Publications of P. Helander

Talk (131)

181.
Talk
Henneberg, S. A.; Hudson, S. R.; Pfefferle, D.; Helander, P.: Combined plasma-coil optimization approaches. 63rd Annual Meeting of the APS Division of Plasma Physics, Pittsburgh, PA (submitted)
182.
Talk
Kennedy, D.; Helander, P.: Coulomb collisions in strongly anisotropic electron-positron plasmas. 63rd Annual Meeting of the APS Division of Plasma Physics, Pittsburgh, PA (submitted)
183.
Talk
Landreman, M.; Cerfon, A.; Giuliani, A.; Helander, P.; Jorge, R.; Plunk, G.; Sengupta, W.; Stadler, G.; Wechsung, F.: New approaches to stellarator optimization using expansion in aspect ratio. 63rd Annual Meeting of the APS Division of Plasma Physics, Pittsburgh, PA (2021)
184.
Talk
Mackenbach, R.; Proll, J. H. E.; Helander, P.: The available energy of trapped electrons in a flux tube and its relation to turbulent transport. The Sherwood Fusion Theory Conference, Virtual (submitted)
185.
Talk
Paul, E.; Hudson, S.; Helander, P.: Heat transport as a measure of the effective non-integrable volume. 19th European Fusion Theory Conference (EFTC 2021), Virtual (2021)
186.
Talk
Slaby, C.; Zocco, A.; Mishchenko, A.; Nührenberg, C.; Könies, A.; Kleiber, R.; Borchardt, M.; Geiger, J.; Wang, H.; Todo, Y. et al.; Zanini, M.; Stange, T.; Laqua, H.; Rahbarnia, K.; Thomsen, H.; Wolf, R. C.; Helander, P.; Hatzky, R.; Cole, M.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Linear and nonlinear simulations of pre-current-crash events in Wendelstein 7-X using a variety of models. 30th International Toki Conference on Plasma and Fusion Research (ITC 30), Virtual (submitted)
187.
Talk
Helander, P.: Stellarator Theory. IPP Programme Days 2020, Zoom Meeting (2020)
188.
Talk
Helander, P.: Understanding energy confinement in Wendelstein 7-X. 62nd Annual Meeting of the APS Division of Plasma Physics, Virtual Edition (submitted)
189.
Talk
Plunk, G.; Helander, P.: Quasisymmetry near axisymmetry. Courant Magneto-Fluid Dynamics Seminar, New York, NY (submitted)
190.
Talk
Helander, P.: Mathematical description of stellarators. 1st Annual Meeting of the Simons Collaboration on Hidden Symmetries and Fusion Energy, New York, NY (submitted)
191.
Talk
Helander, P.: Available energy in stellarators and tokamaks. Talk at the Courant Institute of Mathematical Sciences, New York, NY (submitted)
192.
Talk
Helander, P.: Available energy in stellarators and tokamaks. Plasma Physics Seminar at the University of Wisconsin-Madison, Department of Physics, Madison, WI (submitted)
193.
Talk
Henneberg, S. A.; Drevlak, M.; Nührenberg, C.; Beidler, C. D.; Turkin, Y.; Loizu, J.; Helander, P.: Paths towards new quasi-axisymmetric stellarator designs. 46th EPS Conference on Plasma Physics, Milan (submitted)
194.
Talk
Henneberg, S. A.; Drevlak, M.; Nührenberg, C.; Beidler, C. D.; Turkin, Y.; Loizu, J.; Hudson, S. R.; Helander, P.: Towards Novel Quasi-axisymmetric Stellarator Designs. 22nd International Stellarator and Heliotron Workshop 2019 (ISHW 2019), Madison, WI (submitted)
195.
Talk
Proll, J. H. E.; Weir, G. M.; Helander, P.; Xanthopoulos, P.; W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society: Are TEMs stable in the W7‐X high mirror configuration and does this confirm our theory? – Comparisons of ECE data with GENE simulations. 19th Coordinated Working Group Meeting, Berlin (2019)
196.
Talk
Zocco, A.; Aleynikova, K.; Helander, P.; Nührenberg, C.; Xanthopoulos, P.; Connor, J. W.; Motoki, N.: Electromagnetic microinstabilities in tokamaks and stellarators: the Kinetic Ballooning Mode. 19th Coordinated Working Group Meeting, Berlin (2019)
197.
Talk
Zocco, A.; Hatzky, R.; Kleiber, R.; Könies, A.; Mishchenko, A.; Beidler, C. D.; Helander, P.; Nührenberg, C.; Rahbarnia, K.; Thomsen, H. et al.; Turkin, Y.; Weitzner, H.: Reconnection scales in W7-X. 19th Coordinated Working Group Meeting, Berlin (2019)
198.
Talk
Aleynikova, K.; Zocco, A.; Xanthopoulos, P.; Helander, P.; Nührenberg, C.: Kinetic ballooning modes in tokamaks and stellarators. Kinetic Theory Working Group Meeting, Madrid (submitted)
199.
Talk
Aleynikova, K.; Zocco, A.; Xanthopoulos, P.; Helander, P.; Nührenberg, C.; Lazerson, S.: Kinetic ballooning modes in W7-X. Max Planck Princeton Center Workshop 2019 (MPPC 2019), Tokyo (submitted)
200.
Talk
Breizman, B. N.; Aleynikov, P. B.; Fontanilla, A. K.; Helander, P.; Oliver, H. J. C.; Sharapov, S. E.: The feeder pellets and the killer pellets in a plasma. Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna (2018)
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