The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Song:IPAC2016-MOPOR005} \bibitem{Song:IPAC2016-MOPOR005} M. Song, H.X. Deng, C. Feng, D. Huang, B. Liu, and D. Wang, \textquotedblleft{Longitudinal Wakefields in the Undulator Section of SXFEL User Facility}\textquotedblright, % in \emph{Proc. IPAC2016}, pp. 595--597, % in \emph{Proc. IPAC2016}, Busan, Korea, Mar. 2016, paper MOPOR005, pp. 595--597, in \emph{Proc. 7th International Particle Accelerator Conference (IPAC'16)}, Busan, Korea, Mar. 2016, paper MOPOR005, pp. 595--597, % ISBN: 978-3-95450-147-2, \url{http://jacow.org/ipac2016/papers/mopor005.pdf}, \url{doi:10.18429/JACoW-IPAC2016-MOPOR005}, 2016.