English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Exhausting power from the hot fusion core to the plasma-facing components isone of the biggest challenges in fusion energy. The MAST Upgrade tokamakuniquely integrates strong containment of neutrals within the exhaust area(divertor) with extreme divertor shaping capability. By systematically alteringthe divertor shape, this study shows the strongest evidence to date thatlong-legged divertors with a high magnetic field gradient (total fluxexpansion) deliver key power exhaust benefits without adversely impacting thehot fusion core. These benefits are already achieved with relatively modestgeometry adjustments that are more feasible to integrate in reactor designs.Benefits include reduced target heat loads and improved access to, andstability of, a neutral gas buffer that 'shields' the target and enhances powerexhaust (detachment). Analysis and model comparisons shows these benefits areobtained by combining multiple shaping aspects: long-legged divertors haveexpanded plasma-neutral interaction volume that drive reductions in particleand power loads, while total flux expansion enhances detachment access andstability. Containing the neutrals in the exhaust area with physical structuresfurther augments these shaping benefits. These results demonstrate strategicvariation in the divertor geometry and magnetic topology is a potentialsolution to one of fusion's biggest challenges: power exhaust.

Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challenge