MuonPatternRecognitionConfig.py

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# Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 
from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
from AthenaConfiguration.ComponentFactory import CompFactory
 
 
def MuonPhiHoughTransformAlgCfg(flags, name = "MuonPhiHoughTransformAlg", **kwargs):
    result = ComponentAccumulator()
    kwargs.setdefault("downWeightPrdMultiplicity", True)
    theAlg = CompFactory.MuonR4.PhiHoughTransformAlg(name, **kwargs)
    result.addEventAlgo(theAlg, primary=True)
    return result
 
 
def MuonNSWSegmentFinderAlgCfg(flags, name = "MuonNswSegmentFinderAlg", **kwargs):
    result = ComponentAccumulator()
    from MuonSpacePointCalibrator.CalibrationConfig import MuonSpacePointCalibratorCfg
    kwargs.setdefault("Calibrator", result.popToolsAndMerge(MuonSpacePointCalibratorCfg(flags)))
    theAlg = CompFactory.MuonR4.NswSegmentFinderAlg(name, **kwargs)
    result.addEventAlgo(theAlg, primary=True)
    return result
    
 
def MuonEtaHoughTransformAlgCfg(flags, name = "MuonEtaHoughTransformAlg", **kwargs):
    result = ComponentAccumulator()
    kwargs.setdefault("downWeightPrdMultiplicity", True)
    theAlg = CompFactory.MuonR4.EtaHoughTransformAlg(name, **kwargs)
    result.addEventAlgo(theAlg, primary=True)
    return result
 
def MuonSegmentFittingAlgCfg(flags, name = "MuonSegmentFittingAlg", **kwargs):
    result = ComponentAccumulator()
    from MuonSpacePointCalibrator.CalibrationConfig import MuonSpacePointCalibratorCfg
    kwargs.setdefault("Calibrator", result.popToolsAndMerge(MuonSpacePointCalibratorCfg(flags)))
    kwargs.setdefault("ResoSeedHitAssoc", 5. )
    kwargs.setdefault("RecoveryPull", 3.)
    # Configure T0 fitting, disabled by default
    kwargs.setdefault("fitSegmentT0", False)
    if kwargs.get("fitSegmentT0"):
        kwargs.setdefault("useHessianResidual", True)
        kwargs.setdefault("recalibInFit", True)
        kwargs.setdefault("maxIterations", 400)
        # temporarily disable beamspot constraint when fitting T0, as it causes FPEs
        kwargs.setdefault("doBeamspotConstraint", False)
    # Configure pre-fitting, disabled by default
    kwargs.setdefault("useFastPreFitter", False)
    if kwargs.get("useFastPreFitter"):
        kwargs.setdefault("useFastFitter", True)
    # Configure main (full) fitting
    kwargs.setdefault("useFastFitter", False)
    kwargs.setdefault("recalibInFit", False)
    kwargs.setdefault("doBeamspotConstraint", True)
    theAlg = CompFactory.MuonR4.SegmentFittingAlg(name, **kwargs)
    result.addEventAlgo(theAlg, primary=True)
    return result
 
def ActsMuonSegmentRefitAlgCfg(flags,name="ActsMuonSegmentRefitAlg", **kwargs):
    result = ComponentAccumulator()
    from MuonTrackFindingAlgs.TrackFindingConfig import SegmentSelectorCfg, MSTrackFitterCfg
    kwargs.setdefault("SegmentSelectionTool", result.popToolsAndMerge(SegmentSelectorCfg(flags)))
    from MuonSpacePointCalibrator.CalibrationConfig import MuonSpacePointCalibratorCfg
    kwargs.setdefault("Calibrator", result.popToolsAndMerge(MuonSpacePointCalibratorCfg(flags)))
    kwargs.setdefault("FittingTool", result.popToolsAndMerge(MSTrackFitterCfg(flags,
                                                                              DoStraightLine=True)))       
    from ActsConfig.ActsGeometryConfig import ActsExtrapolationToolCfg
    kwargs.setdefault("ExtrapolationTool", result.popToolsAndMerge(ActsExtrapolationToolCfg(flags, MaxSteps=10000)))
    from ActsConfig.ActsGeometryConfig import ActsTrackingGeometryToolCfg
    kwargs.setdefault("TrackingGeometryTool", result.getPrimaryAndMerge(ActsTrackingGeometryToolCfg(flags)))
    kwargs.setdefault("SegmentContainer", "MuonSegmentsFromR4")
    theAlg = CompFactory.MuonR4.SegmentActsRefitAlg(name, **kwargs)
    result.addEventAlgo(theAlg, primary = True)
    return result
 

