Permanent magnet structures for XUV image sensors

Author

Leupold, Herbert A. ; Potenziani, E. ; Lowrance, John L.

Author_Institution

US Army Electron. Technol. & Devices Lab., Fort Monmouth, NJ, USA

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

3048

Lastpage

3050

Abstract

Several permanent magnet structures were designed to serve as light-weight, low-bulk field sources to guide the electron beams in X-ray/ultraviolet (XUV) image sensors. All weigh approximately a half-kilogram or less compared to the presently used structures of several kilograms. The field uniformity is on the order of a percent over the region traversed by the electron beam. Of the three structures described, all produce uniform fields over the required volume at low weight and bulk. The regular clad type is simplest and most rugged. The shifted-potential type is some 15% lighter. The semicylindrical type may be useful for low angles of XUV incidence, where compactness in the lateral dimension is required and where the required low temperatures are not a problem

Keywords

X-ray detection and measurement; electron beams; electron lenses; focusing; image sensors; magnetic lenses; permanent magnets; ultraviolet detectors; UV sensor; X-ray sensor; XUV image sensors; electron beams; low-bulk field sources; permanent magnet structures; regular clad type; semicylindrical type; shifted-potential type; uniform fields; Anodes; Electron beams; Image sensors; Instruments; Laboratories; Magnetic confinement; Magnetic flux; Magnetic materials; Permanent magnets; Telescopes;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179713

Filename

179713