Model studies on the ELFA wiggler

Author

Acerbi, E. ; Baccaglioni, G. ; Corsini, R. ; De Salvo Souza, L. ; Rivoltella, G. ; Rossi, L.

Author_Institution

LASA-INFN, Milano, Italy

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

605

Lastpage

608

Abstract

A wiggler for the ELFA high-gain single-pass Compton FEL (free-electron laser) is under study. The preliminary design of the wiggler (λ_w=12 cm, B_w=3.6 kG, total length L=6-7 m) has shown the need for model studies in order to optimize the pole and the coil geometry. The main characteristics of an electromagnet model and the high-precision apparatus for magnetic measurements are described. The results of the model field measurement are presented and discussed. The data are also compared with theoretical predictions, based on 2-D codes and simple analytical models. The first set of measurements made on the model has shown good agreement with the main design goals. Peak field level, field waveform in the midplane, and transverse field pattern seem to be satisfactory

Keywords

electromagnets; free electron lasers; permanent magnets; wigglers; 2-D codes; ELFA wiggler; coil geometry; electromagnet model; field waveform; high-gain single-pass Compton FEL; high-precision apparatus; hybrid system; magnetic measurements; midplane; peak field level; permanent magnet blocks; transverse field pattern; Coils; Design optimization; Electromagnetic measurements; Electromagnets; Free electron lasers; Geometry; Laser modes; Magnetic field measurement; Solid modeling; Undulators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.119949

Filename

119949