1 /**************************************************************************
2 * This file is property of and copyright by the Experimental Nuclear *
3 * Physics Group, Dep. of Physics *
4 * University of Oslo, Norway, 2007 *
6 * Author: Per Thomas Hille <perthi@fys.uio.no> for the ALICE HLT Project.*
7 * Contributors are mentioned in the code where appropriate. *
8 * Please report bugs to perthi@fys.uio.no *
10 * Permission to use, copy, modify and distribute this software and its *
11 * documentation strictly for non-commercial purposes is hereby granted *
12 * without fee, provided that the above copyright notice appears in all *
13 * copies and that both the copyright notice and this permission notice *
14 * appear in the supporting documentation. The authors make no claims *
15 * about the suitability of this software for any purpose. It is *
16 * provided "as is" without express or implied warranty. *
17 **************************************************************************/
20 // Extraction of Amplitude and peak
21 // position using specila algorithm
22 // from Alexei Pavlinov
26 #include "AliCaloRawAnalyzerFastFit.h"
27 #include "AliCaloFastAltroFitv0.h"
28 #include "AliCaloFitResults.h"
29 #include "AliCaloBunchInfo.h"
35 ClassImp( AliCaloRawAnalyzerFastFit )
37 AliCaloRawAnalyzerFastFit::AliCaloRawAnalyzerFastFit() : AliCaloRawAnalyzer("Fast Fit (Alexei)", "FF")
41 for(int i=0; i < 1008; i++)
48 AliCaloRawAnalyzerFastFit::~AliCaloRawAnalyzerFastFit()
55 AliCaloRawAnalyzerFastFit::Evaluate( const vector<AliCaloBunchInfo> &bunchvector,
56 const UInt_t altrocfg1, const UInt_t altrocfg2 )
60 short maxampindex; //index of maximum amplitude
61 short maxamp; //Maximum amplitude
62 int index = SelectBunch( bunchvector, &maxampindex, &maxamp );
66 Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed );
67 Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed );
68 short timebinOffset = maxampindex - (bunchvector.at(index).GetLength()-1);
70 if( maxf < fAmpCut || ( maxamp - ped) > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then)
72 return AliCaloFitResults( maxamp, ped, AliCaloFitResults::kCrude, maxf, timebinOffset);
74 else if ( maxf >= fAmpCut ) // no if statement needed really; keep for readability
78 int maxrev = maxampindex - bunchvector.at(index).GetStartBin();
80 SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev , &first, &last);
81 int nsamples = last - first + 1;
83 if( ( nsamples ) >= fNsampleCut )
85 Double_t ordered[1008];
87 for(int i=0; i < nsamples ; i++ )
89 ordered[i] = fReversed[first + i];
92 Double_t eSignal = 1; // nominal 1 ADC error
98 Double_t dTau = 2.35; // time-bin units
100 AliCaloFastAltroFitv0::FastFit(fXAxis, ordered , nsamples,
101 eSignal, dTau, dAmp, eAmp, dTime0, eTime, chi2);
103 Double_t dTimeMax = dTime0 + timebinOffset - (maxrev - first) // abs. t0
104 + dTau; // +tau, makes sum tmax
105 return AliCaloFitResults(maxamp, ped, AliCaloFitResults::kFitPar, dAmp, dTimeMax, timebinOffset, chi2, AliCaloFitResults::kDummy,
106 AliCaloFitResults::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
110 Float_t chi2 = CalculateChi2(maxf, maxrev, first, last);
111 Int_t ndf = last - first - 1; // nsamples - 2
112 return AliCaloFitResults( maxamp, ped, AliCaloFitResults::kCrude, maxf, timebinOffset,
113 timebinOffset, chi2, ndf, AliCaloFitResults::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
118 return AliCaloFitResults(AliCaloFitResults::kInvalid , AliCaloFitResults::kInvalid);