Lattice Optics Optimization for Recirculatory Energy Recovery Linacs with Multi-Objective Optimization

Presenter and Co-Authors

Isurumali Neththikumara, Old Dominion UniversityFollow
Todd Satogata, Thomas Jefferson National Accelerator FacilityFollow
Alex Bogacz, Thomas Jefferson National Accelerator FacilityFollow
Ryan Bodenstein, Thomas Jefferson National Accelerator FacilityFollow
Arthur Vandenhoeke, Artificial Intelligence Lab, BrusselsFollow

ORCID

0000-0002-9781-2368

College

College of Sciences

Department

Physics

Graduate Level

Doctoral

Publication Date

4-2022

DOI

10.25883/vw8d-za23

Abstract

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.

Keywords

Recirculatory linacs, ERLs

Disciplines

Artificial Intelligence and Robotics | Other Physics | Plasma and Beam Physics

Comments

This material is based upon work supported by the U.S. Department of Energy under contract DE-AC05-06OR23177.

Files

Recommended Citation

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.
https://digitalcommons.odu.edu/gradposters2022_sciences/2