Gradient magnetic field coils

Gradient magnetic field design and production also have many forms, using the magnetic pole gradient pole, can generate a magnetic field magnetic field is not symmetrical, is usually used in the need of the sample unidirectional force test, such as force method magnetometer, magnetic powder sample Screening; can also be multi-electromagnet, so that the magnetic field produces a uniform radial gradient magnetic field, the magnetic field is zero in the radial section, the center is evenly increasing magnetic field around the area as a standard circle, such a wide range of magnets Used in accelerators to focus and adjust charged particle beams.

Gradient magnetic field coils are used in the design of gradient magnetic fields to achieve one-dimensional, two-dimensional, three-dimensional gradient magnetic fields. The usual method is to make two coaxial coils connected in series, set the best coil spacing, get the best gradient linearity of the magnetic field axis direction, but also adjust the appropriate coil distance, get different sizes of gradient magnetic field; There are also applications where gradients of the same magnetic field direction are required. This need can be achieved by combining magnetic fields.