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Influence of self-magnetic field on a.c. quench current level of superconducting coils

✍ Scribed by Y.J. Tang; Y. Yokomizu; N. Hayakawa; T. Matsumura; H. Okubo; Y. Kito

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 625 KB
Volume: 35
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(95)96883-n

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✦ Synopsis

The a.c. quench current level of a superconducting cable when formed into a coil is, in general, lower than that of a short sample. The current in the coil induces a selfmagnetic field on the superconducting winding. It was found from our experiments that the transition from the superconducting state to the normal one in a superconducting coil originates in that part of the winding where the self-magnetic flux density is estimated to be the largest. It is concluded that degradation of the a.c. quench current level in the superconducting coil is mainly brought about by the influence of the self-magnetic field.

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