Experimental research on the Marxgenerator building time and jitter

Building time and jitter of the Marx generator are mainly depend on work state of spark gap switch during operating. Meanwhile they are related to amplitude and polarity of trigging voltage. The paper briefly describes physical process of conductance of gas spark gap switch. In order to minimize building time and jitter, experiments were performed to optimize work state related parameters of the Marx generator. As result, the total building time and jitter are (1629±8.4)ns for HeavenΙ electron beam accelerator. It fills the jitter requirement of MOPA system less than 20ns．