5 papers · 1 filter
Study of Low-Frequency Core-Edge Coupling in a Tokamak: I. Experimental Observation in KSTAR
Wonjun Lee, Andreas Bierwage, Seungmin Bong +6
Double-peaked fishbone events across multiple KSTAR discharges are investigated. The normalized beta and the edge safety factor under which the…
Study of Low-Frequency Core-Edge Coupling in a Tokamak: II. Spatial Channeling & Focusing In Antenna-Driven MHD
Andreas Bierwage, Wonjun Lee, Young-chul Ghim +7
Motivated by evidence for core-edge coupling in the form of double-peaked fishbone-like low-frequency modes () in KSTAR, which exhibit synchronized Alfvéni…
Bright Spot Characterization of Low dI/dt X-pinch Plasmas using Soft X-ray Spectroscopy with Bennett Relation
YeongHwan Choi, Muhyeop Cha, Hakmin Lee +8
This study investigates the characteristics of X-pinch plasmas driven under low current rise rate () conditions using soft x-ray spectroscopy combined with the Bennett relat…
Construction and analysis of guiding center distributions for tokamak plasmas with ambient radial electric field
Andreas Bierwage, Philipp Lauber, Noriyoshi Nakajima +8
The contribution of a time-independent toroidally-symmetric radial electric field is implemented in VisualStart [Comp. Phys. Comm. 275 (2022) 108305; arXiv:2111.08224], a cod…
Will shifted and truncated Maxwellian EVDF near the wall exhibit different electron currents?
Yegeon Lim, Young-chul Ghim
Experiments to explore the predicted consequences on the I-V characteristics of a Langmuir probe based on the fluid approach for electrons and the electron Bohm criterion are condu…