Numerical analysis of AC losses in YBCO coated conductor in external magnetic field

2004 ◽  
Vol 412-414 ◽  
pp. 1015-1020 ◽  
Author(s):  
Y. Ichiki ◽  
H. Ohsaki
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
External Magnetic Field ◽  
Ac Losses ◽  
Coated Conductor ◽  
Ybco Coated Conductor

AC losses of Ag-(Bi,Pb)SrCaCuO-2223 tapes in combination of transverse external magnetic field and transport current

1995 ◽  
Vol 5 (2) ◽  
pp. 709-712 ◽  
Author(s):  
M. Ciszek ◽  
B.A. Glowacki ◽  
S.P. Ashworth ◽  
A.M. Campbell ◽  
J.E. Evetts
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Transport Current ◽  
Ac Losses

Influence of External Magnetic Field on AC Losses at EF Coil Joints of JT-60SA

2012 ◽  
Vol 22 (3) ◽  
pp. 4704604-4704604 ◽  
Author(s):  
T. Takao ◽  
K. Nakamura ◽  
T. Takagi ◽  
N. Tanoue ◽  
H. Murakami ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Ac Losses

Thermal Conductivity Test of YBCO Coated Conductor Tape Stacks Interleaved With Insulated Stainless Steel Tapes

2012 ◽  
Vol 23 (3) ◽  
pp. 4600204-4600204 ◽  
Author(s):  
Hongyu Bai ◽  
W Markiewicz ◽  
Jun Lu ◽  
Hubertus Weijers
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Radial Direction ◽  
Sol Gel ◽  
Background Field ◽  
Ac Losses ◽  
Coated Conductor ◽  
Internal Cooling ◽  
Ybco Coated Conductor ◽  
Quench Propagation

A 32 Tesla, all-superconducting user magnet, which consists of two high temperature superconductor YBCO inner coils producing a field of 17 T in an low temperature superconductor Nb3Sn and NbTi outer magnet producing a background field of 15 T, is being developed at the National High Magnetic Field Laboratory. The YBCO inner coils are pancake-wound with YBCO coated conductor tapes with an interleaved insulation of sol-gel coated stainless steel tapes. The coils are to be cooled directly in liquid helium bath. Heat losses in the windings, such as ac losses during ramping and heat loss in the internal joints, are supposed to be transferred to the coil external surfaces through heat conduction. Thus, thermal conductivity of the coil structure is critical for the internal cooling of the coil and also quench propagation if any. Thermal conductivity measurements were carried out in the radial direction on stacks of alternating YBCO tapes and stainless steel tapes. This paper presents the test results that showed a very low thermal conductivity in the radial direction. For comparison purposes, calculated thermal conductivities in the axial and azimuthal direction are also presented.

scholarly journals Measurement of AC Losses in a Racetrack Superconducting Coil Made from YBCO Coated Conductor

2012 ◽  
Vol 36 ◽  
pp. 980-984 ◽  
Author(s):  
Eugen Seiler ◽  
Asger B. Abrahamsen ◽  
Ján Kováč ◽  
Mike Wichmann ◽  
Chresten Træholt
Keyword(s):  
Ac Losses ◽  
Coated Conductor ◽  
Ybco Coated Conductor ◽  
Superconducting Coil
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