|Title||Carbon transport in the stochastic magnetic boundary of TEXTOR|
|Publication Type||Conference Proceedings|
|Year of Publication||2009|
|Authors||G. Telesca, E. Delabie, O. Schmitz, S. Brezinsek, K.H. Finken, M. von Hellermann, M. Jakubowski, M. Lehnen, Y. Liang, A. Pospieszczyk, U. Samm, M. Tokar, B. Unterberg, G. Van Oost|
|Publisher||Elsevier Science Bv|
For given conditions, significant change in main particle and carbon transport is observed in TEXTOR under the action of the Dynamic Ergodic Divertor, DED, operating both in 6/2 and 3/1 basic modes. In particular, the stochastic layer created at the plasma edge by the applied perturbing field, is responsible for the so called pump out, PO, effect (observed in DIII-D and on JET during experiments of ELM mitigation) characterized by a decrease in the plasma density and the reduction in the intrinsic carbon concentration in the plasma core. For a sufficiently high value of the applied field strength, in DED 3/1 basic operational mode a 3/1 island connects to the wall, with related further enhancement of particle transport. With respect to carbon, this phenomenon simply leads to a further carbon de-contamination from the central plasma. (C) 2009 Elsevier B.V. All rights reserved.
|URL||<Go to ISI>://000267747300053|
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