105 citations · 205 across the 11 of their papers we have counts for
11 papers
A One-Dimensional Tearing Mode Equation for Pedestal Stability Studies in Tokamaks
J. W. Connor, R. J. Hastie, C. Marchetto +1
Starting from expressions in Connor et al. (1988) [1], we derive a one-dimensional tearing equation similar to the approximate equation obtained by Hegna and Callen (1984) [2] and…
The Effect of Plasma Beta on High-n Ballooning Stability at Low Magnetic Shear
J W Connor, C J Ham, R J Hastie
An explanation of the observed improvement in H-mode pedestal characteristics with increasing core plasma pressure or poloidal beta, as observed in MAST and JET, is sought in terms…
The Role of Thermal Conduction in Tearing Mode Theory
J. W. Connor, C. J. Ham, R. J. Hastie +1
The role of anisotropic thermal diffusivity on tearing mode stability is analysed in general toroidal geometry. A dispersion relation linking the growth rate to the tearing mode st…
High-m Kink/Tearing Modes in Cylindrical Geometry
J. W. Connor, R. J. Hastie, I. Pusztai +2
The global ideal kink equation, for cylindrical geometry and zero beta, is simplified in the high poloidal mode number limit and used to determine the tearing stability parameter,…
Tearing mode stability calculations with pressure flattening
C J Ham, J W Connor, S C Cowley +3
Calculations of tearing mode stability in tokamaks split conveniently into an external region, where marginally stable ideal MHD is applicable, and a resonant layer around the rati…
The Stochastic Field Transport associated with the Slab ITG Modes
J W Connor, R J Hastie, A Zocco
Many models for anomalous transport consider the turbulent ExB transport arising from electrostatic micro-instabilities. In this paper we investigate whether the perturbed magnetic…
Improved Criterion for Sawtooth Trigger and Modelling
A. Zocco, J. W. Connor, C. G. Gimblett +1
We discuss the role of neoclassical resistivity and local magnetic shear in the triggering of the sawtooth in tokamaks. When collisional detrapping of electrons is considered the v…
Ion Landau Damping on Drift Tearing Modes
J. W. Connor, R. J. Hastie, A. Zocco
Kinetic treatments of drift-tearing modes that match an inner resonant layer solution to an external MHD region solution, characterised by , fail to properly match the…
Micro-tearing modes in the Mega Ampere Spherical Tokamak
D J Applegate, C M Roach, J W Connor +4
Recent gyrokinetic stability calculations have revealed that the spherical tokamak is susceptible to tearing parity instabilities with length scales of a few ion Larmor radii perpe…
Unified theory of the semi-collisional tearing mode and internal kink mode in a hot tokamak: implications for sawtooth modelling
J. W. Connor, R. J. Hastie, A. Zocco
In large hot tokamaks like JET, the width of the reconnecting layer for resistive modes is determined by semi-collisional electron dynamics and is much less than the ion Larmor rad…
Effect of current corrugations on the stability of the tearing mode
F. Militello, M. Romanelli, R. J. Hastie +1
The generation of zonal magnetic fields in laboratory fusion plasmas is predicted by theoretical and numerical models and was recently observed experimentally. It is shown that the…