HTS: A High Field Superconductor
Expected performance of all Nb3Sn or all HTS magnets at 4.2 K for the same amount of superconductor:
Year 2000 data for Jc at 12 T, 4.2 K
Nb3Sn: 2200 A/mm2
BSCCO-2212: 2000 A/mm2
Near future assumptions for Jc at 12 T, 4.2 K
Nb3Sn: 3000 A/mm2 (DOE Goal)
BSCCO-2212: 4000 A/mm2 (2X today)
BSCCO: 3:1 (all cases)
Nb3Sn: 1:1 or Jcu=1500 A/mm2
(~100 meter or longer lengths)
Investment in 2212 has been much less than in 2223, there may be room for relatively more improvement.
These are quench fields, operating fields may be 10% or more lower.