Design of a quasioptical gyrotron experiment with large mirror separation

T. A. Hargreaves

doi:10.1117/12.2297808

1 October 1991 Design of a quasioptical gyrotron experiment with large mirror separation

T. A. Hargreaves

Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15762N (1991) https://doi.org/10.1117/12.2297808
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

The design of a quasioptical gyrotron resonator with large mirror separation is presented. The large mirror separation reduces the peak ohmic heating density on the resonator mirrors to 400 W/cm², well within the limits for cw operation. The longitudinal mode density in the resonator is also reduced to 0.2% by increasing the mirror separation, with approximately 20 modes within the interaction bandwidth of the resonator. This design will allow the rf radiation to propagate out of the vacuum system without any reflections, allowing relatively simple diagnosis and analysis of the output power. The large mirror separation also leaves room for a beam splitter to be inserted into the interior of the resonator to reflect a small amount of power out a side port for diagnosis. This will allow direct measurement of the resonator modes including any trapped harmonic modes.

Citation Download Citation

T. A. Hargreaves "Design of a quasioptical gyrotron experiment with large mirror separation", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15762N (1 October 1991); https://doi.org/10.1117/12.2297808

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