Overview of experimental preparation for the ITER-Like Wall at JET

被引:32
作者
Brezinsek, S. [1 ]
Fundamenski, W. [2 ]
Eich, T. [3 ]
Coad, J. P. [2 ]
Giroud, C. [2 ]
Huber, A. [2 ]
Jachmich, S.
Joffrin, E. [2 ]
Krieger, K. [3 ]
McCormick, K. [3 ]
Lehnen, M. [2 ]
Loarer, T. [4 ]
de la Luna, E. [5 ]
Maddison, G. [2 ]
Matthews, G. F. [2 ]
Mertens, Ph. [2 ]
Nunes, I. [6 ]
Philipps, V. [2 ]
Riccardo, V. [2 ]
Rubel, M. [7 ]
Stamp, M. F. [2 ]
Tsalas, M. [8 ]
机构
[1] Forschungszentrum Julich, Inst Energieforsch Plasmaphys, Assoc EURATOM FZJ, TEC, D-52425 Julich, Germany
[2] Culham Ctr Fus Energy, Abingdon OX14 3DB, Oxon, England
[3] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany
[4] CEA Cadarache, EURATOM Assoc, CEA, F-13108 St Paul Les Durance, France
[5] CIEMAT, EURATOM Assoc, Lab Nacl Fus, E-28040 Madrid, Spain
[6] Assoc EURATOM IST, Inst Plasmas & Fusao Nucl, Lisbon, Portugal
[7] Assoc EURATOM VR, Royal Inst Technol, Alfven Lab, Stockholm, Sweden
[8] NCSR Demokritos, Assoc EURATOM Hellen Republ, Attica 15310, Greece
关键词
TUNGSTEN;
D O I
10.1016/j.jnucmat.2010.10.037
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Experiments in JET with carbon-based plasma-facing components have been carried out in preparation of the ITER-Like Wall with beryllium main chamber and full tungsten divertor. The preparatory work was twofold: (i) development of techniques, which ensure safe operation with the new wall and (ii) provision of reference plasmas, which allow a comparison of operation with carbon and metallic wall. (i) Compatibility with the W divertor with respect to energy loads could be achieved in N-2 seeded plasmas at high densities and low temperatures, finally approaching partial detachment, with only moderate confinement reduction of 10%. Strike-point sweeping increases the operational space further by re-distributing the load over several components. (ii) Be and C migration to the divertor has been documented with spectroscopy and QMBs under different plasma conditions providing a database which will allow a comparison of the material transport to remote areas with metallic walls. Fuel retention rates of 1.0-2.0 x 10(21) D s(-1) were obtained as references in accompanied gas balance studies. (C) 2010 Published by Elsevier B.V.
引用
收藏
页码:S936 / S942
页数:7
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