This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1088/0741-3335/52/7/075001 in citations.
Neoclassical tearing mode (NTM) magnetic spectrum and magnetic coupling in JET tokamak
Neoclassical tearing mode (NTM) magnetic spectrum and magnetic coupling in JET tokamak
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...
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Personal Name(s): | Baruzzo, M. |
---|---|
Alper, B. / Bolzonella, T. / Brix, M. / Buratti, P. / Challis, C.D. / Crisanti, F. / de la Luna, E. / de Vries, P.C. / Giroud, C. / Hawkes, N.C. / Howell, D.C. / Imbeaux, F. / Joffrin, E. / Koslowski, H.R. / Litaudon, X. / Mailloux, J. / Sips, A.C.C. / Tudisco, O. | |
Contributing Institute: |
Plasmaphysik; IEK-4 |
Published in: | Plasma physics and controlled fusion, 52 (2010) S. 075001 |
Imprint: |
Bristol
IOP Publ.
2010
|
Physical Description: |
075001 |
DOI: |
10.1088/0741-3335/52/7/075001 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Plasma Physics and Controlled Fusion
52 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |