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A hybrid type undulator for far-infrared FELs at FELI

Conference ·
; ;  [1]
  1. Free Electron Laser Research Institute, Inc., Osaka (Japan); and others
Two FEL facilities of the FELI are now operating in the wavelength range of 1-20 {mu}m. A 3.2-m hybrid type undulator ({lambda}{sub u}=80mm, N=40) has been designed for far-infrared FELs and will be installed in December. It can cover the wavelength of 20-60 {mu}m by changing K-value from 1 to 2.7 for a 28.0-MeV electron beam. It is composed of ferrite magnetic poles and Sm-Co permanent magnets. Commonly wound coils induce alternating magnetic field in ferrite poles. Combination of the induced field and the permanent magnet field can controls the magnetic field between the undulator gap.
Research Organization:
Brookhaven National Lab., Upton, NY (United States)
OSTI ID:
238649
Report Number(s):
BNL--61982-Absts.; CONF-9508156--Absts.; ON: DE96002729
Country of Publication:
United States
Language:
English

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