Accession Number:

AD0760047

Title:

Design Study of a Large Area Cylindrical Electron Gun

Descriptive Note:

Final rept. 1 Jun-31 Dec 1972

Corporate Author:

VARIAN ASSOCIATES INC SAN CARLOS CA EIMAC DIV

Personal Author(s):

• Sain, William H.

Report Date:

1972-12-31

Pagination or Media Count:

58.0

Abstract:

The study was concerned with the design of a large cylindrical electron gun 5 meters long by 1 to 2 meters in diameter and the application of state of the art high power electron tube technology to this design. A design which applies welded thoriated tungsten mesh cathodes and refractory metal grids as used in power tubes was investigated. Vibration characteristics of prototype mesh filaments were calculated and measurements of filament resonant frequencies confirmed the predictability of the behavior of mesh filaments. Experiments were performed on titanium foil windows which were diffusion bonded or brazed to cylindrical sealing members. These were vacuum tight after high temperature bakeout and confirmed the feasibility of fabricating modular, bonded electron window structures.

Descriptors:

• *ELECTRON GUNS
• CATHODES
• ELECTRON IRRADIATION
• EXCITATION
• GAS LASERS
• TUNGSTEN

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE