Coupling current and hysteresis losses of Bi2212 round wires with twisted filaments
Coupling current and hysteresis losses of Bi2212 round wires with twisted filaments
AC loss measurements have been carried out on Bi2212 round wires of different twist pitches. With systematical variation of sample temperature (5 K-70 K) and ac field amplitude (? 0.2 T) as well as frequency (20 Hz-2 kHz) , this work shows (1) the full coupling of the non-twisted wire, (2) the uncoupling of sub-wires by twisting at moderate pitch up to 12 mm, (3) a relatively short time constant of milliseconds for the coupling current due to a high transverse resistivity, and (4) an effective (de)coupling diameter of 0.4 mm about 1.6 × of sub-wire bundles. The results suggest a promising potential for improving filament decoupling
1-5
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Pelegrin, M.J.
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Falorio, I.
65afc7a9-336b-4cce-a034-0c37df06e2c4
Ballarino, A.
fbb2b272-16ce-4fcc-a2da-5fefa0ef16da
Bottura, L.
83eaba39-2c5e-45ad-91ca-76ea62dc57ed
Miao, H.
cc595708-bb96-4c86-83b5-ee10e1f3c46b
Huang, Y.
a6d20fd7-d95a-461a-81bc-ec4a714cf300
Young, E.A.
d3a881b0-a564-41f5-9843-34ae86da360f
13 February 2015
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Pelegrin, M.J.
3a110c1a-ad88-4f90-bffc-7a0b5042f240
Young, E.A.
d3a881b0-a564-41f5-9843-34ae86da360f
Falorio, I.
65afc7a9-336b-4cce-a034-0c37df06e2c4
Ballarino, A.
fbb2b272-16ce-4fcc-a2da-5fefa0ef16da
Bottura, L.
83eaba39-2c5e-45ad-91ca-76ea62dc57ed
Miao, H.
cc595708-bb96-4c86-83b5-ee10e1f3c46b
Huang, Y.
a6d20fd7-d95a-461a-81bc-ec4a714cf300
Yang, Y., Pelegrin, M.J., Falorio, I., Ballarino, A., Bottura, L., Miao, H. and Huang, Y.
,
Young, E.A.
(ed.)
(2015)
Coupling current and hysteresis losses of Bi2212 round wires with twisted filaments.
IEEE Transactions on Applied Superconductivity, 25 (3), .
(doi:10.1109/TASC.2014.2373655).
Abstract
AC loss measurements have been carried out on Bi2212 round wires of different twist pitches. With systematical variation of sample temperature (5 K-70 K) and ac field amplitude (? 0.2 T) as well as frequency (20 Hz-2 kHz) , this work shows (1) the full coupling of the non-twisted wire, (2) the uncoupling of sub-wires by twisting at moderate pitch up to 12 mm, (3) a relatively short time constant of milliseconds for the coupling current due to a high transverse resistivity, and (4) an effective (de)coupling diameter of 0.4 mm about 1.6 × of sub-wire bundles. The results suggest a promising potential for improving filament decoupling
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Accepted/In Press date: 17 November 2014
Published date: 13 February 2015
Organisations:
Engineering Science Unit
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Local EPrints ID: 377389
URI: http://eprints.soton.ac.uk/id/eprint/377389
ISSN: 1051-8223
PURE UUID: 6ce96b85-83a0-4ec9-a92f-7eae42212b13
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Date deposited: 04 Jun 2015 08:30
Last modified: 15 Mar 2024 02:45
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Contributors
Author:
M.J. Pelegrin
Author:
I. Falorio
Author:
A. Ballarino
Author:
L. Bottura
Author:
H. Miao
Author:
Y. Huang
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