Results 11 to 20 of about 452,681 (253)
Turbulence-reduced high-performance scenarios in Wendelstein 7-X
Nuclear FusionIn the Wendelstein 7-X (W7-X) stellarator, turbulence is the dominant transport mechanism in most discharges. This leads to a ‘clamping’ of ion temperature over a wide range of heating power, predominantly flat density profiles where hollow profiles ...O.P. Ford, M. Beurskens, S.A. Bozhenkov, S. Lazerson, L. Vanó, A. Alonso, J. Baldzuhn, C.D. Beidler, C. Biedermann, R. Burhenn, G. Fuchert, D. Hartmann, M. Hirsch, A. Langenberg, H. Laqua, P. McNeely, N. Pablant, E. Pasch, F. Reimold, T. Romba, N. Rust, R. Schroeder, E.R. Scott, T. Stange, H.M. Smith, D. Gradic, R.C. Wolf, D. Zhang, the W7-X Team +28 moredoaj +2 more sourcesGlobal gyrokinetic analysis of Wendelstein 7-X discharge: unveiling the importance of trapped-electron-mode and electron-temperature-gradient turbulence [PDF]
Nuclear FusionWe present the first nonlinear, gyrokinetic, radially global simulation of a discharge of the Wendelstein 7-X-like stellarator, including kinetic electrons, an equilibrium radial electric field, as well as electromagnetic and collisional effects.Felix Wilms, Alejandro Bañón Navarro, Thomas Windisch, Sergey Bozhenkov, Felix Warmer, Golo Fuchert, Oliver Ford, Daihong Zhang, Torsten Stange, Frank Jenko, the W7-X Team +10 moredoaj +2 more sourcesOverview of Wendelstein 7-X high-performance operation
Nuclear FusionThe Wendelstein 7-X (W7-X) stellarator has completed two consecutive experimental campaigns OP 2.2 (Sep.-Dec. 2024) and OP 2.3 (Feb.-May 2025) under a new operational strategy enabling more than one year of uninterrupted device availability.O. Grulke, G. Acton, J. Adamek, D. Aggelis, R.-M. Alamo-Calderon, C. Albert, P. Aleynikov, K. Aleynikova, A. Alonso, G.C. Amanekwe, G. Anda, T. Andreeva, E. Andrew, A. Arkuszewski, S. Arnold, M. Arranz, M. Arvanitou, E. Ascasibar, M. Astrain Etxezarreta, O. Asztalos, K. Avramidis, E. Aymerich, A. Baciero, J.-P. Bähner, S.-G. Baek, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Bañon Navarro, L. Baylor, A. Benndorf, C.D. Beidler, D. Beiersdorf, M. de Beij, M. van Berkel, N. Bertelli, C. Biedermann, B. Bieg, T.M. Biewer, G. Birkenmeier, L. Björk, B. Blackwell, H. Blank, T. Bluhm, D. Böckenhoff, D. Boeyaert, D. Bold, A. Bonciarelli, G. Bongiovi, M. Borchardt, D. Borodin, T. Bosman, Y. Boumendjel, H. Bouvain, S. Bozhenkov, T. Bräuer, C. Brandt, S. Brezinsek, K.J. Brunner, A. Buhler, S. Buller, L. Burton, C. Büschel, R. Bussiahn, B. Buttenschön, A. Buzás, V. Bykov, J. Cai, I. Calvo, A. Cappa, A. Carls, F. Carovani, M. Carr, D. Carralero, T. Carroll, B.B. de Carvalho, J.R. Casas, D. Castano-Bardawil, J. Cavalier, R. Cavazzana, N. Chaudhary, I. Chelis, D. Cipciar, G. Conway, F. Cordella, Y. Corre, P. Costello, K. Crombé, G. Cseh, B. Csillag, H.I. Cu Castillo, G. Czymek, H. Damm, R.J. Davies, S. Degenkolbe, W. Dekeyser, L. Delgado-Aparicio, A. Demby, C. Desgranges, C.