Full conversion from ohmic to runaway electron driven current via massive gas injection in the TCV tokamak

0558271 - ÚFP 2024 RIV AT eng J - Článek v odborném periodiku
Decker, J. - Papp, G. - Coda, S. - Duval, B. P. - Sheikh, U. - Blanchard, P. - Choi, D. - Galperti, C. - Calacci, L. - Carnevale, D. - Ficker, Ondřej - Gobbin, M. - Labit, B. - Tomešová, Eva - Mlynář, Jan - Plyusnin, V. - Sauter, O.
Full conversion from ohmic to runaway electron driven current via massive gas injection in the TCV tokamak.
Nuclear Fusion. Roč. 62, č. 7 (2022), č. článku 076038. ISSN 0029-5515. E-ISSN 1741-4326
GRANT EU: European Commission(XE) 633053 - EUROfusion
Institucionální podpora: RVO:61389021
Klíčová slova: disruption * elongation * massive gas injection * neon * runaway electron * runaway electron beam * tokamak
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 3.3, rok: 2022
Způsob publikování: Omezený přístup
https://iopscience.iop.org/article/10.1088/1741-4326/ac544e

Full conversion from ohmic to runaway electron (RE) driven current was observed in the tokamak à configuration variable (TCV) following massive injection of neon through a disruption mitigation valve into a low-density limited circular plasma. Following a partial disruption, a stable 200 kA RE beam is maintained for more than 1 s. Controlled ramp-down of the RE beam with adjustable decay rate was demonstrated. Control of the beam vertical position was achieved down to a RE current of 20 kA. RE beam formation is observed in elongated plasma configurations up to κ = 1.5. A reproducible scenario for RE beam generation without loss of circulating current is of particular interest for disruption modelling applications.
Trvalý link: https://hdl.handle.net/11104/0343900