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Cumulative interaction in the deflection cavities of a high-power magnicon amplifier

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2 Author(s)
Nezhevenko, O.A. ; Omega-P Inc., New Haven, CT, USA ; Yakovlev, V.P.

A major factor limiting the output power of a high-power magnicon is RF breakdown in its penultimate cavity. Utilization of the principal of angle summing allows us to achieve cumulative interaction between a beam and RF fields of the magnicon deflection system, and thus to decrease the maximum electric field in the penultimate cavity. In this paper, the problems of implementing a cumulative interaction in a magnicon deflecting system are discussed. A deflecting system with coupled cavities working according to the principal of angle summing, which has been tested with success experimentally, has a limitation caused by instabilities that can limit pulse duration at a power level higher than a few tens of milliwatts. The method described employs a set of uncoupled penultimate cavities to obtain cumulative interaction at high power without sacrifice of pulsewidth

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Plasma Science, IEEE Transactions on  (Volume:28 ,  Issue: 3 )