2 * @file ForwardAODConfig.C
3 * @author Christian Holm Christensen <cholm@dalsgaard.hehi.nbi.dk>
4 * @date Wed Mar 23 13:56:02 2011
8 * @ingroup pwg2_forward_scripts_tasks
12 * Configuration script for forward multiplicity task.
14 * You can copy this to your working directory or to some other
15 * directory up-front in your ROOT macro path, and edit it to suit your
18 * @ingroup pwg2_forward_aod
21 ForwardAODConfig(AliForwardMultiplicityBase* task)
25 Info("ForwardAODConfig", "Setting up task %s (%p)", task->GetName(), task);
27 // --- General parameters ------------------------------------------
28 // Whether to enable low flux specific code
29 task->SetEnableLowFlux(kFALSE);
31 // Would like to use dynamic cast but CINT interprets that as a
32 // static cast - sigh!
34 if (task->IsA() == AliForwardMCMultiplicityTask::Class()) {
35 Info("ForwardAODConfig", "Assuming Monte-Carlo input");
41 AliForwardMCMultiplicityTask* mcTask =
42 static_cast<AliForwardMCMultiplicityTask*>(task);
43 mcTask->SetOnlyPrimary(true);
46 Double_t nXi = 1; // mc ? 1 : .5;
47 Bool_t includeSigma = true;
49 // --- Event inspector ---------------------------------------------
50 // Set the number of SPD tracklets for which we consider the event a
52 task->GetEventInspector().SetLowFluxCut(1000);
53 // Set the maximum error on v_z [cm]
54 task->GetEventInspector().SetMaxVzErr(0.2);
56 // --- Sharing filter ----------------------------------------------
57 // Set the low cut used for sharing - overrides settings in eloss fits
58 task->GetSharingFilter().SetLowCut(mc ? 0.15 : 0.2);
59 // Set the number of xi's (width of landau peak) to stop at
60 task->GetSharingFilter().SetNXi(nXi);
61 // Set whether or not to include sigma in cut
62 task->GetSharingFilter().SetIncludeSigma(includeSigma);
63 // Enable use of angle corrected signals in the algorithm
64 task->GetSharingFilter().SetUseAngleCorrectedSignals(true);
66 // --- Density calculator
67 // Set the maximum number of particle to try to reconstruct
68 task->GetDensityCalculator().SetMaxParticles(10);
69 // Wet whether to use poisson statistics to estimate N_ch
70 task->GetDensityCalculator().SetUsePoisson(false);
71 // Set the lower multiplicity cut. Overrides setting in energy loss fits.
72 task->GetDensityCalculator().SetMultCut(.3); //was 0.3
73 // Set the lower per-ring multiplicity cuts
74 task->GetDensityCalculator().SetMultCuts(-1,-1,-1,-1,-1);
75 // USe this many times xi+sigma below MPV
76 task->GetDensityCalculator().SetNXi(nXi);
77 // Set whether or not to include sigma in cut
78 task->GetDensityCalculator().SetIncludeSigma(includeSigma);
79 // Set whether or not to use the phi acceptance
80 task->GetDensityCalculator().SetUsePhiAcceptance(true);
82 // --- Corrector ---------------------------------------------------
83 // Whether to use the secondary map correction
84 task->GetCorrections().SetUseSecondaryMap(true);
85 // Whether to use the vertex bias correction
86 task->GetCorrections().SetUseVertexBias(false);
87 // Whether to use the vertex bias correction
88 task->GetCorrections().SetUseAcceptance(true);
89 // Whether to use the merging efficiency correction
90 task->GetCorrections().SetUseMergingEfficiency(false);
92 // --- Histogram Collector -----------------------------------------
93 // Set the number of extra bins (beyond the secondary map border)
94 task->GetHistCollector().SetNCutBins(2);
95 // Set the correction cut, that is, when bins in the secondary map
96 // is smaller than this, they are considered empty
97 task->GetHistCollector().SetCorrectionCut(0.5);
98 // How to calculate the value of overlapping bins.
99 // Possible values are
101 // kStraightMeanNoZero
104 task->GetHistCollector().SetMergeMethod(AliFMDHistCollector::kStraightMean);
105 // How to find the fiducial area of the secondary maps
106 // Possible values are
107 // kByCut Only bins larger that cut are trusted
108 // kDistance Only bins that are more than half the size of it neighbors
109 task->GetHistCollector().SetFiducialMethod(AliFMDHistCollector::kByCut);
111 // --- Debug -------------------------------------------------------
112 // Set the overall debug level (1: some output, 3: a lot of output)
114 // Set the debug level of a single algorithm
115 task->GetSharingFilter().SetDebug(0);
117 // --- Set limits on fits the energy -------------------------------
118 // Maximum relative error on parameters
119 AliFMDCorrELossFit::ELossFit::fgMaxRelError = .12;
120 // Least weight to use
121 AliFMDCorrELossFit::ELossFit::fgLeastWeight = 1e-5;
122 // Maximum value of reduced chi^2
123 AliFMDCorrELossFit::ELossFit::fgMaxChi2nu = 20;