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 h igh density and radiative plasma by neon seeding. Effective helium exhaust is demonstrated for helium-beam-injected plasmas. Results of high-confineme nt experiments are also shown. Strongly heated ELMy H-mode plasmas are sust ained during 9 s without increasing the impurity contamination. High Q(DT)( eq) similar to 1 is obtained in the low I-p regime of the reversed shear pl asmas. Progress in the negative-ion-based neutral beam injection experiment s is finally introduced.