Overview of the first Wendelstein 7-X long pulse campaign with fully water-cooled plasma facing components

Authors: O. Grulke, C. Albert, J.A. Alcuson Belloso, P. Aleynikov, K. Aleynikova, A. Alonso, G. Anda, T. Andreeva, M. Arvanitou, E. Ascasibar, E. Aymerich, K. Avramidis, J.-P. Bähner, S.-G. Baek, M. Balden, J. Baldzuhn, S. Ballinger, M. Banduch, S. Bannmann, A. Bañón Navarro, L. Baylor, C.D. Beidler, M. Beurskens, C. Biedermann, G. Birkenmeier, T. Bluhm, D. Boeckenhoff, D. Boeyaert, D. Bold, M. Borchardt, D. Borodin, H.-S. Bosch, H. Bouvain, S. Bozhenkov, T. Bräuer, H. Braune, C. Brandt, S. Brezinsek, K.J. Brunner, C. Büschel, R. Bussiahn, A. Buzás, B. Buttenschoen, V. Bykov, I. Calvo, A. Cappa, F. Carovani, D. Carralero, A. Carls, B. Carvalho, D. Castaño-Bardawil, N. Chaudhary, I. Chelis, S. Chen, D. Cipciar, J.W. Coenen, G. Conway, M. Cornelissen, Y. Corre, P. Costello, K. Crombe, G. Cseh, B. Csillag, H.I. Cu Castillo, G. Czymek, H. Damm, R.J. Davies, C. Day, S. Degenkolbe, R. De Wolf, W. Dekeyser, A. Demby, P. Despontin, C.P. Dhard, A. Dinklage, F.A. d’Isa, T. Dittmar, M. Dreval, M. Drevlak, P. Drews, J. Droste, D. Dunai, C. Dyhring, P. van Eeten, E. Edlund, M. Endler, D.A. Ennis, F.J. Escoto, M.S. Espinosa, T. Estrada, D. Fehling, L. Feuerstein, J. Fellinger, Y. Feng, D.L.C. Fernando, S. Fischer, E.R. Flom, O. Ford, T. Fornal, J. Frank, H. Frerichs, G. Fuchert, G. Gantenbein, Y. Gao, K. Garcia, I. García-Cortés, J.M. García-Regaña, B. Geiger, J. Geiger, P. Geissler, M. Gerard, G. Godino-Sedano, T. Gonda, A. González, A. Goriaev, D. Gradic, M. Grahl, H. Greuner, E. Grigore, M. Gruca, J.F. Guerrero Arnaiz, V. Haak, L. van Ham, K. Hammond, B. Hamstra, X. Han, S.K. Hansen, J. Harris, D. Hartmann, D. Hathiramani, S. Hegedus, S. Heinrich, P. Helander, F. Henke, S. Henneberg, L. Henschke, M. Hirsch, U. Hoefel, K. Hoefler, S. Hoermann, K.-P. Hollfeld, A. Holtz, D. Höschen, M. Houry, J. Huang, M. Hubeny, K. Hunger, D. Hwangbo, K. Ida, Y. Igitkhanov, S. Illy, Z. Ioannidis, M. Jablczynska, S. Jablonski, B. Jabłoński, B. Jagielski, M. Jakubowski, J. Jelonnek, F. Jenko, J. Jin, A. Johansson, G. Jouniaux, S. Kajita, J.-P. Kallmeyer, U. Kamionka, W. Kasparek, C. Kawan, Ye. O. Kazakov, N. Kenmochi, W. Kernbichler, A.K. Kharwandikar, M. Khokhlov, C. Killer, A. Kirschner, R. Kleiber, C.C. Klepper, T. Klinger, J. Knauer, A. Knieps, M. Kobayashi, G. Kocsis, Y. Kolesnichenko, A. Könies, J. Kontula, P. Kornejew, S.A. Korteweg, J. Koschinsky, J. Koster, Y. Kovtun, A. Krämer-Flecken, M. Krause, T. Kremeyer, L. Krier, D.M. Kriete, M. Krychowiak, I. Ksia¸zek, M. Kubkowska, M.D. Kuczyński, D. Kulla, A. Kumar, T. Kurki-Suonio, I. Kuzmych, S. Kwak, V. Lancelotti, A. Langenberg, H. Laqua, H.P. Laqua, M.R. Larsen, S. Lazerson, C. Lechte, B. Lee, A. LeViness, M. Lewerentz, Y. Liang, L. Liao, A. Litnovsky, J. Liu, J. Loizu, R. Lopez-Cansino, L.D. Lopez