Most research in magnetic fusion energy has centered on the doughnut-shaped tokamak.
Prior to the lithium fill, tokamak discharges were run for several months, using the empty stainless steel tray as a limiter.
Study activities have focused on the technical evaluation of a compact, high field, highly shaped tokamak.
Soviet scientists had recently managed to confine fusion's elusive plasma in a device called a tokamak.
Because helium particles can radiate away the energy of fusion, the plasma could cool down, degrading tokamak performance.
But only if there exists a faster route of development than that now envisaged for the tokamak.
The torus experiment's goal is to investigate the characteristics and effectiveness of the spherical tokamak configuration.
British Dictionary definitions for tokamak
(physics) a toroidal reactor used in thermonuclear experiments, in which a strong helical magnetic field keeps the plasma from contacting the external walls. The magnetic field is produced partly by current-carrying coils and partly by a large inductively driven current through the plasma
C20: from Russian to(roidál'naya) kám(era s) ak(siál'nym magnitnym pólem), toroidal chamber with magnetic field