Internal Transport Barrier Formation and Pellet Injection Simulation in Helical and Tokamak Reactors
Internal Transport Barrier Formation and Pellet Injection Simulation in Helical and Tokamak Reactors
复制标题
螺旋反应堆和托卡马克反应堆中的内部传输势垒形成和颗粒注入模拟
DOI：
10.1585/pfr.3.s1048
复制
发表时间：
2008
影响因子：
0.8
通讯作者：
T. Shoji
中科院分区：
文献类型：
--
作者：
Y. Higashiyama;K. Yamazaki;J. Garcia;H. Arimoto;T. Shoji
在未来的聚变反应堆中，等离子体密度峰值对提高聚变功率增益和实现约束改进模式具有重要意义。利用环形输运链接代码TOTAL，模拟了托卡马克和螺旋反应器中颗粒注入引起的密度控制和内部输运屏障（ITB）的形成。首先，进行了球团注入仿真，包括TOTAL代码中的中性气体屏蔽模型和质量重定位模型，明确了高场侧（HFS）球团注入的有效性。其次，利用基于E × B剪切效应的约束改进模型进行了含球团注入的ITB模拟，发现在反剪切托卡马克和螺旋堆中，球团深度侵彻有利于ITB的形成和等离子体堆芯的加注。
In the future fusion reactor, plasma density peaking is important for increase in the fusion power gain and for achievement of confinement improvement mode. Density control and internal transport barrier (ITB) formation due to pellet injection have been simulated in tokamak and helical reactors using the toroidal transport linkage code TOTAL. First, pellet injection simulation is carried out, including the neutral gas shielding model and the mass relocation model in the TOTAL code, and the effectiveness of high-field side (HFS) pellet injection is clarified. Second, ITB simulation with pellet injection is carried out with the confinement improvement model based on the E × B shear effects, and it is found that deep pellet penetration is helpful for ITB formation as well as plasma core fuelling in the reversed-shear tokamak and helical reactors.