NDLI: A Hybrid Magnetic Focusing System for Microwave Tubes

Content Provider	IEEE Xplore Digital Library
Author	Perigo, E.A. Barroso, J.J. Motta, C.C.
Copyright Year	1973
Abstract	By using a three-dimensional particle-in-cell code, this paper reports on the electron-beam propagation behavior in a drift tube under two situations. First, it investigated the influence of the acceleration potential on the beam trajectory when using a periodic permanent magnet (PPM) focusing structure upon keeping constant either the electric current or the beam perveance. Next, taking for granted the optimum focalization parameters found in the previous evaluation, it examined the feasibility of using a hybrid magnetic focusing system (HS)-a PPM array clamped at the ends by a pair of solenoids-so that the value of the magnetic flux density at the entrance to the PPM system satisfies the Brillouin field condition. An experimental setup of the HS using PPM NdFeB permanent magnets without pole pieces is also reported
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1789
Ending Page	1795
Page Count	7
File Size	1507894
File Format	PDF
ISSN	00933813
Volume Number	34
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron tubes Magnetic flux Acceleration Electron beams Solenoids Permanent magnets Magnetic flux density Magnetic confinement Microwave propagation Particle beams traveling-wave tubes Hybrid magnetic focusing system (HS) particle-in-cell (PIC) code periodic magnetic focusing
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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Influence of Periodic Magnetic Field Profiles on the Focusing of Electron Beams

General Expressions for the Magnetic Flux Density Produced by Axially Magnetized Toroidal Permanent Magnets

The "Crossed-circle" periodic permanent magnet focusing structure for high power traveling wave tubes

Analysis of Long-Periodic Permanent Magnet Structures for Electron Beam Focusing

Design Study of a Permanent-Magnet Quadrupole Focusing Lattice for a mm-wave Traveling Wave Tube

A DC design of an X-band traveling-wave tube

Off-Axis Magnetic Flux Density of a PPM Focusing System

Stability Analysis for Electron Beam Transport in Double-Periodic Permanent Magnet Focusing Structure

Electron beam alternating rotation in periodic permanent magnet focusing field has an effect on parasitic backward-wave oscillation in helix traveling wave tube

A Hybrid Magnetic Focusing System for Microwave Tubes

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Influence of Periodic Magnetic Field Profiles on the Focusing of Electron Beams

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The "Crossed-circle" periodic permanent magnet focusing structure for high power traveling wave tubes

Analysis of Long-Periodic Permanent Magnet Structures for Electron Beam Focusing

Design Study of a Permanent-Magnet Quadrupole Focusing Lattice for a mm-wave Traveling Wave Tube

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