The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Zhou:IPAC2017-WEPAB066} \bibitem{Zhou:IPAC2017-WEPAB066} K.S. Zhou, H.X. Deng, C. Feng, and D. Wang, \textquotedblleft{POP Experiment for the HB-HGHG Scheme at SXFEL}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 2727--2730, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper WEPAB066, pp. 2727--2730, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper WEPAB066, pp. 2727--2730, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/wepab066.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-WEPAB066}, 2017.