College of Sciences
Beamline optics design for recirculatory linear accelerators requires special attention to suppress beam instabilities arising due to collective effects. The impact of these collective effects becomes more pronounced with the addition of energy recovery (ER) capability. Jefferson Lab’s multi-pass, multi-GeV ER proposal for the CEBAF accelerator, ER@CEBAF, is a 10- pass ER demonstration with low beam current. Tighter control of the beam parameters at lower energies is necessary to avoid beam break-up (BBU) instabilities, even with a small beam current. Optics optimizations require balancing both beta excursions at high-energy passes and overfocusing at low-energy passes. Here, we discuss an optics optimization process for recirculatory energy-recovery linacs (ERLs) using multi-objective evolutionary search methods.
Recirculatory linacs, ERLs
Artificial Intelligence and Robotics | Other Physics | Plasma and Beam Physics
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Neththikumara, Isurumali; Satogata, Todd; Bogacz, Alex; Bodenstein, Ryan; and Vandenhoeke, Arthur, "Lattice Optics Optimization for Recirculatory Energy Recovery Linacs with Multi-Objective Optimization" (2022). College of Sciences Posters. 2.