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E1/E2 meeting on ‘I ntrinsic impurity transport modelling versus experiment’. R. Neu E1/E2 Meeting, 7/4/11. Introduction. Manning Intrinsic impurity transport modelling versus experiment R. Neu Introduction and plans 13.30 E. Fable:

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

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R neu e1 e2 meeting 7 4 11

E1/E2 meeting on ‘Intrinsic impurity transport modelling versus experiment’

R. Neu

E1/E2 Meeting, 7/4/11


Introduction

Introduction

  • Manning

  • 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


Manning issues

Manning Issues

  • Preliminary 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 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)


R neu e1 e2 meeting 7 4 11

Restart integration

Red: NO parasitic experiments

Yellow: monitoring experiment ONLY

White: Parasitic experiment with possibility of pulse time.

Restart 1

W31

Parasitic Experiments to be filled

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


Impurity transport

Impurity Transport

  • One of main ILW goals:

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

  • Dedicated experiments as well as long term monitoring envisaged

  • Two extremes could ‘hamper’ investigations:

    - strong negative impact of central W radiation:

     change of experiment strategy could be necessary

    - no measurable influence of W:

     loss of interest by ‘non experts’, design of dedicated discharges

  • Supporting investigations on intrinsic impurities by injection of tracers

    (LBO, gas puffs)


Dedicated sessions for impurity transport investigations

Dedicated sessions for impurity transport investigations

Category 1

  • Ex-2.2.1 Determination and control of the intrinsic impurity composition in the full W divertor (4 sessions)

  • Ex-2.2.2 W screening, peaking and control(5 sessions)

  • Ex-3.2.5 Effect of SOL transport, pedestal and ELMs on impurity transport(C30)

Category 2

  • Ex-2.1.6 Characterisation of ICRF heating with the ILW

  • Ex-2.2.4 Impurity seeding in preparation for ITER

  • Ex-1.1.7 Divertor W erosion and ELM induced sputtering

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


Parasitic experiments for impurity transport investigations

Parasitic experiments for impurity transport investigations

Parasitic

  • Px-2.1.3 Control of impurities accumulation during current rise in diverted plasmas


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