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@ARTICLE{Klinger:864232,
author = {Klinger, T. and Andreeva, T. and Bozhenkov, S. and Brandt,
C. and Burhenn, R. and Buttenschön, B. and Fuchert, G. and
Geiger, B. and Grulke, O. and Laqua, H. P. and Pablant, N.
and Rahbarnia, K. and Stange, T. and von Stechow, A. and
Tamura, N. and Thomsen, H. and Turkin, Y. and Wegner, T. and
Abramovic, I. and Äkäslompolo, S. and Alcuson, J. and
Aleynikov, P. and Aleynikova, K. and Ali, A. and Alonso, A.
and Anda, G. and Ascasibar, E. and Bähner, J. P. and Baek,
S. G. and Balden, M. and Baldzuhn, J. and Banduch, M. and
Barbui, T. and Behr, W. and Beidler, C. and Benndorf, A. and
Biedermann, C. and Biel, W. and Blackwell, B. and Blanco, E.
and Blatzheim, M. and Ballinger, S. and Bluhm, T. and
Böckenhoff, D. and Böswirth, B. and Böttger, L.-G. and
Borchardt, M. and Borsuk, V. and Boscary, J. and Bosch,
H.-S. and Beurskens, M. and Brakel, R. and Brand, H. and
Bräuer, T. and Braune, H. and Brezinsek, S. and Brunner,
K.-J. and Bussiahn, R. and Bykov, V. and Cai, J. and Calvo,
I. and Cannas, B. and Cappa, A. and Carls, A. and Carralero,
D. and Carraro, L. and Carvalho, B. and Castejon, F. and
Charl, A. and Chaudhary, N. and Chauvin, D. and Chernyshev,
F. and Cianciosa, M. and Citarella, R. and Claps, G. and
Coenen, Jan Willem and Cole, M. and Cole, M. J. and
Cordella, F. and Cseh, G. and Czarnecka, A. and Czerski, K.
and Czerwinski, M. and Czymek, G. and da Molin, A. and da
Silva, A. and Damm, H. and de la Pena, A. and Degenkolbe, S.
and Dhard, C. P. and Dibon, M. and Dinklage, A. and Dittmar,
T. and Drevlak, M. and Drewelow, P. and Drews, P. and
Durodie, F. and Edlund, E. and van Eeten, P. and Effenberg,
F. and Ehrke, G. and Elgeti, S. and Endler, M. and Ennis, D.
and Esteban, H. and Estrada, T. and Fellinger, J. and Feng,
Y. and Flom, E. and Fernandes, H. and Fietz, W. H. and
Figacz, W. and Fontdecaba, J. and Ford, O. and Fornal, T.
and Frerichs, H. and Freund, A. and Funaba, T. and
Galkowski, A. and Gantenbein, G. and Gao, Y. and García
Regaña, J. and Gates, D. and Geiger, J. and Giannella, V.
and Gogoleva, A. and Goncalves, B. and Goriaev, A. and
Gradic, D. and Grahl, M. and Green, J. and Greuner, H. and
Grosman, A. and Grote, H. and Gruca, M. and Guerard, C. and
Hacker, P. and Han, X. and Harris, J. H. and Hartmann, D.
and Hathiramani, D. and Hein, B. and Heinemann, B. and
Helander, P. and Henneberg, S. and Henkel, M. and Hernandez
Sanchez, J. and Hidalgo, C. and Hirsch, M. and Hollfeld, K.
