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The plasma experiments in the Wendelstein 7-X fusion device at Max Planck Institute for Plasma Physics (IPP) in Greifswald have now been resumed after a 15-month conversion break. The extension has made the device fit for higher heating power and longer pulses. This now allows experiments in which the optimised concept of Wendelstein 7-X can be tested. Wendelstein 7-X, the world’s largest fusion device of the stellarator type, is to investigate this type’s suitability for application in a power plant.
Besides new heating and measuring facilities, over 8,000 graphite wall tiles and ten divertor modules have been installed in the plasma vessel since March last year... This cladding is to protect the vessel walls and allow higher temperatures and plasma discharges lasting 10 seconds in forthcoming experiments.