Electron beam superimposition method and apparatus

Details Electron beam superimposition method and apparatus Electron beam superimposition method and apparatus

1997-08-28

1998-12-01

Porta, David P.

X-ray or gamma ray systems or devices

Source

Electron tube

378138, H01J 3514

Patent

active

058449639

ABSTRACT:
A method and apparatus for superimposing a plurality of electron beams at a desired location after X-ray tube manufacturing processes are generally complete. The method is embodied in providing mechanical and electrical means which are internal to the X-ray tube which provide means for adjustment of a focal point of a plurality of electron beams being emitted from a cathode assembly to thereby provide precise control of where the plurality of electron beams achieve superimposition on a target anode.

REFERENCES:
patent: 3783333 (1974-01-01), Atlee
patent: 4065689 (1977-12-01), Pleil
patent: 4685118 (1987-08-01), Furbee et al.
patent: 5303281 (1994-04-01), Koller et al.

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