Status and Plans for JT-60U

The present status and the experimental results of the initial phase of JT-60U up to the February 1992 are summarized. After the completion of the major modification in March 1991, total of more than three months of shut down work has been done to install four tangential neutral beams. Along with the present main target to conduct an effective conditioning of machine and heating systems in order to get the highest performance of JT-60U, a number of new findings are being studied in areas of plasma control, divertor, LH current drive, etc. Future plans of new 500 keV negative-ion beam system and a proposal of further modification are also described.