Use stronger shaping, EC and helicon off-axis CD, and core-edge integration to increase duration at betaN~4
2024 Research Campaign, Task Force: Integrated high beta-p Scenario
Purpose of Experiment
The proposed experiment aims to extend the high 𝛽𝑃 advanced tokamak scenario discharges to a fully non-inductive state using both stronger plasma shaping and additional off-axis current drive sources. The experiment will build on one of the high-performance shots from past high-𝛽𝑃 campaigns.
Experimental Approach
With the installation of the new stage 1 divertor, higher triangularity and larger volume plasmas are possible, which should improve MHD stability. Electron cyclotron and helicon off-axis current drive will be used to reach and sustain a fully non-inductive state for long time scales. In parallel, impurity gas puffing in the edge will be explored to trigger full plasma detachment, addressing the core-edge integration problem.
See more details, including project leads, at U.S. Department of Energy, Office of Scientific and Technical Information (OSTI).