UKAEA Papers

"First Application of a Digital Mirror Langmuir Probe for Real-Time Plasma Diagnosis"

• W. McCarthy
• T. Golfinopoulos
• K.B. Woller
• C. Vincent
• A. Kuang
• B. Labombard

For the first time, a digital Mirror Langmuir probe (MLP) has successfully

"Developing Structural, High-heat Flux and Plasma Facing Materials for a near-term DEMO Fusion Power Plant: the EU Assessment"

• D. Stork
• P. Agostini
• J-L. Boutard
• D. Buckthorpe
• E. Diegele
• S.L. Dudarev
• C. English
• G. Federici
• M.R. Gilbert
• S. Gonzalez
• A. Ibarra
• Ch Linsmeier
• A. Li Puma
• G. Marbach
• P.F. Morris
• L.W. Packer
• B. Raj
• M. Rieth
• M.Q. Tran
• D.J. Ward
• S.J. Zi

"Complete Stabilization of Neoclassical Tearing Modes with Lower Hybrid Current Drive on COMPASS-D"

• C. D. Warrick
• R. J. Buttery
• G. Cunningham
• S. J. Fielding
• T. C. Hender
• B. Lloyd
• A.W. Morris
• M. R. O’Brien
• T. Pinfold
• K. Stammers
• M. Valovic
• M. Walsh,* H. R. Wilson
• Compass-D
• Rf Teams

Lower hybrid current drive (LHCD) with modest powers ( 10% of the total power input) has been used for the first time to completely stabilize performance limiting neoclassical tearing modes in many COMPASS-D tokamak discharges. The stabilizing effect in these experiments is consistent with a reduction in the free energy available in the current pro…

"Global two-fluid turbulence simulations of L-H transitions and edge localized mode dynamics in the COMPASS-D tokamak"

• A. Thyagaraja
• M. Valovic
• P. J. Knight

It is shown that the transition from L-mode to H-mode regimes in tokamaks can be reproduced using a two-fluid, fully electromagnetic, plasma model when a suitable particle sink is added at the edge. Such a model is implemented in the CUTIE code [A. Thyagaraja et al. , Eur. J. Mech. B/Fluids 23 , 475 (2004)] and is illustrated on plasma parameters t…

"Summary of contributions on Fusion Technology and ITER Activities"

• D. Stork

This summary paper reviews those contributions to the 22 nd IAEA Fusion Energy Conference (FEC) selected under the categories of Fusion Technology (FT), ITER Activities (IT) and Safety and Economic Studies (SE). The IT category was limited to those papers put forward officially by the ITER Organisation (IO). In addition, several papers in the FT ca…

"L-H Transition in the Mega-Amp Spherical Tokamak"

• R. J. Akers
• G. F. Counsell
• A. Sykes
• L. C. Appel
• E. R. Arends
• C. Byrom
• P. G. Carolan
• N. J. Conway
• G. Cunningham
• A. Dnestrovskij
• Yu.N. Dnestrovskij
• A. R. Field
• S. J. Fielding
• M. Gryaznevich
• P. Helander
• A. Kirk
• S. Korsholm
• R. Martin
• H. Meye

H -mode plasmas have been achieved on the MAST spherical tokamak at input power considerably higher than predicted by conventional threshold scalings. Following L - H transition, a clear improvement in energy confinement is obtained, exceeding recent international scalings even at densities approaching the Greenwald density limit. Transition is acc…

"Ideal magnetohydrodynamic stability of the tokamak high-confinementmode edge region"

• H. R. Wilson
• J. W. Connor
• A. R. Field
• S. J. Fielding
• R. L. Miller
• et al.

The ideal magnetohydrodynamic (MHD) stability of the tokamak edge is analyzed, with particular emphasis on radially localized instabilities; it is proposed that these are responsible for edge pressure gradient limits and edge localized modes (ELMS). Data and stability calculations from DIII-D [to appear in Proceedings of the 16th International Conf…