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On August 28, two upper port extensions procured by the Russian Domestic Agency arrived at the South Korean port of Busan.
Each of the vacuum vessel's 44 openings will have custom-made "extensions" to create the junction to the surrounding cryostat. The first link in the two-part chain—the port stub extension—will be welded to the vacuum vessel sectors before they are shipped from their manufacturing locations; (the second, port extensions, will be added during assembly on site).
Responsible for the 18 upper ports, the Russian Domestic Agency has been delivering upper port stub extensions to vacuum vessel manufacturers in Korea and Europe since 2017. They are procured under the general contracting responsibility of JSC NIIEFA (part of Rosatom State Corporation), and manufactured by MAN Energy Solutions, Germany.
Upper port extensions #14 and #16 were delivered to Korea late August after a one-month sea voyage. The timely delivery of all port stub extensions is critical for the on-time fabrication of vacuum vessel sectors, and thus the overall ITER schedule.
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.