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ITS: Add protection from bogus vtx coordinate #10600

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Merged
shahor02 merged 3 commits into from
Jan 23, 2023
Merged

ITS: Add protection from bogus vtx coordinate #10600

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5dc4bcc
Add protection from bogus vtx coordinate
mconcas Jan 19, 2023
949b909
Update default Z cut at 4*sigmaZ
mconcas Jan 20, 2023
e0f5f89
Update Configuration.h
mconcas Jan 20, 2023
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1 change: 1 addition & 0 deletions 1 Detectors/ITSMFT/ITS/tracking/include/ITStracking/Configuration.h
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Expand Up @@ -106,6 +106,7 @@ struct VertexingParameters {
float tanLambdaCut = 0.002f; // tanLambda = deltaZ/deltaR
float lowMultXYcut2 = 0.01f; // XY cut for low-multiplicity pile up
float baseBeamError = 0.005f;
float maxZPositionAllowed = 25.f;
int clusterContributorsCut = 16;
int maxTrackletsPerCluster = 2e3;
int phiSpan = -1;
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1 change: 1 addition & 0 deletions 1 Detectors/ITSMFT/ITS/tracking/include/ITStracking/TrackingConfigParam.h
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Expand Up @@ -33,6 +33,7 @@ struct VertexerParamConfig : public o2::conf::ConfigurableParamHelper<VertexerPa
float tanLambdaCut = 0.002f; // tanLambda = deltaZ/deltaR
float lowMultXYcut2 = 0.25f; // XY cut for low-multiplicity pile up
float baseBeamError = 0.005f;
float maxZPositionAllowed = 25.f; // 4x sZ of the beam
int clusterContributorsCut = 16;
int maxTrackletsPerCluster = 1e2;
int phiSpan = -1;
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1 change: 1 addition & 0 deletions 1 Detectors/ITSMFT/ITS/tracking/src/Vertexer.cxx
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Expand Up @@ -66,6 +66,7 @@ void Vertexer::getGlobalConfiguration()
verPar.histPairCut = vc.histPairCut;
verPar.tanLambdaCut = vc.tanLambdaCut;
verPar.lowMultXYcut2 = vc.lowMultXYcut2;
verPar.maxZPositionAllowed = vc.maxZPositionAllowed;
verPar.clusterContributorsCut = vc.clusterContributorsCut;
verPar.maxTrackletsPerCluster = vc.maxTrackletsPerCluster;
verPar.phiSpan = vc.phiSpan;
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2 changes: 1 addition & 1 deletion 2 Detectors/ITSMFT/ITS/tracking/src/VertexerTraits.cxx
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Expand Up @@ -435,7 +435,7 @@ void VertexerTraits::computeVertices()
}
}
float rXY{std::hypot(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[0], mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[1])};
if (rXY < 1.98) {
if (rXY < 1.98 && std::abs(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[2]) < mVrtParams.maxZPositionAllowed) {
atLeastOneFound = true;
mVertices.emplace_back(mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[0],
mTimeFrame->getTrackletClusters(rofId)[iCluster].getVertex()[1],
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