Mitigation of NBI-driven Alfvén eigenmodes by electron cyclotron heating in the TJ-II stellarator
Mitigation of NBI-driven Alfvén eigenmodes by electron cyclotron heating in the TJ-II stellarator
复制标题
通过 TJ-II 仿星器中的电子回旋加速器加热减轻 NBI 驱动的阿尔文本征模
DOI:
10.1088/0029-5515/53/7/072004
复制
发表时间:
2013
期刊:
影响因子:
3.3
通讯作者:
Y. Takeiri
中科院分区:
文献类型:
--
作者:
K. Nagaoka;T. Ido;E. Ascasíbar;T. Estrada;S. Yamamoto;A. Melnikov;A. Cappa;C. Hidalgo;M. Pedrosa;B. V. Van Milligen;I. Pastor;M. Liniers;M. Ochando;A. Shimizu;L. Eliseev;S. Ohshima;K. Mukai;Y. Takeiri
Alfvén eigenmode (AE) activity driven by NBI-produced fast ions is observed in TJ-II plasmas. A two-step response of the measured AEs to electron cyclotron heating (ECH) power is seen. In a first step, the continuous character of the unstable AEs changes to a chirping character of the marginally unstable AEs when moderate values of ECH power are applied to the NBI-only-heated plasma. In a second step, a significant reduction of the AE amplitude is observed when the ECH power is doubled. This stabilizing effect has been experimentally confirmed both on a shot-by-shot basis and along a single discharge by means of ECH modulation. The observed stabilizing effect is stronger with on-axis ECH than with off-axis ECH power injection.
影响因子:
3.3
作者:
Current Drive
通讯作者:
Current Drive
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
井戸毅;長壁正樹;他
通讯作者:
他