Contamination of core plasma by high-Z impurities, especially tungsten (W), is the main reason for the very high level of radiated power in WEST experiments. Intrinsic light impurities, mainly oxygen and carbon, play a dominant role in the sputtering of W on plasma facing components. In this contribution, we present a detailed analysis of WEST experiments supported by numerical modeling performed with the transport code SOLEDGE-EIRENE providing a clear picture of light impurities transport and poloidal distribution. Moreover, making use of SOLEDGE-ERO2.0 simulations, possible strategies to reduce core contamination due to W penetration are presented.
高Z杂质，尤其是钨（W），对芯部等离子体的污染是WEST实验中辐射功率极高的主要原因。固有轻杂质，主要是氧和碳，在等离子体 facing 组件上钨的溅射过程中起主导作用。在本研究中，我们展示了基于输运代码SOLEDGE-EIRENE进行的数值模拟所支持的WEST实验详细分析，清晰揭示了轻杂质的输运和极向分布。此外，利用SOLEDGE-ERO2.0模拟，提出了减少因钨渗透导致芯部污染的可能策略。