Title :
Persistent current HTS magnet cooled by cryocooler (3)-HTS magnet characteristics
Author :
Tasaki, Kenji ; Tosaka, Taizo ; Marukawa, Kotaro ; Kuriyama, Toru ; Hanai, Satoshi ; Yamaji, Mutsuhiko ; Kuwano, Katsuyuki ; Igarashi, Motohiro ; Nemoto, Kaoru ; Hirano, Satoshi ; Okutomi, Takeshi ; Nakao, Hiroyuki ; Terai, Motoaki
Author_Institution :
Toshiba Corp., Yokohama, Japan
fDate :
6/1/2005 12:00:00 AM
Abstract :
We fabricated a persistent current HTS magnet wound with conductors composed of four Ag-sheathed Bi2223 wires and an insulated stainless-steel tape. The HTS magnet is composed of 12 racetrack formed single-pancake coils and impregnated with epoxy resin. The magnet is the same size as a magnet for a Maglev train. The stored energy of the magnet is 0.34 MJ and the central magnetic field is 1.3 T at the rated current operation of 532 A. Cooling the magnet to less than 20 K, I-V characteristics in persistent current operations and AC losses in charging and discharging the magnet were investigated.
Keywords :
bismuth compounds; calcium compounds; cryogenics; high-temperature superconductors; lead compounds; magnetic cooling; persistent currents; silver; stainless steel; strontium compounds; superconducting coils; superconducting magnets; 0.34 MJ; 1.3 T; 20 K; 532 A; AC losses; Bi2223 wires; Bi2PdSr2Ca2Cu3O10-Ag; HTS magnet characteristics; I-V characteristics; Maglev train; conduction-cooled HTS coil; cryocooler; epoxy resin; persistent current HTS magnet; persistent current operations; single-pancake coils; stainless-steel tape; Cable insulation; Coils; Conductors; Epoxy resins; High temperature superconductors; Magnetic fields; Magnetic levitation; Persistent currents; Wires; Wounds; Bi2223 wires; Maglev; conduction-cooled HTS coil; persistent current operation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2005.849633
