authors
- ESPOSITO ., B
- GRANUCCI, G.
- SMEULDERS, P.
- NOWAK, S.
- MARTIN SOLIS, JOSE RAMON
- GABELLIERI, L.
- team, FTU
- Team, ECRH
Disruption Avoidance in the Frascati Tokamak Upgrade by Means of Magnetohydrodynamic Mode Stabilization Using Electron-Cyclotron-Resonance Heating
Articles
Overview
published in
- PHYSICAL REVIEW LETTERS Journal
publication date
- February 2008
start page
- 450061
end page
- 450064
issue
- 4
volume
- 100
Digital Object Identifier (DOI)
International Standard Serial Number (ISSN)
- 0031-9007
Electronic International Standard Serial Number (EISSN)
- 1079-7114
abstract
- Disruption avoidance by stabilization of MHD modes through injection of ECRH at different radial locations is reported. Disruptions have been induced in the FTU (Frascati Tokamak Upgrade) deuterium plasmas by Mo injection or by exceeding the density limit (D gas puffing). ECRH is triggered when the V(loop) exceeds a preset threshold value. Coupling between MHD modes (m/n=3/2, 2/1, 3/1) occurs before disruption. Direct heating of one coupled mode is sufficient to avoid disruptions, while heating close to the mode leads to disruption delay. These results could be relevant for the International Thermonuclear Experimental Reactor tokamak operation.