In the Wendelstein 7-X stellarator, the main locations of particle sources are expected to be the carbon divertors, baffles and graphite heat shield first wall. In this paper, the heat shield is implemented in EMC3-EIRENE to understand the expected areas and magnitudes of the recycling flux to this component. It is found that in the simulation the heat shield is not a significant source of recycling neutrals. The areas of simulated recycling flux are shown to correlate well with footprints of plasma-wetting seen in post-experimental campaign in-vessel inspection photos. EMC3-EIRENE reconstruction of line-integrated H-alpha measurements at the heat shield indicate that the majority of emission does not come from local recycling neutrals. Rather, the H-alpha signals at the heat shield are dominated by ionization of neutrals which have leaked from the divertor/baffle region into the midplane. The magnitude of the H-alpha line emission from the synthetic reconstruction is consistent with the experiment, indicating that a large overestimation of heat shield recycling would occur if these measurements were assumed to be from local recycling sources. In the future, it may be possible to obtain some information of local recycling from the heat shield since it was found that the majority of the recycling flux occurs on two well-localized areas.

在Wendelstein 7-X恒星分离器中，预计颗粒源的主要位置是碳分流器，挡板和石墨隔热屏的第一壁。在本文中，在EMC3-EIRENE中实施了隔热板，以了解到该组件的循环通量的预期面积和大小。发现在模拟中，隔热屏不是回收中性线的重要来源。在实验后的战役容器内检查照片中，模拟的再循环通量的面积与等离子体润湿的足迹显示出良好的相关性。EMC3-EIRENE在隔热屏上对线路集成H-alpha测量值的重构表明，大部分排放量并非来自本地回收中性物。相当，隔热屏处的H-alpha信号主要由中性分子电离而形成，这些中性离子已从分流器/折流板区域泄漏到中平面。合成重建产生的H-alpha线发射的幅度与实验一致，表明如果假设这些测量值来自本地回收源，则会对隔热板回收产生高估。将来，由于发现大部分的回收流量都发生在两个局部良好的区域，因此有可能从隔热屏上获得一些当地回收的信息。这表明如果假设这些测量值来自当地的回收源，则会大大高估隔热屏的回收率。将来，由于发现大部分的回收流量都发生在两个局部良好的区域，因此有可能从隔热屏上获得一些当地回收的信息。这表明如果假设这些测量值来自当地的回收源，则会大大高估隔热屏的回收率。将来，由于发现大部分的回收流量都发生在两个局部良好的区域，因此有可能从隔热屏上获得一些当地回收的信息。