class AliTrackletAlg: public AliTrackleter
Implementation of the ITS-SPD trackleter class
Clone version of the AliITSMultReconstructor class (October 2010)
that can be used in an AliAnalysisTask
Support and development:
Domenico Elia, Maria Nicassio (INFN Bari)
Domenico.Elia@ba.infn.it, Maria.Nicassio@ba.infn.it
Function Members (Methods)
public:
protected:
| AliTrackletAlg(const AliTrackletAlg& mr) | |
| virtual void | TObject::DoError(int level, const char* location, const char* fmt, va_list va) const |
| void | LoadClusterArrays(TTree* tree) |
| void | TObject::MakeZombie() |
| AliTrackletAlg& | operator=(const AliTrackletAlg& mr) |
Data Members
public:
| enum { | kClTh | |
| kClPh | ||
| kClZ | ||
| kClMC0 | ||
| kClMC1 | ||
| kClMC2 | ||
| kClNPar | ||
| kTrTheta | ||
| kTrPhi | ||
| kTrDPhi | ||
| kTrDTheta | ||
| kTrLab1 | ||
| kTrLab2 | ||
| kClID1 | ||
| kClID2 | ||
| kTrNPar | ||
| kSCTh | ||
| kSCPh | ||
| kSCLab | ||
| kSCID | ||
| kSCNPar | ||
| kITSTPC | ||
| kITSSAP | ||
| kITSTPCBit | ||
| kITSSAPBit | ||
| }; | ||
| enum TObject::EStatusBits { | kCanDelete | |
| kMustCleanup | ||
| kObjInCanvas | ||
| kIsReferenced | ||
| kHasUUID | ||
| kCannotPick | ||
| kNoContextMenu | ||
| kInvalidObject | ||
| }; | ||
| enum TObject::[unnamed] { | kIsOnHeap | |
| kNotDeleted | ||
| kZombie | ||
| kBitMask | ||
| kSingleKey | ||
| kOverwrite | ||
| kWriteDelete | ||
| }; |
protected:
| Float_t* | fClustersLay1 | clusters in the 1st layer of ITS |
| Float_t* | fClustersLay2 | clusters in the 2nd layer of ITS |
| Float_t | fCutChi2cGamma | max constrained chi2 cut for gammas |
| Float_t | fCutChi2cK0 | max constrained chi2 cut for K0s |
| Float_t | fCutDCArz | max DR or DZ for primares |
| Float_t | fCutGammaSFromDecay | min path*P for gammas |
| Float_t | fCutK0SFromDecay | min path*P for K0s |
| Float_t | fCutMassGamma | max gamma mass |
| Float_t | fCutMassGammaNSigma | max standard deviations from 0 for gamma |
| Float_t | fCutMassK0 | max K0 mass difference from PGD value |
| Float_t | fCutMassK0NSigma | max standard deviations for K0 mass from PDG value |
| Float_t | fCutMaxDCA | max DCA for V0 at ESD vertex |
| Float_t | fCutMaxDCADauther | max DCA of daughters at V0 |
| Float_t | fCutMinElectronProbESD | min probability for e+/e- PID not involving TPC |
| Float_t | fCutMinElectronProbTPC | min probability for e+/e- PID involving TPC |
| Float_t | fCutMinP | min P of V0 |
| Float_t | fCutMinPointAngle | min pointing angle cosine |
| Float_t | fCutMinRGamma | min transv. distance from ESDVertex to V0 for gammas |
| Float_t | fCutMinRK0 | min transv. distance from ESDVertex to V0 for K0s |
| Float_t | fCutPxDrSPDin | max P*DR for primaries involving at least 1 SPD |
| Float_t | fCutPxDrSPDout | max P*DR for primaries not involving any SPD |
| Float_t | fCutPxDz | max P*DZ for primaries |
| AliITSDetTypeRec* | fDetTypeRec | ! pointer to DetTypeRec |
| Int_t* | fDetectorIndexClustersLay1 | module index for clusters 1st ITS layer |
| Int_t* | fDetectorIndexClustersLay2 | module index for clusters 2nd ITS layer |
| AliESDEvent* | fESDEvent | ! pointer to ESD event |
| Bool_t | fHistOn | Option to define and fill the histograms |
| AliMultiplicity* | AliTrackleter::fMult | multiplicity object |
| Int_t | fNClustersLay1 | Number of clusters (Layer1) |
| Int_t | fNClustersLay2 | Number of clusters (Layer2) |
| Short_t | fNFiredChips[2] | Number of fired chips in the two SPD layers |
