The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Sun:IPAC2017-TUPAB066} \bibitem{Sun:IPAC2017-TUPAB066} S.C. Sun, W. Chen, L. Gong, L.Z. Li, X.Y. Li, H.H. Lu, \emph{et al.}, % S.C. Sun, W. Chen, L. Gong, L.Z. Li, X.Y. Li, H.H. Lu, Y.J. Sun, Y.F. Yang, L. Zhang, X.Z. Zhang, and S.T. Zhao, % S.C. Sun \emph{et al.}, \textquotedblleft{Mechanical Design of a Cryogenic Permanent Magnet Undulator at IHEP}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 1475--1477, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper TUPAB066, pp. 1475--1477, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper TUPAB066, pp. 1475--1477, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/tupab066.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-TUPAB066}, 2017.