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TY - CONF AU - Yu, X.D. AU - Guan, X. AU - Guo, Q.K. AU - Lei, Y. AU - Ma, P.F. AU - Wang, B.C. AU - Wang, X.W. AU - Wang, Z.M. AU - Xing, Q.Z. AU - Zhao, C. AU - Zheng, S.X. ED - Pei, Guoxi ED - Schaa, Volker RW ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Tuning of a Four-vane RFQ for Xi’an 200 MeV Proton Application Facility J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - This paper mainly describes the procedures and results of tuning a four-vane Radio Frequency Quadrupole (RFQ) accelerator for the Xi’an 200 MeV Proton Application Facility (XiPAF) project. The 3-meter-long RFQ will accelerate a 50 keV H⁻ beam from the ECR source to 3 MeV, and deliver it to the downstream drift tube linac (DTL) with a peak current of 5 mA, pulse length of 10-40 μs and maximum repetition rate of 0.5. The machining, assembly, and RF tuning of the RFQ cavity has been completed successfully. After tuning, the relative error of the operating quadrupole mode field is within ±2.7%, and the dipole mode com-ponent is within ±1.9% of the quadrupole mode. The RFQ now is ready for high-power RF conditioning. PB - JACoW Publishing CP - Geneva, Switzerland SP - 838 EP - 840 KW - rfq KW - dipole KW - quadrupole KW - cavity KW - coupling DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-THPO064 UR - http://jacow.org/linac2018/papers/thpo064.pdf ER -