학술논문

Lower Hybrid antennas for nuclear fusion experiments
Document Type
Conference
Source
2012 6th European Conference on Antennas and Propagation (EUCAP) Antennas and Propagation (EUCAP), 2012 6th European Conference on. :1-4 Mar, 2012
Subject
Fields, Waves and Electromagnetics
Nuclear Fusion
high power
phased array
rectangular waveguide
Lower Hybrid
Current Drive
Tore Supra
ITER
Language
ISSN
2164-3342
Abstract
The nuclear fusion research goal is to demonstrate the feasibility of fusion power for peaceful purposes. In order to achieve the conditions similar to those expected in an electricity-generating fusion power plant, plasmas with a temperature of several hundreds of millions of degrees must be generated and sustained for long periods. For this purpose, RF antennas delivering multi-megawatts of power to magnetized confined plasma are commonly used in experimental tokamaks. In the gigahertz range of frequencies, high power phased arrays known as “Lower Hybrid” (LH) antennas are used to extend the plasma duration. This paper reviews some of the technological aspects of the LH antennas used in the Tore Supra tokamak and presents the current design of a proposed 20 MW LH system for the international experiment ITER.