NDLI: Solenoidal transport of low-voltage sheet beams for millimeter wave amplifiers

Content Provider	IEEE Xplore Digital Library
Author	Pasour, J. Nguyen, K. Antonsen, T. Larsen, P. Levush, B.
Copyright Year	2009
Description	Author affiliation: University of Maryland, College Park, 20742, USA (Antonsen, T.) \|\| Beam Wave Research, Bethesda, MD 20814, USA (Nguyen, K.) \|\| Vacuum Electronics Branch, US Naval Research Laboratory, Washington, DC 20375, USA (Pasour, J.; Larsen, P.; Levush, B.)
Abstract	The stable transport of high-perveance, low-voltage sheet electron beams is a key requirement for the successful development of compact, high-power sheet beam amplifiers. Here, we examine the transport of such beams in a solenoidal magnetic field and compare and contrast this transport with that produced by a periodic permanent magnet array. It is shown that a solenoid can stably transport a sheet beam of significantly higher current density than a periodic array and that diocotron effects, which are usually cited as a reason for not considering solenoidal transport, can be effectively suppressed over propagation distances needed for MMW amplifiers. Based on these considerations, we have designed a sheet beam gun and permanent magnet solenoid, which are now being fabricated as a beam stick for a W-band extended interaction klystron.
Starting Page	300
Ending Page	301
File Size	483505
Page Count	2
File Format	PDF
ISBN	9781424435005
DOI	10.1109/IVELEC.2009.5193421
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-28
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High power amplifiers Electron beams Permanent magnets Solenoids Current density Radio frequency Radiofrequency amplifiers Laboratories Magnetic fields Klystrons high perveance Sheet beam electron gun millimeter wave vacuum electronic amplifier
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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3.4: Sheet beam stick for low-voltage W-band extended interaction klystron (EIK)

High-perveance W-band sheet-beam electron gun design

Low-voltage (≤ 20 kV) sheet beam with solenoidal focusing for w-band extended interaction klystron (EIK)

Forming of high current density sheet electron beams for a sub-THZ TWT vacuum aamplifiers

Focusing high-current sheet electron beam with elliptical solenoid

High-power MMW sheet beam amplifiers

Sheet-beam Electron Gun Design for Millimeter and Sub-millimeter Wave Vacuum Electronic Sources

Beam Generation and Transport in THz Tubes

3.5: Sheet beam EIK sensitivity to multimoding and circuit imperfections

Solenoidal transport of low-voltage sheet beams for millimeter wave amplifiers

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