AI 中文总结
研究将SepOS投影外推到SPARC并引入脱离接入标准形成PE-SepOS，通过解读数据集等描述功率损失与SepOS参数关系，展示其在识别运行点的效用，应用时发现权衡，为绘制边缘等离子体运行空间提供框架。
AI 中文摘要
在这项工作中，我们将分界线运行空间（SepOS）投影外推到SPARC，并引入脱离接入标准，从而制定了组合功率耗散约束的SepOS（即PE-SepOS），以评估大规模的综合功率耗散解决方案。通过对SPARC SOLPS-ITER数据集的解释和已在实验中证明的基础工作，我们对耗散区域中的SOL净功率和动量损失进行了尽可能简单的描述，以将主要功率耗散量与SepOS参数联系起来。通过这个框架，我们展示了归一化PE-SepOS框架在识别给定可耗尽Psep要求的可及运行点方面的效用。在应用PE-SepOS框架来预测SPARC运行空间时，我们发现了内在的权衡，即：i）进入高杂质辐射场景会由于功率限制导致ne,sep显著降低（例如，在Ne浓度为2%时降低50%），ii）鉴于目前对准连续排气区域（QCE）接入标准的理解，在足够高的密度、高alpha_t条件下进入QCE需要在高辐射分数和高密度/中性压力之间进行折衷，此时偏滤器耗散区域会转变为明显的脱离状态。利用能够预测密度和杂质注入扫描的普遍趋势，PE-SepOS因此提供了一个框架，用于以可扩展的方式绘制边缘等离子体运行空间，有待在早期SPARC运行期间通过合适的偏滤器和边缘等离子体观测进行验证。
英文摘要
In this work we extrapolate the separatrix operational space (SepOS) projections to SPARC and introduce detachment access criteria, thus formulating the combined power exhaust constrained SepOS (i.e., PE-SepOS) to evaluate integrated power exhaust solutions at scale. Through the interpretation of SPARC SOLPS-ITER datasets and foundational work already demonstrated in experiments we formulate an as simple as possible description of the SOL net power and momentum losses in dissipative regimes to link the main power exhaust quantities with the SepOS parameters. Through this framework, we demonstrate the utility of a normalized PE-SepOS framework in identifying accessible operational points for given exhaustible Psep requirements. In applying the PE-SepOS framework to project the SPARC operational space, we find inherent trade-offs, namely: i) accessing high impurity radiation scenarios leads to pronounced reductions in ne,sep (e.g., 50% reductions at 2% Ne concentration) as a consequence of power limitation, and ii) given present understanding of access criteria to the quasi-continuous exhaust regime (QCE), a compromise between high radiative fraction and high density/neutral pressure is required for QCE access at sufficiently high density, high alpha_t conditions, with the divertor dissipative regime transitioning to pronounced detachment. Taking advantage of universal trends enabling projections of density and impurity seeding scans, the PE-SepOS thus provides a framework for mapping out the edge plasma operational space in a scalable manner, subject to validation during early SPARC operations with suitable divertor and edge plasma observables.
