACos(pTrack->Energy()/(1.292*pTrack->P()));
//      Printf(" theta Cerenkov simulated     %f",thetaCerSim);
//      Printf(" theta Cerenkov reconstructed %f",trk.GetHMPIDsignal());
      Float_t thetaFit,phiFit;
      trk.GetHMPIDtrk(radX,radY,thetaFit,phiFit);
//      Printf("reconstr. track theta %f phi %f",thetaFit*rd,phiFit*rd);
      
      // fill useful histos
      hdC->Fill(trk.GetHMPIDsignal()-thetaCerSim);
      hCer->Fill(trk.GetHMPIDsignal());
      htvsp->Fill(pTrack->P(),trk.GetHMPIDsignal());
      hdth->Fill((thetaFit-thetaTrk)*1000);
      hdph->Fill((phiFit-phiTrk)*1000);
    }// track loop
    pEsd->SetMagneticField(AliHMPIDTracker::GetBz());
    gEsdTr->Fill();
    pEsd->Reset();
  }// event loop
  Printf("Events processed %i",iEvt);
  fout->Write();
  fout->Close();
  delete fout;
  gAL->UnloadHeader();  gAL->UnloadKinematics();
}//EsdHidden()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Bool_t OpenCalib()
{
  AliCDBManager* pCDB = AliCDBManager::Instance();
  pCDB->SetDefaultStorage("local://$HOME");
  AliCDBEntry *pQthreEnt=pCDB->Get("HMPID/Calib/Qthre",0);
  AliCDBEntry *pNmeanEnt=pCDB->Get("HMPID/Calib/Nmean",0);
  
  if(!pQthreEnt || !pNmeanEnt) return kFALSE;
  
  pNmean=(TObjArray*)pNmeanEnt->GetObject(); 
  pQthre=(TObjArray*)pQthreEnt->GetObject(); 

  if(!pQthre || !pNmean) return kFALSE;  
  return kTRUE;
}
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Commit	Line	Data
d8770a0f	1	AliRunLoader *gAL=0;
d8770a0f	2	Int_t gEvt=0; Int_t gMaxEvt=0;
3df18479	3	TObjArray pNmean,pQthre;
d8770a0f	4	TTree *gEsdTr;
d8770a0f	5	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
e4290ede	6	void HESDfromKin(const char *name="default")
d8770a0f	7	{//simulate ESD from kinematics
	8
	9	if(gSystem->IsFileInIncludePath("galice.root")){// tries to open session
	10	if(gAlice) delete gAlice; //in case we execute this in aliroot delete default AliRun object
	11	gAL=AliRunLoader::Open(); //try to open galice.root from current dir
	12	gAL->LoadgAlice(); //take new AliRun object from galice.root
	13	if(gAL->LoadHeader()) return;
	14	if(gAL->LoadKinematics()) return;
	15
	16	AliLoader *pHL=gAL->GetDetectorLoader("HMPID");
	17	pHL->LoadRecPoints();
6e06db1d	18	AliESDEvent *pEsd = new AliESDEvent();
d8770a0f	19	TFile *pEsdFl=TFile::Open("AliESDs.root","recreate");
d8770a0f	20	gEsdTr=new TTree("esdTree","Sim ESD from kinematics");
e4290ede	21	pEsd->CreateStdContent(); pEsd->WriteToTree(gEsdTr); //clm: new ESD write schema: see Task Force meeting 20th June, 2007
	22	gEsdTr->GetUserInfo()->Add(pEsd); //clm: TList has to be created for ReadFromTree method -- this was not needed by the old ESD
	23
	24
d8770a0f	25	} else return;
d8770a0f	26
3df18479	27	if(!OpenCalib()) {Printf("Problems in OpenCalib!Bye.");return;}
d8770a0f	28
c0d7adf8	29	TString ttl=name;
	30	Bool_t htaCheck=ttl.Contains("HTA");
	31	if(!htaCheck) SimEsd(pHL,pEsd); else SimEsdHidden(pHL,pEsd);
e4290ede	32
e4290ede	33	pEsdFl->cd();
d8770a0f	34	pEsdFl->Write();pEsdFl->Close();
	35	}
	36	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6e06db1d	37	void SimEsd(AliLoader pHL,AliESDEvent pEsd)
d8770a0f	38	{
c0d7adf8	39	Printf("-----------------------------------------------");
	40	Printf("\| SimESD: Utility to embed ESD from kinematics\|");
