Superconducting tokamak JT-60SA project for ITER and DEMO researches

Hosogane, Nobuyuki; JT-60SA Design Team; JA-EU Satellite Tokamak Working Group

JT-60SA is a superconducting tokamak with wide flexibility in plasma shape and single/double null divertors, capable of confining break-even class high temperature plasma for 100 s with intensive heating power of 41 MW. The design of JT-60SA is based on the National Centralized Tokamak NCT, and has been proposed as an ITER satellite tokamak in the 10 years Broader Approach (BA) program between Japan and Europe. The JT-60SA project is a combination of the BA project and the NCT project. The former mission is to support ITER by developing an understanding of physics issues, optimizing operation scenarios etc.. The latter mission is mainly to explore steady state, high beta DEMO relevant scenarios. The construction period is 7 years and 3 years will be devoted to experimental studies with a possibility of extension. The detail design of JT-60SA is progressing under their collaboration. Overview of the project and machine design is presented.