def MuonPatternRecognitionCfg(flags, suffix = ""): 
    result = ComponentAccumulator()
    from ActsAlignmentAlgs.AlignmentAlgsConfig import ActsGeometryContextAlgCfg
    result.merge(ActsGeometryContextAlgCfg(flags))
    
    if flags.Muon.enableMLBucketFilter:
        from MuonInference.InferenceConfig import GraphBucketFilterToolCfg, GraphInferenceAlgCfg
        bucketTool = result.popToolsAndMerge(GraphBucketFilterToolCfg(flags))
        result.merge(GraphInferenceAlgCfg(flags,
                                          name = f"GraphInferenceAlg{suffix}",
                                          InferenceTools=[bucketTool]))
    
    segmentContainers = []
    if flags.Detector.GeometrysTGC or flags.Detector.GeometryMM:
        segmentContainers+=["MuonNswSegments"]
        result.merge(MuonEtaHoughTransformAlgCfg(flags, name=f"MuonNswEtaHoughTransformAlg{suffix}", 
                                                        EtaHoughMaxContainer = "MuonHoughNswMaxima", 
                                                        SpacePointContainer = "NswSpacePoints"))
        result.merge(MuonNSWSegmentFinderAlgCfg(flags, name=f"MuonNswSegmentFinderAlg{suffix}", 
                                                       MuonNswSegmentWriteKey = segmentContainers[-1], 
                                                       MuonNswSegmentSeedWriteKey = "MuonNswSegmentSeeds",
                                                       CombinatorialReadKey = "MuonHoughNswMaxima"))
       
    if flags.Detector.GeometryMDT or flags.Detector.GeometryRPC or flags.Detector.GeometryTGC:
        if flags.Muon.enableMLBucketFilter:
            result.merge(MuonEtaHoughTransformAlgCfg(flags, name = f"MuonEtaHoughTransformAlg{suffix}",
                                                     SpacePointContainer = "FilteredMlBuckets"))
        else:
            result.merge(MuonEtaHoughTransformAlgCfg(flags, name = f"MuonEtaHoughTransformAlg{suffix}"))
        result.merge(MuonPhiHoughTransformAlgCfg(flags, name = f"MuonPhiHoughTransformAlg{suffix}"))
        segmentContainers+=["R4MuonSegments"]
    
        result.merge(MuonSegmentFittingAlgCfg(flags, 
                                              name = f"MuonSegmentFittingAlg{suffix}",
                                              OutSegmentContainer=segmentContainers[-1]))
        
    from MuonSegmentCnv.MuonSegmentCnvConfig import xAODSegmentCnvAlgCfg
    result.merge(xAODSegmentCnvAlgCfg(flags, name = f"MuonR4xAODSegmentCnvAlg{suffix}", InSegmentKeys = segmentContainers))
    if flags.Input.isMC:
        from MuonTruthAlgsR4.MuonTruthAlgsConfig import RecoSegmentTruthAssocCfg
        result.merge(RecoSegmentTruthAssocCfg(flags,
                                              name=f"MuonSegmentsFromR4TruthMatching{suffix}",
                                              SegmentKey="MuonSegmentsFromR4"))
    if flags.Muon.scheduleActsReco:
        from MuonSegmentCnv.MuonSegmentCnvConfig import MuonR4SegmentCnvAlgCfg
        result.merge(MuonR4SegmentCnvAlgCfg(flags,
                                            name=f"MuonR4SegmentCnvAlg{suffix}",
                                            ReadSegments = segmentContainers,
                                            WriteKey="TrackMuonSegments"))
    return result