Results 41 to 50 of about 3,977 (219)
Nuclear Materials and Energy, 2019 A deep understanding of the plasma-wall interaction processes in fusion devices like Wendelstein 7-X is necessary for an efficient plasma operation and a long lifetime of the plasma-facing components.In this work we present an approach employing residual
Jannis Oelmann +7 more
doaj +1 more source
Nuclear Fusion, 2023 The computational cost of constructing 3D magnetohydrodynamic (MHD) equilibria is one of the limiting factors in stellarator research and design. Although data-driven approaches have been proposed to provide fast 3D MHD equilibria, the accuracy with ...
Andrea Merlo +5 more
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Impact of the temperature ratio on turbulent impurity transport in Wendelstein 7-X [PDF]
, 2020 First experimental observations in the Wendelstein 7-X stellarator indicate that the impurity confinement can be explained by turbulent processes. In particular, plasma discharges with increased ion to electron temperature ratio are accompanied by ...
Rahbarnia, K. +37 more
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Configuration Space Control for Wendelstein 7‐X [PDF]
Contributions to Plasma Physics, 2010 AbstractThe Wendelstein 7‐X stellarator (W7‐X) is a superconducting fusion experiment presently under construction at the Greifswald branch of the Max‐Planck‐Institut für Plasmaphysik in Greifswald, Germany. W7‐X is a device with extreme geometrical complexity due to the close‐packing of components inside the cryostat and their complex three ...
Dodson, T. +4 more
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Construction and assembly of WENDELSTEIN 7-X [PDF]
Fusion Engineering and Design, 2006 Abstract WENDELSTEIN 7-X (W7-X) is an optimised stellarator which shall demonstrate the reactor relevance of the HELIAS type magnetic configuration. The magnet configuration is produced by a set of 50 non-planar and 20 planar superconducting coils.
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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.
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The Thomson scattering system at Wendelstein 7-X [PDF]
Review of Scientific Instruments, 2016 This paper describes the design of the Thomson scattering system at the Wendelstein 7-X stellarator. For the first operation campaign we installed a 10 spatial channel system to cover a radial half profile of the plasma cross section. The start-up system is based on one Nd:YAG laser with 10 Hz repetition frequency, one observation optics, five fiber ...
E. Pasch +5 more
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Investigation of mode activity in NBI-heated experiments of Wendelstein 7-X
, 2020 | openaire: EC/H2020/633053/EU//EUROfusionThe 2018 operation phase (OP 1.2b) of the stellarator Wendelstein 7-X (W7-X) included, for the first time, neutral beam injection (NBI) to heat the plasma.
Aekaeslompolo, S. +1 more
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Investigation of Optically Grey Electron Cyclotron Harmonics in Wendelstein 7-X [PDF]
EPJ Web of Conferences, 2019 For a magnetic field of 2.5T, the electron cyclotron harmonics are spectrally well separated in W7-X as it has a large aspect ratio. Because of this advantage from the geometry of W7-X stellarator, it is easier to scan these higher harmonics (70,140,210….
Chaudhary Neha +4 more
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WENDELSTEIN 7-X at the transition to assembly [PDF]
Fusion Engineering and Design, 2005 Abstract The WENDELSTEIN 7-X (W7-X) represents the continuation of fusion experiments of the stellarator type at the Max-Planck Institute for Plasma Physics. The experiment W7-X is built at Greifswald in the northeast of Germany. The size of the device (725 t, height of approximately 4.5 m, diameter approximately 16 m), a superconductive magnet ...
openaire +4 more sources