Publications of S. Kwak

Journal Article (46)

21.
Journal Article
Beurskens, M. N. A.; Bozhenkov, S. A.; Ford, O.; Xanthopoulos, P.; Zocco, A.; Turkin, Y.; Alonso, A.; Beidler, C.; Calvo, I.; Carralero, D. et al.: Ion temperature clamping in Wendelstein 7-X electron cyclotron heated plasmas. Nuclear Fusion 61, 116072 (2021)
22.
Journal Article
Kwak, S.; Hergenhahn, U.; Höfel, U.; Krychowiak, M.; Pavone, A.; Svensson, J.; Ford, O.; König, R.; Bozhenkov, S.; Fuchert, G. et al.: Bayesian inference of spatially resolved Zeff profiles from line integrated bremsstrahlung spectra. Review of Scientific Instruments 92, 043505 (2021)
23.
Journal Article
Lunsford, R.; Killer, C.; Nagy, A.; Gates, D. A.; Klinger, T.; Dinklage, A.; Satheeswaran, G.; Kocsis, G.; Lazerson, S. A.; Nespoli, F. et al.: Characterization of injection and confinement improvement through impurity induced profile modifications on the Wendelstein 7-X stellarator. Physics of Plasmas 28, 082506 (2021)
24.
Journal Article
Merlo, A.; Böckenhoff, D.; Schilling, J.; Höfel, U.; Kwak, S.; Svensson, J.; Pavone, A.; Lazerson, S. A.; Pedersen, T. S.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Proof of concept of a fast surrogate model of the VMEC code via neural networks in Wendelstein 7-X scenarios. Nuclear Fusion 61, 096039 (2021)
25.
Journal Article
Neuner, U.; Rahbarnia, K.; Beidler, C. D.; Dinklage, A.; Turkin, Y.; Stange, T.; Andreeva, T.; Schilling, J.; Thomsen, H.; Beurskens, M. et al.: Measurements of the parameter dependencies of the bootstrap current in the W7-X stellarator. Nuclear Fusion 61, 036024 (2021)
26.
Journal Article
Pavone, A.; Svensson, J.; Krychowiak, M.; Hergenhahn, U.; Winters, V.; Kornejew, P.; Kwak, S.; Hoefel, U.; Koenig, R.; Wolf, R. C. et al.: Neural network surrogates of Bayesian diagnostic models for fast inference of plasma parameters. Review of Scientific Instruments 92, 033531 (2021)
27.
Journal Article
Perseo, V.; Winters, V.; Feng, Y.; Reimold, F.; Ford, O. P.; König, R.; Bozhenkov, S. A.; Brunner, K. J.; Burhenn, R.; Drewelow, P. et al.: 2D measurements of parallel counter-streaming flows in the W7-X scrape-off layer for attached and detached plasmas. Nuclear Fusion 61, 116039 (2021)
28.
Journal Article
Schilling, J.; Thomsen, H.; Brandt, C.; Kwak, S.; Svensson, J.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Soft x-ray tomograms are consistent with the magneto-hydrodynamic equilibrium in the Wendelstein 7-X stellarator. Plasma Physics and Controlled Fusion 63, 055010 (2021)
29.
Journal Article
Zhang, D.; Burhenn, R.; Beidler, C. D.; Feng, Y.; Thomsen, H.; Brandt, C.; Buller, S.; Reimold, F.; Hacker, P.; Laube, R. et al.: Bolometer tomography on Wendelstein 7-X for study of radiation asymmetry. Nuclear Fusion 61, 116043 (2021)
30.
Journal Article
Zhang, D.; Burhenn, R.; Feng, Y.; König, R.; Buttenschön, B.; Beidler, C. D.; Hacker, P.; Reimold, F.; Thomsen, H.; Laube, R. et al.: Plasma radiation behavior approaching high-radiation scenarios in W7-X. Nuclear Fusion 61, 126002 (2021)
31.
Journal Article
Joung, S.; Kim, J.; Kwak, S.; Bak, J. G.; Lee, S. G.; Han, H. S.; Kim, H. S.; Lee, G.; Kwon, D.; Ghim, Y.-C.: Deep neural network Grad-Shafranov solver constrained with measured magnetic signals. Nuclear Fusion 60, 016034 (2020)
32.
Journal Article
Kwak, S.; Svensson, J.; Bozhenkov, S.; Flanagan, J.; Kempenaars, M.; Boboc, A.; Ghim, Y.-C.; JET Contributors: Bayesian modelling of Thomson scattering and multichannel interferometer diagnostics using Gaussian processes. Nuclear Fusion 60, 046009 (2020)
33.
Journal Article
Pavone, A.; Svensson, J.; Kwak, S.; Brix, M.; Wolf, R. C.; JET Contributors: Neural network approximated Bayesian inference of edge electron density profiles at JET. Plasma Physics and Controlled Fusion 62, 045019 (2020)
34.
Journal Article
Sereda, S.; Brezinsek, S.; Wang, E.; Barbui, T.; Brakel, R.; Buttenschön, B.; Goriaev, A.; Hergenhahn, U.; Höfel, U.; Jakubowski, M. et al.: Impact of boronizations on impurity sources and performance in Wendelstein 7-X. Nuclear Fusion 60, 086007 (2020)
35.
Journal Article
Barbui, T.; Effenberg, F.; König, R.; Krychowiak, M.; Schmitz, O.; Baldzuhn, J.; Blackwell, B. D.; Buttenschön, B.; Drews, P.; Jakubowski, M. et al.: Radiative edge cooling experiments in Wendelstein 7-X start-up limiter campaign. Nuclear Fusion 59, 076008 (2019)
36.
Journal Article
Effenberg, F.; Brezinsek, S.; Feng, Y.; König, R.; Krychowiak, M.; Jakubowski, M.; Niemann, H.; Perseo, V.; Schmitz, O.; Zhang, D. et al.: First demonstration of radiative power exhaust with impurity seeding in the island divertor at Wendelstein 7-X. Nuclear Fusion 59, 106020 (2019)
37.
Journal Article
Höfel, U.; Hirsch, M.; Kwak, S.; Pavone, A.; Svensson, J.; Stange, T.; Hartfuß, H.-J.; Schilling, J.; Weir, G.; Oosterbeek, J. W. et al.: Bayesian modeling of microwave radiometer calibration on the example of the Wendelstein 7-X electron cyclotron emission diagnostic. Review of Scientific Instruments 90, 043502 (2019)
38.
Journal Article
Joffrin, E.; Abduallev, S.; Abhangi, M.; Abreu, P.; Afanasev, V.; Afzal, M.; Aggarwal, K. M.; Ahlgren, T.; Aho-Mantila, L.; Aiba, N. et al.: Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall. Nuclear Fusion 59, 112021 (2019)
39.
Journal Article
Klinger, T.; Andreeva, T.; Bozhenkov, S.; Brandt, C.; Burhenn, R.; Buttenschön, B.; Fuchert, G.; Geiger, B.; Grulke, O.; Laqua, H. P. et al.: Overview of first Wendelstein 7-X high-performance operation. Nuclear Fusion 59, 112004 (2019)
40.
Journal Article
Pavone, A.; Hergenhahn, U.; Krychowiak, M.; Hoefel, U.; Kwak, S.; Svensson, J.; Kornejew, P.; Winters, V.; Koenig, R.; Hirsch, M. et al.: Measurements of visible bremsstrahlung and automatic Bayesian inference of the effective plasma charge Zeff at W7-X. Journal of Instrumentation 14, C10003 (2019)
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