Free electron masers for tokamak applications

Conference · Sat Nov 01 04:00:00 EST 1986 · Fusion Technol.; (United States)

OSTI ID:7005832

Wagner, C E; Boehmer, H; Caponi, M Z

The technology of the free electron maser (FEM) has advanced to where it now is an attractive source for electron cyclotron heating (ECH) in tokamaks at reasonable cost. FEM's are capable of producing CW power at frequencies 50-400 GHz with power levels up to 5 MW/module. They can operate as a high gain (30-40 db), wide band amplifier (..delta..f/f = 5-10%). Such systems incorporate high quality (low emittance and energy spread) electron beams of moderate current which are electrostatically accelerated before passing through a large amplitude wiggler. Highly efficient recovery of the energy from the ''spent'' beam is feasible and enhances the total FEM system energy to nearly 50% even though the beam extraction efficiency is rather modest.

• Research Organization: TRW Inc., Redondo Beach, CA 90278
• OSTI ID: 7005832
• Report Number(s): CONF-860652-
• Conference Information: Journal Name: Fusion Technol.; (United States) Journal Volume: 10:3
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ACCELERATORS
AMPLIFICATION
AMPLIFIERS
AMPLITUDES
BEAM EXTRACTION
BEAMS
COST
CURRENTS
ECR HEATING
EFFICIENCY
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
ELECTROSTATIC ACCELERATORS
ENERGY EFFICIENCY
EQUIPMENT
FREE ELECTRON LASERS
FREQUENCY RANGE
GAIN
GHZ RANGE
GHZ RANGE 01-100
GHZ RANGE 100-1000
HEATING
HIGH-FREQUENCY HEATING
LASERS
LEPTON BEAMS
MAGNETS
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
PARTICLE BEAMS
PLASMA HEATING
POWER RANGE 1-10 MW
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
WIGGLER MAGNETS