Validation of equilibrium tools on the COMPASS tokamak

0440273 - ÚFP 2015 ES eng A - Abstrakt
Urban, Jakub - Appel, L.C. - Artaud, J.F. - Faugeras, B. - Havlíček, Josef - Komm, Michael - Lupelli, I. - Peterka, Matěj
Validation of equilibrium tools on the COMPASS tokamak.
Book of Abstracts:Symposium on Fusion Technology (SOFT 2014). San Sebastián: JEMA Irizar Group, 2014. s. 314.
[Twenty-Eighth Symposium on Fusion Technology (SOFT 2014). 29.09.2014-03.10.2014, San Sebastián]
Grant CEP: GA ČR GP13-38121P
Klíčová slova: tokamak * equilibrium * COMPASS * reconstruction
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://www.soft2014.eu/img/posters.pdf

Various MHD equilibrium tools, some of which being recently developed or considerably updated, are used on the COMPASS tokamak at IPP Prague. MHD equilibrium is a fundamental property of the tokamak plasma, whose knowledge is required for many diagnostics and modelling tools. Proper benchmarking and validation of equilibrium tools is thus key for interpreting and planning tokamak experiments. We present here benchmarks and comparisons to experimental data of the EFIT++ reconstruction code, the free-boundary equilibrium code FREEBIE, and a rapid plasma boundary reconstruction code VacTH. We demonstrate that FREEBIE can calculate the equilibrium and corresponding poloidal field (PF) coils currents consistently with EFIT++ reconstructions from experimental data. Both EFIT++ and VacTH can reconstruct equilibria generated by FREEBIE from synthetic, optionally noisy diagnostic data. Hence, VacTH is suitable for real-time control. Optimum reconstruction parameters are estimated.
Trvalý link: http://hdl.handle.net/11104/0243389