Recent progress of high performance Ag-sheathed Bi2223 wire

Abstract Recently, we have updated the highest J c and I c at 77 K, self-field, for our R&D short length tapes and I c  ×  L at 77 K, self-field, for our kilometer-length manufacturing product. For our short length R&D tapes, we have updated the I c to 236 A. The highest J c has reached 663 A/mm 2 . Furthermore, we have broken our own world record performance of I c  ×  L with the production of a 4.2 mm wide, 2084 m long Bi wire that carries an average current of 176 A. This has resulted in a new record—high wire performance of 367 k Am.