Limiter H-mode and other improved confinement regimes with ICRF and NBI heating in JIPP T-IIU
Limiter H-mode and other improved confinement regimes with ICRF and NBI heating in JIPP T-IIU
复制标题
限制器 H 模式和其他改进的限制机制，在 JIPP T-IIU 中采用 ICRF 和 NBI 加热
DOI：
10.1088/0029-5515/30/7/002
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发表时间：
1990
期刊：
影响因子：
3.3
通讯作者：
H. Yamada
中科院分区：
文献类型：
--
作者：
T. Watari;R. Kumazawa;K. Toi;K. Masai;Y. Hamada;A. Ando;Y. Oka;O. Kaneko;K. Kawahata;K. Adati;R. Akiyama;R. Ando;T. Aoki;J. Fujita;S. Hidekuma;S. Hirokura;K. Ida;H. Ikegami;K. Kadota;E. Kako;A. Karita;Y. Kawasumi;S. Kitagawa;M. Kojima;T. Kawamoto;T. Kuroda;A. Mohri;S. Morita;K. Narihara;Y. Ogawa;K. Ohkubo;S. Okajima;T. Ozaki;A. Sagara;M. Sakamoto;M. Sasao;K. Sato;K.N. Sato;T. Sato;T. Seki;F. Shimbo;H. Takahashi;S. Tanahashi;Y. Taniguchi;T. Tsuzuki;H. Yamada
H模式，一种改进的约束制度，最近在JIPP T-IIU高功率加热实验中获得，在限制器配置没有任何成形的等离子体截面。这种H模式是不寻常的，因为它是在离子回旋频率范围（ICRF）加热获得的。它也实现了与ICRF和中性束注入（NBI）加热相结合。单独使用ICRF获得的阈值功率水平类似于或小于组合加热情况下获得的阈值功率水平。研究了H模阈值功率与等离子体参数的关系。它随等离子体电流的增大而增大，对等离子体密度不敏感，且存在一个最佳环向场强值。ICRF加热的功率沉积配置文件进行了分析与射线跟踪代码，并用来解释所观察到的环向磁场的依赖性。本文还讨论了在同一系列实验中观察到的一类改进约束放电。这些放电具有接近H模式阈值功率的功率水平，并表现出明显的改善约束。然而，他们是不同的H-模式放电的时间演变的配置文件。
The H-mode, an improved confinement regime, was attained recently in JIPP T-IIU high power heating experiments, in a limiter configuration without any shaping of the plasma cross-section. This H-mode is unusual because it was obtained with heating in the ion cyclotron range of frequencies (ICRF). It was also attained with combined ICRF and neutral beam injection (NBI) heating. The threshold power level obtained with ICRF alone is similar to or less than that obtained in the combined heating case. The dependence of the power threshold of the H-mode on various plasma parameters has been studied. It increases with the plasma current and is insensitive to the plasma density, and there is an optimum value of the toroidal field intensity. The power deposition profile for ICRF heating has been analysed with a ray tracing code and used to explain the observed dependence on the toroidal magnetic field. The paper also discusses a class of discharges with improved confinement observed in the same series of experiments. These discharges had a power level close to the H-mode threshold power and exhibited a marked improvement of confinement. They were, however, different from H-mode discharges in the time evolution of the profiles.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox