Electron cyclotron heating in tokamaks

Technical Report · Tue Nov 01 04:00:00 EST 1977

DOI:https://doi.org/10.2172/5333085· OSTI ID:5333085

Eldridge, O.; Namkung, W.; England, A. C.

Tokamaks may be efficiently heated at electron cyclotron resonance by launching of the extraordinary wave from the inside of the torus with a simple waveguide aperture. For typical tokamak parameters, 90% of the incident energy is absorbed in one traversal of the resonant surface. There is an effective maximum density for linear heating at the point where the plasma frequency is equal to the cyclotron frequency. The bulk of the plasma electrons is heated, increasing the perpendicular energy with no tendency to accelerate a high energy tail of the velocity distribution. The ordinary wave may be launched from outside the torus with somewhat smaller heating efficiency. Heating rates and velocity diffusion coefficients are presented.

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5333085
• Report Number(s): ORNL/TM-6052
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
DIFFERENTIAL EQUATIONS
DIFFUSION
ECR HEATING
ELECTRON TEMPERATURE
ENERGY TRANSFER
EQUATIONS
FOKKER-PLANCK EQUATION
HEATING
HIGH-FREQUENCY HEATING
PERFORMANCE
PLASMA HEATING
QUASILINEAR PROBLEMS
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
VELOCITY