	41	Printf("-----------------------------------------------");
d8770a0f	42	AliHMPIDTracker::SetFieldMap(gAL->GetAliRun()->Field(),kTRUE);
	43	AliHMPID pH=(AliHMPID)gAL->GetAliRun()->GetDetector("HMPID");
	44	Int_t mtid=-1;
	45	Int_t iNevt=gAL->GetNumberOfEvents();
1b46ef29	46	pEsd->SetMagneticField(AliHMPIDTracker::GetBz());
d8770a0f	47	Printf("Number of events to process: %i",iNevt);
	48	for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
	49	if(!(iEvt%50)) Printf("Events processed %i",iEvt);
	50	gAL->GetEvent(iEvt);
	51	pHL->TreeR()->GetEntry(0);
	52	AliStack *pStack=gAL->Stack();
	53	for(Int_t i=0;i<pStack->GetNtrack();i++){
	54	TParticle *pTrack=pStack->Particle(i);
	55	mtid=pTrack->GetFirstMother();
	56	if(mtid>=0) continue; // only primaries
1b46ef29	57	if(pTrack->GetPDG()->Charge()==0) continue;
e4290ede	58	AliESDtrack trk(pTrack);
39cd22e6	59	Float_t xPc,yPc,xRa,yRa,thRa,phRa;
	60	Int_t iCh=AliHMPIDTracker::IntTrkCha(&trk,xPc,yPc,xRa,yRa,thRa,phRa); //get chamber intersected by this track
	61	if(iCh<0) {
	62	trk.SetHMPIDtrk(0,0,0,0); //no intersection found
	63	trk.SetHMPIDcluIdx (99,99999); //chamber not found, mip not yet considered
	64	trk.SetHMPIDsignal(AliHMPIDRecon::kNotPerformed); //ring reconstruction not yet performed
	65	continue; //no intersection at all, go after next track
	66	}
1b46ef29	67	// Printf(" particle analyzed %d with mtid %d is %s hitting chamber %d",i,mtid,pTrack->GetName(),iCh);
39cd22e6	68	trk.SetHMPIDcluIdx (iCh,99999); //chamber not found, mip not yet considered
39cd22e6	69	trk.SetHMPIDtrk(xRa,yRa,thRa,phRa); //store initial infos
d8770a0f	70	pEsd->AddTrack(&trk);
d8770a0f	71	}// track loop
ac66a50d	72
	73	AliHMPIDTracker::Recon(pEsd,pH->CluLst(),pNmean,pQthre);
	74	// Perform PID
	75
	76	for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //ESD tracks loop
	77	AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track
	78	AliHMPIDPid pID;
	79	Double_t prob[5];
	80	pID.FindPid(pTrk,5,prob);
d35d51b7	81	pTrk->SetHMPIDpid(prob);
ac66a50d	82	// Printf(" Prob e- %6.2f mu %6.2f pi %6.2f k %6.2f p %6.2f",prob[0]100,prob[1]100,prob[2]100,prob[3]100,prob[4]*100);
	83	}
	84
d8770a0f	85	gEsdTr->Fill();
d8770a0f	86	pEsd->Reset();
ac66a50d	87
d8770a0f	88	}// event loop
	89	Printf("Events processed %i",iEvt);
	90	gAL->UnloadHeader(); gAL->UnloadKinematics();
3b49956b	91	}//Esd()
d8770a0f	92	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6e06db1d	93	void SimEsdHidden(AliLoader pHL,AliESDEvent pEsd)
3b49956b	94	{
1b46ef29	95	TFile *fout = new TFile("HTA.root","recreate");
	96	TH1F *hdC = new TH1F("dC" ,";delta Cerenkov (rad)",100,-0.2,0.2);
	97	TH1F *hCer = new TH1F("Cer" ,"Theta Cerenkov (rad)",250,0.,0.75);
	98	TH2F *htvsp = new TH2F("tvsp",";momentum (GeV/c);theta Cerenkov (rad)",100,0.,5.,1000,0.,0.75);
	99	TH1F *hdth = new TH1F("dth" ,";Delta theta Trk (mrad)",100,-250,250);
	100	TH1F *hdph = new TH1F("dph" ,";Delta phi Trk (mrad)",100,-500,500);
3b49956b	101	Double_t rd=TMath::RadToDeg();
c0d7adf8	102	Printf("----------------------------------------------");
	103	Printf("\| SimHTA:Utility to embed ESD from kinematics\|");
	104	Printf("\| with Hidden Track Algorithm (HTA) \|");
	105	Printf("----------------------------------------------");
d8770a0f	106	AliHMPIDTracker::SetFieldMap(gAL->GetAliRun()->Field(),kTRUE);
