Pre-plasma remobilization of ferromagnetic dust in FTU and possible interference with tokamak operations

De Angeli, M. ✉; Lazzaro, E.; Tolias, P.; Ratynskaia, S.; Vignitchouk, L.; Castaldo, C.; Apicella, M. L.; Gervasini, G.; Giacomi, G.; Giovannozzi, E.; Granucci, G.; Iafrati, M.; Iraji, D.; Maddaluno, G.; Riva, G.; Uccello, A.

Angol nyelvű Tudományos Szakcikk (Folyóiratcikk)
Megjelent: NUCLEAR FUSION 0029-5515 1741-4326 59 (10) Paper: 106033 , 17 p. 2019
  • SJR Scopus - Condensed Matter Physics: D1
    Experimental evidence of the pre-plasma remobilization of ferromagnetic dust in FTU is presented. Thomson scattering data and IR camera observations document the occurrence of intrinsic dust remobilization prior to discharge start-up and allow for a rough calculation of the average mobilized dust density. Exposures of calibrated extrinsic non-magnetic and ferromagnetic dust to sole magnetic field discharges reveal that the magnetic moment force is the main mobilizing force, as confirmed by theoretical estimates. Pre-plasma remobilization probabilities are computed for varying dust sizes. The impact of prematurely remobilized dust on the breakdown and burn-through start-up phases is investigated together with the discharge termination induced once the plasma plateau is established.
    Hivatkozás stílusok: IEEEACMAPAChicagoHarvardCSLMásolásNyomtatás
    2021-05-10 20:17