Extending to beam test analysis
[u/mrichter/AliRoot.git] / PHOS / AliPHOSClusterizerv1.h
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e9a88722 1#ifndef ALIPHOSCLUSTERIZERV1_H
d15a28e7 2#define ALIPHOSCLUSTERIZERV1_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6ad0bfa0 6/* $Id$ */
7
b2a60966 8//_________________________________________________________________________
9// Implementation version 1 of the clusterization algorithm
baef0810 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
b2a60966 14//
15//*-- Author: Yves Schutz (SUBATECH)
d15a28e7 16
17// --- ROOT system ---
18
19// --- Standard library ---
20
21// --- AliRoot header files ---
22
23#include "AliPHOSClusterizer.h"
9a1398dd 24class AliPHOSEmcRecPoint ;
25class AliPHOSDigit ;
26class AliPHOSDigitizer ;
27class AliPHOSGeometry ;
c2cd5471 28class AliPHOSCalibrationDB ;
d15a28e7 29
30class AliPHOSClusterizerv1 : public AliPHOSClusterizer {
31
32public:
33
9688c1dd 34 AliPHOSClusterizerv1() ;
fbf811ec 35 AliPHOSClusterizerv1(const char * headerFile, const char * name = "Default", const Bool_t toSplit=kFALSE);
9688c1dd 36 virtual ~AliPHOSClusterizerv1() ;
d15a28e7 37
1f96ab2a 38 virtual Int_t AreNeighbours(AliPHOSDigit * d1, AliPHOSDigit * d2)const ;
9a1398dd 39 // Checks if digits are in neighbour cells
3758d9fc 40
41 virtual Float_t Calibrate(Int_t amp, Int_t absId)const ; // Tranforms Amp to energy
42
baef0810 43 virtual void GetNumberOfClustersFound(int * numb )const{ numb[0] = fNumberOfEmcClusters ;
44 numb[1] = fNumberOfCpvClusters ; }
9a1398dd 45
46 virtual Float_t GetEmcClusteringThreshold()const{ return fEmcClusteringThreshold;}
47 virtual Float_t GetEmcLocalMaxCut()const { return fEmcLocMaxCut;}
48 virtual Float_t GetEmcLogWeight()const { return fW0;}
9688c1dd 49 virtual Float_t GetEmcTimeGate() const { return fEmcTimeGate ; }
9a1398dd 50 virtual Float_t GetCpvClusteringThreshold()const{ return fCpvClusteringThreshold; }
51 virtual Float_t GetCpvLocalMaxCut()const { return fCpvLocMaxCut;}
52 virtual Float_t GetCpvLogWeight()const { return fW0CPV;}
fbf811ec 53 virtual const char * GetRecPointsBranch() const{ return GetName() ;}
54 virtual const Int_t GetRecPointsInRun() const {return fRecPointsInRun ;}
9a1398dd 55
56 void Exec(Option_t *option); // Does the job
57
58 virtual void Print(Option_t * option)const ;
59
d72dfbc3 60 virtual void SetEmcClusteringThreshold(Float_t cluth) { fEmcClusteringThreshold = cluth ; }
9a1398dd 61 virtual void SetEmcLocalMaxCut(Float_t cut) { fEmcLocMaxCut = cut ; }
62 virtual void SetEmcLogWeight(Float_t w) { fW0 = w ; }
fbf811ec 63 virtual void SetEmcTimeGate(Float_t gate) { fEmcTimeGate = gate ;}
ed4205d8 64 virtual void SetCpvClusteringThreshold(Float_t cluth) { fCpvClusteringThreshold = cluth ; }
9a1398dd 65 virtual void SetCpvLocalMaxCut(Float_t cut) { fCpvLocMaxCut = cut ; }
66 virtual void SetCpvLogWeight(Float_t w) { fW0CPV = w ; }
548f0134 67 virtual void SetUnfolding(Bool_t toUnfold = kTRUE ) { fToUnfold = toUnfold ;}
