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Tungsten based dive...
Tungsten based divertor development for Wendelstein 7-X
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- Fellinger, Joris (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Richou, M. (författare)
- CEA Institute for Magnetic Fusion Research, France
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- Ehrke, G. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Endler, M. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Kunkel, F. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Naujoks, D. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Kremeyer, Th. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Menzel-Barbara, A. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Sieber, Th. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Lobsien, J-F (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Neu, R. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Tretter, J. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Wang, Z. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- You, J-H (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Greuner, H. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Hunger, K. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Junghanns, P. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Schneider, O. (författare)
- Max Planck Institute for Plasma Physics, Germany
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- Wirtz, M. (författare)
- Forschungszentrum Jülich GmbH, Germany
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- Loewenhoff, Th. (författare)
- Forschungszentrum Jülich GmbH, Germany
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- Houben, A. (författare)
- Forschungszentrum Jülich GmbH, Germany
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- Litnovsky, A. (författare)
- Forschungszentrum Jülich GmbH, Germany
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- Fraysinnes, P-E (författare)
- CEA LITEN DTCH LCA, France
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- Emonot, P. (författare)
- CEA LITEN DTCH LCA, France
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- Roccella, S. (författare)
- ENEA Frascati Research Centre, Itay
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- Widlund, Ola (författare)
- RISE,Kemi och Tillämpad mekanik
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- Koncar, B. (författare)
- Jožef Stefan Institute, Slovenia
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- Tekavčič, M. (författare)
- Jožef Stefan Institute, Slovenia
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Nuclear Materials and Energy. - 2352-1791. ; 37
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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 a W based divertor, replacing the current CFC divertor, to demonstrate plasma performance of a stellarator with a reactor relevant plasma facing materials with low tritium retention. The project consists of two tasks: Based on experience from the previous experimental campaigns and improved physics modelling, the geometry of the plasma-facing surface of the divertor and baffles is optimized to prevent overloads and to improve exhaust. In parallel, the manufacturing technology for a W based target module is qualified. This paper gives a status update of project. It focusses on the conceptual design of a W based target module, the manufacturing technology and its qualification, which is conducted in the framework of the EUROfusion funded WPDIV program. A flat tile design in which a target module is made of a single target element is pursued. The technology must allow for moderate curvatures of the plasma-facing surface to follow the magnetic field lines. The target element is designed for steady state heat loads of 10 MW/m2 (as for the CFC divertor). Target modules of a similar size and weight as for the CFC divertor are assumed (approx. < 0.25 m2 and < 60 kg) using the existing water cooling infrastructure providing 5 l/s and roughly maximum 15 bar pressure drop per module. The main technology under qualification is based on a CuCrZr heat sink made either by additive manufacturing using laser powder bed fusion (LPBF) or by uniaxial diffusion welding of pre-machined forged CuCrZr plates. After heat treatment, the plasma-facing side of the heat sink is covered by W or if feasible by the more ductile WNiFe, preferably by coating or alternatively by hot isostatic pressing W based tiles with a soft OFE-Cu interlayer. Last step is a final machining of the plasma-exposed surface and the interfaces to the water supply lines and supports to correct manufacturing deformations.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- Wendelstein 7-X
- Divertor
- High heat flux
- Additive manufacturing
- Diffusion welding
- Hot isostatic pressing
- Galvanization
- Plasma spraying
- Tungsten
- WNiFe
- CuCrZr
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Fellinger, Joris
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Richou, M.
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Ehrke, G.
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Endler, M.
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Kunkel, F.
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Naujoks, D.
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visa fler...
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Kremeyer, Th.
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Menzel-Barbara, ...
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Sieber, Th.
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Lobsien, J-F
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Neu, R.
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Tretter, J.
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Wang, Z.
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You, J-H
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Greuner, H.
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Hunger, K.
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Junghanns, P.
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Schneider, O.
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Wirtz, M.
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Loewenhoff, Th.
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Houben, A.
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Litnovsky, A.
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Fraysinnes, P-E
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Emonot, P.
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Roccella, S.
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Widlund, Ola
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Koncar, B.
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Tekavčič, M.
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