Quench characteristics of a Cu-Stabilized 2G HTS conductor
Quench characteristics of a Cu-Stabilized 2G HTS conductor
The prospect of medium/high field superconducting magnets using 2G HTS tapes is approaching to reality with continued enhancement in the performance of these conductors. Direct measurements of 1d adiabatic quench initiation and propagation of a Cu-stabilized 2G conductor have been carried out with spatial-temporal recording of temperature and voltage following the deposition of various local heat pulses to the conductor at different temperatures between 40K and 64K carrying different transport currents. It was found that the stabilizer-free 2G tape maintains the unique characteristics previously measured in non-stabilized tape of increasing MPZ with transport current and higher quench energy at lower temperatures. The minimum quench energy, minimum propagation zone (MPZ) length are determined as a function of temperature and transport current. The change in MPZ size is investigated with measured temperature dependent E-J characteristics. The results add more detail to help understand the unique characteristics of increasing MPZ with transport current and lower temperatures.
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Young, E.
d3a881b0-a564-41f5-9843-34ae86da360f
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Min, H.
716c4f12-a860-491b-af53-d721aadd8584
9 November 2011
Young, E.
d3a881b0-a564-41f5-9843-34ae86da360f
Yang, Y.
4cac858a-e0c0-4174-a839-05ca394fc51f
Min, H.
716c4f12-a860-491b-af53-d721aadd8584
Young, E., Yang, Y. and Min, H.
(2011)
Quench characteristics of a Cu-Stabilized 2G HTS conductor.
IEEE Transactions on Applied Superconductivity, 21 (3), .
(doi:10.1109/TASC.2010.2083615).
Abstract
The prospect of medium/high field superconducting magnets using 2G HTS tapes is approaching to reality with continued enhancement in the performance of these conductors. Direct measurements of 1d adiabatic quench initiation and propagation of a Cu-stabilized 2G conductor have been carried out with spatial-temporal recording of temperature and voltage following the deposition of various local heat pulses to the conductor at different temperatures between 40K and 64K carrying different transport currents. It was found that the stabilizer-free 2G tape maintains the unique characteristics previously measured in non-stabilized tape of increasing MPZ with transport current and higher quench energy at lower temperatures. The minimum quench energy, minimum propagation zone (MPZ) length are determined as a function of temperature and transport current. The change in MPZ size is investigated with measured temperature dependent E-J characteristics. The results add more detail to help understand the unique characteristics of increasing MPZ with transport current and lower temperatures.
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EAYoung-1MX-08.pdf
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e-pub ahead of print date: June 2011
Published date: 9 November 2011
Organisations:
Thermofluids and Superconductivity, Engineering Science Unit
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Local EPrints ID: 163075
URI: http://eprints.soton.ac.uk/id/eprint/163075
ISSN: 1051-8223
PURE UUID: cbaaa5da-b00e-4569-817a-a8168f5d0fe7
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Date deposited: 03 Sep 2010 07:43
Last modified: 14 Mar 2024 02:37
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Author:
H. Min
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