200kV Multi-gap Multi-channel Gas Spark Switch for Fast Linear Transformer Driver

Modular linear transformer driver (LTD) is a novel fast discharge high power pulse current source on primary storage energy. It can realize many LTD modules in series or parallel connection conveniently and can directly acquire the rise time of 100~200 ns of high power pulsed current. The switch is one of the pivotal components of the LTD. The multigap multichannel gas spark switch has the advantage of low inductance and stabilization. This paper introduced a multigap multichannel gas spark switch used to fast LTD module with the current rise time of 100 ns, and the current peak of 100 kA. The electric field analysis of the switch is carried out for switch design. The experimental results of static and transient property show that the switch with low inductance and finer stabilization is good enough to work for the designed fast LTD module.