Development of beam sharing system for the L-band linac at ISIR, Osaka University

The L-band linac is operated for about 3000 hours per year for pulse radiolysis experiments and the generation of high intensity THz waves using FEL. Increasing machine time with the current system is difficult in terms of human resources. Therefore, the beam sharing system was developed for simultaneously use in multiple irradiation rooms. The pulse drive of the existing 45-degree DC deflection electromagnet using the 10 kW kicker power supply enabled distributed operation up to 5 Hz without changing the layout of the accelerator. We have manufactured a kicker electromagnet using a silicon steel sheet for further high repetition operation. At this meeting, we report on the system development and beam test results. (author)