Field enhancement of a 12. 5-T magnet using holmium poles
Unlike conventional ferromagnetic materials such as iron and Supermendur, which produce saturation magnetization fields of approximately 2 T, several of the rare-earth elements (holmium, terbium, erbium, gadolinium, and dysprosium) yield saturated fields of nearly 4 T. This property makes these rare-earth metals particularly attractive as flux concentrators for use in superconducting magnets. This report concerns the use of holmium inserts to enhance the peak useful field of the nominally 12.5-T, 5-cm-bore tape magnet manufactured by the Intermagnetics General Corporation (IGC). Nonlinear magnetostatic analysis indicates that this field increases to nearly 16 T with the rare-earth poles inserted within the bore on both sides of the coil's split-plane radial access gap. This paper focuses on computer modeling methods and experimental results.
- Research Organization:
- Lawrence Livermore National Laboratory, University of California, Livermore, CA
- OSTI ID:
- 6484850
- Report Number(s):
- CONF-840937-
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. MAG 21:2; Conference: Applied superconductivity conference, San Diego, CA, USA, 9 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
36 MATERIALS SCIENCE
HOLMIUM
MAGNETIC PROPERTIES
SUPERCONDUCTING MAGNETS
MAGNET POLE PIECES
MAGNETIC FLUX
COMPUTERIZED SIMULATION
MAGNETIC FIELDS
MAGNETIZATION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELEMENTS
EQUIPMENT
MAGNETS
METALS
PHYSICAL PROPERTIES
RARE EARTHS
SIMULATION
SUPERCONDUCTING DEVICES
420201* - Engineering- Cryogenic Equipment & Devices
360104 - Metals & Alloys- Physical Properties