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…
PublishedP.J. Karditsas G. Lloyd M. Walters A. Peacock
Materials research represents a significant part of the European and world effort on fusion research. Detailed knowledge of materials properties is needed in the design by analysis of power plant and experimental machine components, and in testing to design fusion materials with specific properties, a process that involves collection and examinatio…
PublishedP. B. Snyder H. R. Wilson X. Q. Xu
Nonlinear three-dimensional electromagnetic simulations are employed to study the dynamics of edge localized modes (ELMs) driven by intermediate wavelength peeling-ballooning modes. It is found that the early behavior of the modes is similar to expectations from linear, ideal peeling-ballooning mode theory, with the modes growing linearly at a frac…
PublishedF.B. Rosemej R. Stamm S. Fritzsche N. Yamamoto T. Kato M. Goto H. Capes M. Koubiti V.S. Lisitsa A. Meigs N. Ohno S. Takamura D. Nishijima U.I. Safronova E. Lindroth
The analysis of equilibrium conditions might be irrelevant to determine the importance of a certain set of atomic data. We show, that in non-equilibrium and optically thick plasmas intercombination transitions between highly excited states as well as higher order dielectronic satellite transitions are of extraordinary importance for diagnostics. In…
PublishedR. Pampin P. J. Karditsas
The HERCULES code was designed and developed to assist in the safety and environmental analysis tasks of the European Power Plant Conceptual Study (PPCS). However, its capabilities extend beyond this kind of analysis: coupling of the different computational tools and nuclear databases to the same geometry and material compositions, automation of in…
PublishedK. G. McClements
A full orbit code is used to compute collisionless losses of fusion particles from three proposed burning plasma tokamaks: the International Tokamak Experimental Reactor ITER; a spherical tokamak power plant (STPP) [T. C. Hender, A. Bond, J. Edwards, P. J. Karditsas, K. G. McClements, J. Mustoe, D. V. Sherwood, G. M. Voss, and H. R. Wilson, Fusion …
PublishedA.D. Whiteford N.R. Badnell R. Barnsley I.H. Coffey M.G. O’Mullane H.P. Summers K.-D. Zastrow
This paper focuses on the diagnostic analysis in magnetically confined fusion plasmas with attention drawn both to the methodology in common with that in astrophysics and to points of departure – such as species, transport, high density and the role of neutral hydrogen. Comment is also made on the state of high quality theoretical collision data …
PublishedN.P. Taylor R. Pampin
Tungsten is a candidate material for a protective armour on the plasma-facing first wall of a fusion power plant. In order to assess the radiological implications of this use of tungsten, two power plant models from the European Power Plant Conceptual Study (PPCS) have been extended by the addition of a 2 mm tungsten layer on the ferriticmartensiti…
PublishedG. Y. Antar G. Counsell J.-W. Ahn
This article is dedicated to the characterization of turbulent transport in the scrape-off layer of the Mega Ampere Spherical Tokamak [A. Sykes and et al. , Phys. Plasmas 8 , 2101 (2001)] as a function of the average density n L . The aim is to answer a renewed interest in this subject since the bursty character of turbulence in the scrape-off laye…
Published