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Principles of gyrotron powered electromagnetic wigglers for free-electron lasers

Journal Article · · IEEE J. Quant. Electron.; (United States)
; ; ; ; ;

The operation of free-electron lasers (FEL's) with axial electron beams and high-power electromagnetic wiggler fields such as those produced by high-power gyrotrons is discussed. The use of short wavelength electromagnetic wigglers in waveguides and resonant cavities can significantly reduce required electron beam voltages, resulting in compact FEL's. Gain calculations in the low- and high-gain Compton regime are presented, including the effects of emittance, transverse wiggler gradient, and electron temperature. Optimized scaling laws for the FEL gain and the required electromagnetic wiggler field power are discussed. Several possible configurations for FEL's with electromagnetic wigglers powered by millimeter wavelength gyrotrons are presented. Gyrotron powered wigglers appear promising for operation of compact FEL's in the infrared regime using moderate energy (<10 MeV) electron beams.

Research Organization:
Plasma Fusion Center and the Dept. of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139
OSTI ID:
6808928
Journal Information:
IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE23:1; ISSN IEJQA
Country of Publication:
United States
Language:
English

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Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFICATION
AMPLIFIERS
BASIC INTERACTIONS
BEAMS
COMPTON EFFECT
ELASTIC SCATTERING
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC FIELDS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETS
ELECTRON BEAMS
ELECTRON TEMPERATURE
ELECTRONIC EQUIPMENT
ENERGY RANGE
EQUIPMENT
FREE ELECTRON LASERS
GAIN
INFRARED SPECTRA
INTERACTIONS
LASER CAVITIES
LASERS
LEPTON BEAMS
MAGNETS
MEV RANGE
MEV RANGE 01-10
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
OPERATION
PARTICLE BEAMS
RESONANCE
SCALING LAWS
SCATTERING
SPECTRA
WAVEGUIDES
WAVELENGTHS
WIGGLER MAGNETS