HIGH POWER TESTING RF SYSTEM COMPONENTS FOR THE

There are two high power 1300 MHz RF systems under development for the Cornell University ERL Injector. The first system, based on a 16 kWCW IOT transmitter, will provide RF power to a buncher cavity. The second system employs five 120 kWCW klystrons to feed 2-cell superconducting cavities of the injector cryomodule. All components of these systems were ordered and some have already been delivered, including the IOT transmitter (manufactured by Thales Broadcast & Multimedia), 20 kWCW AFT circulator, one 170 kWCW circulator (the Ferrite Co.) and two prototype input couplers for superconducting cavities manufactured by the Beverley Microwave Division of CPI. A special liquid-nitrogen- cooled cryostat has been designed and built for testing/processing the input couplers. The results of the first high-power tests are presented.