Studies of Plasma Exhaust Scenario and Divertor Design for JA DEMO

The power exhaust scenario for the feasible DEMO plasmas and the appropriate divertor design have been studied with a high priority in the steady-state Japan (JA) DEMO with the fusion power of 1.5 GW-level and the major radius of 8 m-class. At the same time, concept of the heat removal components based on the ITER technology, arrangement of the coolant routing, and the cassette body were integrated for the divertor design.