#include "AliHMPIDTracker.h" //class header
#include "AliHMPIDCluster.h" //GetTrackPoint(),PropagateBack()
#include "AliHMPIDParam.h" //GetTrackPoint(),PropagateBack()
-#include "AliHMPIDRecon.h" //PropagateBack()
-#include <AliESD.h> //PropagateBack()
+#include "AliHMPIDRecon.h" //Recon()
+#include <AliESDEvent.h> //PropagateBack(),Recon()
+#include <AliESDtrack.h> //Intersect()
#include <AliRun.h> //GetTrackPoint(),PropagateBack()
#include <AliTrackPointArray.h> //GetTrackPoint()
#include <AliAlignObj.h> //GetTrackPoint()
+#include <AliCDBManager.h> //PropageteBack()
+#include <AliCDBEntry.h> //PropageteBack()
+//.
+// HMPID base class fo tracking
+//.
+//.
+//.
ClassImp(AliHMPIDTracker)
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+AliHMPIDTracker::AliHMPIDTracker():AliTracker()
+{
+// ctor. Create TObjArray of TClonesArray of AliHMPIDCluster
+//
+//
+ fClu=new TObjArray(AliHMPIDParam::kMaxCh+1); fClu->SetOwner(kTRUE);
+ for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) fClu->AddAt(new TClonesArray("AliHMPIDCluster"),i);
+}//ctor
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Bool_t AliHMPIDTracker::GetTrackPoint(Int_t idx, AliTrackPoint& point) const
{
// point- reference to the object where to store the point
// Returns: status of operation if FALSE then AliReconstruction::WriteAlignmentData() do not store this point to array of points for current track.
if(idx<0) return kFALSE; //no MIP cluster assigned to this track in PropagateBack()
- Int_t iCham=idx/1000000;
- Int_t iClu=idx%1000000;
- point.SetVolumeID(AliAlignObj::LayerToVolUID(AliAlignObj::kHMPID,iCham-1));//layer and chamber number
- AliHMPID *pRich=((AliHMPID*)gAlice->GetDetector("HMPID"));
- AliHMPIDCluster *pClu=(AliHMPIDCluster*)pRich->CluLst(iCham)->UncheckedAt(iClu);//get pointer to cluster
+ Int_t iCham=idx/1000000; Int_t iClu=idx%1000000;
+ point.SetVolumeID(AliGeomManager::LayerToVolUID(AliGeomManager::kHMPID,iCham-1));//layer and chamber number
+ TClonesArray *pArr=(TClonesArray*)(*fClu)[iCham];
+ AliHMPIDCluster *pClu=(AliHMPIDCluster*)pArr->UncheckedAt(iClu);//get pointer to cluster
Double_t mars[3];
AliHMPIDParam::Instance()->Lors2Mars(iCham,pClu->X(),pClu->Y(),mars);
point.SetXYZ(mars[0],mars[1],mars[2]);
return kTRUE;
-}
+}//GetTrackPoint()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliHMPIDTracker::IntTrkCha(AliESDtrack *pTrk,Float_t &xPc,Float_t &yPc)
+{
+// Static method to find intersection in between given track and HMPID chambers
+// Arguments: pTrk- ESD track; xPc,yPc- track intersection with PC in LORS [cm]
+// Returns: intersected chamber ID or -1
+ AliHMPIDParam *pParam=AliHMPIDParam::Instance();
+ Float_t xRa=0,yRa=0,theta=0,phi=0; //track intersection at PC and angles at RAD, LORS
+ for(Int_t i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++){ //chambers loop
+ Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Point(i,p1,AliHMPIDParam::kRad); //point & norm for middle of radiator plane
+ Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Point(i,p2,AliHMPIDParam::kPc); //point & norm for entrance to PC plane
+ if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue; //try to intersect track with the middle of radiator
+ if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue; //try to intersect track with PC
+ pParam->Mars2LorsVec(i,n1,theta,phi); //track angles at RAD
+ pParam->Mars2Lors (i,p1,xRa,yRa); //TRKxRAD position
+ pParam->Mars2Lors (i,p2,xPc,yPc); //TRKxPC position
+ if(AliHMPIDParam::IsInside(xPc,yPc,pParam->DistCut())==kFALSE) continue; //not in active area
+ pTrk->SetHMPIDtrk (xRa,yRa,theta,phi); //store track intersection info
+ pTrk->SetHMPIDcluIdx (i,0);
+ return i;
+ } //chambers loop
+ return -1; //no intersection with HMPID chambers
+}//IntTrkCha()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Int_t AliHMPIDTracker::LoadClusters(TTree *pCluTree)
{
-// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control
+// Interface callback methode invoked from AliReconstruction::RunTracking() to load HMPID clusters before PropagateBack() gets control. Done once per event.
