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 pwglf_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 * @param task Task to configure
20 * @ingroup pwglf_forward_aod
23 ForwardAODConfig(AliForwardMultiplicityBase* task)
27 Info("ForwardAODConfig", "Setting up task %s (%p)", task->GetName(), task);
29 // --- General parameters ------------------------------------------
30 // Whether to enable low flux specific code
31 task->SetEnableLowFlux(kFALSE);
33 // --- Cuts --------------------------------------------------------
34 // Would like to use dynamic cast but CINT interprets that as a
35 // static cast - sigh!
36 Bool_t mc = (task->IsA()==AliForwardMCMultiplicityTask::Class());
38 // Bool_t includeSigma = false; //true;
40 AliFMDMultCuts cSharingLow;
42 cSharingLow.SetMultCuts(0.3, 0.3, 0.3, 0.3, 0.3);
44 AliFMDMultCuts cSharingHigh;
45 cSharingHigh.SetMultCuts(-1);
46 cSharingHigh.SetNXi(0); // Was 2
47 cSharingHigh.SetIncludeSigma(false);
48 cSharingHigh.SetMPVFraction(0.6);
50 AliFMDMultCuts cDensity;
51 // cDensity.SetMultCuts(0.3, 0.3, 0.3, 0.3, 0.3);
52 cDensity.SetMultCuts(-1);
53 cDensity.SetMPVFraction(0.6); // Was .7
55 // --- Event inspector ---------------------------------------------
56 // Set the number of SPD tracklets for which we consider the event a
58 task->GetEventInspector().SetLowFluxCut(1000);
59 // Set the maximum error on v_z [cm]
60 task->GetEventInspector().SetMaxVzErr(0.2);
61 // Least number of constributors to 2nd pile-up vertex
62 task->GetEventInspector().SetMinPileupContributors(3);
63 // Least distance from primary to 2nd pile-up vertex (cm)
64 task->GetEventInspector().SetMinPileupDistance(.8);
65 // V0-AND triggered events flagged as NSD
66 task->GetEventInspector().SetUseV0AndForNSD(false);
67 // Use primary vertex selection from 1st physics WG
68 task->GetEventInspector().SetUseFirstPhysicsVtx(false);
69 // Use satellite collisions
70 task->GetEventInspector().SetUseDisplacedVertices(false);
71 // Which centrality estimator to use
72 task->GetEventInspector().SetCentralityMethod("V0M");
74 // --- Sharing filter ----------------------------------------------
75 // If the following is uncommented, then the merging of shared
76 // signals is disabled completely
77 // task->GetSharingFilter().SetDisableMerging(true);
78 // Enable use of angle corrected signals in the algorithm
79 task->GetSharingFilter().SetUseAngleCorrectedSignals(true);
80 // Disable use of angle corrected signals in the algorithm
81 task->GetSharingFilter().SetZeroSharedHitsBelowThreshold(false);
82 // Whether to use simple merging algorithm
83 task->GetSharingFilter().SetUseSimpleSharing(true);
84 // Whether to allow for 3 strip hits
85 task->GetSharingFilter().SetAllow3Strips(!mc);
86 // Do not cut fixed/hard on multiplicity
87 // task->GetSharingFilter().GetHCuts().SetMultCuts(-1);
88 // Set the number of xi's (width of landau peak) to stop at
89 // task->GetSharingFilter().GetHCuts().SetNXi(nXi);
90 // Set whether or not to include sigma in cut
91 // task->GetSharingFilter().GetHCuts().SetIncludeSigma(includeSigma);
92 // Set upper sharing cut
93 task->GetSharingFilter().SetHCuts(cSharingHigh);
94 // Enable use of angle corrected signals in the algorithm
95 task->GetSharingFilter().SetLCuts(cSharingLow);
96 // If true, consider AliESDFMD::kInvalidMult as a zero signal. This
97 // has the unfortunate side effect, that we cannot use the
98 // on-the-fly calculation of the phi acceptance.
102 // Before revision 43711 of AliFMDReconstructor, all strips with no
103 // signal where set to kInvalidMult. From revision 43711 (Release
104 // 4-19-Rev-09) empty strips that are not marked as bad have a
105 // signal of 0 (zero). That means, that for any reconstruction done
106 // with releases prior to 4-19-Rev-09 this flag _must_ be defined as
109 // The unfortunate side effect mentioned above is especially cruel
110 // in this case, since we would benefit a lot from this setting for
111 // that data. However, one can add dead strips here using
112 // AliFMDSharingFilter::AddDeadStrip or
113 // AliFMDSharingFilter::AddDeadRegion to remedy the situation, since
114 // strips added explicitly here are always ignored. In the future,
115 // the acceptance maker script should generate the list
118 // LHC10c-900Gev is effected up-to and including pass3
119 // LHC10c-7TeV is effected up-to and including pass2
120 // LHC10c-CPass0 should be OK, but has limited statistics
121 // LHC10c_11a_FMD should be OK, but has few runs
122 task->GetSharingFilter().SetInvalidIsEmpty(false);
123 // Dead region in FMD2i
124 task->GetSharingFilter().AddDeadRegion(2, 'I', 16, 17, 256, 511);
125 // One can add extra dead strips from a script like
127 // void deadstrips(AliFMDSharingFilter* filter)
129 // filter->AddDead(...);
135 // task->GetSharingFilter().AddDead("deadstrips.C");
137 // --- Density calculator ------------------------------------------
138 // Set the maximum number of particle to try to reconstruct
139 task->GetDensityCalculator().SetMaxParticles(10);
140 // Wet whether to use poisson statistics to estimate N_ch
141 task->GetDensityCalculator().SetUsePoisson(true);
142 // Set whether or not to include sigma in cut
143 task->GetDensityCalculator().SetCuts(cDensity);
144 // Set lumping (nEta,nPhi)
145 task->GetDensityCalculator().SetLumping(32,4);
146 // Recalculate phi taking (x,y) offset of IP into account
147 task->GetDensityCalculator().SetRecalculatePhi(true);
148 // Least acceptable quality of ELoss fits
149 task->GetDensityCalculator().SetMinQuality(8);
150 // Set the maximum ratio of outlier bins to the total number of bins
151 task->GetDensityCalculator().SetMaxOutliers(.10);
152 // Set the maximum relative diviation between N_ch from Eloss and Poisson
153 task->GetDensityCalculator().SetOutlierCut(0.5);
154 // Set whether or not to use the phi acceptance
155 // AliFMDDensityCalculator::kPhiNoCorrect
156 // AliFMDDensityCalculator::kPhiCorrectNch
157 // AliFMDDensityCalculator::kPhiCorrectELoss
158 task->GetDensityCalculator()
159 .SetUsePhiAcceptance(AliFMDDensityCalculator::kPhiCorrectNch);
161 // --- Corrector ---------------------------------------------------
162 // Whether to use the secondary map correction
163 task->GetCorrections().SetUseSecondaryMap(true);
164 // Whether to use the vertex bias correction (deprecated)
165 task->GetCorrections().SetUseVertexBias(false);
166 // Whether to use the acceptance correction from dead-strips (deprecated)
167 task->GetCorrections().SetUseAcceptance(false);
168 // Whether to use the merging efficiency correction (deprecated)
169 task->GetCorrections().SetUseMergingEfficiency(false);
171 // --- Histogram Collector -----------------------------------------
172 // Set the number of extra bins (beyond the secondary map border)
173 task->GetHistCollector().SetNCutBins(2);
174 // Set the correction cut, that is, when bins in the secondary map
175 // is smaller than this, they are considered empty
176 task->GetHistCollector().SetCorrectionCut(0.5);
177 // How to calculate the value of overlapping bins.
178 // Possible values are
180 // kStraightMeanNoZero
186 task->GetHistCollector().SetMergeMethod(AliFMDHistCollector::kStraightMean);
187 // How to find the fiducial area of the secondary maps
188 // Possible values are
189 // kByCut Only bins larger that cut are trusted
190 // kDistance Only bins that are more than half the size of it neighbors
191 task->GetHistCollector().SetFiducialMethod(AliFMDHistCollector::kByCut);
192 // Additional diagnostics output - off by default
194 // If this option is enabled, then the summed per-vertex, per-ring
195 // d2N/detadphi histograms will be stored in the output, as well as
196 // copies of the secondary maps
197 // task->GetHistCollector().SetMakeBGHitMaps(true);
199 // If this option is enabled, then a 3D histogram will be made for
200 // each ring, summing dN/deta for each centrality bin.
201 // task->GetHistCollector().SetMakeCentralitySums(true);
203 // --- Eventplane Finder -------------------------------------------
204 task->GetEventPlaneFinder().SetUsePhiWeights(false);
206 // --- Ring AOD output ---------------------------------------------
207 // If set to true, then 5 additional branches will be created on the
208 // output AOD - one for each FMD ring. The branches each contain a
209 // TH2D object of the (primary) charged particle multiplicity per
210 // (eta,phi)-bin in that event
211 // task->SetStorePerRing(true);
213 // --- Set limits on fits the energy -------------------------------
214 // DO NOT CHANGE THESE UNLESS YOU KNOW WHAT YOU ARE DOING
215 // Maximum relative error on parameters
216 // AliFMDCorrELossFit::ELossFit::fgMaxRelError = .12;
217 // Least weight to use
218 // AliFMDCorrELossFit::ELossFit::fgLeastWeight = 1e-5;
219 // Maximum value of reduced chi^2
220 // AliFMDCorrELossFit::ELossFit::fgMaxChi2nu = 10;
222 // --- Debug -------------------------------------------------------
223 // Set the overall debug level (1: some output, 3: a lot of output)
224 // task->SetDebug(0);
225 // Set the debug level of a single algorithm
226 // task->GetSharingFilter().SetDebug(3);