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Development of a modified wiggler for higher harmonic lasing of a free-electron laser

Authors :
T. Asakuma
Makoto Asakawa
Masayuki Fujita
T. Minamiguchi
A. Moon
Kazuo Imasaki
J. Chen
Yoshiaki Tsunawaki
Nobuhisa Ohigashi
T. Agari
K. Mima
Chihiro Yamanaka
Naoki Inoue
N. Nakao
S. Nakai
Source :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 358:399-402
Publication Year :
1995
Publisher :
Elsevier BV, 1995.

Abstract

A modified wiggler, with enhanced harmonic fields, was developed for free-electron laser higher harmonic lasing. The harmonic wiggler field was produced by arranging high-permeability shims in the gap spacing of a four-block-per-period Halbach design wiggler. By this method, the 3rd harmonic wiggler field exceeded 18% of the fundamental field. The phasing of the harmonic field could be also controlled by the positioning of the shims.

Details

ISSN :
01689002
Volume :
358
Database :
OpenAIRE
Journal :
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Accession number :
edsair.doi...........b80bdd82c34c8c5386167875a973d710
Full Text :
https://doi.org/10.1016/0168-9002(94)01269-5