Overview of diagnostic performance and results for the first operation phase in Wendelstein 7-X (invited)

Krychowiak, M.; Brotas de Carvalho, B.; Hartmann, D.; Bosch, H. S.; Cappa, A.; Moncada, V.; Brakel, R.; Bozhenkov, S.; Geiger, J.; Szabolics, T.; König, R.; Klose, S.; Niemann, H.; Knauer, J.; Kornejew, P.; Pisano, F.; Kremeyer, T.; Zoletnik, S.; Kaczmarczyk, J.; Klinger, T.; Beurskens, M.; Schmitz, O.; Hathiramani, D.; Standley, B.; Thomsen, H.; Harris, J. H.; Czarnecka, A.; Naujoks, D.; Wenzel, U.; Laqua, H. P.; Erckmann, V.; Schröder, T.; Werner, A.; Wiegel, B.; Krawczyk, N.; Neilson, H.; Schuhmacher, H.; Jabłoński, S.; Liu, S. C.; Krämer-Flecken, A.; Wurden, G. A.; Liang, Yunfeng; Buttenschön, B.; Blackwell, B. D.; Baldzuhn, J.; Kubkowska, M.; Kocsis, G.; Drews, Philipp; Bräuer, T.; Sunn Pedersen, T.; Grulke, O.; Lorenz, A.; Ryć, L.; Travere, J.-M.; Rahbarnia, K.; Neuner, U.; Frerichs, H.; Schneider, W.; Zhang, D.; Endler, M.; Pasch, E.; Weir, G. M.; Hartfuß, H. J.; Dinklage, A.; Estrada, T.; Svensson, J.; Fuchert, G.; Lazerson, S.; Stange, T.; Alonso, A.; Stephey, L.; Otte, M.; Marchuk, A. O.; Trimino Mora, H.; Windisch, T.; Cseh, G.; Dzikowicka, A.; Szepesi, T.; Tsuchiya, H.; Marsen, S.; Schweer, B.; Pablant, N.; Fornal, T.; Książek, I.; Effenberg, F.; Andreeva, T.; Hirsch, M.; Neubauer, O.; Schmuck, S.; Ford, O.; Wolf, R.; Burhenn, R.; Adnan, A.; Biel, W.; Höfel, U.; Jakubowski, M. W.; Langenberg, A.; Oosterbeek, J. W.; Barbui, T.; Zimbal, A.; Biedermann, C.; Laux, M.

doi:10.1063/1.4964376

Journal Article

FZJ-2017-01500

Overview of diagnostic performance and results for the first operation phase in Wendelstein 7-X (invited)

Krychowiak, M. ; Adnan, A. ; Alonso, A. ; Andreeva, T. ; Baldzuhn, J. ; Barbui, T. ; Beurskens, M. ; Biel, W. (Corresponding author)FZJ* ; Biedermann, C. ; Blackwell, B. D. ; Bosch, H. S. ; Bozhenkov, S. ; Brakel, R. ; Bräuer, T. ; Brotas de Carvalho, B. ; Burhenn, R. ; Buttenschön, B. ; Cseh, G. ; Cappa, A. ; Czarnecka, A. ; Dinklage, A. ; Drews, P.FZJ* ; Dzikowicka, A. ; Effenberg, F. ; Endler, M. ; Erckmann, V. ; Estrada, T. ; Ford, O. ; Fornal, T. ; Frerichs, H. ; Fuchert, G. ; Geiger, J. ; Grulke, O. ; Harris, J. H. ; Hartfuß, H. J. ; Hartmann, D. ; Hathiramani, D. ; Hirsch, M. ; Höfel, U. ; Jabłoński, S. ; Jakubowski, M. W. ; Kaczmarczyk, J. ; Klinger, T. ; Klose, S. ; Knauer, J. ; Kocsis, G. ; König, R.FZJ* ; Kornejew, P. ; Krämer-Flecken, A.FZJ* ; Krawczyk, N. ; Kremeyer, T. ; Książek, I. ; Kubkowska, M. ; Langenberg, A. ; Laqua, H. P. ; Laux, M. ; Lazerson, S. ; Liang, Y.FZJ* ; Liu, S. C. ; Lorenz, A. ; Marchuk, A. O. ; Marsen, S. ; Moncada, V. ; Naujoks, D. ; Neilson, H. ; Neubauer, O.FZJ* ; Neuner, U. ; Niemann, H. ; Oosterbeek, J. W. ; Otte, M. ; Pablant, N. ; Pasch, E. ; Sunn Pedersen, T. ; Pisano, F. ; Rahbarnia, K. ; Ryć, L. ; Schmitz, O.FZJ* ; Schmuck, S. ; Schneider, W. ; Schröder, T.FZJ* ; Schuhmacher, H. ; Schweer, B.FZJ* ; Standley, B. ; Stange, T. ; Stephey, L. ; Svensson, J. ; Szabolics, T. ; Szepesi, T. ; Thomsen, H. ; Travere, J.-M. ; Trimino Mora, H. ; Tsuchiya, H. ; Weir, G. M. ; Wenzel, U. ; Werner, A. ; Wiegel, B. ; Windisch, T. ; Wolf, R. ; Wurden, G. A. ; Zhang, D. ; Zimbal, A. ; Zoletnik, S.

2016
American Institute of Physics [S.l.]

Review of scientific instruments 87(11), 11D304 - (2016) [10.1063/1.4964376]

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Please use a persistent id in citations: http://hdl.handle.net/2128/16715 doi:10.1063/1.4964376

Abstract: Wendelstein 7-X, a superconducting optimized stellarator built in Greifswald/Germany, started its first plasmas with the last closed flux surface (LCFS) defined by 5 uncooled graphite limiters in December 2015. At the end of the 10 weeks long experimental campaign (OP1.1) more than 20 independent diagnostic systems were in operation, allowing detailed studies of many interesting plasma phenomena. For example, fast neutral gas manometers supported by video cameras (including one fast-frame camera with frame rates of tens of kHz) as well as visible cameras with different interference filters, with field of views covering all ten half-modules of the stellarator, discovered a MARFE-like radiation zone on the inboard side of machine module 4. This structure is presumably triggered by an inadvertent plasma-wall interaction in module 4 resulting in a high impurity influx that terminates some discharges by radiation cooling. The main plasma parameters achieved in OP1.1 exceeded predicted values in discharges of a length reaching 6 s. Although OP1.1 is characterized by short pulses, many of the diagnostics are already designed for quasi-steady state operation of 30 min discharges heated at 10 MW of ECRH. An overview of diagnostic performance for OP1.1 is given, including some highlights from the physics campaigns.

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ddc:530

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Plasmaphysik (IEK-4)

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Appears in the scientific report 2016

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; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz

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Record created 2017-02-03, last modified 2024-07-11

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