In 2003 SL and PS Divisions were amalgamated to become Accelerators and Beams (AB) Division directed by S Myers. In 2004 AB Division was renamed AB Department. It hosts the groups responsible for beam generation, acceleration, transfer, control and delivery for the CERN accelerator complex. The competences in the department include accelerator physics, particle sources, RF acceleration systems, power converters, beam instrumentation, controls, beam extraction and injection, targets, collimators and dumps, as well as operation of the whole CERN accelerator complex. The Department is responsible for the specification, procurement and commissioning of the equipment for the above systems for the LHC machine, as well as for the power converters for the LHC detectors. Approved research and development for the new accelerator projects also reside in the Accelerators and Beams Department.