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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 - Lu, X.H. AU - Luo, X.B. AU - Wang, S. AU - Xu, S.Y. AU - Yuan, Y. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Solution to Beam Transmission Decline in the CSNS Linac Operation Using Measurements and Simulations J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - The CSNS linac operation at its design average power currently. However, the beam transmission is declining and the beam loss is increasing during the operation. With simulations and experiments, we found there is a long longitudinal tail exist in the beam bunch output from the RFQ. And this tail caused the beam loss in the following linac. After inhibition of the longitudinal tail in the beam bunch, the beam transmission in operation can keep stable. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4134 EP - 4136 KW - rfq KW - DTL KW - linac KW - emittance KW - operation DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-THPAB185 UR - https://jacow.org/ipac2021/papers/thpab185.pdf ER -