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The presence of an electron beam in a quasi-optical gyrotron cavity alters the structure of the fields from that of the empty cavity. A computer code has been written which calculates this alteration for either an electron beam or a thin dielectric tube placed in the cavity. Experiments measuring the quality factor of such a cavity were performed for the case of a dielectric tube and compared with the predictions of the code. Simulations of the case of an electron beam indicate that self-consistent effects are relatively small provided the device operates at or near the optimum detuning.

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Authors: ANTONSEN T M, University of Maryland, Laboratory for Plasma Research (US);BONDESON A ET AL., Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH)
Bibliographic Reference: Article: 17th International Conference on Infrared and Millimeter Waves, Pasadena (US), December 14-18, 1992
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