Rodriguez, A. Lorenz, R. Lunsford, Y. Luo, V. Lutsenko, N. Maaziz, M. Machielsen, R. Mackenbach, D. Makowski, E. Maragkoudakis, O. Marchuk, M. Markl, S. Marsen, J. Martínez, N. Marushchenko, S. Masuzaki, D.A. Maurer, M. Mayer, K.J. McCarthy, P. McNeely, D. Medina Roque, J. Meineke, S. Meitner, S. vaz Mendes, A. Menzel-Barbara, B. van Milligen, A. Mishchenko, V. Moiseenko, A. Möller, S. Möller, D. Moseev, G. Motojima, S. Mulas, P. Mulholland, M. Nagel, D. Nagy, Y. Narbutt, D. Naujoks, P. Nelde, R. Neu, O. Neubauer, U. Neuner, D. Nicolai, S. Nielsen, C. Nührenberg, R. Ochoukov, G. Offermanns, J. Ongena, J.W. Oosterbeek, M. Otte, N. Pablant, N. Panadero Alvarez, A. Pandey, G. Partesotti, E.A. Pasch, R. Pavlichenko, E. Pawelec, T.S. Pedersen, V. Perseo, B. Peterson, F. Pisano, B. Plaum, G. Plunk, L. Podavini, N.S. Polei, P. Poloskei, S. Ponomarenko, P. Pons-Villalonga, M. Porkolab, J. Proll, M.J. Pueschel, A. Puig Sitjes, R. Ragona, K. Rahbarnia, M. Rasiński, J. Rasmussen, D. Refy, F. Reimold, M. Richou, J.S. Riemann, K. Riße, J. de la Riva Villén, G. Roberg-Clark, E. Rodriguez, V. Rohde, J. Romazanov, T. Romba, D. Rondeshagen, M. Rud, T. Ruess, T. Rummel, A. Runov, C. Ruset, N. Rust, L. Ryc, T. Rzesnicki, M. Salewski, E. Sánchez, L. Sanchis Sanchez, G. Satheeswaran, J. Schacht, E. Scharff, J. Schilling, G. Schlisio, K. Schmid, J.C. Schmitt, O. Schmitz, M. Schneider, M. Van Schoor, T. Schröder, R. Schroeder, B. Schweer, S. Sereda, B. Shanahan, G. Sias, S. Simko, L. Singh, Y. Siusko, C. Slaby, M. Śle¸czka, B.S. Smith, D.R. Smith, H. Smith, M. Spolaore, A. Spring, T. Stange, A. von Stechow, I. Stepanov, M. Stern, U. Stroth, Y. Suzuki, C. Swee, L. Syrocki, T. Szabolics, T. Szepesi, R. Takacs, H. Takahashi, N. Tamura, C. Tantos, J. Terry, S. Thiede, H. Thienpondt, H. Thomsen, M. Thumm, T. Thun, S. Togo, T. Tork, H. Trimino Mora, A. Tsikouras, Y. Turkin, L. Vano, S. Varoutis, M. Vecsei, J.L. Velasco, M. Verstraeten, M. Vervier, E. Viezzer, J. Wagner, E. Wang, F. Wang, M. Wappl, F. Warmer, T. Wegner, Y. Wei, G. Weir, N. Wendler, U. Wenzel, A. White, F. Wilms, T. Windisch, A. Winter, V. Winters, R. Wolf, G. Wurden, P. Xanthopoulos, H.M. Xiang, S. Xu, H. Yamada, J. Yang, R. Yi, M. Yokoyama, B. Zamorski, M. Zanini, M. Zarnstorff, D. Zhang, S. Zhou, J. Zhu, J. Zimmermann, A. Zocco, S. Zoletnik

