Name: TSVV-B Annual Workshop 2026
Start: 2026-09-30T08:30:00+02:00
End: 2026-10-02T12:30:00+02:00
Location: IPP Prague, U Slovanky 2525/1a, 182 00 Praha 8, Czechia

Monday, 28 September 2026
Tuesday, 29 September 2026
Wednesday, 30 September 2026
08:30 Meeting opening
08:30 - 09:30
Room: NHB-4-421, 4th floor
Contributions

08:30 Arrival and setup

09:00 Project status and prospects - Patrick Tamain (CEA)
09:30 LH transition physics (Task 2)
09:30 - 10:30
Room: NHB-4-421, 4th floor
Contributions

09:30 Short update on L-H transition physics in GBS simulations - Davide Mancini (EPFL)

09:45 Analysis of Er well formation in SOLEDGE3X mean-field and turbulence simulations - Michele Lambresa

10:15 Discussion on next steps for L-H transition physics
10:30 Coffee break
Coffee break
10:30 - 11:00
Room: NHB-4-421, 4th floor
11:00 Turbulence in dissipative divertor regimes (Task 1)
11:00 - 12:20
Room: NHB-4-421, 4th floor
Contributions

11:00 Modelling of TCVX23 with GRILLIX + update on latest GRILLIX developments - Andreas Stegmeir (MPG)

11:30 First evaluation light impurity turbulent transport in 3D edge turbulence simulation - Patrick Tamain (CEA)

12:00 Turbulence simulations with baffle in GBS - Davide Mancini (EPFL)
12:20 Lunch break
Lunch break
12:20 - 13:30
Room: NHB-4-421, 4th floor
13:30 Turbulence in dissipative divertor regimes (Task 1) and neutrals physics improvements (Task 6)
13:30 - 15:00
Room: NHB-4-421, 4th floor
Contributions

13:30 Update on the status of KINDNESS - Davide Mancini (EPFL)

14:00 Progress in modelling of fluid neutrals in SOLEDGE3X - Bridget McGibbon

14:30 Update and discussion on advancement of modularization and sharing of neutrals models - Patrick Tamain (CEA)
15:00 Coffee break
Coffee break
15:00 - 15:30
Room: NHB-4-421, 4th floor
15:30 Validation against scaling laws (task 5) + FELTOR code update (cross-tasks)
15:30 - 16:45
Room: NHB-4-421, 4th floor
Contributions

15:30 Dependence of the SOL width on key parameters in SOLEDGE3X - Hugo Corvoysier

16:00 FELTOR code update - CANCELLED, replaced by rapid discussion with Anders N.

16:15 Contingency for discussion (discussion on particle balance time scales?)
Thursday, 1 October 2026
09:00 Progress in upstream and reduced models (task 6)
09:00 - 10:30
Room: NHB-4-421, 4th floor
Contributions

09:00 Status of collisional sheath modelling with He and recent developments of BIT1 code - David Tskhakaya (IPP-CR)

09:30 Updates on k-epsilon turbulence models with applications on SolEdge-HDG - Yakumo Kunimoto

10:00 RANS model developments based on COMPASS electrostatic turbulence simulations - Olivier Renders (LPP-ERM-KMS)
10:30 Coffee break
Coffee break
10:30 - 11:00
Room: NHB-4-421, 4th floor
11:00 Progress on codes performances (task 7) & compliance to EUROfusion requests (task 8)
11:00 - 12:30
Room: NHB-4-421, 4th floor
Contributions

11:00 Soledge3X Code Optimization and GPU Production Computing for the WEST Tokamak - Mathieu Peybernes (EPFL)

11:30 Implicit Solver Performance: Bottlenecks and Optimizations in GBS - Nicola Varini (EPFL)

12:00 Open discussion on software compliance, including IMAS: difficulties, reluctances, progress…
12:30 Lunch break
Lunch break
12:30 - 13:30
Room: NHB-4-421, 4th floor
13:30 Progress in upstream and reduced models (task 6)
13:30 - 14:15
Room: NHB-4-421, 4th floor
Contributions

13:30 Application of RANS model to TCVX23 experiments and comparison to SOL scaling laws - Wouter Dekeyser (LPP-ERM-KMS)

14:00 Discussion on RANS and sheath models
14:15 Overview of TSVV-C (gyrokinetic edge modelling) effort - Daniel Told (IPP)
Overview of TSVV-C (gyrokinetic edge modelling) effort
- Daniel Told (IPP)
14:15 - 14:45
Room: NHB-4-421, 4th floor
14:45 Coffee break
Coffee break
14:45 - 15:15
Room: NHB-4-421, 4th floor
15:15 Turbulence and transport in realistic geometries (task 3)
15:15 - 17:30
Room: NHB-4-421, 4th floor
Contributions

15:15 Numerical investigation of turbulence in MAST-U and comparison to experiments - Anders Nielsen (DTU)

15:45 Effect of divertor leg length on profile widening in TCV - Sergio Garcia Herreros (EPFL)

16:15 Dependence of turbulent transport on the divertor flux expansion in ASDEX Upgrade - Wladimir Zholobenko (IPP)

16:45 GRILLIX simulations of COMPASS-U and JET with GRILLIX - Petr Macha (IPP.CR)

17:15 Contingency for discussion
Friday, 2 October 2026
09:00 Edge plasma turbulence in stellarators (task 4)
09:00 - 11:00
Room: NHB-4-421, 4th floor
Contributions

09:00 Update of stellarator modelling with GBS - Zeno Tecchiolli (EPFL)

09:30 Updates on modelling of 3D configurations with SOLEDGE3X - Hugo Bufferand (CEA)

10:00 Advances in 3D ripple tokamak simulations with SolEdge-HDG: isothermal modelling and preconditioner development toward anisothermal simulations - Marcello Capasso

10:30 Stellarator modelling with GRILLIX - Christoph Pitzal
11:00 Coffee break
Coffee break
11:00 - 11:30
Room: NHB-4-421, 4th floor

11:30 Discussion on project trajectory in 2027 and beyond, preparation of meeting summary
Discussion on project trajectory in 2027 and beyond, preparation of meeting summary
11:30 - 12:30
Room: NHB-4-421, 4th floor