A design software suite for periodic permanent magnet stacks

Author

Chia-Lie Chang ; Baird, M. ; Chernin, D. ; Czarnaski, M. ; Harper, R. ; Holstein, D.G. ; Levush, B.

Author_Institution

SAIC, McLean, VA, USA

fYear

2000

fDate

2-4 May 2000

Abstract

We report on an advanced analysis tool that facilitates the design and development of periodic permanent magnet (PPM) focusing systems used in traveling wave tubes (TWTs). The tool consists of three modules that share design data through a graphical user interface. One module, called mPPM, analyzes an infinitely long periodic stack using an application of magnetic circuit theory. The second module analyzes beam stability by computing the focusing properties of the stack as a user-specified electron beam propagates through it. The third module is the LesPPM code of R. Jackson, which computes the B-field of a finite length PPM stack, i.e. a magnet stack with open ends, using an equivalent coil approach.

Keywords

electron beam focusing; electronic design automation; microwave tubes; periodic structures; permanent magnets; travelling wave tubes; B-field; beam stability; design software suite; equivalent coil approach; finite length PPM stack; focusing properties; focusing systems; graphical user interface; infinitely long periodic stack; periodic permanent magnet stacks; traveling wave tubes; user-specified electron beam; Coils; Electron beams; Graphical user interfaces; Magnetic analysis; Magnetic circuits; Magnetic flux; Magnetostatic waves; Permanent magnets; Software design; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2000. Abstracts. International

Conference_Location

Monterey, CA, USA

Print_ISBN

0-7803-5987-9

Type

conf

DOI

10.1109/OVE:EC.2000.847428

Filename

847428