Magnetic Resonances in ECR-Heated Plasmas of the TJ-II Heliac

Low order rational values of the rotational transform –magnetic resonances, for brevity– can be present inside ECR–heated plasmas of the TJ‐II Heliac, in low magnetic shear conditions, without causing damage to confinement. Moreover, in agreement with previous experience in the TJ‐II, the resonances...

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Published inContributions to plasma physics (1988) Vol. 50; no. 6-7; pp. 600 - 604
Main Authors López-Bruna, D., Romero, J. A., López-Fraguas, A., Reynolds, J. M., Blanco, E., Estrada, T., Ochando, M. A., Jiménez-Gómez, R., Bondarenko, O., Tafalla, D., Herranz, J., Ascasíbar, E., Vargas, V. I., TJ-II Team
Format Journal Article
LanguageEnglish
Published Berlin WILEY-VCH Verlag 01.08.2010
WILEY‐VCH Verlag
Subjects
Heliac
Magnetic resonances
transport
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Summary:Low order rational values of the rotational transform –magnetic resonances, for brevity– can be present inside ECR–heated plasmas of the TJ‐II Heliac, in low magnetic shear conditions, without causing damage to confinement. Moreover, in agreement with previous experience in the TJ‐II, the resonances seem to benefit confinement and are associated to changes in the radial electric field, at least in the density gradient region. These results encourage considering magnetic resonances as possible external actuators on confinement in stellarator/heliotron devices (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Bibliography:ark:/67375/WNG-502FC0RF-5
ArticleID:CTPP200900005
istex:0B424D9C681177F282D74B43D7B78372622412BB
ISSN:0863-1042
1521-3986
DOI:10.1002/ctpp.200900005