Preliminary pusled power design of an induction injector for radiographic applications

In order to be able to propose a dual pulse accelerator for future flash X-rays capabilities, a preliminary design of a high current induction injector has been studied. This design is based on the use of dual pulsed power generators actually available in the lab. Architecture, number of cells needed, dimensions of the conductors and breakdown probabilities in the insulating oil are evaluated with the hypothesis of using large METGLAS magnetic cores similar to those used on the RITS-6 IVA machine. The dynamical behavior of the magnetic material under a two-pulse excitation is analyzed with a non-linear magnetic field diffusion model. Choice of impedance coupling between the generators and the cells is based on the flat top requirement for the output energy of the electron beam. Additionally, results of global PSpice simulations are illustrated.