ICRF Heating in JET During Initial Operations with the ITER-Like Wall

0435786 - ÚFP 2015 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Jacquet, P. - Bobkov, V. - Brezinsek, S. - Brix, M. - Campergue, A.-L. - Colas, L. - Czarnecka, A. - Drewelow, P. - Graham, M. - Klepper, C.C. - Lerche, E. - Mayoral, M.-L. - Meigs, A. - Milanesio, D. - Monakhov, I. - Mlynář, Jan - Pütterich, T. - Sirinelli, A. - Van-Eester, D. … celkem 20 autorů
ICRF Heating in JET During Initial Operations with the ITER-Like Wall.
AIP Conference Proceedings. Vol. 1580. Melville: American Institute of Physics, 2014, s. 65-72. AIP Publishing, 1580. ISBN 978-0-7354-1210-1. ISSN 0094-243X.
[Topical conference on radio frequency power in plasmas/20./. Sorrento (IT), 25.06.2013-28.06.2013]
Institucionální podpora: RVO:61389021
Klíčová slova: Tokamak * JET * ICRF
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://scitation.aip.org/content/aip/proceeding/aipcp/10.1063/1.4864503

The impact of the new wall material on the JET Ion Cyclotron Resonance Frequency (ICRF) operation was assessed and also the properties of JET plasmas heated with ICRF were studied. No substantial change of the antenna coupling resistance was observed with the ILW as compared with the carbon wall. Heat-fluxes on the protecting limiters close the antennas quantified using Infra-Red (IR) thermography (maximum 4.5 MW/m(2) in current drive phasing) are within the wall power load handling capabilities. A simple RF sheath rectification model using the antenna near-fields calculated with the TOPICA code can well reproduce the heat-flux pattern around the antennas. ICRF heating results in larger tungsten and nickel (Ni) contents in the plasma and in a larger core radiation when compared to Neutral Beam Injection (NET) heating.
Trvalý link: http://hdl.handle.net/11104/0239596