The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Zhou:SRF2017-MOPB037} \bibitem{Zhou:SRF2017-MOPB037} K. Zhou, C.L. Lao, M. Li, X.Y. Lu, X. Luo, L.J. Shan, \emph{et al.}, % K. Zhou, C.L. Lao, M. Li, X.Y. Lu, X. Luo, L.J. Shan, X. Shen, H. Wang, and X. Yang, % K. Zhou \emph{et al.}, \textquotedblleft{Progress of the 2x4-Cell Superconducting Accelerator for the CAEP THz-FEL Facility}\textquotedblright, in \emph{Proc. SRF2017}, \url{https://doi.org/10.18429/JACoW-SRF2017-MOPB037}, 2018. % in \emph{Proc. SRF2017}, \url{https://doi.org/10.18429/JACoW-SRF2017-MOPB037}, pp. 134--136. % in \emph{Proc. SRF2017}, Lanzhou, China, July 2017, paper MOPB037, \url{https://doi.org/10.18429/JACoW-SRF2017-MOPB037} % in \emph{Proc. 18th Int. Conf. on RF Superconductivity (SRF'17)}, % Lanzhou, China, July 2017, paper MOPB037, pp. 134--136, % ISBN: 978-3-95450-191-5, % \url{http://jacow.org/srf2017/papers/mopb037.pdf}, % \url{https://doi.org/10.18429/JACoW-SRF2017-MOPB037}, 2018.