[en] The Tara tandem mirror program has studied anchor and ponderomotive stabilization, axicell plugging with ECH and ICRF, sloshing ion buildup in the axicells, and halo formation and stabilization by an axisymmetric divertor. Central cell plasma parameters achieved by midplane fueling and slow wave ICRF heating from a local magnetic hill are β = 1.2%, n/sub e/ = 3 x 10¹² cm^-3. The plasma is stabilized both by anchor ion β and by ponderomotive stabilization with the central cell ICRF in combination with a magnetic divertor, realizing a completely axisymmetric configuration. Anchor ICRF creates non-Boltzman potential plugging of central cell ions. Neutral beam injection establishes a sloshing ion distribution for a cold dense central cell stream; the hot ion confinement is classical and dominated by electron drag. Axicell ECH plugging experiments lead to near total reduction in endloss, but also to a decrease in the central cell density, indicating increased radial losses. Single-ended ECH plugging shows no increase in opposite endloss. Single-ended plugging with axicell ICRF produces 50% reduction in ion endloss, with about half of the reflected ions observed in the opposite endloss. In the Constance-B quadrupole mirror the hot electron pressure profile is peaked off-axis and has the shape of a baseball seam