K. Krieger, SEWG Meeting on Material Migration and ITER Material Mix, JET, 07.07.2009...

K. Krieger, SEWG Meeting on Material Migration and ITER Material Mix, JET, 07.07.2009

Max-Planck-Institutfür Plasmaphysik

Carbon local transport and redeposition -Results from 13C gas puffing

in the outer divertor of ASDEX Upgrade

K. Krieger, L. Aho-Mantila, M. Airila, A. Hakola, R. Pugno

Association EURATOM Max-Planck Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany

Outline

Analysis methods

2007 #22573-22585 L-mode D2, -2.5T, 0.8MA

2008 #23646-23654 L-mode H2, 2.5T, -0.8MA

2008 #24183-24189 L-mode D2, -2.5T, 0.8MA

Modelling using B2/EIRENE + ERO

Puff trace amounts of 13CD4 in series of similar discharges and

measure local 13C deposition 2D-distribution at retrieved tiles.

Benchmark data for ERO and for spectroscopic CD flux measurements.

Example: 13CH4 local injection in ASDEX Upgrade

Quantitative analysis of low-Z element deposition

SIMS: Allows to derive depth profilesDifficult to obtain absolute calibration and depth scale

NRA: Allows to derive total amountDifficult to obtain depth profiles

Colorimetry: Allows to derive lateral distribution with high resolutionOnly possible for transparent layers with uniformoptical constantsNo isotope sensitivity

NRA of low-Z elements: D, 10B, 11B, 12C, 13C, 16O

Outline

Analysis methods

2007 #22573-22585 L-mode D2, -2.5T, 0.8MA

2008 #23646-23654 L-mode H2, 2.5T, -0.8MA

2008 #24183-24189 L-mode D2, -2.5T, 0.8MA

Configuration and plasma parameters

11 L-mode discharges

13CH4 puff 1.6−4.6 s

2 Valves

Tiles after exposure

NRA results

Total injected 13CH4 molecules = 1.2×1020 (upper) = 2.0×1020 (lower)

Total deposited 13C integrated over tiles = 1.1×1020 (upper) = 1.8×1020 (lower)

NRA results

100% local redeposition different toroidal decay lengths upstream/downstream, upper/lower valve downward poloidal shift 40% of injected 13C deposited upstream

Outline

Analysis methods

2007 #22573-22585 L-mode D2, -2.5T, 0.8MA

2008 #23646-23654 L-mode H2, 2.5T, -0.8MA

2008 #24183-24189 L-mode D2, -2.5T, 0.8MA

3 L-mode discharges

13CH4 puff 1.6−4.3 s

2 Valves

Reversed Bt, Ip

Tile after exposure

NRA results

Total injected 13CH4 molecules = ?

Total deposited 13C integrated over tiles = 1.0×1019

Cancellation / reversal ofdeposition shift atB-field reversal

Shift due to ExB drift

Outline

Analysis methods

2007 #22573-22585 L-mode D2, -2.5T, 0.8MA

2008 #23646-23654 L-mode H2, 2.5T, -0.8MA

2008 #24183-24189 L-mode D2, -2.5T, 0.8MA

4 L-mode discharges (ECRH)

13CH4 puff 1.6−4.3 s

Only upper Valve

Tiles after exposure

NRA results

Total injected 13CH4 molecules = ?

Total deposited 13C integrated over tiles = 0.5×1019

Outline

Analysis methods

2007 #22573-22585 L-mode D2, -2.5T, 0.8MA

2008 #23646-23654 L-mode H2, 2.5T, -0.8MA

2008 #24183-24189 L-mode D2, -2.5T, 0.8MA

Modelling of 2007 results using ERO

B2-EIRENE plasma solutionas background for ERO

ERO runs in a box limitedby the vertical target plate

Impurities exiting box areconsidered lost

L. Aho-Mantila

Modelling of 2007 results using ERO

ERO recreates both E×B drift andupstream deposition due toneutral dissociation products

L. Aho-Mantila

Summary

Data sets available for H-mode, L-mode, L-mode with reversed B-field

Present status: benchmarking 2007 data has made significantprogress

Open questions: sticking coefficients at present only used asfudge parameters. What is the role of surface roughness?(Microscopic deposition asymmetries observed)

Benchmarking the same system with 2008 results.If successful, will it also predict the TEXTOR measurements using theSAME input parameters?

