2015年8月
Influence of external resonant magnetic perturbation field on edge plasma of small tokamak HYBTOK-II
Journal of Nuclear Materials
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- 巻
- 463
- 号
- 開始ページ
- 463
- 終了ページ
- 466
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jnucmat.2014.12.018
© 2014 Elsevier B.V. Abstract Radial profile of externally applied resonant magnetic perturbation (RMP) field with mode numbers of m = 6 and n = 2 in a small tokamak device HYBTOK-II have been investigated using a magnetic probe array, which is able to measure the radial profile of magnetic field perturbation induced by applying RMP. Results of RMP penetration into the plasma show that the RMP decreased toward the plasma center, while they were amplified around the resonant surface with a safety factor q = 3 due to the formation of magnetic islands. This suggests that RMP fields for controlling edge plasmas may trigger some kind of MHD instabilities. In addition, simulation results, based on a linearized four-field model, which agrees with the experimental ones, indicates that the penetration and amplification process of RMP strongly depend on a Doppler-shifted frequency between the RMP and plasma rotation.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jnucmat.2014.12.018
- ISSN : 0022-3115
- SCOPUS ID : 84937728566