In a world increasingly facing new challenges at the forefront of plasma scientific research and technological innovation, CNR and ISTP pledge progress and achieve an impact in the integration of research into societal practices and policy

Cross machine investigation of magnetic tokamak dust: Morphological and elemental analysis

De Angeli M.; Ripamonti D.; Ghezzi F.; Tolias P.; Conti C.; Arnas C.; Jerab M.; Rudakov D.L.; Chrobak C.P.; Irby J.; LaBombard B.; Lipschultz B.; Maddaluno G.

The presence of magnetic dust can be an important issue for future fusion reactors where plasma breakdown is critical. Magnetic dust has been collected from contemporary fusion devices (FTU, Alcator C-Mod, COMPASS and DIII-D) that feature different plasma facing components. The results of morphological and elemental analysis are presented. Magnetic dust is based on steel or nickel alloys and its magnetism is generated by intense plasma-material interactions. In spite of the strong similarities in terms of morphology and composition, X-ray diffraction analysis revealed differences in the structural evolution that leads to non-trivial magnetic responses.

ID 452478
DOI 10.1016/j.fusengdes.2021.112315
PRODUCT TYPE Journal Article
LAST UPDATE 2022-04-15