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首页> 外文期刊>Plasma physics and controlled fusion >Implementation and first application of EMC3-EIRENE to EAST double-null divertor
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Implementation and first application of EMC3-EIRENE to EAST double-null divertor

机译：EMC3-EIRENE在EAST双零偏滤器上的实现和首次应用

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摘要

The 3D edge Monte Carlo code coupled with EIRENE (EMC3-EIRENE) has been implemented on the Experimental Advanced Superconducting Tokamak (EAST) and, for the first time, applied to an axisymmetric double null divertor plasma. The code results are compared with Langmuir probe measurements. The cross-field transport coefficients for particle and energy, D⊥ and χ⊥, are determined by fitting the electron density and temperature profiles measured by a reciprocating probe on the outboard midplane. Good agreement between the simulation and probe profiles is obtained when D_⊥ and χ_⊥ are set to be 0.4 m~2 s~(-1) and 2 m~2 s~(-1), respectively. However, considerable discrepancies in density and temperature profiles are observed downstream. A parameter sensitivity study is carried out to identify the possible causes. Analyzing the numerical results in comparison with the measurements leads to the conclusion that the real separatrix at the outer midplane tends to be located ～7mm inward with respect to the last closed flux surface obtained from the equilibrium fitting code.
机译：结合EIRENE的3D边缘蒙特卡罗代码（EMC3-EIRENE）已在实验高级超导托卡马克（EAST）上实现，并首次应用于轴对称双零偏滤器等离子体。将代码结果与Langmuir探针测量结果进行比较。粒子和能量的交叉场传输系数D⊥和χ⊥是通过将往复式探针测得的电子密度和温度分布拟合到外侧中间平面上来确定的。当D_⊥和χ_⊥分别设置为0.4 m〜2 s〜（-1）和2 m〜2 s〜（-1）时，模拟和探针轮廓之间具有良好的一致性。然而，在下游观察到密度和温度分布的显着差异。进行了参数敏感性研究，以确定可能的原因。分析数值结果并与测量结果进行比较，得出的结论是，相对于根据平衡拟合代码获得的最后一个封闭通量表面，外中平面处的实际分离线往往位于向内约7mm处。

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