Title :
A conceptual design of a superconducting magnet for MAGLEV using a Bi-based high-Tc tape
Author :
Yokoyama, S. ; Shimohata, K. ; Inaguchi, T. ; Takeuchi, T. ; Kim, T. ; Nakamura, S. ; Miyashita, S. ; Uchikawa, F.
Author_Institution :
Central Res. Lab., Mitsubishi Electr. Corp., Hyogo, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
A conceptual design of a superconducting magnet for MAGLEV using a Bi-based high-Tc superconducting tape ((BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 8/-Ag) is studied. In this study, the structure of conductor and coil, AC loss, stability, current lead, persistent current switch, cryostat structure and cooling system are estimated. The characteristics of the design are as follows: (1) the superconducting coil is cooled by a refrigerator at 20 K and is operated by persistent mode; (2) the coil is constructed by 6 pieces of double pancake coils, and each pancake coil is graded by changing conductor size; (3) the temperature rise of the coil is about 2 K due to AC loss; and (4) the superconducting stability is very high.<>
Keywords :
bismuth compounds; cooling; losses; magnetic levitation; railways; stability; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 8/-Ag; (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 8/-Ag superconducting tape; 20 K; AC loss; MAGLEV; cooling system; cryostat structure; current lead; double pancake coils; high-Tc superconducting tape; persistent current switch; refrigerator; stability; superconducting coil; superconducting magnet; Conductors; Cooling; Magnetic levitation; Persistent currents; Stability; Strontium; Superconducting coils; Superconducting films; Superconducting magnets; Switches;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
