论文标题
电弧类反应堆中的辐射脉冲L模式操作
Radiative pulsed L-mode operation in ARC-class reactors
论文作者
论文摘要
开发和评估了一种新的弧形级,高度辐射的,脉冲,L模式,燃烧的等离子体场景,作为未来Tokamak反应堆的候选者。脉冲电感操作减轻了稳态反应堆的严格当前驱动要求,而L-Mode的操作则可以无需ELM访问$ \ sim90 \%$核心辐射分数,从而大大降低了分离功率处理要求。在这种配置中,尽管L模式限制了融合功率密度可以通过利用高场来增加等离子体密度和电流来最大化。这使我们能够在紧凑型设备中以$ p_ \ mathrm {fus}> 1000 \,$ mw的稳健方案获得高收益。我们在这里证明了这种情况的可行性;首先,通过证明它们避免违反0-D tokamak限制,然后通过执行Flattop操作的自洽集成模拟,包括新古典和湍流传输,磁平衡和RF当前驱动模型。最后,我们研究了使用0-D模型引入负三角形的潜在效果。我们的结果表明,高场辐射脉冲L模式场景是典型的稳态晚期Tokamak场景的有前途的替代方案,该场景主导了Tokamak反应堆的发展。
A new ARC-class, highly-radiative, pulsed, L-mode, burning plasma scenario is developed and evaluated as a candidate for future tokamak reactors. Pulsed inductive operation alleviates the stringent current drive requirements of steady-state reactors, and operation in L-mode affords ELM-free access to $\sim90\%$ core radiation fractions, significantly reducing the divertor power handling requirements. In this configuration the fusion power density can be maximized despite L-mode confinement by utilizing high-field to increase plasma densities and current. This allows us to obtain high gain in robust scenarios in compact devices with $P_\mathrm{fus} > 1000\,$MW despite low confinement. We demonstrate the feasibility of such scenarios here; first by showing that they avoid violating 0-D tokamak limits, and then by performing self-consistent integrated simulations of flattop operation including neoclassical and turbulent transport, magnetic equilibrium, and RF current drive models. Finally we examine the potential effect of introducing negative triangularity with a 0-D model. Our results show high-field radiative pulsed L-mode scenarios are a promising alternative to the typical steady state advanced tokamak scenarios which have dominated tokamak reactor development.