Injector system for the polish synchrotron radiation facility ‘SOLARIS’

SOLARIS, the new synchrotron radiation (SR) facility is being built in Krakow, Poland. Solaris will be equipped with a linear injector and a storage ring operated at electron beam energy of 1.5GeV. The Solaris injector will be constructed in a modular way. It will be divided into three RF stations. Each station consists of an S-band klystron with a solid-state pulsed power modulator, followed by a SLED unit and a power divider. The modulator delivers RF power of 35 MW with a pulse length of 4.5 μs and will have a repetition rate that can be up to 100Hz. The three RF stations will feed six S-band linear accelerating structures each giving an energy gain of 100 MeV. The electron source will be a 3 GHz thermionic RF-gun and a magnetic energy filter will be used. The SOLARIS injector will initially be operated at the electron beam energy of 550 MeV with options for a full energy (1.5GeV) upgrade with supplementary RF stations and accelerating structures. The SOLARIS synchrotron radiation facility is based on a copy of the 1.5 GeV storage ring being concurrently built for the MAX-IV project in Lund, Sweden.