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P: Fachverband Plasmaphysik
P 17: Poster II
P 17.31: Poster
Freitag, 3. September 2021, 14:00–16:00, P
Steps for implementation of divertor protection algorithms at Wendelstein 7-X — •Manuel Agredano-Torres1, Simon Fischer1, Heike Laqua1, Aleix Puig Sitjes1, Hans-Stephan Bosch1, Wolfgang Treutterer2, Axel Winter1, and Wendelstein 7-X Team1 — 1Max-Planck-Institute for Plasma Physics, Wendelsteinstr. 1, 17491 Greifswald, Germany — 2Max-Planck-Institute for Plasma Physics, Boltzmannstr. 2, 85748 Garching, Germany
Wendelstein 7-X (W7-X) is the world's largest stellarator experiment and aims to proof the viability of stellarator devices as power plants. It is being upgraded including the installation of actively cooled divertors. In order to avoid damage in the divertors, their temperatures have to be kept below their maximum limit and a protection system, as part of W7-X control system, is required to ensure it. The divertors protection is based on the data obtained from thermography diagnostics. Fast Control Stations process the data in real-time to determine the risk of surpassing a temperature limit. In the next operational campaign, if the risk reaches a determined threshold, an alarm is triggered so the Safety System can act on time and stop the operation of the device. The final goal of the protection system is to allow a continuous operation W7-X, avoiding the overheating of the divertors by feedback control of heating systems and control coils. This contribution presents the overall system required for the divertors protection including relevant diagnostics and W-7X control system, an overview of the protection algorithms and the planning for their real-time implementation in the control system before the next operational campaign.