Test results of superconducting AC magnets for magnetic refrigeration experiment
Journal Article
·
· IEEE Transactions on Magnetics
- Oak Ridge National Lab., TN (United States)
Magnetic refrigeration can be achieved by cycling the magnetic field while leaving the magnetic material and the magnet stationary to avoid the large electromagnetic force problem. Two superconducting magnets were used to test this approach. First, the authors reconfigured a force-cooled cable-in-conduit magnet to operate with liquid rather than supercritical helium. Limited by the available power supply voltage, the fastest charging rate achieved was 10 s to 5 T. A second low loss magnet was acquired for operation to 7 T with a 6-s duty cycle. This is bath-cooled magnet with potted sub-coils. The conductor is a 20-strand Rutherford-type cable with Ebanol insulation on each strand. This magnet quenched prematurely at 6.4 T. It was charge rate sensitive and the fastest charging rate achieved was 10 s to 5.8 T.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 33536
- Report Number(s):
- CONF-930926--
- Journal Information:
- IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt2 Vol. 30; ISSN IEMGAQ; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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