A cylindrical superconducting magnet with a shield of ferromagnetic material
A cylindrical superconducting magnet comprising a plurality of axially-aligned superconducting coils 12a-f and a ferromagnetic (e.g. iron) shield 11. The ferromagnetic shield comprises a cylindrical outer surface (5b, figure 2) concentric with the coils and two end surfaces (5a and 5c, figure 2), 10...
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Main Author | |
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Format | Patent |
Language | English |
Published |
11.04.2018
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Subjects | |
Online Access | Get full text |
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Summary: | A cylindrical superconducting magnet comprising a plurality of axially-aligned superconducting coils 12a-f and a ferromagnetic (e.g. iron) shield 11. The ferromagnetic shield comprises a cylindrical outer surface (5b, figure 2) concentric with the coils and two end surfaces (5a and 5c, figure 2), 10 each end surface including a hole, concentric with the coils. A cryogenic refrigerator 8 may be mounted on the surface of the ferromagnetic shield 11. The system may include a bore tube (7, figure 2) sealed to the ferromagnetic shield 11 and enclosing an evacuated volume (a vacuum). Radiation therapy equipment, such as a linear accelerator (LINAC) 13, a deflection unit 14, a multi-leaf 15, a beam focussing arrangement 16 or a collimator 17, may be disposed on the outer surface of the shield 11. The purpose of the invention is to restrain stray fields generated by superconducting magnets 12a-f. |
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Bibliography: | Application Number: GB20150022122 |