Speaker
Description
Encouraged by recent success of CBETA, a proposal was formulated to increase the CEBAF energy from the present 12 GeV to 22-24 GeV by replacing the highest-energy arcs (Arc 7-10) with Fixed Field Alternating Gradient (FFA) arcs, where beams with energies spanning a factor of two or more, can be simultaneously transport through the same array of combined function magnets. The new pair of FFA racetrack configured with permanent magnets would provide eight (4 + 4) new beam passes, allowing the energy to be nearly doubled using the existing CEBAF SRF cavity system. One of the immediate accelerator design tasks is to develop a proof-of-principle FFA arc lattice adiabatically matched to the linacs. We also examine a possibility of accommodating positrons into the new accelerator complex.
