This paper describes the improvement of mission uniformity in magnetron injection guns (MIGs) for gyrotrons, and on an inverted MIG for a Ku band coaxial gyrotron. High-power gyrotrons and gyroklystrons are currently in development for a number of RF applications. The annular electron beams for these devices are created with a MIG operating temperature limited, which means the emission current is a function of the localized temperature. Efficient operation of gyrotrons and gyroklystrons requires a high-quality electron beam with low-velocity spread and uniform current density around the circumference of the beam. Advances in computer modeling allow design of electron guns with velocity spreads less than 8%, which is adequate for efficient operation; however, there is substantial evidence that large azimuthal asymmetries in current emission often occur. This can lead to substantial reductions in device efficiency.


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    Title :

    Advanced magnetron injection guns


    Contributors:
    Read, M.E. (author) / Ives, R.L. (author) / Miram, G. (author) / Borchard, P. (author) / Falce, L. (author) / Lawson, W. (author) / Nusinovich, G. (author) / Granatstein, V. (author) / Gunther, K. (author)


    Publication date :

    2004-01-01


    Size :

    105649 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Advanced magnetron injection guns for coaxial gyrotrons and gyroklystrons

    Read, M. / Ives, L. / Miram, G. et al. | IEEE | 2002


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    Read, M. / Ives, L. / Miram, G. et al. | British Library Conference Proceedings | 2002


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    Edgcombe, C. J. | British Library Online Contents | 1995