Source: Nuclear Fusion, Vol 64, Iss 11, p 112002 (2024)

Subject Terms: stellarator, long-pulse operation, magnetic fusion confinement, divertor detachment, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/a05e816389844ac18f2fb63da24bc4a7

Observation of non-thermal electrons outside the SOL in the Wendelstein 7-X stellarator

Authors: C. Killer, P. Aleynikov, C. Biedermann, C.P. Dhard, P. Drews, Y. Gao, O. Grulke, M. Jakubowski, A. Knieps, G. Kocsis, D. Naujoks, A. Puig Sitjes, M. Spolaore, T. Stange, T. Szepesi, A. Tancetti, H. Thomsen

Source: Nuclear Materials and Energy, Vol 33, Iss , Pp 101274- (2022)

Subject Terms: Stellarator, ECRH, Electric Probes, Electrons, Nuclear engineering. Atomic power, TK9001-9401

File Description: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S2352179122001557; https://doaj.org/toc/2352-1791

Access URL: https://doaj.org/article/533e9c01b5564f83a5a69711312fc30b

Quantitative comparison of impurity transport in turbulence reduced and enhanced scenarios at Wendelstein 7-X

Authors: J.A. Alcusón, Th. Wegner, A. Dinklage, A. Langenberg, J.-P. Bähner, B. Buttenschön, E.M. Edlund, G. Fuchert, J.M. García-Regaña, O. Grulke, Z. Huang, M. Porkolab, A.V. Stechow, P. Xanthopoulos, A. Zocco, the W7-X Team

Source: Nuclear Fusion, Vol 63, Iss 9, p 094002 (2023)

Subject Terms: turbulent transport, impurity transport, stellarator, plasma, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798

File Description: electronic resource

Relation: https://doaj.org/toc/0029-5515

Access URL: https://doaj.org/article/db8d1bc535364214a3052922b1ad8dff

Edge plasma measurements on the OP 1.2a divertor plasmas at W7-X using the combined probe

Authors: P. Drews, C. Killer, J. Cosfeld, A. Knieps, S. Brezinsek, M. Jakubowski, C. Brandt, S. Bozhenkov, A. Dinklage, J. Cai, M. Endler, K. Hammond, M. Henkel, Y. Gao, J. Geiger, O. Grulke, D. Höschen, R. König, A. Krämer-Flecken, Y. Liang, Y. Li, S. Liu, H. Niemann, D. Nicolai, O. Neubauer, U. Neuner, M. Rack, K. Rahbarnia, L. Rudischhauser, N. Sandri, G. Satheeswaran, S. Schilling, H. Thomsen, T. Windisch, S. Sereda

Source: Nuclear Materials and Energy, Vol 19, Iss , Pp 179-183 (2019)

Subject Terms: Nuclear engineering. Atomic power, TK9001-9401

File Description: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S2352179118301108; https://doaj.org/toc/2352-1791

Access URL: https://doaj.org/article/a397dacae26c4bd49617c5e47609ebe8

Dynamics and dependencies of the configuration-dependent 1–2 kHz fluctuation in W7-X

Authors: S.B. Ballinger, J.L. Terry, S.G. Baek, M. Beurskens, K.J. Brunner, G. Fuchert, J. Knauer, C. Killer, E. Pasch, K. Rahbarnia, J. Schilling, E. Scott, A. von Stechow, H. Thomsen, O. Grulke, G. Wurden, G. Kocsis, T. Szepesi, L. Zsuga

Source: Nuclear Materials and Energy, Vol 27, Iss , Pp 100967- (2021)

Subject Terms: Nuclear engineering. Atomic power, TK9001-9401

File Description: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S2352179121000533; https://doaj.org/toc/2352-1791

Access URL: https://doaj.org/article/e8ba88fd95c847acb345353c250655b0

Fast camera imaging of plasmas in Alcator C-Mod and W7-X

Authors: S.B. Ballinger, J.L. Terry, S.G. Baek, K. Tang, A. von Stechow, C. Killer, D. Nicolai, G. Satheeswaran, P. Drews, O. Grulke

Source: Nuclear Materials and Energy, Vol 17, Iss , Pp 269-273 (2018)

Subject Terms: Nuclear engineering. Atomic power, TK9001-9401

File Description: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S2352179118301121; https://doaj.org/toc/2352-1791

Access URL: https://doaj.org/article/1d9fc47c97134405a10cca321f4c5bfb

Edge turbulence measurements in toroidal fusion devices.

