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arXiv 2407.07784physics.plasm-ph
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紧凑型聚变反应堆中用于瞬态热负荷管理的Super-X偏滤器排灰控制的首次演示

First demonstration of Super-X divertor exhaust control for transient heat load management in compact fusion reactors

B. Kool, K. Verhaegh, G. L. Derks, T. A. Wijkamp, N. Lonigro, R. Doyle, G. McArdle, C. Vincent, J. Lovell, F. Federici, S. S. Henderson, R. T. Osawa, D. Brida, … 展开作者

B. Kool, K. Verhaegh, G. L. Derks, T. A. Wijkamp, N. Lonigro, R. Doyle, G. McArdle, C. Vincent, J. Lovell, F. Federici, S. S. Henderson, R. T. Osawa, D. Brida, H. Reimerdes, M. van Berkel, The EUROfusion tokamak exploitation team, the MAST-U team

AI总结:

本研究首次在MAST-U上演示了Super-X偏滤器的排灰控制,采用新型中性气体缓冲层诊断策略,证实替代偏滤器构型可扩大运行窗口、提升瞬态热负荷控制能力并支持联合控制,为紧凑型聚变堆热负荷管理提供了可行方案。

摘要:

核聚变有望提供清洁、充足的能源。然而,如何处理从聚变堆芯等离子体排向偏滤器的巨大功率仍是一项重大挑战,这一问题在有望以更具成本效益的路径实现商业聚变能的新兴紧凑型反应堆设计中更为突出。替代偏滤器构型(ADCs)是应对该挑战的潜在方案。本研究首次在MAST-U(兆安球形托卡马克升级装置)上实现了替代偏滤器构型的排灰控制。我们采用了一种新颖的诊断策略,对保护靶板的中性气体缓冲层进行监测。研究表明,替代偏滤器构型可解决实现聚变能过程中的关键风险与不确定性:1)扩大了运行窗口;2)通过吸收可能破坏中性屏蔽层并损坏偏滤器的瞬态过程,提升了排灰控制能力;3)实现了各偏滤器与反应堆其他区域的隔离,支持联合控制。这一成果展示了替代偏滤器在反应堆有效热负荷管理与控制方面的实际应用价值。

英文摘要:

Nuclear fusion could offer clean, abundant energy. However, managing the immense power exhausted from the core fusion plasma towards the divertor remains a major challenge. This is compounded in emerging compact reactor designs which promise more cost-effective pathways towards commercial fusion energy. Alternative divertor configurations (ADCs) are a potential solution to this challenge. In this work, we demonstrate exhaust control in ADCs for the first time, on MAST-U. We employ a novel diagnostic strategy for the neutral gas buffer which shields the target. Our work shows that ADCs tackle key risks and uncertainties in realising fusion energy: 1) an enlarged operating window which 2) improves exhaust control through the absorption of transients which can remove the neutral shield and damage the divertor, 3) isolation of each divertor from other reactor regions, enabling combined control. This showcases real-world benefits of alternative divertors for effective heat load management and control in reactors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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