1 #ifndef ALIEMCALCLUSTERIZERV1_H
2 #define ALIEMCALCLUSTERIZERV1_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //_________________________________________________________________________
9 // Implementation version 1 of the clusterization algorithm
10 // Performs clusterization (collects neighbouring active cells) and
11 // unfolding of the clusters with several local maxima.
12 // results are stored in TreeR#, branches PHOSEmcRP (EMC recPoints),
13 // PHOSCpvRP (CPV RecPoints) and AliPHOSClusterizer
15 //*-- Author: Yves Schutz (SUBATECH)
17 // August 2002 Yves Schutz: clone PHOS as closely as possible and intoduction
18 // of new IO (à la PHOS)
20 // --- ROOT system ---
22 // --- Standard library ---
24 // --- AliRoot header files ---
26 #include "AliEMCALClusterizer.h"
28 class AliEMCALRecPoint ;
30 class AliEMCALDigitizer ;
31 class AliEMCALGeometry ;
32 class AliEMCALCalibData ;
34 class AliEMCALClusterizerv1 : public AliEMCALClusterizer {
38 AliEMCALClusterizerv1() ;
39 AliEMCALClusterizerv1(AliEMCALGeometry* geometry);
40 AliEMCALClusterizerv1(AliEMCALGeometry* geometry, AliEMCALCalibData * calib);
42 virtual ~AliEMCALClusterizerv1() ;
44 virtual Int_t AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2)const ;
45 // Checks if digits are in neighbour cells
47 virtual Float_t Calibrate(Int_t amp, Int_t cellId) ; // Tranforms Amp to energy
49 virtual void GetNumberOfClustersFound(int numb )const{ numb = fNumberOfECAClusters ;}
50 virtual Float_t GetECAClusteringThreshold()const{ return fECAClusteringThreshold;}
51 virtual Float_t GetECALocalMaxCut()const { return fECALocMaxCut;}
52 virtual Float_t GetECALogWeight()const { return fECAW0;}
53 virtual Float_t GetMinECut()const { return fMinECut;}
55 virtual Float_t GetTimeCut() const { return fTimeCut ; }
57 virtual void Digits2Clusters(Option_t *option); // Does the job
59 virtual void Print(Option_t * option)const ;
61 virtual void SetECAClusteringThreshold(Float_t cluth) { fECAClusteringThreshold = cluth ; }
62 virtual void SetMinECut(Float_t mine) { fMinECut = mine; }
63 virtual void SetECALocalMaxCut(Float_t cut) { fECALocMaxCut = cut ; }
64 virtual void SetECALogWeight(Float_t w) { fECAW0 = w ; }
65 virtual void SetTimeCut(Float_t gate) { fTimeCut = gate ;}
66 virtual void SetUnfolding(Bool_t toUnfold = kTRUE ) {fToUnfold = toUnfold ;}
67 static Double_t ShowerShape(Double_t x, Double_t y) ; // Shape of EM shower used in unfolding;
68 //class member function (not object member function)
69 static void UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag) ;
70 // Chi^2 of the fit. Should be static to be passes to MINUIT
71 virtual const char * Version() const { return "clu-v1" ; }
73 void PrintRecoInfo(); //*MENU*
74 void SetCalibrationParameters(AliEMCALCalibData * calib) { fCalibData = calib ; }
78 virtual void MakeClusters();
81 AliEMCALClusterizerv1(const AliEMCALClusterizerv1 &); //copy ctor
82 AliEMCALClusterizerv1 & operator = (const AliEMCALClusterizerv1 &);
84 void GetCalibrationParameters(void) ;
86 Bool_t FindFit(AliEMCALRecPoint * emcRP, AliEMCALDigit ** MaxAt, Float_t * maxAtEnergy,
87 Int_t NPar, Float_t * FitParametres) const; //Used in UnfoldClusters, calls TMinuit
89 void InitParameters();
91 virtual void MakeUnfolding();
92 void UnfoldCluster(AliEMCALRecPoint * iniEmc, Int_t Nmax,
93 AliEMCALDigit ** maxAt,
94 Float_t * maxAtEnergy ); //Unfolds cluster using TMinuit package
95 void PrintRecPoints(Option_t * option) ;
98 AliEMCALGeometry* fGeom; //! pointer to geometry for utilities
100 Bool_t fDefaultInit; //! Says if the task was created by defaut ctor (only parameters are initialized)
101 Bool_t fToUnfold ; // To perform unfolding
102 Int_t fNumberOfECAClusters ; // number of clusters found in EC section
104 //Calibration parameters... to be replaced by database
106 AliEMCALCalibData * fCalibData ; //! Calibration database if aval
107 Float_t fADCchannelECA ; // width of one ADC channel for EC section (GeV)
108 Float_t fADCpedestalECA ; // pedestal of ADC for EC section (GeV)
110 Float_t fECAClusteringThreshold ; // minimum energy to seed a EC digit in a cluster
111 Float_t fECALocMaxCut ; // minimum energy difference to distinguish local maxima in a cluster
112 Float_t fECAW0 ; // logarithmic weight for the cluster center of gravity calculation
113 Float_t fTimeCut ; // Maximum time difference between the digits in ont EMC cluster
114 Float_t fMinECut; // Minimum energy for a digit to be a member of a cluster
116 ClassDef(AliEMCALClusterizerv1,7) // Clusterizer implementation version 1
120 #endif // AliEMCALCLUSTERIZERV1_H