Electron-cyclotron-heating results on JFT-2, and their implications for the Doublet III ECH design

Conference · Mon Mar 01 04:00:00 EST 1982

OSTI ID:5225296

Prater, R.; Moeller, C. P.

Electron cyclotron heating experiments are described in which 28 GHz microwave power is injected into the JFT-2 tokamak. Ordinary mode power injected from the low field side increased the central electron temperature from 600 eV to 1000 eV with 110 kW, for densities below the ordinary mode cutoff density of 1.0 x 10/sup 13/ cm/sup -3/. Extraordinary mode power launched obliquely from the high field side increased the temperature from 600 eV to 1200 eV with 85 kW, for densities well below the extraordinary mode cutoff density, and effective heating was maintained close to the cutoff density of 1.6 x 10/sup 13/ cm/sup -3/. The extraordinary mode launched obliquely was also found to heat more efficiently and to a higher density than the extraordinary wave launched perpendicularly. On this basis, the Doublet III ECH experiments which will use up to 2 MW of 60 GHz power are designed to make use of oblique inside launch of a pure extraordinary mode. The waveguide transmission system to accomplish this is discussed.

• Research Organization: General Atomic Co., San Diego, CA (USA)
• DOE Contract Number: AT03-76ET51011
• OSTI ID: 5225296
• Report Number(s): GA-A-16689; CONF-820345-11; ON: DE82013240
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
CLOSED PLASMA DEVICES
DESIGN
DOUBLET REACTORS
ECR HEATING
ELECTROMAGNETIC RADIATION
HEATING
HIGH-FREQUENCY HEATING
JFT-2 TOKAMAK
MICROWAVE RADIATION
PLASMA DENSITY
PLASMA HEATING
RADIATIONS
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS