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TY - CONF AU - Yu, I.H. AU - Chun, M.-H. AU - Jeong, M.H. AU - Joo, Y.D. AU - Kang, H.-S. AU - Kim, H.-G. AU - Lee, Y.S. AU - Park, H.J. AU - Park, I.S. AU - Sohn, Y.U. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - The RF Stability of PLS-II Storage Ring RF System J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - The RF system for the Pohang Light Source (PLS) storage ring was greatly upgraded for PLS-II project of 400mA, 3.0GeV from 200mA, 2.5GeV. Three superconducting RF cavities with each 300kW maximum klystron amplifier were commissioned with electron beam in way of one by one during the last 3 years for beam current of 400mA to until March 2014. The RF system is designed to provide stable beam through precise RF phase and amplitude requirements to be less than 0.3% in amplitude and 0.3° in phase deviations. This paper describes the RF system configuration, design details and test results. PB - JACoW CP - Geneva, Switzerland SP - 3024 EP - 3026 KW - cavity KW - controls KW - LLRF KW - EPICS KW - storage-ring DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPMN043 UR - http://jacow.org/ipac2015/papers/wepmn043.pdf ER -