What question did this study set out to answer?

To establish the physics basis for coupling a high-performance, magnetohydrodynamically stable hybrid plasma core with a low heat flux, radiating divertor for steady-state reactor operations.

February 13, 2023Nuclear FusionOpen Access

The physics basis to integrate an MHD stable, high-power hybrid scenario to a cool divertor for steady-state reactor operation

View Full Paper

Ask AI

Bookmark

To establish the physics basis for coupling a high-performance, magnetohydrodynamically stable hybrid plasma core with a low heat flux, radiating divertor for steady-state reactor operations.
Conducted experiments on the DIII-D tokamak extending the steady-state hybrid scenario to elevated density alongside neon and argon impurity seeding to establish a radiating mantle.
Modeled edge peeling-ballooning stability with the ELITE code and calculated fast-ion transport driven by toroidicity-induced Alfvén eigenmodes.
Evaluated core tearing mode onset via the Belt model and projected the integrated core-divertor regime to reactor designs including ITER, ARC, and ARIES-ACT1.
Achieved optimized plasma discharges maintaining an energy confinement factor of H98y2 = 1.7, a Greenwald density fraction of fGW = 0.7, and approximately 85% mantle radiation.
Determined that divertor heat load reduction via argon and neon seeding triggers core n = 1, 2, and 3 tearing modes, with the resulting confinement loss driven by mode overlap rather than core impurity radiation.
Demonstrated that off-axis electron cyclotron power and increased density recover plasma pressure by improving local confinement and suppressing fast-ion diffusion.

Discussion

No takes yet. Share an insight, caveat, or question.

Implication

Experimental and modeling analysis demonstrates stable core-divertor integration in tokamak plasmas, indicating a viable pathway for steady-state fusion reactors.

Cite This Study

Turco et al. (2023) studied this question.

synapsesocial.com/papers/6a6f7f7175498292b708e1e5 https://doi.org/10.1088/1741-4326/acb370

View Full Paper

Ask AI

Bookmark

Implication

Experimental and modeling analysis demonstrates stable core-divertor integration in tokamak plasmas, indicating a viable pathway for steady-state fusion reactors.

The physics basis to integrate an MHD stable, high-power hybrid scenario to a cool divertor for steady-state reactor operation

Key Points

Discussion

Implication

Cite This Study

The physics basis to integrate an MHD stable, high-power hybrid scenario to a cool divertor for steady-state reactor operation

Key Points

Discussion

Implication

Cite This Study

Keep reading

Keep reading