Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1997-02-24
1999-08-03
Lee, Benny T.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 533, 315 537, 315 551, 313293, 313447, H01J 2510
Patent
active
059329726
ABSTRACT:
An electron gun provides multiple convergent beamlets in a rectilinear flow for use in multiple drift tubes of a multiple beam klystron. The electron gun comprises a cathode having a concave emitting surface and an anode having a concave surface defined by respective ends of a plurality of hollow drift tubes. The anode surface is spaced from the cathode surface and has a positive voltage potential applied thereto to define a series of equipotential contour surfaces between the cathode and the anode. A plurality of grids are located between the cathode and the anode, with each one of the grids being disposed coincident with a respective one of the equipotential contour surfaces with a first one of the grids located closely adjacent to the cathode surface. Each one of the grids further has a plurality of perforations extending therethrough in substantial registration with each other and with respective openings of the plurality of drift tubes. A plurality of electron beamlets are drawn from the cathode surface through respective ones of the plurality of perforations and into respective ones of the plurality of drift tubes.
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Lee Benny T.
Litton Systems Inc.
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