DocumentCode
1023411
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, Inc., Murray Hill, N. J.
Volume
12
Issue
1
fYear
1965
fDate
1/1/1965 12:00:00 AM
Firstpage
40
Lastpage
44
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 22,000 tube hours with no failures.
Keywords
Ceramic glazes; Electron beams; Electron tubes; Insulation; Laboratories; Low voltage; Microwave theory and techniques; Surface charging; Telephony; Wire;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/T-ED.1965.15449
Filename
1473913
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