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TY - CONF AU - De Prisco, R. AU - Czuba, K. AU - Leśniak, T.P. AU - Papis, R. AU - Sikora, D. AU - Zeng, R. AU - Żukociński, M. ED - Schaa, Volker RW TI - Influence of the Cavity Field Flatness and Effect of the Phase Reference Line Errors on the Beam Dynamics of the ESS Linac J2 - Proc. of HB2018, Daejeon, Korea, 17-22 June 2018 C1 - Daejeon, Korea T2 - ICFA Advanced Beam Dynamics Workshop T3 - 61 LA - english AB - The particle longitudinal dynamics is affected by errors on the phase and amplitude of the electro-magnetic field in each cavity that cause emittance growth, beam degradation and losses. One of the causes of the phase error is the change of the ambient temperature in the LINAC tunnel, in the stub and in the klystron gallery that induces a phase drift of the signal travelling through the cables and radio frequency components. The field flatness error of each multiple cell cavity is caused by volume perturbation, cell to cell coupling, tuner penetration, etc.. In this paper it is studied the influences of these two types of errors on the beam dynamics and it is determined their tolerances such that the beam quality is kept within acceptable limits. PB - JACoW Publishing CP - Geneva, Switzerland SP - 377 EP - 382 KW - cavity KW - linac KW - DTL KW - controls KW - LLRF DA - 2018/07 PY - 2018 SN - 978-3-95450-202-8 DO - 10.18429/JACoW-HB2018-THP2WB03 UR - http://jacow.org/hb2018/papers/thp2wb03.pdf ER -