P. and Höfel, U. and Hölting, A. and Höschen, D. and
Houry, M. and Howard, J. and Huang, X. and Huang, Z. and
Hubeny, M. and Huber, M. and Hunger, H. and Ida, K. and
Ilkei, T. and Illy, S. and Israeli, B. and Jablonski, S. and
Jakubowski, M. and Jelonnek, J. and Jenzsch, H. and Jesche,
T. and Jia, M. and Junghanns, P. and Kacmarczyk, J. and
Kallmeyer, J.-P. and Kamionka, U. and Kasahara, H. and
Kasparek, W. and Kazakov, Y. O. and Kenmochi, N. and Killer,
C. and Kirschner, A. and Kleiber, R. and Knauer, J. and
Knaup, M. and Knieps, A. and Kobarg, T. and Kocsis, G. and
Köchl, F. and Kolesnichenko, Y. and Könies, A. and König,
R. and Kornejew, P. and Koschinsky, J.-P. and Köster, F.
and Krämer, M. and Krampitz, R. and Krämer-Flecken, A. and
Krawczyk, N. and Kremeyer, T. and Krom, J. and Krychowiak,
M. and Ksiazek, I. and Kubkowska, M. and Kühner, G. and
Kurki-Suonio, T. and Kurz, P. A. and Kwak, S. and Landreman,
M. and Lang, P. and Lang, R. and Langenberg, A. and Langish,
S. and Laqua, H. and Laube, R. and Lazerson, S. and Lechte,
C. and Lennartz, M. and Leonhardt, W. and Li, C. and Li, C.
and Li, Y. and Liang, Y. and Linsmeier, C. and Liu, S. and
Lobsien, J.-F. and Loesser, D. and Loizu Cisquella, J. and
Lore, J. and Lorenz, A. and Losert, M. and Lücke, A. and
Lumsdaine, A. and Lutsenko, V. and Maaßberg, H. and
Marchuk, O. and Matthew, J. H. and Marsen, S. and
Marushchenko, M. and Masuzaki, S. and Maurer, D. and Mayer,
M. and McCarthy, K. and McNeely, P. and Meier, A. and
Mellein, D. and Mendelevitch, B. and Mertens, P. and
Mikkelsen, D. and Mishchenko, A. and Missal, B. and
Mittelstaedt, J. and Mizuuchi, T. and Mollen, A. and
Moncada, V. and Mönnich, T. and Morisaki, T. and Moseev, D.
and Murakami, S. and Náfrádi, G. and Nagel, M. and
Naujoks, D. and Neilson, H. and Neu, R. and Neubauer, O. and
Neuner, U. and Ngo, T. and Nicolai, D. and Nielsen, S. K.
and Niemann, H. and Nishizawa, T. and Nocentini, R. and
Nührenberg, C. and Nührenberg, J. and Obermayer, S. and
Offermanns, G. and Ogawa, K. and Ölmanns, J. and Ongena, J.
and Oosterbeek, J. W. and Orozco, G. and Otte, M. and Pacios
Rodriguez, L. and Panadero, N. and Panadero Alvarez, N. and
Papenfuß, D. and Paqay, S. and Pasch, E. and Pavone, A. and
Pawelec, E. and Pedersen, T. S. and Pelka, G. and Perseo, V.
and Peterson, B. and Pilopp, D. and Pingel, S. and Pisano,
F. and Plaum, B. and Plunk, G. and Pölöskei, P. and
Porkolab, M. and Proll, J. and Puiatti, M.-E. and Puig
Sitjes, A. and Purps, F. and Rack, M. and Récsei, S. and
Reiman, A. and Reimold, F. and Reiter, D. and Remppel, F.
and Renard, S. and Riedl, R. and Riemann, J. and Risse, K.
and Rohde, V. and Röhlinger, H. and Romé, M. and
Rondeshagen, D. and Rong, P. and Roth, B. and Rudischhauser,
L. and Rummel, K. and Rummel, T. and Runov, A. and Rust, N.
and Ryc, L. and Ryosuke, S. and Sakamoto, R. and Salewski,
M. and Samartsev, A. and Sanchez, E. and Sano, F. and
Satake, S. and Schacht, J. and Satheeswaran, G. and Schauer,
F. and Scherer, T. and Schilling, J. and Schlaich, A. and
Schlisio, G. and Schluck, F. and Schlüter, K.-H. and
Schmitt, J. and Schmitz, H. and Schmitz, O. and Schmuck, S.
