1. Barbora Gulejová 1 of 10 PSI 2008 abstract 5/12/2007 SOLPS modelling of Type I ELMing H-mode on JET Barbora Gulejová, Richard Pitts, David Coster, Xavier Bonnin, Marc Beurskens, Stefan Jachmich, Arne Kallenbach, Janos Marki Rehearsal of abstract for PSI 2008 OUTLINE * Type I ELMing H-mode on JET * Benchmarking code – experiment * Benchmarking code - code

2. Barbora Gulejová 2 of 10 PSI 2008 abstract 5/12/2007 Type I ELMing H-mode on JET # 70224 W dia P IN ~ 20 MW P RAD (below Xpoint) P RAD (core) D alpha Parameters B t = 3 T I p = 3 MA n e =6x10 19 m -3 P(SOL)= 19 MW No GAS PUFF !! ν* ped ~0.03 -0.08 (expected for ITER!) ELM parameters f elm ~ 2 Hz ΔW ELM ~ 1 MJ Simulated for the first time ! … with SOLPS5 Core LIDAR Edge LIDAR Li beam HRTS ECE Langmuir probes time =baseline scenario for Q DT =10 burning plasma operation on ITER !!! To avoid divertor damage => maximum ΔW ELM (ITER) ~ 1MJ = this is achievable on JET Bolometry (A.Huber) radiation between ELMs

3. Barbora Gulejová 3 of 10 PSI 2008 abstract 5/12/2007 Scrape-Off Layer Plasma Simulation Suite of codes to simulate transport in edge plasma of tokamaks B2 B2 - solves 2D multi-species fluid equations on a grid given from magnetic equilibrium EIRENE EIRENE - kinetic transport code for neutrals based on Monte - Carlo algorithm SOLPS 5 SOLPS 5 – coupled EIRENE + B2.5 Main inputs: magnetic equilibrium P sol = P heat – P rad core upstream separatrix density n e Free parameters: cross-field transport coefficients (D ┴,  ┴, v ┴ ) B2 plasma background => recycling fluxes EIRENE Sources and sinks due to neutrals and molecules measured systematically adjusted

4. Barbora Gulejová 4 of 10 PSI 2008 abstract 5/12/2007 Simulation vs. experiment - upstream D [m 2.s -1 ] Χ [m2.s-1] n e [m -3 ] T e [eV] T i [eV] v perp [m.s -1 ] inward pinch! Core LIDAR Edge LIDAR Li beam HRTS ECE

5. Barbora Gulejová 5 of 10 PSI 2008 abstract 5/12/2007 Simulation vs. experiment - targets (LP) Outer targetInner target SOLPS LP r-r sep 80 50 0.5 50 1,2 30

6. Barbora Gulejová 6 of 10 PSI 2008 abstract 5/12/2007 Benchmarking code-code SOLPS 5 B2.5 + EIRENE fluid (Braginskii) kinetic (Monte Carlo), neutrals EDGE2D + NIMBUS fluid (Braginskii) kinetic (Monte Carlo), neutrals (less complex then EIRENE!) vs.

7. Barbora Gulejová 7 of 10 PSI 2008 abstract 5/12/2007 Type I ELMing H-mode on JET # 58569 Succesfully modelled by EDGE2D + NIMBUS by Arne Kallenbach (PPCF 46,2004) Core LIDAR Edge LIDAR Li beam ECE Parameters B t = 2 T I p = 2 MA n e = 4x10 19 m -3 P(SOL)= 12 MW GAS PUFF from inner divertor !! ELM parameters f elm ~ 30 Hz ΔW ELM ~ 200 kJ P IN ~ 14 MW P RAD (core) D alpha W dia time

8. Barbora Gulejová 8 of 10 PSI 2008 abstract 5/12/2007 Simulation vs. experiment-upstream EDGE2D+NIMBUS SOLPS5 -0.1 r-r sep [m] 0 22 0.04 Same Ansatz D,Chi,v Same ne,Te,Ti upstream profiles

9. Barbora Gulejová 9 of 10 PSI 2008 abstract 5/12/2007 Simulation vs. experiment-targets(LP) EDGE2D+NIMBUSSOLPS5 inner target outer target LPLP 250 300 25 7 5

10. Barbora Gulejová 10 of 10 PSI 2008 abstract 5/12/2007 Thank you for attention