MFE: Stellarator Research II

Presentations

• An analytical approach to modeling the effect of magnetic permeable materials on the magnetic fields produced by coils

  ORAL

  Nov. 20, 2025, 2:00 PM – Nov. 20, 2025, 2:12 PM

  Presenters

  • Dominic Seidita

    • University of Wisconsin - Madison

  Authors

  • Dominic Seidita

    • University of Wisconsin - Madison

  • Rogerio Jorge

    • Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA

  View abstract →

• Gradient-based single-stage dipole optimization

  ORAL

  Nov. 20, 2025, 2:12 PM – Nov. 20, 2025, 2:24 PM

  Publication: 1. Kappel, J., Landreman, M., & Malhotra, D. (2024). The Magnetic Gradient Scale Length Explains Why Certain Plasmas Require Close External Magnetic Coils. Plasma Physics and Controlled Fusion, 66(2), 025018. https://doi.org/10.1088/1361-6587/ad1a3e
  2. Fu, L., Paul, E. J., Kaptanoglu, A. A., & Bhattacharjee, A. (2025). Global Stellarator Coil Optimization With Quadratic Constraints and Objectives. Nuclear Fusion, 65(2), 026045. https://doi.org/10.1088/1741-4326/ada810
  3. Qian, T. M., Chu, X., Pagano, C., Patch, D., Zarnstorff, M. C., Berlinger, B., Bishop, D., Chambliss, A., Haque, M., Seidita, D., & Zhu, C. (2023). Design and Construction of the MUSE Permanent Magnet Stellarator. Journal of Plasma Physics, 89(5), 955890502. https://doi.org/10.1017/S0022377823000880
  4. Gates, D. A., Aslam, S., Berzin, B., Bonofiglo, P., Cote, A., Dudt, D. W., Flom, E., Fort, D., Koen, A., Kruger, T. G., Kumar, S. T. A., Martin, M. F., Ottaviano, A., Pasmann, S., Romano, P. K., Swanson, C. P. S., Tang, L., Winkler, E., & Wu, R. (2025). Stellarator Fusion Systems Enabled by Arrays of Planar Coils. Nuclear Fusion, 65(2), 026052. https://doi.org/10.1088/1741-4326/ada56c
  5. Kaptanoglu, A. A., Conlin, R., & Landreman, M. (2023). Greedy Permanent Magnet Optimization. Nuclear Fusion.
  6. Nuclear Fusion, 60(10), 106002. https://doi.org/10.1088/1741-4326/aba453
  7. Yu, G., Liu, K., Qian, T., Xie, Y., Nie, X., & Zhu, C. (2024). Quasi-Single-Stage Optimization for Permanent Magnet Stellarators. Nuclear Fusion, 64(7), 076055. https://doi.org/10.1088/1741-4326/ad521c

  Presenters

  • Lanke Fu

    • Princeton University

  Authors

  • Lanke Fu

    • Princeton University

  • Alan A Kaptanoglu

    • New York University, Courant Institute

  • Elizabeth J Paul

    • Columbia University

  • Amitava Bhattacharjee

    • Princeton University

  View abstract →

• Trends from the DESC omnigenity stellarator database

  ORAL

  Nov. 20, 2025, 2:24 PM – Nov. 20, 2025, 2:36 PM

  Presenters

  • Rahul Gaur

    • Princeton University

  Authors

  • Rahul Gaur

    • Princeton University

  • Yigit Elmacioglu

    • Princeton University

  • Victor F Pacheco

    • CIEMAT

  • Dario Panici

    • Princeton University

  • Greta Isabella Hibbard

    • Ohio University

  • Jose Luis Velasco

    • CIEMAT

  • Daniel William Dudt

    • Thea Energy

  • Rory Conlin

    • University of Maryland

  • Michael Churchill

    • Princeton Plasma Physics Laboratory (PPPL)
    • Princeton Plasma Physics Laboratory

  • Egemen Kolemen

    • Princeton University

  View abstract →

• Non-planar, no-insulation ReBCO coils for an optimized tabletop stellarator

  ORAL

  Nov. 20, 2025, 2:36 PM – Nov. 20, 2025, 3:00 PM

  Publication: [1] "A Non-planar ReBCO Test Coil with 3D-printed Aluminum Support Structure for the EPOS Stellarator." P. Huslage at al. submitted to IEEE Transactions on Applied Superconductivity. https://arxiv.org/abs/2505.08488.
  
