Accelerating voltage increase in high-power accelerator

At the MRTI power high-current accelerator ZET accelerating voltage has been increased up to 3 MV relatively to initial value of 1.5 – 2.0 MV. The design modifications made were minimized. The high-voltage oil transmission line connecting the Marx generator with magneto insulated diode is used now as a forming line commutated by sharpening SF6-discharger. The main problem was to charge the 50-Ohm line rapidly up to 4.0 – 4.5 MV keeping the Marx generator voltage at less than 2.5 MV The rapid charge was realized due to careful choice both inductance between the Marx generator and the forming line and auxiliary resistor loading Marx generator. The relativistic electron beam (2.5 – 3.0 Me V, 20–30 kA, 90 ns pulse and 15 ns front duration) was produced in result. The physical experiments with the beam were carried out.