Speaker
Description
The National Synchrotron Radiation Research Center (NSRRC) in Taiwan has established the fifth Solid-State RF Transmitter system. This unit is designed to supplement the RF power provided by the currently operational klystron transmitter, fulfilling the increased RF power demand necessary for the growing number of insertion devices at the Taiwan Photon Source (TPS). The transmitter's architecture is based on a two-stage power aggregation system. Specifically, 11 modules are first combined to form each of the ten sub-systems, and the outputs of these ten sub-systems are then fed into a final traveling-wave combiner to generate the full output power. During commissioning, a significant problem was observed, where the reflected power measured at the output of some of these ten sub-systems exceeded 500 W at the total 60 kW output level. This work details the optimization and troubleshooting process, address the high reflection issue and enhanced stability and improved power efficiency in the system.
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