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Abstract

A systematic study of the MHD instabilities that limit the accessible operation parameters has been performed on the ohmic discharges of the FT tokamak. The modifications in the profiles associated with the m = 2, n = 1 precursor of the disruption are detailed for the cases of breaking through q-L = 3, low q-L operation, disruption at the high density limit and disruptions following the disappearance of the sawtooth activity. The loop voltage negative spike of the disruption itself is found to be associated to the appearance of a burst of m = 3, n = 2 mode in presence of the m = 2, n = 1 precursor activity.

Additional information

Authors: ALLADIO F, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BARBATO E, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BARDOTTI G, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BARTIROMO R, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BOMBARDA F, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BRACCO G, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BRIGUGLIO S, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BUCETI G, ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY);BURATTI P ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY), ENEA, CENTRO RICERCHE ENERGIA FRASCATI (ITALY)
Bibliographic Reference: 10TH FUSION CONFERENCE + IAEA, LONDON (UK), SEPT. 12-19 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31718 ORA
Availability: Can be ordered online
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