| Int_t | fNSingleCluster | Number of unassociated clusters |
| Int_t | fNTracklets | Number of tracklets |
| Bool_t* | fOverlapFlagClustersLay1 | flag for clusters in the overlap regions 1st ITS layer |
| Bool_t* | fOverlapFlagClustersLay2 | flag for clusters in the overlap regions 2nd ITS layer |
| Float_t | fPhiOverlapCut | Fiducial window in phi for overlap cut |
| Float_t | fPhiRotationAngle | Angle to rotate the inner layer cluster for combinatorial reco only |
| Float_t | fPhiShift | Phi shift reference value (at 0.5 T) |
| Float_t | fPhiWindow | Search window in phi |
| Bool_t | fRemoveClustersFromOverlaps | Option to skip clusters in the overlaps |
| Float_t** | fSClusters | single clusters (unassociated) |
| Float_t | fThetaWindow | Search window in theta |
| Float_t** | fTracklets | tracklets |
| TTree* | fTreeRP | ! ITS recpoints |
| UInt_t* | fUsedClusLay1 | RS: flag of clusters usage in ESD tracks: 0=unused, else ID+1 in word0=TPC/ITS+ITSSA, word1=ITSSA_Pure |
| UInt_t* | fUsedClusLay2 | RS: flag of clusters usage in ESD tracks: 0=unused, else ID+1 word0=TPC/ITS+ITSSA, word1=ITSSA_Pure |
| Float_t | fZetaOverlapCut | Fiducial window in eta for overlap cut |
| TH1F* | fhClustersDPhiAcc | Phi2 - Phi1 for tracklets |
| TH1F* | fhClustersDPhiAll | Phi2 - Phi1 all the combinations |
| TH1F* | fhClustersDThetaAcc | Theta2 - Theta1 for tracklets |
| TH1F* | fhClustersDThetaAll | Theta2 - Theta1 all the combinations |
| TH2F* | fhDPhiVsDThetaAcc | same plot for tracklets |
| TH2F* | fhDPhiVsDThetaAll | 2D plot for all the combinations |
| TH1F* | fhetaClustersLay1 | Pseudorapidity distr. for Clusters L. 1 |
| TH1F* | fhetaTracklets | Pseudorapidity distr. for tracklets |
| TH1F* | fhphiClustersLay1 | Azimuthal (Phi) distr. for Clusters L. 1 |
| TH1F* | fhphiTracklets | Azimuthal (Phi) distr. for tracklets |
Class Charts
| Inheritance Chart: | ||||||||||||
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Function documentation
AliTrackletAlg(const AliTrackletAlg& mr)
Copy constructor :!!! RS ATTENTION: old c-tor reassigned the pointers instead of creating a new copy -> would crash on delete
void Reconstruct(AliESDEvent* esd, TTree* treeRP)
void Reconstruct(TTree* tree, Float_t* vtx, Float_t* vtxRes)
RS NOTE - this is old reconstructor invocation, to be used from VertexFinder
void FindTracklets(const Float_t* vtx)
- calls LoadClusterArrays that finds the position of the clusters (in global coord)
void LoadClusterArrays(TTree* tree)
This method - gets the clusters from the cluster tree - convert them into global coordinates - store them in the internal arrays - count the number of cluster-fired chips RS: This method was strongly modified wrt original. In order to have the same numbering of clusters as in the ITS reco I had to introduce sorting in Z Also note that now the clusters data are stored not in float[6] attached to float**, but in 1-D array
LoadClusterFiredChips(TTree* tree)
This method - gets the clusters from the cluster tree - counts the number of (cluster)fired chips
FlagClustersInOverlapRegions(Int_t ic1, Int_t ic2)
void ProcessESDTracks()
Flag the clusters used by ESD tracks Flag primary tracks to be used for multiplicity counting
void FlagTrackClusters(Int_t id)
RS: flag the SPD clusters of the track if it is useful for the multiplicity estimation
void FlagIfSecondary(AliESDtrack* track, const AliVertex* vtx)
RS: check if the track is primary and set the flag