Results 1 to 10 of about 6,348 (198)

Confirmation of the topology of the Wendelstein 7-X magnetic field to better than 1:100,000 [PDF]

Nature Communications, 2016
Early stellarator designs suffered from high particle losses, an issue that can be addressed by optimization of the coils. Here the authors measure the magnetic field lines in the Wendelstein 7-X stellarator, confirming that the complicated design of the
T. Sunn Pedersen, M. Otte, S. Lazerson, P. Helander, S. Bozhenkov, C. Biedermann, T. Klinger, R. C. Wolf, H. -S. Bosch, The Wendelstein 7-X Team   +9 more
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Status of WENDELSTEIN 7-X construction [PDF]

Proceedings of the 19th IEEE/IPSS Symposium on Fusion Engineering. 19th SOFE (Cat. No.02CH37231), 2003
WENDELSTEIN 7-X, being under construction at the Greifswald branch of the Max-Planck-Institut fur Plasmaphysik, has the objective to prove the reactor relevance of a HELIAS type stellarator. Energy and particle confinement will be investigated in an optimised magnetic configuration and stationary operation of a reactor relevant divertor system will be ...
Wanner, M., Erckmann, V., Feist, J. H., Gardebrecht, W., Hartmann, D., Krampitz, R., Niedermeyer, H., Renner, H., Rummel, T., Schauer, F., Wegener, L., Wesner, F., Müller, G. A., Kasparek, W., Thumm, Manfred . a. ., Dammertz, G.   +15 more
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The ECRH-Power Upgrade at the Wendelstein 7-X Stellarator [PDF]

EPJ Web of Conferences, 2023
The existing ECRH system at W7-X consists of 10 gyrotrons, with output power levels ranging from 0.6 MW up to 1.0 MW each at a frequency of 140 GHz, quasi-optical transmission lines and microwave launchers at the plasma vessel.
Laqua H. P., Avramidis K. A., Braune H., Chelis I., Gantenbein G., Illy S., Ioannidis Z., Jelonnek J., Jin J., Krier L., Lechte C., Leggieri A., Legrand F., Marsen S., Moseev D., Oosterbeek H., Rzesnicki T., Ruess T., Stange T., Thumm M., Tigelis I., Wolf R. C.   +21 more
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Tungsten based divertor development for Wendelstein 7-X

Nuclear Materials and Energy, 2023
Wendelstein 7-X, the world’s largest superconducting stellarator in Greifswald (Germany), started plasma experiments with a water-cooled plasma-facing wall in 2022, allowing for long pulse operation. In parallel, a project was launched in 2021 to develop
Joris Fellinger, M. Richou, G. Ehrke, M. Endler, F. Kunkel, D. Naujoks, Th. Kremeyer, A. Menzel-Barbara, Th. Sieber, J-F. Lobsien, R. Neu, J. Tretter, Z. Wang, J-H. You, H. Greuner, K. Hunger, P. Junghanns, O. Schneider, M. Wirtz, Th. Loewenhoff, A. Houben, A. Litnovsky, P-E. Fraysinnes, P. Emonot, S. Roccella, O. Widlund, B. Končar, M. Tekavčič   +27 more
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Quantitative comparison of impurity transport in turbulence reduced and enhanced scenarios at Wendelstein 7-X

Nuclear Fusion, 2023
We assess the turbulent particle transport being responsible for the limitation of the confinement and, thus, the overall performance of the neoclassically optimized stellarator Wendelstein 7-X.
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   +15 more
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Status of Wendelstein 7-X construction [PDF]

Fusion Engineering and Design, 2007
Abstract Wendelstein 7-X (W7-X) is a fully optimised low-shear stellarator and shall demonstrate the reactor potential of a HELIAS-type fusion device. It is presently under construction at the Max-Planck-Institute for Plasmaphysics (IPP), Greifswald site.
Schauer, F., W7-X Team
openaire   +4 more sources

On the interaction between the island divertor heat fluxes, the scrape-off layer radial electric field and the edge turbulence in Wendelstein 7-X plasmas

Nuclear Fusion, 2022
The formation of the radial electric field, $E_\textrm{r}$ in the scrape-off layer (SOL) has been experimentally studied for attached divertor conditions in stellarator W7-X.
E. Maragkoudakis, D. Carralero, T. Estrada, T. Windisch, Y. Gao, C. Killer, M. Jakubowski, A. Puig Sitjes, F. Pisano, H. Sándor, M. Vecsei, S. Zoletnik, A. Cappa, the W7-X Team   +13 more
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Configuration Management for Wendelstein 7-X [PDF]

Fusion Engineering and Design, 2009
A complex system like the large superconducting Wendelstein 7-X stellarator necessitates a dedicated organizational structure which assures permanent consistency between the requirements of its system specification and the performance attributes of all its components throughout its life time.
Brakel, R., van Eeten, P., Hartmann, D. A., Henkelmann, K., Knauer, J., Müller, K., Okkenga-Wolf, A., Wenzel, U.   +7 more
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Hydrogen content in divertor baffle tiles in Wendelstein 7-X

Nuclear Materials and Energy, 2021
Plasma–wall interactions play a crucial role for the performance of fusion devices and the lifetime of plasma-facing components. In this work the results of some plasma–wall interaction processes, namely the erosion/deposition pattern and the fuel ...
Jannis Oelmann, Erik Wüst, Sebastijan Brezinsek, Cong Li, Dongye Zhao, Marcin Rasinski, Chandra Prakash Dhard, Matej Mayer, Dirk Naujoks, Yu Gao   +9 more
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ECE Diagnostic for the initial Operation of Wendelstein 7-X [PDF]

EPJ Web of Conferences, 2019
The ECE diagnostic at W7-X in its standard mode of operation measures in X2 mode polarization with a 32 channel radiometer in the frequency band around 140 GHz for central magnetic field 2.5T.
Hirsch Matthias, Höfel Udo, Oosterbeek Johan Willem, Chaudhary Neha, Geiger Joachim, Hartfuss Hans-Jürgen, Kasparek Walter, Marushchenko Nikolai, van Milligen Boudewijn, Plaum Burkhard, Stange Torsten, Svensson Jakob, Tsuchiya Hayato, Wagner Dietmar, McWeir Gavin, Wolf Robert   +15 more
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