TSVV1 Progress Workshop 2025 (TENTATIVE)

8 Oct 2025, 09:30 → 10 Oct 2025, 17:30 Europe/Berlin

L5 building, seminar room 315 (top floor) (hybrid)

Tobias Görler (Max Planck Institute for Plasma Physics)

This meeting is (mainly) targeting the members of the TSVV1 on L-/H-transition and pedestal physics. It shall establish, facilitate, and motivate collaborations, serve as a platform for assessing the project performance and for future planning (2026-2027) as well as discussing the current state-of-the-art, preparing for the 2021-2025 final reporting and enabling project monitoring. As encouraged at the latest E-TASC thrust meeting, a list of EUROfusion researchers working on gyrokinetic edge/pedestal studies has been contacted as well for mutual exchange.

Wednesday 8 October

13:00 → 13:15 Welcome and Opening Remarks

Speaker: Tobias Görler (Max Planck Institute for Plasma Physics)

13:15 → 13:45 Lessons Learnt From ITB Studies: Staircase Safety Factor Profiles in Gyrokinetic Simulations at Low Magnetic Shear

Speaker: Arnas Volcokas (EPFL)

13:45 → 14:15 Global gyrokinetic simulations on magnetic equilibria with an off axis q-minimum

Speaker: Dr Giovanni Di Giannatale (EPFL)

14:15 → 14:45 Gyrokinetics & MHD?

Speaker: Ben McMillan (CCFE)

14:45 → 15:15 Parallel magnetic fluctuations in global simulations

Speaker: Facundo Sheffield Heit (MPG)

15:15 → 15:45 Coffee break

15:45 → 16:15 GENE edge applications and imasification

Speaker: Dr Tobias Görler (Max Planck Institute for Plasma Physics)

16:15 → 16:45 Kinetics of plasma-wall interaction: immersed boundaries and neutral dynamics in 1D along B, towards the implementation in 5D gyrokinetics

Speaker: Dr Yanick Sarazin (CEA)

16:45 → 17:15 Full-f simulations of neoclassical physics in the pedestal region (especially bootstrap current)

Speaker: Andreas Bergmann (IPP)

17:15 → 17:45 Contingency for discussions, breakout sessions

Thursday 9 October

09:00 → 09:30 Input from WPTE

Speaker: Dr Nicola Vianello (ENEA)

09:30 → 10:00 A new electromagnetic model for turbulent simulations in SOLEDGE3X

Speaker: Raffael Düll (CEA)

10:00 → 10:20 Effect of electromagnetic perturbations on turbulence regimes in the boundary

Speaker: Brenno De Lucca (EPFL)

10:20 → 10:50 Coffee break

10:50 → 11:20 Theoretical scaling law for H-L back transition

Speaker: Kyungtak Lim (EPFL)

11:20 → 11:45 Validated H-mode simulations with GRILLIX

Speaker: Dr Wladimir Zholobenko (IPP)

11:45 → 12:15 Towards first-principles simulations of the L- to H-mode transition with the global gyrokinetic turbulence code GENE-X

In this work, we use the global gyrokinetic turbulence code GENE-X for simulations of the AUG tokamak including the magnetic X-point. We start with turbulence in a pre-LH-transition L-mode and then perform a power ramp by adjusting the inner boundary condition. We present a summary of the selected observations made during the transient phase of the power ramp.

Speaker: Philipp Ulbl (IPP)

12:15 → 12:30 Contingency for discussions

12:30 → 14:00 Lunch break

14:00 → 14:30 A full-f quasi-neutrality solver for gyrokinetic simulations of tokamaks in presence of poloidal asymmetries

Speaker: Dr Peter Donnel (CEA)

14:30 → 15:00 Core-Pedestal MTMs and Effects of Core TMs on Edge Microturbulence

Speaker: Taweesak Jitsuk (DIFFER)

15:00 → 15:30 IMEP, from multi-machine validation to reactor predictions

Speaker: Michael George Bergmann (MPG)

15:30 → 16:00 Coffee break

16:00 → 16:20 Update on full radius integrated modelling of an L-H transition?

Speaker: Nicola Bonanomi (IPP)

16:20 → 17:45 Contingency for discussions, breakout session, guest presentations

18:30 → 21:30 Social event (dinner)

Friday 10 October

09:00 → 09:20 Gyrokinetic Simulations of JET Pedestal Top Plasmas in the Small-ELM Regime

Speaker: Mattia Dicorato (CEA)

09:20 → 09:40 Modeling of the ETG modes in the TCV pedestal

Speaker: Oleg Krutkin (EPFL)

09:40 → 10:10 Reduced ETG model?

Speaker: Gabriele Merlo (MPG)

10:10 → 10:35 Er measurements along power ramp in JET

Speaker: Emilia Solano (CIEMAT)

10:35 → 11:05 Coffee break

11:05 → 11:30 TSVV4 status & collaboration

Speaker: Daniel Told (IPP)

11:30 → 12:15 Status ACH for TSVV1, Discussion Input for E-TASC General Assembly + future plans

Speaker: Dr Tobias Görler (Max Planck Institute for Plasma Physics)

12:15 → 12:30 Closing

Speaker: Tobias Görler (Max Planck Institute for Plasma Physics)