Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X

Thomas Sunn Pedersen*, Ivana Abramovic, P. Agostinetti, M. Agredano Torres, S. Aekaeslompolo, J. Alcuson Belloso, P. Aleynikov, K. Aleynikova, M. Alhashimi, A. Ali, N. Allen, A. Alonso, G. Anda, T. Andreeva, C. Angioni, A. Arkhipov, A. Arnold, W. Asad, E. Ascasibar, M-H AumeunierK. Avramidis, E. Aymerich, S-G Baek, J. Baehner, A. Baillod, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Banon Navarro, T. Barbui, C. Beidler, C. Belafdil, A. Bencze, A. Benndorf, M. Beurskens, C. Biedermann, O. Biletskyi, B. Blackwell, M. Blatzheim, T. Bluhm, D. Boeckenhoff, G. Bongiovi, M. Borchardt, D. Borodin, J. Boscary, H. Bosch, T. Bosmann, B. Boeswirth, L. Boettger, A. Bottino, S. Bozhenkov, R. Brakel, C. Brandt, T. Braeuer, H. Braune, S. Brezinsek, K. Brunner, S. Buller, R. Burhenn, R. Bussiahn, B. Buttenschoen, A. Buzas, Yuri Bykov, Ivan Calvo, K. Camacho Mata, Caminal, B. Cannas, A. Cappa, A. Carls, F. Carovani, M. Carr, D. Carralero, B. Carvalho, J. Casas, D. Castano-Bardawil, F. Castejon, N. Chaudhary, Chelis, A. Chomiczewska, J. W. Coenen, M. Cole, F. Cordella, Y. Corre, K. Crombe, G. Cseh, B. Csillag, H. Damm, C. Day, M. de Baar, E. De la Cal, S. Degenkolbe, A. Demby, S. Denk, C. Dhard, A. Di Siena, A. Dinklage, T. Dittmar, M. Dreval, M. Drevlak, P. Drewelow, P. Drews, D. Dunai, E. Edlund, F. Effenberg, G. Ehrke, M. Endler, D. A. Ennis, F. J. Escoto, T. Estrada, E. Fable, N. Fahrenkamp, A. Fanni, J. Faustin, J. Fellinger, Y. Feng, W. Figacz, E. Flom, O. Ford, T. Fornal, H. Frerichs, S. Freundt, G. Fuchert, M. Fukuyama, F. Fullenbach, G. Gantenbein, Y. Gao, K. Garcia, J. M. Garcia Regana, Garcia-Cortes, J. Gaspar, D. A. Gates, J. Geiger, B. Geiger, L. Giudicotti, A. Gonzalez, A. Goriaev, D. Gradic, M. Grahl, J. P. Graves, J. Green, E. Grelier, H. Greuner, S. Gross, H. Grote, M. Groth, M. Gruca, O. Grulke, M. Gruen, J. Guerrero Arnaiz, S. Guenter, Haak, M. Haas, P. Hacker, A. Hakola, A. Hallenbert, K. Hammond, X. Han, S. K. Hansen, J. H. Harris, H. Hartfuss, D. Hartmann, D. Hathiramani, R. Hatzky, J. Hawke, S. Hegedus, B. Hein, B. Heinemann, P. Helander, S. Henneberg, U. Hergenhahn, C. Hidalgo, F. Hindenlang, M. Hirsch, U. Hoefel, K. P. Hollfeld, A. Holtz, D. Hopf, D. Hoeschen, M. Houry, J. Howard, X. Huang, M. Hubeny, S. Hudson, K. Ida, Y. Igitkhanov, Valentin Igochine, S. Illy, C. Ionita-Schrittwieser, M. Isobe, S. Jablonski, B. Jagielski, M. Jakubowski, Anton Jansen van Vuuren, J. Jelonnek, F. Jenko, T. Jensen, H. Jenzsch, P. Junghanns, J. Kaczmarczyk, J. Kallmeyer, U. Kamionka, M. Kandler, S. Kasilov, Y. Kazakov, D. Kennedy, A. Kharwandikar, M. Khokhlov, C. Kiefer, C. Killer, A. Kirschner, R. Kleiber, T. Klinger, S. Klose, J. Knauer, A. Knieps, F. Koechl, G. Kocsis, Ya Kolesnichenko, A. Koenies, R. Koenig, J. Kontula, P. Kornejew, J. Koschinsky, M. M. Kozulia, A. Kraemer-Flecken, R. Krampitz, M. Krause, N. Krawczyk, T. Kremeyer, L. Krier, D. M. Kriete, M. Krychowiak, I. Ksiazek, M. Kubkowska, M. Kuczynski, G. Kuehner, A. Kumar, T. Kurki-Suonio, S. Kwak, M. Landreman, P. T. Lang, A. Langenberg, H. P. Laqua, H. Laqua, R. Laube, S. Lazerson, M. Lewerentz, C. Li, Y. Liang, Ch Linsmeier, J. Lion, A. Litnovsky, S. Liu, J. Lobsien, J. Loizu, J. Lore, A. Lorenz, U. Losada, F. Louche, R. Lunsford, VN Lutsenko, M. Machielsen, F. Mackel, J. Maisano-Brown, O. Maj, D. Makowski, G. Manduchi, E. Maragkoudakis, O. Marchuk, S. Marsen, E. Martines, J. Martinez-Fernandez, M. Marushchenko, S. Masuzaki, D. Maurer, M. Mayer, K. J. McCarthy, O. Mccormack, P. McNeely, H. Meister, B. Mendelevitch, S. Mendes, A. Merlo, A. Messian, A. Mielczarek, O. Mishchenko, B. Missal, R. Mitteau, V. E. Moiseenko, A. Mollen, Victor Moncada, T. Moennich, T. Morisaki, D. Moseev, G. Motojima, S. Mulas, M. Mulsow, M. Nagel, D. Naujoks, Volker Naulin, T. Neelis, H. Neilson, R. Neu, O. Neubauer, U. Neuner, D. Nicolai, S. K. Nielsen, H. Niemann, T. Nishiza, T. Nishizawa, C. Nuehrenberg, R. Ochoukov, J. Oelmann, G. Offermanns, K. Ogawa, S. Okamura, J. Oelmanns, J. Ongena, J. Oosterbeek, M. Otte, N. Pablant, N. Panadero Alvarez, A. Pandey, E. Pasch, R. Pavlichenko, A. Pavone, E. Pawelec, G. Pechstein, G. Pelka, Valeria Perseo, B. Peterson, D. Pilopp, S. Pingel, F. Pisano, B. Plockl, G. Plunk, P. Poloskei, B. Pompe, A. Popov, M. Porkolab, J. Proll, M. J. Pueschel, M-E Puiatti, A. Puig Sitjes, F. Purps, K. Rahbarnia, J. Rasmussen, A. Reiman, F. Reimold, M. Reisner, D. Reiter, M. Richou, R. Riedl, J. Riemann, K. Risse, G. Roberg-Clark, A Rohde, J. Romazanov, D. Rondeshagen, P. Rong, L. Rudischhauser, T. Rummel, K. Rummel, A. Runov, N. Rust, L. Ryc, P. Salembier, M. Salewski, E. Sanchez, S. Satake, G. Satheeswaran, J. Schacht, E. Scharff, F. Schauer, J. Schilling, G. Schlisio, K. Schmid, J. Schmitt, O. Schmitz, W. Schneider, M. Schneider, P. Schneider, R. Schrittwieser, T. Schroeder, M. Schroeder, R. Schroeder, B. Schweer, D. Schwoerer, E. Scott, B. Shanahan, G. Sias, P. Sichta, M. Singer, P. Sinha, S. Sipilä, C. Slaby, M. Sleczka, H. Smith, J. Smoniewski, E. Sonnendrucker, M. Spolaore, A. Spring, R. Stadler, T. Stange, A.Y. Stepanov, L. Stephey, J. Stober, U. Stroth, E. Strumberger, C. Suzuki, Y. Suzuki, J. Svensson, T. Szabolics, T. Szepesi, M. Szucs, F. L. Tabares, N. Tamura, A. Tancetti, C. Tantos, J. Terry, H. Thienpondt, H. Thomsen, M. Thumm, J. M. Travere, P. Traverso, J. Tretter, E. Trier, H. Trimino Mora, T. Tsujimura, Y. Turkin, A. Tykhyi, B. Unterberg, P. van Eeten, B. Ph van Milligen, M. van Schoor, L. Vano, S. Varoutis, M. Vecsei, L. Vela, J. L. Velasco, M. Vervier, N. Vianello, H. Viebke, R. Vilbrandt, G. Vogel, N. Vogt, C. Volkhausen, A. von Stechow, F. Wagner, E. Wang, H. Wang, F. Warmer, T. Wauters, L. Wegener, T. Wegner, G. Weir, U. Wenzel, A. White, F. Wilde, F. Wilms, T. Windisch, M. Winkler, A. Winter, Victoria Winters, R. Wolf, A. M. Wright, G. A. Wurden, P. Xanthopoulos, S. Xu, H. Yamada, H. Yamaguchi, M. Yokoyama, M. Yoshinuma, Q. Yu, M. Zamanov, M. Zanini, M. Zarnstorff, D. Zhang, S. Zhou, J. Zhu, C. Zhu, M. Zilker, A. Zocco, H. Zohm, S. Zoletnik, L. Zsuga

