Recent Progress in JT-60U Experiments with W-Shaped Divertor

Recent experimental results of power and particle control in JT-60U with W-shaped pumped divertor are presented. Backflow of carbon impurities towards x point is decreased by the dome as well as by the gas puff from the main plasma. Heat load on divertor plates is reduced by the detached plasma at high density and radiative plasma by neon seeding. Effective helium exhaust is demonstrated for helium-beam-injected plasmas. Results of high-confinement experiments are also shown. Strongly heated ELMy H-mode plasmas are sustained during 9 s without increasing the impurity contamination. High Q_DT^eq ~ 1 is obtained in the low I_p regime of the reversed shear plasmas. Progress in the negative-ion-based neutral beam injection experiments is finally introduced