Recent Results of JT-60U

Recent JT-60U experiments were concentrated on extending new operational regimes such as the negative-shear mode and high triangularity regime in addition to high β_p H-mode. The results are quite encouraging for steady-state operation which is necessary for ITER and future tokamak reactors such as SSTR. First neutral beam injection into a tokamak plasma using negative ion acceleration was successfully made. Design and fabrication of the W-shaped radiative pumped divertor is progressing on schedule and the design of the JT-60SU is making progress.