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Barbora Gulejová 1 of 10PSI 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
Barbora Gulejová 2 of 10PSI 2008 abstract 5/12/2007
Type I ELMing H-mode on JET
# 70224
Wdia
PIN ~ 20 MW PRAD (below Xpoint)
PRAD (core)
Dalpha 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!)
ELM parametersfelm ~ 2 HzΔWELM ~ 1 MJ
Simulated for the first time ! … with SOLPS5
Core LIDAREdge LIDAR Li beam HRTS ECE
Langmuir probes
time
=baseline scenario for QDT=10 burning plasma operation on ITER !!! To avoid divertor damage => maximum ΔWELM (ITER) ~ 1MJ = this is achievable on JET
Bolometry (A.Huber)radiation between ELMs
Barbora Gulejová 3 of 10PSI 2008 abstract 5/12/2007
SScrape-crape-OOff ff LLayer ayer PPlasma lasma SSimulationimulation Suite of codes to simulate transport in edge plasma of tokamaks
B2B2 - 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 5SOLPS 5 – coupled EIRENE + B2.5
Main inputs: magnetic equilibrium Psol = Pheat – Prad
core upstream separatrix density ne
Free parameters: cross-field transport coefficients (D┴, ┴, v┴)
B2 plasma background =>recycling fluxes
EIRENE
Sources and sinks due to neutrals and molecules
measured
systematicallyadjusted
Barbora Gulejová 4 of 10PSI 2008 abstract 5/12/2007
Simulation vs. experiment - upstream
D [m2.s-1]Χ [m2.s-1]
ne [m-3]
Te [eV]
Ti [eV]
vperp [m.s-1]
inward pinch!
Core LIDAREdge LIDAR Li beam HRTS ECE
Barbora Gulejová 5 of 10PSI 2008 abstract 5/12/2007
Simulation vs. experiment - targets (LP)Outer targetInner target SOLPS LP LP
r-rsep r-rsep
r-rsep r-rsep
8050
0.5
50
1,2
30
Barbora Gulejová 6 of 10PSI 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.
Barbora Gulejová 7 of 10PSI 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 LIDAREdge LIDAR Li beam ECE
Parameters
Bt = 2 T Ip = 2 MA
ne= 4x1019 m-3
P(SOL)= 12 MW
GAS PUFF from inner divertor !!
ELM parametersfelm ~ 30 HzΔWELM ~ 200 kJ
PIN ~ 14 MW PRAD (core)
Dalpha
Wdia
time
Barbora Gulejová 8 of 10PSI 2008 abstract 5/12/2007
Simulation vs. experiment-upstreamEDGE2D+NIMBUS
SOLPS5
-0.1 r-rsep [m]
0
22
0.04
Same AnsatzD,Chi,v
Same ne,Te,Tiupstreamprofiles
Barbora Gulejová 9 of 10PSI 2008 abstract 5/12/2007
Simulation vs. experiment-targets(LP)EDGE2D+NIMBUSSOLPS5
inner target outer target outer target
LP
250300
25 25
7
5
Barbora Gulejová 10 of 10PSI 2008 abstract 5/12/2007
Thank you for attention