|Title||Overview of experimental preparation for the ITER-Like Wall at JET|
|Publication Type||Journal Article|
|Year of Publication||2011|
|Authors||S. Brezinsek, W. Fundamenski, T. Eich, J.P Coad, C. Giroud, A. Huber, S. Jachmich, E. Joffrin, K. Krieger, K. McCormick, M. Lehnen, T. Loarer, E. de la Luna, G. Maddison, G.F Matthews, P. Mertens, I. Nunes, V. Philipps, V. Riccardo, M. Rubel, M.F Stamp, M. Tsalas|
|Journal||Journal of Nuclear Materials|
|Type of Article||Article; Proceedings Paper|
|Keywords||divertor, PROJECT, Tungsten|
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.
|Alternate Title||J. Nucl. Mater.|
Go back one page.