Periodic Permanent Magnet Structure with Increased Useful Field.
Abstract
A device is disclosed which uses permanent magnets to manipulate charged particle beams, such as those employed in traveling wave tubes, wigglers, and undulators. Tapered pole pieces are inserted between magnets in a periodic permanent magnet array, and the taper is oriented away from the beam path. The magnets themselves may also be tapered, but the taper is oriented toward the beam path. Tapering is described according to the cross sections formed when the plane which contains the beam path intersects the magnets and pole pieces.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 24, 1987
- Accession Number
- ADD013293
Entities
People
- John P. Clarke
Organizations
- United States Army