and Schneider, M. and Schneider, W. and Scholz, P. and
Schrittwieser, R. and Schröder, M. and Schröder, T. and
Schroeder, R. and Schumacher, H. and Schweer, B. and Scott,
E. and Sereda, S. and Shanahan, B. and Sibilia, M. and
Sinha, P. and Sipliä, S. and Slaby, C. and Sleczka, M. and
Smith, H. and Spiess, W. and Spong, D. A. and Spring, A. and
Stadler, R. and Stejner, M. and Stephey, L. and Stridde, U.
and Suzuki, C. and Svensson, J. and Szabó, V. and
Szabolics, T. and Szepesi, T. and Szökefalvi-Nagy, Z. and
Tancetti, A. and Terry, J. and Thomas, J. and Thumm, M. and
Travere, J. M. and Traverso, P. and Tretter, J. and Trimino
Mora, H. and Tsuchiya, H. and Tsujimura, T. and Tulipán, S.
and Unterberg, B. and Vakulchyk, I. and Valet, S. and Vano,
L. and van Milligen, B. and van Vuuren, A. J. and Vela, L.
and Velasco, J.-L. and Vergote, M. and Vervier, M. and
Vianello, N. and Viebke, H. and Vilbrandt, R. and Vorköper,
A. and Wadle, S. and Wagner, F. and Wang, E. and Wang, N.
and Wang, Z. and Warmer, F. and Wauters, T. and Wegener, L.
and Weggen, J. and Wei, Y. and Weir, G. and Wendorf, J. and
Wenzel, U. and Werner, A. and White, A. and Wiegel, B. and
Wilde, F. and Windisch, T. and Winkler, M. and Winter, A.
and Winters, V. and Wolf, S. and Wolf, R. C. and Wright, A.
and Wurden, G. and Xanthopoulos, P. and Yamada, H. and
Yamada, I. and Yasuhara, R. and Yokoyama, M. and Zanini, M.
and Zarnstorff, M. and Zeitler, A. and Zhang, D. and Zhang,
H. and Zhu, J. and Zilker, M. and Zocco, A. and Zoletnik, S.
and Zuin, M.},
title = {{O}verview of first {W}endelstein 7-{X} high-performance
operation},
journal = {Nuclear fusion},
volume = {59},
number = {11},
issn = {1741-4326},
address = {Vienna},
publisher = {IAEA},
reportid = {FZJ-2019-04066},
pages = {112004 -},
year = {2019},
abstract = {The optimized superconducting stellarator device
Wendelstein 7-X (with major radius , minor radius , and
plasma volume) restarted operation after the assembly of a
graphite heat shield and 10 inertially cooled island
divertor modules. This paper reports on the results from the
first high-performance plasma operation. Glow discharge
conditioning and ECRH conditioning discharges in helium
turned out to be important for density and edge radiation
control. Plasma densities of with central electron
temperatures were routinely achieved with hydrogen gas
fueling, frequently terminated by a radiative collapse. In a
first stage, plasma densities up to were reached with
hydrogen pellet injection and helium gas fueling. Here, the
ions are indirectly heated, and at a central density of a
temperature of with was transiently accomplished, which
corresponds to with a peak diamagnetic energy of and
volume-averaged normalized plasma pressure . The routine
access to high plasma densities was opened with boronization
of the first wall. After boronization, the oxygen impurity
content was reduced by a factor of 10, the carbon impurity
content by a factor of 5. The reduced (edge) plasma
radiation level gives routinely access to higher densities
without radiation collapse, e.g. well above line integrated
density and central temperatures at moderate ECRH power.
Both X2 and O2 mode ECRH schemes were successfully applied.
Core turbulence was measured with a phase contrast imaging
diagnostic and suppression of turbulence during pellet
injection was observed.},
cin = {IEK-4},
ddc = {620},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000470808200004},
doi = {10.1088/1741-4326/ab03a7},
url = {https://juser.fz-juelich.de/record/864232},
}
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