Numerical investigation of ICRF antenna designs and heating schemes for Alcator C
Initially, approximately 500 kW of rf power will be launched through one port of Alcator C at a frequency of 180 to 220 MHz. We use a hot-plasma slab model to examine antenna coupling and power deposition for second harmonic (H, B/sub 0/ = 6.7 T) heating regime. The plasma medium is assumed uniform in y and z and is stratified in x. Three-dimensional, four-mode field solutions are obtained by solution of the boundary condition equations in the x direction, and by Fourier transform methods in y and z. We study the dependence of radiation resistance upon coupling parameters such as antenna width and radial position. This is interpreted in terms of the spectral (k/sub y/, k/sub z/) distribution of power, the effect of the evanescent region at the edge, and the attenuation length of the waves.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Plasma Fusion Center
- DOE Contract Number:
- AC02-78ET51013
- OSTI ID:
- 6318640
- Report Number(s):
- DOE/ET/51013-74; PFC/CP-83-4; CONF-830210-16; ON: DE83010246
- Country of Publication:
- United States
- Language:
- English
Similar Records
ICRF antenna coupling theory for a cylindrically stratified plasma
Initial Operation of the Alcator C-Mod ICRF Antennas with High-Z Metal Antenna Guards
Related Subjects
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ALCATOR DEVICE
ANTENNAS
CLOSED PLASMA DEVICES
COUPLING
DESIGN
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY TRANSFER
EQUIPMENT
HEATING
HIGH-FREQUENCY HEATING
ICR HEATING
MICROWAVE EQUIPMENT
PLASMA HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES