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Five years of construction work to upgrade the spherical tokamak MAST (UK) have been brought to a close and experiments are set to begin early next year.
MAST Upgrade will contribute to the knowledge base for ITER by helping to resolve key plasma physics issues. It will be the first tokamak to trial the Super-X divertor—a novel way to exhaust heat loads from large fusion reactors, which spreads the power loads in the divertor area of the machine. Other features of the upgrade include an increase in the pulse length by a factor approaching ten, additional heating power, and better control and pumping capabilities to contain the resulting higher temperature, longer-pulse plasmas.
A ceremony was held on 18 October at the UK's Culham Centre for Fusion Energy (CCFE). See the full report here.
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the…
KSTAR aims for longer plasmas
At the Korea Institute of Fusion Energy (KFE), the KSTAR tokamak recommenced operations in December after a major upgrade to replace the device's carbon divertor with a tungsten divertor.
According to an article on the KFE website, the original carbon divertors could take a thermal load of 5MW/m², whereas the tungsten divertor can take 10MW/m². The upgrade is critical to the goal of sustaining a 100-million-degree plasma for 300 seconds by 2026. Data from the operational campaign will be directly relevant to ITER, which will operate a tungsten divertor under similar plasma conditions in terms of shape and structure.
This testing campaign will continue through February 2024. Read more about the plans in this article in English on the KFE website, or in Korean in the Chosun Biz.