K. Krieger, SEWG Meeting on Material Migration and ITER Material Mix, JET, 07.07.2009...

Documents

Transcript of K. Krieger, SEWG Meeting on Material Migration and ITER Material Mix, JET, 07.07.2009...

© Jennifer Schillings 07.07.2009 Teamfähigkeit Univ.-Prof. Dr. Hermann Hill Sommersemester 2009 DHV Speyer Schlüsselqualifikationen und Metakompetenzen.

Greying Testing - wfk Testgewebe GmbH · Greying Testing Accelerated redeposition testing: ... wfk Greying Swatch for accelerated redeposition testing. We also presented ﬁrst results

SEWG MEETING, Cadarache, June 16th 2009 1/18 Experimental studies on laser induced removal and collection for absorbing particles A.Vatry 1,2, A. Marchand.

Erosion/redeposition analysis of CMOD Molybdenum divertor and NSTX Liquid Lithium Divertor J.N. Brooks, J.P. Allain Purdue University PFC Meeting MIT,

5 th CWGM, 07.07.2009, A. Werner-1- Data Access WebService for W7-AS S. Jakob, T. Bluhm, A. Werner.

Report on SEWG mixed materials EU PWI TF meeting Madrid 2007 V. Philipps on behalf of SEWG members Mixed material formation is a among the critical ITER.

Nodal Program Update and SEWG Update COPS 5/10/2011 Jim Galvin.

ТРЕНИНГ ПО ТОВАРАМ МАГАЗИНА · БЫТОВАЯ ХИМИЯ Safe For you, Friendly To The Environment Concentrated Powder Detergent • Anti-redeposition •

Annual High-Z /Metal PFC SEWG Meeting, Ljubljana 1-2 October 2009 Studies of Plasma-Wall Interactions Post mortem characterization of exposed tungsten.

Vodafone Germany - Mobile Internet Event 07.07.2009

Guide Utilisateur Gamme Prem’Habitat Gestion des …...© Aareon 2009 page 2 de 15 document : Guide_Gestion_DI_PremHabitat.docx enregistré le 07.07.2009 emplacement : C:\Guide_Gestion_DI_PremHabitat.docx

1 EFFECTS OF CARBON REDEPOSITION ON TUNGSTEN UNDER HIGH-FLUX, LOW ENERGY Ar ION IRRADITAION AT ELEVATED TEMPERATURE Lithuanian Energy Institute, Lithuania.

CCSM Software Engineering Coordination Plan Tony Craig SEWG Meeting Feb 14-15, 2002 NCAR.

R.Zagórski, SEWG Meeting, Culham, July 2008 1 New EFDA and PWI Work Programme R.Zagórski EFDA CSU Garching Acknowledgements: J.Pamela, J.Roth, E.Tsitrone.

Institut für Energieforschung - Plasmaphysik EURATOM Assoziation – FZJ TEC A. Litnovsky et al., Meeting of the EU TF PWI SEWG on mixed materials, JET,

EU PWI Task Force V. Philipps, SEWG mixed materials, 21.6.06 JET ITER-like Wall Project : Material choice, issues to investigate and role of new SEWG ITER-like.

Nodal Program Update and SEWG Update COPS 1/11/2011 Jim Galvin.

M. Reinelt, K. Schmid, K. Krieger SEWG High-Z Ljubljana 01.10.2009 Max-Planck-Institut für Plasmaphysik EURATOM Association, Garching b. München, Germany.

SEWG Workplan Facilitation and Modelling Project … · SEWG Workplan Facilitation and Modelling Project Spatial Modelling Database Guide Prepared by: Barry Wilson, with contributions

KIT - Die Kooperation von Forschungszentrum Karlsruhe GmbH und Universität Karlsruhe (TH) 1 EFDA SEWG meeting, Ljubjana 1-2 Oct 2009 I.S. Landman Modelling.