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The ASDEX Upgrade at the Max-Planck Institute for Plasma Physics (IPP) in Garching, Germany, is one of three medium-sized tokamaks which are part of the EUROfusion program. In conjunction with JET it provides important input to the ITER Project.
The 18th issue of the ASDEX Upgrade Letter provides the latest news in three topics. The first presents results of research on plasma stability, in particular on instabilities in the plasma edge. The second item describes the use of a newly upgraded core turbulence microwave diagnostic system, known as correlation electron cyclotron emission (CECE). Thanks to the CECE, plasma physicists will have a better understanding of turbulence in fusion plasmas.
A third contribution focuses on alternative power exhaust concepts for the APDEX Upgrade tokamak. The extraction of the power produced in a future reactor poses one of the challenges in fusion research. In the ASDEX Upgrade the lower divertor is normally used for this purpose; now, scientists are investigating alternative configurations with a new, modified upper divertor. The design phase has already started and first hardware installation is expected in 2020/2021.
The Letter also honours the young IPP physicist Benedikt Geiger who was awarded the Hans Werner Osthoff Plasma Physics Prize 2016. The prize honours outstanding achievements in the field of plasma physics.
For more information and access to the ASDEX Upgrade Letter click 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.