Multidiameter cavity for reduced mode competition in...

Details Multidiameter cavity for reduced mode competition in... Multidiameter cavity for reduced mode competition in...

H - Electricity

01

P

331/2

H01P 1/32 (2006.01) H01J 25/02 (2006.01) H03B 9/08 (2006.01)

Patent

CA 1216902

-10- Abstract Multidiameter Cavity for Reduced Mode Competition in Gyrotron Oscillator 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 TE0ml. 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 TE011. 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.

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