Undulators in the form of Permanently Magnetized Helices

Eyal Magory, Nezah Balal, Vladimir L. Bratman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A ferromagnetic heix magnetized axially or radially is apparently the simplest helical undulator. Four helices with alternating magnetization can provide a stronger helical field than the conventional planar Halbach arrays. Such undulators and micro undulators seem promising for various powerful HF sources. The method of direct integration of the fields of elementary magnets is used for analytical calculation of the fields of infinitely thin, longitudinally and radially uniformly magnetized helices of arbitrary length. Subsequent integration allows finding the field of a helix with finite transverse dimensions. The analytical magnitude of the field for an infinite helix is close to the numerically calculated one for a helix with a relatively small number of periods 5-10.

Original languageEnglish
Title of host publication2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021
PublisherIEEE Computer Society
ISBN (Electronic)9781728194240
DOIs
StatePublished - 2021
Event46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021 - Chengdu, China
Duration: 30 Aug 20213 Sep 2021

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2021-August
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference46th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2021
Country/TerritoryChina
CityChengdu
Period30/08/213/09/21

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