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Development of coatings to improve RF voltage stand-off

MPS-Authors
/persons/resource/persons108730

Bobkov,  V. V.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108730

Bobkov,  Vl. V.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110070

Noterdaeme,  J.-M.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110796

Wilhelm,  R.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Bobkov, V. V., Azarenkov, M., Bizyukov, O., Bobkov, V. V., Noterdaeme, J.-M., & Wilhelm, R. (2003). Development of coatings to improve RF voltage stand-off. Surface and Coatings Technology, 174-175, 176-180. doi:10.1016/S0257-8972(03)00409-2.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-3274-8
Abstract
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 sublayer 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.