Nov 6 – 11, 2022
Hyatt Regency Long Island
America/New_York timezone

Transverse Stability in an Alternating Gradient Planar Dielectric Wakefield Structure

Nov 8, 2022, 5:00 PM
2h 30m
Salons F, G, H and Foyer

Salons F, G, H and Foyer

Board: P27
Student Poster WG4 Poster: Beam-Driven Acceleration Poster Session and Reception

Speaker

Walter Lynn (UCLA)

Description

Dielectric Wakefield Acceleration (DWA) as a practical means of realizing next-generation accelerators is predicated on the ability to sustain the beam-structure interaction over experimentally meaningful length scales. This goal is complicated by the fact that the beams in question inherently couple to transverse modes in addition to the desired longitudinal modes which, if left unaccounted for, lead to a beam breakup instability. We attempt to, in part, address this issue by tackling the quadrupole mode excited in a planar-symmetry dielectric structure. We do so by periodically alternating the orientation of said structure in order to alternate the orientation of the excited quadrupole wake causing the tail of the beam to experience sequential focusing and defocusing fields, stabilizing the interaction. We examine this technique computationally and lay out a planned experiment at the Argonne Wakefield Accelerator to verify it experimentally.

Acknowledgments

This work was funded by the Department of Energy
Office of Science Graduate Student Research Program as
well as grants DE-SC0017648, DE-SC0017648 and DE-
SC0018656.

Primary authors

Walter Lynn (UCLA) Gerard Andonian (UCLA / RadiaBeam) Nathan Majernik Sean O'Tool (UCLA) James Rosenzweig Seongyeol Kim (Argonne National Laboratory) John Power Eric Wisniewski (Argonne National Laboratory) Philippe Piot Charles Whiteford (Argonne National Laboratory) Scott Doran (Argonne National Laboratory)

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