Multidiameter cavity for reduced mode competition in gyrotron os

Details Multidiameter cavity for reduced mode competition in gyrotron os Multidiameter cavity for reduced mode competition in gyrotron os

1982-12-10

1985-07-23

LaRoche, Eugene R.

Oscillators

Beam tube

With electron bunching or velocity variation means

315 36, 315 5, H03B 908

Patent

active

045311030

ABSTRACT:
In a gyro-monotron oscillator a single, "monotron" cavity is used to interact with the electron beam. To handle very high powers without excessive cavity loss, the cavity is excited in a higher order mode such as TE.sub.0m1. Other modes can be resonant in the cavity, interfering with the operation when their frequency is near the operating frequency.
To increase the mode separation, an upstream section of the cavity is made smaller, to support only a lower-order mode such as TE.sub.011. Also, the beam is pre-bunched by this lower order, interference-free mode so has less tendency to interact with spurious modes in the higher order cavity.

REFERENCES:
patent: 4388555 (1983-06-01), Symons et al.
patent: 4398121 (1983-08-01), Chodorow et al.

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