Quenching: Problem with neg. inv. masses cured (z reduced for heavy quarks).
[u/mrichter/AliRoot.git] / MUON / AliMUONClusterFinderAZ.h
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0df3ca52 1#ifndef ALIMUONCLUSTERFINDERAZ_H
2#define ALIMUONCLUSTERFINDERAZ_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6#include <TROOT.h>
7class TH2F;
8class TH2D;
9class TClonesArray;
10class AliSegmentation;
11class AliMUONResponse;
12class TMinuit;
13class TMatrixD;
14class AliMUONPixel;
15#include "AliMUONClusterFinderVS.h"
16
17// Some constants
18 static const Int_t kDim = 2000; // array size
19 static const Double_t kCouplMin = 1.e-3; // threshold on coupling
20
21//class AliMUONClusterFinderAZ : public TObject {
22class AliMUONClusterFinderAZ : public AliMUONClusterFinderVS {
23
24 public:
25
26 AliMUONClusterFinderAZ(Bool_t draw, Int_t iReco);// Constructor
27 virtual ~AliMUONClusterFinderAZ(); // Destructor
28
29 void FindRawClusters(); // the same interface as for old cluster finder
30 void EventLoop(Int_t nev, Int_t ch); // first event
31 Bool_t TestTrack(Int_t t); // test if track was selected
c1aed84f 32
0df3ca52 33 static AliMUONClusterFinderAZ* fgClusterFinder;
c1aed84f 34
0df3ca52 35 Int_t fnPads[2]; // ! number of pads in the cluster on 2 cathodes
36 Float_t fXyq[6][kDim]; // ! pad information
37 Int_t fPadIJ[2][kDim]; // ! pad information
38 AliSegmentation *fSegmentation[2]; // ! segmentation
39 AliMUONResponse *fResponse; // ! response
40 Float_t fZpad; // ! z-coordinate of the hit
41 Int_t fNpar; // ! number of fit parameters
42 Double_t fQtot; // ! total cluster charge
43 Int_t fReco; // ! =1 if run reco with writing to TreeR
44
45 protected:
46
47 private:
48
49 static TMinuit* fgMinuit; // ! Fitter
50 Bool_t fUsed[2][kDim]; // ! flags for used pads
51 TH2F *fHist[4]; // ! histograms
52 TClonesArray *fMuonDigits; // ! pointer to digits
53 Bool_t fDraw; // ! draw flag
54 Int_t fnMu; // number of muons passing thru the selected area
55 Double_t fxyMu[2][7]; // ! muon information
56 TObjArray *fPixArray; // collection of pixels
57
58 // Functions
59
60 void ModifyHistos(void); // modify histograms
61 void AddPad(Int_t cath, Int_t digit); // add a pad to the cluster
62 Bool_t Overlap(Int_t cath, TObject *dig); // check if the pad from one cathode overlaps with a pad in the cluster on the other cathode
63 Bool_t Overlap(Float_t *xy1, Int_t iPad, Float_t *xy12, Int_t iSkip); // check if pads xy1 and iPad overlap and return overlap area
64 Bool_t CheckPrecluster(Int_t *nShown); // check precluster to simplify it (if possible)
65 void BuildPixArray(); // build array of pixels
66 void AjustPixel(Float_t width, Int_t ixy); // ajust size of small pixels
67 void AjustPixel(Float_t wxmin, Float_t wymin); // ajust size of large pixels
68 Bool_t MainLoop(); // repeat MLEM algorithm until pixels become sufficiently small
69 void Mlem(Double_t *coef, Double_t *probi); // use MLEM for cluster finding
70 void FindCOG(TH2D *mlem, Double_t *xyc); // find COG position around maximum bin
71 Int_t FindNearest(AliMUONPixel *pixPtr0); // find nearest neighbouring pixel to the given one
72 void Split(TH2D *mlem, Double_t *coef); // steering function for pixels
73 void AddBin(TH2D *mlem, Int_t ic, Int_t jc, Int_t mode, Bool_t* used, TObjArray *pix); // add a bin to the cluster
74 TObject* BinToPix(TH2D *mlem, Int_t jc, Int_t ic); // hist. bin-to-pixel
c1aed84f 75 void AddCluster(Int_t ic, Int_t nclust, TMatrixD *aijcluclu, Bool_t *used, Int_t *clustNumb, Int_t &nCoupled); // add a cluster to the group of coupled clusters
76 Double_t MinGroupCoupl(Int_t nCoupled, Int_t *clustNumb, TMatrixD *aijcluclu, Int_t *minGroup); // find group of cluster with min. coupling to others
77 Int_t SelectPad(Int_t nCoupled, Int_t nForFit, Int_t *clustNumb, Int_t *clustFit, TMatrixD *aijcluclu); //select pads for fit
78 void Merge(Int_t nForFit, Int_t nCoupled, Int_t *clustNumb, Int_t *clustFit, TObjArray **clusters, TMatrixD *aijcluclu, TMatrixD *aijclupad); // merge clusters
0df3ca52 79 Int_t Fit(Int_t nfit, Int_t *clustFit, TObjArray **clusters, Double_t *parOk); // do the fitting
80 void UpdatePads(Int_t nfit, Double_t *par); // subtract fitted charges from pads
81 void AddRawCluster(Double_t x, Double_t y, Double_t fmin); // add new raw cluster
82 Int_t FindLocalMaxima(Int_t *localMax, Double_t *maxVal); // find local maxima
83 void FlagLocalMax(TH2D *hist, Int_t i, Int_t j, Int_t *isLocalMax); // flag local max
84 void FindCluster(Int_t *localMax, Int_t iMax); // find cluster around local max
85
86 ClassDef(AliMUONClusterFinderAZ,0) // cluster finder in MUON arm of ALICE
87 };
88#endif