1R. Neu 7/4/11R. Neu 7/4/11

R. Neu R. Neu E1/E2 Meeting, 7/4/11E1/E2 Meeting, 7/4/11

E1/E2 meeting on E1/E2 meeting on ‘I‘Intrinsic impurity ntrinsic impurity

transport modelling transport modelling versus experiment’versus experiment’

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Introduction

Manning Manning

Intrinsic impurity transport modelling versus experiment Intrinsic impurity transport modelling versus experiment – R. Neu

Introduction and plans– 13.30 E. Fable:

Turbulent impurity transport in the core of tokamaks, physical mecha-nisms, ongoing validation efforts, potential impact on plasma discharges

– 14.05 R. Dux Impurity transport in the ETB of AUG H-Mode discharges

– 14.40 Coffee – 14.55 M. Valisa:

Achievements and open issues in impurity profile control at JET – 15.30 C. Giroud

Impurity transport characterisation in JET operational scenarios

3R. Neu 7/4/11R. Neu 7/4/11

Manning Issues

Preliminary Results from the Manning SelectionPreliminary Results from the Manning Selection good coverage (personnel, dates) of competencies SC selection close to being finalised Detailed analysis for identification of gaps and shortages ongoing TSL selection had to be restricted to 12 candidates due to available

number of slots (min. stay 60 days)

Next steps in the manning selectionNext steps in the manning selection TFL/(CSU) meetings on the 8th, 11th and 12th of April to finalise Allocated time for parastic experiments in restart (interaction

TFL/CSU/POG)

4R. Neu 7/4/11R. Neu 7/4/11

5R. Neu 7/4/11R. Neu 7/4/11

6R. Neu 7/4/11R. Neu 7/4/11

PPCCPPCC PPCCPPCC PPCC + PDV PPCC + PDV & PDF& PDF

PPCCPPCC PTN + PTN + WALLSWALLS

PTN + WALLPTN + WALL PPCC + PDV PPCC + PDV & PDF& PDF

PPCCPPCC PPCCPPCC

W31

Restart 1

Red: NO parasitic experiments

White: Parasitic experiment with possibility of pulse time.

Yellow: monitoring experiment ONLY

Restart integration

This phase should try to put in place the conditionning/breakdown diagnostic tools

Parasitic Experiments to be filled

7R. Neu 7/4/11R. Neu 7/4/11

Impurity Transport

One of main ILW goals: One of main ILW goals:

Demonstrate/investigate feasibilty of W divertor operation in baseline and Demonstrate/investigate feasibilty of W divertor operation in baseline and

advanced scenariosadvanced scenarios Dedicated experiments as well as long term monitoring envisagedDedicated experiments as well as long term monitoring envisaged Two extremes could ‘hamper’ investigations:Two extremes could ‘hamper’ investigations:

- strong negative impact of central W radiation:- strong negative impact of central W radiation:

change of experiment strategy could be necessarychange of experiment strategy could be necessary

- no measurable influence of W:- no measurable influence of W:

loss of interest by ‘non experts’, design of dedicated discharges loss of interest by ‘non experts’, design of dedicated discharges Supporting investigations on intrinsic impurities by injection of tracersSupporting investigations on intrinsic impurities by injection of tracers

(LBO, gas puffs) (LBO, gas puffs)

8R. Neu 7/4/11R. Neu 7/4/11

Dedicated sessions for impurity transport investigations

Ex-2.2.1 Ex-2.2.1 Determination and Determination and controlcontrol of of thethe intrinsicintrinsic impurityimpurity compositioncomposition in in thethe fullfull W divertor W divertor (4 sessions) (4 sessions)

Ex-2.2.2 Ex-2.2.2 W W screeningscreening, , peakingpeaking and and controlcontrol (5 sessions)(5 sessions)

Ex-3.2.5 Ex-3.2.5 EffectEffect of SOL of SOL transporttransport, , pedestalpedestal and and ELMsELMs on on impurityimpurity transporttransport (C30)(C30)

Ex-2.1.6 Ex-2.1.6 CharacterisationCharacterisation of ICRF of ICRF heatingheating withwith thethe ILW ILW Ex-2.2.4 Ex-2.2.4 ImpurityImpurity seedingseeding in in preparationpreparation forfor ITER ITER Ex-1.1.7 Ex-1.1.7 Divertor W erosion and ELM induced sputtering Divertor W erosion and ELM induced sputtering

Ex-1.1.8 Ex-1.1.8 Long term evolution of W erosion and migrationLong term evolution of W erosion and migration

……

Category 1

Category 2

9R. Neu 7/4/11R. Neu 7/4/11

Parasitic experiments for impurity transport investigations

Parasitic Px-2.1.3 Px-2.1.3 Control of impurities accumulation during current rise in Control of impurities accumulation during current rise in

diverted plasmasdiverted plasmas

……