T
Torkil H. Jensen
Researcher at General Atomics
Publications - 51
Citations - 1620
Torkil H. Jensen is an academic researcher from General Atomics. The author has contributed to research in topics: Tokamak & Plasma. The author has an hindex of 20, co-authored 51 publications receiving 1589 citations.
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Journal ArticleDOI
Effect of toroidal plasma flow and flow shear on global magnetohydrodynamic MHD modes
Ming-Sheng Chu,J. M. Greene,Torkil H. Jensen,R. L. Miller,Anders Bondeson,R.W. | Johnson,Michael E. Mauel +6 more
TL;DR: In this paper, the effect of toroidal flow on the linear magnetohydrodynamic stability of a tokamak plasma surrounded by an external resistive wall was studied, and a complex non-self-adjoint eigenvalue problem for the stability of general kink and tearing modes was formulated, solved numerically, and applied to high β-tokamaks.
Journal ArticleDOI
Sustained rotational stabilization of DIII-D plasmas above the no-wall beta limit
Am Garofalo,Torkil H. Jensen,L. C. Johnson,R.J. La Haye,Gerald Navratil,M. Okabayashi,J. T. Scoville,E. J. Strait,D.R. Baker,J.M. Bialek,Ming-Sheng Chu,J.R. Ferron,J. Jayakumar,L.L. Lao,M. A. Makowski,H. Reimerdes,T. S. Taylor,A. D. Turnbull,M. R. Wade,S. K. Wong +19 more
TL;DR: In this paper, the authors demonstrated that a resonant response to error fields in a plasma approaching marginal stability to a low-n kink mode leads to strong damping of the toroidal rotation, precisely in the high-beta regime where it is needed for stabilization.
Journal ArticleDOI
Active feedback stabilization of the resistive wall mode on the DIII-D device
M. Okabayashi,M. Okabayashi,J.M. Bialek,J.M. Bialek,M. S. Chance,M. S. Chance,Ming-Sheng Chu,E.D. Fredrickson,E.D. Fredrickson,Am Garofalo,Am Garofalo,M. Gryaznevich,R. Hatcher,R. Hatcher,Torkil H. Jensen,L. C. Johnson,L. C. Johnson,R.J. La Haye,E. A. Lazarus,E. A. Lazarus,M. A. Makowski,M. A. Makowski,J. Manickam,J. Manickam,G.A. Navratil,G.A. Navratil,J. T. Scoville,E. J. Strait,A. D. Turnbull,M.L. Walker +29 more
TL;DR: In this article, a proof of principle magnetic feedback stabilization experiment has been carried out to suppress the resistive wall mode (RWM), a branch of the ideal magnetohydrodynamic (MHD) kink mode under the influence of a stabilizing resistor wall, on the DIII-D tokamak device.
Journal ArticleDOI
Resistive wall mode stabilization with internal feedback coils in DIII-D
E. J. Strait,J.M. Bialek,I. N. Bogatu,M. S. Chance,Ming-Sheng Chu,D. H. Edgell,Am Garofalo,G.L. Jackson,R. J. Jayakumar,Torkil H. Jensen,O. Katsuro-Hopkins,J.S. Kim,R.J. La Haye,L.L. Lao,M. A. Makowski,G.A. Navratil,M. Okabayashi,H. Reimerdes,J. T. Scoville,A. D. Turnbull,Diii-D Team +20 more
TL;DR: In this paper, a set of twelve coils for stability control has been installed inside the DIII-D [J. L. Luxon, Nucl. Fusion 42, 614 (2002)] vacuum vessel, offering faster time response and a wider range of applied mode spectra than the previous external coils.
Journal ArticleDOI
Control of the resistive wall mode with internal coils in the DIII-D tokamak
M. Okabayashi,M. Okabayashi,J.M. Bialek,Anders Bondeson,M. S. Chance,Ming-Sheng Chu,Am Garofalo,R. Hatcher,Yongkyoon In,G.L. Jackson,R. J. Jayakumar,Torkil H. Jensen,O. Katsuro-Hopkins,R.J. La Haye,Yueqiang Liu,Gerald Navratil,H. Reimerdes,J. T. Scoville,E. J. Strait,M. Takechi,A. D. Turnbull,P. Gohil,J. S. Kim,M. A. Makowski,J. Manickam,Jonathan Menard +25 more
TL;DR: Strait et al. as discussed by the authors reported results from extended feedback stabilization operations, achieving plasma parameters up to the regime of Cβ ≈ 1.0 and open loop growth rates of γ openτw ≳ 25 where the RWM was predicted to be unstable with only the "rotational viscous stabilization mechanism".