Regular octagonal tri-cyclic magnetic field coil

Abstract

The invention discloses a regular octagonal tri-cyclic magnetic field coil which comprises three regular octagonal coils, wherein the axes of the three regular octagonal coils are coincided, and the three regular octagonal coils are same in current size and direction. Compared with a traditional Helmholtz coil, the regular octagonal tri-cyclic magnetic field coil is a six-level uniformity coil; non-uniform degree of the magnetic field is reduced by two orders of magnitudes; the uniformity of a magnetic field region created by the coil in same physical dimension is obviously increased; the regular octagonal tri-cyclic magnetic field coil has the characteristics of easiness in processing and mounting.

Description

technical field [0001] The invention relates to a magnetic field coil, in particular to a regular octagonal three-ring magnetic field coil capable of producing sixth-order uniformity. Background technique [0002] Artificially create a magnetic field space to form a non-magnetic space or generate a vector magnetic field. Coil technology is usually used. The core of coil technology can be expressed in popular terms: the higher the level of uniformity of the magnetic field, the better. The geometric size of the coil and the geometric size of the uniform area The smaller the ratio, the better. [0003] The current coil structure generally adopts two-ring circular or square Helmholtz coils. Whether it is a circular or square Helmholtz coil, it is a fourth-order uniformity coil, and the uniformity order of the coil is low. To achieve uniformity in a certain area, the geometric size of the coil is relatively large, and in the actual processing of the coil, it is difficult to proc...

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Problems solved by technology

[0003] The current coil structure generally adopts two-ring circular or square Helmholtz coils. Whether it is a circular or square Helmholtz coil, it is a fourth-order uniformity coil, and the uniformity order of the coil is low. To achieve uniformity in a certain area, the geometric size of the coil is relatively large, and in the actual processing of the coil, it is difficult to process the skeleton of the circular coil when the size is close to 1m or larger, and the skeleton of the square coil is relatively easy to process and manufacture , but during winding, due to the existence of right angles, the force on the wire coil is not uniform, so the coil loosens after a long time of work, resulting in a change in the coil constant, which in turn affects the uniform area of ​​the coil

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