Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1977-05-12
1979-01-30
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 535, H01J 2534
Patent
active
041374827
ABSTRACT:
A traveling wave tube adapted for periodic magnetic focusing of the electron beam has a thin-walled, non-magnetic cylinder around the slow-wave circuit portion, forming part of the vacuum envelope. A stack of metal rings surrounding the cylinder has alternating non-magnetic rings and magnetic rings, the latter forming the periodic magnet pole pieces. The rings and the thin cylinder are all brazed together to provide a strong structure. Since the cylinder does not have to be self-supporting, it is made thin enough to allow close spacing between the pole pieces and beam, providing strong magnetic field and good focusing. The brazed joints between rings are not vacuum joints, so the probability of leaks is greatly reduced.
REFERENCES:
patent: 2843775 (1958-07-01), Yasuda
patent: 3404306 (1968-10-01), Johnson
Caryotakis George
Chan George
Falce Louis R.
Luebke, deceased William R.
Wood Walter
Chatmon, Jr. Saxfield
Cole Stanley Z.
Varian Associates Inc.
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