  [2] "Strain Optimization for ReBCO High-Temperature Superconducting Stellarator Coils in SIMSOPT." P. Huslage, E. J. Paul, M. Haque. P. F. Gil, N. Foppiani, J. Smoniewski, E. V. Stenson. Journal of Plasma Physics , Volume 91 , Issue 2 , April 2025 , E71.
  https://doi.org/10.1017/S0022377825000224
  
  [3] "Winding angle optimization and testing of small-scale, non-planar, high-temperature superconducting stellarator coils." P Huslage, D Kulla, J-F Lobsien, T Schuler, E V Stenson. Supercond. Sci. Technol. 37, 085010 (2024).
  https://dx.doi.org/10.1088/1361-6668/ad5382
  
  [4] "JANUS: A Robust ReBCO Tape Design for Increased Performance in Magnetic Fields" Paul Huslage. IEEE Transactions on Applied Superconductivity, Volume 34, Issue 5, 6601604 (2024).
  https://doi.org/10.1109/TASC.2024.3362775
  
  [5] EPOS: A Stellarator to confine electron positron plasmas using ReBCO High-Temperature Superconductors. P. Huslage et al. to be submitted to Fusion Engineering and Design.

  Presenters

  • Paul Huslage

    • Max-Planck Institute for Plasma Physics
    • Max Planck Institute for Plasma Physics

  Authors

  • Paul Huslage

    • Max-Planck Institute for Plasma Physics
    • Max Planck Institute for Plasma Physics

  • Eve Virginia Stenson

    • Max Planck Institute for Plasma Physics

  • Pedro F Gil

    • Max Planck Institute for Plasma Physics

  • Jason Smoniewski

    • Max Planck Institute for Plasma Physics

  • Tristan Schuler

    • SchulerTEC

  View abstract →

• Optimization of the Magnetic Gradient Scale Length Improves Coil Plasma Distances in Stellarators

  ORAL

  Nov. 20, 2025, 3:00 PM – Nov. 20, 2025, 3:12 PM

  Presenters

  • Jonathan Kappel

    • University of Maryland College Park

  Authors

  • Jonathan Kappel

    • University of Maryland College Park

  • Matt Landreman

    • University of Maryland College Park

  View abstract →

• Bayesian stellarator coil design

  ORAL

  Nov. 20, 2025, 3:12 PM – Nov. 20, 2025, 3:24 PM

  Presenters

  • Sehyun Kwak

    • Max Planck Institute for Plasma Physics

  Authors

  • Sehyun Kwak

    • Max Planck Institute for Plasma Physics

  • Andrea Pavone

    • Max Planck Institute for Plasma Physics

  • Felix Warmer

    • Max Planck Institute for Plasma Physics
    • TU Eindhoven

  View abstract →

• Experimental characterization of transport effects of internal magnetic islands in Wendelstein 7-X

  ORAL

  Nov. 20, 2025, 3:24 PM – Nov. 20, 2025, 3:36 PM

  Presenters

  • Ramon Lopez Cansino

    • University of Sevilla

  Authors

  • Ramon Lopez Cansino

    • University of Sevilla

  • Eleonora Viezzer

    • Universidad de Sevilla, Sevilla, Spain
    • Department of Atomic, Molecular and Nuclear Physics, University of Seville, Av. Reina Mercedes, Seville, 41012, Spain

