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HEPP Seminar Winter 25/26 #2: A. Mancini / R. Babin / L. Nitzsche

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HGW-SR2 / GAR-D2

HGW-SR2 / GAR-D2
Daniel Told (IPP-Garching), René Bussiahn (IPP Bereich Greifswald)
Description

https://eu02web.zoom-x.de/j/63778308490?pwd=UmmdpAfwf3LhqmoQO9MbTjVYN3kW14.1

 

ID: 637 7830 8490

Code: 492343
 
HEPP Seminar
Participants
  • Daniel Told
  • René Bussiahn
    • 16:00 → 16:15
      A. Mancini (I): Power exhaust capabilities of Alternative Divertor Configurations 15m
      Speaker: Alessandro Mancini (Max Planck Institute for Plasma Physics)
      2025.10.20_AMancini_HEPP_intro.pdf
    • 16:15 → 16:45
      R. Babin (P): Enabling stellarator optimization beyond cylindrical coordinates 30m

      Historically, stellarator optimization has relied on cylindrical coordi-
      nates, which are well-suited for toroidal geometries. However, this coordi-
      nate choice inherently limits the design space, as it struggles to accurately
      represent configurations with a highly inclined magnetic axis or straight
      segments, both features that are increasingly relevant in modern stel-
      larator designs. In particular, both features are important in the search
      for stellarators with reduced boundary shaping. Such configurations, like
      the figure-8 stellarator, instead rely on the ”writhe” of the magnetic axis
      to generate rotational transform. To overcome this limitation, a more
      general, curve-following coordinate system has been implemented in the
      ideal MHD equilibrium solver GVEC. Nevertheless, integration with the
      broader stellarator optimization ecosystem, particularly the widely used
      optimization framework SIMSOPT, has relied on cylindrical coordinates.
      In this talk, I present the successful integration of GVEC with SIM-
      SOPT, enabling full-fledged stellarator optimization in non-cylindrical,
      curve-following coordinates. As a first demonstration, a figure-8 stellara-
      tor was optimized for a vacuum magnetic well, demonstrating access to
      previously unexplored regions of the stellarator design space.

      Speaker: Robert Babin (IPP-Garching)
      Babin_BeyondCylindrical.pdf
    • 16:45 → 17:00
      L. Nitzsche (I): Measurement of core neutral density at W7-X 15m
      Speaker: Lucas Nitzsche (IPP Bereich Greifswald)
      nitzsche-introductory-talk.pdf