Relation between the amplitudes of the temperature and current density sawteeth
According to the magnetic diffusion equation, the ratio of the normalised current density and the temperature sawteeth should lie between 2/3 and 3/4 on the tokamak magnetic axis if, as is the case in TEXTOR, the q = 1 magnetic surface remains still during the sawtooth ramp phase, and if the sawtooth amplitude is moderately small and rises linearly with time. Experimental confirmation of this theoretical result in TEXTOR is presented. The implication is that the electrical conductivity is neoclassical over most of the ramp phase.
Bibliographic Reference: Article: Nuclear Fusion, Vol. 31 (1991) No. 3, pp. 592-595
Record Number: 199110889 / Last updated on: 1994-12-02
Original language: en
Available languages: en