Coupled cavity travelling wave tubes

Details Coupled cavity travelling wave tubes Coupled cavity travelling wave tubes

H - Electricity

01

J

316/7

H01J 9/00 (2006.01) B23P 13/02 (2006.01) H01J 23/24 (2006.01)

Patent

CA 1227242

12 Abstract Improvements in or relating to coupled cavity travelling wave tubes A millimetre coupled cavity travelling wave tube has its slow wave structures formed by a hobbing process. In a preferred construction, each slow wave structure is made of two individual halves each extending for the length of the structure. Each half contains one half of each cavity and one half of each beam hole and all of the portions of cavity and portions of beam hole in each half are formed in one hobbing operation. Coupling holes between cavities are formed where required by a process (e.g. spark erosion) separate from hobbing and if ferrules or drift tubes are required to extend out of the cavity separating walls in the finished tube, the beam coupling holes are made oversized and individual ferrules are brazed into position. The two halves of the slow wave structure are united by furnace brazing.

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