TY - JOUR
T1 - Normal transition and propagation characteristics of YBCO tape
AU - Ishiyama, Atsushi
AU - Yanai, Masahiro
AU - Morisaki, Toru
AU - Ueda, Hiroshi
AU - Shiohara, Yuh
AU - Izumi, Teruo
AU - Iijima, Yasuhiro
AU - Saitoh, Takashi
N1 - Funding Information:
Manuscript received October 4, 2004. This work was supported by NEDO as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. A. Ishiyama, M. Yanai, T. Morisaki, and H. Ueda are with the Department of Electrical Engineering and Bioscience, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan (e-mail: atsushi@waseda.jp). Y. Shiohara and T. Izumi are with the International Superconductivity Technology Center, Superconductivity Research Laboratory, Koto-ku, Tokyo 135-0062, Japan (e-mail: shiohara@istec.or.jp). Y. Iijima and T. Saitoh are with the Fujikura Ltd, Material Technology Laboratory, Koto-ku, Tokyo 135-8512, Japan (e-mail: ijm@rd.fujikura.co.jp). Digital Object Identifier 10.1109/TASC.2005.849225
PY - 2005/6
Y1 - 2005/6
N2 - YBCO tape is expected to be used in future HTS applications, because it has better Jc characteristic in high temperatures and in high applied magnetic fields. It is important to consider the stability in superconducting applications. To establish the stability criterion for coated conductors, the characteristics of the transition to the normal state and normal-zone propagation in YBCO sample tapes were examined experimentally and numerically. The YBCO sample tapes were produced by IBAD/PLD method. Measurements were performed as a function of both heat input and operating current for operating temperatures of 55 K, 60 K, and 65 K in a background magnetic field of 5 T. The experimental results were compared with a simulation using a newly developed computer program based on the finite element method (FEM). In the computer program, the I - V characteristics of the YBCO sample tapes were taken into account. The computer program could simulate the normal transition and propagation phenomena and its validity was confirmed. The influence of the thickness of a Ag-stabilizer on the transient thermal behavior of YBCO tapes was examined experimentally and numerically and the results were presented here.
AB - YBCO tape is expected to be used in future HTS applications, because it has better Jc characteristic in high temperatures and in high applied magnetic fields. It is important to consider the stability in superconducting applications. To establish the stability criterion for coated conductors, the characteristics of the transition to the normal state and normal-zone propagation in YBCO sample tapes were examined experimentally and numerically. The YBCO sample tapes were produced by IBAD/PLD method. Measurements were performed as a function of both heat input and operating current for operating temperatures of 55 K, 60 K, and 65 K in a background magnetic field of 5 T. The experimental results were compared with a simulation using a newly developed computer program based on the finite element method (FEM). In the computer program, the I - V characteristics of the YBCO sample tapes were taken into account. The computer program could simulate the normal transition and propagation phenomena and its validity was confirmed. The influence of the thickness of a Ag-stabilizer on the transient thermal behavior of YBCO tapes was examined experimentally and numerically and the results were presented here.
KW - Minimum quench energy
KW - Normal transition and propagation
KW - Thickness of Ag-stabilizer
KW - YBCO tape
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U2 - 10.1109/TASC.2005.849225
DO - 10.1109/TASC.2005.849225
M3 - Article
AN - SCOPUS:22044432044
SN - 1051-8223
VL - 15
SP - 1659
EP - 1662
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 PART II
ER -