Multi stage plasma-on-wire z-pinch configuration on the megajoule GIT-4 generator

In this paper, we will emphasize the coupling between a megajoule inductive storage generator with a multi-stage plasma on wire pinch. In this configuration, we used different puff on puff gaz injection on a on-axis metallic wire. The wire was choosen to check the plasma conditions which, in a collisionnal regime, will give an efficient X-ray laser from Ne-like Ti. Results of a first serie of shots done to understand the dynamic of the system will be given. The X-ray recorded by a 10 channels PIN diode array working between 2 and 10 keV shows a rise time less then 2 ns and an important hard x-ray (>15 keV) component from the dense plasma core was measured at maximum compression time. Enhanced stability of the scheme will be shown.