467 citations · 579 across the 10 of their papers we have counts for
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Linear gyrokinetic stability of a high non-inductive spherical tokamak
B. S. Patel, D. Dickinson, C. M. Roach +1
Spherical tokamaks (STs) have been shown to possess properties desirable for a fusion power plant such as achieving high plasma ? and having increased vertical stability. To unders…
Extended electron tails in electrostatic microinstabilities and the nonadiabatic response of passing electrons
M. R. Hardman, F. I. Parra, C. Chong +6
Ion-gyroradius-scale microinstabilities typically have a frequency comparable to the ion transit frequency. Due to the small electron-to-ion mass ratio and the large electron trans…
The physics of a small-scale tearing mode in collisionless slab plasmas
C. Geng, D. Dickinson, H. R. Wilson
Microtearing modes have been widely reported as a tearing parity electron temperature gradient driven plasma instability, which leads to fine scale tearing of the magnetic flux sur…
Explosive Ballooning Flux Tubes in Tokamaks
C J Ham, S C Cowley, G Brochard +1
Tokamak stability to, potentially explosive, `ballooning' displacements of elliptical magnetic flux tubes is examined in large aspect ratio equilibrium. Above a critical pressure g…
Explosive Instability and Erupting Flux Tubes in a Magnetised Plasma Atmosphere
S. C. Cowley, B. Cowley, S. A. Henneberg +1
The eruption of multiple flux tubes in a magnetised plasma atmosphere is proposed as a mechanism for explosive release of energy in plasmas. Linearly stable isolated flux tubes are…
Structure of Micro-instabilities in Tokamak Plasmas: Stiff Transport or Plasma Eruptions?
D. Dickinson, C. M. Roach, J. M. Skipp +1
Solutions to a model 2D eigenmode equation describing micro-instabilities in tokamak plasmas are presented that demonstrate a sensitivity of the mode structure and stability to pla…
Using the local gyrokinetic code, GS2, to investigate global ITG modes in tokamaks. (I) s- model with profile and flow shear effects
P. A. Abdoul, D. Dickinson, C. M. Roach +1
This paper combines results from a local gyrokinetic code with analytical theory to reconstruct the global eigenmode structure of the linearly unstable ion-temperature-gradient (IT…
Resistive wall mode and neoclassical tearing mode coupling in rotating tokamak plasmas
Rachel McAdams, H R Wilson, I T Chapman
A model system of equations has been derived to describe a toroidally rotating tokamak plasma, unstable to Resistive Wall Modes (RWMs) and metastable to Neoclassical Tearing Modes…
Collision frequency dependence of polarization current in neoclassical tearing modes
K. Imada, H. R. Wilson
The neoclassical polarization current, generated when a magnetic island propagates through a tokamak plasma, is believed to influence the initial stage of the neoclassical tearing…
BOUT++: a framework for parallel plasma fluid simulations
B. D. Dudson, M. V. Umansky, X. Q. Xu +2
A new modular code called BOUT++ is presented, which simulates 3D fluid equations in curvilinear coordinates. Although aimed at simulating Edge Localised Modes (ELMs) in tokamak X-…