用于常规及偏滤器替代构型研究的高功率TCV运行情景
High-power TCV scenario for conventional and alternative divertor studies
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中文总结 AI 辅助
本研究在TCV托卡马克上开发出一种高功率运行情景，可在接近未来反应堆条件下研究多种偏滤器磁形，其热流水平远超此前研究，相关参数符合SPARC、ITER等未来反应堆的预期范围。
中文摘要 AI 辅助
偏滤器替代构型（ADCs）必须在接近反应堆级的边界等离子体条件下接受评估，才能被视为托卡马克功率 exhaust 领域可靠的、基于物理的解决方案。迄今为止开展的大多数ADCs实验都处于相对较低的 exhaust 功率水平。本研究在TCV托卡马克上提出了一种高功率运行情景，可在扩展的刮离层（SOL）和功率 exhaust 参数空间下，研究多种偏滤器磁形。该情景的特征为：高功率的电子回旋共振加热（2.5MW，完全被体积约1立方米的等离子体吸收），高等离子体电流（边缘安全因子q₉₅≈2.5），以及低上游分界面密度（nₑ,ᵤ≈1×10¹⁹m⁻³，格林瓦尔德分数f_G≈0.1）。在偏滤器靶板处测量到的稳态平行热流最高达100MW·m⁻²，是此前TCV功率 exhaust 研究结果的一个数量级。获得的SOL碰撞率和Lengyel脱靶标度度量值处于未来反应堆（SPARC、ITER、ARC）预期的数值范围内。
英文摘要
Alternative divertor configurations (ADCs) must be evaluated under boundary plasma conditions approaching reactor-level values to be considered a reliable, physics-based solution for tokamak power exhaust. Most ADC experiments performed to date were at relatively low exhaust power. This work presents a high-power scenario on the TCV tokamak enabling the study of a wide variety of divertor magnetic shapes under an expanded SOL and power exhaust parameter space. The scenario is characterized by high power levels of electron cyclotron resonance heating ($2.5\,\text{MW}$ fully absorbed in a $\sim1\,\text{m}^{3}$ plasma) at high plasma current (edge safety factor $q_{95}\approx 2.5$), and low upstream separatrix densities ($n_{e,\text{u}}\approx1\times10^{19}\,\text{m}^{-3}$, Greenwald fraction $f_{\text{G}}\approx 0.1$). Stationary parallel heat fluxes up to $100\,\text{MW m}^{-2}$ are measured at the divertor target, an order of magnitude above previous TCV power exhaust studies. The obtained SOL collisionality and Lengyel detachment scaling metric lie within range of values expected in future reactors (SPARC, ITER, ARC).
