Researcher Portfolio
Helander, Per
Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society
Researcher Profile
Position: Stellarator Theory (ST), Max Planck Institute for Plasma Physics, Max Planck Society
Additional IDs: ORCID:
https://orcid.org/0000-0002-0460-590X
Researcher ID: https://pure.mpg.de/cone/persons/resource/persons109354
Publications
(1 - 25 of 512)
: Kuczynski, M. D., Kleiber, R., Smith, H. M., Helander, P., Beidler, C. D., Wappl, M., Borchardt, M., Geiger, J., Bozhenkov, S., Langenberg, A., Andreeva, T., & W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society (2025). Assessment of validity of local neoclassical transport theory for studies of electric-field root-transitions in the W7-X stellarator. Nuclear Fusion, 65: 016019. doi:10.1088/1741-4326/ad90f3. [PubMan] : Helander, P. (2025). Kinetische Plasmatheorie. Vorlesung (SS 2025). Universität Greifswald, 2025-04-08 - 2025-07-17. [PubMan] : Guth, N. J., Vallhagen, O., Helander, P., Pusztai, I., Newton, S. L., & Fülöp, T. (2025). Pellet Rocket Effect in Magnetic Confinement Fusion Plasmas. Physical Review Letters, 134: 035101. doi:10.1103/PhysRevLett.134.035101. [PubMan] : Ricci, P., Helander, P., & Zocco, A. (Eds. ). (2025). Invited Contributions from the 20th European Fusion Theory Conference [Special Issue]. Journal of Plasma Physics, 91(1). [PubMan] : Johansson, C. A., Aleynikov, P., Helander, P., Moseev, D., & W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society (2025). Generation of energetic electrons during X2 ECRH start up. Nuclear Fusion, 65: 056009. doi:10.1088/1741-4326/adc1de. [PubMan] : Kuczynski, M. D., Kleiber, R., Smith, H. M., Beidler, C. D., Borchardt, M., Geiger, J., & Helander, P. (2024). Self-consistent, global, neoclassical radial-electric-field calculations of electron-ion-root transitions in the W7-X stellarator. Nuclear Fusion, 64: 046023. doi:10.1088/1741-4326/ad2d3b. [PubMan] : Mackenbach, R. J. J., Proll, J. H. E., & Helander, P. (2024). Available energy and turbulence in magnetised plasmas. Talk presented at 50th EPS Conference on Plasma Physics. Salamanca. 2024-07-08 - 2024-07-12. [PubMan] : Feng, Y., Winters, V., Zhang, D., Geiger, J., Gao, Y., Reiter, D., Helander, P., Beidler, C. D., Endler, M., Gradic, D., Jakubowski, M., König, R., Kremeyer, T., Krychowiak, M., Naujoks, D., Otte, M., Perseo, V., Reimold, F., Schlisio, G., & W7-X Team, Max Planck Institute for Plasma Physics, Max Planck Society (2024). Conditions and benefits of X-point radiation for the island divertor. Nuclear Fusion, 64: 086027. doi:10.1088/1741-4326/ad5606. [PubMan] : Helander, P., Goodman, A. G., Beidler, C. D., Kuczynski, M. D., & Smith, H. M. (2024). Optimised stellarators with a positive radial electric field. Journal of Plasma Physics, 90(6): 175900602. doi:10.1017/S0022377824001004. [PubMan] : Rodriguez, E., Helander, P., & Goodman, A. G. (2024). The maximum-J property in quasi-isodynamic stellarators. Journal of Plasma Physics, 90(2): 905900212. doi:10.1017/S0022377824000345. [PubMan] : Helander, P. (2024). Hydrodynamik. Vorlesung (WS 2024/2025). Universität Greifswald, 2024-10-17 - 2025-01-31. [PubMan] : Podavini, L., Helander, P., Plunk, G. G., & Zocco, A. (2024). Upper bounds on local gyrokinetic instabilities: how 'optimal' are normal modes?. Poster presented at 