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TY - CONF AU - Peng, J. AU - An, Y.W. AU - Fu, S. AU - Huang, L. AU - Huang, M.Y. AU - Li, M.T. AU - Li, Y. AU - Li, Z.P. AU - Liu, Y.D. AU - Lu, X.H. AU - Luo, X.B. AU - Wang, S. AU - Xu, S.Y. AU - Yuan, Y. ED - Pei, Guoxi ED - Schaa, Volker RW ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Beam Dynamics Studies for the CSNS DTL Due to a Quadrupole Fault J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - The China Spallation Neutron Source(CSNS) accelera-tor systems is designed to deliver a 1.6GeV, 100kW pro-ton beam to a solid metal target for neutron scattering research. It consists of a 50keV H⁻ Ion Source, a 3MeV Radio Frequency Quadrupole (RFQ), an 80MeV Drift Tube Linac (DTL), and a 1.6GeV Rapid-cycling Synchro-tron (RCS). The DTL consists of four tanks. In 2017, three of four tanks have been commissioned successfully, and beam has been accelerated to 61MeV with nearly 100% transmission. However, in July 2017, one quadrupole contained in the drift tube was found fault, the beam transmission decreased to 80%. A new lattice has been designed and the 100% transmission has recovered. In January 2018, the last tank of the DTL has been commissioned and accelerated the H⁻ beam to the design energy of 80MeV for the first time. The commissioning progress and the measurement results before and after lattice adjustment will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 573 EP - 575 KW - lattice KW - DTL KW - linac KW - MMI KW - quadrupole DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-TUPO114 UR - http://jacow.org/linac2018/papers/tupo114.pdf ER -