Magnet assembly having a plurality of nested coaxial coils
First Claim
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1. A magnet assembly comprising a plurality of nested, coaxial coils each having a plurality of turns defining radii, whereby working currents are adapted to flow in opposite directions through at least two of said coils, said plurality of turns of said coils and said radii being adapted such that when working currents flow through said coils a substantially uniform magnetic field is generated in a homogeneous region.
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Abstract
A magnet assembly, particularly for use in NMR imaging apparatus, comprises a plurality of nested, coaxial coils (2-5). The radius and number of turns of the coils (2-5) are such that when working currents flow through the coils substantially uniform magnetic field is generated in a homogeneous region (16).
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10 Claims
- 1. A magnet assembly comprising a plurality of nested, coaxial coils each having a plurality of turns defining radii, whereby working currents are adapted to flow in opposite directions through at least two of said coils, said plurality of turns of said coils and said radii being adapted such that when working currents flow through said coils a substantially uniform magnetic field is generated in a homogeneous region.
- 7. A method of operating a magnet assembly comprising a plurality of nested, coaxial coils each having a plurality of turns defining radii, the method comprising supplying electrical currents to said coils, said electrical currents flowing in opposite directions through at least two of said coils whereby the magnitude of said current in each said coil and the number of said turns and their radii is adapted such that a substantially uniform magnetic field is generated in a homogeneous region.
Specification