Small perturbations and strong impurity exhaust capability associated with the small grassy ELMs render the grassy-ELM regime a suitable candidate for achieving steady-state H-mode operation with a radiative divertor, especially in a metal-wall device, such as the Experimental Advanced Superconducting Tokamak (EAST). As the degradation of pedestal performance with excessive divertor impurity seeding or accumulation tends to be accompanied with significantly increased radiation near the divertor X point, feedback control of the absolute extreme ultraviolet (AXUV) radiation near the X point has been employed to maintain the confinement property in EAST. However, the absolute value of the AXUV radiation at the outer target varies with plasma conditions as during the divertor detachment process. Thus, a new feedback-control scheme has been recently developed and applied to grassy-ELM H-mode plasmas in EAST to achieve stationary partial detachment while maintaining good global energy...

中文翻译：

---

使用新的反馈控制方案进行分流器杂质注入，以在EAST中的钨单块分流器下在草木ELM H模式下保持良好的铁芯约束

与小草状ELM关联的小扰动和强大的杂质排放能力使草状ELM方案成为使用辐射分流器实现稳态H模式操作的合适候选者，特别是在金属壁装置中，例如实验高级超导托卡马克（东）。由于随着过多的滤光片杂质的植入或积累而导致的基座性能下降往往伴随着滤光片X点附近辐射的显着增加，因此已采用对X点附近绝对绝对紫外线（AXUV）辐射的反馈控制来保持限制性能在东。但是，外部目标处的AXUV辐射的绝对值会随着等离子体条件而发生变化，如在偏滤器分离过程中一样。从而，