  • Valeria Perseo

    • Max Planck Institute for Plasma Physics

  • Oliver Ford

    • Max Planck Institute for Plasma Physics
    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max-Planck-Institute for Plasma Physics (IPP Greifswald)

  • D. M. Matthew Kriete

    • Auburn University

  • Carsten Killer

    • Max Planck Institute for Plasma Physics

  • Felix Reimold

    • Max Planck institute of plasma physics, Greifswald

  View abstract →

• Relation Between Magnetic Geometry and Stellarator Confinement using Data-Driven Methods

  ORAL

  Nov. 20, 2025, 3:36 PM – Nov. 20, 2025, 3:48 PM

  Publication: P. Curvo, D. R. Ferreira, R. Jorge 2025. "Using deep learning to design high aspect ratio fusion devices." Journal of Plasma Physics 91(1), E38
  R. Laia, R. Jorge, G. Abreu 2025. "Data-Driven Approach to Model the Influence of Magnetic Geometry in the Confinement of Fusion Devices." arXiv:2507.03776

  Presenters

  • Rogerio Jorge

    • Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA

  Authors

  • Rogerio Jorge

    • Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA

  • Rodrigo Laia

    • Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal

  • Gonçalo Abreu

    • Alfredo AI

  View abstract →

• Alpha-particle orbits near rational flux surfaces in stellarators

  ORAL

  Nov. 20, 2025, 3:48 PM – Nov. 20, 2025, 4:00 PM

  Publication: Planned papers:
  1. Energetic-particle orbits near rational flux surfaces in stellarators: I. Passing particles
  2. Energetic-particle orbits near rational flux surfaces in stellarators: II. Semi-trapped particles
  3. Alpha-particle orbits in stellarators: finite-gyroradius effects

  Presenters

  • Thomas Edward Foster

    • Princeton University

  Authors

  • Thomas Edward Foster

    • Princeton University

  • Felix I Parra

    • Princeton Plasma Physics Laboratory (PPPL)

  • Roscoe B White

    • Princeton Plasma Physics Laboratory (PPPL)

  • Jose Luis Velasco

    • CIEMAT

  • Ivan Calvo

    • Laboratorio Nacional de Fusion, CIEMAT

  • Elizabeth J Paul

    • Columbia University

  View abstract →

• On Shear Alfvén Wave-Induced Fast Ion Losses in Optimized Stellarator Equilibria

  ORAL

  Nov. 20, 2025, 4:00 PM – Nov. 20, 2025, 4:12 PM

  Presenters

  • Alexey Romanovich Knyazev

    • Columbia University

  Authors

  • Alexey Romanovich Knyazev

    • Columbia University

  • Alexandra Lachmann

    • Columbia University

  • Abdullah Syed Hyder

    • Columbia University

  • Michael Czekanski

    • Cornell University

  • Elizabeth J Paul

    • Columbia University

  • William Fei

    • Columbia University

  View abstract →

• Computing Invariant Tori for Energetic Particles

  ORAL

  Nov. 20, 2025, 4:12 PM – Nov. 20, 2025, 4:24 PM

  Publication: Ruth, Maximilian, Jackson Kulik, and Joshua Burby. Robust computation of higher-dimensional invariant tori from individual trajectories. arXiv preprint arXiv:2505.08715 (2025).

  Presenters

  • Max Ruth

    • Institute for Fusion Studies, University of Texas at Austin

  Authors

  • Max Ruth

    • Institute for Fusion Studies, University of Texas at Austin

  • Jackson Kulik

    • Utah State University

  • Joshua W Burby

    • University of Texas at Austin

  View abstract →

• First X3-operation and density feedback experiments with ECRH at the stellarator Wendelstein 7-X

  ORAL

  Nov. 20, 2025, 4:24 PM – Nov. 20, 2025, 4:36 PM

  Publication: [1] Polei et al. Nuclear Fusion to be submitted

  Presenters

  • Torsten Stange

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, 17491 Greifswald

  Authors

  • Torsten Stange

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, 17491 Greifswald

  • Laurent Krier

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max-Planck-Institute for Plasma Physics, Greifswald, Germany

