Extension of ELM suppression window using n=4 RMPs in EAST

Extension of ELM suppression window using n=4 RMPs in EAST

The q95 window for Type-I Edge Localized Modes (ELMs) suppression using n=4 even parity Resonant Magnetic Perturbations (RMPs) has been significantly expanded to a range from 3.9 to 4.8, which is demonstrated to be reliable and repeatable in EAST over the last two years. This window is significantly...

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Veröffentlicht in:arXiv.org 2023-04
Hauptverfasser: Xie, P, Sun, Y, Q Ma, S Gu, Liu, Y Q, Jia, M, Loarte, A, X Wu, Chang, Y, Jia, T, Zhang, T, Zhou, Z, Zang, Q, Lyu, B, S Fu, Sheng, H, C Ye, Yang, H, Wang, H H, EAST Contributors
Format: Artikel
Sprache:eng
Schlagworte:
Internal energy
Magnetic flux
Modelling
Parity
Perturbation
Plasma
Safety factors
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Zusammenfassung:The q95 window for Type-I Edge Localized Modes (ELMs) suppression using n=4 even parity Resonant Magnetic Perturbations (RMPs) has been significantly expanded to a range from 3.9 to 4.8, which is demonstrated to be reliable and repeatable in EAST over the last two years. This window is significantly wider than the previous one, which is around q95=3.7pm0.1, and is achieved using n=4 odd parity RMPs. Here, n represents the toroidal mode number of the applied RMPs and q95 is the safety factor at the 95% normalized poloidal magnetic flux. During ELM suppression, there is only a slight drop in the stored energy (
ISSN:2331-8422