Nonlinear Impact of Edge Localized Modes on Carbon Erosion in the Divertor of the JET Tokamak

被引：27

作者：

Kreter, A. ^{[1
]}

Esser, H. G. ^{[1
]}

Brezinsek, S. ^{[1
]}

Coad, J. P. ^{[2
]}

Kirschner, A. ^{[1
]}

Fundamenski, W. ^{[2
]}

Philipps, V. ^{[1
]}

Pitts, R. A. ^{[3
]}

Widdowson, A. ^{[2
]}

机构：

[1] Assoc EURATOM FZJ, Forschungszentrum Julich, Inst Energieforsch Plasmaphys, Trilateral Euregio Clust, Germany

[2] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon, Oxon, England

[3] Ecole Polytech Fed Lausanne, EURATOM Assoc, CRPP, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

ENERGY; ELMS; ITER; TRANSPORT; LOSSES;

D O I：

10.1103/PhysRevLett.102.045007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The impact of edge localized modes (ELMs) carrying energies of up to 450 kJ on carbon erosion in the JET inner divertor is assessed by means of time resolved measurements using an in situ quartz microbalance diagnostic. The inner target erosion is strongly nonlinearly dependent on the ELM energy: a single 400 kJ ELM produces the same carbon erosion as ten 150 kJ events. The ELM-induced enhanced erosion is attributed to the presence of codeposited carbon-deuterium layers on the inner divertor target, which are thermally decomposed under the impact of ELMs.

引用

页数：4

共 24 条

[1] Identification of molecular carbon sources in the JET divertor by means of emission spectroscopy [J].

Brezinsek, S ;

Pospieszczyk, A ;

Stamp, MF ;

Meigs, A ;

Kirschner, A ;

Huber, A ;

Mertens, P .

JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) :1058-1063

[2] Advances in the modeling of chemical erosion/redeposition of carbon divertors and application to the JET tritium codeposition problem [J].

Brooks, JN ;

Kirschner, A ;

Whyte, DG ;

Ruzic, DN ;

Alman, DA .

JOURNAL OF NUCLEAR MATERIALS, 2003, 313 :424-428

[3] Carbon deposition and hydrogen isotope retention in JET [J].

Coad, JP ;

Andrew, PL ;

Peacock, AT .

PHYSICA SCRIPTA, 1999, T81 :7-12

[4]

Eckstein W., 1996, PHYS PROCESSES INTER, P93

[5] ELM resolved energy distribution studies in the JET MKII Gas-Box divertor using infra-red thermography [J].

Eich, T. ;

Andrew, P. ;

Herrmann, A. ;

Fundamenski, W. ;

Loarte, A. ;

Pitts, R. A. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2007, 49 (05) :573-604

[6] Effect of plasma configuration on carbon migration measured in the inner divertor of JET using quartz microbalance [J].

Esser, HG ;

Philipps, V ;

Freisinger, M ;

Matthews, GF ;

Coad, JP ;

Neill, GF .

JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) :84-88

[7] Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary [J].

Evans, TE ;

Moyer, RA ;

Thomas, PR ;

Watkins, JG ;

Osborne, TH ;

Boedo, JA ;

Doyle, EJ ;

Fenstermacher, ME ;

Finken, KH ;

Groebner, RJ ;

Groth, M ;

Harris, JH ;

La Haye, RJ ;

Lasnier, CJ ;

Masuzaki, S ;

Ohyabu, N ;

Pretty, DG ;

Rhodes, TL ;

Reimerdes, H ;

Rudakov, DL ;

Schaffer, MJ ;

Wang, G ;

Zeng, L .

PHYSICAL REVIEW LETTERS, 2004, 92 (23) :235003-1

[8] Assessment of erosion of the ITER divertor targets during type I ELMs [J].

Federici, G ;

Loarte, A ;

Strohmayer, G .

PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (09) :1523-1547

[9] D-T experiments in the JET Tokamak [J].

Keilhacker, M ;

Watkins, ML .

JOURNAL OF NUCLEAR MATERIALS, 1999, 266 :1-13

[10] Hydrocarbon transport in the MkIIa divertor of JET [J].

Kirschner, A ;

Brooks, JN ;

Philipps, V ;

Coad, JP .

PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (03) :309-319

← 1 2 3 →