[en] The construction of charged particle pulse accelerator ensuring obtaining beams with energy up to 10⁶ J with duration up to 10sup(-6) s is described. The accelerator consists of an insulating magnetic field coil, pulse voltage source and attached to it electrodes, one of which having plasma-forming surface. With the purpose of increasing the beam current and pulse duration the magnetic flux concentrator realized in a form of ferromagnetic core is mounted at the surface of plasmagenerating electrode outside the vacuum diode region