Magnetizing magnet
AssigneePicker International, Inc.
InventorIan Robert Young
Life of this patent
Estimating the term…
Abstract
A high temperature superconductor (HTSC) 5 is magnetized between drive coils 1,2 forming poles of a magnet connected by an iron yoke 9 by relative movement of a vacuum insulated cryostat 4 containing the HTSC and the magnetizing magnet, in order to magnetize a large area of HTSC using a magnet with a small region 3 of magnetizing flux. Alternatively, the HTSC 5 may be contained in an evacuated region of a cryostat containing the magnetizing magnet. An interconnecting chamber allows the HTSC to be moved between an operative region and a magnetizing region without substantial loss of vacuum.
Claims20
A magnet for magnetizing a high temperature superconductor having a cross-sectional area, the magnet comprising:
- a pair of poles for generating a magnetizing flux having a cross-sectional area in a cross-sectional region, the cross-sectional area of the magnetizing flux in the cross-sectional region being less than the cross-sectional area of the high temperature superconductor;
- and
- means for imparting relative movement between the high temperature superconductor and the cross-sectional region of the magnetizing flux, wherein in operation successive portions of a high temperature superconductor maintained at a temperature near its critical temperature and having a cross-sectional area greater than that of the magnetizing flux are magnetized as the portions pass through the area of magnetizing flux.
A method of magnetizing a high temperature superconductor, the method comprising:
- subjecting a region of the high temperature superconductor to a magnetizing flux having a cross sectional area, the high temperature superconductor having an area greater than the cross sectional area of the magnetizing flux;
- repeating the step of subjecting for a plurality of regions of the high temperature superconductor.
A method of magnetizing a high temperature superconductor having a cross-sectional area, the method comprising:
- using a pair of poles to generate a magnetizing flux having a cross-sectional area in a cross sectional-region, the cross-sectional area of the magnetizing flux being smaller than the cross-sectional area of the high temperature superconductor;
- and
- imparting relative movement between the high temperature superconductor and the cross-sectional region of the magnetizing flux, wherein in operation successive portions of a high temperature superconductor maintained at a temperature near its critical temperature and having a cross-sectional area greater than that of the magnetizing flux are magnetized as the portions pass through the area of magnetizing flux.
Dependencies are inferred from the claim text.