The full-block quasi-steady-state plasma accelerator (QSPA) device and its operation as well as some possible applications of powerful plasma streams, generated by the QSPA, are described in this paper. The main attention was paid to plasma parameters measurements in the different regimes of operation. Analysis of efficiency of powerful plasma streams penetration into mirror magnetic field and plasma magnetization taking place under their propagation along the uniform magnetic field is carried out. Some results of thermal quench disruption simulations carried out with irradiation of solid targets by high energy plasma streams are presented in this paper.
