Hannover 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
P: Fachverband Plasmaphysik
P 5: Poster Session 1
P 5.24: Poster
Montag, 9. März 2020, 16:30–18:30, Empore Lichthof
Preliminary investigation of the island divertor configuration by applying 4/1 RMP on the J-TEXT tokamak — •song zhou1,2, yunfeng liang1,2,3, nengchao wang2, bo rao2, yonghua ding2, and the j-text team2 — 1Institute of Energy and Climate Research, Plasma Physics IEK-4, Forschungszentrum Juelich GmbH, Juelich, Germany — 2International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, Huazhong University of Science and Technology, Wuhan, China — 3Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, China
The high heat load on divertor target plate is one of the essential issues for future fusion reactors. The island divertor configuration is a good way to reduce the peaking heat load on the target and also screen the impurity, which is proposed first in 1977 for tokamak but successfully established in various stellarators. In the last campaign of J-TEXT tokamak, an experimental attempt have been made to form an island divertor configuration by using the external resonant magnetic perturbation (RMP) with dominate m/n = 4/1 component. Once the 4/1 locked island has been excited, the radial and poloidal profiles of the floating potential, the intensity of CIII radiation varied significantly. The poloidal profiles of the floating potential measured at the limiters, varied during the formation of 4/1 locked island, indicating the impact of the 4/1 island on the footprints. However, the present RMP is not enough strong to excite a wider edge island, i.e. the width of island is smaller than the critical size. The preliminary design for building a new set of island divertor coils will also be discussed.