Mw. Kissick et al., DOMINANCE OF CONVECTIVE HEAT-TRANSPORT IN THE CORE OF TFTR (TOKAMAK FUSION TEST REACTOR) SUPERSHOT PLASMAS, Physics of fluids. B, Plasma physics, 5(10), 1993, pp. 3618-3621
Using perturbations in electron density and temperature induced by sma
ll helium gas puffs in TFTR (Tokamak Fusion Test Reactor) [Plasma Phys
. Controlled Nucl. Fusion Res. 1, 51 (1986)], the dominance of convect
ive heat transport in the core (r/a<0.4) of supershot plasmas has been
demonstrated in a new way. The TRANSP [J. Comput. Phys. 43, 61 (1981)
] transport code was used to calculate the time-dependent particle and
heat fluxes. Perturbations in the calculated convective and total ele
ctron heat fluxes were compared. They demonstrate that the conductive
component decreases moving into the supershot core, and the convective
component dominates in the supershot core. These results suggest a di
fferent transport drive in the supershot core compared to that in the
rest of the supershot plasma.