The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{Zennaro:IPAC2017-TUPAB102} \bibitem{Zennaro:IPAC2017-TUPAB102} R. Zennaro, P. Craievich, C.P. Hauri, L. Stingelin, A. Trisorio, and C. Vicario, \textquotedblleft{Compact Electron RF Travelling Wave Gun Photo Injector}\textquotedblright, % in \emph{Proc. IPAC2017}, pp. 1550--1552, % in \emph{Proc. IPAC2017}, Copenhagen, Denmark, May 2017, paper TUPAB102, pp. 1550--1552, in \emph{Proc. 8th Int. Particle Accelerator Conf. (IPAC'17)}, Copenhagen, Denmark, May 2017, paper TUPAB102, pp. 1550--1552, % ISBN: 978-3-95450-182-3, \url{http://jacow.org/ipac2017/papers/tupab102.pdf}, \url{https://doi.org/10.18429/JACoW-IPAC2017-TUPAB102}, 2017.