An overview of erosion-deposition studies for the JET Mk II high delta divertor

被引：20

作者：

Widdowson, A. ^{[1
]}

Brezinsek, S. ^{[2
]}

Coad, J. P. ^{[1
]}

Hole, D. E. ^{[3
]}

Likonen, J. ^{[4
]}

Philipps, V. ^{[2
]}

Rubel, M. ^{[5
]}

Stamp, M. F. ^{[1
]}

机构：

[1] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Forschungszentrum Julich GmbH, EURATOM Assoc, IEF Plasma Phys 4, Inst Energy Res, D-52425 Julich, Germany

[3] Univ Sussex, Dept Engn & Design, Brighton BN1 9QH, E Sussex, England

[4] VTT, Assoc EURATOM Tekes, FI-02044 Espoo, Finland

[5] Royal Inst Technol, Assoc EURATOM VR, S-10044 Stockholm, Sweden

[6] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

PHYSICA SCRIPTA | 2009年 / T138卷

基金：

英国工程与自然科学研究理事会;

关键词：

EROSION/DEPOSITION;

D O I：

10.1088/0031-8949/2009/T138/014005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Post-mortem analyses of tiles removed from the JET MkII HD divertor in 2007 are presented. The results indicate an increase in deposition at the outer plasma-shadowed region of the divertor, not seen prior to 2004 and indicate a shift away from the asymmetric picture of net deposition at the inner divertor compared with no overall deposition or erosion at the outer divertor. Surface analysis of the inner and outer vertical divertor tiles is largely the same as observed previously; however, a notable increase in Be composition on the inner and outer floor tiles is observed. An attempt has been made to correlate these data with campaign-averaged plasma configurations and spectroscopy results. While some changes in deposition/erosion characteristics can be explained, further detailed analysis of diagnostics and especially of time-resolved data, such as from rotating collector and quartz microbalance diagnostics, is required.

引用

页数：8

共 12 条

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Fundamenski, W.
Philipps, V.
Pitts, R. A.
Widdowson, A.
[J]. PHYSICAL REVIEW LETTERS, 2009, 102 (04)

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