Pedestal characteristics and extended high-βp ELMy H-mode regime in JT-60U
Pedestal characteristics and extended high-βp ELMy H-mode regime in JT-60U
复制标题
DOI：
10.1088/0741-3335/44/5a/328
复制
发表时间：
2002-05
影响因子：
2.2
通讯作者：
Y. Kamada;H. Takenaga;A. Isayama;T. Hatae;H. Urano;H. Kubo;T. Takizuka;Y. Miura
中科院分区：
文献类型：
--
作者：
Y. Kamada;H. Takenaga;A. Isayama;T. Hatae;H. Urano;H. Kubo;T. Takizuka;Y. Miura
JT-60 U在高三角形高βp I型ELMy H模放电中采用高场侧多弹丸注入，扩展了密度范围，具有良好的综合性能。与气体燃料放电相比，弹丸注入放电具有较高的基座压力，即使在高基座密度下，基座温度也不会降低。在高三角度下，基座βp和边缘α参数随着总βp的增加而增加。根据JT-60 U的各种实验，提出了基座和堆芯参数之间可能存在的联系。在JT-60 U装置上首次实现了低安全系数区q95<4的草状ELMy放电，具有高三角度（~0.6）。完全无感操作已被证明与草ELMs。
With the high-field-side multiple pellet injection into high-triangularity high-βp type I ELMy H-mode discharges, JT-60U has extended the density range with a favourable integrated performance. The pellet injected discharge has a high pedestal pressure compared with the gas fuelled discharges, and the pedestal temperature does not decrease even at high pedestal density. At high triangularity, the pedestal βp and the edge α-parameter increase with increasing total βp. Possible linkage among pedestal and core parameters has been proposed based on a variety of JT-60U experiments. Grassy ELMy discharges have been achieved at the low safety factor regime q95<4 for the first time in JT-60U with high triangularity (~0.6). The full non-inductive operation has been demonstrated with grassy ELMs.