Suppression of Deflecting Forces in Planar-Symmetric Dielectric Wakefield Accelerating Structures with Elliptical Bunches

Author ORCID Identifier

Stanislav Baturin:https://orcid.org/0000-0002-6911-3797

Publication Title

Physical Review Letters

ISSN

00319007

E-ISSN

10797114

Document Type

Article

Abstract

Wakefield based accelerators capable of accelerating gradients 2 orders of magnitude higher than present accelerators offer a path to compact high energy physics instruments and light sources. However, for high gradient accelerators, beam instabilities driven by commensurately high transverse wakefields limit beam quality. Previously, it has been theoretically shown that transverse wakefields can be reduced by elliptically shaping the transverse sizes of beams in dielectric structures with planar symmetry. Here, we report experimental measurements that demonstrate reduced transverse wakefields for elliptical beams in planar symmetric structures which are consistent with theoretical models. These results may enable the design of gigavolt-per-meter gradient wakefield based accelerators that produce and stably accelerate high quality beams.

Publication Date

3-13-2020

DOI

10.1103/PhysRevLett.124.104801

PubMed ID

32216389

Department

Department of Physics

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