Travelling wave tube having an improved magnetic focussing field

Details Travelling wave tube having an improved magnetic focussing field Travelling wave tube having an improved magnetic focussing field

1976-04-02

1977-11-08

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 36, 315 535, H01J 2534

Patent

active

040577490

ABSTRACT:
The magnetic field produced by the periodic permanent magnets of a travelling wave tube is shaped to improve the transmission ratio of the electron beam. The first zero magnetic field occurs within the magnet region, and the first peak magnetic field occurs at the first minima of the diameter of the electron beam.

REFERENCES:
patent: 2945153 (1960-07-01), Chang
patent: 2965782 (1960-12-01), Weaver
patent: 3252033 (1966-05-01), Orui
patent: 3259788 (1966-07-01), Orui
patent: 3259790 (1966-07-01), Goldfinger

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