Enhanced-recycling H-mode regimes with edge coherent modes achieved by RF heating with lithium-wall conditioning in the EAST superconducting tokamak
Enhanced-recycling H-mode regimes with edge coherent modes achieved by RF heating with lithium-wall conditioning in the EAST superconducting tokamak
复制标题
通过 EAST 超导托卡马克中的锂壁调节射频加热实现具有边缘相干模式的增强循环 H 模式状态
DOI：
10.1088/0029-5515/54/12/124001
复制
发表时间：
2014-12
期刊：
影响因子：
3.3
通讯作者：
Zhao, N.
中科院分区：
文献类型：
--
作者：
Hu, G. H.;Liu, Y. L.;Li, Y. L.;Zhao, N.
在 EAST 超导托卡马克中，通过较低的混合电流驱动和离子回旋共振加热以及锂壁调节，实现了两种具有边缘相干模式的增强再循环 H 模式体系，称为低增强再循环 (LER) 和高增强再循环 (HER) H 模式体系。在 LER H 模式区域中，密度和辐射在无 ELM 阶段期间增加，直到边缘局域模式 (ELM) 出现，而在 HER H 模式区域中，密度和辐射在不存在 ELM 的情况下得到很好的控制。 LER 和 HER H 模式均表现出低频（频率 <100 kHz）边缘准相干模式 (ECM)，在 L-H 转换后具有初始频率啁啾下降相位。此外，在 HER H 模式过渡后不久（<1 ms）就会出现频率 >170 kHz 的电磁高频相干模式 (HFM)。 ECM 和 HFM 均在实验室框架中以低极向波长沿电子抗磁漂移方向传播，并且可能负责在无 ELM 阶段期间增强回收。这两种增强型循环 H 模式可能对未来聚变实验中的长脉冲高性能操作产生重大影响。
Two enhanced-recycling H-mode regimes, named low-enhanced-recycling (LER) and high-enhanced-recycling (HER) H-mode regimes, with edge coherent modes, have been achieved by lower hybrid current drive and ion cyclotron resonance heating with lithium-wall conditioning in the EAST superconducting tokamak. In the LER H-mode regime, the density and radiation increase during the ELM-free phase until the onset of edge-localized modes (ELMs), while in the HER H-mode regime, the density and radiation are well controlled without the presence of ELMs. Both LER and HER H-modes exhibit a low-frequency (frequency <100 kHz) edge quasi-coherent mode (ECM) with an initial frequency chirping down phase, following the L–H transition. In addition, an electromagnetic high-frequency coherent mode (HFM) with frequency >170 kHz appears shortly (<1 ms) after the transition during HER H-modes. Both ECM and HFM propagate in the electron diamagnetic drift direction in the lab frame with a low poloidal wavelength and may be responsible for enhanced recycling during the ELM-free phase. These two enhanced-recycling H-mode regimes may have significant implications for long-pulse high-performance operations in future fusion experiments.
登录
查看更多内容
EAST 托卡马克基座等离子体湍流观测
影响因子：
1.7
作者：
Shi Nan;Ling Bili;Li Jiangang;EAST team
通讯作者：
EAST team
影响因子：
2.2
作者：
K. Kamiya;N. Asakura;J. Boedo;T. Eich;G. Federici;M. Fenstermacher;K. Finken;A. Herrmann;J. Te
通讯作者：
K. Kamiya;N. Asakura;J. Boedo;T. Eich;G. Federici;M. Fenstermacher;K. Finken;A. Herrmann;J. Te
影响因子：
3.3
作者：
J. Boom;E. Wolfrum;I. Classen;P. D. de Vries;M. Maraschek;W. Suttrop;C. P. von Thun;A. Donne;B. Tobias;C. Domier;N. Luhmann;H. Park
通讯作者：
J. Boom;E. Wolfrum;I. Classen;P. D. de Vries;M. Maraschek;W. Suttrop;C. P. von Thun;A. Donne;B. Tobias;C. Domier;N. Luhmann;H. Park
影响因子：
2.2
作者：
D. Mossessian;P. Snyder;A. Hubbard;J. Hughes;M. Greenwald;B. LaBombard;J. Snipes;S. Wolfe;H. Wilson
通讯作者：
D. Mossessian;P. Snyder;A. Hubbard;J. Hughes;M. Greenwald;B. LaBombard;J. Snipes;S. Wolfe;H. Wilson
影响因子：
2.2
作者：
J. Snipes;B. LaBombard;M. Greenwald;I. Hutchinson;J. Irby;Yi-bing Lin;A. Mazurenko;M. Porkolab
通讯作者：
J. Snipes;B. LaBombard;M. Greenwald;I. Hutchinson;J. Irby;Yi-bing Lin;A. Mazurenko;M. Porkolab