The Large Helical Device (LHD) is a plasma physics experimental device havi
ng two superconducting helical coils and three pairs of poloidal coils. All
assembly and attachment works of LHD were completed in January 1998. The t
rial operation and the first plasma ignition of the eight-year Phase I proj
ect for LHD were finished in March just as planned. After that time the fir
st cycle plasma experiment was carried on at a plasma central field of 1.5
T. The second cycle experiment is now conducted. The LHD magnets will be ex
cited to a central field of 3.0 T in December 1998.