Title: The CEBAF 22GeV Energy Upgrade

Abstract:
It is currently planned to increase the energy of the CEBAF recirculating linear accelerator from 12 to 22GeV by adding a pair of new recirculating arcs that contain multiple new energy passes.  This is achieved using a fixed field accelerator (FFA) lattice with low dispersion, so the different energies are close together.  The lattice is planned to be built using permanent magnets with fields of up to 1.5 Tesla.  Prototypes of these magnets have been built and measured successfully at BNL.