ABSTRACT

Methods that refer to calculations and measurements of accelerating cavities in RELUS standing-wave electron linacs with biperiodic structures (BPSs) and the Uragan-2 proton linac with accelerating inter-digital cavities excited in the TEm mode. This chapter describes these accelerators and the design and tuneup of their cavities. Linac performance characteristics are largely determined by the type of rf generators and feeding circuits of accelerating sections. A magnetron-type generator suits best for multipurpose accelerators because of its high efficiency, low cost, rather long life, availability, and a relatively low supply voltage. The configuration of the RELUS-1 setup is typical for a multipurpose accelerator and offers a wide tuning of beam parameters by changing both the feeding power of the accelerating sections and the phase of bunched beam entrance into the accelerating sections. Creating RELUS-type accelerators in practice was preceded by theoretical studies in the dynamics of electrons in the field of a BPS standing wave.