Low Recycling Regime in ITER and the LiWall Concept for its Divertor
Authors: L.E. Zakharov, W. Blanchard, R. Kaita, H. Kugel, R. Majeski, and J. Timberlake
The low recycling regime, although never considered as an option for ITER, may suggest a solution to its important issues, such as edge-localized modes, plasma and particle control, tritium inventory, damage of plasma facing components and dust accumulation, in a way consistent with both the ITER mission (including the ignition) and its baseline design and safety. Such a regime can be approached using liquid lithium surfaces efficiently pumping hydrogen isotopes. An active area of about 40 m2, covered by ≅ 0.1 mm thick lithium, which is replenished with the rate of 10 kg/hour would be capable of absorption of plasma D and T particles and at the same time consistent with the ITER limitations regarding lithium. For low recycling conditions, a new consideration is outlined for the helium ash pumping problem.
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Published in Journal of Nuclear Materials Volumes 363-365, 15 June 2007, pp 453-457
doi:10.1016/j.jnucmat.2007.01.230
Copyright © 2007 Elsevier B.V. All rights reserved
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