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<p>It has widely been recognized that the particle control and heat removal capabilities of plasma-facing components (PFCs) such as divertor will affect the overall performance of a steady-state magnetic fusion power reactor. The existing divertor technologies developed for ITER with a heating power of ~ 100&#xa0;MW may not readily allow us to expect the successful operation of DEMO reactors often with a heating power of &gt; 500&#xa0;WM if the P (heating power)/R (major radius) ratio&#xa0;scaling law by Kotschenreuther is applied, details of which will&#xa0;be described in this&#xa0;paper. Over the past several decades, a variety of innovative PFC concepts have been proposed to resolve these divertor issues. Conducted in the present work are proof-of-principle experiments on one of these innovative&#xa0;PFC concepts, employing a liquid metal as the plasma-facing material with the particular emphasis on the effects of forced liquid convection on heat and particle transport, both&#xa0;observed simultaneously.</p>

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JxB-Forced Convection Effects on the Heat and Particles Transport in Liquid Li and GaInSn Under Steady State Plasma Bombardment

  • 期刊论文

  • 发表日期：

    2025年5月30日

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  • Yoshi Hirooka

摘要

It has widely been recognized that the particle control and heat removal capabilities of plasma-facing components (PFCs) such as divertor will affect the overall performance of a steady-state magnetic fusion power reactor. The existing divertor technologies developed for ITER with a heating power of ~ 100 MW may not readily allow us to expect the successful operation of DEMO reactors often with a heating power of > 500 WM if the P (heating power)/R (major radius) ratio scaling law by Kotschenreuther is applied, details of which will be described in this paper. Over the past several decades, a variety of innovative PFC concepts have been proposed to resolve these divertor issues. Conducted in the present work are proof-of-principle experiments on one of these innovative PFC concepts, employing a liquid metal as the plasma-facing material with the particular emphasis on the effects of forced liquid convection on heat and particle transport, both observed simultaneously.