32 citations · 110 across the 11 of their papers we have counts for
13 papers
Frequency-inference method for reduced modeling of energetic particle modes (EPM) utilizing resonant auto-optimization remnants of imperfect time-scale separation
Andreas Bierwage, Vinícius N. Duarte, Pablo Oyola +2
Integrated codes simulating interactions between Alfvén waves and fast ions in tokamak plasmas use perturbative models for the relatively slow processes of instability growth, satu…
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 f…
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 Alfvénic…
Helical Core Formation and MHD Stability in ITER-Scale Plasmas with Fusion-born Alpha Particles
P. Adulsiriswad, A. Bierwage, M. Yagi
The effect of fusion-born alpha particles on the helical core (HC), a long-lived ideal saturation state of the kink/quasi-interchange mode, is studied in the ITER-scale h…
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…
Testing the conservative character of particle simulations: II. Spurious heating of guiding centers and full orbits subject to fluctuations expressed in terms of and
Andreas Bierwage, Kouji Shinohara
For an axisymmetric tokamak plasma, Hamiltonian theory predicts that the orbits of charged particles must stay on invariant tori of conserved energy in the moving frame of referenc…