ITPA

Integrated Operation Scenarios

IOS meeting summary,work plan and actions

October 2011

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IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

ITER: Reports from STAC-10 and STAC-11(provisional)– Scenario modelling well on-track. More work on
divertor compatibility, hybrids, SS and non-active
scenarios. Need validation by experiments (particletransport, MHD,....)– CS conductor is a concern → scenarios. Risk oflosing any margin for operation or back-ups (17MA).
– TF shielding: Proposals, 3cm thicker inner wall.
– Divertor: Decision on W deferred.

Summary2IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Experiments:– JET: Restarted operation with Be/W wall,
operation in stages until July 2012.
– DIII-D: Run-time this October, with new off-axis
NB. Maybe no further operation until Oct. 2012.
– AUG: More RMP coils, ECRH, boron coated
ICRH protection tiles. Ops: Jan-Nov 2012.
– C-Mod: Restarting now, new tilted ICRH antenna+ long pulse LHCD
– FTU: Operation Nov 2011-June 2012, RT ECRH
launcher. Li, LHCD.
Summary3IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Experiments (continued):– Tore Supra: Restart in Sept 2012 (400kV supplyfor ITER), 6-7MW LHCD and 3MW ICRH, longpulse. Long term: WEST.
– LHD: Next: DD operation, closed divertor andincrease in ICRH and ECRH power.
– KSTAR: Lots of new data. Operation: Oct-Nov
2012 with 3.5 MW NBI, diagnostic upgrades.

Summary4IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Joint Experiments (JE's):– IOS-1.1 and IOS-1.2, will continue– IOS-2.3: FTU, TS and KSTAR to contribute.
– IOS-3.1 and IOS-3.2: AUG can do experiments
in 2012 (to be confirmed) + data analyses.
Report on IOS-3.1– IOS-4.1, IOS-4.2 and IOS-4.3 will continue (goodprogress so far)
– IOS 5.2 and IOS 5.3: Lots of new data, need toanalyse jointly.
– IOS-6.1: Refocus → New JE, IOS-6.x– IOS-6.3: Not a strong commitment, but continue
Summary

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IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Discussion on JE:– Boundaries to q95 scenario (fast Ip ramp-up,etc..), li-q diagram. Look at old current ramp
data.
Modify IOS-1.1 Collect 0-D database and see
where we are (G. Sips).
– Real time control of seeding? What is the best
actuator and control strategy. → 2013. Write into
IOS-1.2 that this is a longer term aim.
– Impact of ELM mitigation on plasma scenarios(we should be prepared to pick this up). Discusswith PEP.
Summary

6IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Scenario development (modelling):– CORSICA, baseline simulations (incl. reduced CSperf.), ITER-IO and F4E (incl. ramp-down options)– Non-active phase AND DD operation. Good to seesome DD scenario assessment– Pros and Cons of H, He and DD operation– Hybrids: Several revised simulations, 53-73MW
input power options, q-evolution– Long pulse: Hybrid like 10MA, or baseline like 1015MA, sensitive to impurity concentration (Ar, W)– SS scenarios with ITB and different heating studied
with TCS/TRANSP + MHD stab. analyses.
– TASK and TOTAL for 3-D systems applications
Summary7IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Joint Modelling Activities: 10 JA's in the TG– JA1, Joint modelling of ramp-up experiments, need tocombine data from experiments (C-Mod+....). → advise
to ITER on L-mode ramp-up modelling.
– JA-2, H-L transition modelling. Only report on EU
activity. Detailed modelling of H → L. Local and global
models + include impurities.
– JA-3, Hybrid benchmark is finished. Need to store data+ profiles. New simulations always welcome.
– JA-4, SS scenario code-code benchmark, NF paper.
Still need to improve: He, rotation, new EC launch andFW → Close + store data + profiles?
– JA-5, Hybrid and SS ramp-up access – no progress.
Summary8IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Joint Modelling Activities (continued)– JA-6, Benchmark of full-wave ICRH solvers. NF publ.
nearing completion. 1 DT + 3 low activation cases.
– JA-7, SS scenario modelling, split into two tasks
A: SS exploration (+control), B: Actuators (new JA?).
– JA-8, burn control simulations for ITER – to start!
– JA-9, Optimisation of operation space for long-pulse
scenarios. 15MA baseline at lower ne → 1000s– JA-10,We need to get more focus JA's (priority for a few)
e.g. JA-2, JA-8, JA-9, JA-10
Summary9

IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Actuator Studies– H&CD issues for ITER: EL launcher optimised andnew geometry information will be available soon. ELM
coil induced losses of fast NBI ions are not negligible.
New OFMC solver.
– Simulations of baseline performance with betapedestal and N-NB energy.
– UL+EL launcher modifications would in best caseallow CD for ρ=0-0.9 to be used in scenarios andincreases CD by 50% → 9MW SS scenario at Q~5.3
with 33MW NBI (on+off axis) + 40MW ECCD.

Summary

10IOS Meeting @ Kyoto-Univ., Oct. 2011

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Integrated Operation Scenarios

Integrated scenario control– Good progress on combined control of flux profileand plasma beta (reported under IOS-6.1).
– ITER plasma control working group: Document withrealistic physics requirements for PCS CDR inNovember 2012. Spreadsheets for control area's– Robust profile control is demonstrated, using asimplified model for Te and q variations.
– Simulate NTM and ELM effects in ITER hybrids.
NTM feedback control scheme tested in simulations
for KSTAR.
Summary

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IOS Meeting @ Kyoto-Univ., Oct. 2011

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Actions before the next meeting– By 7th November 2011
• ITPA-CC summary report• JE summary reports• JE proposals for 2012
– Synopsis for the IAEA
– Publication and documentation.
• NF papers from previous IAEA
• Report on some JE (next meeting, IOS-1.1, IOS3.1, database studies fro IOS-4.1, IOS-3.2 )Summary

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Next Meeting:– CIEMAT, Madrid, Spain– 16-19 April 2012 or 17-20 April 2012
– Progress on usual topics + IAEA contributions– Meeting format may evolve....(reporting on JE, JA,high priority tasks)– New chairs: G. Sips, T. Luce and J. Snipes

Summary

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IOS Meeting @ Kyoto-Univ., Oct. 2011

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See you then:

THANK you Shun !!!!

Summary

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IOS Meeting @ Kyoto-Univ., Oct. 2011