He-ICR cleanings on full metallic walls in EAST full superconducting tokamak

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Abstract

He-ICR cleanings were successfully carried out in 2006-2007 on the full superconducting tokamak (EAST), which is an ITER-relevant experimental tokamak. Factors influence on He-ICR efficiency, such as magnetic field, ICRF power and working pressure were investigated. In EAST, the breakdown pressure for He-ICR cleanings could reach 10 Pa. The removal efficiency for H during 20 kW 4.5 × 10-3 Pa He-ICR cleaning was same as that in He-GDC cleaning (2 Pa, 4A). Highest H removal rate in EAST with full metallic material walls, 1.7 × 1022 H/h in 20 kW 3 × 10-2 Pa He-ICR, was higher by a factor of four than that in HT-7 with carbon limiter configuration. © 2008 Elsevier B.V. All rights reserved.

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Hu, J. S., Li, J. G., & Zhao, Y. P. (2008). He-ICR cleanings on full metallic walls in EAST full superconducting tokamak. Journal of Nuclear Materials, 376(2), 207–210. https://doi.org/10.1016/j.jnucmat.2008.02.090

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