Experimental study of a 33. 3-GHz free-electron-laser amplifier with a reversed axial guide magnetic field

Journal Article · Mon Nov 25 04:00:00 EST 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.3082· OSTI ID:5987047

Conde, M E; Bekefi, G ^[1]

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1. Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts (USA)

We report on a new regime of free-electron-laser operation with reversed axial guide magnetic field, in which the rotational motion of the electrons in the helical wiggler field is opposed by the presence of the uniform guide field. The 33.3-GHz free-electron-laser amplifier is driven by a mildly relativistic electron beam (750 kV, 300 A, 30 ns) and generates 61 MW of radiation with a 27% conversion efficiency. Measurements with the conventional orientation of the axial field show a considerable loss of power and efficiency.

• OSTI ID: 5987047
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:22; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFIERS
BEAM CURRENTS
CONVERSION
CURRENTS
DATA
EFFICIENCY
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRONIC EQUIPMENT
ELECTRONS
ELEMENTARY PARTICLES
ENERGY CONVERSION
ENERGY RANGE
EQUIPMENT
EXPERIMENTAL DATA
FERMIONS
FREE ELECTRON LASERS
FREQUENCY RANGE
GHZ RANGE
GHZ RANGE 01-100
HELICITY
INFORMATION
LASERS
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELD REVERSAL
MAGNETS
MOTION
NUMERICAL DATA
OPERATION
PARTICLE PROPERTIES
POWER
RAMAN EFFECT
RELATIVISTIC RANGE
ROTATION
SPACE CHARGE
TRAJECTORIES
WIGGLER MAGNETS