The role of spherical torus in clarifying tokamak physics...

The spherical tokamak (ST) provides a unique environment in which to perform
complementary and exacting tests of the tokamak physics required for a burning plasma experiment
of any aspect ratio, while also having the potential for long-term fusion applications in its own
right. New experiments are coming on-line in the UK (MAST), USA (NSTX, Pegasus), Russia
(Globus-M), Brazil (ETE) and elsewhere, and the status of these devices will be reported, along
with newly-analysed data from START. Those physics issues where the ST provides an opportunity
to remove degeneracy in the databases or clarify one’s understanding will be emphasized.