Electromagnets
AssigneeOxford Magnet Technology Limited
InventorsRussell Peter Gore, Graham Gilgrass
Life of this patent
Estimating the term…
Abstract
A superconducting electromagnet comprising an annular inner helium container vessel within which the windings of an annular magnet are contained, an outer annular vacuum chamber within which the said inner vessel is contained, and a generally annular hollow thermal shield arranged to enclose the inner vessel and disposed between the said vessel and the said chamber in spaced apart relationship so that the longitudinal axes of the said shield and the magnet are substantially co-extensive, an outer wall of the shield being defined by concentric generally cylindrical mutually spaced inner and outer thermal screens, which in combination define a double wall screen, the shield having a double wall only in a region concentric with the longitudinal axis of the magnet.
Claims6
A superconducting electromagnet comprising:
- an annular inner helium container vessel,
- windings of an annular magnet contained within said inner vessel,
- an outer annular vacuum chamber within which the inner vessel is contained, and
- a generally annular hollow thermal shield enclosing the inner vessel and disposed between said inner vessel and said outer annular vacuum chamber in spaced apart relationship so that longitudinal axes of said shield and the magnet are substantially co-extensive,
- an outer wall of the shield being at least partly defined by generally cylindrical mutually spaced inner and outer thermal screens which, in combination, define a double wall screen,
- an inner wall of the shield being defined by an additional thermal screen having a single cylindrical wall which is concentric with the longitudinal axis of the magnet, the outer thermal screen being joined by a pair of generally annular end caps to the inner wall of the shield, and the inner thermal screen being axially spaced apart from the pair of end caps.
Dependencies are inferred from the claim text.