DetectorFieldManagerTool Node1 DetectorFieldManagerTool # m_logVolumeList # m_physVolumeList # m_muonOnlyField # m_fieldMgrHolder + DetectorFieldManagerTool() + ~DetectorFieldManagerTool() + initializeField() Node2 G4FieldManagerToolBase # m_fieldSvc # m_fieldOn # m_integratorStepper # m_equationOfMotion + G4FieldManagerToolBase() + ~G4FieldManagerToolBase() + initialize() # getStepper() # setFieldParameters() * m_minEps * m_maxEps * m_deltaChord * m_deltaOneStep * m_deltaIntersection * m_maxStep * m_minStep Node2->Node1 Node3 extends< AthAlgTool, IFieldManagerTool > Node3->Node2