1E. Tsitrone PWI TF meeting 13-15/11/2006

EuratomITER divertor statusAnnual ITER divertor meeting (4-6 october 2006, St Petersbourg)

• Memorandum of undestanding on the procurement of ITER divertor : agreed by parties july 2006« Divertor procurement plan » : final issue end of november 2006, binding for ITER and parties

• Divertor : 54 cassettes (32 « standard »)

• Procurement sharing :EU : cassette body + integration

inner divertorJA : outer divertor RU : dome

high heat fluxes+ full scale prototypes

• Prequalification :Each party : 2 QPs at least (more if they wish)At least 2 QPs acceptance criteria, at least 1 HHF testing

Delegations : ITER IT : 10 EU : 19 RU : 21 (3/4 Efremov) JA : 1

Slides available upon request : Contact M. Merola

2E. Tsitrone PWI TF meeting 13-15/11/2006

Euratom

•Signature of the Task Agreement for the prequalification: December 2006

•Set-up of Working Groups for Procurement Specifications: November 2007

•Deadline for delivery of all the QPs: July-2008

•Deadline for completion of HHF testing: December-2008

•Signature of Procurement Arrangements: February-2009

•Call for Tender for the ITER divertor PFCs: early-2009

•Start of procurement contract for PFCs: mid-2009

+ Delivery on site – assembly (PFCs + diags) - tests : 2013-2016

Schedule until start of procurement (M. Merola)

3E. Tsitrone PWI TF meeting 13-15/11/2006

EuratomExecutive summary (extracts)

H phase (2 years) : very marginal for H mode (70 MW installed)• Plasma formation, X point control• Radiative plasma scenario (up to 15 MW/m2 on divertor otherwise)• Divertor protection systems, disruptions (enough for melting ?)• Material strategy : if retention too high full W divertor : alternative set of PFCs ? Corresponding diagnostics necessary !

Diagnostics• Still at very early conceptual phase• Intense effort required by IO + PTs (finalize design mid 2008 for call for tender 2009)• Critical path : priority

CFC • EU reference NB31 not available anymore• 7 alternative grades (NB41 from SNECMA, Dunlop)• Plansee : test all materials, Ansaldo : test 4 materials

My (very personnal) comments :• Planning « optimistic » (diags, tests with new CFC, a-CH filter, design review …)• Coordination with first wall (diags) ? • More interaction needed with tokamak people (building / running experience)• Meeting PWI TF with Holtkamp planned early december

4E. Tsitrone PWI TF meeting 13-15/11/2006

EuratomITER divertor status

5E. Tsitrone PWI TF meeting 13-15/11/2006

EuratomQualification Prototypes (QPs)

VT Full-monoblock option

VT CFC-monoblock, W flat tile option

Dome

6E. Tsitrone PWI TF meeting 13-15/11/2006

EuratomProposed materials (in no particular order)

SNECMA

NB31 CVD/Pitch impreg. 3D/u Needled Tonnes

N31 CVD 3D/u Needled 100 kgs

N11 CVD 3D Needled 100 kgs

NB41 CVD/Pitch impreg 3D/u Needled 10 kgs

Dunlop

DMS780 CVD 2D Tonnes

NEW CVD 3D/u Needled 10 kgs

CLC

A412F CVD 3D Needled 100 kgs

SGL

NEW CVD 3D Woven 10 kgs