HIGH-POWER POISED ELECTRON-BEAM ACCELERATOR (LIA-30) WITH RADIAL LINES

A multimodular pulsed induction linac LIA-30 (energy, 40 MeV; electron beam current 100 kA; current pulse duration 20 ns) is described. The electric energy is stored and the accelerating voltage pulses are prod uced by inductor units comprising 288 water-cooled radial lines. The l ine switching at a nanosecond accuracy is provided by a system of 2432 trigatrons. The beam is transported in a pulsed longitudinal magnetic field (0.6 T) along a 25 m vacuum line. Characteristics of the main a ccelerator systems are presented and the results of study of the elect ron beam formation and transport are reported. The LIA-30 linac genera tes a flux of bremsstrahlung radiation with a dose of 10(2) Gy(Si) and a dose rate of 5 x 10(9) Gy/s and provides a photoneutron yield of 10 (14) per pulse from a U-238 target. Two coaxial tubular beams accelera ted in a single linac cycle have a total limiting energy of similar to 40 MeV. Joint operation of the LIA-30 linac and a fast nuclear reacto r FR-1 ensures generation of a flux of similar to 10(16) neutrons per pulse.