Authors: S J Zweben, J A Boedo, O Grulke, C Hidalgo, B LaBombard, R J Maqueda, P Scarin, J L Terry

Source: Plasma Physics & Controlled Fusion; Jul2007, Vol. 49 Issue 7, pS1-S23, 23p

Enhanced energy confinement after series of pellets in Wendelstein 7-X.

Authors: J Baldzuhn¹, baldzuhn@ipp.mpg.de, H Damm¹, C D Beidler¹, K McCarthy², N Panadero², C Biedermann¹, S A Bozhenkov¹, A Dinklage¹, K J Brunner¹, G Fuchert¹, Y Kazakov³, M Beurskens¹, M Dibon⁴, J Geiger¹, O Grulke¹, U Höfel¹, T Klinger¹, F Köchl⁵, J Knauer¹, G Kocsis⁶

Source: Plasma Physics & Controlled Fusion; May2020, Vol. 62 Issue 5, p1-1, 1p

Suppression of electrostatic micro-instabilities in maximum-J stellarators.

Authors: J A Alcusón¹, jorge.alcuson@ipp.mpg.de, P Xanthopoulos¹, G G Plunk¹, P Helander¹, F Wilms², Y Turkin¹, A von Stechow¹, O Grulke^1,3

Source: Plasma Physics & Controlled Fusion; Mar2020, Vol. 62 Issue 3, p1-1, 1p

Experimental characterization of a quasi-coherent turbulent structure in the edge plasma in Wendelstein 7-X.

Authors: X. Han, A. Krämer-Flecken, T. Windisch, M. Hirsch, G. Fuchert, J. Geiger, O. Grulke, S. Liu, K. Rahbarnia, Team, the W7-X

Source: Nuclear Fusion; Jan2020, Vol. 60 Issue 1, p1-1, 1p

Subject Terms: PLASMA boundary layers, ELECTRON emission, REFLECTOMETER

Drift effects on W7-X divertor heat and particle fluxes.

Authors: K C Hammond^1,2, khammond@pppl.gov, Y Gao³, M Jakubowski^1,4, C Killer¹, H Niemann¹, L Rudischhauser¹, A Ali¹, T Andreeva¹, B D Blackwell⁵, K J Brunner¹, B Cannas⁶, P Drewelow¹, P Drews³, M Endler¹, Y Feng¹, J Geiger¹, O Grulke¹, J Knauer¹, S Klose¹, S Lazerson¹

Source: Plasma Physics & Controlled Fusion; Dec2019, Vol. 61 Issue 12, p1-1, 1p

Measurement of the edge ion temperature in W7-X with island divertor by a retarding field analyzer probe.

Authors: Y. Li, M. Henkel, Y. Liang, A. Knieps, P. Drews, C. Killer, D. Nicolai, J. Cosfeld, J. Geiger, Y. Feng, F. Effenberg, D. Zhang, P. Hacker, D. Höschen, G. Satheeswaran, S. Liu, O. Grulke, M. Jakubowski, S. Brezinsek, M. Otte

Source: Nuclear Fusion; Dec2019, Vol. 59 Issue 12, p1-1, 1p

Subject Terms: ION temperature, ELECTRON density, PLASMA temperature, PLASMA physics, EDGES (Geometry), PLASMA boundary layers

Overview of first Wendelstein 7-X high-performance operation.

Authors: T. Klinger, T. Andreeva, S. Bozhenkov, C. Brandt, R. Burhenn, B. Buttenschön, G. Fuchert, B. Geiger, O. Grulke, H.P. Laqua, N. Pablant, K. Rahbarnia, T. Stange, A. von Stechow, N. Tamura, H. Thomsen, Y. Turkin, T. Wegner, I. Abramovic, S. Äkäslompolo

Source: Nuclear Fusion; Nov2019, Vol. 59 Issue 11, p1-1, 1p

Subject Terms: PLASMA density, BLOOD volume, GLOW discharges, GAS as fuel, ELECTRON temperature, HYDROGEN as fuel, HELIUM, HELIUM plasmas

Pellet fueling experiments in Wendelstein 7-X.

