TY - JOUR
T1 - Mechanical and electrical characteristics of a reinforced Bi2Sr2CaCu2O8 tape coil in large hoop stress
AU - Watanabe, K.
AU - Awaji, S.
AU - Okada, M.
AU - Motokawa, M.
N1 - Funding Information:
This work is partially supported by the Research Grant Committee of the University of Hong Kong. We thank an anonymous referee and J. Katz for their very useful comments and suggestions.
PY - 1998/10
Y1 - 1998/10
N2 - We fabricated a strengthened silver-sheathed multifilamentary Bi2Sr2CaCu2O8 tape coil with parallel co-winding Ag-0.5wt%Mg tape between turns and an additional Cu-50wt%Ag tape on the outer coil surface. The reinforced double-pancake coil with a wide bore 280 mm in diameter was investigated in a large hoop stress state up to 240 MPa at an external magnetic field of 10 T and 4.2 K. It is found that good transport properties without degradation for the test coil are revealed under a successfully reduced strain of less than 0.2% at 240 MPa. Moreover, it is pointed out that thermal stability for the silver-sheathed Bi2Sr2CaCu2O8 tape is closely related to the current sharing characteristics as a result of cryogenic stabilization with heat transfer from the metal surface to liquid helium.
AB - We fabricated a strengthened silver-sheathed multifilamentary Bi2Sr2CaCu2O8 tape coil with parallel co-winding Ag-0.5wt%Mg tape between turns and an additional Cu-50wt%Ag tape on the outer coil surface. The reinforced double-pancake coil with a wide bore 280 mm in diameter was investigated in a large hoop stress state up to 240 MPa at an external magnetic field of 10 T and 4.2 K. It is found that good transport properties without degradation for the test coil are revealed under a successfully reduced strain of less than 0.2% at 240 MPa. Moreover, it is pointed out that thermal stability for the silver-sheathed Bi2Sr2CaCu2O8 tape is closely related to the current sharing characteristics as a result of cryogenic stabilization with heat transfer from the metal surface to liquid helium.
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U2 - 10.1088/0953-2048/11/10/018
DO - 10.1088/0953-2048/11/10/018
M3 - Article
AN - SCOPUS:0342764647
SN - 0953-2048
VL - 11
SP - 986
EP - 988
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
IS - 10
ER -