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
25 Downloads (Pure)

Abstract

We present recent highlights from the most recent operation phases of Wendelstein 7-X, the most advanced stellarator in the world. Stable detachment with good particle exhaust, low impurity content, and energy confinement times exceeding 100 ms, have been maintained for tens of seconds. Pellet fueling allows for plasma phases with reduced ion-temperature-gradient turbulence, and during such phases, the overall confinement is so good (energy confinement times often exceeding 200 ms) that the attained density and temperature profiles would not have been possible in less optimized devices, since they would have had neoclassical transport losses exceeding the heating applied in W7-X. This provides proof that the reduction of neoclassical transport through magnetic field optimization is successful. W7-X plasmas generally show good impurity screening and high plasma purity, but there is evidence of longer impurity confinement times during turbulence-suppressed phases.

Original languageEnglish
Article number042022
Number of pages13
JournalNuclear Fusion
Volume62
Issue number4
DOIs
Publication statusPublished - 1 Apr 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • magnetic confinement
  • stellarator
  • Wendelstein 7-X
  • divertor
  • detachment
  • neoclassical optimization

Fingerprint

Dive into the research topics of 'Experimental confirmation of efficient island divertor operation and successful neoclassical transport optimization in Wendelstein 7-X'. Together they form a unique fingerprint.

Cite this