ELM induced divertor heat loads on TCV

0326550 - ÚFP 2010 RIV NL eng J - Journal Article
Marki, J. - Pitts, R. A. - Horáček, Jan - Tskhakaya, D. - TCV, team.
ELM induced divertor heat loads on TCV.
[Tepelný tok na divertor tokamaku TCV během ELMů.]
Journal of Nuclear Materials. 309-391, - (2009), s. 801-805. ISSN 0022-3115. E-ISSN 1873-4820.
[International Conference on Plasma-Surface Interactions in Controlled Fusion Devices/18th./. Toledo, 26.05.2008-30.5.2008]
Institutional research plan: CEZ:AV0Z20430508
Keywords : Tokamak TCV * divertor heat load * ELM * EVOLUTION * JET
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.933, year: 2009
http://dx.doi.org/10.1016/j.jnucmat.2009.01.212

Fast infrared (IR) camera was used on the TCV tokamak to study energy deposition on the outer divertor target. THEODOR code was used to derive the heat flux from the IR surface temperature data in the presence of co-deposited layers. We observe that ELMs are composed of filaments with toroidal mode number between 5 and 15. Although not an ELM phenomena, an observation of strike point splitting in extremely low density L-mode plasmas will also be presented, believed to be due to field line ergodisation, probably due to mode activity.

Užitím rychlé infračervené kamery jsme studovali depozici tepla na vnější divertorové desce tokamaku TCV. Z tohoto 2D rozložení teploty jsme počítačovým modelem Theodor zrekonstruovali tepelný tok. Pozorovali jsme, že ELMy jsou opravdu tvořeny 5-15 filamenty. Navíc, pozorovali jsme zajímavé rozštěpení separatrix na divertoru pro velmi řídké plazma, pravděpodobně díky ergodizaci magnetické siločáry.
Permanent Link: http://hdl.handle.net/11104/0173623