Development of coatings to improve RF voltage stand-off
For a reliable operation of Ion Cyclotron RF (ICRF) systems on fusion devices with magnetic confinement at high power, an improvement of the voltage stand-off of RF transmission lines and antennas is required. Coatings for RF conductors have been developed to increase the voltage stand-off. Stainless steel is often used as a basis material for the antenna components. The technique to reduce magnetic permeability of steel was elaborated. A technological process for deposition of TiN, TiC, W, Ta coatings with and without Cu sub layer was developed and tested. The coatings on the components of a RF probe were prepared for experiments with high RF voltage. The work function of the deposited coatings was measured. The application of the coating technology to the ICRF systems is discussed.
Bibliographic Reference: An article published in:Surface and Coatings Technology, Volumes 174-175, September-October 2003, Pages 176-180. (Proceedings of the Eighth International Conference on Plasma Surface Engineering)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1016/S0257-8972%2803%2900409-2
Record Number: 200317039 / Last updated on: 2003-10-22
Original language: en
Available languages: en