High frequency, medium power gyrotrons (Gyrotron FU series) have been developed at Fukui University as radiation sources covering a broad frequency band from millimeter to submillimeter wave region. Conversion from the gyrotron output of circular waveguide mode into a Gaussian-like beam is useful for applications of the gyrotron to a wide field. A high mode purity output is necessary for an effective conversion. In order to improve mode purity, a nonlinear cavity which is designed using a scattering matrix code and fabricated, is installed in the Gyrotron FU VA. The measurement of radiation patterns confirmed a high purity mode operation.


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    Title :

    High quality operation of high frequency gyrotron


    Contributors:
    Ogawa, I. (author) / Idehara, T. (author) / Iwata, Y. (author) / Pavlichenko, R. (author) / Mitsudo, S. (author) / Wagner, D. (author) / Thumm, M. (author)


    Publication date :

    2002-01-01


    Size :

    136375 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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