Long-Pulse Operation of the GAMMA 10 Tandem Mirror

The improvement of potential confinement was attained in the GAMMA l0 tandem mirror by employing axisymmetrization of heating systems for the plasma production, heating and potential formation. Significant increase in the density and diamagnetism by potential confinement was observed. The long pulse operation during almost 0.5 sec is performed and quasi steady-state plasma is produced during discharge. The duration of the potential formation is attained during 0.15 sec by operating two ECRH systems in series. The continuous increase of the density near 5OVo is observed during ECRH pulse.