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HEPP Seminar Summer 2026 #3: G. Savvidis / P. Pecchini / D. Brioschi

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HGW-SR2 / GAR-D2

HGW-SR2 / GAR-D2
Gustavo Grenfell (Max Planck Institute for Plasma Physics - Garching), René Bussiahn (IPP Bereich Greifswald)
Description

https://eu02web.zoom-x.de/j/68203618730?pwd=0ftcdSo212mi4VamayjXSCmZX0tUZJ.1

Meeting-ID: 682 0361 8730
Kenncode: 267281

 
HEPP Seminar
Participants
  • Gustavo Grenfell
  • René Bussiahn
    • 16:00 → 16:15
      G. Savvidis (I): Monolithic-porous tungsten composites via powder metallurgy 15m
      Speaker: Georgios Savvidis
      Georgios Savvidis HEPP.pptx
    • 16:15 → 16:30
      P. Pecchini (I): Syntehtic helium beam diganostic fro GRILLIX simulation 15m
      Speaker: Pietro Pecchini
    • 16:30 → 17:00
      D. Brioschi (P): Addressing the impact of fishbone to core microturbulence with gyrokinetic simulations 30m

      Fishbone instabilities (FBs) [1] are a class of macroscopic plasma modes which develop inside tokamaks around rational surfaces. Numerical [2] and experimental [3] results show a correlation between the development of ITBs inside tokamak plasmas and the destabilization of FBs. These studied point out the need for a self-consistent description of the interaction of FBs with plasma microturbulence, i.e. the main driving mechanism of turbulent transport detrimental for plasma confinement. Our work wants to study such and interaction through gyrokinetic simulations performed with the codes GENE [4] and ORB5 [5], including both the n=m=1 FB and the ion temperature gradient (ITG) mode branches inside the plasma. Multiscale interaction between turbulence, global FB structures and zonal flows is studied via dedicated nonlinear simulations, starting from results obtained through linear ones used to identify the ideal subset of the parameter space where all these modes are present at once.

      [1] K. McGuire et al, 1983 Phys. Rev. Lett. 50 12

      [2] G. Brochard et al, 2024 Nulc. Fusion 65 016052

      [3] X. X. He et al, 2022 Plasma Phys. Control. Fusion 64 015007

      [4] F. Jenko et al, 2000 Phys. Plasmas 7 1904-10

      [5] E. Lanti et al, 2010 Comput. Phys. Commun. 251 107072

      Speaker: Davide Brioschi (Max Planck Institute for Plasma Physics)
      Davide_Brioschi_Progress_Talk.pdf