9a1398dd 68 static Double_t ShowerShape(Double_t r) ; // Shape of EM shower used in unfolding;
69 //class member function (not object member function)
7b7c1533 70 static void UnfoldingChiSquare(Int_t & nPar, Double_t * Grad, Double_t & fret, Double_t * x, Int_t iflag) ;
71 // Chi^2 of the fit. Should be static to be passes to MINUIT
72 virtual const char * Version() const { return "clu-v1" ; }
9a1398dd 73
1f96ab2a 74protected:
75
76 void WriteRecPoints(Int_t event) ;
77 virtual void MakeClusters( ) ;
78 virtual Bool_t IsInEmc (AliPHOSDigit * digit)const ; // Tells if id digit is in EMC
79 virtual Bool_t IsInCpv (AliPHOSDigit * digit)const ; // Tells if id digit is in CPV
80
7b7c1533 81
d15a28e7 82private:
7b7c1533 83
fbf811ec 84 const TString BranchName() const ;
3758d9fc 85 void GetCalibrationParameters(void) ;
86
a0636361 87 Bool_t FindFit(AliPHOSEmcRecPoint * emcRP, AliPHOSDigit ** MaxAt, Float_t * maxAtEnergy,
baef0810 88 Int_t NPar, Float_t * FitParametres) const; //Used in UnfoldClusters, calls TMinuit
fbf811ec 89 void Init() ;
90 void InitParameters() ;
9a1398dd 91
9a1398dd 92 virtual void MakeUnfolding() ;
9a1398dd 93 void UnfoldCluster(AliPHOSEmcRecPoint * iniEmc,Int_t Nmax,
a0636361 94 AliPHOSDigit ** maxAt,Float_t * maxAtEnergy ) ; //Unfolds cluster using TMinuit package
9a1398dd 95 void PrintRecPoints(Option_t * option) ;
96
97private:
98
92f521a9 99 Bool_t fDefaultInit; //! Says if the task was created by defaut ctor (only parameters are initialized)
9a1398dd 100
3758d9fc 101 Int_t fEmcCrystals ; // number of EMC cristalls in PHOS
102
9a1398dd 103 Bool_t fToUnfold ; // To perform unfolding
104
ed4205d8 105 Int_t fNumberOfEmcClusters ; // number of EMC clusters found
9688c1dd 106 Int_t fNumberOfCpvClusters ; // number of CPV clusters found
7b7c1533 107
c2cd5471 108 //Calibration parameters
109 AliPHOSCalibrationDB * fCalibrationDB ; //! Calibration database if aval
3758d9fc 110 Float_t fADCchanelEmc ; // width of one ADC channel in GeV
111 Float_t fADCpedestalEmc ; //
112 Float_t fADCchanelCpv ; // width of one ADC channel in CPV 'popugais'
113 Float_t fADCpedestalCpv ; //
9a1398dd 114
b2a60966 115 Float_t fEmcClusteringThreshold ; // minimum energy to include a EMC digit in a cluster
ed4205d8 116 Float_t fCpvClusteringThreshold ; // minimum energy to include a CPV digit in a cluster
9a1398dd 117 Float_t fEmcLocMaxCut ; // minimum energy difference to distinguish local maxima in a cluster
b2a60966 118 Float_t fW0 ; // logarithmic weight for the cluster center of gravity calculation
9a1398dd 119 Float_t fCpvLocMaxCut ; // minimum energy difference to distinguish local maxima in a CPV cluster
d72dfbc3 120 Float_t fW0CPV ; // logarithmic weight for the CPV cluster center of gravity calculation
2b60655b 121 Int_t fRecPointsInRun ; //! Total number of recpoints in one run
9688c1dd 122 Float_t fEmcTimeGate ; // Maximum time difference between the digits in ont EMC cluster
123
fc12304f 124 ClassDef(AliPHOSClusterizerv1,2) // Clusterizer implementation version 1
d15a28e7 125
126};
127
128#endif // AliPHOSCLUSTERIZERV1_H