Practical solenoid-derived wiggler

Harel Golombek*, Eran Agmon, Eli Jerby

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Theoretical model and experimental results of a simple wiggler for free electron lasers with axial magnetic field are presented. The wiggler consists of a staggered array of iron rods placed inside the bore of a solenoid. The high-permeability rods deflect the nearby magnetic field, which thus acquires a periodic transverse component in addition to the longitudinal guiding field. The conversion ratio of the axial magnetic field to the transverse field depends on the geometry only, and is given by a simple analytical expression derived from a dipole-array model. The experimental results agree with the theoretical model. The solenoid derived wiggler with iron rods has the advantage of simplicity and accuracy. It is used in the traveling-wave free-electron maser (TWFEM) experiment at Tel-Aviv University.

Original languageEnglish
Pages (from-to)775-778
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume331
Issue number1-3
DOIs
StatePublished - 1 Jul 1993

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