High average-power induction linacs

Designs for LIAs (linear induction accelerators) stem primarily from physics concerns about stable beam transport and emittance preservation; these concerns lead to specific design features of the induction cores and injectors, stringent requirements on energy regulation, and specification of voltage gradient and precision magnetic alignment. Further challenges unique to HAP (high average power) operation (e.g. transient suppression, thermal management) heighten requirements on switching, reset regulation, jitter, power regulation/compensation, diagnostic sensing, and active control. The authors review how the HAP test stands and the total system integration on the ETA-II (Experimental Test Accelerator II) are developing the technologies needed to satisfy these requirements.<>