-P. Dhard, A. Dinklage, T. Dittmar, L. Dittrich, S. Dräger, M. Dreval, M. Drevlak, J. Droste, R.K. Duligal, P. Dumortier, D. Dunai, E. Edlund, A. Edmondson, P. van Eeten, G. Ehrke, M. Endler, D.A. Ennis, F.J. Escoto, T. Estrada, B. Faber, F. Federici, J. Fellinger, Y. Feng, D.L. Fernando, S. Fischer, O.P. Ford, T. Fornal, J. Frank, H. Frerichs, G. Fuchert, K. Fujii, M. Fukuyama, J. Galdón Quiroga, J. Gallego Llorente, Y. Gao, K. Garcia, O.E. Garcia, M. Garcia-Munoz, J.M. García Regaña, B. Geiger, J. Geiger, P. Geißler, M. Gerard, L. Giudicotti, T. Gonda, J.C. Gonzalez, A. González Ganzábal, A. Goodman, A. Goriaev, D. Gradic, M. Grahl, M. Grasser, D. Grekov, E. Grelier, G. Grenfel, M. Griener, M. Groth, M. Gruca, F. Gudicotti, J.F. Guerrero Arnaiz, V. Haak, M. de Haas, A. Haeussler, A. Hakola, L. van Ham, K.C. Hammond, B. Hamstra, X. Han, S.K. Hansen, A. Harris, J.H. Harris, D. Harting, D. Hartmann, D. Hathiramani, E.V. Hausten, S. Heinrich, P. Helander, G. Held, P. Henderson, F. Henke, S.A. Henneberg, L. Henschke, F. Herold, H. Hillebrecht, E. Hinson, M. Hirsch, A. Hoffmeister, A. Holtz, S.J. Hörmann, D. Höschen, M. Houry, J. Hromadka, J. Hua, X. Huang, K. Hunger, D. Hwangbo, K. Ida, Y. Igitkhanov, S. Iglesias Fernandez, V. Igochine, Z. Ioannidis, F.A. d’Isa, S. Jablonski, B. Jabłoński, M. Jakubowski, F. Jenko, A. Johansson, C. Johnson, T.C.W. van Kaathoven, J. Kaczmarczyk, S. Kajita, J.-P. Kallmeyer, H. Kasahara, W. Kasparek, C. Kawan, Ye.O. Kazakov, S.A. Keller, N. Kenmochi, W. Kernbichler, A.K. Kharwandikar, M. Khokhlov, C. Killer, A. Kirschner, R. Kleiber, C.C. Klepper, T. Klinger, J. Knauer, M. Knaup, A. Knieps, M. Kobayashi, G. Kocsis, M. Koelbl, Y. Kolesnichenko, A. Könies, J. Kontula, P. Kornejew, Y. Kovtun, M. Kozulia, A. Krämer-Flecken, M. Krause, T. Kremeyer, L. Krier, D.M. Kriete, T. Krings, M. Krychowiak, I. Ksiazek, M. Kubkowska, D. Kulla, Y. Kulyk, A. Kumar, F. Kunkel, T. Kurki-Suonio, I. Kuzmych, S. Kwak, L. Laguardia, A. Langenberg, H. Laqua, H.P. Laqua, K. Leche, B. Lee, W. Lee, H. Leyh, Y. Liang, L. Liao, M. Licchelli, Z. Lin, M. Lisaj, A. Litnovsky, F. Litovoli, J. Loizu, B. Lomanowski, R. Lopez Cansino, B. Lopez Miranda, D. Lopez-Rodriguez, J. Lore, A. Lorenz, J. Louwe, E. de la Luna, R. Lunsford, Y. Luo, V. Lutsenko, N. Maaziz, M. Machielsen, R. Mackenbach, M. Madeira, D. Makowski, P. Manz, E. Maragkoudakis, O. Marchuk, A. Marinoni, M. Markl, S. Marsen, J. Martinez