The set of diagnostics for the first operation campaign of the Wendelstein 7-X stellarator

R. König, J. Baldzuhn, W. Biel, C. Biedermann, H.S. Bosch, S. Bozhenkov, T. Braeuer, B. Brotas de Carvalho, R. Burhenn, B. Buttenschoen, G. Cseh, A. Czarnecka, M. Endler, V. Erckmann, T. Estrada, J. Geiger, O. Grulke, D. Hartmann, D. Hathiramani, M. HirschS. Jabl Onski, M. Jakubowski, J. Kaczmarczyk, T. Klinger, S. Klose, G. Kocsis, P. Kornejew, A. Kraemer-Flecken, T. Kremeyer, M. Krychowiak, M. Kubkowska, A. Langenberg, H.P. Laqua, M. Laux, Y. Liang, A. Lorenz, A.O. Marchuk, V. Moncada, O. Neubauer, U. Neuner, J.W. Oosterbeek, M. Otte, N. Pablant, E. Pasch, T.S. Pedersen, K. Rahbarnia, L. Ryc, O. Schmitz, W. Schneider, H. Schuhmacher, B. Schweer, T. Stange, H. Thomsen, J.-M. Travere, T. Szepesi, U. Wenzel, A. Werner, B. Wiegel, T. Windisch, R. Wolf, G.A. Wurden, D. Zhang, A. Zimbal, S. Zoletnik

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Wendelstein 7-X (W7-X) is a large optimized stellarator (B=2.5T, V=30m3) aiming at demonstrating the reactor relevance of the optimized stellarators. In 2015 W7-X will begin its first operation phase (OP1.1) with five inertially cooled inboard limiters made of graphite. Assuming the heat loads can be spread out evenly between the limiters, 1 second discharges at 2 MW of ECRH heating power could be run in OP1.1. The expected plasma parameters will be sufficient to demonstrate the readiness of the installed diagnostics and even to run a first physics program. The diagnostics available for this first operation phase, including some special limiter diagnostics, and their capabilities are being presented.
Original languageEnglish
Article numberP10002
Pages (from-to)1-17
JournalJournal of Instrumentation
Publication statusPublished - Oct 2015


  • Plasma diagnostics - probes
  • Nuclear instruments and methods for hot plasma diagnostics
  • Plasma diagnostics - interferometry, spectroscopy and imaging


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