Design of synchronization system of electrophysical facility «Gamma-4»

Summary form only given. To conduct radiation studies and tests, a four-module electrophysical facility <;<;Gamma-4>> is being created in RFNC-VNIIEF¹. The facility is to be used in two operation modes: in a mode of generation of bremsstrahlung radiation pulses with limiting quantum energy up to 2 MeV when using one or several high-current electron vacuum diodes and in a mode of powerful pulse generation of soft X-Ray radiation when the facility operates with plasma load. One of the most important tasks when developing the multimodule facility is provision of separate facility modules´ triggering by the time program (given by experiment conditions) to an accuracy of several nanoseconds. Basing upon solutions, tested at operation of the fIrst module of the facility - <;<;Gamma-1>> accelerator, there has been developed a design of synchronization system of <;<;Gamma-4>> facility, which should provide a triggering with precision not worse than ±3 ns of high-volt trigatron type gas-fIlled gaps of modules´ pulse forming systems (144 gaps, operating voltage 1 MV), pre-pulse switches of modules (24 gaps, operating voltage 3 MY) and eight Marx generators (40 gaps, operating voltage 100 kV). The synchronization system involves 46 pulsed generators, involving also 21 generators based upon water-insulated lines with distributed parameters and multi-channel gas-fIlled gaps². To raise amplitude of trigger pulses of formation systems´ switches and pre-pulse module switches in the synchronization system of the facility, there were used step-up transformers on the basis of pulsed high-volt cables.