A control method of the divertor configuration using external saddle loop coils is investigated for a quasi-symmetry stellarator device. Multiple coils are used to modify the divertor configuration while keeping the rotational transform distribution in the core region the same. The external coils successfully shrink the core plasma region and extend the divertor legs. From the transport analysis with the EMC3-EIRENE code, it is confirmed that the dependence of the electron temperature of the core plasma on the position of the plasma-facing walls is weakened by the extension of the divertor legs. The increase of the divertor particle flux and the increase of energy loss due to radiation and charge exchange processes are also confirmed.

中文翻译：

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带外线圈的准对称仿星器的偏转器腿控制及其对运输的影响

针对准对称仿星器装置，研究了一种使用外部鞍环线圈的偏滤器配置控制方法。多个线圈用于修改偏滤器配置，同时保持核心区域中的旋转变换分布相同。外部线圈成功地缩小了核心等离子体区域并延长了偏滤器腿。通过 EMC3-EIRENE 代码的传输分析，证实了核心等离子体的电子温度对面向等离子体的壁的位置的依赖性被偏滤器腿的延伸削弱了。还证实了由于辐射和电荷交换过程引起的偏滤器粒子通量的增加和能量损失的增加。