  • Niklas Simon Polei

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Juergen Baldzuhn

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics
    • Max Planck Institute for Plasma Physics, 17491 Greifswald

  • Sergey Bozhenkov

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, Greifswald

  • Kai Jakob Brunner

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, Greifswald

  • Andreas Dinklage

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics

  • Oliver Ford

    • Max Planck Institute for Plasma Physics
    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max-Planck-Institute for Plasma Physics (IPP Greifswald)

  • Golo Fuchert

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, Greifswald

  • Olaf Grulke

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Kenneth C Hammond

    • Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ, USA
    • Princeton Plasma Physics Laboratory (PPPL)

  • Matthias Hirsch

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Marcin Jakubowski

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Jens Knauer

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, Greifswald

  • Andreas Langenberg

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics

  • Heinrich P Laqua

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics

  • Stefan Marsen

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max-Planck-Institute for Plasma Physics, Greifswald, Germany

  • Dmitry Moseev

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Hans Oosterbeek

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Burkhard Plaum

    • Institute for Interfacial Process Eng. & Plasma Technol. (IGVP), University Stuttgart, Germany

  • Sergey Ponomarenko

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max-Planck-Institute for Plasma Physics, Greifswald, Germany

  • Kian Rahbarnia

    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics, Greifswald

  • Adrian v von Stechow

    • Max Planck Institute for Plasma Physics, Greifswald
    • Max Planck Institute for Plasma Physics, Greifswald, Germany
    • Max Planck Institute for Plasma Physics

  • Edgardo Villalobos

    • Max Planck Institute of Plasma Physics, Greifswald, Germany
    • Max Planck Institute of Plasma Physics, Greifswald

  • Robert C Wolf

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  • Jonas Zimmermann

    • Max Planck Institute for Plasma Physics, Greifswald, Germany

  View abstract →

• Effect of boron powder injection on the density limit in the Large Helical Device

  ORAL

  Nov. 20, 2025, 4:36 PM – Nov. 20, 2025, 4:48 PM

  Publication: Impurity powder injection experiments in the Large Helical Device, Journal of Fusion Energy, Submitted 2025

  Presenters

  • Federico Nespoli

    • Princeton Plasma Physics Laboratory (PPPL)

  Authors

  • Federico Nespoli

    • Princeton Plasma Physics Laboratory (PPPL)

  • Kenji Tanaka

    • National Institute for Fusion Science

  • Suguru Masuzaki

    • National Institute for Fusion Science

  • Mamoru Shoji

    • National Institute for Fusion Science

  • Robert A. Lunsford

    • Princeton Plasma Physics Laboratory (PPPL)

  • Gen Motojima

    • National Institute for Fusion Science

  View abstract →

• Summary of the Stellarator Technology and Advanced Research Strategies (STARS) Report

  ORAL

  Nov. 20, 2025, 4:48 PM – Nov. 20, 2025, 5:00 PM

  Presenters

  • Novimir A Pablant

    • Princeton Plasma Physics Laboratory (PPPL)

  Authors

  • Novimir A Pablant

    • Princeton Plasma Physics Laboratory (PPPL)

  • Adelle M Wright

    • University of Wisconsin-Madison

  • Diane R Demers

    • Xantho Technologies, LLC

  • Benedikt Geiger

    • University of Wisconsin - Madison

  • Walter Guttenfelder

    • Type One Energy Group

  • Matthias Knolker

    • General Atomics

  • D. M. Matthew Kriete

    • Auburn University

  • Bartosz Lomanowski

    • Oak Ridge National Laboratory

  • Felix I Parra

    • Princeton Plasma Physics Laboratory (PPPL)

  • Elizabeth J Paul

    • Columbia University

  • Charles P.S. Swanson

    • Thea Energy

  View abstract →