Neoclassical tearing mode (NTM) magnetic spectrum and magnetic coupling in JET tokamak

Autor:	P. de Vries, B. Alper, J. Mailloux, N. C. Hawkes, E. Joffrin, F. Crisanti, C. Giroud, D. F. Howell, X. Litaudon, O. Tudisco, M. Baruzzo, M. Brix, Frederic Imbeaux, A. C. C. Sips, P. Buratti, C. D. Challis, Jet-Efda Contributors, Tommaso Bolzonella, E. de la Luna, H. R. Koslowski
Rok vydání:	2010
Předmět:	Physics Jet (fluid) Toroid Tokamak Plasma parameters Cyclotron Electron Plasma Condensed Matter Physics law.invention Computational physics Nuclear Energy and Engineering Physics::Plasma Physics law Electron temperature Atomic physics
Zdroj:	Plasma Physics and Controlled Fusion. 52:075001
ISSN:	1361-6587 0741-3335
Popis:	An experimental study on the poloidal mode number (m) spectrum produced by a single toroidal mode number (n) neoclassical tearing mode (NTM) in the JET tokamak is presented. Clear evidence of the existence of more than one significant m component is given. The analysis is performed comparing several methods and diagnostics; among the latter we mention high frequency magnetic pick-up coils and an electron cyclotron emission radiometer, which measures detailed electron temperature radial profiles at high time resolution. The two diagnostics are also used together in a cross coherence calculation technique. The issue of the interaction of this multiple m structure with the plasma is addressed as well, with particular attention paid to plasma toroidal rotation and rotation shear, obtained from charge exchange spectroscopy data. This effect has been studied under two different operational plasma scenarios on JET in order to investigate both dependences on plasma parameters and consequences on the scenario itself.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d2e3e7b45e4448963107f41011d8c688 https://doi.org/10.1088/0741-3335/52/7/075001 Zobrazit plný text záznamu