DocumentCode
3552089
Title
A solution to the problem of spontaneous deflection of the beam in TWT´s with low helix voltage
Author
Maurer, D.W. ; Francois, E.E. ; Zacharias, A.
Author_Institution
Bell Telephone Laboratories, Incorporated, Murray Hill, New Jersey
Volume
9
fYear
1963
fDate
1963
Firstpage
10
Lastpage
10
Abstract
The spontaneous deflection of the beam in low voltage, typically low noise, traveling wave tubes has been studied and attributed to the accumulation of stray charges on the glazed helix rods. A means of measuring the tendency of the helix to show these charging effects will be described. A method of processing of the complete helix which prevents the accumulation of charges but does not seriously affect its cold loss or other microwave properties will be reviewed. Traveling wave tubes that have been made with helices processed by this technique cannot be made to show charging effects or beam deflections. Six tubes have accumulated 18,000 tube hours with no failures.
Keywords
Current measurement; Laboratories; Loss measurement; Low voltage; Magnetic noise; Magnetic shielding; Microwave measurements; Microwave theory and techniques; Noise figure; Telephony;
fLanguage
English
Publisher
ieee
Conference_Titel
Electron Devices Meeting, 1963 International
Type
conf
DOI
10.1109/IEDM.1963.187353
Filename
1473578
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