CONSTRUCTION OF INJECTOR CRYOMODULE FOR CERL AT KEK

The compact energy-recovery linac (cERL) is under construction at KEK. In the injector cryomodule, electron beams of 10 mA are accelerated from the beam energy of 500 keV to 5 MeV. The injector cryomodule consists of three 2-cell cavity systems, and each cavity is driven by two input couplers. The design features, component test results and assembly status of the injector cryomodule for the cERL are described in this paper.