Abstract

The Large Helical Device (LHD) under construction at the NIFS is a plasma physics experimental device consisting of two helical coils wound from aluminum-stabilized composite superconductors, three pairs of poloidal coils wound from cable-in-conduit conductors, a cryostat, and a plasma vacuum vessel. The design concepts of the helical and poloidal coils are especially described. Successful IV-L coil tests showed the validity of the poloidal coils. The LHD superconducting coils, cryostat, and plasma vacuum vessel will be assembled at the end of 1997, and trial tests will be carried out in March 1998.

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