Authors: J Baldzuhn¹, baldzuhn@ipp.mpg.de, H Damm¹, C D Beidler¹, K McCarthy², N Panadero², C Biedermann¹, S A Bozhenkov¹, K J Brunner¹, G Fuchert¹, Y Kazakov³, M Beurskens¹, M Dibon⁴, J Geiger¹, O Grulke¹, U Höfel¹, T Klinger¹, F Köchl⁵, J Knauer¹, G Kocsis⁶, P Kornejew¹

Source: Plasma Physics & Controlled Fusion; Sep2019, Vol. 61 Issue 9, p1-1, 1p

Investigation of turbulence rotation and radial electric field in the island divertor and plasma edge at W7-X.

Authors: A Krämer-Flecken¹, a.kraemer-flecken@fz-juelich.de, X Han^1,2, T Windisch³, J Cosfeld¹, P Drews¹, G Fuchert³, J Geiger³, O Grulke³, C Killer³, A Knieps¹, Y Liang¹, S Liu², M Rack¹, team, the W7-X⁴

Source: Plasma Physics & Controlled Fusion; May2019, Vol. 61 Issue 5, p1-1, 1p

Observation of anomalous impurity transport during low-density experiments in W7-X with laser blow-off injections of iron.

Authors: B. Geiger, Th. Wegner, C.D. Beidler, R. Burhenn, B. Buttenschön, R. Dux, A. Langenberg, N.A. Pablant, T. Pütterich, Y. Turkin, T. Windisch, V. Winters, M. Beurskens, C. Biedermann, K.J. Brunner, G. Cseh, H. Damm, F. Effenberg, G. Fuchert, O. Grulke

Source: Nuclear Fusion; Apr2019, Vol. 59 Issue 4, p1-1, 1p

Subject Terms: IRON, STELLARATORS, LASERS

A high power, high density helicon discharge for the plasma wakefield accelerator experiment AWAKE.

Authors: B Buttenschön^1,2, birger.buttenschoen@ipp.mpg.de, N Fahrenkamp², O Grulke²

Source: Plasma Physics & Controlled Fusion; Jul2018, Vol. 60 Issue 7, p1-1, 1p

Magnetic configuration effects on the edge heat flux in the limiter plasma on W7-X measured using the infrared camera and the combined probe.

Authors: P DREWS, H NIEMANN, J COSFELD, Y GAO, J GEIGER, O GRULKE, M HENKEL, D HÖSCHEN, K HOLLFELD, C KILLER, A KRÄMER-FLECKEN, Y LIANG, S LIU, D NICOLAI, O NEUBAUER, M RACK, B SCHWEER, G SATHEESWARAN, L RUDISCHHAUSER, N SANDRI

Source: Plasma Science & Technology; May2018, Vol. 20 Issue 5, p1-1, 1p

Observations of the effects of magnetic topology on the SOL characteristics of an electromagnetic coherent mode in the first experimental campaign of W7-X.

Authors: S.C. Liu, Y. Liang, P. Drews, A. Krämer-Flecken, X. Han, D. Nicolai, G. Satheeswaran, N.C. Wang, J.Q. Cai, A. Charl, J. Cosfeld, G. Fuchert, Y. Gao, J. Geiger, O. Grulke, M. Henkel, M. Hirsch, U. Hoefel, K.P. Hollfeld, D. Höschen

Source: Nuclear Fusion; Apr2018, Vol. 58 Issue 4, p1-1, 1p

Subject Terms: TOPOLOGY, TURBULENCE, ELECTROMAGNETISM, ELECTRONS, MANIPULATORS (Machinery)

Measurement of the plasma edge profiles using the combined probe on W7-X.

Authors: P. Drews, Y. Liang, S. Liu, A. Krämer-Flecken, O. Neubauer, J. Geiger, M. Rack, D. Nicolai, O. Grulke, C. Killer, N. Wang, A. Charl, B. Schweer, P. Denner, M. Henkel, Y. Gao, K. Hollfeld, G. Satheeswaran, N. Sandri, D. Höschen

Source: Nuclear Fusion; Dec2017, Vol. 57 Issue 12, p1-1, 1p

Subject Terms: PLASMA probes, PLASMA potentials, ELECTRON configuration, ELECTRON density, PLASMA flow