Determination of Tritium-Helium-3 differential cross-section in the energy range between 0.6 MeV and 3.3 MeV for tritium depth profiling in solids - CEA Cadarache
Article Dans Une Revue Nuclear Materials and Energy Année : 2024

Determination of Tritium-Helium-3 differential cross-section in the energy range between 0.6 MeV and 3.3 MeV for tritium depth profiling in solids

Résumé

During the 2017-2019 WEST operation, a set of ITER-like plasma-facing units consisting of tungsten monoblocks was installed on the lower divertor. Despite modest heating power, 27 % of these monoblocks had cracks on their poloidal leading edges, which were not protected by a toroidal bevel. A comprehensive experimental characterization of the 133 cracked monoblocks indicates that damage occurs near the plasma strike point areas where neat cracks separated by 0.15-0.5 mm in the poloidal direction were observed. Cracks are up to 1 mm long and 1 mm deep and did not affect the lower divertor ability to sustain long pulses. The most important parameter affecting crack formation is the relative vertical misalignment between components.
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Dates et versions

cea-04777937 , version 1 (12-11-2024)

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S. Markelj, A. Cvetinović, M. Lipoglavšek, M. Kelemen, M. Čekada, et al.. Determination of Tritium-Helium-3 differential cross-section in the energy range between 0.6 MeV and 3.3 MeV for tritium depth profiling in solids. Nuclear Materials and Energy, 2024, 38, pp.101586. ⟨10.1016/j.nme.2024.101586⟩. ⟨cea-04777937⟩
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