The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Zhai:SRF2015-TUPB017} \bibitem{Zhai:SRF2015-TUPB017} J.Y.~Zhai, Y.L.~Chi, J.P.~Dai, X.W.~Dai, J.~Gao, R.~Ge, \emph{et al.}, % J.Y. Zhai \emph{et al.}, \textquotedblleft{1.3 GHz SRF Technology R&D Progress of IHEP}\textquotedblright, % in \emph{Proc. SRF2015}, TUPB017, pp. 581--583, % in \emph{Proc. SRF2015}, Whistler, BC, Canada, 13-18, 2015, paper TUPB017, pp. 581--583, in \emph{Proc. 17th International Conference on RF Superconductivity (SRF2015)}, Whistler, BC, Canada, 13-18, 2015, paper TUPB017, pp. 581--583, ISBN: 978-3-95450-178-6, \url{http://srf2015.vrws.de/papers/tupb017.pdf}, \url{doi:10.18429/JACoW-SRF2015-TUPB017}, 2015.