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Power operation with reduced heat transmitting tiles at Tore Supra

Abstract : Three lagging tiles-over 12054-are present since 2006 on Tore Supra main limiter, an actively cooled high heat flux plasma facing component. The deterioration is attributed to progressing cracking of the bond between the tiles and the copper based heat sink. It is observed by an infrared camera : the thermal time constant of the tiles during cool down increased by a factor of three during the experimental campaigns of 2006 where a high level of additional power was used repetitively during long pulses. An element with a defective tile is removed for inspection during the summer shut down of 2007. The bond is cracked on three quarters of the length. Although the defects are important, the defective tiles do not limit the operation.
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Submitted on : Thursday, September 17, 2020 - 3:31:47 PM
Last modification on : Saturday, September 19, 2020 - 4:03:54 AM
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R. Mitteau, J. Schlosser, M. Lipa, A. Durocher. Power operation with reduced heat transmitting tiles at Tore Supra. Journal of Nuclear Materials, Elsevier, 2009, 386-388, pp.844 - 846. ⟨10.1016/j.jnucmat.2008.12.260⟩. ⟨cea-02942091⟩



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