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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 ºÚÁÏרÇø 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 .