The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
%\cite{musumeci:fel2019-tup036} \bibitem{musumeci:fel2019-tup036} P. Musumeci, A.C. Fisher, A. Gover, E.A. Nanni, E.J. Snively, and S.B. van der Geer, \textquotedblleft{A Waveguide-Based High Efficiency Super-Radiant FEL Operating in the THz Regime}\textquotedblright, % --- abbreviated form (published paper) - JACoW template Feb 2018 --- in \emph{Proc. FEL'19}, Hamburg, Germany, Aug. 2019, pp. 127--130. \url{doi:10.18429/JACoW-FEL2019-TUP036} % --- additional material -ISSN/ISBN-- % ISBN: 978-3-95450-210-3, ISSN: ""