Accession Number : AD0477091

Title :   NEW SWITCHING CONCEPTS.

Descriptive Note : Quarterly progress rept. no. 5, 1 Jun-31 Aug 65,

Corporate Author : EDGERTON GERMESHAUSEN AND GRIER INC BEDFORD MA SYSTEMS DIV

Personal Author(s) : Thomas, James ; Brink, Hans Vanden ; Turnquist, David

Report Date : 15 NOV 1965

Pagination or Media Count : 35

Abstract : Two experimental vacuum switch tubes were constructed and additional testing and evaluation was continued on a previously constructed tube. Measurements of the tube performance as a function of the voltage applied to the central section of a three-segment drift tube indicate that a reduction in the drift tube length by 20% is required so that the location of the beam waist will coincide with the mid-plane between electron gun and collector. A secondary emission suppressor grid with a higher transmission and with good mechanical rigidity has been incorporated into the latest tube. The analog computer plots show that the gun design for the convergent beam switch tube is close to optimum. The limiting resolution and capabilities of the analog computer have been approached with this gun design, so that it is almost impossible to accurately predict the effect of additional small refinements to the electron gun design with the analog computer. Digital computer analysis at the University of Michigan indicates that the electron trajectories in the gun region have 100% laminarity. The small amount of non-laminarity in the collector region is probably due to aberrant effects of the anode aperture electron lens. (Author)

Descriptors :   *DISCHARGE TUBES), (*VACUUM SWITCHES, SECONDARY EMISSION, VOLTAGE, ELECTRON GUNS, MAGNETIC FIELDS, ELECTRON BEAMS, GAS DISCHARGES, PULSE MODULATION, CATHODES(ELECTRON TUBES), ANODES(ELECTRON TUBES).

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE