In situ observation system for the simultaneous irradiation of the X-ray and the visible lasers

Abstract. For the purpose of nonlinear experiment by use of plasma based X-ray laser, we constructed a simultaneous irradiation system with a single shot X-ray laser and a single shot visible laser. Performance of the system has been investigated by in situ observation of the evolution of the damages which has been produced on the SnCVSiCh multi-layers.