Title

Focusing Permanent-Magnet Undulator

Keywords

Instruments & Instrumentation; Nuclear Science & Technology; Physics, ; Particles & Fields; Spectroscopy

Abstract

A plane polarized undulator does not have the ability to focus an electron beam in the undulating plane (X-Z plane) because the magnetic field decreases away from the X-axis. To focus in the bending plane, a quadrupole field must be added to the undulating field. This can be achieved using curved magnets or trapezoid-shaped magnets. In this article, we analyze a few magnet configurations which produce X-Z focusing. It has been found that semicircular magnets or trapezoid magnets having 1.2-degrees angle are suitable as focusing permanent magnet undulator.

Publication Title

Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment

Volume

304

Issue/Number

1--3

Publication Date

1-1-1991

Document Type

Article; Proceedings Paper

Language

English

First Page

753

Last Page

758

WOS Identifier

WOS:A1991FV59500162

ISSN

0168-9002

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