G. Fuchert

Erratum: “Web apps for profile fitting and power balance analysis at Wendelstein 7-X” [Rev. Sci. Instrum. 95, 093529 (2024)]

M. Wappl, S.A. Bozhenkov, M. N. A. Beurskens, S. Bannmann et autres

de (code pays fourni par la source)

Tomographic inversion method to characterize coherent mode activity in the Wendelstein 7-X stellarator

C. Büschel, C. Brandt, H. Thomsen, K. Aleynikova et autres

A new method is presented for the analysis of coherent mode activity, using tomographic reconstruction of the soft x-ray emissivity of the plasma. The analysis includes the determination of the mode frequency, the poloidal mode number, the radial location, the propagation direction, …

de (code pays fourni par la source)

Overview of the ASDEX Upgrade results

T. Pütterich, Felix Albrecht, Edoardo Alessi, Sehoon An et autres

Abstract After a 26-month vent ASDEX Upgrade (AUG) went back in operation with a newly designed upper W-divertor suitable for alternative divertor configurations (featuring in-vessel coils and cryo-pump). Parameter scans and an extensive set of measurements were obtained and their interpretation is …

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Overview of Wendelstein 7-X high-performance operation

O. Grulke, G. Acton, J. Adamek, D. Aggelis et autres

Abstract The 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. This approach, supported by exceptionally high subsystem …

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Tokamak level performance in the optimized stellarator Wendelstein 7-X with stable peaked density profiles

S. Bannmann, Oliver P. Ford, S. Bozhenkov, T. Stange et autres

Progress towards achieving net gain from nuclear fusion is typically characterized by the triple product nTτ. Although stellarators have several benefits for a reactor, such as the inherent steady-state capability and the lack of disruptions, the maximum achieved triple product has historically …

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Evaluation of the reliability of Rayleigh scattering as calibration method for the Thomson scattering diagnostic at W7-X

J. Wagner, G. Fuchert, K.J. Brunner, E. Pasch et autres

Abstract Rayleigh scattering is used in an in-situ approach to determine the relative and absolute calibration factors of the Thomson scattering diagnostic at Wendelstein 7-X (W7-X). Using light pulses from an optical parametric oscillator (OPO), it is shown for the first time …

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A neural network-based method for input parameter optimization of edge transport modeling utilizing experimental diagnostics

Yu Luo, Shuai Xu, Y. Liang, E. Wang et autres

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Compatibility of high-Z impurity accumulation with high plasma performance in ECR-heated W7-X plasmas

D. ; https://orcid.org/0000-0002-5800-4907 Zhang, M. Beurskens, J. Alcuson, G. Wurden et autres