50th EPS Conference on Plasma Physics, Salamanca. [PubMan] : Lamalle, P. U., Reman, B., Van Eester, D., Louche, F., Slaby, C., & Helander, P. (2024). Integral dielectric kernel approach to modelling radiofrequency heating in toroidal plasmas. Poster presented at Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna. [PubMan] : Goodman, A., Xanthopoulos, P., Plunk, G., Henneberg, S., Nührenberg, C., Smith, H., Beidler, C., Roberg-Clark, G., & Helander, P. (2024). Searching for SQuIDs: Stable Quasi-Isodynamic Designs for Stellarators. Talk presented at DPG-Frühjahrstagung 2024. Greifswald. 2024-02-26 - 2024-02-29. [PubMan] : Vallhagen, O., Antonsson, L., Halldestam, P., Pusztai, I., Helander, P., Newton, S., Papp, G., Heinrich, P., Patel, A., Hoppe, M., Fülöp, T., ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, & EUROfusion Tokamak Exploitation Team (2024). From injection to deposition – capturing the drift of ablated pellet material in a tokamak. In J. Kirk, & L. Volpe (Eds. ), 50th EPS Conference on Plasma Physics. Geneva: European Physical Society. [PubMan] : Podavini, L., Zocco, A., García-Regana, J. M., Barnes, M., Parra, F. I., Mishchenko, A., & Helander, P. (2024). Ion-temperature- and density-gradient-driven instabilities and turbulence in Wendelstein 7-X close to the stability threshold. Journal of Plasma Physics, 90(4): 905900414. doi:10.1017/S0022377824000722. [PubMan] : Goodman, A. G., Xanthopoulos, P., Plunk, G. G., Smith, H., Nührenberg, C., Beidler, C. D., Henneberg, S. A., Roberg-Clark, G., Drevlak, M., & Helander, P. (2024). Quasi-Isodynamic Stellarators with Low Turbulence as Fusion Reactor Candidates. PRX Energy, 3: 023010. doi:10.1103/PRXEnergy.3.023010. [PubMan] : Podavini, L., Helander, P., Plunk, G. G., & Zocco, A. (2025). Gyrokinetic instabilities and turbulence in stellarators. Talk presented at DPG-Frühjahrstagung der Sektion Materie und Kosmos (SMuK). Göttingen. 2025-03-31 - 2025-04-04. [PubMan] : Helander, P. (in preparation). Stellarator Theory. [PubMan] : Aleynikov, P., Arnold, A. M., Breizman, B. N., Helander, P., & Runov, A. M. (2024). Thermal quench induced by a composite pellet-produced plasmoid. Nuclear Fusion, 64: 016009. doi:10.1088/1741-4326/ad0acc. [PubMan] : Beidler, C. D., Drevlak, M., Geiger, J., Helander, P., Smith, H. M., & Turkin, Y. (2024). Reduction of neoclassical bulk-ion transport to avoid helium-ash retention in stellarator reactors. Nuclear Fusion, 64: 126030. doi:10.1088/1741-4326/ad7ed8. [PubMan] : Helander, P. (2024). Einführung in die Astrophysik. Vorlesung (SS 2024). Universität Greifswald, 2024-04-09 - 2024-07-16. [PubMan] : Helander, P., Goodman, A. G., Beidler, C. D., Kuczynski, M., & Smith, H. M. (2024). Designing stellarators with a transport barrier. Poster presented at Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas, Varenna. [PubMan] : Helander, P., & Mackenbach, R. J. J. (2024). Available energy of plasmas with small fluctuations. Journal of Plasma Physics, 90(4): 905900401. doi:10.1017/S0022377824000746. [PubMan] : Vallhagen, O., Pusztai, I., Helander, P., Antonsson, L., Newton, S., & Fülöp, T. (2024). From injection to deposition – capturing the drift of ablated pellet material in a tokamak. Talk presented at 50th EPS Conference on Plasma Physics. Salamanca. 2024-07-08 - 2024-07-12. [PubMan]