[en] The work informs about the development of an experimental model of light ion and deuteron accelerator with energy up to 500 keV at a current of approximately 1 kA. The current density of 20 A/cm² is reached in pulses with duration of less than 0.5 μs at a repetition rate of 1 Hz. The accelerator applies the magnetic electron insulation technique in the accelerating gap. In addition, an intense laser-plasma ion source is used. The diode features and operation modes are considered using the conical geometry of a spiral line forming the magnetic field. (paper)