Abstract In this work, the predicted application of the quasi-snowflake (QSF) magnetic equilibrium on the EAST new designed lower divertor shape is presented and compared with the conventional magnetic configuration by using SOLPS-ITER simulation. The performance of heat flux control, power dissipation of the QSF divertor (QSFD) are studied on the potential EAST new upgrade lower tungsten (W) divertor. The results indicate that QSFD could significantly increase the connection length and flux expansion, thus reduce the heat flux loads to the target significantly. By considering the neon (Ne) impurity seeding, the simulation result shows that the QSFD has higher power dissipation than that of standard divertor (SD), which is caused by the different Ne particle distribution in SD and QSFD.

中文翻译：

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准雪花磁构型在EAST新型下钨偏滤器上的应用模拟

摘要 在这项工作中，通过使用 SOLPS-ITER 模拟，提出了准雪花 (QSF) 磁平衡在 EAST 新设计的下偏滤器形状上的预测应用，并与传统的磁配置进行了比较。在潜在的 EAST 新升级低钨 (W) 偏滤器上研究了热流控制性能、QSF 偏滤器 (QSFD) 的功率耗散。结果表明，QSFD可以显着增加连接长度和通量膨胀，从而显着降低对目标的热通量载荷。通过考虑氖 (Ne) 杂质播种，仿真结果表明 QSFD 比标准偏滤器 (SD) 具有更高的功耗，这是由于 SD 和 QSFD 中 Ne 粒子分布不同造成的。