The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Du:IPAC2017-THPAB123} \bibitem{Du:IPAC2017-THPAB123} B. Du, G. Huang, L. Lin, W. Liu, and Z.R. Zhou, \textquotedblleft{Low Level RF Control System Architecture OF IR-FEL}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 4014--4016, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper THPAB123, pp. 4014--4016, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper THPAB123, pp. 4014--4016, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/thpab123.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-THPAB123}, 2017.