Evidence for high-velocity solid dust generation induced by runaway electron impact in FTU
Plasma Physics
2022-11-29 v2
Abstract
Post-mortem and in-situ evidence is presented in favor of the generation of high-velocity solid dust during the explosion-like interaction of runaway electrons with metallic plasma-facing components in FTU. The freshly-produced solid dust is the source of secondary de-localized wall damage through high-velocity impacts that lead to the formation of craters, which have been reproduced in dedicated light gas gun impact tests. This novel mechanism, of potential importance for ITER and DEMO, is further supported by surface analysis, multiple theoretical arguments and dust dynamics modelling.
Cite
@article{arxiv.2206.13573,
title = {Evidence for high-velocity solid dust generation induced by runaway electron impact in FTU},
author = {M. De Angeli and P. Tolias and S. Ratynskaia and D. Ripamonti and L. Vignitchouk and F. Causa and G. Daminelli and B. Esposito and E. Fortuna-Zalesna and F. Ghezzi and L. Laguardia and G. Maddaluno and G. Riva and W. Zielinski},
journal= {arXiv preprint arXiv:2206.13573},
year = {2022}
}
Comments
Letter, 6 pages, 6 figures, 1 table