Standard Solenoids

The most frequently requested superconducting magnets are standard solenoids. Low and intermediate field solenoids are designed with uniform current densities throughout the windings. At higher fields, it is necessary to grade the conductor diameters in order to achieve the necessary current and field in a compact design. This can result in two or more sections of the coil with differing current densities.

Typically, these magnets have bore diameters between 1 inch and 6 inches and homogeneities in the range of 1.0% to 0.1% in a 1 cm diameter spherical volume (DSV). Fields up to 9 Tesla are generated with NbTi solenoids. Higher fields generally require Nb3Sn conductors when operated at the normal boiling temperature of liquid helium (4.2K).

Three tapped brass inserts are incorporated into the top flange of the magnet for mounting the magnet with the axial field in the vertical direction. For horizontal field mounting, a separate plate is provided on the side of the magnet and the current lugs and persistent switch can be mounted on it.

These magnets are quite versatile, very robust and can be used for a great variety of purposes, including:

Superconductivity Studies: Hall Effect; Fermi Surface Studies, Magnetoresistivity; Magnetocaloric, Magnetostriction Studies; Faraday Rotation; Bubble Chambers; Nuclear Beam Spin Flipping; Magnetization Measurements, Energy Storage, Magnetic Separation; Homopolar Motors; and Beam Focusing.
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