Pre-industrial PIT conductor and coil development at Alcatel

In 1995 the PIT conductor development was strengthened at Alcatel and impor tant progress has been achieved since. During 1997 the patented rectangular Alcatel route was upscaled and pre-industrial conductors have been fabrica ted in a wire drawing mill. After the successful transfer the first high pe rformance conductors have been realized in kilometer lengths. The conductor s are realized in cooperation with Aventis Research & Technologies using pr ecursor powders optimized for the Alcatel conductor route. The simpler Bi-2 212/AgPd matrix conductor is used as a working horse where engineering curr ent densities of J(e) = 65 kA/cm(2) have been reached at 4 K, 0 T. Signific ant progress has also been achieved on Bi-2223 conductors where critical cu rrent densities of J(C) = 30 KA/cm(2) at 77 K, 0 T are reached. First solen oids generating a field up to 2.3 Tesla have been realized using Bi-2212 co nductors. In a background field of 3 Tesla this magnet still generates a fi eld of 2 Tesla. The results on test coils are consistent with J(c)(H) measu rements on short samples showing that an important step towards high homoge neity conductors has been achieved.