/* $Id$ */
-/////////////////////////////////////////////////////////////////////////
+//_________________________________________________________________________
//
-// AliITSMultReconstructor - find clusters in the pixels (theta and
-// phi) and tracklets.
-//
-// These can be used to extract charged particles multiplcicity from the ITS.
+// Implementation of the ITS-SPD trackleter class
//
-// A tracklet consist of two ITS clusters, one in the first pixel
-// layer and one in the second. The clusters are associates if the
-// differencies in Phi (azimuth) and Zeta (longitudinal) are inside
-// a fiducial volume. In case of multiple candidates it is selected the
-// candidate with minimum distance in Phi.
-// The boolean fOnlyOneTrackletPerC2 allows to control if two clusters
-// in layer 2 can be associated to the same cluster in layer 1 or not.
+// It retrieves clusters in the pixels (theta and phi) and finds tracklets.
+// These can be used to extract charged particle multiplicity from the ITS.
//
-/////////////////////////////////////////////////////////////////////////
+// A tracklet consists of two ITS clusters, one in the first pixel layer and
+// one in the second. The clusters are associated if the differences in
+// Phi (azimuth) and Theta (polar angle) are within fiducial windows.
+// In case of multiple candidates the candidate with minimum
+// distance is selected.
+//_________________________________________________________________________
#include "TObject.h"
void Reconstruct(TTree* tree, Float_t* vtx, Float_t* vtxRes);
void LoadClusterFiredChips(TTree* tree);
+ void FlagClustersInOverlapRegions(Int_t ic1,Int_t ic2);
+ // Following members are set via AliITSRecoParam
void SetPhiWindow(Float_t w=0.08) {fPhiWindow=w;}
- void SetZetaWindow(Float_t w=1.) {fZetaWindow=w;}
- void SetOnlyOneTrackletPerC2(Bool_t b = kTRUE) {fOnlyOneTrackletPerC2 = b;}
-
+ void SetThetaWindow(Float_t w=0.025) {fThetaWindow=w;}
+ void SetPhiShift(Float_t w=0.0045) {fPhiShift=w;}
+ void SetRemoveClustersFromOverlaps(Bool_t b = kFALSE) {fRemoveClustersFromOverlaps = b;}
+ void SetPhiOverlapCut(Float_t w=0.005) {fPhiOverlapCut=w;}
+ void SetZetaOverlapCut(Float_t w=0.05) {fZetaOverlapCut=w;}
+
Int_t GetNClustersLayer1() const {return fNClustersLay1;}
Int_t GetNClustersLayer2() const {return fNClustersLay2;}
Int_t GetNTracklets() const {return fNTracklets;}
AliITSMultReconstructor& operator=(const AliITSMultReconstructor& mr);
- Float_t** fClustersLay1; // clusters in the 1st layer of ITS
- Float_t** fClustersLay2; // clusters in the 2nd layer of ITS
+ Float_t** fClustersLay1; // clusters in the 1st layer of ITS
+ Float_t** fClustersLay2; // clusters in the 2nd layer of ITS
+ Int_t* fDetectorIndexClustersLay1; // module index for clusters 1st ITS layer
+ Int_t* fDetectorIndexClustersLay2; // module index for clusters 2nd ITS layer
+ 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** fTracklets; // tracklets
Float_t** fSClusters; // single clusters (unassociated)
- Bool_t* fAssociationFlag; // flag for the associations
Int_t fNClustersLay1; // Number of clusters (Layer1)
Int_t fNClustersLay2; // Number of clusters (Layer2)
Int_t fNSingleCluster; // Number of unassociated clusters
Short_t fNFiredChips[2]; // Number of fired chips in the two SPD layers
- Float_t fPhiWindow; // Search window in phi
- Float_t fZetaWindow; // SEarch window in eta
+ // Following members are set via AliITSRecoParam
+ Float_t fPhiWindow; // Search window in phi
+ Float_t fThetaWindow; // Search window in theta
+ Float_t fPhiShift; // Phi shift reference value (at 0.5 T)
+ Bool_t fRemoveClustersFromOverlaps; // Option to skip clusters in the overlaps
+ Float_t fPhiOverlapCut; // Fiducial window in phi for overlap cut
+ Float_t fZetaOverlapCut; // Fiducial window in eta for overlap cut
- Bool_t fOnlyOneTrackletPerC2; // only one tracklet per cluster in L. 2
-
Bool_t fHistOn; // Option to define and fill the histograms
-
TH1F* fhClustersDPhiAcc; // Phi2 - Phi1 for tracklets
TH1F* fhClustersDThetaAcc; // Theta2 - Theta1 for tracklets
- TH1F* fhClustersDZetaAcc; // z2 - z1projected for tracklets
TH1F* fhClustersDPhiAll; // Phi2 - Phi1 all the combinations
TH1F* fhClustersDThetaAll; // Theta2 - Theta1 all the combinations
- TH1F* fhClustersDZetaAll; // z2 - z1projected all the combinations
TH2F* fhDPhiVsDThetaAll; // 2D plot for all the combinations
TH2F* fhDPhiVsDThetaAcc; // same plot for tracklets
- TH2F* fhDPhiVsDZetaAll; // 2d plot for all the combination
- TH2F* fhDPhiVsDZetaAcc; // same plot for tracklets
TH1F* fhetaTracklets; // Pseudorapidity distr. for tracklets
TH1F* fhphiTracklets; // Azimuthal (Phi) distr. for tracklets
void LoadClusterArrays(TTree* tree);
- ClassDef(AliITSMultReconstructor,3)
+ ClassDef(AliITSMultReconstructor,6)
};
#endif
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff