Publications of P. Helander

Breizman, B. N.; Kiramov, D. I.; Fontanilla, A. K.; Aleynikov, P. B.; Helander, P.; Oliver, H. J. C.; Sharapov, S. E.: Pellet Physics in Plasmas. 4th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2020), Virtual (2021)

Buller, S.; Helander, P.; Smith, H.; Mollen, A.; Newton, S.; Puszai, I.: Recent progress on neoclassical impurity transport in stellarators with implications for a stellarator reactor. Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Lausanne (submitted)

Helander, P.: On stellarator optimisation. 5th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2020) , Virtual (2021)

Helander, P.: Stellarators: what next? 30th International Toki Conference on Plasma and Fusion Research (ITC 30), Virtual (2021)

Helander, P.; Drevlak, M.; Zarnstorff, M.; Cowley, S. C.: Stellarators with Permanent Magnets. Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Lausanne (2021)

Henneberg, S.; Hudson, S. R.; Pfefferle, D.; Helander, P.: Algorithms for Combined Free-Boundary Plasma & Coil Optimization. 2021 MPPC Annual Meeting (Max-Planck Princeton Center), Virtual (2021)

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)

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)

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)

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)

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)

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)

Helander, P.: Understanding energy confinement in Wendelstein 7-X. 62nd Annual Meeting of the APS Division of Plasma Physics, Virtual Edition (submitted)

Plunk, G.; Helander, P.: Quasisymmetry near axisymmetry. Courant Magneto-Fluid Dynamics Seminar, New York, NY (submitted)

Helander, P.: Mathematical description of stellarators. 1st Annual Meeting of the Simons Collaboration on Hidden Symmetries and Fusion Energy, New York, NY (submitted)

Helander, P.: Available energy in stellarators and tokamaks. Talk at the Courant Institute of Mathematical Sciences, New York, NY (submitted)

Helander, P.: Available energy in stellarators and tokamaks. Plasma Physics Seminar at the University of Wisconsin-Madison, Department of Physics, Madison, WI (submitted)

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)

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)

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)