Anomalous hollow electron beams in a storage ring.


Journal Article

This Letter reports the first observations of an anomalous hollow electron beam in the Duke storage ring. Created by exciting the single-bunch beam in a lattice with a negative chromaticity, the hollow beam consists of a solid core inside and a large ring outside. We report the detailed measurements of the hollow beam phenomenon, including its distinct image pattern, spectrum signature, and its evolution with time. By capturing the postinstability bursting beam, the hollow beam is a unique model system for studying the transverse instabilities, in particular, the interplay of the wakefield and the lattice nonlinearity. In addition, the hollow beam can be used as a powerful tool to study the linear and nonlinear particle dynamics in the storage ring.

Full Text

Duke Authors

Cited Authors

  • Wu, YK; Li, J; Wu, J

Published Date

  • April 7, 2005

Published In

Volume / Issue

  • 94 / 13

Start / End Page

  • 134802 -

PubMed ID

  • 15903998

Pubmed Central ID

  • 15903998

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.94.134802


  • eng