Variable-strength multipole beamline magnet
US6573817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H7/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A multipole beamline magnet (10) includes a plurality of stationary poles (12) formed of ferromagnetic material and one or more permanent magnets (14) that are disposed between the plurality of stationary poles. Each of the permanent magnets supplies magnetomotive force to two adjacent stationary poles, so that the poles produce a magnetic field in a central space (16) defined by the poles. A mechanical axis (18) of the beamline magnet is defined to extend through the central space, perpendicularly to the plane defined by the poles and the magnets. The beamline magnet further includes a linear drive (20) that is adapted to move the permanent magnet(s) perpendicularly to the mechanical axis. Thus constructed, the beamline magnet produces a high-quality field using its stationary poles, and further allows for selective adjustment of the magnetic field strength and the magnetic centerline by collectively or selectively moving the permanent magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.