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Report No.

Edge and pedestal characteristics

Urano, Hajime; Morisaki, Tomohiro*

JT-60SA is placed on the position for achieving two main objectives. One is a supporting ITER for burning plasma and the other is a complementing ITER for DEMO reactor. Although H-mode operation is a robust operating mode in present diverted tokamaks and is beneficial in improving the edge and core confinement, there are some uncertainties in projecting H-mode operation towards ITER and DEMO reactor. Key issues among these uncertainties are the power required to access and maintain H-mode, the height and width of the H-mode pedestal affecting the overall confinement and plasma performance, the characteristics of the ELMs, and the pedestal control for high beta long pulse operation.



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