Detailed Particle and Power Fluxes Into ITER Castellated Divertor Gaps During ELMs

0355694 - ÚFP 2011 RIV US eng J - Journal Article
Dejarnac, Renaud - Komm, M. - Tskhakaya, D. - Gunn, J. P. - Pekarek, Z.
Detailed Particle and Power Fluxes Into ITER Castellated Divertor Gaps During ELMs.
IEEE Transactions on Plasma Science. Roč. 38, č. 4 (2010), s. 1042-1046. ISSN 0093-3813. E-ISSN 1939-9375
Institutional research plan: CEZ:AV0Z20430508
Keywords : Edge modeling * Ion-surface interactions * ITER * Sheaths
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.070, year: 2010

We have performed kinetic calculations of plasma deposition in narrow gaps between tiles of ITER plasma facing components during ELMs. We simulate an equal mixture of deuterium and tritium for the main plasma and one impurity, carbon. The aim of this study is to know whether the carbon can enter the narrow gaps between tiles and with which energy. Due to its radioactivity, the tritium deposition is also of high interest. The global penetration of the two hydrogen species into the gap is in the order of the gap width (~0.5 mm) and their own contribution on the total heat flux to the gap is estimated. The main impurity penetrates into the gap in between 50 to 70% of the total plasma deposition in the gap but with a power deposited representing less than 1% of the total deposited power.
Permanent Link: http://hdl.handle.net/11104/0194404