Accession Number : AD0689472

Title :   STUDY OF CYCLOTRON AND SYNCHRONOUS WAVE DEVICES.

Descriptive Note : Triannual rept. no. 2, Nov 68-1 Feb 69,

Corporate Author : MICROWAVE ASSOCIATES INC BURLINGTON MASS

Personal Author(s) : Paik,S. F. ; Harris,N. W. ; Briggs,R. J.

Report Date : FEB 1969

Pagination or Media Count : 47

Abstract : An experimental study of the circuit used in earlier experiments showed that oscillations observed were due to the interaction of the electron beam with undesirable modes and space-harmonics which were neglected in the previous study. Two types of helix-derived circuits, a tightly wound helix with a longitudinally conducting shield and a bifilar helix, were considered as possible substitutes for the twisted slow-wave structure. The bifilar helix appears attractive as an experimental tool to investigate various interaction mechanisms and the velocity spread. The effect of finite size of the beam on the longitudinal velocity spread was considered. The result of theoretical study shows that the ultimate efficiency and/or the power output may be limited by this effect. (Author)

Descriptors :   (*TRAVELING WAVE TUBES, CYCLOTRON WAVES), ELECTRON BEAMS, INTERACTIONS, CIRCUITS, HELIXES, THEORY

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE