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Please consider the following formatting changes to #17346 #23

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Please consider the following formatting changes to #17346 #23

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a0c23ef
[PWGDQ] added configurable magnetic feield z bias
aferrero2707 Aug 5, 2026
e35d6db
Please consider the following formatting changes
alibuild Aug 5, 2026
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6 changes: 6 additions & 0 deletions PWGDQ/Tasks/global-muon-matcher.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -202,6 +202,9 @@ struct GlobalMuonMatching {
Configurable<float> cfgMFTAlignmentCorrYOffsetBottom{"cfgMFTAlignmentCorrYOffsetBottom", 0.f, "MFT Y offset correction - bottom half"};
} configMftAlignmentCorrections;

// Magnetic field position bias
Configurable<float> cfgFieldOriginBiasZ{"cfgFieldOriginBiasZ", 0.0f, "Bias applied to the magnetic field z position"};

// Variables for CCDB objects access and retrieval
struct : ConfigurableGroup {
Configurable<std::string> cfgCcdbUrl{"cfgCcdbUrl", "http://alice-ccdb.cern.ch", "url of the ccdb repository"};
Expand Down Expand Up @@ -755,6 +758,9 @@ struct GlobalMuonMatching {
fCCDBApi.init(configCcdb.cfgCcdbUrl);
mRunNumber = 0;

// configure magnetic field position bias
o2::conf::ConfigurableParam::setValue("FieldOriginBias.z", std::to_string(cfgFieldOriginBiasZ.value));

// Configuration for track fitter
const auto& trackerParam = mch::TrackerParam::Instance();
trackFitter.setBendingVertexDispersion(trackerParam.bendingVertexDispersion);
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11 changes: 7 additions & 4 deletions PWGDQ/Tasks/muonGlobalAlignment.cxx
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Expand Up @@ -148,6 +148,8 @@ struct muonGlobalAlignment {

Configurable<uint32_t> fMftTracksMultiplicityMax{"cfgMftTracksMultiplicityMax", 0, "Maximum number of MFT tracks to be processed per event (zero means no limit)"};

// Magnetic field position bias
Configurable<float> cfgFieldOriginBiasZ{"cfgFieldOriginBiasZ", 0.0f, "Bias applied to the magnetic field z position"};
Configurable<float> fVertexZshift{"cfgVertexZshift", 0.0f, "Correction to the vertex z position"};
Configurable<float> fDipoleZshift{"cfgDipoleZshift", 0.0f, "Correction to the dipole z position"};

Expand Down Expand Up @@ -418,10 +420,8 @@ struct muonGlobalAlignment {
ccdbApi.init(configCCDB.ccdburl);
mRunNumber = 0;

if (!o2::base::GeometryManager::isGeometryLoaded()) {
LOGF(info, "Load geometry from CCDB");
ccdbManager->get<TGeoManager>(configCCDB.geoPath);
}
// configure magnetic field position bias
o2::conf::ConfigurableParam::setValue("FieldOriginBias.z", std::to_string(cfgFieldOriginBiasZ.value));

// Configuration for track fitter
const auto& trackerParam = TrackerParam::Instance();
Expand All @@ -431,6 +431,9 @@ struct muonGlobalAlignment {
trackFitter.useChamberResolution();
mImproveCutChi2 = 2. * configRealign.fSigmaCutImprove * configRealign.fSigmaCutImprove;

// use the Runge-Kutta extrapolation v2
TrackExtrap::useExtrapV2();

// Fill table of MCH alignment corrections
rapidjson::Document document;
// Check that the json is parsed correctly
Expand Down
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