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"
27 class AliEMCALTowerRecPoint ;
29 class AliEMCALDigitizer ;
30 class AliEMCALGeometry ;
33 class AliEMCALClusterizerv1 : public AliEMCALClusterizer {
37 AliEMCALClusterizerv1() ;
38 AliEMCALClusterizerv1(const char * headerFile, const char * name = "Default", const Bool_t toSplit=kFALSE);
39 virtual ~AliEMCALClusterizerv1() ;
41 virtual Int_t AreNeighbours(AliEMCALDigit * d1, AliEMCALDigit * d2)const ;
42 // Checks if digits are in neighbour cells
44 virtual Float_t Calibrate(Int_t amp, Bool_t inpresho)const ; // Tranforms Amp to energy
46 virtual void GetNumberOfClustersFound(int * numb )const{ numb[0] = fNumberOfTowerClusters ;
47 numb[1] = fNumberOfPreShoClusters ; }
49 virtual Float_t GetTowerClusteringThreshold()const{ return fTowerClusteringThreshold;}
50 virtual Float_t GetTowerLocalMaxCut()const { return fTowerLocMaxCut;}
51 virtual Float_t GetTowerLogWeight()const { return fW0;}
52 virtual Float_t GetTimeGate() const { return fTimeGate ; }
53 virtual Float_t GetPreShoClusteringThreshold()const{ return fPreShoClusteringThreshold; }
54 virtual Float_t GetPreShoLocalMaxCut()const { return fPreShoLocMaxCut;}
55 virtual Float_t GetPreShoLogWeight()const { return fW0CPV;}
56 virtual const char * GetRecPointsBranch() const{ return GetName() ;}
57 virtual const Int_t GetRecPointsInRun() const {return fRecPointsInRun ;}
59 void Exec(Option_t *option); // Does the job
61 virtual void Print(Option_t * option)const ;
63 virtual void SetTowerClusteringThreshold(Float_t cluth) { fTowerClusteringThreshold = cluth ; }
64 virtual void SetTowerLocalMaxCut(Float_t cut) { fTowerLocMaxCut = cut ; }
65 virtual void SetTowerLogWeight(Float_t w) { fW0 = w ; }
66 virtual void SetTimeGate(Float_t gate) { fTimeGate = gate ;}
67 virtual void SetPreShoClusteringThreshold(Float_t cluth) { fPreShoClusteringThreshold = cluth ; }
68 virtual void SetPreShoLocalMaxCut(Float_t cut) { fPreShoLocMaxCut = cut ; }
69 virtual void SetPreShoLogWeight(Float_t w) { fW0CPV = w ; }
70 virtual void SetUnfolding(Bool_t toUnfold = kTRUE ) {fToUnfold = toUnfold ;}
71 static Double_t ShowerShape(Double_t r) ; // Shape of EM shower used in unfolding;
72 //class member function (not object member function)
73 static void UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag) ;
74 // Chi^2 of the fit. Should be static to be passes to MINUIT
75 virtual const char * Version() const { return "clu-v1" ; }
79 void WriteRecPoints(Int_t event) ;
80 virtual void MakeClusters( ) ;
81 virtual Bool_t IsInTower (AliEMCALDigit * digit)const ; // Tells if id digit is in Tower
82 virtual Bool_t IsInPreShower (AliEMCALDigit * digit)const ; // Tells if id digit is in PreShower
87 const TString BranchName() const ;
88 void GetCalibrationParameters(void) ;
90 Bool_t FindFit(AliEMCALTowerRecPoint * emcRP, AliEMCALDigit ** MaxAt, Float_t * maxAtEnergy,
91 Int_t NPar, Float_t * FitParametres) const; //Used in UnfoldClusters, calls TMinuit
93 void InitParameters() ;
95 virtual void MakeUnfolding() ;
96 void UnfoldCluster(AliEMCALTowerRecPoint * iniEmc,Int_t Nmax,
97 AliEMCALDigit ** maxAt,Float_t * maxAtEnergy ) ; //Unfolds cluster using TMinuit package
98 void PrintRecPoints(Option_t * option) ;
102 Bool_t fDefaultInit; //! Says if the task was created by defaut ctor (only parameters are initialized)
104 Int_t fNTowers ; // number of Towers in EMCAL
106 Bool_t fToUnfold ; // To perform unfolding
108 Int_t fNumberOfTowerClusters ; // number of Tower clusters found
109 Int_t fNumberOfPreShoClusters ; // number of PreShower clusters found
111 //Calibration parameters... to be replaced by database
112 Float_t fADCchannelTower ; // width of one ADC channel for Tower (GeV)
113 Float_t fADCpedestalTower ; // pedestal of ADC for Tower (GeV)
114 Float_t fADCchannelPreSho ; // width of one ADC channel for Pre Shower (GeV)
115 Float_t fADCpedestalPreSho ; // pedestal of ADC for PreShower (GeV)
117 Float_t fTowerClusteringThreshold ; // minimum energy to include a EMC digit in a cluster
118 Float_t fPreShoClusteringThreshold ; // minimum energy to include a CPV digit in a cluster
119 Float_t fTowerLocMaxCut ; // minimum energy difference to distinguish local maxima in a cluster
120 Float_t fW0 ; // logarithmic weight for the cluster center of gravity calculation
121 Float_t fPreShoLocMaxCut ; // minimum energy difference to distinguish local maxima in a CPV cluster
122 Float_t fW0CPV ; // logarithmic weight for the CPV cluster center of gravity calculation
123 Int_t fRecPointsInRun ; //! Total number of recpoints in one run
124 Float_t fTimeGate ; // Maximum time difference between the digits in ont EMC cluster
126 ClassDef(AliEMCALClusterizerv1,2) // Clusterizer implementation version 1
130 #endif // AliEMCALCLUSTERIZERV1_H