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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.
The new 360-degree panorama featured on the internet pages of Max Planck Institute for Plasma Physics (IPP) leads right into the plasma vessel of the Wendelstein 7-X fusion research device at Greifswald.
The address www. ipp.mpg.de/panoramaw7x takes observers on an extraordinary tour to the core of the device, otherwise accessible only to experts; they can stroll through the experimentation hall and view the facilities that heat the plasma to many millions of degrees.
Last but not least, a new theory ansatz for calculating magnetic equilibria, first developed at Princeton, led to a very fast computer code. With the new algorithm, equilibrium calculations for the complex magnetic fields of future stellarator fusion devices no longer take months, but just a few minutes.