// Arguments: pCluTree- pointer to clusters tree got by AliHMPIDLoader::LoadRecPoints("read") then AliHMPIDLoader::TreeR()
// Returns: error code (currently ignored in AliReconstruction::RunTraking())
- AliDebug(1,"Start."); pCluTree->GetEntry(0); AliDebug(1,"Stop."); return 0;
-}
+ for(int i=AliHMPIDParam::kMinCh;i<=AliHMPIDParam::kMaxCh;i++) pCluTree->SetBranchAddress(Form("HMPID%d",i),&((*fClu)[i]));
+ pCluTree->GetEntry(0);
+ return 0;
+}//LoadClusters()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-Int_t AliHMPIDTracker::Recon(AliESD *pESD,TObjArray *pCluAll)
+Int_t AliHMPIDTracker::PropagateBack(AliESDEvent *pEsd)
{
-// Interface callback methode invoked by AliRecontruction::RunTracking() during tracking after TOF. It's done just once per event
-// Arguments: pESD - pointer to Event Summary Data class instance which contains a list of tracks
-// Returns: error code, 0 if no errors
- Int_t iNtracks=pESD->GetNumberOfTracks(); AliDebugClass(1,Form("Start with %i tracks",iNtracks));
- AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor
-
- AliHMPIDParam *pParam=AliHMPIDParam::Instance();
-
- for(Int_t iTrk=0;iTrk<iNtracks;iTrk++){ //ESD tracks loop
- AliESDtrack *pTrk = pESD->GetTrack(iTrk); //get next reconstructed track
-
- Float_t xRa=0,yRa=0,xPc=0,yPc=0,th=0,ph=0; //track intersection point and angles, LORS
- Int_t iCh=-1; //intersected chamber
- for(Int_t i=0;i<7;i++){ //chambers loop
- Double_t p1[3],n1[3]; pParam->Norm(i,n1); pParam->Lors2Mars(i,0,0,p1,AliHMPIDParam::kRad); //point & norm for RAD
- Double_t p2[3],n2[3]; pParam->Norm(i,n2); pParam->Lors2Mars(i,0,0,p2,AliHMPIDParam::kPc); //point & norm for PC
-
- if(pTrk->Intersect(p1,n1,-GetBz())==kFALSE) continue; //try to intersect track with the middle of radiator
- if(pTrk->Intersect(p2,n2,-GetBz())==kFALSE) continue; //try to intersect track with PC
-
- pParam->Mars2LorsVec(i,n1,th,ph); //track angles
- pParam->Mars2Lors (i,p1,xRa,yRa); //TRKxRAD position
- pParam->Mars2Lors (i,p2,xPc,yPc); //TRKxPC position
-
- if(AliHMPIDDigit::IsInside(xPc,yPc)==kFALSE) continue; //not in active area
- iCh=i;
- break;
- }//chambers loop
-
- if(iCh==-1) continue; //no intersection at all, go after next track
-
- TClonesArray *pCluLst=(TClonesArray *)pCluAll->At(iCh); //get clusters list for intersected chamber
-
- Double_t dMin=999; //distance between track-PC intersection point and current cluster
- Int_t iMip=-1; //index of cluster nearest to intersection point
- for(Int_t iClu=0;iClu<pCluLst->GetEntries();iClu++){ //clusters loop for intersected chamber
- AliHMPIDCluster *pClu=(AliHMPIDCluster*)pCluLst->At(iClu); //get pointer to current cluster
- if(pClu->Q()<100) continue; //QDC is incompartible with mip, go after another one
-
- Float_t dX=xPc-pClu->X(); //distance between current cluster and intersection point
- Float_t dY=yPc-pClu->Y();
- Float_t d =TMath::Sqrt(dX*dX+dY*dY);
-
- if( d < dMin) {iMip=iClu; dMin=d;} //current cluster is closer, overwrite data for min cluster
- }//clusters loop for intersected chamber
+// Interface pure virtual in AliTracker. Invoked from AliReconstruction::RunTracking() after invocation of AliTracker::LoadClusters() once per event
+// Agruments: pEsd - pointer to ESD
+// Returns: error code
