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首页> 外文期刊>The Open Plasma Physics Journal >Modelling of Profile Control with Lower Hybrid Wave Injection in theHL-2A Single-Null Divertor Plasma
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Modelling of Profile Control with Lower Hybrid Wave Injection in theHL-2A Single-Null Divertor Plasma

机译：HL-2A单空分流器等离子体中低杂波注入轮廓控制的建模

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Separatrix of the single-null diverted plasma produced in the HL-2A tokamak is determined by a fast algorithm for identifying plasma boundary. Higher power LH wave (1.5MW) is injected into the diverted plasma with a slightly asymmetric spectrum. Plasma heating by electron Landau interaction results in operation scenarios of preferentially dominant electron heating. Current profile control under the dominant electron heating condition is investigated with numerical simulation. Due to the off-axis driven current, an RS q-profile is formed, and an enhanced confinement regime with steep electron temperature gradient is produced. The clear decrease of the electron thermal conductivity in the vicinity of the shear reversal shows that an electron-ITB is developed. When higher LH power injects into the target plasma that is heated by neutral beam injection, the ion temperature has a large increment in addition to the high increase of electron temperature. The temperature profiles indicate that an enhanced core confinement is established with both ion- ITB and electron-ITB developed.
机译：HL-2A托卡马克中产生的单无效转向血浆的分离是通过识别血浆边界的快速算法确定的。更高功率的LH波（1.5MW）被注入具有稍微不对称频谱的转移等离子体中。通过电子Landau相互作用进行的等离子体加热导致优先进行优势电子加热的操作场景。通过数值模拟研究了主导电子加热条件下的电流分布控制。由于离轴驱动电流，形成了RS q-轮廓，并且产生了具有陡峭的电子温度梯度的增强的约束机制。剪切反转附近的电子热导率的明显降低表明电子-ITB发生了。当较高的LH功率注入通过中性束注入加热的目标等离子体中时，离子温度除了电子温度的高增长以外，还具有较大的增量。温度曲线表明，随着离子ITB和电子ITB的发展，建立了增强的核密闭性。

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