UKAEA Papers

"Analysis of internal magnetic fluctuations in the hbtxia reversed field pinch"

• D Brotherton-Ratcliffe, CG Gimblett, IH Hutchinson

"Nonaxisymmetric field effects on Alcator C-Mod"

• S. M. Wolfe
• I. H. Hutchinson
• R. S. Granetz
• J. Rice
• A. Hubbard
• A. Lynn
• P. Phillips
• T. C. Hender
• D. F. Howell
• R. J. La Haye
• J. T. Scoville

A set of external coils (A-coils) capable of producing nonaxisymmetric, predominantly n =1, fields with different toroidal phase and a range of poloidal mode m spectra has been used to determine the threshold amplitude for mode locking over a range of plasma parameters in Alcator C-Mod [I. H. Hutchinson, R. Boivin, F. Bombarda, P. Bonoli, S. Fairfa…

"High-confinement-mode edge stability of Alcator C-mod plasmas"

• D. A. Mossessian
• P. Snyder
• A. Hubbard
• J. W. Hughes
• M. Greenwald
• et al.

For steady state high-confinement-mode (H-mode) operation, a relaxation mechanism is required to limit build-up of the edge gradient and impurity content. Alcator C-Mod [Hutchinson et al., Phys. Plasmas 1, 1511 (1994)] sees two such mechanisms—EDA (enhanced D-alpha H mode) and grassy ELMs (edge localized modes) , but not large type I ELMs. In EDA…

"Effect of the inductive electric field on ion flow in tokamaks"

• Peter J. Catto
• R. J. Hastie
• I. H. Hutchinson
• P. Helander