Dr.rer.nat. Ralph J. Steinhagen, BE-BI-QP Physicist in the Beam Instrumentation Group Main responsibilities: LHC beam-based feedback system, related instrumentation and diagnostics tools High-Frequency RF and optical systems measuring fast-intra-bunch beam position and longitudinal profile Fostering the joint CERN-Australian (ACAS) collaboration related to novel beam instrumentation Development of new and improvement of existing orbit & Q/Q’ instrumentation and diagnostics systems Follow-up of diagnostics- and beam-physics related issues, in particular commissioning of the LHC Supervision of Summer-, Technical- and Ph.D students