Method for comparison of tokamak divertor strike point data with magnetic perturbation models

0435332 - ÚFP 2015 RIV AT eng J - Journal Article
Cahyna, Pavel - Peterka, Matěj - Nardon, E. - Frerichs, H. - Pánek, Radomír
Method for comparison of tokamak divertor strike point data with magnetic perturbation models.
Nuclear Fusion. Roč. 54, č. 6 (2014), 064002-064002. ISSN 0029-5515. E-ISSN 1741-4326.
[International Workshop on Stochasticity in Fusion Plasmas /6./. Jülich, 18.03.2013-20.03.2013]
R&D Projects: GA ČR GAP205/11/2341
Institutional support: RVO:61389021
Keywords : divertor * resonant magnetic perturbation
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 3.062, year: 2014
http://iopscience.iop.org/0029-5515/54/6/064002/pdf/0029-5515_54_6_064002.pdf

Resonant magnetic perturbations (RMPs) used to control type-I edge-localized modes produce a splitting of the peaks of heat flux profile on the divertor. The additional peaks can appear outside the areas connected to the plasma core by the perturbed field lines due to perpendicular transport. This effect has been studied so far using demanding three-dimensional transport simulations. We present a simple method to quantitatively estimate the heat flux profile that the RMP will produce on the divertor. The method needs only field line tracing to determine the so-called tangle distance function, and knowledge of the heat flux profile on the unperturbed heat flux profile. We find good agreement between this method and a transport simulation.
Permanent Link: http://hdl.handle.net/11104/0239224