This title appears in the Scientific Report : 2005 

The effect of field reversal on the JET MkII GB Divertor performance in L-mode density limit discharges
Huber, A.
Rapp, J. / Andrew, P. / Coad, P. / Corrigan, G. / Erants, K. / Fundamenski, W. / Ingesson, L. C. / Jachmich, S. / Korotkov, J. M. / Matthews, G. F. / Mertens, Ph. / Philipps, V. / Pitts, R. / Schweer, B. / Sergienko, G. / Stamp, M.
Institut für Plasmaphysik; IPP
Journal of nuclear materials, 337-339 (2005) S. 241 - 245
Amsterdam [u.a.] Elsevier Science 2005
241 - 245
10.1016/j.jnucmat.2004.10.123
Journal Article
Kernfusion und Plasmaforschung
Journal of Nuclear Materials 337-339
J
Please use the identifier: http://dx.doi.org/10.1016/j.jnucmat.2004.10.123 in citations.
The effect of field reversal on the JET MkIIGB-SRP divertor performance has been investigated in L-mode density limit discharges. These experiments show that the direction of the magnetic field has a substantial effect on divertor physics, modifying the character of detachment and density limits. Reversal of the ion del B-drift direction away from the X-point results in a reduction of the density limit of about 15%. In contrast to forward field direction, the divertor parameters such as density and temperature as well as divertor radiation distribution and power at the divertor target become more symmetrical in the discharges with reversed field. The influence of different field configurations on the divertor performance has been analysed with respect to the dependence on density and heating power. The experimental observations of out-in asymmetry in target power as well as in the CIII-emission distribution is consistent with EDGE2D simulations, which include the effect of drifts. (c) 2004 Elsevier B.V. All rights reserved.