Bug in area evaluation for reconstruction of ring. Important for PbPb events (high...

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

diff --git a/HMPID/HESDfromKin.C b/HMPID/HESDfromKin.C
index df9b7ebf6ffbbd428b3916b320213ddd4134563e..e62652a43fdd90260da867b074916fcc419ad387 100644 (file)
--- a/HMPID/HESDfromKin.C
+++ b/HMPID/HESDfromKin.C
@@ -3,7 +3,7 @@ Int_t gEvt=0; Int_t gMaxEvt=0;
 TObjArray *pNmean;
 TTree *gEsdTr;
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void HESDfromKin()
+void HESDfromKin(const char *name="default")
 {//simulate ESD from kinematics
 
   if(gSystem->IsFileInIncludePath("galice.root")){// tries to open session
@@ -15,24 +15,30 @@ void HESDfromKin()
 
     AliLoader *pHL=gAL->GetDetectorLoader("HMPID");
     pHL->LoadRecPoints();
-    AliESD *pEsd = new AliESD();   
+    AliESDEvent *pEsd = new AliESDEvent();   
     TFile *pEsdFl=TFile::Open("AliESDs.root","recreate"); 
     gEsdTr=new TTree("esdTree","Sim ESD from kinematics"); 
-    gEsdTr->Branch("ESD", &pEsd);
-         
+    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;  
 
   OpenCalib();
     
-  SimEsd(pHL,pEsd);
-//  SimEsdHidden(pHL,pEsd);
+  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,AliESD *pEsd)
+void SimEsd(AliLoader *pHL,AliESDEvent *pEsd)
 {
-  Printf("---------okokokok");
+  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;
@@ -47,7 +53,7 @@ void SimEsd(AliLoader *pHL,AliESD *pEsd)
       TParticle *pTrack=pStack->Particle(i); 
       mtid=pTrack->GetFirstMother();
       if(mtid>=0) continue; // only primaries
-      AliESDtrack trk(pTrack);
+      AliESDtrack trk(pTrack); 
       pEsd->AddTrack(&trk);
       AliHMPIDTracker::Recon(pEsd,pH->CluLst(),pNmean);
     }// track loop
@@ -57,10 +63,15 @@ void SimEsd(AliLoader *pHL,AliESD *pEsd)
   }// event loop
   Printf("Events processed %i",iEvt);
   gAL->UnloadHeader();  gAL->UnloadKinematics();
-}//EsdFromStack()
+}//Esd()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-void SimEsdHidden(AliLoader *pHL,AliESD *pEsd)
-{  
+void SimEsdHidden(AliLoader *pHL,AliESDEvent *pEsd)
+{
+  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;
@@ -68,25 +79,37 @@ void SimEsdHidden(AliLoader *pHL,AliESD *pEsd)
   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);
+    gAL->GetEvent(iEvt);    
     pHL->TreeR()->GetEntry(0);
-    AliESDtrack trk;
-// Hidden Track
-    for(int iCh=AliHMPIDDigit::kMinCh;iCh<=AliHMPIDDigit::kMaxCh;iCh++){
-      AliESDtrack trk;
-       if(AliHMPIDTracker::ReconHiddenTrk(iCh,&trk,pH->CluLst(),pNmean);) continue;
-       pEsd->AddTrack(&trk);
-       Printf(" theta Cerenkov reconstructed %f",trk.GetHMPIDsignal());
-    }
-//    AliHMPIDTracker::Recon(pEsd,pH->CluLst(),pNmean);
-//      
+    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;
+      Int_t iCh=AliHMPIDTracker::IntTrkCha(&trk,xPc,yPc);                           //get chamber intersected by this track 
+      if(iCh<0) continue;                                                           //no intersection at all, go after next track
+      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,&trk,(TClonesArray *)pClus->At(iCh),pNmean)!=0) continue;
+      trk.GetHMPIDtrk(radX,radY,thetaTrk,phiTrk);
+      Printf("reconstr. track theta %f phi %f",thetaTrk*rd,phiTrk*rd);
+      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());
+    }// track loop
     pEsd->SetMagneticField(AliHMPIDTracker::GetBz());
     gEsdTr->Fill();
     pEsd->Reset();
   }// event loop
   Printf("Events processed %i",iEvt);
   gAL->UnloadHeader();  gAL->UnloadKinematics();
-}//EsdFromStack()
+}//EsdHidden()
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 void OpenCalib()
 {