2 /**************************************************************************
3 * This file is property of and copyright by the Experimental Nuclear *
4 * Physics Group, Dep. of Physics *
5 * University of Oslo, Norway, 2007 *
7 * Author: Per Thomas Hille <perthi@fys.uio.no> for the ALICE HLT Project.*
8 * Contributors are mentioned in the code where appropriate. *
9 * Please report bugs to perthi@fys.uio.no *
11 * Permission to use, copy, modify and distribute this software and its *
12 * documentation strictly for non-commercial purposes is hereby granted *
13 * without fee, provided that the above copyright notice appears in all *
14 * copies and that both the copyright notice and this permission notice *
15 * appear in the supporting documentation. The authors make no claims *
16 * about the suitability of this software for any purpose. It is *
17 * provided "as is" without express or implied warranty. *
18 **************************************************************************/
21 // Extraction of Amplitude and peak
22 // position using specila algorithm
23 // from Alexei Pavlinov
27 #include "AliCaloRawAnalyzerFastFit.h"
28 #include "AliCaloFastAltroFitv0.h"
29 #include "AliCaloFitResults.h"
30 #include "AliCaloBunchInfo.h"
37 #include "AliCaloConstants.h"
38 //using namespace CaloConstants::FitAlgorithm;
39 //using namespace CaloConstants::ReturnCodes;
41 ClassImp( AliCaloRawAnalyzerFastFit )
43 AliCaloRawAnalyzerFastFit::AliCaloRawAnalyzerFastFit() : AliCaloRawAnalyzer("Fast Fit (Alexei)", "FF")
46 fAlgo= Algo::kFastFit;
48 for(int i=0; i < 1008; i++)
55 AliCaloRawAnalyzerFastFit::~AliCaloRawAnalyzerFastFit()
62 AliCaloRawAnalyzerFastFit::Evaluate( const vector<AliCaloBunchInfo> &bunchvector,
63 const UInt_t altrocfg1, const UInt_t altrocfg2 )
67 short maxampindex; //index of maximum amplitude
68 short maxamp; //Maximum amplitude
69 int index = SelectBunch( bunchvector, &maxampindex, &maxamp );
73 Float_t ped = ReverseAndSubtractPed( &(bunchvector.at(index)) , altrocfg1, altrocfg2, fReversed );
74 Float_t maxf = TMath::MaxElement( bunchvector.at(index).GetLength(), fReversed );
75 short timebinOffset = maxampindex - (bunchvector.at(index).GetLength()-1);
77 if( maxf < fAmpCut || ( maxamp - ped) > fOverflowCut ) // (maxamp - ped) > fOverflowCut = Close to saturation (use low gain then)
79 return AliCaloFitResults( maxamp, ped, Algo::kCrude, maxf, timebinOffset);
81 else if ( maxf >= fAmpCut ) // no if statement needed really; keep for readability
85 int maxrev = maxampindex - bunchvector.at(index).GetStartBin();
87 SelectSubarray( fReversed, bunchvector.at(index).GetLength(), maxrev , &first, &last);
88 int nsamples = last - first + 1;
90 if( ( nsamples ) >= fNsampleCut )
92 Double_t ordered[1008];
94 for(int i=0; i < nsamples ; i++ )
96 ordered[i] = fReversed[first + i];
99 Double_t eSignal = 1; // nominal 1 ADC error
100 Double_t dAmp = maxf;
105 Double_t dTau = 2.35; // time-bin units
107 AliCaloFastAltroFitv0::FastFit(fXAxis, ordered , nsamples,
108 eSignal, dTau, dAmp, eAmp, dTime0, eTime, chi2);
110 Double_t dTimeMax = dTime0 + timebinOffset - (maxrev - first) // abs. t0
111 + dTau; // +tau, makes sum tmax
112 return AliCaloFitResults(maxamp, ped, Ret::kFitPar, dAmp, dTimeMax, timebinOffset, chi2, Ret::kDummy,
113 Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
117 Float_t chi2 = CalculateChi2(maxf, maxrev, first, last);
118 Int_t ndf = last - first - 1; // nsamples - 2
119 return AliCaloFitResults( maxamp, ped, Ret::kCrude, maxf, timebinOffset,
120 timebinOffset, chi2, ndf, Ret::kDummy, AliCaloFitSubarray(index, maxrev, first, last) );
125 return AliCaloFitResults( Ret::kInvalid , Ret::kInvalid );
127 // return AliCaloFitResults( kInvalid , kInvalid,
128 // kInvalid, kInvalid, kInvalid );