Speaker
Description
Recently, we completed a performance upgrade of Test Lab klystron-modulator system for PLS-II RF Linac as well as new developed S-Band 80-MW klystron test. PLS-II main linac system are under an operation of 17 RF stations including S-Band 80-MW klystron. It will be used as a test station for a performance test of RF components for PLS-II RF Linac. Klystron as RF sources is one of critical components for stable beam energy control since its RF power output affects the electron beam energy. Pulse-to-pulse stability of RF linac klystron modulators is one of important issues in 3rd generation synchrotron machine for the top-up operation of the PLS-II linac. This machine requires highly stable RF sources with a stability of 0.01% rms, to meet the beam stability requirements. By adopting a precision capacitor charging power supply (CCPS), we achieved the beam voltage with less than a 100 ppm stability for the MK system. This paper discusses an operational characteristics and measurement results of the Test Lab pulsed MK system.
Funding Agency
This work is supported by the Ministry of Science and ICT, Korea.
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