Conduction-Cooled Superconducting Magnet for Material Control Application

• Published in: IEEE transactions on applied superconductivity Vol. 19; no. 3; pp. 2190 - 2193
• Main Authors: Yeon Suk Choi, Dong Lak Kim, Byoung Seob Lee, Hyung Suk Yang, Painter, T.A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Boring; Coiling; Conducting materials; Conduction cooling; Design methodology; Design optimization; Design. Technologies. Operation analysis. Testing; Electrical engineering. Electrical power engineering; Electrical machines; Electromagnets; Electronics; Exact sciences and technology; heat loads; High vacuum; Integrated circuits; Joule heating; Magnetic fields; Magnetic materials; Materials control; Materials testing; Regulation and control; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Superconducting coils; Superconducting magnets; Superconducting materials; Superconductivity; Various equipment and components; Performance evaluation; Multistage method; Cooling; magnetic fields; Thermal management (packaging); Magnet; heat loads; Control synthesis; Conduction cooling; Superconducting coils; High vacuum; Superconducting magnet; Superconducting materials; Heating; Cooling system; Cryostat; Material testing; Safety; Magnetic field; Multistage circuit; Joule effect; Machine windings; superconducting magnets
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2009.2019137

The conduction-cooled superconducting magnet with operating current of 180 A is designed, fabricated, and tested for material control application. The superconducting magnet has the effective standard warm bore of 52 mm and the maximum central field of 3 Tesla. Since magnetic field gradient should be larger at the end rather than at the center of the magnet for material control, we developed design method to optimize magnet for this purpose. The safety of the superconducting magnet is evaluated, taking into account the electro-magnetic field, heat and structure, and the superconducting coil is successfully wound by the wet-winding method. The superconducting coil is installed in the cryostat maintaining high vacuum and cooled by a two-stage GM cryocooler. The performance of the conduction-cooled superconducting magnet is discussed with respect to the supplied current, Joule heating, and cooling medium.