The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Ohmi:IPAC2017-THPAB021} \bibitem{Ohmi:IPAC2017-THPAB021} K. Ohmi, N. Kuroo, K. Oide, D. Zhou, and F. Zimmermann, \textquotedblleft{Wake Field and Head-Tail Instability in Beam-Beam Collision with a Large Crossing Angle}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 3738--3740, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper THPAB021, pp. 3738--3740, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper THPAB021, pp. 3738--3740, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/thpab021.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-THPAB021}, 2017.