Fernandez, Y. Martseniuk, N. Marushchenko, S. Masuzaki, S. Matsheza, D. Maurer, M. Mayer, D. Mazur, K. McCarthy, O. McCormack, P. McNeely, D. Medina Roque, J. Meineke, S. Meitner, A. Menzel-Barbara, B. van Milligen, S. Misdanitis, A. Mishchenko, R. Mitteau, E. Moeyaert, A.I. Mohammed, V.E. Moiseenko, A. Möller, S. Möller, B. Molnar, V. Moncada, D. Morfin-Guerrero, M.C.L. Morren, D. Moseev, G. Motojima, S. Mulas, P. Mulholland, V. Murugesan, M. Nagel, D. Nagy, V. Nair, Y. Narbutt, D. Naujoks, H.G. Neilson, F. Nespoli, G. Neu, R. Neu, O. Neubauer, U. Neuner, S.K. Ngo, D. Nicolai, S.K. Nielsen, N. Nikulsin, T. Nishizawa, L. Nitzsche, C. Nührenberg, R. Ochoukov, G. Offermanns, K. Ogawa, J. Ongena, J.W. Oosterbeek, M. Otte, E. Overduin, N. Pablant, L. Pacios, N. Panadero, A. Pandey, K. Parks, G. Partesotti, E.A. Pasch, S. de Pascuale, R. Pavlichenko, A. Pavone, E. Pawelec, A. de la Pena Gomez, A. Pereira, V. Perseo, B. Peterson, F. Pisano, S. Pitcher, B. Plaum, G. Plunk, L. Podavini, N.S. Polei, P. Poloskei, S. Ponomarenko, P. Pons-Villalonga, A. Popov, M. Porkolab, J.H.E. Proll, M.J. Pueschel, A. Raak, R. Ragona, K. Rahbarnia, M. Rasiński, J. Rasmussen, O. Raths, E. Rattawongnara, D. Refy, F. Reimold, T. Richert, M. Richou, J. Ricken, J.S. Riemann, K. Riße, J. de la Riva Villen, G. Roberg-Clark, E. Rodriguez, C. Rogge, V. Rohde, J. Romazanov, T. Romba, D. Rondeshagen, P. Rong, M. Rud, T. Rummel, A. Runov, N. Rust, L. Ryc, D. Ryndyk, H. Sakai, M. Salewski, E. Sanchez, L. Sanchis Sanchez, S. Satake, G. Satheeswaran, J. Schacht, E. Scharff, F. Scharmer, G. Schlisio, K. Schmid, B.S. Schmidt, G.L. Schmidt, O. Schmitz, M. Schneider, T. Schröder, R. Schroeder, M. Schülke, B. Schweer, S. Sereda, B. Shanahan, J. Shin, S. Shiraiwa, G. Sias, P. Sichta, F.B.T. Siddiki, S. Simko, L. Singh, S. Sipilae, C. Slaby, M. Ślęczka, B. Smith, D.R. Smith, H.M. Smith, J. Smoniewski, M. Spolaore, A. Spring, T. Stange, A. von Stechow, P. Steinbrunner, I. Stepanov, L. Stephey, U. Stroth, C. Suzuki, Y. Suzuki, C. Swee, L. Syrocki, T. Szepesi, M. Szymanski, H. Takahashi, N. Tamura, K. Tanaka, C. Tantos, S. Thiede, H. Thienpondt, H. Thomsen, T. Thun, S. Togo, T. Tork, M. Torkler, H. Trimiño Mora, A. Tsikouras, D. Valougeorgis, S. Varoutis, M. Vavrik, S. Vaz Mendes, M. Vecsei, J.L. Velasco, L. Versemann, M. Verstraeten, M. Vervier, N. Vianello, E. Viezzer, E.-M. Villalobos-Granados, J. Wagner, E. Wang, M. Wappl, F. Warmer, Th. Wegner, W. Wei, G. Weir, N. Wendler, A. White, M. Willensdorfer, T. Windisch, A. Winter, V. Winters, M. Wischmeier, R. de Wolf, R.C. Wolf, J. Wright, G. Wurden, P. Xanthopoulos, S. Xu, H. Yamada, X. Yan, J. Yang, Y. Yang, K. Ye, M. Yokoyama, M. Yoshinuma, B. Zamorski, M. Zanini, M. Zarnstorff, D. Zhang, C. Zhu, M. Zilker, J. Zimmermann, A. Zocco, H. Zohm, S. Zoletnik +518 moredoaj +2 more sourcesDemonstration of reduced neoclassical energy transport in Wendelstein 7-X. [PDF]