+ AliCDBEntry *pNmeanEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Nmean"); //contains TObjArray of 21 TF1
+ AliCDBEntry *pQthreEnt =AliCDBManager::Instance()->Get("HMPID/Calib/Qthre"); //contains TObjArray of 7 TF1
+ if(!pNmeanEnt) AliFatal("No Nmean C6F14 ");
+ if(!pQthreEnt) AliFatal("No Qthre");
- pTrk->SetHMPIDtrk (xPc,yPc,th,ph); //store track info
- if(iMip==-1) {pTrk->SetHMPIDsignal (kMipQdcCut); continue;} //no clusters with QDC more the threshold at all
-
- AliHMPIDCluster *pMipClu=(AliHMPIDCluster*)pCluLst->At(iMip); //take mip cluster
-
- pTrk->SetHMPIDmip (pMipClu->X(),pMipClu->Y(),pMipClu->Q()); //store mip info
- if(dMin>1) {pTrk->SetHMPIDsignal (kMipDistCut); continue;} //closest cluster with enough charge is still too far
- pTrk->SetHMPIDcluIdx (iCh,iMip); //set mip cluster index
- recon.SetTrack(th,ph,xRa,yRa); Int_t iNphot=0; //initialize track parameters
- pTrk->SetHMPIDsignal (recon.CkovAngle(pCluLst,iNphot)); //search for Cerenkov angle for this track
- pTrk->SetHMPIDchi2 (recon.CkovSigma2()); //error squared
- pTrk->SetHMPIDmip (pMipClu->X(),pMipClu->Y(),pMipClu->Q(),iMip); //info on mip cluster + n. phot.
- }//ESD tracks loop
- AliDebugClass(1,"Stop pattern recognition");
- return 0; // error code: 0=no error;
+ return Recon(pEsd,fClu,(TObjArray*)pNmeanEnt->GetObject());
}//PropagateBack()
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliHMPIDTracker::Recon(AliESDEvent *pEsd,TObjArray *pClus,TObjArray *pNmean)
+{
+// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
+// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
+// Returns: error code, 0 if no errors
+ AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor
+ Float_t xPc,yPc;
+ for(Int_t iTrk=0;iTrk<pEsd->GetNumberOfTracks();iTrk++){ //ESD tracks loop
+ AliESDtrack *pTrk = pEsd->GetTrack(iTrk); //get reconstructed track
+ Int_t cham=IntTrkCha(pTrk,xPc,yPc); //get chamber intersected by this track
+ if(cham<0) continue; //no intersection at all, go after next track
+ Double_t nmean=((TF1*)pNmean->At(3*cham))->Eval(pEsd->GetTimeStamp()); //C6F14 Nmean for this chamber
+ recon.SetImpPC(xPc,yPc); //store track impact to PC
+ recon.CkovAngle(pTrk,(TClonesArray *)pClus->At(cham),nmean); //search for Cerenkov angle of this track
+ } //ESD tracks loop
+ return 0; // error code: 0=no error;
+}//Recon()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+Int_t AliHMPIDTracker::ReconHiddenTrk(Int_t iCh,AliESDtrack *pTrk,TClonesArray *pCluLst,TObjArray *pNmean)
+{
+// Static method to reconstruct Theta Ckov for all valid tracks of a given event.
+// Arguments: pEsd- pointer ESD; pClu- pointer to clusters for all chambers; pNmean - pointer to all function Nmean=f(time)
+// Returns: error code, 0 if no errors
+ AliHMPIDRecon recon; //instance of reconstruction class, nothing important in ctor
+ Double_t nmean=((TF1*)pNmean->At(3*iCh))->Eval(0); //C6F14 Nmean for this chamber
+ if(pCluLst->GetEntriesFast()<4) return 1; //min 4 clusters (3 + 1 mip) to find a ring!
+ if(recon.CkovHiddenTrk(pTrk,pCluLst,nmean)) return 0; //search for track parameters and Cerenkov angle of this track
+ else return 1; // error code: 0=no error,1=fit not performed;
+}//Recon()
+//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff