Klystron having electrostatic quadrupole focusing arrangement
OwnerAlfred W. Maschkeinventor
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Abstract
A klystron includes a source for emitting at least one electron beam, and an accelerator for accelarating the beam in a given direction through a number of drift tube sections successively aligned relative to one another in the direction of the beam. A number of electrostatic quadrupole arrays are successively aligned relative to one another along at least one of the drift tube sections in the beam direction for focusing the electron beam. Each of the electrostatic quadrupole arrays forms a different quadrupole for each electron beam. Two or more electron beams can be maintained in parallel relationship by the quadrupole arrays, thereby enabling space charge limitations encountered with conventional single beam klystrons to be overcome.
Claims5
A klystron comprising means for emitting a plurality of electron beams, means for accelerating the electron beams in a given direction, a number of drift tube sections successively aligned relative to one another in the direction of the electron beams for velocity modulating the electron beams in response to radio frequency energy coupled to said drift tube sections, and a number of electrostatic quadrupole arrays successively aligned relative to one another along at least one of said drift tube sections in the direction of the electron beams for focusing the electron beams and maintaining the electron beams in spaced apart parallel relationship to one another, each of said electrostatic quadrupole arrays including a plurality of electrode in a common plane forming a different quadrupole for each of the electron beams.
Dependencies are inferred from the claim text.