Nature, 2021 Research on magnetic confinement of high-temperature plasmas has the ultimate goal of harnessing nuclear fusion for the production of electricity. Although the tokamak1 is the leading toroidal magnetic-confinement concept, it is not without shortcomings ...Beidler CD, Smith HM, Alonso A, Andreeva T, Baldzuhn J, Beurskens MNA, Borchardt M, Bozhenkov SA, Brunner KJ, Damm H, Drevlak M, Ford OP, Fuchert G, Geiger J, Helander P, Hergenhahn U, Hirsch M, Höfel U, Kazakov YO, Kleiber R, Krychowiak M, Kwak S, Langenberg A, Laqua HP, Neuner U, Pablant NA, Pasch E, Pavone A, Pedersen TS, Rahbarnia K, Schilling J, Scott ER, Stange T, Svensson J, Thomsen H, Turkin Y, Warmer F, Wolf RC, Zhang D, W7-X Team. +39 moreeuropepmc +2 more sourcesMagnetic geometry effects on turbulent density fluctuations in Wendelstein 7-X
Nuclear FusionLine-integrated density fluctuation measurements from the core of the optimised stellarator Wendelstein 7-X (W7-X) are studied in the context of magnetic field geometry changes.J.-P. Bähner, L. Podavini, A. Bañón Navarro, M. Porkolab, S.K. Hansen, E.M. Edlund, A. von Stechow, S.A. Bozhenkov, O.P. Ford, G. Fuchert, F. Jenko, A. Langenberg, N.A. Pablant, E. Pasch, P.Zs. Pölöskei, T. Romba, A. Zocco, O. Grulke, the W7-X Team +18 moredoaj +2 more sourcesBroadband Alfvénic excitation correlated to turbulence level in the Wendelstein 7-X stellarator plasmas
Nuclear Fusion, 2023 During the first operational phase (OP1) of the Wendelstein 7-X (W7-X) stellarator, poloidal magnetic field fluctuations, $\dot{B}_{\theta}$ , were measured in several different plasma scenarios with a system of Mirnov coils.S. Vaz Mendes, K. Rahbarnia, C. Slaby, H. Thomsen, J. Schilling, M. Borchardt, R. Kleiber, A. Könies, J.-P. Bähner, A. von Stechow, T. Sunn Pedersen, T. Klinger, the W7-X Team +12 moredoaj +2 more sourcesParticle transport in reduced turbulence neutral beam heated discharges at Wendelstein 7-X
Nuclear FusionA spontaneous reduction in anomalous particle transport in the plasma core is seen experimentally in reproducible, purely neutral beam heated plasma phases at Wendelstein 7-X (W7-X).S. Bannmann, O. Ford, P.Zs. Poloskei, J. Svensson, A. Pavone, S. Kwak, U. Hoefel, E. Pasch, G. Fuchert, H.M. Smith, S. Lazerson, P. McNeely, N. Rust, D. Hartmann, R.C. Wolf, the W7-X Team +15 moredoaj +2 more sources