	107	AliHMPID pH=(AliHMPID)gAL->GetAliRun()->GetDetector("HMPID");
	108	Int_t mtid=-1;
	109	Int_t iNevt=gAL->GetNumberOfEvents();
1b46ef29	110
d8770a0f	111	Printf("Number of events to process: %i",iNevt);
1b46ef29	112
d8770a0f	113	for(Int_t iEvt=0;iEvt<iNevt;iEvt++){//events loop
d8770a0f	114	if(!(iEvt%50)) Printf("Events processed %i",iEvt);
3b49956b	115	gAL->GetEvent(iEvt);
d8770a0f	116	pHL->TreeR()->GetEntry(0);
3b49956b	117	AliStack *pStack=gAL->Stack();
1b46ef29	118
3b49956b	119	for(Int_t i=0;i<pStack->GetNtrack();i++){
1b46ef29	120
3b49956b	121	TParticle *pTrack=pStack->Particle(i);
3b49956b	122	mtid=pTrack->GetFirstMother();
1b46ef29	123
3b49956b	124	if(mtid>=0) continue; // only primaries
1b46ef29	125
3b49956b	126	//find the chamber that intersects HMPID
3b49956b	127	AliESDtrack trk(pTrack);
39cd22e6	128	Float_t xPc,yPc,xRa,yRa,thRa,phRa;
39cd22e6	129	Int_t iCh=AliHMPIDTracker::IntTrkCha(&trk,xPc,yPc,xRa,yRa,thRa,phRa); //get chamber intersected by this track
3b49956b	130	if(iCh<0) continue; //no intersection at all, go after next track
39cd22e6	131	trk.SetHMPIDtrk(xRa,yRa,thRa,phRa); //store initial infos
3b49956b	132	Float_t radX,radY,thetaTrk,phiTrk;
3b49956b	133	trk.GetHMPIDtrk(radX,radY,thetaTrk,phiTrk);
3df18479	134	// Printf("simulated track theta %f phi %f",thetaTrkrd,phiTrkrd);
3b49956b	135	TObjArray *pClus = pH->CluLst();
1b46ef29	136
39cd22e6	137	if(AliHMPIDTracker::ReconHiddenTrk(iCh,0,&trk,(TClonesArray *)pClus->At(iCh),pNmean,pQthre)!=0) continue;
1b46ef29	138
3b49956b	139	pEsd->AddTrack(&trk);
3b49956b	140	Double_t thetaCerSim = TMath::ACos(pTrack->Energy()/(1.292*pTrack->P()));
3df18479	141	// Printf(" theta Cerenkov simulated %f",thetaCerSim);
3df18479	142	// Printf(" theta Cerenkov reconstructed %f",trk.GetHMPIDsignal());
1b46ef29	143	Float_t thetaFit,phiFit;
	144	trk.GetHMPIDtrk(radX,radY,thetaFit,phiFit);
	145	// Printf("reconstr. track theta %f phi %f",thetaFitrd,phiFitrd);
	146
	147	// fill useful histos
3df18479	148	hdC->Fill(trk.GetHMPIDsignal()-thetaCerSim);
	149	hCer->Fill(trk.GetHMPIDsignal());
	150	htvsp->Fill(pTrack->P(),trk.GetHMPIDsignal());
1b46ef29	151	hdth->Fill((thetaFit-thetaTrk)*1000);
1b46ef29	152	hdph->Fill((phiFit-phiTrk)*1000);
3b49956b	153	}// track loop
d8770a0f	154	pEsd->SetMagneticField(AliHMPIDTracker::GetBz());
	155	gEsdTr->Fill();
	156	pEsd->Reset();
	157	}// event loop
	158	Printf("Events processed %i",iEvt);
1b46ef29	159	fout->Write();
	160	fout->Close();
	161	delete fout;
d8770a0f	162	gAL->UnloadHeader(); gAL->UnloadKinematics();
3b49956b	163	}//EsdHidden()
d8770a0f	164	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3df18479	165	Bool_t OpenCalib()
d8770a0f	166	{
	167	AliCDBManager* pCDB = AliCDBManager::Instance();
	168	pCDB->SetDefaultStorage("local://$HOME");
	169	AliCDBEntry *pQthreEnt=pCDB->Get("HMPID/Calib/Qthre",0);
	170	AliCDBEntry *pNmeanEnt=pCDB->Get("HMPID/Calib/Nmean",0);
	171
3df18479	172	if(!pQthreEnt \|\| !pNmeanEnt) return kFALSE;
d8770a0f	173
d8770a0f	174	pNmean=(TObjArray*)pNmeanEnt->GetObject();
3df18479	175	pQthre=(TObjArray*)pQthreEnt->GetObject();
	176
	177	if(!pQthre \|\| !pNmean) return kFALSE;
	178	return kTRUE;
d8770a0f	179	}
d8770a0f	180	//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++