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Goals: * Analyse experimental data from JET * Setup the SOLPS environment at JET

SOLPS5 modelling of Type I ELMing H-mode at JET. TFE modelling meeting 2007 Progress report. Goals: * Analyse experimental data from JET * Setup the SOLPS environment at JET * Start simulation of preELM phase at JET. D1Z_VSFE_LT configuration. Shot # 69818

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Goals: * Analyse experimental data from JET * Setup the SOLPS environment at JET

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  1. SOLPS5 modelling of Type I ELMing H-mode at JET TFE modelling meeting 2007 Progress report Goals: * Analyse experimental data from JET * Setup the SOLPS environment at JET * Start simulation of preELM phase at JET

  2. D1Z_VSFE_LT configuration Shot # 69818 (Carbon Ablation) ne Ptot Prad A.Huber ELM parameters felm = 5 Hz (First Type I ELMs) Wdia/ΔWELM=5.9/0.7 MJ Wdia Type I ELMing H-mode at JET : Discharge parameters Dalpha Dalpha Parameters Bt = 2.5 T Ip = 2.5 MA ne=4x1019 m-3 ne (dl) = 11x 1019 m-2 Prad(max)=130MW P(NBI)=20 MW P(sol)=14MW Wdia PNBI Ptot Prad Gas puff GAS PUFF= NO

  3. Data analysis Upstream profiles : preELM phase Shift applied to edge LIDAR = 5.2 cm !!! (found experimentally by A. Kallenbach ) ne [m-3] CXSE Ti [eV] * nesepm = 2x1019 m-3 preELM * * * * * * ELM * * * * * * separatrix Te [eV] separatrix Ti and Te in confined region approximately the same ~3keV in core ~2keV at the separatrix - 0.5 - 0.4 - 0.3 - 0.2 - 0.1 0 0.1 0.2 r-rsep

  4. Langmuir probes - divertor Inner target Outer target jsat [A.m-2] 36 jsat [A.m-2] jsat [105A.m-2] 1 35 2 34 3 33 4 Inner outer 5 30 6 29 7 28 8 Dalpha Dalpha Te [eV] Te [eV] Te [eV] S1 S28C S2 S29A S3A S3C S29C S4A S30A ne [m-3] S4B ne [m-3] ne [1019m-3] S30C S4C S5A S33A S5B S33C S5C S6C S34A rmid [m] rmid [m] S7C rmid [m] S35A S8B S36A S8C

  5. SOLPS simulation – pre ELM Inputs (experiment): PSOL = 14 MW ne(sepm) =2x1019 m-3 ΔWELM=0.7 MJ Launched runs: *B2/Eirene *Standalone *flat radial profile *TB *poloidally symetric radial profile *no TB in divertor legs Mesh: 36x96 cells Inputs (free): from neoclassical + JETTO estimations D = 0.02 m2.s-1 χi = 0.1 m2.s-1 χe~χi /40 = 0.025 m-3.s-1 ΔETB ~ 4cm Experiment => Ti~Te => Equipartition of energy But from neoclasical theory => χe < χi! • Decrease power flux of electrons or • Increase power flux of ions in inner core in order to keep Ti~Te  Not converged yet  Future plans: * Continue in SOLPS runs for preELM * Type I ELM simulation + drifts

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