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[u/mrichter/AliRoot.git] / EMCAL / AliEMCALRawUtils.h
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1#ifndef ALIEMCALRAWUTILS_H
2#define ALIEMCALRAWUTILS_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5
6/* $Id$ */
7
8//_________________________________________________________________________
9// Utility Class for handling Raw data
10// Does all transitions from Digits to Raw and vice versa,
11// for simu and reconstruction
12//
13// Note: the current version is still simplified. Only
14// one raw signal per digit is generated; either high-gain or low-gain
15// Need to add concurrent high and low-gain info in the future
16// No pedestal is added to the raw signal.
17//
18//*-- Author: Marco van Leeuwen (LBL)
19//
20#include "TObject.h" // for ROOT types
21#include <TString.h>
22//#include "AliCaloRawStreamV3.h"
23class AliCaloRawStreamV3;
24class AliAltroMapping;
25class TGraph;
26class AliRawReader;
27class AliEMCALGeometry;
28class AliCaloCalibPedestal;
29class AliCaloRawAnalyzer;
30
31class AliEMCALRawUtils : public TObject {
32 public:
33 enum fitAlgorithm {kStandard = 0, kFastFit= 1, kNeuralNet = 2, kLogFit = 3, kLMS = 4, kPeakFinder = 5, kCrude = 6};
34
35 AliEMCALRawUtils(fitAlgorithm fitAlgo = kStandard);
36 AliEMCALRawUtils(AliEMCALGeometry *pGeometry, fitAlgorithm fitAlgo = kStandard);
37 virtual ~AliEMCALRawUtils();
38
39 AliEMCALRawUtils(const AliEMCALRawUtils& rawUtils); //copy ctor
40 AliEMCALRawUtils& operator =(const AliEMCALRawUtils& rawUtils);
41
42 void Digits2Raw();
43 void Raw2Digits(AliRawReader *reader, TClonesArray *digitsArr, const AliCaloCalibPedestal* pedbadmap,
44 TClonesArray *digitsTRG=0x0);
45
46 void AddDigit(TClonesArray *digitsArr, Int_t id, Int_t lowGain, Float_t amp, Float_t time);
47 void AddDigit(TClonesArray *digitsArr, Int_t id, Int_t timeSamples[], Int_t nSamples);
48
49 // Signal shape parameters
50 Double_t GetRawFormatHighLowGainFactor() const { return fHighLowGainFactor ;}
51 Int_t GetRawFormatOrder() const { return fOrder ; }
52 Double_t GetRawFormatTau() const { return fTau ; }
53 Int_t GetNoiseThreshold() const { return fNoiseThreshold; }
54 Int_t GetNPedSamples() const { return fNPedSamples; }
55 // get methods for fast fit simulation
56 Int_t GetPedestalValue() const {return fgPedestalValue;}
57 Double_t GetFEENoise() const {return fgFEENoise;}
58
59 Bool_t GetRemoveBadChannels() const {return fRemoveBadChannels;}
60 Int_t GetFittingAlgorithm() const {return fFittingAlgorithm; }
61 Bool_t UseFALTRO() const {return fUseFALTRO; }
62
63 void SetRawFormatHighLowGainFactor(Double_t val) {fHighLowGainFactor=val;}
64 void SetRawFormatOrder(Int_t val) {fOrder=val; }
65 void SetRawFormatTau(Double_t val) {fTau=val; }
66 void SetNoiseThreshold(Int_t val) {fNoiseThreshold=val; }
67 void SetNPedSamples(Int_t val) {fNPedSamples=val; }
68 void SetRemoveBadChannels(Bool_t val) {fRemoveBadChannels=val; }
69 void SetFittingAlgorithm(Int_t val) ;
70 void SetFALTROUsage(Bool_t val) {fUseFALTRO=val; }
71
72 // set methods for fast fit simulation
73 void SetFEENoise(Double_t val) {fgFEENoise = val;}
74 void SetRawFormatTimeBins(Int_t val) {fgTimeBins = val;}
75 void SetPedestalValue(Int_t val) {fgPedestalValue = val;}
76
77 static Int_t GetRawFormatTimeBins() { return fgTimeBins ; }
78 static Double_t GetRawFormatTimeMax() { return fgTimeBins*fgTimeBinWidth; }
79 static Double_t GetRawFormatTimeBinWidth() { return fgTimeBinWidth; }
80 static Double_t GetRawFormatTimeBin()
81 { return GetRawFormatTimeMax() / GetRawFormatTimeBins(); }
82 Double_t GetRawFormatTimeTrigger() const { return fgTimeTrigger ; }
83 Int_t GetRawFormatThreshold() const { return fgThreshold ; }
84 Int_t GetRawFormatDDLPerSuperModule() const { return fgDDLPerSuperModule ; }
85 AliCaloRawAnalyzer *GetRawAnalyzer() const { return fRawAnalyzer;}
86
87 virtual Option_t* GetOption() const { return fOption.Data(); }
88 void SetOption(const Option_t* opt) { fOption = opt; }
89
90 // Signal shape functions
91
92 void FitRaw(const Int_t firstTimeBin, const Int_t lastTimeBin, Float_t & amp, Float_t & time, Bool_t & fitDone) const ;
93 void FitParabola(const TGraph *gSig, Float_t & amp) const ;
94 static Double_t RawResponseFunction(Double_t *x, Double_t *par);
95 static Double_t RawResponseFunctionLog(Double_t *x, Double_t *par);
96 Bool_t RawSampledResponse(Double_t dtime, Double_t damp, Int_t * adcH, Int_t * adcL, const Int_t keyErr=0) const;
97
98 static void CalculateChi2(const Double_t* t,const Double_t* y,const Int_t nPoints,
99 const Double_t sig, const Double_t tau, const Double_t amp, const Double_t t0, Double_t &chi2);
100
101 private:
102 Double_t fHighLowGainFactor ; // high to low gain factor for the raw RO signal
103 Int_t fOrder ; // order of the gamma function for the RO signal
104 Double_t fTau ; // tau parameter of gamma function for the RO signal
105 Int_t fNoiseThreshold; // threshold to consider signal or noise
106 Int_t fNPedSamples; // number of samples to use in pedestal calculation
107
108 static const Int_t fgkOverflowCut = 950; // cut to discriminate overflowed channels
109 static const Int_t fgkRawSignalOverflow = 0x3FF; // maximum signal (10 bits)
110 static Int_t fgTimeBins; // number of sampling bins of the raw RO signal
111
112 static Double_t fgTimeTrigger ; // time of the trigger for the RO signal
113 static Double_t fgTimeBinWidth; // maximum sampled time of the raw RO signal
114 static Int_t fgThreshold; // threshold
115 static Int_t fgDDLPerSuperModule; // number of DDL per SuperModule
116 static Int_t fgPedestalValue; // pedestal value for Digits2Raw
117 static Double_t fgFEENoise; // electronics noise in ADC units
118
119 AliEMCALGeometry* fGeom; //geometry
120 AliAltroMapping* fMapping[4]; //only two for now
121
122 TString fOption; //! option passed from Reconstructor
123
124 Bool_t fRemoveBadChannels; // select if bad channels are removed before fitting
125 Int_t fFittingAlgorithm; // select the fitting algorithm
126 Bool_t fUseFALTRO; // use FALTRO and pass it to the digits
127
128 AliCaloRawAnalyzer *fRawAnalyzer; // e.g. for sample selection for fits
129
130 ClassDef(AliEMCALRawUtils,6) // utilities for raw signal fitting
131};
132
133#endif