The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{halavanau:ipac2020-wevir06} \bibitem{halavanau:ipac2020-wevir06} A. Halavanau, S. Baturin, Y. Ding, C.E. Mayes, and P. Piot, \textquotedblleft{Hollow Electron Beams in a Photoinjector}\textquotedblright, % --- abbreviated form (published paper) - JACoW template Feb 2018 --- in \emph{Proc. IPAC'20}, Caen, France, May 2020, pp. 49--52. \url{doi:10.18429/JACoW-IPAC2020-WEVIR06} % --- additional material -ISSN/ISBN-- % ISBN: 978-3-95450-213-4, ISSN: 2673-5490