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SOLPS5 simulations of Type I ELMing H-mode at JET

SOLPS5 simulations of Type I ELMing H-mode at JET. Barbora Gulejov á Richard Pitts, David Coster, Xavier Bonnin, Marc Beurskens, Stefan Jachmich, Arne Kallenbach. OUTLINE. Type I ELMing H-mode (3MA,3T) at JET SOLPS - experiment benchmark Type I ELMing H-mode (2MA,2T) at JET

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SOLPS5 simulations of Type I ELMing H-mode at JET

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  1. SOLPS5 simulations of Type I ELMing H-mode at JET Barbora Gulejová Richard Pitts,David Coster, Xavier Bonnin, Marc Beurskens, Stefan Jachmich, Arne Kallenbach

  2. OUTLINE Type I ELMing H-mode (3MA,3T) at JET SOLPS - experiment benchmark Type I ELMing H-mode (2MA,2T) at JET SOLPS – EDGE2D/Nimbus benchmark * * * *

  3. Type I ELMing H-mode on JET =baseline scenario for QDT=10 burning plasma operation on ITER !!! To avoid divertor damage => maximum ΔWELM (ITER) ~ 1MJ # 70224 Parameters Bt = 3 T Ip = 3 MA ne=6x1019 m-3 P(SOL)= 19 MW No GAS PUFF !! ν*ped ~0.03 -0.08 (expected for ITER!) CoreLIDAR Edge LIDAR Li beam HRTS ECE Dalpha PIN ~ 20 MW PRAD(below Xpoint) PRAD (core) ELM parameters felm ~ 2 Hz ΔWELM ~ 1 MJ Langmuir probes Wdia Bolometry (A.Huber) radiation between ELMs Simulated for the first time ! … with SOLPS5 time

  4. SOLPS vs. experiment - upstream SOLPS grid, sep EFIT, sep CoreLIDAR Edge LIDAR Li beam HRTS ECE ne [m-3] Te [eV] Ti [eV] First results for pre-ELM D[m2.s-1] Χe[m2.s-1] Xi [m2.s-1] * quite promising * unlike for TCV,AU inward pinch radial profile necessary!! D┴= 0.01 m2.s-1 in pedestal 1 m2.s-1 in SOL Χ┴= 0.7 m2.s-1 in pedestal 1 m2.s-1 in SOL Xi < Xe vperp [m.s-1] inward pinch!

  5. SOLPS vs.experiment - targets SOLPS LP Inner target Outer target LP 80 50 50 30 1,2 0.5 r-rsep r-rsep r-rsep map2mid r-rsep map2mid Inner target – good agreement Outer target SOLPS Te too high!

  6. Benchmark SOLPS/EDGE2D/Nimbus Succesfully modelled by EDGE2D + NIMBUS by Arne Kallenbach (PPCF 46,2004) # 58569 CoreLIDAR Edge LIDAR Li beam ECE Parameters Bt = 2 T Ip = 2 MA ne= 4x1019 m-3 P(SOL)= 12 MW GAS PUFF from inner divertor !! Dalpha PIN ~ 14 MW PRAD (core) ELM parameters felm ~ 30 Hz ΔWELM ~ 200 kJ Wdia Grid problem  Deep mesh simulations in progress time

  7. Pre-ELM model vs.experiment EDGE2D+NIMBUS SOLPS5 2 2 Same Ansatz D,Chi,v Same ne,Te,Ti upstream profiles -0.05 0.05 0 r-rsep [m]

  8. Pre-ELM vs. ELM simulation EDGE2D+NIMBUS SOLPS5 ELM D x 20 Chi x 40 1ms 0.05 -0.05 0.05 0 0.05 0.05 -0.05 0 0.1

  9. Upstream profiles evolution during ELM ne SOLPS5 Te preELM preELM post ELM 1ms post ELM 1ms ELM peak post ELM 3ms post ELM 3ms ELM peak r-rsep [m] r-rsep [m] Transport coefficients D, Ch, were increased: * during 1ms * everywhere poloidaly * in the interval 5cm inside and 0.5 cm outside of separatrix radialy

  10. SOLPS vs. experiment-targets(LP) SOLPS5 inner target outer target EDGE2D+NIMBUS outer target 250 250 preELM LP ELM 25 25 5 7 r-rsep map2mid r-rsep map2mid

  11. Thank you for attention !

  12. CONCLUSIONS Type III ELMing H-mode at TCV and Type I ELMing H-mode at JET have been succesfully simulated by SOLPS5 both steady state and transient event Agreement obtained between : code - experiment code - code * * * * * *

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