In electron cyclotron heating systems using gyrotrons with powers up to 1MW, calorimetric loads and absorbers for stray radiation are needed. Furthermore, absorbing coatings are used inside plasma vessels of fusion experiments (e.g. W7-X). For high-power millimetre waves, absorbing coatings on copper or aluminium with optimized properties are required. In this context, measurements of the absorption coefficient of coatings from B/sub 4/C and various mixtures of Al/sub 2/O/sub 3/ and TiO/sub 2/ are presented as a function of thickness, angle of incidence and frequency, and dielectric properties are deduced unambiguously.


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    Title :

    Characterization of absorber materials for high-power millimetre waves


    Contributors:
    Wacker, R. (author) / Leuterer, F. (author) / Wagner, D. (author) / Hailer, H. (author) / Kasparek, W. (author)


    Publication date :

    2002-01-01


    Size :

    143598 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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