Title

Gain Analysis of the FEL Using a Geometrically Focusing Permanent-Magnet Undulator

Keywords

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

Abstract

The propagation properties of electron beams have been studied on undulators consisting of parabolic-shaped magnets and of alternately shifted magnets; this is the succession of work on undulators having circularly curved magnets or trapezoid/rhomboid shaped magnets. The gain of the FEL was also estimated for these geometrically focusing undulators by a one dimensional simulation code. It was found that for the circularly or parabolically curved undulator an electron beam propagating with a large divergence has a small gain, both positive and negative, due to the large amplitude deviation of the magnetic field of the undulator.

Publication Title

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

Volume

331

Issue/Number

1-3

Publication Date

1-1-1993

Document Type

Article; Proceedings Paper

Language

English

WOS Identifier

WOS:A1993LK37800144

ISSN

0168-9002

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