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Thanks to a newly-installed actively-cooled exhaust, the German stellarator Wendelstein 7-X at IPP Greifswald will be able to maintain its fusion plasma for up to 30 minutes—a fusion milestone.
On Friday 18 June 2021, the last of a total of 60 divertor modules was installed in the Wendelstein 7-X plasma vessel. With this, an extremely important technical milestone was reached and, after 20 months of assembly time, all actively-cooled divertor target modules have now been successfully integrated.
The current engineering shutdown will continue throughout the year so that a new and improved W7-X can restart its fusion experiments in 2022. According to the current plan, the assembly of the remaining vessel installations, including rework, can be completed by 9 December 2021.
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 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 °ÄÃÅÁùºÏ²Ê¸ßÊÖ, 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 in English on the KFE website, or in Korean in the .