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TY - UNPB AU - Park, B.-S. AU - Choi, C.O. AU - Hong, I.S. AU - Jang, H. AU - Lee, D.Y. AU - Seol, K.T. AU - Son, K.T. ED - Schaa, Volker RW TI - High RF Power Conditioning of the RISP RFQ J2 - Proc. of HB2018, Daejeon, Korea, 17-22 June 2018 C1 - Daejeon, Korea T2 - ICFA Advanced Beam Dynamics Workshop T3 - 61 LA - english AB - A CW radio frequency quadrupole (RFQ) accelerator has been designed, fabricated and installed to accelerate from proton to uranium for the Rare Isotope Science Project (RISP). The RISP RFQ is a four-vane type with a ramped inter-vane voltage profile to reduce the length and has 81.25 MHz operational frequency. The RFQ cavity consisted with nine modules, made by brazing eight segments composed with the oxygen free electric (OFE) copper, has a length of five meters and a diameter of one meter. High RF power system was composed with two 80 kW solid state power amplifier (SSPA). The high RF power can be feeding through two power coupler which can support more than 100 kW. The power from each SSPA is supplied to the cavity and the phase difference is compensated by controlling the cable length on the low power level. The designed power dissipation is 94 kW on the RFQ cavity. In this paper, the high RF power conditioning results will be reported from pulse mode to CW mode. PB - JACoW Publishing CP - Geneva, Switzerland ER -